CN112823686A - Zipper cloth belt, injection-molded zipper and preparation method of injection-molded zipper - Google Patents

Abstract

The invention discloses an injection molding zipper and a zipper cloth belt, wherein a woven structure is formed by warps and wefts, the injection molding zipper comprises a cloth belt main body part fixedly connected with a product and a zipper tooth fixing part arranged along one side edge of the cloth belt main body part and fixedly connected with zipper teeth, and at least one warp of the zipper tooth fixing part is provided with at least one reinforcing yarn with the melting point lower than the molding temperature of plastic steel teeth. The invention also discloses a preparation method of the injection molding zipper, which comprises the following steps: placing any one of the zipper cloth belts in a zipper tooth mold cavity; and injection molding the zipper teeth to fixedly connect the zipper teeth with the zipper teeth fixing part and strengthen the fusion of the yarns and the zipper teeth. According to the zipper cloth belt, the injection-molded zipper and the preparation method thereof, the whole zipper is not different from conventional products, but the binding force of the zipper teeth is obviously improved.

Description

Zipper cloth belt, injection-molded zipper and preparation method of injection-molded zipper

Technical Field

The invention relates to the technical field of zippers, in particular to a zipper cloth belt and an injection molding zipper, and further relates to a preparation method of the injection molding zipper.

Background

The zipper is a connecting piece which enables articles to be combined or separated by means of the continuously arranged zipper teeth, and is widely applied to clothes, bags and tents. The plastic steel zipper is a common zipper and is often used in clothes, the plastic steel zipper is lighter than a metal zipper in weight, higher in strength and lower in price than the metal zipper, and is simple in forming, so that the plastic steel zipper is the most widely used zipper product at present.

The slide fastener includes a pair of right and left woven fastener tapes and a plurality of fastener elements attached to opposite tape side edge portions of the fastener tapes, the fastener elements being made of synthetic resin or metal. A slider for opening and closing the fastener stringer is inserted through the element row of the fastener stringer. Further, a first stop (also referred to as an upper stop) is provided at a front end portion of the element row, and a second stop (also referred to as a lower stop) or a separable bottom end stop having a plug, a box pin, and a socket is provided at a rear end portion of the element row.

In general, a fastener element made of synthetic resin is formed by injection molding, that is, by using a mold having a cavity space corresponding to the shape of the fastener element and injecting the mold with a fastener tape sandwiched therebetween, and by injection molding a synthetic resin material, the fastener element is formed on a tape side edge portion (also referred to as an element attaching portion) of the fastener tape.

For the plastic steel zipper, due to the characteristics of plastic materials, the binding force of teeth of the plastic steel zipper is not high, and the phenomena of tooth falling, tooth leakage or tooth embrittlement of the zipper often occur, so that the product cannot be used directly, and great inconvenience is brought to a user.

In summary, how to effectively solve the problems of low binding force between teeth and cloth belts of the plastic steel zipper and the like is a problem to be solved by the technicians in the field at present.

Disclosure of Invention

In view of the above, a first object of the present invention is to provide a fastener tape having a structural design that can effectively solve the problem of low coupling force between teeth and tape of a plastic-steel fastener, and a second object of the present invention is to provide an injection-molded fastener including the above fastener tape and a method of manufacturing the same.

In order to achieve the first object, the invention provides the following technical scheme:

the utility model provides a zipper cloth belt, forms through warp and woof and weaves the tissue, including be used for with goods fixed connection's strap main part and along a side edge setting of strap main part, be used for with chain tooth fixed connection's chain tooth fixed part, at least one warp of chain tooth fixed part has at least one melting point and is less than the reinforcing yarn of plastic steel tooth shaping temperature.

Preferably, in the above-described fastener tape, the warp of the element fixing portion includes a band having a diameter larger than that of the warp of the tape main portion, and the band has at least one reinforcing yarn.

Preferably, in the above zipper tape, the tape rib includes a core yarn and an outer covering core yarn, and the core yarn and the outer covering core yarn are made of the same material and have different weaving manners.

Preferably, in the above-mentioned fastener tape, the reinforcing yarn is a yarn having a melting point of less than 180 °.

Preferably, in the above-mentioned fastener tape, the reinforcing yarn is a thermoplastic polyurethane elastomer rubber yarn.

Preferably, in the above fastener tape, the reinforcing yarn is a thermoplastic polyurethane elastomer rubber yarn having a melting point of 130 °.

Preferably, in the above-described fastener tape, the warp and the weft are woven by single-warp double-weft weaving.

Preferably, in the fastener tape, the warp and the weft of the tape main body portion are woven in a plain weave of one over one under the other; the warp and the weft of the fastener element fixing part are woven in a one-up-two-down weaving mode.

The invention provides a zipper cloth belt, which forms a weaving structure through warp yarns and weft yarns and comprises a cloth belt main body part and a zipper tooth fixing part. The cloth belt main body part is used for being fixedly connected with a product, the zipper tooth fixing part is arranged along one side edge of the cloth belt main body part and is used for being fixedly connected with the zipper tooth, and at least one warp yarn of the zipper tooth fixing part is provided with at least one reinforcing yarn with the melting point lower than the forming temperature of the plastic steel tooth.

By applying the zipper cloth belt provided by the invention, the warp yarns at the zipper tooth fixing parts are woven with the weft yarns, so that the warp yarns are partially positioned on the weft yarns and are exposed outside the zipper cloth belt, the warp yarns are called as fusion parts, and the weft yarns and the warp yarns are woven, and the parts positioned outside the warp yarns are called as blocking parts. When the zipper teeth of the zipper are subjected to injection molding, high temperature is transmitted to the warp yarn along with the injection molding material, and the reinforcing yarns at the welding positions are melted at high temperature, so that the reinforcing yarns are mutually fused with the material of the zipper teeth in a liquid state, and partial surfaces of the reinforcing yarns are welded together. The blocking part of the weft yarn is not subjected to morphological change due to high melting point, and is wrapped by the fused reinforcing yarns and the zipper teeth, so that the bonding force between the zipper teeth and the zipper cloth belt is enhanced. And because the reinforcing yarns on the warps can be melted only by high temperature, the reinforcing yarns at the warps between the zipper teeth are not directly subjected to high temperature, so that the fusion reaction can not occur, the characteristics of the yarns are kept, the whole zipper keeps softness, and the appearance of the whole zipper is the same as that of a conventional zipper product.

In order to achieve the second object, the present invention also provides an injection-molded slide fastener including any one of the fastener tapes described above. Because the zipper cloth belt has the technical effects, the injection molding zipper with the zipper cloth belt also has corresponding technical effects.

The invention also provides a preparation method of the injection molding zipper, which comprises the following steps:

placing any one of the zipper cloth belts in a zipper tooth mold cavity;

and injection molding the zipper teeth to fixedly connect the zipper teeth with the zipper teeth fixing part, wherein the reinforcing yarns are welded with the zipper teeth.

The preparation method of the injection molding zipper adopts the zipper cloth belt, so that the injection molding zipper has the technical effect corresponding to the zipper cloth belt.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view showing a structure of a fastener tape according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view showing a structure of a fastener tape according to another embodiment of the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic view showing a structure of a fastener stringer of an injection molded slide fastener according to an embodiment of the present invention.

The drawings are numbered as follows:

1: a zipper tape; 11: a first fixed part side warp; 12: a second fixed part side warp; 13: a main body part warp yarn; 14: a fixed part warp; 2: a fastener element fixing portion; 20: carrying out ribbing; 21: a core yarn; 22: wrapping core yarn; 23: a fusion part; 3: a tape main body portion; 30: a weft yarn; 31: a blocking portion; 40: a fastener element.

Detailed Description

The embodiment of the invention discloses a zipper cloth belt, which can weld zipper teeth and the cloth belt together, so that the binding force of the zipper teeth and the cloth belt is improved.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, fig. 1 is a schematic structural view of a zipper tape according to an embodiment of the present invention; fig. 2 is a top view of fig. 1. The fabric construction in fig. 1-2 is shown roughly for purposes of illustration, with the actual fastener tapes being formed of a more dense construction.

In one embodiment, the fastener tape 1 provided by the present invention forms a woven structure by warp and weft 30, including a tape main portion 3 and a fastener element fixing portion 2.

The cloth belt main body part 3 is used for being fixedly connected with a product, the product is a zipper mounting product such as clothes, the cloth belt main body part 3 is fixedly connected with the product, and the cloth belt main body can be sewn on the product. Specifically, the tape main portion 3 can be woven into a plain weave by the main portion warp 13 and the weft 30.

The element fixing portion 2 is provided along one side edge of the tape main body portion 3, and the element fixing portion 2 refers to a portion for fixed connection with an element, specifically, a portion injection-molded with an element. And at least one warp of the element fixing portion, that is, at least one of the fixing portion warps 14 is woven with a reinforcing yarn, and the number of the reinforcing yarns is at least one. If the warp yarns woven with the reinforcing yarns are referred to as reinforcing warp yarns, the reinforcing warp yarns have at least one reinforcing yarn. The melting point of the reinforced yarn is lower than the forming temperature of the plastic steel tooth. The number of the warp yarns specifically knitted with the reinforcing yarns can be set according to requirements, and the number of the reinforcing yarns possessed by the warp yarns can also be set according to requirements. The fixing portion warp 14 having the reinforcing yarn is partially located above the weft 30, exposed to the outside of the fastener tape 1, and referred to as a fused portion 23, and partially located below the weft 30, shielded from exposure by the weft 30, and referred to as a blocking portion 31 where the weft 30 is woven with the fixing portion warp 14 and located outside the fixing portion warp 14.

The melting point of the reinforcing yarn is lower than the molding temperature of the plastic steel teeth, and the molding temperature of the plastic steel teeth is generally 180-200 ℃, so that the reinforcing yarn can be a yarn with the melting point lower than 180 ℃, and the specific material can be selected according to the requirement, which is not limited specifically here. And correspondingly selecting corresponding reinforcing yarns according to different molding temperatures of the specific plastic steel teeth.

When the zipper cloth belt 1 provided by the invention is applied, when the zipper teeth 40 are injection molded, high temperature is transmitted to the fixing part warp 14 along with injection molding materials, and because the reinforcing yarns of the welding part 23 are melted by high temperature, the reinforcing yarns and the materials of the zipper teeth are mutually melted in a liquid state, and partial surfaces are welded together. The blocking portion 31 of the weft 30 is not changed in form due to its high melting point, and is wrapped by the fused reinforcing yarn and the fastener element, thereby enhancing the bonding force between the fastener element 40 and the fastener tape 1. And because the reinforcing yarn on the fixing part warp 14 can be melted only by receiving high temperature, the zipper teeth are continuously arranged on the cloth belt, and the reinforcing yarn at the fixing part warp 14 between the zipper teeth is not directly subjected to high temperature, so that the fusion reaction can not occur, and the characteristics of the yarn per se can be maintained, so that the whole zipper keeps the flexibility, and the appearance is the same as that of the conventional zipper product.

In another embodiment, please refer to fig. 3-4, fig. 3 is a schematic structural view of a fastener tape according to another embodiment of the present invention; fig. 4 is a top view of fig. 3. The fastener element fixing portion 2 has a ribbon 20 woven as a warp in the length direction of the fastener tape 1, that is, the fixing portion warp 14 includes the ribbon 20, the diameter of the ribbon 20 is larger than that of the warp of the tape main portion, and the ribbon 20 can be specifically set on the edge of the fastener element fixing portion 2 away from the tape main portion 3. The band 20 is woven as warp, so that the band 20 is partially located above the weft 30, exposed outside the fastener tape 1, and is a welded portion 23, and partially located below the weft 30, shielded by the weft 30 and not exposed, and the portion where the weft 30 is woven with the band 20 and located outside the band 20 is a stopper 31. As shown in fig. 4, when the rib 20 is woven as a warp and two ribs 20 are provided to face each other in the vertical direction, the welded portion 23 is a portion where the rib 20 is exposed outside the weft 30, and the stopper portion 31 is a portion where the weft 30 is exposed outside the rib 20. The diameter of the ribbon 20 is greater than the diameter of the warp of the main body of the strap, so that the limiting effect of the left and right directions on the zipper teeth 40 can be achieved, and meanwhile, the welding effect with the zipper teeth 40 is achieved through the arrangement of the reinforcing yarns, so that the zipper teeth 40 are more reliable to fix with the cloth belt.

Specifically, the reinforcing yarn is thermoplastic polyurethane elastomer rubber yarn, namely TPU yarn. The molding temperature of the plastic steel teeth is 180-200 ℃, and the reinforcing yarns can be thermoplastic polyurethane elastomer rubber yarns with the melting point of 130 ℃. Of course, other materials can be selected according to the requirement, or other TPU yarns with the temperature lower than the tooth forming temperature can be customized.

Further, the warp yarns and the weft yarns 30 are woven in a single-warp double-weft weaving manner. That is, the fastener tape 1 is woven by weft knitting with the weft yarn 30 by double weft (double pick) knitting to reciprocate a single yarn in the warp and the opening of the rib 20, and thus, the two yarns are aligned in one set.

As required, the tape main body portion 3 is woven in a plain weave with warp and weft threads woven one on top of the other, and the fastener element fixing portion 2 is woven in a plain weave with one on top of the other. That is, the weaving manner of the warp and the weft 30 of the tape main body portion 3 is plain weave of one over one under; the warp and weft 30 of the element fixing portion 2 are woven in a one-over-two-under weave. As shown in fig. 1-2, the warp yarns weave with the weft yarns 30 in the manner described above. The weaving manner of the fastener tape 1 is not limited to the above-described manner, and other conventional weaving manners in the prior art may be adopted as required, and will not be described here.

As shown in fig. 1-2, the left and right sides of the rib 20 are woven by the first fixed portion side warp 11 and the second fixed portion side warp 12, respectively, and the weft by double weft, i.e., by weaving up and down. The first and second fixed part side warps 11 and 12 and the band 20 used as the warp are woven with the weft 30 to form the first and second fixed part side warps 11 and 12. The diameters of the first fixing-portion-side warp yarns 11 and the second fixing-portion-side warp yarns 12 are the same as the diameter of the tape main portion warp yarns 13.

In the above embodiments, the band 20 includes the core yarn 21 and the covering core yarn 22, and the core yarn 21 and the covering core yarn 22 are made of the same material and woven in different manners. That is, the core yarn 21 and the covering core yarn 22 are made of the same material and are woven only in different manners, and the core yarn 21 and the covering core yarn 22 may be made of different materials and mixed-woven as required.

Based on the fastener tapes 1 provided in the above embodiments, the present invention also provides an injection-molded slide fastener including any one of the fastener tapes 1 in the above embodiments. Since the injection-molded slide fastener employs the fastener tape 1 in the above-described embodiment, the advantageous effects of the injection-molded slide fastener refer to the above-described embodiment.

The invention also discloses a preparation method of the injection molding zipper, and in a specific embodiment, the preparation method of the injection molding zipper comprises the following steps:

s1: the zipper cloth belt 1 in any one of the embodiments is placed in a zipper tooth mold cavity;

s2: and injection molding the zipper teeth to fixedly connect the zipper teeth with the zipper teeth fixing part 2 and strengthen the fusion of the yarns and the zipper teeth.

That is, the fastener element is injection-molded by using the fastener tape 1 of any of the above embodiments, and the fastener tape is injection-molded by using a mold having a cavity space corresponding to the shape of the fastener element 40 while sandwiching the fastener tape in the cavity, and a high temperature is transmitted to the fused portion of the warp yarn along with the injection material, and since the reinforcing yarn at the fused portion is melted by a high temperature, the reinforcing yarn and the material of the fastener element are fused with each other in a liquid state, and a part of the surface is fused together. The blocking portion 31 of the weft 30 is not changed in form due to its high melting point, and is wrapped by the fused reinforcing yarn and the fastener element, thereby enhancing the bonding force between the fastener element 40 and the fastener tape 1. And because the reinforcing yarn on the band 20 can be melted only by receiving high temperature, the zipper teeth are continuously arranged on the cloth belt, and the reinforcing yarn at the band 20 between the zipper teeth is not directly subjected to high temperature, so that the fusion reaction can not occur, and the characteristics of the yarn per se can be maintained, so that the whole zipper keeps the flexibility, and the appearance is the same as that of the conventional zipper product.

In conclusion, the zipper cloth belt 1, the injection molding zipper and the preparation method thereof provided by the invention utilize the characteristic of the woven structure of the cloth belt, so that the cloth belt and the zipper teeth 40 are effectively combined; the residual heat of the zipper teeth 40 in the original process is utilized to achieve the effect of fusion welding; the whole zipper is the same as that of the conventional product, but the binding force of the zipper teeth is high.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a zipper cloth belt, forms through warp and woof and weaves the tissue, its characterized in that, including be used for with goods fixed connection's strap main part and along a side edge setting of strap main part, be used for with chain tooth fixed connection's chain tooth fixed part, at least one warp of chain tooth fixed part has at least one melting point and is less than the reinforcing yarn of plastic steel tooth shaping temperature.

2. A fastener tape according to claim 1, wherein a tape rib having a diameter larger than that of the warp yarn of the tape main body portion is included in the warp yarn of the fastener element fixing portion, the tape rib having at least one of the reinforcing yarns.

3. The zipper tape according to claim 2, wherein the tape rib comprises a core yarn and an outer covering core yarn, and the core yarn and the outer covering core yarn are made of the same material and woven in different manners.

4. A fastener tape according to claim 1, wherein said reinforcing yarn is a yarn having a melting point of less than 180 °.

5. A zipper tape according to claim 4, wherein the reinforcing yarns are thermoplastic polyurethane elastomer rubber yarns.

6. A zipper tape according to claim 4, wherein the reinforcing yarns are thermoplastic polyurethane elastomer rubber yarns having a melting point of 130 °.

7. A fastener tape according to claim 1, wherein the warp and weft yarns are woven in a single warp and double weft weave.

8. The fastener tape according to any one of claims 1 to 7, wherein the warp and the weft of the tape main portion are woven in a plain weave of one over one under; the warp and the weft of the fastener element fixing part are woven in a one-up-two-down weaving mode.

9. An injection-molded slide fastener comprising fastener tapes which are arranged in pairs on the left and right, the fastener tapes comprising a fastener tape and a plurality of fastener elements, characterized in that the fastener tape is the fastener tape according to any one of claims 1 to 8, and the plurality of fastener elements are fixedly connected to the fastener element fixing portions by injection molding, and the reinforcing yarns are fused to the fastener elements.

10. A method for manufacturing an injection molded slide fastener, comprising:

placing the zipper cloth belt of any one of claims 1 to 8 in a zipper tooth mold cavity;

and injection molding the zipper teeth to fixedly connect the zipper teeth with the zipper teeth fixing part, wherein the reinforcing yarns are welded with the zipper teeth.

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