JP2018065370A - Textile/resin laminated structure housing and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a textile/resin laminated structure housing which dissipates static electricity generated by contact, friction or the like and can prevent charging, and allows a customer to freely select a decorative design of a product without application of various decorative materials as a textile layer, and to provide a method for manufacturing the same.SOLUTION: A textile/resin laminated structure housing 40 has a textile layer 2, an antistatic non-woven fabric layer 4 bonded to the textile layer 2 through an adhesive resin application layer 3, an a base resin layer 5 stuck to the textile layer 2 while melt-bonded to the resin in the gap between each of the fibers of the non-woven fabric layer 4.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a textile / resin laminated structure housing and a manufacturing apparatus thereof, and more particularly to a textile / resin laminated structure having antistatic properties and a manufacturing apparatus thereof.

  In the technical field of housings for electronic devices, home appliances, etc. and housings for automobile interior parts, the housings are often made by resin molding in which a decorative material is laminated on the outer surface. Decorative material is an indispensable element for differentiating from other products. In such a situation, some companies can freely select a decorative design of a product by applying various decorative materials to the resin molded housing even for the same product.

  As a technique related to the above-mentioned field, for example, charging is performed while infiltrating a gap between a transparent acrylic film layer and an antistatic textile layer bonded to each other through an adhesive resin layer and each fiber of the antistatic textile layer. There is a textile / resin laminated housing comprising a base resin layer fixed to a preventive textile layer (see, for example, Patent Document 1).

  According to this textile / resin laminated housing, static electricity generated by contact, friction, etc. can be eliminated to prevent electrification, and dust and dirt can adhere to the surface of the molded product, impairing appearance and transparency. Problems such as discomfort due to electric shock to the human body, generation of noise and malfunction in electronic devices can be solved.

  However, since the textile / resin laminated housing of the technical document 1 is limited to those having an antistatic property for the textile layer, various decorative materials cannot be applied as the textile layer, and the customer can freely add products. Cannot select a decoration design.

JP 2014-184705 A

  The object of the present invention is to eliminate static electricity generated by contact, friction, etc. to prevent electrification. In addition, various decorative materials can be applied as a textile layer so that customers can freely An object of the present invention is to provide a textile / resin laminated structure housing and a manufacturing apparatus thereof in which a decorative design can be selected.

  In order to achieve the above object, the textile / resin laminated structure housing according to claim 1 includes a textile layer, an antistatic nonwoven fabric layer bonded to the textile layer via an adhesive resin layer, and the nonwoven fabric layer. And a base resin layer fixed to the nonwoven fabric layer while infiltrating the gaps between the fibers.

  The textile / resin laminated housing manufacturing apparatus according to claim 10, wherein the nonwoven fabric layer is a surface of a laminate of a textile layer and an antistatic nonwoven fabric layer bonded to the textile layer via an adhesive resin layer. A fixed mold to be received, a movable mold to be moved toward the fixed mold so as to push the received laminated body into the fixed mold to form the laminate, and the molded Another fixed mold for receiving the laminated body with the textile layer as a front surface, an injection mold that is moved toward the laminated body received in the other fixed mold, and the other fixed mold And an injection means for injecting the resin solution of the base resin layer into a space defined by the laminate and the injection mold.

  The textile / resin laminated structure housing manufacturing apparatus according to claim 11, wherein the nonwoven fabric layer is a surface of a laminate of a textile layer and an antistatic nonwoven fabric layer bonded to the textile layer via an adhesive resin layer. A stationary mold to be received, a movable mold to be moved toward the stationary mold so as to push the received laminated body into the stationary mold to form the laminated body, and the stationary mold The resin solution of the base resin layer is injected into a space defined by the injection mold that is moved toward the laminate pressed into the mold, the laminate that is received by the fixed mold, and the injection mold. Injecting means for carrying out the invention.

  According to the textile / resin laminated structure housing according to claim 1, in addition to eliminating static electricity generated by contact or friction and preventing charging, various decorative materials are applied as the textile layer. The customer can freely choose the decorative design of the product.

  According to the textile / resin laminated housing manufacturing apparatus according to claim 10 or 11, in addition to being able to eliminate static electricity generated by contact, friction and the like and prevent charging, various textile layers can be used. A textile / resin laminated housing can be efficiently manufactured, in which a decorative material can be applied and a customer can freely select a decorative design of the product.

1 is an external perspective view of a textile / resin laminated structure housing according to an embodiment of the present invention. It is sectional drawing of the textile / resin laminated structure housing which follows the line II-II of FIG. FIG. 3 is a cross-sectional view of the textile / resin laminate housing taken along line III-III in FIG. 1. It is a perspective view of the antistatic nonwoven layer in FIG. It is a perspective view of the modification of the antistatic nonwoven layer in FIG. It is a figure used for demonstrating the manufacturing apparatus of the textile / resin laminated structure housing which concerns on embodiment of this invention.

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

  FIG. 1 is an external perspective view of a textile / resin laminated housing according to an embodiment of the present invention.

  In FIG. 1, a textile / resin laminated structure housing 40 (hereinafter sometimes simply referred to as “housing 40”) is a casing having a reverse basin structure, and one protrusion 41 and one opening at the bottom of the reverse basin structure. 42.

  The cross section of the protrusion 41 is shown in FIG. 2 as a cross-sectional view along line II-II in FIG. 1, and the cross section of the opening 42 is shown in FIG. 3 as a cross-sectional view along line III-III in FIG. .

  The housing 40 is fixed to the nonwoven fabric layer 4 while infiltrating the gaps between the fibers of the textile layer 2, the antistatic nonwoven fabric layer 4 bonded to the textile layer 2 through the adhesive resin coating layer 3, and the nonwoven fabric layer 4. The base resin layer 5 is provided.

  The textile layer 2 consists of textiles containing textiles, such as a woven fabric, a nonwoven fabric, and a knitted fabric. Examples of the textile fibers include natural fibers, synthetic fibers, semi-synthetic fibers, and carbon fibers.

  In this textile, various designs can be easily obtained, and the three-dimensional feeling of the fiber fabric is displayed as it is. In addition, the use of the textile has the effect of increasing the strength of the housing 40 in addition to increasing the degree of freedom in design of the housing 40.

  The adhesive resin coating layer 3 is made of a polyvinyl acetal-based resin having thermoplasticity and a viscosity sufficient to allow bubbles in the adhesive resin coating layer 3 to escape by softening when the housing 40 is molded.

  This polyvinyl acetal resin is obtained by acetalizing a polyvinyl alcohol (PVA) resin with an aldehyde, and is particularly preferably a polyvinyl butyral (PVB) resin acetalized with butyraldehyde.

  The adhesive resin application layer 3 is formed by applying (spraying) an adhesive resin solution heated and melted to the nonwoven fabric layer 4. The adhesive resin application layer 3 may be formed by applying (spraying) an adhesive resin solution heated and melted to the textile layer 2.

  The PVB resin may contain a plasticizer for the purpose of imparting flexibility to the adhesive resin coating layer 3, and the type of the plasticizer is not particularly limited. For example, triethylene glycol di-2-ethylhexylate, Monobasic organic acid esters such as ethylene glycol di-2-ethylbutyric acid ester and triethylene glycol di n-octylic acid ester, polybasic organic acid esters such as dibutyl sebacic acid ester and dioctyl azelaic acid ester, polyoxypropylene polyglyceride And polyglycerin derivatives such as ether ether and polyethylene glycol polyglyceryl ether.

  The adhesive resin coating layer 3 is made of polyvinyl acetal resin, ethylene / vinyl acetate copolymer resin, ethylene / acrylic copolymer resin, propylene resin, propylene / 1-butene copolymer resin, propylene / isobutene copolymer. Polymer resin, styrene / propylene / isobutene copolymer resin, styrene / isoprene copolymer resin, styrene / isoprene / isobutene copolymer resin, styrene / isoprene / butene copolymer resin May be.

  The adhesive resin coating layer 3 may be made of an adhesive resin film made of PVB sandwiched between the textile layer 2 and the nonwoven fabric layer 4.

  The antistatic nonwoven fabric layer 4 is made of a spunbond nonwoven fabric or a papermaking nonwoven fabric containing polyester (specifically, PY-100 manufactured by Awa Paper Co., Ltd.). The thickness of the nonwoven fabric layer 4 is 50-1000 micrometers.

  Specifically, as shown in FIG. 4, in the antistatic nonwoven fabric layer 4, carbon fiber diameter yarns 52 and weft yarns 53 are woven into a thermoplastic resin fiber layer 51. The intervals between the carbon fiber diameter yarns 52 and the intervals between the diameter yarns 53 are 5 mm. These intervals are not limited to 5 mm, and may be 1 to 5 mm or 5 to 10 mm. This carbon fiber can be replaced with a conductive fiber.

  Specifically, each fiber of the thermoplastic resin fiber layer 51 has a thickness of 1 to 50 μm.

  Each fiber of the thermoplastic resin fiber layer 51 is made of at least one selected from the group consisting of polyester, polyamide, polypropylene, polyethylene, acrylic, polyacetal, and polycarbonate, and preferably made of polyester.

  In addition, as shown in FIG. 5, the nonwoven fabric layer 4 may preferably include a continuous carbon fiber 54 mixed in a thermoplastic resin fiber layer 51 (spun bond). The mixing ratio of the continuous carbon fibers 54 is preferably configured such that one of 2 to 10 nozzles of the spinning head discharges carbon fibers in the spunbond process.

  The base resin layer 5 is made of a thermoplastic synthetic resin, preferably a synthetic resin for injection molding. Specifically, ABS (acrylonitrile / butadiene / styrene copolymer), PC (polycarbonate), PMMA (polymethyl methacrylate). ), Polyamide, and one material selected from the group of ABS + PC, preferably ABS or polyamide, and the thickness is arbitrarily set according to the product, and in this embodiment is about 1.2 mm. The resin melt of the base resin layer 5 is heated and melted by an injection molding machine 20 shown in FIG. 6 to be described later, and the textile layer 2 and the nonwoven fabric layer 4 adhered to each other by the adhesive resin coating layer 3 are mounted with the nonwoven fabric layer 4 as the front. It inject | emits in the female metal mold | die 22 in FIG. 6 mentioned later, and infiltrate each fiber of the nonwoven fabric layer 4 (FIG. 6). When the resin solution of the base resin layer 5 is cooled and solidified, the non-woven fabric layer 4 is contracted, so that the base resin layer 5 is more firmly fixed.

  According to the housing 40 of FIG. 1, since the antistatic nonwoven fabric layer 4 is adhered to the textile layer 2 via the adhesive resin coating layer 3, the static electricity generated by contact, friction, etc. is eliminated and charging is prevented. In addition to being able to do so, a variety of decorating materials can be applied as the textile layer, and customers can freely choose the decorating design of the product.

  The housing 40 in FIG. 1 has an inverted basin structure with the textile layer 2 as a front, but the housing 40 may have an inverted basin structure with the base resin layer 5 as a front.

  FIG. 6 is a diagram used to explain a textile / resin laminated housing manufacturing apparatus according to an embodiment of the present invention.

  In FIG. 6, steps I and II are performed by a press machine, and steps III and IV are performed by an injection molding machine.

  First, the laminated body of the textile layer 2 and the antistatic nonwoven fabric layer 4 adhere | attached on the textile layer 2 through the adhesive resin application layer 3 is prepared.

  The adhesive resin application layer 3 is formed by applying (spraying) an adhesive resin melt that is heated and melted to the nonwoven fabric layer 4. The adhesive resin coating layer 3 may be formed by applying (spraying) an adhesive resin melt liquid heated and melted to the textile layer 2.

  The adhesive resin is melted by heating PVB at 120 to 250 ° C, preferably about 200 ° C.

  In step I of FIG. 4, the laminate of the textile layer 2, the adhesive resin coating layer 3, and the nonwoven fabric layer 4 is placed on the female die 10 (fixed die) of the press with the nonwoven fabric layer 4 as a front. . This laminated body may be cut into a predetermined shape in advance.

Next, in step II, the male die 11 (movable) of the press machine is pressed so that the laminate of the textile layer 2, the adhesive resin coating layer 3, and the nonwoven fabric layer 4 placed in step I is pushed into the female die 10. The mold) is moved toward the female mold 10. Thereby, after shape | molding the said laminated body in the shape prescribed | regulated with the female metal mold | die 10 and the male metal mold | die 11, this molded laminated body is taken out from a press machine. At this time, the periphery of the formed laminated body may be deburred by cutting with a laser cutter or a cutting die (cutting unit).

  Subsequently, in Step III of FIG. 6, the laminate formed by the press machine is mounted in the female mold 22 (other fixed mold) with the nonwoven fabric layer 4 as a table, and then in the female mold 22. The injection molding male mold 12 (injection molding mold) is moved toward the received laminate, and the injection hole 20a of the injection machine 20 is pressed against the injection molding hole 12a of the injection molding male mold 12. Then, the injection screw 21 is rotated clockwise to inject the resin melt 31 of the base resin layer 5 in the tank 30 into the space defined by the laminate and the injection molding male mold 12. At this time, the resin melt 31 of the base resin layer 5 is infiltrated into the gaps between the fibers of the nonwoven fabric layer 4 to improve the adhesion to the base resin layer 5 and the mechanical strength of the housing 40.

  Next, in Step IV, after the injection-molded base resin layer 5 is cooled and solidified, the injection machine 20 and the injection-molded male mold 12 are separated from the female mold 22 and the molded product is taken out.

  The female die 10 and the male die 11 constitute a press machine, and the female die 22, the injection molding male die 12 and the injection machine 20 constitute an injection molding machine. The press machine and the injection molding machine are a housing 40. The manufacturing apparatus is configured. As a modification, the press machine and the injection molding machine may be integrated, and the female die 10 may be used as the female die 22. In this case, the injection molded male mold 12 is moved toward the laminate of the textile layer 2, the adhesive resin coating layer 3, and the nonwoven fabric layer 4 molded in the female mold 10.

  According to the textile / resin laminated housing manufacturing apparatus of FIG. 4, the resin melt 31 of the base resin layer 5 infiltrates into the gaps between the fibers of the nonwoven fabric layer 4, and the nonwoven fabric layer 4 when the resin solution 31 is cooled and In addition to the firm adhesion with the nonwoven fabric layer 4 due to the shrinkage of the base resin layer 5, the manufacturing process of the housing 40 can be simplified.

  Further, according to the textile / resin laminated housing manufacturing apparatus of FIG. 6, since the nonwoven fabric layer 4 is interposed between the textile layer 2 and the base resin layer 5, the textile layer is formed during the injection molding of the base resin layer 5. The influence of heat on 2 can be reduced.

  In the textile / resin laminated structure manufacturing apparatus shown in FIG. 6, the housing 40 has an inverted basin structure with the textile layer 2 as a front. The housing 40 has an inverted basin structure with the base resin layer 5 as a front. It is good.

  In the embodiment of the present invention, the textile / resin laminated structure housing 40 is described as a general housing, but as an application technical field of the embodiment of the present invention, specifically, a container, Examples include household goods including stationery, housings for electronic devices and home appliances including mobile phones and laptop computers, housings for interior and exterior products of buildings and automobiles, interior housings for aircraft, railway vehicles, and ships.

2 Textile layer 3 Adhesive resin coating layer 4 Nonwoven fabric layer 5 Base resin layer 10 Female mold 11 Male mold 12 Injection molding male mold 20 Injection machine 21 Injection screw 22 Female mold 30 Tank 31 Resin solution 40 Textile / resin laminated structure Housing 41 Projection 42 Opening 51 Thermoplastic Nonwoven Layer 52 Warp 53 Weft

Claims (19)

  A textile layer; an antistatic nonwoven layer bonded to the textile layer via an adhesive resin layer; and a base resin layer fixed to the nonwoven layer while infiltrating the gaps between the fibers of the nonwoven layer. Textile / resin laminated housing characterized by   The textile / resin laminated structure housing according to claim 1, wherein the antistatic nonwoven fabric layer is composed of a nonwoven fabric and conductive continuous fibers mixed in the nonwoven fabric.   3. The textile / resin laminated housing according to claim 1, wherein the conductive continuous fiber is made of carbon fiber.   The textile / resin laminated structure housing according to any one of claims 1 to 3, wherein the adhesive resin layer is made of a polyvinyl acetal resin.   5. The textile / resin laminated housing according to claim 4, wherein the polyvinyl acetal resin is made of polyvinyl butyral (PVB).   6. The textile / resin laminated housing according to claim 1, wherein the base resin layer is made of a thermoplastic synthetic resin.   The textile / resin laminated structure housing according to claim 6, wherein the thermoplastic synthetic resin is made of a synthetic resin for injection molding.   The textile / resin laminated housing according to claim 7, wherein the synthetic resin for injection molding is made of one material selected from the group of ABS, PC, PMMA, polyamide, and PC + ABS.   9. The textile / resin laminated housing according to claim 8, wherein the synthetic resin for injection molding is made of ABS or polyamide.   A fixed mold for receiving a textile layer, and a laminate of an antistatic nonwoven fabric layer bonded to the textile layer via an adhesive resin layer with the nonwoven fabric layer as a front surface, and a receiving mold for forming the laminate. A movable mold that is moved toward the stationary mold so as to push the laminated body into the stationary mold, and another stationary mold that receives the molded laminated body with the textile layer as a front surface. A mold, an injection mold that is moved toward the laminate received in the other fixed mold, and a laminate and the injection mold that are received in the other fixed mold. An apparatus for producing a textile / resin laminated structure housing, comprising: an injection means for injecting a resin solution of a base resin layer into a space.   A fixed mold for receiving a textile layer, and a laminate of an antistatic nonwoven fabric layer bonded to the textile layer via an adhesive resin layer with the nonwoven fabric layer as a front surface, and a receiving mold for forming the laminate. A movable mold that is moved toward the fixed mold so as to push the laminated body into the fixed mold, and an injection mold that is moved toward the laminated body that is pushed into the fixed mold A textile / resin laminated structure housing comprising: a laminate received in the fixed mold; and an injection means for injecting a resin solution of a base resin layer into a space defined by the injection mold Manufacturing equipment.   The said antistatic nonwoven fabric layer consists of a nonwoven fabric and the electroconductive continuous fiber mixed in the said nonwoven fabric, The manufacturing apparatus of the textile / resin laminated structure housing of Claim 10 or 11 characterized by the above-mentioned.   The textile / resin laminated structure housing according to any one of claims 10 to 12, wherein the conductive continuous fibers are made of carbon fibers.   The textile / resin laminated housing manufacturing apparatus according to any one of claims 10 to 13, wherein the adhesive resin layer is made of a polyvinyl acetal resin.   The apparatus for manufacturing a textile / resin laminated structure housing according to claim 14, wherein the polyvinyl acetal resin is made of polyvinyl butyral (PVB).   16. The textile / resin laminated housing manufacturing apparatus according to claim 10, wherein the base resin layer is made of a thermoplastic synthetic resin.   The apparatus for manufacturing a textile / resin laminated housing according to claim 16, wherein the thermoplastic synthetic resin is made of a synthetic resin for injection molding.   The apparatus for manufacturing a textile / resin laminated structure housing according to claim 17, wherein the synthetic resin for injection molding is made of one material selected from the group of ABS, PC, PMMA, polyamide, and PC + ABS.   19. The apparatus for manufacturing a textile / resin laminated housing according to claim 18, wherein the synthetic resin for injection molding is made of ABS or polyamide.

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