[go: up one dir, main page]

WO2021206348A1 - Tissu non tissé composite pour filtre à air, et article le comprenant - Google Patents

Tissu non tissé composite pour filtre à air, et article le comprenant Download PDF

Info

Publication number
WO2021206348A1
WO2021206348A1 PCT/KR2021/003921 KR2021003921W WO2021206348A1 WO 2021206348 A1 WO2021206348 A1 WO 2021206348A1 KR 2021003921 W KR2021003921 W KR 2021003921W WO 2021206348 A1 WO2021206348 A1 WO 2021206348A1
Authority
WO
WIPO (PCT)
Prior art keywords
nonwoven fabric
layer
spunbond
melt
fabric layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2021/003921
Other languages
English (en)
Korean (ko)
Inventor
조경제
김대희
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Advanced Materials Korea Inc
Original Assignee
Toray Advanced Materials Korea Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020210034235A external-priority patent/KR102584560B1/ko
Application filed by Toray Advanced Materials Korea Inc filed Critical Toray Advanced Materials Korea Inc
Publication of WO2021206348A1 publication Critical patent/WO2021206348A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments

Definitions

  • Composite nonwoven fabrics and articles comprising the same are disclosed. More particularly, a composite nonwoven fabric for an air filter, and an article including the same are disclosed.
  • the conventional air filter is composed of a double structure of an electrostatic melt blown nonwoven fabric layer serving as a main filter and a support layer for reinforcing the same.
  • the melt blown nonwoven fabric and the spunbond or short fiber nonwoven fabric used as the support are respectively manufactured and laminated in a separate process, and a hot-melt adhesive is used for laminating them.
  • a hot melt adhesive is used, fumes are generated during the process, causing odor, adversely affecting the health of workers, and ultimately increasing the differential pressure of the filter media produced.
  • melt blown nonwoven fabric which serves as the main filter, it has low durability and low shape stability, so it is easy to detach or damage if the melt blown fabric is exposed to the outside and comes in contact with or scratched by other objects during the manufacturing process and use. It can be a problem if you use it.
  • One embodiment of the present invention provides a composite nonwoven fabric for an air filter.
  • Another aspect of the present invention provides an article comprising the composite nonwoven fabric for an air filter.
  • One aspect of the present invention is
  • the melt blown nonwoven layer is at least partially charged
  • the filament fineness of the second spunbond nonwoven layer is greater than the filament fineness of the first spunbond nonwoven layer
  • the ratio of the filament fineness of the first spunbond nonwoven fabric layer to the filament fineness of the melt blown nonwoven fabric layer is 40-100
  • the ratio of the filament fineness of the second spunbond nonwoven fabric layer to the filament fineness of the melt blown nonwoven fabric layer is 225 to 700 to provide a composite nonwoven fabric for an air filter.
  • the filament fineness of the first spunbond nonwoven layer is 1 to 5 denier
  • the filament fineness of the melt blown nonwoven layer is 0.01 to 0.16 denier
  • the filament fineness of the second spunbond nonwoven layer may be 3 to 20 denier. have.
  • the basis weight of the first spunbond nonwoven layer is 10 to 40 g/m 2
  • the basis weight of the melt blown nonwoven layer is 15 to 50 g/m 2
  • the basis weight of the second spunbond nonwoven layer is 30 to It may be 100 g/m 2 .
  • the composite nonwoven fabric for the air filter may include the first spunbond nonwoven fabric layer, the melt blown nonwoven fabric layer, and the second spunbonded nonwoven fabric layer in this order.
  • the first spunbond nonwoven fabric layer and the second spunbond nonwoven fabric layer may each include a plurality of spunbond nonwoven fabric sublayers.
  • the melt-blown non-woven fabric layer may further include at least one non-electrostatically-treated melt-blown non-woven fabric sub-layer in addition to the at least one electrostatically treated melt-blown non-woven fabric sub-layer.
  • the composite nonwoven fabric for an air filter may further include at least one additional layer.
  • the composite nonwoven fabric for an air filter may not contain any adhesive including a hot melt adhesive.
  • Another aspect of the present invention is
  • the article may be a media for an air filter, an air filter or an air purifier.
  • the composite nonwoven fabric according to an embodiment of the present invention is manufactured in a single continuous process and does not separately use an adhesive such as a hot melt adhesive, so there is no fumes in the field, so it is environmentally friendly, can lower the filter differential pressure, and melt blown Since a separate spunbond layer serving as a pretreatment and a cover is combined on the nonwoven fabric layer, shape stability and durability are excellent, and the differential pressure is low.
  • an adhesive such as a hot melt adhesive
  • the composite nonwoven fabric for an air filter may be used for the purpose of removing various kinds of dust, fine dust, bacteria, and the like, and may be applied to various air filters.
  • FIG. 1 is a view schematically showing a composite nonwoven fabric for an air filter according to an embodiment of the present invention.
  • FIG. 2 is a view schematically showing an apparatus for manufacturing a composite nonwoven used to continuously manufacture a composite nonwoven according to an embodiment of the present invention.
  • non-woven fabric composite is not a non-woven fabric laminate manufactured through a separate lamination (lamination) post-process after two or more kinds of non-woven fabrics are individually prepared, but two or more kinds of non-woven fabrics are one It means a nonwoven fabric that is manufactured in a continuous process in each device and integrated with each other. Therefore, in this specification, “composite non-woven fabric” may also be referred to as “monolithic non-woven fabric”.
  • the composite nonwoven fabric for an air filter has a strong interlayer bonding, and excellent shape stability and filtration performance compared to the nonwoven fabric laminate.
  • the "electrostatically treated melt blown nonwoven fabric layer” or “electrostatically treated melt blown nonwoven fabric sublayer” may be manufactured by a continuous process.
  • the "electrostatically-treated melt-blown non-woven fabric layer” or “pre-charged melt-blown non-woven fabric sub-layer” is manufactured by sequentially or simultaneously performing "preparation of melt-blown non-woven fabric” and "electro-treatment” in a continuous process. it may have been
  • charged means a state in which electric charges are semi-permanently applied to the non-woven fabric fibers to form an electrostatic field between adjacent fibers, and the charged non-woven fabric has a charge compared to the non-electrostatically-treated non-woven fabric. It has high density and fine dust removal efficiency.
  • the composite nonwoven fabric for an air filter includes a first spunbonded nonwoven fabric layer, a meltblown nonwoven fabric layer, and a second spunbonded nonwoven fabric layer.
  • the composite nonwoven fabric for an air filter includes a first spunbond nonwoven fabric layer, a meltblown nonwoven fabric layer, and a second spunbond nonwoven fabric layer, each of which is manufactured by a continuous process in one device and integrated with each other.
  • the melt blown nonwoven layer is at least partially charged.
  • the composite nonwoven fabric for an air filter includes at least a partially charged melt blown nonwoven fabric layer, and thus has a fine particle collecting function.
  • the conventional spunbond-meltblown multilayer nonwoven fabric has an average pore size of several to several tens of micrometers ( ⁇ m), there is little function of removing fine particles of 0.1 to 0.6 ⁇ m level.
  • the filament fineness of the second spunbond nonwoven fabric layer is greater than the filament fineness of the first spunbond nonwoven fabric layer.
  • the filament fineness of the first spunbond nonwoven layer may be 1 to 5 denier, and the filament fineness of the second spunbond nonwoven layer may be 3 to 20 denier.
  • the filament fineness of the melt blown nonwoven fabric layer may be 0.01 ⁇ 0.16 denier.
  • the ratio of the filament fineness of the first spunbond nonwoven fabric layer to the filament fineness of the melt blown nonwoven fabric layer is 40-100. If the ratio of the filament fineness of the first spunbond nonwoven fabric layer to the filament fineness of the melt blown nonwoven fabric layer is less than 40, the differential pressure of the filter itself increases, and when it exceeds 100, the performance as a pretreatment filter is insignificant, so filtration efficiency and collection amount does not have a significant effect on the
  • the ratio of the filament fineness of the second spunbond nonwoven fabric layer to the filament fineness of the melt blown nonwoven fabric layer is 225 to 700.
  • the ratio of the filament fineness of the second spunbond nonwoven fabric layer to the filament fineness of the melt blown nonwoven fabric layer is less than 225, the differential pressure of the filter itself increases, and when it exceeds 700, spinning in a continuous process is difficult as well as filter media The thickness of the filter is increased too much, so workability deteriorates when working with the finished filter product, and the stability and lifespan of the finished filter product are reduced.
  • the basis weight of the first spunbond nonwoven fabric layer may be 10 to 40 g/m 2 . If the basis weight of the first spunbond nonwoven fabric layer is within the above range, the filter performance can be improved by faithfully performing a role as a pre-treatment filter, and the thickness of the filter material is suitable to have excellent bendability when bending the filter material is increased, the dust filtration amount of the finished product is increased, and effects such as lowering of the differential pressure can be obtained.
  • the basis weight of the second spunbond nonwoven fabric layer may be 30-100 g/m 2 .
  • the shape stability of the filter media is excellent, and the thickness of the filter media is appropriate so that the bendability is excellent when bending the filter media, and the acid number of the filter media is increased to filter the dust of the finished product.
  • the amount increases, and effects such as lowering of the differential pressure can be obtained.
  • the basis weight of the melt blown nonwoven fabric layer may be 15 ⁇ 50g / m 2 .
  • the filtration efficiency is excellent and the differential pressure is low, so that it is suitable for use in an air filter.
  • the composite nonwoven fabric for the air filter may include the first spunbond nonwoven fabric layer, the melt blown nonwoven fabric layer, and the second spunbonded nonwoven fabric layer in this order.
  • the present invention is not limited thereto, and the composite nonwoven fabric for an air filter may include the first spunbond nonwoven fabric layer, the melt blown nonwoven fabric layer, and the second spunbonded nonwoven fabric layer in a different order.
  • the first spunbond nonwoven fabric layer and the second spunbond nonwoven fabric layer may each include a plurality of spunbond nonwoven fabric sublayers.
  • the first spunbond nonwoven fabric layer and the second spunbond nonwoven fabric layer may each include a plurality of spunbond nonwoven fabric sub-layers that are each manufactured in a continuous process in one device and integrated with each other.
  • the melt-blown non-woven fabric layer may include at least one pre-treated melt-blown non-woven sub-layer.
  • the melt-blown non-woven fabric layer includes only one electrostatically treated melt-blown non-woven fabric sub-layer, or a plurality of electro-treated melt-blown non-woven non-woven sub-layers each manufactured in a continuous process in one device and integrated with each other. may include.
  • the melt-blown non-woven fabric layer may further include at least one non-electrostatically-treated melt-blown non-woven fabric sub-layer in addition to the at least one electrostatically treated melt-blown non-woven fabric sub-layer.
  • the melt-blown non-woven fabric layer includes at least one uncharged melt-blown non-woven fabric sub-layer in addition to at least one pre-charged melt-blown non-woven fabric sub-layer, or each of the melt-blown non-woven fabric sub-layers in one device is manufactured in a continuous process. It may further include a plurality of non-electrostatically treated meltblown nonwoven sub-layers integrated with each other.
  • At least one spunbond nonwoven fabric, at least one electrostatically treated meltblown nonwoven fabric and/or at least one uncharged meltblown nonwoven fabric included in the composite nonwoven fabric for an air filter each independently comprises a non-conductive polymer can do.
  • the non-conductive polymer may include polyolefin, polystyrene, polycarbonate, polyester, polyamide, a copolymer thereof, or a combination thereof.
  • the polyolefin may include polyethylene, polypropylene, poly-4-methyl-1-pentene, polyvinyl chloride, or a combination thereof.
  • the polyester may include polyethylene terephthalate, polylactic acid, or a combination thereof.
  • Each of the spunbond nonwoven fabrics, each of the electrostatically treated meltblown nonwoven fabrics and/or each of the uncharged meltblown nonwoven fabrics may each independently include an additive.
  • the additives include pigments, light stabilizers, primary antioxidants, secondary antioxidants, metal deactivators, hindered amines, hindered phenols, fatty acid metal salts, triester phosphites, phosphates, fluorine-containing compounds, nucleants or these may include a combination of
  • the antioxidant may function as a charge enhancer.
  • charge enhancers include thermally stable organic triazine compounds, oligomers or combinations thereof, wherein these compounds or oligomers further contain at least one nitrogen atom in addition to the nitrogen in the triazine ring.
  • charge increasing agents for improving charging characteristics are disclosed in US Patent Nos. 6,268,495, 5,976,208, 5,968,635, 5,919,847, and 5,908,598.
  • the charge increasing agent may include a hindered amine-based additive, a triazine additive, or a combination thereof.
  • the charge increasing agent is poly[((6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazine-2,4-diyl)((2, 2,6,6-tetramethyl-4-piperidyl)imino)hexamethylene ((2,2,6,6-tetramethyl-4-piperidyl)imino)] (manufactured by BASF, CHIMASSORB 944) 1,6-hexanediamine-N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl with (2,4,6-trichloro-1,3,5-triazine) )-polymer, N-butyl-1-butanamine, reaction product with N-butyl-2,2,6,6-tetramethyl-4-piperidinamine) (manufactured by BASF, CHIMASSORB 2020) or a combination thereof may include.
  • the charge increasing agent is an N-substituted amino aromatic compound, in particular a tri-amino substituted compound such as 2,4,6-trianilino-p-(carbo-2′-ethylhexyl-1′-oxy)- 1,3,5-triazine (manufactured by BASF, UVINUL T-150) may be used.
  • Another charge enhancer is 2,4,6-tris-(octadecylamino)-triazine, also known as tristearyl melamine (“TSM”).
  • the content of the charge increasing agent may be 0.25 to 5 parts by weight based on 100 parts by weight of the total weight of each electrostatically treated melt blown nonwoven fabric. If the content of the charge increasing agent is within the above range, it is possible to obtain a high level of charging performance targeted by the present invention, as well as good spinnability, high strength of the nonwoven fabric, and advantageous in terms of cost.
  • the composite nonwoven fabric for an air filter may further include generally known additives such as a heat stabilizer and a weathering agent in addition to the additives.
  • the total content of the electrostatically treated melt blown nonwoven fabric in the composite nonwoven fabric for an air filter may be 3 to 50 parts by weight based on 100 parts by weight of the total weight of the composite nonwoven fabric for an air filter.
  • a composite nonwoven fabric having excellent filtration performance, shape stability and durability may be obtained.
  • the composite nonwoven fabric for the air filter may have a basis weight (mass per unit area) of 10 to 500 g/m 2 , for example, 20 to 100 g/m 2 .
  • a plurality of nonwoven fabrics included in the composite nonwoven fabric for an air filter may be integrated (ie, bonded) to each other by thermal fusion rather than ultrasonic fusion.
  • the composite nonwoven fabric for an air filter may further include at least one additional layer.
  • each of the additional layers may include at least one separate nonwoven fabric that is neither a spunbond nonwoven fabric nor a meltblown nonwoven fabric.
  • each of the additional layers may include one or more layers made of a material other than the non-woven fabric.
  • the composite nonwoven fabric for an air filter may not contain any adhesive including a hot melt adhesive.
  • the composite nonwoven fabric for an air filter is (i) the ratio of the filament fineness of the first spunbond nonwoven fabric layer to the filament fineness of the melt blown nonwoven fabric layer, (ii) The ratio of the filament fineness of the second spunbonded nonwoven fabric layer to the filament fineness of the meltblown nonwoven fabric layer, (iii) the filament fineness of the first spunbonded nonwoven fabric layer, (iv) the filaments of the second spunbonded nonwoven fabric layer having a particular combination of fineness, (v) basis weight of said first spunbonded nonwoven layer, (vi) basis weight of said meltblown nonwoven layer, and (vii) basis weight of said second spunbonded nonwoven layer;
  • the strength, stiffness, air permeability, shape stability, bendability and filtration efficiency are high, the collection amount is large, and the filter differential pressure can obtain an appropriate effect.
  • the method for manufacturing a composite nonwoven fabric for an air filter includes the steps of continuously forming a spunbonded nonwoven layer (S10) and continuously forming a melt blown nonwoven layer on the spunbonded nonwoven layer (S20) ) is included.
  • the continuous forming step (S10) of the spunbond non-woven fabric layer is to melt extruded, cooled and stretched a thermoplastic non-conductive polymer to form a fiber yarn, and then laminated the fiber yarn on a screen belt to form a web (web forming).
  • the continuous forming step (S20) of the melt-blown non-woven fabric layer is performed by melt-extruding, hot-air stretching and cooling a thermoplastic non-conductive polymer (additional charging performance enhancer) to form a fiber yarn, and then forming the fiber yarn into the spunbond non-woven fabric layer.
  • a thermoplastic non-conductive polymer additional charging performance enhancer
  • it may be laminated on the web-formed spunbond to form a web.
  • the continuous formation of the melt blown nonwoven layer (S20) includes the steps of continuously forming free fibers with a non-conductive polymer (S20-1), continuously spinning the free fibers (S20-2), and Continuously spraying a polar solvent (for example, water) onto the free fibers to continuously charge the free fibers (S20-3) and continuously integrating the free fibers to continuously form a melt-blown nonwoven fabric (S20-4) may be included.
  • a polar solvent for example, water
  • the free fiber continuous charging step (S20-3) may be performed by continuously spraying the polar solvent together with a gas (eg, air).
  • a gas eg, air
  • the free fiber continuous charging step (S20-3) has a heterogeneous or significant effect compared to the prior art.
  • U.S. Patent No. 5,227,172 discloses a method in which a high potential difference is applied between a melt blown die and a collector so that the melt-spun resin is filamentized and inductively charged by the surrounding electric field.
  • a melt-blown nonwoven fabric that has been electrostatically treated can be obtained without a separate post-processing treatment.
  • the non-woven fabric that has been inductively charged by the potential difference has a phenomenon that the charging efficiency is rapidly reduced depending on heat or the surrounding environment, it requires long-term storage in the sales process, such as a mask for removing fine dust, or with an air purifier filter. It has a disadvantage that it is difficult to apply it to a purpose where a long service life is guaranteed.
  • U.S. Patent No. 5,227,172 is incorporated herein by reference in its entirety.
  • the present inventors spray a polar solvent together with air on the melt-blown nonwoven fabric layer in the form of a two-fluid body, and friction the polar solvent particles with sufficient kinetic energy with a small injection amount to the filament being melt-spun to have a high-efficiency triboelectric effect.
  • a pretreatment device to do this, and this pretreatment device is characterized in that it does not require a separate drying facility because it is sufficiently heated and evaporated by the heated air within the DCD (Die to collector distance) section due to a small injection amount. Due to these characteristics, the pretreatment device has a feature that can compound the nonwoven fabric by continuous lamination in combination with the nonwoven fabric manufacturing process.
  • the nonwoven fabric obtained by electrostatically treating the melt blown nonwoven fabric is continuously polarized so that negative and positive charges exist semi-permanently, and this nonwoven fabric is referred to as an electret nonwoven fabric.
  • the method of manufacturing the composite nonwoven fabric for an air filter may not include a separate drying step for removing the polar solvent sprayed in the free fiber continuous charging step (S20-3).
  • the polar solvent continuously sprayed in the free fiber continuous charging step (S20-3) is continuously heated by heated air within the DCD (Die to collector distance) section of the composite nonwoven fabric manufacturing apparatus. may evaporate.
  • the method of manufacturing the composite nonwoven fabric for an air filter further includes a step (S30) of continuously forming another spunbonded nonwoven fabric layer on the melt blown nonwoven fabric layer in the same manner as the continuous forming step (S10) of the spunbonded nonwoven fabric layer can do.
  • the method for manufacturing the composite nonwoven fabric for an air filter is performed on one or both sides of the melt blown nonwoven fabric layer after the continuous forming step (S20) of the melt blown nonwoven fabric layer or the continuous forming step (S30) of the another spunbond nonwoven fabric layer.
  • the step (S40) of continuously thermocompression bonding each spunbond nonwoven fabric layer may be further included.
  • FIG. 1 is a view schematically showing a composite nonwoven fabric 10 for an air filter according to an embodiment of the present invention.
  • the composite nonwoven fabric 10 for an air filter includes a first spunbonded nonwoven fabric layer 11 , a melt blown nonwoven fabric layer 12 , and a second spunbonded nonwoven fabric layer 13 .
  • a composite nonwoven fabric having various structures and/or configurations may be manufactured.
  • Another aspect of the present invention provides an article comprising the composite nonwoven fabric for an air filter.
  • the article may be a media for an air filter, an air filter or an air purifier.
  • a composite nonwoven fabric was prepared in the following manner using the apparatus shown in FIG. 2 .
  • a polyethylene terephthalate (PET) resin having an intrinsic viscosity (IV) of 0.650 dl/g and a melting point (Tm) of 256°C and an intrinsic viscosity (IV) of 0.650 dl /g and a melting point (Tm) of 220 °C poly (ethylene terephthalate-co-isophthalate) (CoPET) resin spun to a fineness level of 2.4 denier
  • melt flow index for the production of the melt blown layer (M) A resin having a (MFR) of 1300 g/10 min was spun, but Chimassorb 944, a hindered amine light stabilizer, was added to the melt blown layer (M) at a ratio of 0.5 wt %, and the fineness was spun to a level of 0.025 denier, and the second spun For the manufacture of the bond
  • the pre-heat-bonded filaments were additionally heat-bonded using an embossing method after pre-heat bonding using hot air to prepare a composite nonwoven fabric by laminating in an SMS-based form having a total basis weight of 120 gsm.
  • the melt blown layer (M) contains Chimassorb 944, a hindered amine light stabilizer, in an amount of 0.5 wt %, and after being charged, it is laminated between the spunbond nonwoven layers (S1, S2), and a double melt blown layer
  • the basis weight of (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) was spun at a level of 1.3 denier
  • the fineness of the melt blown layer (M) was spun at a level of 0.032 denier
  • the fineness of the second spunbond layer (S2) was spun at a level of 14.7 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) was spun at the level of 2.5 denier
  • the fineness of the melt blown layer (M) was spun at the level of 0.025 denier
  • the fineness of the second spunbond layer (S2) was spun at the level of 11.5 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) was spun at a level of 3.0 denier
  • the fineness of the melt blown layer (M) was spun at a level of 0.040 denier
  • the fineness of the second spunbond layer (S2) was spun at a level of 9.0 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) was spun at a level of 1.9 denier
  • the fineness of the melt blown layer (M) was spun at a level of 0.020 denier
  • the fineness of the second spunbond layer (S2) was spun at a level of 14.0 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) was spun at a level of 0.8 denier
  • the fineness of the melt blown layer (M) was spun at a level of 0.025 denier
  • the fineness of the second spunbond layer (S2) was spun at a level of 11.5 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) is spun to a level of 1.4 denier
  • the fineness of the melt blown layer (M) is spun to a level of 0.012 denier
  • the fineness of the second spunbond layer (S2) is to a level of 5.5 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) was spun at a level of 3.8 denier
  • the fineness of the melt blown layer (M) was spun at a level of 0.04 denier
  • the fineness of the second spunbond layer (S2) was spun at a level of 8.0 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • the fineness of the first spunbond layer (S1) was spun at the level of 2.4 denier
  • the fineness of the melt blown layer (M) was spun at the level of 0.025 denier
  • the fineness of the second spunbond layer (S2) was spun at the level of 18.8 denier.
  • a composite nonwoven fabric was prepared in the same manner as in Example 1.
  • the basis weight of the entire SMS composite nonwoven fabric was 120 gsm
  • the basis weight of the melt blown layer (M) was 30 gsm.
  • Example comparative example One 2 3 4 5
  • One 2 3 4 S1/M 96 40 100 75 95 32 117 95 96 S2/M 460 459 460 225 700 460 458 200 752
  • Filter differential pressure and particle filtration efficiency Using TSI Model 8130A equipment, each filter fabric was measured three times by the EN 143 NaCl method, and the average value was recorded as the filter differential pressure and particle filtration efficiency.
  • filter fabric means a composite nonwoven fabric.
  • filter fabric means a composite nonwoven fabric.
  • Ring crush compressive strength measurement method According to the JIS P8126 method, under the condition of a test speed of 10mpm, a sample with a size of 15cm x 3cm is made into a ring shape with an inner diameter of 4.5cm, and the part where the sheets overlap is fixed with a stapler, followed by a compressive strength test The load value taken when pressing the ring-shaped sheet was measured and recorded as the ring crush compressive strength.
  • Example comparative example One 2 3 4 5 One 2 3 4 filter differential pressure (mmH 2 O) 13.56 14.13 13.33 13.31 14.87 16.21 17.56 15.25 13.22 Dimensional change rate of filter fabric (%) less than 0.5 less than 0.5 less than 0.5 less than 0.5 less than 0.5 less than 0.5 less than 0.5 2.40 Particle Filtration Efficiency (%) 99.63 99.41 99.62 99.59 99.41 99.51 99.61 99.34 99.48 MD tensile strength (kgf/5cm) 30 31 30 30 31 31 31 28 26 Ring crush compressive strength (N) 15 16 16 14 17 14 9 12 16
  • the composite nonwoven fabric prepared in Examples 1 to 5 has a low filter differential pressure of less than 15 mmH 2 O, a dimensional change rate of the filter fabric is also low as less than 0.5%, and particle filtration efficiency is high as 99% or more.
  • MD tensile strength was high as 30kgf/5cm or more
  • ring crush compressive strength was also high as 14N or more.
  • the composite nonwoven fabric prepared in Comparative Example 1 has a low dimensional change rate of less than 0.5%, a high particle filtration efficiency of 99% or more, a high MD tensile strength of 30kgf/5cm or more, and a ring crush compressive strength of 14N. Although higher than that, the filter differential pressure was found to be high in excess of 15 mmH 2 O.
  • the composite nonwoven fabric prepared in Comparative Example 2 had a low dimensional change rate of less than 0.5%, a high particle filtration efficiency of 99% or more, and a high MD tensile strength of 30kgf/5cm or more, but the filter differential pressure was 15mmH 2 O It was found that the compressive strength of ring crush was as low as less than 14N.
  • the composite nonwoven fabric prepared in Comparative Example 3 had a low dimensional change rate of less than 0.5% and a high particle filtration efficiency of 99% or more, but had a high filter differential pressure exceeding 15mmH 2 O, and had a MD tensile strength of 30 kgf / It was found to be as low as less than 5cm, and the ring crush compressive strength was also as low as less than 14N.
  • the composite nonwoven fabric prepared in Comparative Example 4 has a low filter differential pressure of less than 15mmH 2 O, a high particle filtration efficiency of 99% or more, and a high ring crush compressive strength of 14N or more, but the dimensional change rate of the filter fabric is 0.5%. It was found to be high, and the MD tensile strength was also low, less than 30kgf/5cm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un tissu non tissé composite pour un filtre à air, et un article le comprenant. Le tissu non-tissé composite de l'invention pour un filtre à air comprend : une première couche de tissu non-tissé filé-lié ; une couche de tissu non-tissé obtenu par fusion-soufflage ; et une seconde couche de tissu non-tissé filé-lié, la couche de tissu non-tissé de fusion-soufflage étant au moins partiellement chargée électriquement, la finesse de filament de la seconde couche de tissu non-tissé filé-lié est supérieure à la finesse de filament de la première couche de tissu non-tissé filé-lié, le rapport de la finesse de filament de la première couche de tissu non-tissé filé-lié à la finesse de filament de la couche de tissu non-tissé de fusion-soufflage est de 40 à 100, et le rapport de la finesse de filament de la seconde couche de tissu non-tissé filé-lié à la finesse de filament de la couche de tissu non-tissé de fusion-soufflage est de 225 à 700.
PCT/KR2021/003921 2020-04-09 2021-03-30 Tissu non tissé composite pour filtre à air, et article le comprenant Ceased WO2021206348A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2020-0043519 2020-04-09
KR20200043519 2020-04-09
KR1020210034235A KR102584560B1 (ko) 2020-04-09 2021-03-16 공기 필터용 복합 부직포 및 이를 포함하는 물품
KR10-2021-0034235 2021-03-16

Publications (1)

Publication Number Publication Date
WO2021206348A1 true WO2021206348A1 (fr) 2021-10-14

Family

ID=78023845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2021/003921 Ceased WO2021206348A1 (fr) 2020-04-09 2021-03-30 Tissu non tissé composite pour filtre à air, et article le comprenant

Country Status (1)

Country Link
WO (1) WO2021206348A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5306534A (en) * 1991-03-22 1994-04-26 Home Care Industries, Inc. Vacuum cleaner bag with electrostatically charged meltblown layer
JP2002316010A (ja) * 2001-04-20 2002-10-29 Japan Vilene Co Ltd 帯電フィルタ及びそれを用いたマスク
US20040127132A1 (en) * 2002-10-23 2004-07-01 Bba Nonwovens Simpsonville, Inc. Nonwoven protective fabrics with conductive fiber layer
US20140272261A1 (en) * 2013-03-15 2014-09-18 Fibertex Personal Care A/S Nonwoven substrates having fibrils
KR20190128647A (ko) * 2017-03-24 2019-11-18 니혼 바이린 가부시키가이샤 대전 여재 및 대전 여재의 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5306534A (en) * 1991-03-22 1994-04-26 Home Care Industries, Inc. Vacuum cleaner bag with electrostatically charged meltblown layer
JP2002316010A (ja) * 2001-04-20 2002-10-29 Japan Vilene Co Ltd 帯電フィルタ及びそれを用いたマスク
US20040127132A1 (en) * 2002-10-23 2004-07-01 Bba Nonwovens Simpsonville, Inc. Nonwoven protective fabrics with conductive fiber layer
US20140272261A1 (en) * 2013-03-15 2014-09-18 Fibertex Personal Care A/S Nonwoven substrates having fibrils
KR20190128647A (ko) * 2017-03-24 2019-11-18 니혼 바이린 가부시키가이샤 대전 여재 및 대전 여재의 제조 방법

Similar Documents

Publication Publication Date Title
EP2609238B1 (fr) Bande de non-tissé et fibres présentant de propriétés d'électret, leurs procédés de fabrication et leur utilisation
WO2012002754A2 (fr) Couche filtrante destinée à un filtre de liquide utilisant un voile de nanofibres électrofilées, procédé de fabrication de celle-ci et filtre de liquide utilisant celle-ci
WO2022145604A1 (fr) Module de filtrage de poussière fine lavable utilisant des nanofibres
WO2021194248A1 (fr) Tissu non-tissé composite et article le comprenant
WO2024143803A1 (fr) Milieu de filtration composite biodégradable pour filtre à air, et son procédé de fabrication
WO2021206348A1 (fr) Tissu non tissé composite pour filtre à air, et article le comprenant
WO2018110965A1 (fr) Milieu filtrant, son procédé de fabrication et unité de filtre l'intégrant
WO2021206312A1 (fr) Tissu non tissé composite et article le comprenant
KR102681870B1 (ko) 복합 부직포 및 이를 포함하는 물품
WO2021206349A1 (fr) Non-tissé composite et article le comprenant
WO2021206358A1 (fr) Tissu non-tissé composite et article le comprenant
KR102571796B1 (ko) 복합 부직포 및 이를 포함하는 물품
KR102571795B1 (ko) 피부 자극이 적은 복합 부직포, 및 이를 포함하는 물품
WO2022191398A1 (fr) Procédé de préparation d'un mélange maître d'insecticide pour un textile non-tissé, mélange maître d'insecticide pour textile non-tissé, textile non-tissé, et article
WO2021194189A1 (fr) Procédé de fabrication d'un tissu non-tissé composite, tissu non-tissé composite, et article
KR102584560B1 (ko) 공기 필터용 복합 부직포 및 이를 포함하는 물품
KR102576247B1 (ko) 복합 부직포의 제조방법, 복합 부직포 및 물품
WO2021206359A1 (fr) Tissu non-tissé écologique, tissu non-tissé composite et article le comprenant
WO2013066022A1 (fr) Film de nanofibres stratifiés et procédés pour sa production et composite de nanofibres les utilisant
WO2021206313A1 (fr) Tissu non-tissé composite et produit le comprenant
KR20210125906A (ko) 복합 부직포 및 물품
KR102642485B1 (ko) 친환경 부직포, 복합 부직포 및 이를 포함하는 물품
WO2024143868A1 (fr) Tissu non-tissé filé-lié pour filtre, et son procédé de préparation
KR102576246B1 (ko) 복합 부직포 및 이를 포함하는 물품
WO2023090914A1 (fr) Non-tissé composite et article

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21783714

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21783714

Country of ref document: EP

Kind code of ref document: A1