KR20060031909A - Manufacturing method of laminated coated fiber bonded single layer or multilayer molded film by sandwich - Google Patents

Abstract

The present invention provides a first component (fiber fabric) winding roll (1) wound around the first component, which is any one selected from polyester fibers, nylon fibers or general fiber fabrics, and a resin that is a second component To prepare a second component (film) winding roll (3) wound around a single layer film produced using a single layer blown film extruder or a flat film extruder, and then the first component (fiber fabric) winding roll (1) And withdrawing each component wound in the second constituent (film) winding roll 3 on which the second constituent is wound, through the guide roll 5 to the lamination roll 6, and then the first constituent Thermoplastic resin alone or thermoplastic resin and thermoplastic elise with an extrusion coating adhesive (sandwich resin) in the Ti die 2 located at the center of the two lamination rolls 6 as a sandwich layer for bonding and laminating the second component. While extruding the tomer or rubber into the mixed ingredients, The single-layered or multi-layered film in which the first and second components are laminated and coated with the laminated film is guided by the guide roll 5 and wound on the laminated coated fiber winding roll 4 to bond the single layer film to the sandwich. The present invention relates to a method for producing laminated coated fibers bonded by sandwiches.

Method of manufacturing film-laminated coating fibers. Bonding multi-layered film.

Description

Preparation Method of Laminated Cloth With Fabricated Mono- or Multi-Layer Film by Sandwich Processing}

1 is a manufacturing process detailed view of the present invention;

Figure 2 is a photograph taken the layer configuration of the laminated coating fiber of the present invention

(A) single layer, (B) multiple layers

Figure 3 is a mechanical characteristic chart of the laminated coating fiber of the present invention

Explanation of symbols in the drawings

1st component (fiber fabric) winding roll (1), Ti die (2), 2nd component (film) winding roll (3), laminated film fiber winding roll (4), guide roll (5), lamination roll (6)

The present invention relates to a method for producing laminated coated fibers in which a single layer or multilayer molded film is bonded to a sandwich, and is used as a main raw material for shoes, clothing, bags, general goods and other industrial uses, and is used for natural fibers or synthetic fibers. Single layer or multi-layered film laminated with economical and environmentally friendly thermoplastic resin that has excellent adhesion, resilience and flexibility, easy to adjust thickness, and the fiber surface is not contaminated with resin, so that the unique beauty and touch of fiber can be preserved. The present invention relates to a method for producing laminated coated fiber bonded to a sandwich.

Currently, in order to supplement the mechanical properties and thickness of the fiber, and to impart waterproofness, natural rubber, synthetic rubber, or PVC is used alone or mixed to melt the fiber fabric and directly join the fiber fabric.

However, in the process of using a calendar, it is very difficult to reduce the bonding thickness to 70 µm or less since the initial equipment cost is very expensive because the expensive large-capacity calendar is essential, and the interval between calendar rolls cannot be lowered below a certain limit. The thickness smoothness has a very bad disadvantage. In addition, when the thickness is 1 mm or more, economical remarkably decreases because calendering is required on the coated fiber once bonded.

In addition to using a calender, PVC is most commonly used as an economical material as well as adjusting flexibility according to the amount of plasticizer when the film is coated by a knife coating method using a sol PVC paste. However, despite the above-mentioned advantages, PVC is known to release dioxins known as carcinogens that are fatal to humans when incinerated, and are limited in use at home and abroad.

In addition, the rubber may not cause environmental problems such as dioxin release depending on the material selected, but due to the chemical structure and melting characteristics of the material itself, there is a limitation in the film processing except calender processing, which is not widely used. There is this.

In order to improve the above problems, Korean Patent Laid-Open Publication No. 2001-0044828 discloses an ethylene-alpha-olefin copolymer resin, which can be represented by linear low density polyethylene or metallocene polyethylene, and a low density polyethylene and ethylene-vinyl acetate copolymer (hereinafter referred to as EVA). A process of coating and coating the resin from the T-Die directly onto the fiber while extruding a mixture of polyolefin-based thermoplastic resins such as Compared to the existing calendar process, this method can use a relatively wide variety of thermoplastic resins. The width of the film can be freely adjusted by setting the width of the tee die, and the process is simple, so it is very economically valuable. In order to improve the dispersibility of the resin during extrusion, the resin of the corresponding composition may be kneaded and granulated in a twin screw extruder in advance, or mixed in a batch kneader such as a kneader and then twin screw extruder. B. Because of granulation with single screw extruder, the process is complicated and the economics are very weak.

First, a resin having a characteristic that can be processed in a tee-die is generally RCH = CH ₂ (where R is an alkyl group having 1 to 8 carbon atoms or hydrogen or a derivative thereof and a monomer containing oxygen or nitrogen as a functional group). Polyolefin-based resins or copolymers obtained by homopolymerizing an alpha olefin monomer represented by the above formula or obtained by two or more kinds of monomers having different components in the general formula RCH = CH ₂ , or RCH = CH ₂ and α, β-unsaturation. Carboxylic acid esters or unsaturated carboxylic acid resins or RCH = CH ₂ and Due to the use of vinyl acetate, only some resins polymerized in high pressure processes can not be used to extrude rubber or thermoplastic rubbers or thermoplastic elastomers, which are essential for the production of coated fibers for applications requiring flexibility and elasticity. There is.

That is, rubber or thermoplastic elastomers that can give elasticity and restoring force are generally too high in melt viscosity when subjected to extrusion coating at the recommended processing temperature of the product. In addition, the processing temperature is increased to form a stable coating film, if the viscosity is lowered, long-term processing is impossible due to deterioration of the rubber component.

Therefore, there is a limit to the material that can be extruded coating process, there is a limit to the production of coated fibers having a variety of uses and functions.

Secondly, in extrusion coating processing, the resin is bonded to or bonded to the fiber only by the pressure between the cooling roll and the pressing roll, mainly based on the viscosity of the resin coming out of the tee die at a high temperature extrusion of about 300 ° C. or higher. Not only does it lose its original function, but it also contaminates the fiber surface and contaminates the fiber surface by the pressing force of the presser foot of the sewing machine during sewing. If the pressure is too low, the adhesive strength of the extruded coating resin and the fabric will be reduced and the original function of the coated fiber as a composite material will be lost. Therefore, proper processing conditions and resin can be selected. The width is very difficult and there is a narrow technical problem.

Therefore, J.P.Kokai No. of Japan 57-200438 and Japanese Patent Laid-Open No. 59-27968, Digestion No. 62-149734, Pyung Hwa 4-132783 improve adhesion problems with polyolefin resins substituted with halogen or chlorine, copolymers of acrylic monomers and polydienes substituted with chlorine, etc. Or there is a solution to solve, but due to the economic problem of using expensive resins and the phase separation phenomenon due to compatibility problems with the resins used in mixing with each other, the resins are poorly dispersed between the mixed resins, it is difficult to properly extrude coating In addition, since a halogen compound containing a chlorine-based element is included, there is a disadvantage that is not practical because it can cause environmental problems as well as limitations on the use. In addition, the processing temperature is too high, there is a large energy consumption problem.

Third, even if the proper resin and proper processing conditions are established according to the resin selection, the resin is infiltrated into the fiber structure and the fiber structure layer between the fiber and fiber layer while the hot resin is coated on the fiber surface. There is a problem that the thickness of the coated fiber is smaller than the original thickness of the fiber compared to the extrusion amount of the resin coming out of the die, thereby reducing the feel of the fiber, greatly reducing the product value of the coated fiber itself, reducing the restoring force and forming after sewing or post-processing. There is a technical problem that wrinkles and wrinkles generated at the time remain intact, so that the merchandise of the molded product is also a problem.

Therefore, as the overall thickness due to the thickness reduction of the fiber must be supplemented with a large amount of resin, a large amount of resin must be used more than necessary, resulting in economical loss and a loss of about 100 times the original thickness of the fiber. It is very difficult to have a coating thickness of more than 탆, and products that prefer thick products are difficult to produce, causing economic and technical inefficiencies.

Fourth, the coated fiber produced by such a high temperature and extruded coating is the resin from the T-die is instantaneously cooled and solidified between the cooling roll and the compression roll, causing the shrinkage of the resin and the coated fiber is extruded coating Curling in the direction is severe. The curl phenomenon is more severe when the processing temperature is higher, the higher the crystallinity resin, it is true that the generation of the curl is inevitable due to the high processing temperature in the conventional method. If the curl phenomenon is severe, workability is seriously deteriorated in the sewing process for processing the coated fiber.

In order to solve the above problems, the present invention is prepared by manufacturing a film having a single layer or a multi-layered layer in advance, by developing and manufacturing a process capable of manufacturing a multi-layered coated fiber bonded or bonded with a fiber fabric, natural rubber, By using materials with excellent elasticity such as thermoplastic rubber and synthetic rubber, it is possible to give elasticity and flexibility to the coated fiber as much as possible, and it is possible to precisely adjust thickness freely. It is possible to solve the problem and to produce a laminated coat fiber having almost no curling.

Accordingly, an object of the present invention is to provide a variety of properties and customized functions according to the use, easy to adjust the thickness, during use, in the production method of the laminated coating fiber which is free of any environmentally harmful substances such as dioxin during incineration. To provide technical information about

In order to achieve the above object, the present invention comprises a polyester fiber, nylon, or other fibers according to the use as a first component, the second component is a single layer or a multilayer film to impart a function suitable for the use or required characteristics The first component and the second component are manufactured by supplying to the extrusion coating apparatus by using an adhesive (sandwich resin) designed in advance according to the characteristics of each component to suit the adhesion function and the function of the coated fiber. The present invention relates to a method for producing laminated coated fibers obtained by sandwiching a single layer or multilayer molded film to be a sandwich.

As described above, the second component used in the single-layer or multi-layer film of the present invention is a shape of a die from which a resin or rubber component, which cannot be extruded generally due to chemical structure or flow characteristics, is extruded from a general extruder. As a result, since it can be made into a flat film or a blown film, a wide variety of resins and rubbers can be used alone or in combination, and various functions and properties can be imparted. The second constituent having a function as an inner layer of the coated fiber can be variously prescribed in various additives according to the use thereof to improve the function.

In other words, it is possible to prolong the product life by prescribing weatherproofing agent for the use which is exposed to the sunlight, and to sew it by prescribing slip agent for the use that needs sewing, and melting point for the application requiring heat sealing. Low resin or low molecular weight materials can be prescribed, and antistatic agents can be prescribed to prevent static electricity. However, these additives are basically prescribed to some extent with the exception of additives with very special functions, so there is no problem in using the resin as it is, but more prescription is required by the function or use. Additives can be formulated in the required amount because the granulated masterbatch is commercialized. In addition, by using an appropriate amount of inorganic fillers such as barium sulfate, calcium carbonate and silica, it is possible to minimize economical and curl generation, and various coatings can be used to easily produce coated fibers with various colors to meet the needs of users and users. Can supply

The molten resin coming out of the tee-die of the extrusion coating machine of the present invention enters the middle part of the first component fiber and the second component single layer or multilayer film, and the flexibility of the coated fiber together with the sandwich adhesion by the adhesive between the two components. The choice of the appropriate adhesive (resin) is very important because it also plays an important role in providing resilience and resilience.

Therefore, the type of resin used for the adhesion may vary depending on the material of the film used as the second component, and the adhesive (adhesive resin) used for the adhesion of each component by sandwich processing acts as an intermediate layer, so that special additives Although no prescription is necessary, the present invention has been completed by adopting a resin and a process capable of mixing inorganic materials to improve economics and improving curling.

After all, the main object of the present invention is by a sandwich process that can be made by adhering a single layer or a multilayer film made of rubber or resin alone or mixed with a pre-predicted (designed) adhesive (adhesive resin) coming out of a tee die into an intermediate layer. It relates to a method for producing a laminated coated fiber that can impart various functions and properties according to the use.

Hereinafter, the present invention will be described in detail. According to the present invention, an elastomer, such as natural rubber, synthetic rubber, or thermoplastic rubber, is molded into a single layer or a multilayer film of a single or mixed component of a single or mixed component with a blown or flat film extruder, or a resin of the same kind as a film composition, or Attention is given to a technique of laminating the selected resin alone or in a mixture with a molten resin extruded from the tee-die of the extrusion coating machine to the fiber.

The technique according to the present invention eliminates the use of environmentally harmful materials and economic effects that can replace the use of large, expensive calender equipment, which is essential for bonding conventional thermoplastic elastomers or PVC to fibers, and thus incineration In addition to environmentally-friendly effects, it is possible to provide laminated film fibers that can give various functions to sandwich applications and single layer or multilayer film layers according to usage and market characteristics.

Resin or rubber using the second component in the present invention can be used in a wide variety.

That is, the second component used in the present invention is a general formula RCH = CH ₂ (where R is an alkyl group having 1 to 8 carbon atoms or a hydrogen or a derivative thereof and a monomer containing oxygen or nitrogen as a functional group) Copolymer of alpha olefin resin obtained by superposing | polymerizing the monomer which can represent, and an olefin, and a (alpha), (beta)-unsaturated carboxylic acid ester or (alpha), (beta)-unsaturated carboxylic acid, or a styrene-butadiene-styrene block copolymer (henceforth SBS) Styrene-isobutadiene-styrene block copolymer (hereinafter referred to as SIS), and styrene-ethylene-butadiene-styrene block copolymer (hereinafter referred to as SEBS) which is added with hydrogen to these SBS or SIS resins to avoid double bonds; styrene-iso-butadiene-styrene (hereinafter referred to as SIBS) copolymer or the RCH = CH ₂ which can be obtained by copolymerizing a monomer that can be described as a syndiotactic 1,2-polybutadiene rubber ( Components such as RB), ethylene-propylene rubber and ethylene-propylene-butadiene rubber are used alone or as a mixed component in a flat or blown process, and each component is used in each layer alone according to the required characteristics according to the application. Alternatively, or may be used in combination with each other, it is necessary to design a suitable layer structure depending on the application.

Among the resins represented by the above general chemical structural formulas, the ethylene-alpha-olefin copolymer resin, which can be represented by low density polyethylene, high density polyethylene or polypropylene, or linear low density polyethylene and metallocene polyethylene, has a density of 0.850 to 0.965 g / cm 3, and melts. When the index is measured by the method of ASTM D1238, 0.1 to 40 g / 10 minutes may be used, but considering the bubble stability during film processing, it is preferable to use 0.1 to 10 g / 10 minutes, and it is generally commercialized at home and abroad. It is a good idea to use products that are already in stock In general, polyolefin has low density, which improves the flexibility of the film, so it is applied to products such as sports bags, and when the density is high, the film feels hard. can do.

In addition, ethylene-ethyl acrylate resin (EEA), ethylene-ethyl acrylate resin (EAA), and ethylene-methacrylic are represented by copolymers of olefins with α, β-unsaturated carboxylic acid esters and α, β-unsaturated carboxylic acids. Acid resins (EMAA) resins and ionomers, which are metal element substitution resins of EAA and EMAA, are also very effective resins for providing flexibility.

In addition, YV resins are very flexible, but these copolymers have high density as the amount of comonomer polymerized with ethylene increases, and flexibility, transparency, and adhesion to fibers can be appropriate. By selecting a resin alone or by mixing to produce a single-layer film, or by designing a layer structure according to the function, it is possible to maximize the function of each resin.

In addition, thermoplastic elastomers such as RB, SBS, and SIS are made by mixing with a general thermoplastic resin in advance, and commercialized compounds, and ethylene-propylene rubber and ethylene-propylene obtained by copolymerizing a monomer represented by RCH = CH ₂ . Elastomers such as butadiene rubber are very difficult to extrude due to their flow characteristics.However, when forming a film by mixing with the above-mentioned thermoplastic resin, the film formability is good. have.

The thermoplastic elastomer that can be used in the present invention preferably uses a product having a melt index of about 0.5 to 20 g / 10 minutes under a measurement condition of 200 ° C. and 5 kg. It is preferable that M1 + 4) is 55-75.

The content of the thermoplastic elastomer or the synthetic rubber used as the second component in the present invention is preferably 50 parts by weight or less. If it is 50 parts by weight or more, the compatibility with the above-mentioned thermoplastic resin is poor, when forming the film, the bubble stability of the film deteriorates can be very difficult to form the film.

Thus, a single layer or a multilayer having a desired thickness may be used alone or by mixing with a rubber or other resin, which is pre-designed according to the application, or is transferred to a hopper of an extruder of a single layer or multilayer blown film forming machine or a flat film. Mold the film. In this case, the above-mentioned additives, inorganic fillers and pigments for imparting color may be appropriately mixed depending on the use. The additives to be mixed can be freely mixed in a desired amount without a separate work process because a master batch is commercialized by concentrating and granulating various additives.

As an example of the apparatus used in the present invention, the blown film forming machine is a three-layer extruder, which uses a three-layer extruder manufactured by Kilion, USA with a screw diameter of 30/45/30 mm and an L / D of 30: 1. Thus, single layer, two-layer, and three-layer films were prepared using various resins according to desired characteristics. However, even a mixture having the same resin or the same ratio of the composition of the composition can be produced a film having a different number of layers,

The flat film is 40/40 / 40mm screw diameter, 32: 1 L / D, and the die width is 500mm. Using a Korean three-layer flat film extruder, the flat plate with the same composition and composition as the blown film A film was prepared. The processing temperature of the film varies depending on the type of resin and the composition of the mixture, but is generally in the range of 130 to 230 ° C. When SBS or SIS products, which are polystyrene-based thermoplastic rubbers, are mixed, the rubber is processed at 190 ° C or higher. Since the double bond in the components acts as a crosslinking agent, the viscosity may increase sharply, and the gelling phenomenon may occur, which makes extrusion very difficult.

The extrusion coating adhesive (adhesive resin) that bonds the fiber and the second component, which is a single layer or a multilayer film, with a sandwich is a resin obtained from the monomer of the general formula (RCH = CH ₂ ) mentioned above and has a melt index of the resin based on ASTM D1238. You can use products with 5 ~ 400g / 10min.

If the melt index is too low, the flow of the resin is not good, and the processing temperature should be increased. In this case, the curl phenomenon appears severely. If the melt index is too high, the cold phenomenon can be prevented. It is preferable to use a product having a melt index of about 5 to 200 g / 10 minutes because it is difficult to set the proper processing temperature because it can be soaked out of the fiber. However, resins of different types or resins having different melt indices or thermoplastic elastomers may be mixed according to the required properties of the final product and the structure of the second component provided in the present invention.

However, when the thermoplastic resin and the rubber component are mixed, when the rubber component is 50 parts by weight or more, the extrusion amount is small due to the high melt viscosity of the rubber component during the extrusion coating process, and phase separation may occur, thereby causing problems in the bonding process. It is good to use at 50 parts by weight or less.

The extrusion amount of the adhesive (sandwich resin) extruded for sandwiching the first component and the second component is 30 g / m 2 or less because the adhesion of the first component to the fiber may be degraded. It is necessary to appropriately adjust the sandwich processing speed and the skew flow speed of the extruder so as to be the above. The purpose of manufacturing the coated fiber obtained by the technology of the present invention not only imparts additional functions such as waterproofness, resilience, and elasticity, which are not possessed by the fiber, but also significantly increases mechanical properties such as tensile strength and tear strength of the fiber. Since the mechanical properties required for the use of the coated fiber, there is an advantage that can be designed. However, the mechanical properties of the coated fiber vary depending on the type of fiber used, and even the same fiber, the mechanical properties of the fiber are greatly affected by the structure of the fiber, so the film or adhesive (sandwich resin) laminated in the sandwich The impact may be different.

In the present invention, an adhesive (sandwich resin or extrusion coating resin) used for bonding a film or sandwich used as a second component in the present invention is generally an extrusion coating of a film or resin, such as barium sulfate, calcium carbonate, talc, silica or clay. It is also preferable to use the inorganic filler used in the aspect of economical and imparting function.

In the case of a single layer film, however, the inorganic filler may be prescribed at about 50 parts by weight or less, and in the case of two or more layers, it may be prescribed evenly to each layer depending on the end use of the coated fiber, or may be selectively prescribed to an inner layer, a middle layer, or an outer layer. have. However, in order to improve dispersion in the second constituent used for forming a film or for sandwich processing, it is preferable to use a commercial product in which an inorganic filler having an average particle diameter of about 1.0 to 30 μm is prepared in a master batch in advance. Among inorganic fillers, barium sulfate has a high specific gravity (approximately about 4.3) and has less curl than other inorganic fillers, and has an advantage of improving touch feeling. However, when the amount of barium sulfate used is 60 parts by weight or more, the specific gravity is increased, and it is difficult to blow up the film during blown film forming, which is a process for making the second component, and the coating film formed from the tee-die during the sandwich processing. It is preferable to use 60 parts by weight or less because of the problem of breaking.

The second component (film) drawn out from the second component (film) winding roll (3) on which the second component (film) manufactured by molding in this manner is wound, and the first component (fiber) wound up Titanium with an adhesive (sandwich resin) installed on top of the two lamination rolls 6 while the fibers, which are the first constituents drawn from the take-up roll 1, are laminated on the two lamination rolls 6. Sandwich process by simultaneously bonding and cooling the adhesive between the first constituent fiber and the second constituent film through (2) and simultaneously bonding and cooling by squeezing two cooling rolls (6) cooling roll and rubber roll. It is possible to complete the production of laminated coating fibers by.

At this time, the extrusion coating machine used for sandwiching the first component fiber and the second component film is a single extrusion coating machine, a two-layer or three-layer coextrusion coating in which two or more resin layers come out from the T-die. In addition, a tandem extrusion coating machine capable of sandwiching two or more laminated films by placing two or more extrusion coating machines continuously may be used.

The single extrusion coating machine is low in installation cost and relatively easy to operate. However, since the single or premixed resin can be laminated by extrusion coating only one layer, it is possible to apply various resins bonded to fibers and single layer or multilayer film. There is a disadvantage that can not be. The coextruder can extrude and coat two or more layers of resins composed of the same component or resins of different components, depending on the number of extruders and the structure of the T-die. It is very efficient at giving functionality. Tandem extrusion coating machine or tandem coextrusion coating machine is a facility that can install extrusion coating work continuously by installing two or more extruder coating equipments. It has the disadvantage that the initial equipment cost is higher than single or coextrusion coating machine. Since it can be done more than once, it is a very efficient equipment for the production of very thick products or products with various layers.

Since such a device is well known in the art, a detailed description thereof will be omitted.

At this time, the fibers to be used are preheated before sandwiching or corona treatment can significantly reduce the residue on the surface of the fiber, which helps to improve adhesion. In addition, urethane or polyester adhesive may be applied to the surface of the fiber to increase the adhesive strength of the first component fiber before sandwich processing. However, when a low viscosity adhesive is used, the adhesive is soaked to the opposite side of the fiber to be sandwiched. Care must be taken in the selection of suitable adhesives, as these may cause serious problems in changing the color of the fibers.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the scope of the present invention is not limited to the following Examples.

Examples 1-16

Prepare a first component (fiber fabric) winding roll 1 in which any one fiber selected from polyester fibers having a thickness of about 350 μm, a nylon fabric having a thickness of about 200 μm, and a general fiber fabric is wound around the first component. And a second component (film) winding roll (3) on which a single layer film obtained by using a 40 mmφ single layer blown film extruder was prepared using the resin shown in Table 1 as the second component prepared in the first step. After the preparation, the low-density polystyrene (hereinafter referred to as 'LDPE1') having a melt index of 70, an ethyl acetate content of 33 wt%, and an ethylene-vinylacetate copolymer having a melt index of 25 were used to bond and laminate the first component and the second component. Tee embedded with adhesive (sand top dimension), which is a compound selected from resin (hereinafter referred to as 'EVA1') and adhesive resin with a melt index of 40 (manufactured by Japan TOSOH Corporation, hereinafter referred to as 'Melthene') After preparing the die 2, extrusion coating Each component wound on the first component (fiber fabric) winding roll 1 and the second component (film) winding roll 3 on which the second component is wound at a processing temperature is introduced into the guide roll 5. Take out through the paper roll (6) through, then the adhesive (sandwich resin) located in the upper of the two paper roll (6) embedded in the Ti die (2) temperature 180 ~ 220 ℃, screw rotation speed 120rpm, state The adhesive film was discharged and the coating thickness was 50 to 100 µm, and the coating speed was set to 30 m / min and 60 m / min. The laminated coating fiber obtained by sandwiching the single-layer molded film with a thickness of 200 to 350 μm of the thickness of the first component layer and 50 to 100 μm of the second component thickness wound up from the roll 4 and bonded to the single layer film by the sandwich Prepared.

The single-layer film as the second component is low density polyethylene (hereinafter referred to as 'LDPE2') having a melt index of 0.8;

Single layer film prepared using vinyl acetate content 15 wt%, ethylene-vinylacetate copolymer resin having a melt index of 1.4 (hereinafter referred to as 'EVA2') or SBS resin having a styrene content of 31.5 wt% in the resin (Kumho Petrochemical, Trade name KTR-201, hereafter designated 'SBS';

Ethylene-octene copolymer resin having a density of 0.87 and a melt index of 1 (Dupont-Dow Elastomer, trade name Engage 8100, hereinafter referred to as 'Engage');

Syndiotactic 1,2-polybutadiene resin having a density of 0.91 and a melt index of 3 (Japanese JSR, trade name JSR RB 820, hereinafter referred to as 'RB820');

Barium sulfate, calcium carbonate and other inorganic materials have an average particle diameter of 1.7 µm to 7.0 µm. One or two selected from master batches in which about 50 to 85 parts by weight of commercially available products are mixed with ethylene-vinylacetate copolymer resin or LDPE resin. It is a single | mono layer film using the compound which melt-mixed using the above twin screw extruder.

Extrusion coating processing temperature is 180 ~ 220 ℃ based on the T-die, the coating thickness of the sandwich layer is 50 ~ 100㎛.

The results of evaluating the properties of each laminated coat fiber are shown in Table 1.

The results of evaluating the properties of each laminated coat fiber are shown in Table 1.

Table 1. Evaluation of Composition and Characteristics of Laminated Coating Fibers Prepared Using the Second Component, a Single Layer Blown Film

Examples 17-31

After preparing the second component (film) winding roll (3) on which the multilayer film produced by using the multilayer blown film molding machine was wound as the second component, the first component, the sandwich resin, the extrusion coating conditions and other The apparatus was manufactured in the same manner as in Example 1, where the laminated coating fibers were bonded to the multilayer film by sandwiching.

The resin composition of each layer of the multi-layer blown film is as shown in Table 2. The multi-layer blown film was manufactured using a three-layer blown film forming machine composed of an extruder having an inner layer, a middle layer, and an outer layer of 30/40/30 mmφ, respectively, and the thickness of each layer was 1: 2: 1 and the film thickness was 50-200 μm. . The result of having evaluated the characteristic of each laminated film fiber is shown in Table 3.

Table 2. Second component of multilayer blown film

Table 3. Evaluation of Composition and Characteristics of Laminated Coating Fibers Prepared Using the Second Component of Multi-Blown Blown Film

Examples 32-41

After preparing the second component (film) winding roll (3) on which the multilayer film produced by using the multilayer flat film forming machine is wound as the second component, the first component, the sandwich resin, the extrusion coating conditions and other apparatuses In the same manner as in Example 1 to prepare a laminated film fiber in which the multilayer film was bonded with a sandwich.

The resin composition for each layer of the multilayer flat film is as described in Table 4 above.

Table 4. Second component of the multilayer flat film

The multilayer flat film was manufactured using a three-layer flat film molding machine composed of an extruder having an inner layer, a middle layer, and an outer layer of 35/45/35 mmφ, respectively, and the thickness of each layer was 1: 2: 1 and the film thickness was 100-500 μm. The results of evaluating the properties of each coat fiber are shown in Table 5.

Table 5. Evaluation of Composition and Characteristics of Laminated Coating Fibers Prepared Using the Second Component of the Multilayer Flat Film

Comparative Example 1

On one surface of the polyester fiber fabric, the laminated coating fibers were prepared by simple extrusion coating with the resin composition shown in Table 6, and the results of evaluating the characteristics of each coating fiber are shown in Table 6.

In the above examples and comparative examples, the extrusion coating conditions for the simple extrusion coating or sandwich layer configuration were a coating speed of 30 m / min and 60 m / min at a T-die temperature of 185 ° C. and a screw rotational speed of 120 rpm. Coating thickness of resin is 50 and 100 micrometers, respectively. In the case of using the fiber cloth as the coating base material, since there are many voids on the fiber surface, the molten resin film touches the fiber surface and squeezes between the nip roll and the cooling roll, so that a considerable amount of resin fills the voids on the fiber surface, which is actually higher than the thickness of the coating layer resin. The elongated thickness is much smaller, resulting in a loss of thickness of the resin layer. At this time, the resin layer thickness loss rate of the laminated extruded coated fiber is calculated from the ratio of the theoretical thickness of the extruded coated layer and the actual increase in thickness by coating the resin at the thickness of the fiber in the laminated coated fiber as shown in the following equation (1). , The loss of the resin layer thickness of the laminated coating fiber prepared by sandwiching a single layer or a multilayer film with the second component is obtained by adding the thickness of the second layer of the single layer or multilayer film to the thickness of the sandwich layer resin and the thickness of the fiber. By coating the resin, it is calculated as the following equation (2) from the ratio of the actually increasing thickness.

Formula (1)

((Fabric Fiber Thickness + Coating Layer Resin Thickness)-Laminated Fiber Thickness)

Coating layer resin thickness

Formula (2)

((Fabric Fiber Thickness + Coating Layer Resin Thickness + Film Thickness)-Laminated Fiber Thickness)

(Coating layer resin thickness + film thickness)

As shown in the experimental results of the comparative example of Table 6, in the case of the laminated coated fiber in which the resin was simply extruded, the thickness loss rate of the resin layer was greater than 75% for LDPE1 and about 60% for EVA1. Therefore, there is a difficulty in increasing the thickness of the laminated coat fiber. In particular, in the case of coating the polyolefin resin by a simple extrusion coating method, in order to thicken the resin layer, the extrusion amount of the resin should be increased and the coating speed should be lowered. In the case of general extrusion coating equipment, the extrusion speed is maximized and the coating speed is minimized. It is very difficult to make the thickness of the resin layer 100 micrometers or more. In addition, when the fiber fabric is used as a substrate, it is difficult to increase the coating layer thickness to 50 μm or more because the voids are large and the thickness loss ratio of the resin layer is large as described above. However, in the case of the laminated coated fiber obtained by sandwiching the single-layer film of Example 1 (Table 1) as the second component, the total resin layer thickness loss rate is 40% or less, thereby making a thicker resin layer than the simple extrusion coating process. . Increasing the thickness of the laminated resin layer can impart a luxurious touch to the fiber fabric and improve the restoring force and elasticity. In particular, in the process of manufacturing the film as the second component, SBS, EPR, Engage resin It can be seen that the elasticity is significantly improved by adding the TPE and the rubber component having high elasticity. In addition, when a large specific gravity such as calcium carbonate or barium sulfate is added, it is understood that the specific gravity of the resin layer is increased, thereby improving the resilience.

In the case of Example 2 (Tables 2 and 3) using a multilayer blown film as the second component, the composition of the layer can be freely formed, and in particular, the layer thickness can be made much thicker than that of the single layer film. It can be seen that the overall thickness of can be increased, and the resin layer thickness loss rate can also be lowered to 10% or less. By freeing the layer structure and thickness, it is possible to obtain a laminated coated fiber having improved restoring force and elasticity.

In the case of Example 3 (Tables 4 and 5) using the multilayer flat film as the second component, the composition of the layer can be freely increased and the layer thickness can be increased to 400 µm or more, thereby making the laminated film fiber feel more. It has been shown that it can be made luxuriously and can further improve resilience and elasticity.

Table 6. Results of evaluation of composition and characteristics of laminated coated fiber obtained by simply extruded resin on fiber fabric (Comparative Example)

Comparative Example 2:

Tensile strength and tearing strength were evaluated to compare and evaluate the mechanical properties of the laminated coated fiber produced by the present invention with commercial products processed by the calender process of PVC and the fiber used as the first component in the present invention. The fibers are polyester (600 x 600, 64T) and are the same fabrics currently used to laminate PVC in the calendar process. At this time, the thickness of the coated fiber laminated PVC is 540㎛, the thickness of the fabric is 380㎛, the product of the present invention adopted for comparative evaluation 1-1-5 of Example 1. In the present comparative example, 1-5 was used for comparative evaluation, and it was adopted for the convenience of comparison.

As can be seen from the above Examples and Comparative Examples, the laminated coated fiber according to the present invention is free to adjust the thickness, excellent adhesion between the fiber and the film of each component, excellent elasticity and resilience, the mechanical of the fiber In addition to significantly improving physical properties, even if the thickness is thinner than PVC products, it can be seen that the mechanical properties are better.

Mechanical properties such as tensile strength, elongation rate, poor puncture strength, tear strength, rupture strength, electrostatic dissipation, hydrostatic head and flammability of the polyester coated fibers prepared in Examples and Comparative Examples are as follows. It carried out in the same way.

Thickness was measured and the average value was measured at intervals of about 10 cm in the transverse direction of the prepared laminated film fibers. The measuring instrument used Mitutoyo's Digital Indicator (Model: WA100).

Resilience is to cut the laminated film fiber manufactured 10cm horizontally and vertically, and then fold it once in the transverse and longitudinal directions, and fix the folded part with forceps to give it bending and wrinkles by force and leave it for 24 hours. After removal of the forceps, the time to remove the wrinkles was relatively compared.

Elasticity was compared with the angle of bending when the laminated coated fiber was cut into 10 cm long and 2 cm long, held with one hand, bent in half, and then momentarily removed force.

Tensile strength and tear strength were measured using Instron Model 4204Ⅱ, INSTRON's universal testing machine, and the cross-head speed was 100 mm / min.

Figure 3 is a table showing the results of experiments with Example 17 of the present invention and the tear and tensile strength of the conventional product shows that the present invention has superior strength than other products.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a detailed view of the manufacturing process of the present invention, Figure 2 is a photograph (A) single layer, (B) multi-layer photographing the layer structure diagram of the laminated film fibers prepared by sandwiching the single layer and the three-layer film in the present invention, respectively, Figure 3 shows a mechanical characteristic chart of the laminated coating fiber of the present invention, the first component (fiber fabric) winding roll (1), Ti die (2), the second component (film) winding roll (3) It can be seen that the laminated coating fiber winding roll (4), the guide roll (5), the paper roll (6).

Looking at the structure, as shown in Figure 1, the first component (fiber fabric) winding roll 1, the first component (fiber fabric) is wound, and the second component (film) is wound Laminate the constituent (film) winding rolls (3), and the first and second constituents drawn from the first constituent (fiber fabric) winding rolls (1) and the second constituent (film) winding rolls (3). Two paper rolls (6), the two paper rolls (6) located at the center of the upper and the die (2) in which the adhesive (sandwich resin) is embedded, and the first component (fiber fabric) winding roll (1) A laminate in which a single-layer or multilayer molded film composed of a sandwiched film consisting of a second component (film) winding roll (3) and a guide roll (5) for guiding a sheet wound from the laminated coating fiber winding roll (4) is sandwiched. It can be seen that the manufacturing apparatus of the coated fiber.

The present invention manufactured as described above is composed of a fiber fabric as a first component, a single layer or a multilayer film as a second component, and the first component and the second component are bonded by an adhesive layer (sandwich resin). It is a structure of the laminated film fiber which the single layer or the multilayer molding film adhered by the sandwich.

Another example is composed of a second component on top, an adhesive layer (sandwich resin) formed under the second component, and a first component (fiber fabric) formed under the adhesive layer (sandwich resin).

Laminated coated fiber provided by the technology provided by the present invention is a large, expensive calender equipment that is essential for laminating the most widely used natural rubber, synthetic rubber or polychlorinated vinyl resin (hereinafter referred to as PVC) to the fiber. Unlike conventional PVC materials that can cause environmental pollution by dioxin emission at the time of incineration and economic effect to replace the, there is no environmentally friendly effect without any dioxin emission. In addition, the technology according to the present invention provides a product that can impart a variety of functions to the sandwich resin and single layer or multilayer film layer according to the use and market characteristics, thereby providing shoes, clothing, bags, miscellaneous goods and other industrial uses. It can be used as a major raw and subsidiary material.

The present invention as described above, the laminated coating fiber is free of thickness adjustment, excellent adhesion between each component of the fiber and the film, excellent elasticity and resilience, natural, synthetic rubber of large, expensive calender equipment is essential Economical effect that can replace processing and PVC material that can cause environmental pollution by dioxin emission during incineration.In addition to environmentally-friendly effect, it can be used for adhesive layer (sandwich resin) and single layer or multilayer film layer. It can provide technology and products that can be given functions, which can be used as main raw materials for shoes, clothing, bags, sundries and other industrial uses.

Claims (7)

In the laminated coating fiber to which a single layer or multilayer molded film is bonded by sandwich, A single layer comprising a fiber fabric as a first component and a single layer or a multilayer film as a second component, wherein the first component and the second component are bonded with an adhesive (sandwich resin). Laminated coated fiber in which a multilayer molded film is bonded with a sandwich. The method of claim 1, wherein the second component is represented by the general formula RCH = CH ₂ (where R is an alkyl group having 1 to 8 carbon atoms or hydrogen or a derivative thereof and a monomer containing oxygen or nitrogen as a functional group). Copolymer of alpha olefin resin obtained by superposing | polymerizing the monomer which can represent, and an olefin, and a (alpha), (beta)-unsaturated carboxylic acid ester or (alpha), (beta)-unsaturated carboxylic acid, or the copolymer of styrene-butadiene-styrene (SBS) or styrene-iso 1,2-polybutadiene resin, ethylene-propylene rubber, ethylene-propylene-butadiene rubber obtained by copolymerizing a copolymer of butadiene-styrene (SIS) or a monomer represented by RCH = CH ₂ , and an average particle diameter Any one selected from a master batch in which barium sulfate, calcium carbonate and silica are mixed with ethylene-vinylacetate copolymer resin or LDPE resin in an amount of about 50 to 85 parts by weight. A laminated coated fiber obtained by sandwiching a single layer or multilayer molded film with a sandwich, characterized in that the compound is prepared alone or mixed. The method of claim 1, wherein the second component is a single layer or multilayer molded film sandwiched with a thermoplastic resin, characterized in that the content of the thermoplastic elastomer or rubber is 50 parts by weight or less in the film component. Laminated coated fiber bonded by The method of claim 1, wherein the adhesive (sandwich resin) is a general formula RCH = CH ₂ (where R is an alkyl group having 1 to 8 carbon atoms or hydrogen or a derivative thereof and a monomer containing oxygen or nitrogen as a functional group) Copolymers of olefins with alpha olefin resins obtained by polymerizing monomers which can be represented by olefins with α, β-unsaturated carboxylic acid esters or α, β-unsaturated carboxylic acids or styrene-butadiene-styrene (SBS) Resin components such as 1,2-polybutadiene resin, ethylene-propylene rubber and ethylene-propylene-butadiene rubber obtained by copolymerizing isobutadiene-styrene (SIS) or a monomer represented by RCH = CH ₂ . A single layer or multi-layer laminated film fiber bonded to a single-layer or multilayer molded film, characterized in that used as a sandwich resin in an extrusion coating machine alone or mixed. In the manufacturing method of the laminated film fiber which adhere | attached the single layer or multilayer molded film by the sandwich, A first component (fiber fabric) winding roll (1) wound around a first component, which is any one selected from polyester fibers, nylon fibers, or a general fiber fabric, is prepared, and the resin, which is a second component, is coated with a single layer. After preparing a second component (film) winding roll (3) on which a single-layer film manufactured by using a new film extruder or a flat film extruder is prepared, the first component (fiber fabric) winding roll (1), and Each component wound in the second component (film) winding roll (3) on which the two components are wound is taken out through the guide roll (5) to the lamination roll (6), and then The thermoplastic resin alone or with an extrusion coating adhesive (sandwich resin) in the Ti die 2 located at the center of the two lamination rolls 6 as a sandwich layer for bonding and laminating the first component and the second component. While extruding the thermoplastic resin, the thermoplastic elastomer, or the rubber into the mixed component, the first and second components of the laminated film coated with the laminated film is guided by the guide roll (5) in the laminated coating film winding roll (4) A method of manufacturing a laminated coat fiber in which a single layer or multilayer molded film is bonded by a sandwich, wherein the single layer or multilayer molded film is bonded by a sandwich. In the manufacturing method of the laminated film fiber which adhere | attached the single layer or multilayer molded film by the sandwich, Prepare a first component (fiber fabric) winding roll (1) wound around the first component composed of any one selected from polyester fiber, nylon fabric or ordinary fiber fabric, and thermoplastic resin, thermoplastic elastomer, natural rubber or synthetic rubber To prepare a second component (film) winding roll (3) wound by forming a single layer or a multi-layer blown or flat film of a second component composed of a single component or a mixed component, and then the first component After preparing the Ti die (2) containing the adhesive (sandwich resin) with a sandwich layer extrusion coating resin for bonding and laminating the second component, the first component (fiber fabric) winding roll (1), Each of the components wound in the second component (film) winding roll 3 on which the second component is wound is taken out through the guide roll 5 to the paper roll 6, and then the two paper rolls 6 The adhesive (sandwich) located at the top of the center G) is discharged the adhesive from the built-in T-die (2) by laminating the first component and the second component laminated film as described above by the guide roll (5) to guide the laminated coating fiber winding A method for producing a laminated coat fiber, wherein a single layer or multilayer molded film is bonded by a sandwich, characterized by being rolled up in a roll (4). In the manufacturing apparatus of the laminated film fiber which adhere | attached the single layer or multilayer molded film by the sandwich, A first component (fiber fabric) winding roll 1 on which the first component (fiber fabric) is wound, a second component (film) winding roll 3 on which the second component (film) is wound, Two lamination rolls 6 for laminating the first and second components drawn from the first component (fiber fabric) winding roll 1 and the second component (film) winding roll 3, and the two Ti die (2), the first component (fiber fabric) winding roll (1), the second component (film) winding in which the adhesive (sandwich resin) is built and located at the center of the two paper rolls 6 An apparatus for producing a laminated coated fiber, wherein a single layer or multilayer molded film is bonded by a sandwich, comprising a roll (3) and a guide roll (5) for guiding a sheet wound from the laminated coat fiber winding roll (4).

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