WO2018199405A1 - Filterized fabric for protecting against toxic substance, manufacturing method therefor, and special clothes made thereof - Google Patents

Abstract

The present invention relates to a fabric for protecting against a toxic substance. The present invention comprises: a first layer, a second layer, and a third layer, each of which is made of an air-permeable material; and a second sorption layer and an activated carbon bead, each of which includes an activated carbon component and is provided between the first layer, the second layer, and the third layer. The present invention can filter a toxic substance in multiple steps through an activated carbon bead and sorption layers.

Description

Filtered fabric for protection of toxic substances, manufacturing method therefor and special clothing

The present invention relates to a filter rised fabric for protecting toxic substances, a manufacturing method therefor and a special suit therefor, and more specifically, a filter rised fabric for protecting toxic substances that can be sorbed through activating carbon and reused after washing. It relates to a manufacturing method and special clothing thereby.

In general, as the development and possession of weapons of mass destruction (WMD) increases in modern warfare, products that can protect the human body or equipment are required. Among weapons of mass destruction, chemical weapons are inexpensive to produce and can be produced in a short time due to miniaturized manufacturing facilities.

Accordingly, a variety of protective equipment that can protect the human body, such as CBRN (chemical, bacteriological, radiological, or nuclear / NBC or nuclear) or protective clothing and gas masks used in the nuclear weapons are required. The NBC protective clothing can be classified into air breathable protective clothing and breathable protective clothing.

Non-breathable protective clothing is a protective clothing that blocks external fluids from entering and exiting, but it has excellent protection against toxic substances, but has a fatal disadvantage that it is difficult to release vapor and heat released from the body to the outside.

On the other hand, breathable protective clothing, unlike non-breathable protective clothing, has a certain amount of fluid ingress, and since it is considered that toxic substances have a direct effect on the human body, a fabric containing activated carbon that can adsorb and filter toxic substances and camouflage thereon It adopts the double structure that applied the cloth with the performance.

The prior art of such a breathable protective suit of "Korean protective clothing fabric improved flexibility" of Korean Patent No. 10-1041415, "Adsorption filtration material" of Korean Patent No. 10-1146573, Korean Patent No. 10-1406311 "Cabric protective clothing fabrics and thereby CBR protective clothing" and Korean Patent No. 10-1139300, "Adsorption filter material for producing CBR protective clothing having improved wear physiological function".

According to this prior art, in order to protect the human body from the toxic substances in the fluid state consisting of gas and / or liquid, a fabric of a latex rubber or the like is applied to a polyester-based fiber material or the like to protect the endothelial and It is composed of an outer shell which serves to primarily block the toxic substances in the solid state, and an inner shell which can absorb and remove the toxic substances as the surface is treated with activated carbon using an adhesive.

In particular, the above-described prior art is provided by adsorbing the sorbent formed in the form of porous beads with fine pores between the endothelium and the outer shell, thereby absorbing and filtering out toxic substances.

However, the prior art as described above (prior art 1) has a problem in that a gap is formed between the beads because the sorbent has the form of beads, and some of the toxic substances are penetrated without being filtered through the gap.

In addition, as the sorbent is provided between the shell and the endothelium in the form of beads as described above, only the upper and lower portions of the sorbent are attached to the shell and the endothelium, resulting in the phenomenon that the sorbent sorbed from the shell and the endothelium during washing. Therefore, if the washing is performed several times, the adsorption performance of the toxic substance may be remarkably reduced.

In addition, as the sorbent is spherically formed, the specific surface area may be substantially reduced because the sorbent may not be substantially completely faced with the air flowing into the skin.

Therefore, in order to solve the above-mentioned problem, a product in which powder activated carbon is applied, rather than a sorbent in the form of beads, has been released in Korea (Korea). Such a product (prior art 2) is simply sprayed with activated carbon powder on a nonwoven fabric and then pressurized, so that a large amount of activated carbon is released from the fabric during activity after wearing, and in addition, the activated carbon is partially lost during washing. There is a problem that can not be reused.

Since these products are activated carbon in the form of powder, when the adhesive is attached to the fabric, the activated carbon is not embedded in the adhesive and thus the activated carbon cannot be adsorbed. Especially, the adhesive shields the fabric so that the fabric's air permeability is lost. Countless activated carbons are simply sprayed onto the fabric.

The present invention was created in order to solve the above problems, it is possible to protect the falling off of activated carbon during washing, and to filter the toxic substances by sorption in multiple stages through the activated carbon, the activated carbon blocks the passage to the sphere and plane Therefore, the object of the present invention is to provide a filterized fabric for protecting toxic substances, a manufacturing method therefor, and a special suit thereof, which can significantly expand the specific surface area for sorption of toxic substances.

Fabric of the present invention for achieving the above object, the first layer made of a fabric of breathable material; A second layer disposed spaced below the first layer and made of a fabric of a breathable material; A plurality of activated carbon beads fixed between the first layer and the second layer, the plurality of activated carbon beads sorbing toxic substances in air passing through the first layer; An adhesive provided on at least one of a lower surface of the first layer and an upper surface of the second layer to which the activated carbon beads are fixed to attach and fix the activated carbon beads; And a second sorption layer for soaking toxic substances in air passing through the second layer through the activated carbon beads fixed with the adhesive.

The second sorption layer may include a third layer made of a breathable material integrally provided on the lower surface of the second layer or overlapping a lower portion of the second layer so as to soak the toxic material transmitted through the second layer. It is provided on the upper surface of the powdered activated carbon and the matrix of the solvent and the viscous thermosetting to thermoplastic material and a plurality of fine particles adhering to the powdered activated carbon is extracted from the matrix that is cured as the bubble-like cavity in the matrix It is provided in the form of a film in the second layer or the third layer by a sorbent coating agent composed of a soluble particulate filler that provides a pore consisting of a discontinuous molding on the second layer or the third layer (eg : It is a form of spaced spots or linear shapes) that traps air through which spaces are communicated through spaced spaces while sorbing toxic substances. It is characterized by the ball.

The second sorption layer is formed by coating the sorbent coating agent with a gel or colloid mixed with 24 to 75 parts by weight of matrix, 106 to 205 parts by weight of solvent, and 0.2 to 57 parts by weight of particulate filter based on 100 parts by weight of the activated carbon. As it is cured, it is possible to secure the pores even when molded in the form of a film, characterized in that the sorption of toxic substances is possible.

The second sorption layer is provided in the form of a film on the surface (upper surface) of the third layer facing the second layer, the adhesive is provided on the upper surface and the upper surface is attached to the lower surface of the second layer It is characterized by.

The second sorption layer is integrally provided on a lower surface of the second layer facing the third layer, and is attached to and fixed to the third layer by the adhesive.

The present invention is integrally provided with the first layer in the form of a film as the sorbent coating agent is applied in the form of a thick film while being spaced apart from the lower surface of the first layer, and the first layer It may further include a; the first sorption layer for soaking the toxic substances in the permeated air.

The first sorption layer may be composed of spots configured to have different spots and sizes from the second sorption layer.

The first sorption layer and the second sorption layer need to be molded in a form that is shifted from each other.

The first sorption layer may be fixed to the upper end of the activated carbon bead through the adhesive as the adhesive is applied to the surface.

The third layer may further include a third sorption layer formed on the lower surface opposite to the second sorption layer, wherein the third sorption layer is formed in a film form as it is applied in the form of a thick film while being spaced apart to form a spaced apart film. There is a need.

The third sorption layer is preferably formed on the lower surface of the third layer in spots having the same or different diameter as the second sorption layer.

The third sorption layer needs to be molded on the lower surface of the third layer in a form that is alternated with the second sorption layer.

The present invention, the fourth layer of the breathable material provided under the third layer; And a fourth sorbent layer formed of the sorbent coating agent to form a film as it is applied in the form of a thick film while being spaced apart from the upper surface of the fourth layer to form a film.

The present invention may further include a shield provided at a lower portion of the third layer or the fourth layer and shielding a lower portion thereof and made of a fabric of a breathable material.

The shield may be attached and fixed to the third layer or the fourth layer by the adhesive.

Filtered fabric for toxic material protection as described above may be manufactured as a special clothing for toxic material protection.

In addition, the filterized fabric for protecting the toxic substance is shielded at the upper portion of the outer skin made of a breathable material, and is used as an intermediate skin filtering the toxic material between the outer skin and the inner skin by shielding the inner skin. Can be.

On the other hand, the manufacturing method of the present invention, a layer preparation step of preparing a first layer, a second layer and a third layer made of a fabric of breathable material; It is composed of powdered activated carbon, a solvent, a viscous thermosetting to thermoplastic matrix, and a plurality of fine particles adhering to the activated carbon, and extracted from the matrix to be cured. A coating film manufacturing step of preparing a water-soluble coating film composed of a particulate filler; The sorbent coating agent is applied to the lower surface of the first layer or the second layer or the upper surface of the third layer in the form of a thick film having a discontinuous form (for example, a spot or a linear form at a spaced state). Coating agent coating step; A sorption layer molding step of curing the coated coating agent to form a first sorption layer or a second sorption layer for soaking a toxic substance in the first layer, the second layer, or the third layer; Pores which form pores made of bubble-shaped cavities in the first or second sorption layer by extracting the particulate filler consisting of a plurality of fine particles from the first or second sorption layer. Forming step; A primary adhesive coating step formed on the second layer or the third layer and applying an adhesive to the second sorption layer in which the pores are formed; Applying a second adhesive to a surface of the second layer; A lower bead fixing step of fixing a lower end of an activated carbon bead in the form of granules or spheres on the surface (upper surface) of the second layer to which the secondary adhesive is applied; A lamination step of bonding and laminating the second layer and the third layer through the primary adhesive applied to the second sorption layer; And an upper shielding step of shielding an upper portion of the second layer by stacking the first layer on an upper portion of the second layer on which the third layer is laminated on the lower side and a lower end of the activated carbon beads is fixed at an upper surface thereof. do.

In the laminating step, the third layer is pressed into the laminated state with the second layer to attach the third layer and the second layer through the adhesive applied to the second sorption layer.

The coating agent manufacturing step may include a mixture preparation step of preparing a mixture by adding a solvent, activated carbon, and particulate filler to the matrix; And a stirring step of stirring and dispersing the mixture.

In the mixture production step, the mixture is prepared in the form of gel or colloid by mixing 24 to 75 parts by weight of matrix, 106 to 205 parts by weight of solvent, and 0.2 to 57 parts by weight of particulate filter based on 100 parts by weight of the activated carbon.

The present invention is provided between the laminating step and the upper shielding step, the third adhesive coating step of applying the adhesive to the lower surface of the first layer facing the second layer; And fixing the upper end of the bead by bonding the upper end of the activated carbon beads to the lower surface of the first layer through the tertiary adhesive.

The coating agent coating step may include: applying a first coating agent to the lower surface of the first layer in the form of a thick film having a discontinuous form; And applying the sorbent coating agent to the lower surface of the second layer or the upper surface of the third layer in the form of a thick film having a discontinuous form, wherein the size of the spot or linear applied in the first coating agent coating step It includes; secondary coating film coating step of applying in a smaller size.

The present invention, an additional adhesive applying step of applying the adhesive to the first sorption layer molded in the form of a film on the lower surface of the first layer through the sorption layer forming step; And fixing the upper end of the activated carbon beads having the lower end fixed to the second layer to the adhesive of the first sorption layer.

The bead top fixing step may include: a layer overlapping step of laminating the first layer having the first sorption layer to which the adhesive is applied to the second layer to which the activated carbon beads are attached; A pressing step of pressing at least one of the combined first layer and the second layer; And an adhesive curing step of curing the adhesive applied to the first sorption layer to fix an upper end of the slide coal beads to the surface of the first sorption layer.

The bead bottom fixing step, the bead spreading step of spraying the activated carbon beads on the upper surface of the second layer to which the adhesive is applied; Compressing the activated carbon beads by pressing an upper surface of the second layer sprayed with the activated carbon beads; An adhesive curing step of curing the adhesive applied to the second layer to fix a lower end of the activated carbon bead to the second layer; And removing unattached beads to vibrate the second layer or to provide a vacuum pressure to an upper surface of the second layer to remove the activated carbon beads not attached to the adhesive from the second layer.

The manufacturing method as described above can be used for the production of special clothing for the protection of toxic substances.

On the other hand, the above-mentioned spots of the first to fourth sorption layer, may be configured in the shape of a circular, oval or polygonal on the face. The third and fourth sorption layers are formed in the third layer and the fourth layer in the same manner as the first and second sorption layers described above. In addition, the third layer or the fourth layer may be laminated to another layer to form a single body in the same manner as described above.

The first to fourth sorption layers are spaced in the form of the above-mentioned spots to linear on the surface of the first layer to the fourth layer is applied in the form of a thick film, and then the air is communicated through the spaced apart as the cured To serve.

As described above, the filterized fabric for protecting toxic substances of the present invention has an extended specific surface area than spherical activated carbon beads because the first to fourth sorption layers containing powdered activated carbon are molded to the first to fourth layers in a planar manner. It can be provided, and separately provided with activated carbon beads can not only supplement the sorption performance of the first to fourth sorption layer, but also can be purified by filtering the toxic substances in multiple stages, the first layer to the fifth As the layer is made of breathable material to vent the air, it can improve the fit when manufactured as a special clothing for protecting toxic substances.

In particular, since the first to fourth sorption layers are formed in the form of a film on the surface of the first to fourth layers due to the material properties of the sorbent coating agent and the component ratio and physical properties of the components mixed in the sorbent coating agent, the durability is provided. In addition, it is possible to suppress the loss of activated carbon at the time of washing as well as to improve the fit by the elasticity of the matrix, and a soluble particulate filler composed of a plurality of fine particles is extracted from the matrix to form bubbles in the matrix. By providing micro pores made of cavities, it is possible to guide the toxic substances to the activated carbon through the pores communicating with the activated carbon, and as a result, the specific surface area of the activated carbon can be secured as stably as possible by preventing the surface of the activated carbon from being shielded by the matrix as much as possible. Can be.

And, since the matrix is composed of a material having elasticity, hydrophilicity, chemical resistance, heat resistance and moisture resistance, it is possible to improve the fit as described above by providing elastic force, to ensure availability by hydrophilicity, chemical resistance and heat resistance And moisture resistance to improve chemical resistance and heat resistance, as well as water resistance, and fine pores in the matrix and the sorption layer in the form of a film by a solvent evaporated or dried or dissipated. Pore) can be supplied to the activated carbon embedded in the matrix, that is, toxic substances with the above-mentioned pore to the activated carbon contained in the sorption layer can greatly improve the sorption performance.

In addition, since activated carbon is composed of 0.1 μm to 300 μm, the effective area is excellent, so that the sorption performance of activated carbon can be improved, and additives are added to improve the printability of the coating agent as well as dispersibility and stability. Physical properties can also be improved.

In addition, when the first to fourth sorption layers are formed spaced apart from the first to fourth layers, the rigidity of the first to fourth layers is partially weakened, thereby further securing the flexibility of the filterized fabric made of a fabric. Can be.

In addition, as the first sorption layer is formed in the form of spots or lines in the form of a film spaced apart or linear, the activated carbon beads can be easily dispersed since the first sorbent layer can be substantially dispersed and provided to the activated carbon beads. Not only can the sorbent material be sorbed, but the first and second sorption layers are separated by spots or linear patterns and are molded in the form of a film in the first to fourth layers so that air can be smoothly spaced through the gaps. You can also communicate.

In addition, since the spots of the first to fourth sorption layers are formed in the shape of a circle, an ellipse, or a polygon (for example, triangular to octagonal), a planar pattern can be easily implemented, and the first sorption layer is smaller than the second sorption layer. It is formed to have a fine diameter can easily disperse the air passing through the first layer to provide to the activated carbon beads, since the first and second sorption layer is molded in a displaced form, so that the second sorption layer of the first sorption layer Toxic substances can be easily sorbed from the incoming air through the spaced gaps.

In addition, when the third or fourth sorption layer is provided, additional filtering is possible, so that the filtration performance can be further improved, and a second sorption layer is provided on the lower surface of the second layer, or an upper surface of the third layer. And when provided with the third and fourth sorption layer on the lower surface can use both sides of the breathable fabric as a filter.

In addition, when the shield is composed of a knit or tricot having elasticity can be improved wearing comfort.

On the other hand, the manufacturing method according to the present invention by applying an adhesive to the first sorption layer or the second sorption layer or the second layer to attach the sorption layer or activated carbon beads through the adhesive, or firmly fixed the activated carbon beads between the members, The second sorption layer can be firmly fixed to the second layer or the third layer.

Then, the activated carbon beads are sprayed after the activated carbon beads are sprayed in a state in which the adhesive of the second layer is melted, so that the activated carbon beads can be firmly attached, and the second layer is vibrated or sucked through the vacuum pressure after the activated carbon beads are pressed. By removing the unattached activated carbon beads from the activated carbon beads sprayed on the second layer it is possible to recover the unattached activated carbon beads again.

In contrast, the activated carbon beads are easily fixed to the second layer because the activated carbon beads are fixed to the second layer by inverting the second layer and compressing the activated carbon beads, and the activated carbon beads are melted by melting the adhesive applied to the first sorbent. By attaching the upper end of the activated carbon beads to the first sorbent can be firmly fixed, the adhesive applied to the second sorption layer is melted, the second sorption layer on the lower surface of the second layer or the upper surface of the third layer By attaching, not only can the second sorption layer be firmly fixed to the second layer or the third layer, but also the first to third layers are virtually multipled by this process, so that the filterized fabric for protecting toxic substances is 1 It can be manufactured like jean fabric.

On the other hand, if the above-mentioned first sorption layer is omitted, the activated carbon beads adsorb the toxic substances in a state of being fixed to the first layer and the second layer through the adhesive, and the second sorption of some toxic substances passing through the second layer. Since at least any one of the layers to the fourth sorption layer is adsorbed, the activated carbon beads may not only adsorb toxic substances which are not adsorbed, but when only one of the second to fourth sorption layers is formed, the activated carbon beads may be removed during washing. The adsorption performance of the part can be compensated by the second to fourth sorption layers, and at the same time, the overall weight of the fabric can be reduced.

On the other hand, the particulate filler can be easily removed by extracting and removing the particulate filler by contacting the filter layer with a reactant that chemically reacts with the particulate filler.

On the other hand, the special clothing according to the present invention uses a filterized fabric for protection of toxic substances prepared as described above, not only improves the filtration performance but also wash durability compared to the prior art.

1 is a longitudinal cross-sectional view of a fabric according to the prior art;

2 to 5 are longitudinal cross-sectional views of the fabric according to the first to fourth embodiments of the present invention;

6 is a real picture of the fabric shown in FIG.

FIG. 7 is a conceptual diagram conceptually illustrating the sorption layer shown in FIG. 2; FIG.

8 is a longitudinal sectional view of the special clothing according to the embodiment of the present invention;

9 to 11 is a graph showing the experimental results of the fabric according to an embodiment of the present invention;

12 is a longitudinal sectional view of the far-end according to the fifth embodiment of the present invention;

13 is a longitudinal sectional view of a far-end according to a sixth embodiment of the present invention;

14 is a longitudinal sectional view of the far-end according to the seventh embodiment of the present invention;

15 is a longitudinal cross-sectional view conceptually showing the internal configuration of the fabric shown in FIG.

16 is an enlarged cross-sectional view of the activated carbon shown in FIG. 15;

17 is a longitudinal sectional view showing pores of the fabric shown in FIG. And

18 is a table showing the results of experiments in accordance with an embodiment of the present invention.

Hereinafter, with reference to the accompanying Figures 2 to 18 will be described a filterized fabric for protection of toxic substances according to an embodiment of the present invention, a manufacturing method therefor and a special suit thereby.

Filtered fabric for protecting the toxic material according to an embodiment of the present invention, as shown in Figure 2, the first layer (L1), the first sorption layer (F1), activated carbon beads (B), the second layer (L2) ), A third layer L3 and a second sorption layer F2.

The first layer L1, the second layer L2, and the third layer L3 are formed of fabrics capable of communicating air. In particular, the first layer (L1), the second layer (L2) and the third layer (L3) is preferably made of a fabric manufactured to see through the opposite side as shown in FIG. Such a fabric may be composed of, for example, a knit or a tricot, but may also be composed of a nonwoven fabric as shown in FIG. 6. In this case, the nonwoven fabric may be composed of a hot melt nonwoven fabric coated with a hot melt of a thin film on the surface for ease of forming the first to fourth sorbent layers F1 to F4 to be described later. The hot melt nonwoven fabric may be pretreated to melt the hot melt on the surface by heat before molding the first to fourth sorption layers F1 to F4 (optional). That is, the hot melt nonwoven fabric serves as a primer for smooth molding (coating) of the first to fourth sorbent layers F1 to F4 by providing a fine unevenness by melting the hot melt on the surface.

The first sorption layer F1 is formed on the surface (lower surface) of the first layer L1 by a sorption coating agent. Such a sorbent coating agent is composed of a paint-like material in which powder activated carbon 11, a matrix 12, a matrix S, and a particulate filler A are mixed as shown in FIGS. 15 and 16.

The matrix 12 is composed of a thermosetting or thermoplastic gel or colloid, in which the activated carbon 11 is mixed and cured into a solid phase in a liquid phase. The matrix 12 is hardened to provide a sorption layer (F1 to F4) in the form of a sheet as described below. . That is, the matrix 12 is formed in a film form on the surface of the first to fourth layers L1 to L4 as described later, as the matrix 12 is coated and cured.

Matrix 12, for example, excellent adhesion to the fiber even under low temperature curing conditions, excellent adhesion to the fiber, by improving the durability of the sorption layer according to an embodiment of the present invention to be described later by giving elasticity to the sorption layer Environmentally friendly water-based urethanes are used alone or additionally acrylic or melamine resins having excellent moisture resistance, hardness and moldability depending on the required physical properties, and epoxy, silicone, phenol and polyamic acid having adhesiveness, strength, chemical resistance and heat resistance. Or the like may be used alone or in combination. The matrix 12 binds the activated carbon 11 during curing to prevent the flow of the activated carbon 11. In other words, the matrix 12 serves as a binder.

Activated carbon 11 is mixed into the viscous matrix 12 as shown in FIG. 15 and then bound by curing of the matrix 12. Activated carbon 11 soaks toxic substances through pores (not shown) and pores (H), which will be described later, even when mixed with the matrix 12 as shown in FIGS. 16 and 17. In other words, activated carbon 11 is filtered by toxic chemicals such as chemicals and chemicals harmful to the human body, in particular toxic substances in liquid or gaseous phase. Activated carbon 11 is composed of a powder to be easily mixed with the matrix 12 of the liquid phase.

Activated carbon 11 is, for example, graphene (graphene), graphite, metal oxides (Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ , MgO, CaO, TiO ₂ , ZnO, V ₂ O ₅ ) alone or two or more are mixed Can be used. The activated carbon 11 may contain Cu, Ag, Fe, and Ce so as to enhance the selective adsorption performance according to the type of the toxic material. The activated carbon 11 is preferably formed with a particle size (particle size) of 0.1 µm to 300 µm, most preferably 3 µm to 20 µm. The smaller the size of the activated carbon is, the more preferable is the size because the effective area for dispersibility and adsorption when mixed with the matrix 12 is excellent. The activated carbon 11 is preferably composed of, for example, a hydrophilic palm tree among various kinds.

The solvent 12 is mixed into the matrix 11 as shown in FIG. 15 and prevents the matrix 11 from curing too quickly. The solvent (S) may be composed of at least one material that is compatible with other components, for example, and has physical properties suitable for curing and working conditions. In other words, the solvent 12 is composed of a matrix 11 or a substance which is easily miscible with the fluidity control additive described later. In particular, the solvent 12 is preferably composed of a material that is evaporated, dried or dissipated by heat during the heat treatment process as described below. The solvent S is preferably composed of a substance remaining compatible for the time required for workability at the time of mixing with the matrix 12. For example, the solvent (S) may be composed of at least one of alcohol, water, ethylene glycol, butyl carbitol, butyl cellulose unit, and terpineol. That is, the solvent (S) may be composed of one or a mixture of the listed materials.

The solvent S provides fine pores, such as pores, to the cured matrix 12 while evaporating or drying or dissipating upon the curing of the matrix 12. Accordingly, the matrix 12 may supply the toxic substance to the activated carbon 11 through the pore.

The particulate filler (A) is composed of a plurality of fine particles, and is mixed in the matrix 12 together with the activated carbon 11 and the solvent S as shown in FIG. 15. The particulate filler (A) is preferably made of a material having high solubility so as to be easily mixed with the matrix 12. The particulate filler A is adhered to the outer circumferential surface of the activated carbon 11 as shown in FIG. 16A, and after the matrix 12 is cured, the particulate filler A is extracted and removed from the matrix 12. At this time, the particulate filler (A) provides pores (H) consisting of a bubble-shaped cavity on the outer peripheral surface of the activated carbon 11, as shown in (b) of FIG. That is, the pores H form bubble-like fine pores as shown in FIG. 17 inside the matrix 12 due to the vacancy of the particulate filler A as the particulate filler A is removed, that is, Forming micropores provides a passage for guiding toxic substances on the outer circumferential surface of the activated carbon (11). Therefore, even if the activated carbon 11 is mixed in the matrix 12, the adsorption performance is improved because the sorption area, ie, the specific surface area (exposure area), which is in contact with the toxic substance by the pores H is expanded.

The particulate filler (A) is a substance composed of a liquid or liquefied gas having a particle size which is the same as or similar to that of the solvent S, or which has a different particle size (larger or smaller) than the solvent S. These particulate fillers (A) can be extracted from the matrix (12) while evaporating or drying to dissipate upon curing of the matrix (12), such as solvent (S). Alternatively, the particulate filler (A) may be extracted from the matrix 12 through a chemical reaction with the reactant in contact with a separate extraction solvent, ie the reactant. The particulate filler (A) may be composed of at least one of, for example, ammonia, freon, chlorine, nitrogen, and carbon dioxide. In other words, the particulate filler (A) may be composed of a liquid and / or gaseous substance. The reactant may be composed of a degassing agent, an antifoaming agent, and the like, which are extracted through a chemical reaction with ammonia, freon or chlorine, nitrogen, and carbon dioxide.

Here, the above-mentioned pores (H) is formed by the cavity of the particulate filler (A) composed of the fine particles, so that the pores (H) is formed to a size that allows the permeation of a gas such as air while preventing water from permeating the cured matrix 12 . Therefore, the pores H guide the activated carbon 11 into the gaseous toxic substance in fact. However, the pores (H) can also guide the activated carbon 11 in the form of liquid toxic substances in the form of steam.

In conclusion, the particulate filler (A) is composed of fine particles that provide micropores, but are sized to provide micropores that can only penetrate air, and are removed from the cured matrix 12 to form fine particles in the matrix 12. A pore-forming material that provides pores. In addition, when the matrix 12 is coated with a thin film and then cured, when the matrix 12 is formed into a sheet in the form of a coating film, fine pores and cavities due to the particulate filler (A) and the solvent (S) By the air permeability is secured.

On the other hand, in the activated carbon 11, when the particulate filler A is not mixed with the matrix 12, the outer circumferential surface is shielded by the matrix 12, and only a part of the activated carbon 11 is opened by the pores of the solvent S described above. However, when the activated carbon 11 is removed after the particulate filler A is mixed in the matrix 12, the above-mentioned pores H are formed on the outer circumferential surface as shown in FIG. 17, so that the open area of the outer circumferential surface is solvent ( Only S) is expanded than when mixed. Therefore, the activated carbon 11 is very preferably mixed with the particulate filler (A) in the matrix 12 in order to improve the sorption performance.

On the other hand, the above-mentioned sorbent coating agent is mixed with the matrix 12 in an amount of 24 to 75 parts by weight based on 100 parts by weight of activated carbon 11. The solvent S is mixed in an amount of 106 to 205 parts by weight based on 100 parts by weight of the activated carbon 11. The particulate filler (A) is mixed in an amount of 0.2 to 57 parts by weight based on 100 parts by weight of activated carbon 11. To this end, the sorption coating agent has about 5 to 70 wt% of activated carbon 11, about 5 to 30 wt% of matrix 12, about 0.1 to 20 wt% of particulate filler (A) and the balance of solvent (S). Is prepared by mixing. At this time, the solvent (S) is preferably composed of about 37wt% to 72wt% (this mixing ratio is the optimum mixing ratio as described below-see later).

If the activated carbon 11 is less than 5wt%, the desired adsorption capacity cannot be expected. If the activated carbon 11 exceeds 70wt%, not only printability is lowered but also laundry durability is lowered. The matrix 12 has a problem in washing durability due to a decrease in adhesive strength with the fabric when the content is less than 5wt%, and when the content exceeds 30wt%, it affects the specific surface area and active site of the activated carbon 11 and thus the sorption power is reduced. It is preferably mixed at 5 to 30 wt%. When the particulate filler (A) is less than 0.1wt%, the desired pores (H) cannot be expected, and when the particulate filler (A) is more than 20wt%, the viscosity of the matrix 12 may be increased to reduce printability. The solvent (S) promotes the curing rate of the matrix 12 too fast when less than 37 wt%, and extends the curing rate of the matrix 12 too much when it exceeds 72 wt%.

Meanwhile, the sorbent coating agent configured as described above may further include a fluidity control additive in some cases. Such flow control additives may be composed of, for example, surfactants (including negative, positive and neutral ions). The fluidity control additive improves the printability of the sorbent coating agent made of a paint such as ink or paint, and adjusts physical properties such as dispersibility and stability. In particular, the fluidity control additive improves the dispersing properties of the activated carbon 11, and adjusts the viscosity and fluidity of the matrix 12 to provide stability in storage and smooth workability and printability in coating or application, and coating type printed matter. The surface properties of the are kept uniform.

Here, the above-mentioned fluidity control additive is preferably composed of about 0.035 wt% to 17.5 wt% to be mixed at 0.1 to 50 parts by weight based on 100 parts by weight of activated carbon 11, for example. If the additive content is less than 0.035wt%, the thixotropy of the above-mentioned sorbent coating agent is not possible to print smoothly, and if the content is more than 17.5wt%, the thixotropy is lowered, resulting in poor workability and activated carbon (11). Of the outer peripheral surface is shielded by the matrix 12, the adsorption performance is lowered.

The sorbent coating agent configured as described above is introduced into the matrix 12 by the solvent S, the activated carbon 11 and the particulate filler A, respectively, and mixed by stirring to prepare a liquid coating material such as gel or colloid. . At this time, the water-soluble coating agent may be mixed with the above-described flow control additive. As shown in FIG. 15, the sorbent coating agent is applied to the fabric T of the same material as the first layer L1 and cured to provide a sorbent layer F in the form of a film. That is, the sorbent coating agent provides a fabric T having a sorbent layer F.

Applicant of the present invention by using the fabric (T), that is, the sorption layer (F) is coated on the front fabric (T) to make a test specimen for the experiment as follows. At this time, the specimen was tested by configuring the "Experimental Examples 1 to 15" by the sorbent coating agent composed of various composition ratios, as shown in Figure 18, was tested by measuring the adsorption capacity before and after washing. Then, the products of the prior art 1 to which the bead activated carbon mentioned in the prior art and the products of the prior art 2 simply sprayed with activated carbon powder were tested together as a comparative example. At this time, each fabric is impossible to use the actual chemical agent, and the protection performance was evaluated by the liquid phase test method using a similar agent having a similar molecular structure and properties. For example, a similar agent was made of dimethyl methylphosphonate (DMMP) containing phosphorus (P), an analogue of Soman (GD), and Thiophenol containing sulfur (S), an analogue of Mustard (HD). In the experiment, each fabric (sorbent specimen) was exposed (eg, immersed or sprayed) to a similar agent (liquid sample) to adsorb toxic substances for a predetermined time, and then the adsorption performance was measured in units of time. Subsequently, each fabric was analyzed by GC / UV / Vis spectroscopy, and the residual concentration was calculated by substituting the calibration curve based on the analytical data to calculate the adsorption capacity (sorption capacity) of the sorption layer.

The measurement experiment of washing performance is to wash the specific detergent with 45kg of each fabric (washing material) sufficiently in water of 32 ~ 43 ℃, and then wash it first for 4 ~ 6 minutes, and then wash it again for 2 minutes in the same way. After soaking in water at 32-34 ° C., the first rinse was carried out for 2 minutes, and then again the second and third rinses were carried out in the same manner, followed by dehydration for 3-5 minutes, followed by drying at 19 ° C. for 35-50 minutes. The adsorption capacity after washing was measured.

As a result, as shown in FIG. 18, in the experimental example 1, the washing resistance was excellent, but there was no adsorption performance as there was no adsorption capacity before and after washing due to insufficient mixing amount of the activated carbon 11, In the case of low viscosity and poor printability, not only the thickness of the adsorption layer was not sufficiently formed, but also the washing resistance was reduced. In the case of Experimental Example 3, although the washing resistance was excellent, pores (H) were formed on the outer circumferential surface of the activated carbon 11. As a result, the specific surface area of the activated carbon 11 was not secured to the maximum, so that the adsorption performance was lowered. Experimental Example 4 was inadequate in the ratio of the matrix 12 compared to the activated carbon 11, so washing durability was excellent, but the adsorption performance was insufficient due to the lack of activated carbon (11), and Experimental Examples 5 and 6 determine the laundry durability. The content of the matrix 12 was sufficient to ensure washing resistance, but the problem of printability occurred due to an inappropriate ratio of the activated carbon 11 and the particulate filler (A). While improving the printability and adsorption performance by fixing the content of the matrix (12) to ensure the durability of the laundry through the experiment Example 7 to 10, and the composition of the activated carbon (11) and particulate filler (A) to the experimental example The adsorption performance before and after 100,000 washings exhibited the desired adsorption capacity (comparable to the prior art 1). In Experimental Examples 11 and 13 in which the matrix 12 was excessively reduced compared to the content of activated carbon 11 to secure additional adsorption performance, the adsorption performance was improved but washing durability tended to be lowered. The mixing ratio of the activated carbon 11, the matrix 12, and the particulate filler (A) was optimally formed, and the adsorption performance before and after washing showed an ideal adsorption capacity (better than the prior art 1).

Here, Experimental Example 12 has a specific surface area smaller than that of Prior Art 1 of the Comparative Example, as shown in FIG. 18, but is superior in adsorption performance. The reason is that in the case of the prior art 1, the activated carbon beads are spherical and the specific surface area is wide, but the adsorption performance is thought to be small compared to the specific surface area because the toxic substances pass through the outer circumferential surface of the activated carbon beads due to the spherical shape characteristics. . On the other hand, Experimental Example 12 is considered to be superior to the prior art 1 even if the specific surface area is small because it is directly faced with toxic substances as formed in the plane.

On the other hand, in the case of the prior art 2, the adsorption capacity before washing was excellent, but it was confirmed that the adsorption performance was lost as all of the activated carbon was removed during washing.

In conclusion, the above-mentioned sorbent coating agent has better adsorption than the comparative examples when the activated carbon 11, the matrix 12, and the particulate filler (A) are mixed at the optimum ratio as described above through the above experimental results. It is clear that it can provide performance. Therefore, the applicant of the present invention was able to find the optimum mixing ratio as described above through the above experiments.

On the other hand, in the experimental example 12 described above, the pore (H) is formed on the outer circumferential surface of the activated carbon 11 of the sorption layer by the particulate filler (A) extracted after mixing with the sorbent coating film ratio of the activated carbon 11 It is thought that the adsorption performance is greatly improved as the surface area is secured to the maximum and the sorption layer provides a specific surface area separate from the activated carbon beads (B). Accordingly, it is considered that the adsorption performance is further enhanced when the sorption layer is composed of a plurality. In addition, it is possible to reduce the size of the activated carbon bead (B) because it provides an excellent adsorption performance than conventional products, and thus it is expected to reduce the overall weight of the fabric.

On the other hand, the above-mentioned first sorption layer F1 has a thick film spaced apart from the lower surface of the first layer L1 by the sorption coating agent prepared as described above at approximately equal intervals as shown in FIG. After being applied in the form of the film is cured and integrally provided in the first layer (L1) in the form of a film. The first sorption layer F1 is applied in the form of a thick film through screen printing, gravure printing, or an ordinary printer such as an inkjet or a 3D printer (sorption layers F2 to F4 described later are the same). The first sorption layer F1 may provide purified air by sorbing toxic substances from air that has passed through the first layer L1.

The activated carbon beads B described above are spherical activated carbon having a diameter larger than the diameter of the first sorbent layer F1 described above but smaller than the diameter of the second sorbent layer F2 described later. It is composed of a plurality of at least one of the top and bottom is fixed to the first sorption layer (F1) or the second layer (L2) to be described later. As the activated carbon bead B is provided below the first sorption layer F1, the activated carbon beads B are sorbed from the air passing through the first layer L1 through the gaps between the spaced gaps of the first sorption layer F1. To provide purified air.

As described above, the second layer L2 of the breathable material is provided with the adhesive AD on the surface (upper surface), so that the lower end of the activated carbon bead B is fixed through the adhesive AD.

As described above, the third layer L3 of the breathable material overlaps the lower portion of the second layer L2 in a spaced state.

The above-mentioned second sorption layer F2 is composed of the above-mentioned sorbent coating agent as shown in FIG. 2, and is applied to the upper surface of the third layer L3 to form a coating film while being spaced at substantially equal intervals and cured. As the film is integrally provided in the third layer (L3). As shown in FIG. 2, the second sorption layer F2 is attached to and fixed to the lower surface of the second layer L2 through the adhesive AD. The second sorption layer F2 provides purified air by sorbing toxic substances from air passing through the second layer L2 through the activated carbon beads B.

As illustrated in FIG. 2, the adhesive AD may be provided on at least one of the surface of the first sorption layer F1 and the upper surface of the second layer L2 on which the activated carbon beads B are fixed. As shown, both places are preferably provided. At this time, the adhesive AD may be provided to form, for example, a dot shape or a spot shape. The adhesive AD is fixed by attaching the upper and lower ends of the activated carbon beads B to the surface of the first sorption layer F1 and the upper surface of the second layer L2, respectively. The adhesive AD may be composed of a hot melt adhesive having excellent adhesion among various adhesives.

Here, the aforementioned first layer L1 may not include the aforementioned first sorption layer F1 as illustrated in FIG. 12. In addition, when the first layer L1 and / or the second layer L2 are formed of a general hot melt nonwoven fabric, that is, a nonwoven fabric containing a hot melt adhesive, the adhesive AD described above may be separately applied. no need. In this case, the hot melt nonwoven fabric provides the adhesive AD described above while the adhesive is melted by externally applied heat. Thus, the activated carbon beads B are fixed by the adhesive AD to the first layer L1 and / or the second layer L2 composed of a hot melt nonwoven fabric (see FIGS. 2 and 12).

As illustrated in FIG. 2, the adhesive AD may be provided on the upper surface of the second sorption layer F2 formed on the upper surface of the third layer L3 (for example, to form a dot shape). In this case, the second sorption layer F2 may have an upper surface attached to the lower surface of the second layer L2 through the adhesive AD. In this case, the third layer L3 is substantially overlapped with the lower part of the second layer L2 as shown by the second sorption layer F2 to form a substantially unitary body with the second layer L2. However, the second sorption layer F2 may not be attached to the lower portion of the second layer L2 so that the second layer L2 and the third layer L3 are spaced apart to form an air layer therebetween. In this case, the second sorption layer F2 smoothly flows through the air layer, and the adhesive AD is omitted on the upper surface thereof, so that the specific surface area is expanded, so that the larger amount of the toxic substance may be sorbed.

Here, the above-mentioned first sorption layer F1 and the second sorption layer F2 are spot to linear (linear) on the first layer L1 and the third layer L3 as shown in FIGS. 2 and 6. In the form of diagonal lines, curves, or lattice, etc., to provide an aeration path through which air is communicated through spaced gaps as they are formed at approximately equal intervals. That is, the first sorption layer F1 and the second sorption layer F2 are formed in a discontinuous form. (Note: The third and fourth sorption sides described later are also formed in a discontinuous form.)

The first sorption layer F1 and the second sorption layer F2 are formed into a coating film having a spot pattern as described above, and as shown in FIG. 6, a circular shape (possible oval) or a polygon (triangle to Octagonal shape). In the case of a circular or polygonal shape, the first and second sorption layers F1 and F2 may be molded to easily maintain the separation distance between the patterns.

It is preferable that the 1st sorption layer F1 and the 2nd sorption layer F2 are shape | molded to thickness of about 5-70 micrometers. The thicker the first sorption layer (F1) and the second sorption layer (F2), the higher the content of activated carbon is, so that the filtration performance is improved. There is a problem in that the activity is lowered by increasing the weight of the fabric.

As shown in FIG. 7, the first and second sorption layers F1 and F2 are preferably molded to a diameter (size) of 0.1 mm to 5 mm. In addition, it is preferable that the size (diameter) of the spots is different from each other in the first and second sorption layers F1 and F2. In particular, the first sorption layer F1 is preferably configured to have a diameter smaller than the diameter of the second sorption layer F2 as shown so that air passing through the first layer L1 is finely dispersed. The first sorption layer (F1) is preferably composed of a diameter of about 0.1mm ~ 0.5mm, and spaced at intervals of about 0.1 ~ 0.2mm for sufficient dispersion of air. The second sorption layer F2 may be spaced apart at an interval of about 2 to 5 mm in size (diameter) and about 2 to 5 mm to smoothly contact the air with the surface. When the first sorption layer F1 has a diameter of less than 0.1 mm, the sorption performance is not sufficient. If the first sorption layer F1 is larger than 0.5 mm, the first sorption layer F1 does not smoothly disperse air. If more than 0.2mm apart, there is a problem of transmitting too much air. If the second sorption layer (F2) is composed of a diameter of less than 2mm, the sorption performance is lowered, if more than 5mm, the breathability is lowered, if the distance is less than 2mm, the breathability is bad, if too more than 5mm apart Since a large amount of air is permeated, leakage of toxic substances may occur. Therefore, it is preferable that the 1st sorption layer F1 and the 2nd sorption layer F2 are shape | molded at the diameter and space | interval as mentioned above.

The first and second sorption layers F1 and F2 may be molded in a form that is shifted from each other, as shown in FIG. 2. In this case, the second sorption layer F2 may substantially face air introduced into the spaced gap between the first sorption layer F1. Therefore, the second sorption layer F2 may sorify more toxic substances in the introduced air.

Meanwhile, as shown in FIG. 3, the third layer L3 is formed of the above-mentioned sorbent coating agent on the lower surface opposite to the second sorption layer F2 to form a coating film to a film form at substantially equal intervals. The third sorption layer F3 may be provided. The third sorption layer F3 is molded to the same size (diameter) and the same separation distance as the above-described first sorption layer F1. However, as shown in FIG. 4, the third sorption layer F3 may be formed to have the same size and separation distance as that of the second sorption layer F2 described above, and may be formed to have a shape that is shifted from the second sorption layer F2. May be The third sorption layer F3 further sorbs toxic substances from the air passing through the third layer L3 to provide purified air.

In addition, as illustrated in FIG. 5, the third layer L3 may be provided with a fourth layer L4 below. The fourth layer L4 is made of a fabric of the aforementioned breathable material. As shown in FIG. 4, the fourth layer L4 is formed of the above-mentioned sorbent coating agent, and is formed in a film form while being applied and cured in the form of a coating film while forming a spaced state at substantially equal intervals. The fourth sorption layer F4 may be formed to have the same size as the above-described second sorption layer F2 or the same size as the above-described first sorption layer F1. As shown in FIG. 4, the fourth sorption layer F4 may be attached to the lower portion of the third layer L3 by the adhesive AD described above. However, the fourth sorption layer F4 may not be attached to the third layer L3 so that an air layer is formed between the third layer L3 and the fourth layer L4. Unlike the illustrated example, the fourth sorption layer F4 may be shaped so as to deviate from the second sorption layer F2. The fourth sorption layer F4 further sorbs toxic substances from the air that has passed through the third layer L3 to provide purified air.

On the other hand, the third layer (L3) or the fourth layer (L4) described above may be provided at the lower portion of the shield (L5) as shown in the virtual line in Figs. The shield L5 is made of a fabric of breathable material to shield the lower portion of the third layer L3 or the fourth layer L4. The shield L5 may be made of, for example, a thin nonwoven fabric, but is preferably made of a material having excellent elasticity, such as knit or tricot, to improve the fit. The shield L5 prevents the activated carbon powder or the activated carbon bead B from leaking out of the third layer L3 or the fourth layer L4 to the outside.

In the filterized fabric for protecting the toxic substances configured as described above, the first to fourth layers L1 to L4 are made of a breathable material, and the first to fourth sorption layers F1 to F4 or activated carbon beads therebetween. Since the (B) is provided through the air can be filtered through the toxic substances to provide purified air to the human body. In particular, since the first to fourth sorption layers F1 to F4 filter the air in multiple stages, the human body may be protected from toxic substances even if the activated carbon beads B are dropped.

Meanwhile, the filterized fabric for protecting toxic substances according to an embodiment of the present invention may be configured (fifth embodiment) as shown in FIG. All of the fabrics are the same as the above-described embodiment, except that the above-described first sorption layer F1 is omitted.

12, the upper end of the activated carbon bead B is not attached to the first sorption layer F1, as shown in FIG. 12, but through the adhesive AD on the lower surface of the first layer L1. Attached. Therefore, the activated carbon beads B filter the toxic substances from the air that has passed through the first layer L1. Of course, the second sorption layer F2 provides secondary air by filtration of toxic substances from the air passing through the second layer L2 through the activated carbon beads B. Such fabric may filter toxic substances in multiple ways through the activated carbon beads (B) and the second sorption layer (F2).

Here, when the activated carbon bead B is firmly fixed to the second layer L2 through the adhesive AD of the second layer L2, the first layer L1 may be formed on the lower surface of the adhesive AD. May be omitted. In other words, the activated carbon bead (B) may be configured such that only the bottom is fixed. However, since activated carbon beads (B) may fall off during washing only when the lower end of the activated carbon bead (B) is fixed, both upper and lower ends are preferably fixed.

In addition, the above-described second sorption layer F2 may be formed on the lower surface of the second layer L2 as shown in an enlarged view of FIG. 12. In this case, the second sorption layer F2 may omit the third layer L3 in order to reduce the overall weight of the filter-ized fabric, and the above-described shield L5 or the endothelium IL described later may be the third layer L3. May be provided instead. As shown in the enlarged view, when the third layer L3 is provided, the second sorption layer F2 may be formed as a single body with the third layer L3. It may also be attached to L3). The application of the third layer L3 is determined by the filtration performance required when the second sorption layer F2 is configured as shown enlarged.

Meanwhile, the filterized fabric for protecting toxic substances according to an embodiment of the present invention may be configured (sixth embodiment) as shown in FIG. 13. This fabric is the same as the first embodiment of FIG. 2 described above, except that the adhesive AD is omitted in the first sorbent layer F of the first layer L1, and the second sorbent layer F2 is made of a nonwoven fabric. The difference is that the bottom surface of the second layer L2 formed of a tree code is provided.

As shown in FIG. 13, the second layer L2 is provided with a third layer L3 on the lower surface, and activated carbon beads B through the second sorption layer F2 formed in a film shape on the lower surface. Filter out toxic substances introduced between. As shown in the drawing, when the adhesive AD is provided on the second sorption layer F2, the second layer L2 may be laminated to the third layer L3. When the second layer L2 is provided with the shield L5 transferred instead of the third layer L3 or the endothelium IL shown as an imaginary line, the second layer L2 may be used to reduce the overall weight of the filtered fabric. The adhesive AD of L3) and the second sorption layer F2 may be omitted. However, in the second layer L2, when the third layer L3 is omitted, the second sorption layer F2 may contact the shield L5 or the endothelium IL, and thus the fit may be degraded. Is preferably provided.

Meanwhile, the filterized fabric for protecting toxic substances according to an embodiment of the present invention may be configured (seventh embodiment) as shown in FIG. 14. The fabric is configured in the same manner as in FIG. 13 described above, except that the second sorption layer F2 is provided on the upper surface of the third layer L3. In the seventh exemplary embodiment, as illustrated, the second sorption layer F2 may be attached to the lower surface of the second layer L2 formed of a nonwoven fabric or a tricoat through the adhesive AD. Therefore, the third layer L3 is formed of a nonwoven fabric or a tricoat and thus is substantially integrated with the second layer L2 to form a single body with the second layer L2. In addition, the first layer L1 has an adhesive AD provided in the first sorption layer F1 so that the activated carbon beads B may be stably fixed, and thus, an upper end of the activated carbon beads AD may be provided. It may be fixed to the sorption layer (F1).

On the other hand, the first layer (L1) provided in the above-described embodiments has an outer surface (for example, the opposite side of the first sorption layer) facing toward the outer surface (OL), as shown in phantom line in FIG. Can be shielded. The outer shell (OL) is made of a breathable material, it may be composed of a fabric of water repellent to oil repellent material. The outer shell (OL) is composed of, for example, a conventional Gore-Tex fabric that allows air to pass while liquid materials are prevented from permeating, or has excellent chemical resistance and does not change its properties even at high temperatures, PTFE, waterproof, windproof, It can be composed of a fabric equipped with a film or membrane of EPTFE (Expanded polytetrafluoroethylen) material having moisture permeability at the same time.

Here, the above-described first layer L1 may be made of the same fabric as the above-described envelope OL. That is, the first layer L1 may be made of a fabric that can be ventilated and water repellent. In this case, the aforementioned outer skin OL can be omitted. Therefore, the filterized fabric according to the embodiment of the present invention can reduce the overall weight.

On the other hand, all the embodiments described are provided with the shield L5 and / or the endothelium IL described above, although not illustrated in the drawings. Endothelial (IL) may be composed of a highly breathable fabric (eg, knit or tricot), and is adjacent to the wearer's skin to improve the fit. Endothelial IL may be adhered by adhesive AD, and may be omitted when shield L5 is provided. That is, since the shield L5 may play a role of the endothelial IL, the endothelial IL may be omitted.

Meanwhile, in order to manufacture the fabric of FIGS. 1 to 5 as described above, first, a powdered activated carbon, a solvent, and a particulate filler are mixed with a toxic substance in a matrix of a viscous thermosetting to thermoplastic material that can be cured from a liquid phase to a solid phase. To form a mixture, and stirred to disperse the mixed components to prepare a sorbent coating agent. At this time, the water-soluble coating agent is prepared in the form of gel or colloid by mixing and stirring 24 to 75 parts by weight of matrix, 106 to 205 parts by weight of solvent and 0.2 to 57 parts by weight of particulate filter based on 100 parts by weight of activated carbon.

Subsequently, when the first sorption layer F1 is required, a spot or a linear form is formed while the sorption coating agent is spaced at substantially equal intervals on the surface (lower surface) of the first layer L1 made of a breathable material. It is applied in the form of a thick film to achieve a, heat treatment (heating) for about 2 to 25 minutes, especially 4 to 15 minutes under conditions of about 80 ℃ to 200 ℃, especially 120 to 180 ℃ hardened by cooling to room temperature at room temperature Let's do it. At this time, the water-soluble coating agent is molded in a spaced state by a conventional screen printing method. Therefore, the first sorption layer F1 for soaking the toxic substance on the lower surface of the first layer L1 is molded in the form of a film.

Next, when adhesion is required, the adhesive (AD) of a thermosetting or thermoplastic material (for example, resin or hot melt, etc.) is applied (for example, in the form of a dot) to the surface of the first sorption layer F1, but normal screen printing is performed. It is applied to a thickness similar to or the same as the thickness of the first sorption layer (F1) by the method or gravure printing method (additional adhesive coating step). Apart from this, the adhesive AD is applied to the surface (upper surface) of the second layer L2 formed under the first layer L1 and made of a breathable material (for example, to form a dot shape). (Secondary adhesive application step). In this case, when the second layer L2 is made of a hot melt nonwoven fabric, the adhesive AD uses an adhesive contained in the second layer L2 without separately applying it. Subsequently, the lower end of the activated carbon beads B formed in the form of granules or spheres is fixed to the surface (upper surface) of the second layer L2 to which the adhesive agent AD is applied.

Next, after fixing the upper end of the activated carbon bead (B) to the surface of the first sorption layer (F1) coated with the adhesive (AD), as shown in the third layer to be installed below the second layer (L2) On the surface (upper surface) of (L3), the sorbent coating agent is applied in the form of a thick film spaced apart in the form of spots or linears, and then cured by cooling at room temperature or by heating, and then on the upper surface of the third layer (L3). The second sorption layer F2 is shaped into a film. In this case, the second sorption layer F2 may be formed on the lower surface of the second layer L2 instead of the upper surface of the third layer L3.

Subsequently, the second sorbent layer F2 in the form of a film containing the particulate filler A is immersed in the reactant for extracting the particulate filler or washed with the reactant to contact the reactant. At this time, the reactant chemically reacts with the particulate filler contained in the second sorption layer F2 to remove the particulate filler A from the second sorption layer F2. Therefore, the above-mentioned pores H are formed in the outer circumferential surface of the activated carbon 11 in the second sorption layer F2.

Subsequently, the second sorbent layer F2 is removed from the reactant and dried to remove the reactant from the second sorbent layer F2. However, the reactant may be removed by a method other than drying, for example, washing with water.

Here, the above-mentioned reactive agent is also contacted with the above-mentioned first sorption layer F1 or the third and fourth sorption layers F3 and F4 by the above-described method and then removed by the above-described method. Accordingly, the pores H are secured in the first sorption layer F1 and the third and fourth sorption layers F3 and F4.

Thereafter, the second sorption layer F2 formed on the surface (upper surface) of the third layer L3 is fixed to the surface (lower surface) of the second layer L2. The second sorption layer F2 is attached to the second layer L2 through the adhesive AD as the adhesive AD is applied to the surface (primary adhesive application step) before the adhesion. Therefore, the third layer L3 is attached to the second layer L2 through the second sorption layer F2 and laminated. In this case, the third layer L3 is firmly laminated on the second layer L2 as the third layer L3 is stacked with the second layer L2 and compressed.

Finally, the first layer L1 is laminated on the second layer L2 on which the activated carbon bead B is fixed to shield the upper part of the second layer L2. In this case, the first layer L1 is applied to the second layer L2 through the first sorption layer F1 adhered to the upper end of the activated carbon bead B by applying the adhesive AD as described above. Can be laminated. Alternatively, the first layer L1 may be stacked on the upper portion of the second layer L2 without the first sorption layer F1 or the adhesive AD to shield the second layer L2. 1, only the adhesive AD is applied without the sorption layer F1, and may be fixed to the second layer L2 through the adhesive AD as described below.

Here, the activated carbon beads (B) described above are fixed at the bottom by the following methods.

(1) spray the activated carbon beads (B) on the upper surface of the second layer (L2) to which the adhesive (AD) in liquid or molten state is applied, and (2) the lower end of the activated carbon beads (B) is the adhesive (AD) After pressing the upper surface of the second layer (L2) through a conventional rolling roller or the like not shown to be embedded in the compressed carbon bead (B), (3) the activated carbon bead (B) is the adhesive (AD) Curing the adhesive (AD) through room temperature drying or heat so as to be firmly fixed by (4) a conventional vibrator (e.g., a vibration motor not shown) to remove activated carbon beads (B) that are not attached to the adhesive (AD) Etc.) to shake off the unattached activated carbon beads (B) by vibrating the second layer (L2), or by applying a vacuum pressure to the upper surface of the second layer (L2) to remove the unattached activated carbon beads (B).

Alternatively, (1) a reservoir (not shown) in which a plurality of activated carbon beads B are stored by inverting the upper surface of the second layer L2 to which the adhesive AD in a liquid or molten state is applied downwards. (2) pressurizing the second layer (L2) inserted into the reservoir to attach the activated carbon beads (B) to the molten adhesive (AD), and (4) the second with the activated carbon beads (B) attached thereto. The top surface of the layer L2 is turned upside down again, and then reversed. (5) The adhesive AD is cured by drying at room temperature or by heat so that the activated carbon beads B are firmly fixed by the adhesive AD. .

Moreover, the upper end of the activated carbon bead B may be fixed by the following method.

(1) A first layer L1 having a first sorption layer F1 coated with an adhesive AD in a liquid or molten state is laminated on a second layer L2 to which activated carbon beads B are laminated. (2) compressing at least one of the combined first layer L1 and the second layer L2 in the same manner as described above, and (3) applying the first sorption layer F1. The adhesive AD is cured in the manner described above to fix the upper end of the charcoal bead B to the surface of the first sorption layer F1.

In addition, the third layer L3 and the second layer L2 are laminated by the following method.

(1) A liquid adhesive AD is applied to the surface of the second sorption layer F2 formed on the upper surface of the third layer L3 or the lower surface of the second layer L2 (for example, to form a dot shape). (2) The third layer L3 is pressed in a laminated state with the second layer L2, and the third layer L3 and the second layer L2 are laminated through the adhesive AD.

Here, as described above, the activated carbon bead B may have a lower end attached to the second layer L2 first and then an upper end attached to the first sorption layer F1. After attaching to the layer F1, the bottom may be attached to the second layer L2. This order can be optionally changed as needed.

Meanwhile, the third and fourth sorption layers F3 and F4 described above may be formed on the third layer L3 and / or the fourth layer L4 in the same manner as the first or second sorption layer F2 described above. Molded. Therefore, a process in which the third and fourth sorption layers F3 and F4 are molded or laminated to the third layer L3 and / or the fourth layer L4 will be omitted.

On the other hand, the fabric shown in FIG. 12 described above is manufactured by the same method as described above, but omits the manufacturing method of the first sorption layer (F1) described above, instead of the surface of the first layer (L1) The adhesive AD is provided to fix the upper end of the activated carbon bead B to the surface of the first layer L1 through the adhesive AD. In this case, the adhesive AD uses an adhesive contained in the first layer L1 when the first layer L1 is formed of a hot melt nonwoven fabric.

Activated carbon bead (B) is fixed to the upper surface of the second layer (L2) through the adhesive AD of the second layer (L2) described above, the upper end of the adhesive (AD) of the first layer (L1) It is fixed to the lower surface of the first layer (L1) through. Then, the first layer L1 is combined with the second layer L2 having the activated carbon bead B fixed (bottom fixed) and then compressed, and then the adhesive AD is cured in the manner described above. Therefore, the activated carbon beads B are firmly fixed to the upper and lower ends of the first layer L1 and the second layer L2.

Here, as described above, the activated carbon bead B may have a lower end attached to the second layer L2 first and then an upper end attached to the first layer L1. After attaching to L1), the lower end may be attached to the second layer L2. This order can be optionally changed as needed.

On the other hand, the fabric shown in Figure 13 is manufactured by a method similar to the method described above, except that the application of the adhesive (AD) to the first sorption layer (F1), the second sorption layer (F2) is removed The difference is that it is molded in the lower part of the two layers L2. In addition, the fabric shown in FIG. 14 is also manufactured by a method similar to that described above, except that the application of the adhesive AD to the first sorption layer F1 is omitted. Accordingly, the fabric of FIGS. 13 and 14 can be manufactured by the method described above.

On the other hand, the fabric prepared as described above may be made of special clothing for the protection of toxic substances. In other words, the above-described fabric may be made of special clothing such as chemical protective clothing or permeable protective clothing. When the fabric is made of special clothing, at least one of the outer skin (OL) and the inner skin (IL) may be provided at the upper and lower parts shown in FIG. 8, between the outer skin (OL) and the inner skin (IL). Provided as medium blood. The outer shell OL is preferably made of a material (eg, Gore-Tex) capable of water repellency and aeration. In addition, the inner skin (IL) is preferably composed of a fabric (eg, non-woven fabric or tricoat) that is excellent in fit and breathable. The outer skin OL and the inner skin IL are preferably spaced apart from the intermediate skin ML to secure air permeability, as shown in FIG.

On the other hand, the air permeability, weight or adsorption performance of the filter rise fabric according to the embodiment as described above using the carbon tetrachloride (CCL ₄ ) and the experimental results are as follows. First, the fabric according to the embodiment of the present invention does not significantly reduce the resistance to toxic carbon tetrachloride (CCL ₄ ) even when the washing time is increased as shown in the solid line graph of FIG. 9, while activated carbon beads (B) In the case of only the fabric (eg, prior art 1), as shown in the dotted line graph, it was confirmed that as the washing time elapsed, the activated carbon beads dropped and the protection against toxic substances was lowered. At this time, the dropping of activated carbon beads or powdered activated carbon can be confirmed by the weight on the graph.

And, the fabric of the present invention is an experimental result of applying the screen used for the application of the adhesive (AD) for adhering the activated carbon beads (B) to 150 ~ 300 mesh as shown in FIG. At this time, the black and white bar graphs of the drawings show the weight of activated carbon before and after washing, respectively, and the solid and dashed lines of the drawings show the protection performance before and after washing, respectively. Looking at the solid line graph (before washing), as the mesh is increased, the screen is denser and the amount of the adhesive (AD) decreases, but as the activated carbon bead (B) is sufficiently attached, the protection performance before washing showed the desired performance. However, when looking at the dotted line graph (after washing), in the case of 300 mesh, as the amount of adhesive (AD) is significantly reduced, dropping of activated carbon beads (B) occurs during washing, which reduces overall weight and protects at the same time as a white bar graph. The performance did not meet the required performance. That is, in the case of 300 mesh, due to the dropping of the activated carbon bead (B) was not able to function as a protective filter. Therefore, the screen for applying the adhesive (AD) was confirmed that 150 to 250 mesh is suitable.

On the other hand, Figure 11 is a test of the protective performance and the weight of the fabric shown in Figures 2 to 5, the first bar graph on the left relates to the protective performance of the fabric (first embodiment) shown in Figure 2, the second The bar graph relates to the protection performance of the fabric (second embodiment) shown in FIG. 3, the third bar graph relates to the protection performance of the fabric (third embodiment) shown in FIG. 4, and the fourth bar graph is shown in FIG. It relates to the protection performance of the fabric shown in Example 5 (fourth embodiment). And, the solid line graph relates to the weight of the fabric. As shown, the fabrics shown in Figures 2 to 5 have been found to meet all the regulations that the adsorption performance should be 1.3mg / cm ² or more, as indicated by the bar graph. However, in the solid line graph, it can be seen that the weight becomes heavier from the fabric of FIG. 2 to the fabric of FIG. 5. Therefore, the most efficient fabric for the weight and the protective performance was confirmed that the fabric of Figure 2 is the most efficient.

On the other hand, Table 1 below shows the weight, breathability and protection performance of the fabric (except the outer skin and the inner skin) according to the first to fourth embodiments shown in FIGS.

division First embodiment Second embodiment Third embodiment Fourth embodiment Fabric weight (g / m ² ) 354 376 428 425 Breathability (CFM) 1.02 1.16 1.17 1.12 Protective performance (mg / m ² ) 2.18 2.34 2.77 2.68

In the above table, the first embodiment is the fabric of FIG. 2, the second embodiment is the fabric of FIG. 3, the third embodiment is the fabric of FIG. 4, and the fourth embodiment is the fabric of FIG. 5. For reference, conventional fabrics equipped with only activated carbon beads (prior art 1 / skin and inner skin) have a weight of 391g, and the breathability of the test piece composed of fabric and skin is 1.20CFM, and the protection performance is 2.75mg / cm ² .

As shown in the table, the fabric of FIG. 2 is the smallest in weight, and the breathability of the fabric is superior to that of the conventional fabric, and only the protection performance was found to be somewhat lower than in other embodiments, but the regulation (1.3mg / cm ² Above) showed suitable protective performance. In addition, the fabric of Figure 3 to Figure 5 of the fabric of Figure 2 appeared to be too heavy compared to the fabric of Figure 2, both breathable and protective performance was found to meet. Thus, it can be seen that the fabric of Figure 2 is the most efficient.

On the other hand, the fifth to sixth embodiments showed almost the same results as the above-described embodiments. This will be described with reference to Table 2 below.

division Fifth Embodiment Sixth embodiment Seventh embodiment Fabric weight (g / m ² ) Before washing347 After washing336 Before washing358 After Washing347 Before washing359 After Washing348 Breathability (CFM) 1.40 1.12 1.20 1.12 1.11 1.01 Protective performance (mg / m ² ) 2.67 2.75 2.81 2.77 2.84 2.79

In the above table, the fifth embodiment is the fabric of FIG. 12, the sixth embodiment is the fabric of FIG. 13, and the seventh embodiment is the fabric of FIG. 14. In the fifth to seventh examples, the air permeability of the fabric (except the outer skin and the inner skin) was almost the same as that of the conventional fabric (prior art 1 / the outer skin and the inner skin), and the protective performance was found to be almost the same or superior. In particular, all the protective performance after washing showed a suitable protective performance in the prescribed (1.3 mg / cm ² or more), it was found that the sixth and seventh examples are the best.

In the drawing, reference numeral 51 denotes a first filter sheet including a first layer L1 and a first sorption layer F1, and reference numeral 52 denotes an activated carbon bead B and a second layer L2. The second filter sheet, reference numeral 53 is a third filter sheet composed of the third layer (L1) and the second or third sorption layer (F2, F3), reference numeral 54 is a fourth layer (L4) and It is a 4th filter sheet comprised by the 4th sorption layer F4. That is, the filterized fabric for protecting toxic substances according to an embodiment of the present invention may be composed of first to fourth filter sheets 51-54. Therefore, the fabric according to the embodiment of the present invention can filter toxic substances in multiple stages.

The foregoing embodiments are merely illustrative of the preferred embodiments of the present invention, and therefore the scope of application of the present invention is not limited to such, and, if essential features can be met, appropriate modifications (structure or configuration of the Change, partial omission or supplement). In addition, the above-described embodiments may be a combination of some or several of the features. Therefore, since the structure and configuration of each component shown in the embodiment of the present invention can be carried out by modification or combination, it is natural that such a modification and combination of the structure and configuration belong to the appended claims.

******* Explanation of symbols *******

AD: adhesive B: activated carbon beads

F1: 1st Sorption Layer F2: 2nd Sorption Layer

L1: first layer L2: second layer

L3: third layer L4: fourth layer

Claims (20)

A first layer made of a fabric of breathable material; A second layer disposed spaced below the first layer and made of a fabric of a breathable material; A plurality of activated carbon beads fixed between the first layer and the second layer, the plurality of activated carbon beads sorbing toxic substances in air passing through the first layer; An adhesive provided on at least one of a lower surface of the first layer and an upper surface of the second layer to which the activated carbon beads are fixed to attach and fix the activated carbon beads; And And a second sorbent layer for sorbing toxic substances in air passing through the second layer through the activated carbon beads fixed with the adhesive. The second sorption layer, It is provided on the upper surface of the third layer made of a breathable material integrally provided on the lower surface of the second layer or superimposed on the lower portion of the second layer, so as to soak the toxic substance transmitted through the second layer, Soluble to provide bubble-like pores to the matrix as it is extracted from the matrix being composed of a powdered activated carbon, a solvent and a viscous thermosetting to thermoplastic matrix, and a plurality of fine particles adhering to the powdered activated carbon. The film is formed on the second layer or the third layer by a sorbent coating agent composed of a particulate filler, but is formed in a discontinuous shape on the second layer or the third layer and spaced apart while soaking toxic substances. Filter line for protection of toxic substances, characterized in that to provide an air passage through which air is communicated De fabric. The method of claim 1, wherein the second sorption layer, The sorbent coating agent consists of a gel or a colloid in which 24 to 75 parts by weight of matrix, 106 to 205 parts by weight of solvent, and 0.2 to 57 parts by weight of particulate filter are mixed with 100 parts by weight of the activated carbon in a film form as it is cured after application. Filtered fabric for the protection of toxic substances, characterized in that the pores can be secured even if molded, so that the toxic substances can be sorbed. The method of claim 1, wherein the second sorption layer, Toxic substance, characterized in that provided in the form of a film on the surface (upper surface) of the third layer facing the second layer, the adhesive is provided on the upper surface is attached to the lower surface of the second layer. Protective filterized fabric. The method of claim 1, wherein the second sorption layer, Filtered fabric for protecting the toxic substances, characterized in that integrally provided on the lower surface of the second layer facing the third layer, is attached to the third layer by the adhesive and fixed. The method of claim 1, The sorbent coating agent is applied to the first layer in the form of a thick film while being spaced apart from the bottom surface of the first layer and is cured integrally provided in the first layer in the form of a film, in the air passing through the first layer Further comprising; a first sorption layer for soaking toxic substances, The first sorption layer, It is formed in the same layer as the second sorption layer discontinuously to the first layer is applied in the form of a thick film and then hardened as it provides a ventilation passage through which air is communicated through the spaced apart Filterized fabric. The method of claim 5, wherein the first sorption layer, Filtered fabric for protecting toxic substances, characterized in that the upper end of the activated carbon bead is fixed through the adhesive as the adhesive is applied to the surface. The method of claim 1, wherein the third layer, Filtered for protecting toxic substances further comprising; a third sorption layer formed of a film form as it is formed in the form of a thick film on the lower surface opposite to the second sorption layer formed in the form of the sorbent coating film and cured De fabric. The method of claim 7, wherein the third sorption layer, Filtered fabric for protecting the toxic substance, characterized in that formed on the lower surface of the third layer in the spot having the same or different diameter than the second sorption layer. The method of claim 1, A fourth layer of breathable material provided below the third layer; And Filtered fabric for protecting the toxic substance further comprises a; the fourth sorption layer formed of a film form as it is formed in the form of a thick film while forming a spaced state on the upper surface of the fourth layer made of the sorbent coating agent. A special clothing for protecting toxic substances manufactured from filterized fabric for protecting toxic substances according to any one of claims 1 to 9. The method of claim 10, The filterized fabric for protecting the toxic material is shielded at the upper part of the outer skin made of the fabric of the breathable material, and used as an intermediate skin to filter the toxic material between the outer skin and the inner skin by shielding the inner skin of the breathable material. Special clothing for the protection of toxic substances. A layer preparation step of preparing a first layer, a second layer, and a third layer made of a fabric of breathable material; It is composed of powdered activated carbon, a solvent, a viscous thermosetting to thermoplastic matrix, and a plurality of fine particles adhering to the activated carbon, and extracted from the matrix to be cured. A coating film manufacturing step of preparing a water-soluble coating film composed of a particulate filler; A coating agent coating step of applying the sorbent coating agent in the form of a thick film having a discontinuity on a lower surface of the first layer or the second layer or an upper surface of the third layer; A sorption layer molding step of curing the coated coating agent to form a first sorption layer or a second sorption layer for soaking a toxic substance in the first layer, the second layer, or the third layer; Pores which form pores made of bubble-shaped cavities in the first or second sorption layer by extracting the particulate filler consisting of a plurality of fine particles from the first or second sorption layer. Forming step; A primary adhesive coating step formed on the second layer or the third layer and applying an adhesive to the second sorption layer in which the pores are formed; Applying a second adhesive to a surface of the second layer; A lower bead fixing step of fixing a lower end of an activated carbon bead in the form of granules or spheres on the surface (upper surface) of the second layer to which the secondary adhesive is applied; A lamination step of bonding and laminating the second layer and the third layer through the primary adhesive applied to the second sorption layer; And An upper shielding step of shielding an upper portion of the second layer by stacking the first layer on an upper portion of the second layer on which the third layer is laminated on the lower surface and a lower end of the activated carbon beads is fixed at an upper surface thereof; Manufacturing method of filterized fabric for protecting toxic substances. The method of claim 12, wherein the coating agent manufacturing step, A mixture preparation step of preparing a mixture by adding a solvent, activated carbon, and particulate filler to the matrix; And A stirring step of dispersing the mixture by stirring; The mixture generation step, A filter for protecting toxic substances, characterized in that the mixture is prepared in a gel or colloid form by mixing 24 to 75 parts by weight of matrix, 106 to 205 parts by weight of solvent, and 0.2 to 57 parts by weight of particulate filter based on 100 parts by weight of the activated carbon. Manufacturing method of rised fabric. The method of claim 12, wherein the coating agent coating step, Applying a primary coating agent to the lower surface of the first layer in the form of a thick film having a discontinuous form; And The sorbent coating agent is applied to the lower surface of the second layer or the upper surface of the third layer in the form of a thick film having a discontinuous form, and is smaller than the size of the spot or linear applied in the primary coating agent application step. Secondary coating agent coating step of applying in a small size; method of manufacturing a filter rised fabric for protecting toxic substances. The method of claim 12, A third adhesive applying step provided between the laminating step and the upper shielding step and applying the adhesive to a lower surface of the first layer facing the second layer; And The bead top fixing step of fixing by fixing the upper end of the activated carbon bead to the lower surface of the first layer through the third adhesive; manufacturing method of the filterized fabric for toxic material protection. The method of claim 12, wherein the pore forming step, The particulate filler is contacted with the first and second sorption layers by contacting the reactant for extracting the particulate filler from the first and second sorption layers through a chemical reaction between the reactant and the particulate filler. The fine particle filler extraction step to extract; And Reactant removal step of removing the reactant from the filter layer; Method of manufacturing a filterized fabric for protecting toxic substances comprising a. The method of claim 12, An additional adhesive application step of applying the adhesive to the first sorbent layer formed in a film form on the lower surface of the first layer through the sorbent layer forming step; And The bead top fixing step of fixing the upper end of the activated carbon bead fixed to the adhesive layer of the first sorption layer, the lower end is fixed to the second layer. The method of claim 17, wherein the bead top fixing step, A layer lapping step of laminating the first layer having the first sorption layer coated with the adhesive to the second layer to which the activated carbon beads are attached; A pressing step of pressing at least one of the combined first layer and the second layer; And And curing the adhesive applied to the first sorption layer to fix an upper end of the slide coal beads to a surface of the first sorption layer. The method of claim 12, wherein the bead bottom fixing step, A bead spreading step of spreading the activated carbon beads on an upper surface of the second layer to which the adhesive is applied; Compressing the activated carbon beads by pressing an upper surface of the second layer sprayed with the activated carbon beads; An adhesive curing step of curing the adhesive applied to the second layer to fix a lower end of the activated carbon bead to the second layer; And Vibrating the second layer or providing a vacuum pressure to the upper surface of the second layer to remove the unattached beads to remove the activated carbon beads not attached to the adhesive from the second layer; Method for manufacturing filter rised fabric. Special clothing for the protection of toxic substances produced by the manufacturing method of any one of claims 12 to 19.

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