JP5970352B2 - Snap manufacturing method - Google Patents

Description

The present invention relates to a method of manufacturing a snap used for engaging clothes, bags, bags, footwear and the like.

  Various means such as snaps, buttons, fasteners, hook-and-loop fasteners, hooks and the like are used to engage the opening and closing parts of clothing garments, bags, bags, footwear and the like. Conventionally, the snaps are arranged in rows on a long tape fabric at predetermined intervals, and are known as an elegant engagement means.

  As a conventional proposal, Patent Document 1 proposes to expose a cloth on the surface of both male and female snap members. Patent Document 2 proposes to expose the cloth on the inner surface of the engaging portion of both the male and female members of the snap.

Japanese Patent No. 3606043 Japanese Patent Laid-Open No. 10-033211

  However, the conventional proposal has a problem that the engaging surface of the male and female members is a cloth, and the cloth is damaged. Moreover, since the cloth in either or both members is deformed and molded, there is also a problem that wrinkles are likely to enter the cloth.

In order to solve the above-mentioned conventional problems, the present invention prevents the fabric from being damaged by using the engagement surface of the male and female members as a resin, and prevents the fabric in both the male and female members from wrinkling . A manufacturing method is provided.

The method of manufacturing a snap according to the present invention includes fixing a synthetic resin male member to one fabric by integral molding, fixing a synthetic resin female member to the other fabric by integral molding, and pushing the male member into the female member. A method of manufacturing a snap to be engaged with a metal, wherein a gold is sandwiched from a gate located at any part of a cloth exposed portion inside a ring-shaped protrusion of a non-engaging surface of the male member and the female member. By injecting a thermoplastic resin or a thermoplastic elastomer into the mold , the non-engagement surfaces of the male member and the female member both have ring-shaped protrusions, and the fabric is exposed inside the ring-shaped protrusions. The female member on the engagement surface has a bottom surface covering the cloth, a ring-shaped protrusion around the periphery, a tip projecting inwardly to form a recess between the bottom surface, and the male member has a bottom surface covering the cloth. Covering, ring around When the male member is pushed into the female member, the convex portion of the male member is engaged with the concave portion of the female member, and the engaging surface is the male surface. and wherein the obtaining the member and snap the Ru is formed of a resin that constitutes the female member.

  The snap of the present invention can prevent the fabric of the engaging surface from being damaged by using the engaging surfaces of the male and female members as the resin constituting each member. In addition, the inner central portion of the ring-shaped protrusion on the surface opposite to the engaging surface of the male and female members can be used as a snap that does not cause wrinkles in the fabric of both the male and female members by exposing the fabric. In addition, the engagement surface side of the male and female members covers the fabric with resin, so that a snap with high strength can be obtained.

FIG. 1 is a cross-sectional view when a snap is engaged in an embodiment of the present invention. FIG. 2 is a plan view of the female member of the snap in one embodiment of the present invention. FIG. 3 is a plan view of the male member of the snap in one embodiment of the present invention.

  The present invention is a snap in which a synthetic resin male member is fixed to one fabric by integral molding, a synthetic resin female member is fixed to the other fabric by integral molding, and the male member is pushed into and engaged with the female member. . On the surface opposite to the engagement surface, both the male member and the female member have ring-shaped projections, the fabric is exposed at the inner center portion of the ring-shaped projection, and the engagement surfaces of both members cover the fabric with resin. Thereby, both cloth can be made into a substantially straight state and generation | occurrence | production of a wrinkle including the circumference | surroundings can be prevented.

  A ring-shaped protrusion is formed around the engaging surface of the female member, and the tip protrudes inward to form a recess between the bottom surface. The male member engagement surface has a ring-shaped projection around the tip and protrudes outward to form a convex portion. When the male member is pushed into the female member, the convex portion of the male member engages with the concave portion of the female member. . Thereby, firm engagement is possible.

  Resin constituting the male member and the female member exists on the engaging surfaces of the male and female members. Thereby, the fabric of the engaging surface can be prevented from being damaged.

  The male member and the female member are preferably formed of a thermoplastic resin or a thermoplastic elastomer. Examples of the thermoplastic resin include polyethylene, polypropylene, polystyrene, acrylonitrile-styrene (AS) resin, acrylonitrile-butadiene-styrene (ABS) resin, vinyl chloride (PVC) resin, methacryl (PMMA) resin, and polyester (PET, PBT) resin. , Polyvinylidene chloride (PVDC) resin, ethylene-vinyl alcohol (E / VAL) resin, ionomer, polyamide (nylon) resin, polyacetal (POM) resin, polycarbonate (PC), modified polyphenylene ether (m-PPE), polysulfone ( PSU), polyethersulfone (PES), polyphenylene sulfide (PPS) and the like. Examples of thermoplastic elastomers include styrene (SBC), olefin (TPO), vinyl chloride (TPVC), urethane (TPU), ester (TPEE), polyamide (TPAE), fluorine, and chlorinated polyethylene (CPE). And the like.

  In the engaged state of the male member and the female member, the preferable thickness of the whole male and female member is 4 mm or less, more preferably 3.2 mm or less. The maximum diameter is preferably 10 mm or less, more preferably 9 mm or less. It is for making it a compact shape.

  In the snap manufacturing method of the present invention, the male member and the female member are formed by injection molding from any part of the fabric exposed surface, preferably from a substantially central part. When injection molding is performed from this position, the resin wraps around most efficiently, and the molten resin passes through the cloth and reaches the ring-shaped protrusion on the surface opposite to the engaging surface of the male and female members.

  This will be described below with reference to the drawings. In the following drawings, the same reference numerals indicate the same members or parts. FIG. 1 is a cross-sectional view when a snap is engaged in an embodiment of the present invention. A female member 3 is integrally formed on the cloth 1 and a male member 10 is integrally formed on the cloth 2 by injection molding. The female member 3 has a ring-shaped protrusion 4 on the surface opposite to the engagement surface, and the inner center of the ring-shaped protrusion 4 is a fabric exposed portion 5. The bottom surface of the engaging surface of the female member 3 covers the fabric 1, and the periphery is a ring-shaped engaging protrusion 6, and the tip 7 protrudes inward to form a recess 8 between the bottom surface.

  The male member 10 has a ring-shaped protrusion 11 on the surface opposite to the engagement surface, and the center of the inner side of the ring-shaped protrusion 11 is a fabric exposed portion 12. The bottom surface of the engagement surface of the male member 10 covers the fabric 2, the periphery is a ring-shaped engagement protrusion, and the tip protrudes outward to form a convex portion 14.

  When the male member 10 is pushed into the female member 3, the convex portion 14 of the male member 10 engages with the concave portion 8 of the female member 3. Moreover, the engagement surface of the male member 10 and the female member 3 is resin which comprises a male member and a female member. 9 is an engaging surface of the female member, and 13 is an engaging surface of the male member.

  FIG. 2 is a plan view seen from the side opposite to the engaging surface of the female member 3 of the snap in one embodiment of the present invention. A ring-shaped protrusion 4 is integrally formed on the cloth 1, and the inner center of the ring-shaped protrusion 4 is a cloth exposed portion 5. Molding is performed by injecting a thermoplastic resin or a thermoplastic elastomer into a mold (not shown) sandwiching the fabric 1 by injection molding from the gate position 15 at the substantially central portion of the fabric exposed portion 5.

  FIG. 3 is a plan view seen from the opposite side of the engaging surface of the male member of the snap in one embodiment of the present invention. A ring-shaped protrusion 11 is integrally formed on the cloth 2, and the inner center of the ring-shaped protrusion 11 is a cloth exposed portion 12. Molding is performed by injecting a thermoplastic resin or a thermoplastic elastomer into a mold (not shown) sandwiching the fabric 2 from the gate position 16 at the substantially central portion of the fabric exposed portion 12 by injection molding. 1 to 3, the thicknesses of the doughs 1 and 2 may be arbitrary, preferably 0.1 to 1.0 mm, and more preferably 0.2 to 0.8 mm. Also, as the types of fabrics 1 and 2, general tape fabrics can be used, for example, woven fabrics, knitted fabrics, nonwoven fabrics, and the like.

  This will be described below with reference to examples. In addition, this invention is not limited to a following example.

Example 1
A polyacetal (POM) resin was used as the resin, and the snaps shown in FIGS. As for the dimensions, the outer diameter of the male member was 6.7 mm, the thickness was 1.5 mm, and the thickness of the tape fabric integrally formed with the male member was 0.5 mm. The female member had an outer diameter of 8.7 mm and a thickness of 1.95 mm, and the thickness of the tape fabric integrally formed with the male member was 0.5 mm. The total thickness in the engaged state of the snaps (male and female members) was 3.1 mm, and the maximum diameter was 8.7 mm. Seven snaps were formed on the tape fabric at intervals of 80 mm. The fabric of both male and female members could be molded in a substantially straight state, and no wrinkles were generated including the periphery. The tape fabric was sewn on a shirt and tested for wearing. As a result, the fabric on the engagement surface could be prevented from being damaged even when used for a long time, the snap strength was high, the attachment / detachment was easy, and the usability was good.

(Example 2)
A polyacetal (POM) resin was used as the resin, and the snaps shown in FIGS. As for the dimensions, the outer diameter of the male member was 6.7 mm, the thickness was 1.5 mm, and the thickness of the tape fabric integrally formed with the male member was 0.3 mm. The female member had an outer diameter of 8.7 mm, a thickness of 1.95 mm, and the thickness of the tape fabric integrally formed with the male member was 0.3 mm. The total thickness in the engaged state of the snaps (male and female members) was 2.7 mm, and the maximum diameter was 8.7 mm. Seven snaps were formed on the tape fabric at intervals of 80 mm. The fabric of both male and female members could be molded in a substantially straight state, and no wrinkles were generated including the periphery. The tape fabric was sewn on a shirt and tested for wearing. As a result, the fabric on the engagement surface could be prevented from being damaged even when used for a long time, the snap strength was high, the attachment / detachment was easy, and the usability was good.

  Snaps of the present invention include shirts, cardigans, jackets, jumpers, and other underwear, middle garments, clothing garments including jackets, sleeves, pockets, folded parts at the bottom of trousers, belt stoppers, bags, bags, The present invention can be widely applied to the engagement of opening / closing parts such as footwear.

DESCRIPTION OF SYMBOLS 1, 2 Material | dough 3 Female member 4,11 Ring-shaped protrusion 5,12 Material | dough exposed part 6 Ring-shaped protrusion 7 The front-end | tip part 8 of a ring-shaped protrusion 9 Recessed surface 9 of a female member Male member 13 Male member 13 Engagement surface 14 Male member protrusions 15 and 16 Gate position

Claims (5)

A method of manufacturing a snap in which a synthetic resin male member is fixed to one fabric by integral molding, a synthetic resin female member is fixed to the other fabric by integral molding, and the male member is pushed into engagement with the female member. There,
A thermoplastic resin or a thermoplastic elastomer is injected into a mold sandwiching the fabric from a gate located at any part of the fabric exposed portion inside the ring-shaped protrusion on the non-engaging surface of the male member and the female member. By molding
The non-engaging surfaces of the male member and the female member both have ring-shaped protrusions, and the fabric is exposed inside the ring-shaped protrusions,
The female member on the engagement surface has a bottom surface covering the fabric, the periphery is a ring-shaped projection, the tip protrudes inward and forms a recess between the bottom surface, and the male member has a bottom surface that covers the fabric. Is a ring-shaped protrusion and the tip protrudes outward to form a convex part,
With the convex portion of the male member and pushes the male member to the female member engages the recess of the female member, the engagement surface to obtain a snap that will be formed by the resin constituting the male member and the female member A manufacturing method of a snap characterized by the above. The method for manufacturing a snap according to claim 1, wherein the cloth portion integrally formed with the male member and the female member is in a substantially straight state, and there is no generation of wrinkles including the periphery. The method of manufacturing a snap according to claim 1 or 2, wherein the male member and the female member are formed of a thermoplastic resin or a thermoplastic elastomer. The method for manufacturing a snap according to any one of claims 1 to 3, wherein in the engaged state of the male member and the female member, the total thickness of the male and female members is 4 mm or less and the maximum diameter is 10 mm or less. The method of manufacturing a snap according to any one of claims 1 to 4 , wherein the position of the gate is the center of the cloth exposed portion inside the ring-shaped protrusion on the non-engaging surface of the male member and the female member .

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