WO2012101919A1

WO2012101919A1 - Zipper chain with bottom stop and production method for said zipper chain

Info

Publication number: WO2012101919A1
Application number: PCT/JP2011/078810
Authority: WO
Inventors: 明友廣; 稔正小中; 新太郎大杉; 賢志荻生
Original assignee: Ykk株式会社
Priority date: 2011-01-26
Filing date: 2011-12-13
Publication date: 2012-08-02
Also published as: KR20130094855A; US20130305499A1; CN103338672A; TWI459915B; EP2668865A1; KR101508453B1; ES2646962T3; CN103338672B; JP5731546B2; TW201236596A; EP2668865B1; JPWO2012101919A1; EP2668865A4

Abstract

Provided are: a zipper chain with a bottom stop, capable of increasing the reinforcing strength of the bottom stop attachment section without using reinforcing tape and capable of preserving aesthetics; and a production method for the zipper chain. The zipper chain with the bottom stop has, at the attachment sites for the bottom stop (106), reinforcing sections (107a, 107b) that are impregnated with curable adhesives (205, 308, 402) and cured, and have a misalignment strength therein of 100 N min. The production method for the zipper chain with the bottom stop includes: a step (A) that prepares the zipper chain having a plurality of inter-element gaps; a step (B) that attaches the bottom stop to each inter-element gap; a step (C) that impregnates each inter-element gap, before or after the step (B), with a curable adhesive having a viscosity of 100-2,000 mPa·S; and a step (D) that cures the curable adhesive impregnated into the inter-element gaps in the step (C).

Description

Fastener chain with separation fitting and method for manufacturing the fastener chain

The present invention relates to a fastener chain with a separation / insertion tool and a method for manufacturing the fastener chain.

A break-and-fit insert that allows connection and separation of the fastener chain may be attached to the end of the slide fastener. The open / close insertion tool is generally composed of a box bar, a box body, and a butterfly bar, which are connected to the lower end of the dentition row of the fastener chain. In a slide fastener with a separation / insertion tool, a portion of the fastener tape to which the separation / insertion tool is attached is reinforced to prevent breakage of the tape. Conventionally, it has been common to reinforce by attaching a reinforcing tape made of plain weave fiber (taffeta tape) or a transparent synthetic resin film, and then attaching a separable fitting.

However, there are problems that the material cost of the reinforcing tape is relatively high and the product cost increases, and that the sticking portion of the reinforcing tape is rigid, so that needle breakage is likely to occur during sewing. Also, with transparent synthetic resin films, there is a problem that the film partially peels off during repeated washing and drying, and the peeled parts become cloudy. The colors available for taffeta tape are limited, and the color of the fastener tape There is a problem that the same color may be remarkably inferior depending on the number.

Under such a background, a method for reinforcing a fastener tape without using a reinforcing tape has been proposed. For example, in Japanese Patent Laid-Open No. 6-189811, in a manufacturing process of a slide fastener chain with a separation / insertion tool that sequentially forms and integrates a dentition and a separation / insertion tool on a continuously supplied fastener tape, Following the step of forming the engagement dentition and the separation / insertion tool, a fiber hardening agent is sequentially impregnated and fixed around the separation / insertion tool forming portion of the fastener tape. A method for continuously reinforcing the end of the fastener tape is disclosed. In Japanese Patent Laid-Open No. 6-245806, the fastener chain in the hidden slide fastener is formed by removing the fastener element at the portion corresponding to the opening portion to form a space portion, and the synthetic resin liquid penetrates the entire tape of the space portion. After the tape is thermoformed and cured so that the opposite edge of the tape is inverted in a U-shape, the tape is cut in the space portion, and the hinge pin of the synthetic resin-type separable fitting insert on one tape edge Is attached to the fastener element by injection molding, and a receiving member is attached to the other tape edge, and is attached to the fastener element and attached by injection molding. A method is disclosed.

JP-A-6-189811 JP-A-6-245806

As described above, there are prior art documents that disclose that the reinforcement of the fastener tape should be achieved by impregnation and curing with a synthetic resin liquid or a fiber curing agent. Has not been fully optimized, and there is room for improvement, such as the product performance being impaired due to fraying of the reinforcing part, or the appearance of the plastic tape being blurred when the plastic resin liquid is impregnated. there were. Accordingly, an object of the present invention is to provide a fastener chain with a break-and-fit insert that can enhance the reinforcing force of the attachment portion of the break-and-insert insert without using a reinforcing tape and can maintain an aesthetic appearance. Moreover, this invention makes it another subject to provide the manufacturing method of the said fastener chain.

The present inventor conducted extensive research to solve the above-mentioned problems, and found that the optimal misalignment strength was found to improve fraying of the reinforcing portion. In addition, the present inventors have found that it is effective to impregnate a curable adhesive having a viscosity in a specific range into an attaching portion of a detachable fitting in a fastener tape, and then to cure, thereby completing the present invention.

In one aspect, the present invention provides a pair of fastener tapes, a fastener element row attached to opposite side edges of the fastener tape, and a separation attached to an end portion of the fastener tape connected to the element row. A fastener chain with a break-off insert, provided with a fitting insert, wherein the fastener chain has a reinforcing portion impregnated and hardened with a curable adhesive at least at the attachment site of the break-off insert. A fastener chain with a separable insertion insert whose misalignment strength of the reinforcing portion is 100 N or more.

In one embodiment of the fastener chain with a break-and-insert insert according to the present invention, the curable adhesive has a viscosity of 100 to 2000 mPa · S when impregnated into the fastener tape.

In another embodiment of the fastener chain with a separation / insertion tool according to the present invention, the curable adhesive is a two-component curable adhesive.

In still another embodiment of the fastener chain with a release fitting according to the present invention, the weight of the curable adhesive present in the reinforcing portion per 1 m ² of the fastener tape is 50 to 300 g (dry weight).

In another aspect of the present invention, a process A for preparing a fastener chain having a plurality of element intermittent parts, a process B for attaching a separation / fitting insert to each element intermittent part, and each element before or after the process B It is a manufacturing method of the fastener chain with a break-and-fit insertion tool including the process C which impregnates a curable adhesive in an intermittent part, and the process D which hardens the curable adhesive impregnated in the element intermittent part by the process C.

In one embodiment of the method for manufacturing a fastener chain according to the present invention, the viscosity of the curable adhesive in Step C is 100 to 2000 mPa · S.

In another embodiment of the method for manufacturing a fastener chain according to the present invention, the step C masks the fastener chain by supplying masking members sequentially from the direction intersecting the conveyance direction of the fastener chain that is continuously conveyed. It carries out in the state performed.

In yet another embodiment of the method for producing a fastener chain according to the present invention, the masking member is a polygonal or circular cylindrical member that sequentially rotates at regular intervals with the central axis as the rotation axis, An opening is formed on the side surface, and in step C, the fastener chain is conveyed in a direction from one bottom surface of the member to the other bottom surface so that the element intermittent portion passes inside the side surface, and masking is performed intermittently. When the part passes through the side surface, the adhesive is supplied from the outside toward the opening formed in the side surface.

In yet another embodiment of the fastener chain manufacturing method according to the present invention, each time the element intermittent portion is sent with the fastener chain being conveyed, the masking member is rotated so that the openings that are sequentially different in masking are formed. Implemented.

In yet another embodiment of the fastener chain manufacturing method according to the present invention, each opening of the masking member is adhered to the periphery of the opening between the end of masking and the next masking. Is removed.

In yet another embodiment of the method for manufacturing a fastener chain according to the present invention, the masking member is formed with an opening for masking that is sequentially fed out by an unwinding / winding device having an unwinding portion and a winding portion. In step C, the fastener chain is conveyed so that the intermittent element portion passes under the masking tape moving between the unwinding portion and the winding portion.

In yet another embodiment of the fastener chain manufacturing method according to the present invention, the curable adhesive is a two-component curable adhesive.

In yet another embodiment of the method for manufacturing a fastener chain according to the present invention, step C is performed on a pre-warmed fastener chain.

In yet another embodiment of the method for manufacturing a fastener chain according to the present invention, after step C, a heating press is performed on the fastener chain.

In still another embodiment of the method for producing a fastener chain according to the present invention, the weight of the curable adhesive impregnated in the element intermittent portion per 1 m ² of the fastener tape is 50 to 300 g (dry weight).

According to the present invention, it is possible to obtain a fastener chain with a break-and-fit insert that can enhance the reinforcing force of the attachment portion of the break-and-insert insert and maintain the aesthetic appearance without using a reinforcing tape.

It is a front view which abbreviate | omits and shows a part of fastener chain with a separation fitting insert which concerns on one Embodiment of this invention. It is the schematic for demonstrating the measuring method of misalignment intensity | strength. It is the schematic which shows an example of a polygonal cylindrical masking member. It is the figure which expanded the opening part of the masking member of polygonal cylinder shape. It is the schematic which shows an example of a tape-shaped masking member. It is the figure which expanded the opening part of the tape-shaped masking member. It is the schematic which shows an example of the conveying apparatus of a fastener chain.

<1. Fastener chain with open fitting insert>
Hereinafter, the fastener chain with a separation / insertion tool of the present invention will be specifically described with reference to the drawings. In the present invention, the sliding direction of the slider is the vertical direction, the direction in which the slider slides so as to engage the element rows is upward, and the direction in which the slider slides to separate the element rows is downward.

FIG. 1 is a front view of a slide fastener 100 obtained by attaching a slider 102 to a fastener chain 101 with a separation / insertion tool according to the present invention. The fastener chain 101 with the separation / insertion tool includes a fastener tape 103, a row of fastener elements 104, an upper stopper 105, and a separation / insertion tool 106. Reinforcing

portions

107a and 107b are provided at the lower end and the upper end of the fastener tape 103, respectively. The fastener tapes 103 are paired, and each of the fastener tapes 103 with a row of fastener elements 104 attached thereto is called a fastener stringer.

Each fastener tape 103 is woven or knitted from synthetic fibers or natural fibers, and is formed of a plurality of fastener elements 104 that can be engaged or separated by the slider 102 along the longitudinal edge thereof. A row of is attached. There is no limitation on the type of element 104, and there are conventionally known elements such as a single element typified by a metal element and a resin element injection-molded on a tape, and a continuous element typified by a coiled resin element. Either may be used. The slider 102 can mesh or separate the rows of the fastener elements 104 by sliding while inserting the rows of the fastener elements 104 therein. The upper stopper 105 is a part for preventing the slider from dropping off, and is connected to the upper end of the fastener element 104 row and fixed to the end edge of the fastener tape by caulking or injection molding.

The opening / closing insert 106 is attached to the lower end portion of the fastener tape 103 so as to be connected to the lower end of the row of the fastener elements 104. The open / close insert 106 is known per se as described in, for example, Japanese Patent Laid-Open Nos. 6-189811 and 6-245806, and any open / close insert known to those skilled in the art can be used. Use it. In general, the opening / closing insert 106 is composed of a box bar 106a, a butterfly bar 106b, and a box body 106c. The box bar 106a and the butterfly bar 106b are attached to the edge of the fastener tape 103 so as to face each other. The box body 106c is inserted and inserted from the lower end of the box bar 106a, and is fixed to the box bar 106a. The box 106c has an insertion hole (not shown) for inserting the butterfly stick 106b, and the lower end of the fastener chain can be connected and separated by inserting and removing the butterfly stick 106b from the box 106c. it can. In this embodiment, the box bar 106a and the box body 106c are formed as separate bodies and the both are locked and fixed. However, the box bar 106a and the box body 106c can be integrally formed.

In this embodiment, the separation / insertion tool is attached only to the lower end portion of the slide fastener. However, another embodiment according to the present invention is described in, for example, Japanese Patent Application Laid-Open No. 2005-245859. As described above, a reverse fastener made of a box bar and a butterfly stick can be used as a separation / insertion tool, and two sliders can be arranged at the bottom to make a slide fastener that can be reversely opened.

In the fastener tape 103, a reinforcing portion 107a in which a curable adhesive is impregnated and hardened is provided at an attachment site of the separation fitting 106. Further, in the present embodiment, the reinforcing portion 107 a is provided not only at the attachment portion of the separation / insertion tool 106 but also across the entire width of the fastener tape 103 from the upper end of the separation / insertion tool 106 to the lower end of the fastener tape 103. Yes. Thus, the high reinforcement effect with respect to the fastener tape 103 is acquired by providing the reinforcement part 107a over the whole width | variety of the fastener tape 103. FIG. It is not necessary for the upper end of the reinforcing portion 107a to coincide with the upper end of the split fitting insert 106. The upper end of the open / close insert 106 may be extended beyond the upper end of the open / close insert 106 and may not reach the upper end of the open / close insert 106. However, if the range of the reinforcing portion extends excessively to the element row, the smooth opening / closing operation of the fastener is hindered. On the other hand, if it is too short in the vertical direction, the desired strength cannot be obtained. A typical range is 5 to 100 mm upward from the lower end of the fastener tape 103.

In addition, a reinforcing portion 107 b can be provided on the upper end portion of the fastener tape 103. Thereby, fraying of the thread | yarn of the upper end part of the fastener tape 103 can be prevented.

The curable adhesive reinforces the fastener tape 103 by curing after impregnation into the fastener tape 103. If the misalignment strength is too low, fraying from the cut surface is likely to occur, and the reinforcing portion becomes soft, so that the operability of the separation / insertion tool also deteriorates. Therefore, the misalignment strength of the reinforcing portion is preferably 100 N or more. However, if the misalignment strength is excessively increased, fraying is improved, but the reinforcing portion becomes too hard and the operability of the separation / insertion tool is deteriorated. Further, there is a possibility that the reinforcing portion is broken or sewing becomes difficult. From such a viewpoint, the misalignment strength of the reinforcing portion is more preferably 300 N or less.

The method for measuring misalignment strength in the present invention will be described. When a needle is inserted into the fastener tape and a downward tensile load is applied gradually, the fastener tape will eventually be unable to withstand the load, and at some point the fiber eye at the point where the needle is inserted will open downward (misalignment). . At this time, the limit strength that can be sustained without causing misalignment is the misalignment strength. Since the stress rapidly decreases at the moment when the eyes open, the misalignment strength can be easily measured from the stress-strain curve.

Next, specific measurement conditions for misalignment strength in the present invention will be described. Parts such as the opening / closing insertion tool, the top stopper, the element row, and the slider are removed from the fastener chain so that only two separated fastener tapes 103 are provided. Next, as shown in FIG. 2, the lower end of the fastener tape 103 is cut out so that the length in the vertical direction is 80 mm and the width is about 14 mm, and this is used as a test piece. From the lower end of the fastener tape, a needle 110 having a J-shaped tip and a diameter of 1 mm (in the example, “Beha 78.75B10 / 3: manufactured by Organne Needle Co., Ltd.”) is applied to the reinforcing portion 107a impregnated and cured with the curable adhesive. Insert the first needle 3mm above the edge where the element row was not attached from the edge that is not attached to the opposite edge, and insert two needles 3mm toward the opposite edge. Inserted at equal intervals, using a tensile tester (in the example, “INSTRON.5565: manufactured by INSTRON”) is used to hold a region of 30 mm downward from the upper end of the fastener tape and further hold three needles ( Pulling downward at a speed of 200 mm / min at a distance of 70 mm between the upper and lower gripping portions. In FIG. 2, a region surrounded by a dotted line is a grip portion 111, which is gripped by an air clamper or the like. Since the maximum stress until misalignment occurs is obtained from the stress-strain curve, this is defined as misalignment strength. The test is performed four times in total, two times for each fastener tape, and the average value is taken as the misalignment strength for the fastener chain.

The viscosity when the curable adhesive is impregnated into the fastener tape is important in obtaining desired misalignment strength and aesthetics. If the viscosity is too small, bleeding occurs at the time of impregnation, the impregnation is not performed at a predetermined position, and the appearance is deteriorated. Further, since the adhesive component is excessively diluted with a solvent, the adhesive component remaining in the fastener tape after curing is insufficient, and a desired misalignment strength cannot be obtained. On the other hand, if the viscosity is too large, the adhesive is not impregnated to the inside of the fastener tape, so that a desired misalignment strength cannot be obtained. From such a viewpoint, the viscosity when the curable adhesive is impregnated into the fastener tape is preferably 100 to 2000 mPa · S, and more preferably 200 to 700 mPa · S.

In the present invention, the viscosity is measured using a BM viscometer (in the examples, “manufactured by Tokyo Keiki Co., Ltd.”), and the attached rotor is No. 2, the rotation speed is set to 30 rpm, and the temperature is set to 25 ° C.

From the viewpoint of obtaining a desired misalignment strength, it is preferable that the weight of the curable adhesive existing in the reinforcing portion per 1 m ² of the fastener tape is large, but if the amount is too large, the reinforcing portion becomes too hard. (Dry weight) is preferable, and 70 to 200 g (dry weight) is more preferable.

If the reinforcing portion is too thick, firstly, the operability of the separation / insertion tool is deteriorated, secondly, the reinforcing portion is cracked, and thirdly, it is difficult to sew to other fabrics. . On the other hand, if it is too thin, first, the operability of the separation / insertion tool is deteriorated. Second, fraying of the end portion is likely to occur. Therefore, the thickness of the reinforcing portion after the curable adhesive is cured and dried is preferably in the range of 100 to 200% when the original fabric thickness is 100%.

The curable adhesive to be used is not particularly limited, and any known curable adhesive can be used. For example, a one-component curable adhesive, a two-component curable adhesive, an instantaneous adhesive, a hot-melt adhesive, an emulsion-based adhesive, and a light (ultraviolet or electron beam) curable adhesive can be used. Among these, a one-component curable adhesive and a two-component curable adhesive are preferable from the viewpoints of cost, reinforcing power, workability, and quality. One-part curable adhesives have a large amount of solvent, so drying time is slightly longer, and penetration to the back surface is slightly inferior to two-part curable adhesives, but they prevent fraying due to product appearance, washing and drying. And an excellent effect in improving misalignment strength. Although the two-component curable adhesive is somewhat inferior to the one-component curable adhesive due to washing and drying, the two-component curable adhesive exhibits an excellent effect in improving the appearance of the product and misalignment strength. Examples of the one-component adhesive and the two-component adhesive include polyurethane, epoxy, and acrylic. Two-component adhesives typically can use polyols, esters, ether-based polyols, and acrylics as the main agent, and aromatic / aliphatic isocyanates, epoxies, melamines, oxazolines, aziridines, carbodiimides, etc. as curing agents can do. In increasing the misalignment strength, it is effective to increase the content of the curing agent relative to the main agent.

There are no particular restrictions on the adhesive diluent, and any known diluent may be used, but generally an organic solvent such as toluene, alcohols, methyl ethyl ketone (MEK), ethyl acetate, dimethylformamide or the like is used. Can increase the drying efficiency. In particular, toluene, alcohols, and methyl ethyl ketone are preferable because they are less toxic and easy to control drying. The diluent may be used in such an amount that the viscosity at the time of impregnation coating on the element intermittent portion of the fastener tape is in the above-described range.

<2. Manufacturing method of fastener chain with separation fitting>
Next, the manufacturing method of the fastener chain with a separation fitting insert according to the present invention will be specifically described with reference to the drawings.

In one embodiment, a method for manufacturing a fastener chain with a separation / insertion tool according to the present invention includes a step A for preparing a fastener chain having a plurality of element intermittent portions, and attaching a separation / insertion tool to each element intermittent portion. Separation fitting including Step B, Step C in which each element intermittent portion is impregnated with the curable adhesive before or after Step B, and Step D in which the curable adhesive impregnated in the element intermittent portion in Step C is cured It is a manufacturing method of the fastener chain with an insertion tool.

In step A, a fastener chain having a plurality of element intermittent portions is prepared. This is, for example, an element formed by removing a fastener element at a place where a break-fitting insert is to be attached to a long fastener chain in which a pair of fastener stringers are engaged with each other and combined. It is obtained by forming a plurality of intermittent portions. Moreover, when attaching an element to a fastener tape, you may form an element intermittent part by providing the location which does not attach an element from the beginning.

In step B, a separation / insertion tool is attached to each element intermittent portion. The separable insertion tool can be attached by, for example, attaching a synthetic resin material or metal by injection molding, or bending a metal plate and caulking the tape. Step B can be performed after the reinforcement portion is formed, or can be performed before the reinforcement portion is formed.

In step C, each element intermittent portion is impregnated with a curable adhesive having a viscosity of 100 to 2000 mPa · s, for example. Step C can be performed before or after step B. The process C can be performed in a state where masking members are sequentially supplied from the direction intersecting the conveying direction of the fastener chain that is continuously conveyed to mask the fastener chain. As a result, the element intermittent portion of the curable adhesive can be continuously impregnated, and a desired region can be impregnated accurately.

The masking member can be, for example, a polygonal cylindrical member 201 that sequentially rotates at regular intervals with the central axis as a rotation axis, as shown in FIG. In FIG. 3, the masking member has an octagonal shape, but is not limited thereto. The member 201 has an opening 202 formed on the side surface, and in the step C, the fastener chain 203 is directed from one bottom surface of the member toward the other bottom surface so that the element intermittent portion 204 passes inside the side surface ( The masking is performed by supplying the adhesive 205 from the outside to the opening 202 formed on the side surface by the dispenser 208 when the element intermittent portion 204 passes the side surface. carry out. FIG. 4 is an enlarged view of the opening 202 of the polygonal cylindrical member 201 in the present embodiment. Here, the opening 202 is rectangular, but the shape of the opening is masked at the portion to be masked. There is no particular limitation as long as the adhesive is supplied to the portion to be impregnated with the adhesive. That is, FIG. 3 illustrates a masking member in which a plurality of openings 202 are provided in one polygonal cylinder, but for example, a pair of polygonal cylinders are spaced apart in the front and rear directions of the fastener chain. By arranging and rotating the pair of cylinders in synchronization, the space between the cylinders can be used as an opening. Further, the masking member may be a circular cylinder instead of a polygonal cylinder.

The masking member 201 is rotated after masking is performed on a plurality of (for example, 2 to 4) element intermittent portions 204, and the opening 202 on the adjacent side surface is rotated to be used for the next impregnation operation. Can do. Alternatively, each time the element intermittent portion 204 is sent along with the conveyance of the fastener chain 203, the masking member may be rotated so that the masking is sequentially performed using the openings 202 that are sequentially different.

It is preferable that the adhesive 205 attached to the periphery of the opening 202 is removed between the end of masking and the next masking. This is because excess adhesive 205 is deposited around the opening 202 due to repeated masking and may adhere to unnecessary portions of the fastener tape. As a method for removing the adhesive, the adhesive is blown off by the wind force of the blower, the adhesive is sucked by a vacuum, immersed in a cleaning tank 206 containing a cleaning liquid such as an organic solvent, or the cleaning liquid is sprayed. And a method of wiping with a wiping tool 207 such as a scraper, a brush or a brush. It is possible to combine a plurality of these operations, and it is possible to sequentially perform different adhesive removal steps as the masking material rotates.

Alternatively, the masking member may be, for example, a mask in which an opening 303 for masking is sequentially formed by an unwinding / winding device 300 having an unwinding portion 301 and a winding portion 302 as shown in FIG. In step C, the fastener chain 306 is conveyed in the direction of the arrow in the figure so that the element intermittent portion 304 passes under the masking tape 305 that moves between the unwinding portion and the winding portion. Masking is performed by supplying the adhesive 308 from above with the dispenser 307 toward the opening 303 when the element intermittent part 304 passes under the opening 303. FIG. 6 is an enlarged view of the opening 303 in the present embodiment. Here, the band-shaped opening 303 is formed by a pair of masking tapes that run in parallel, but the shape of the opening should be masked. There is no particular limitation as long as the portion is masked and the adhesive is supplied to the portion to be impregnated with the adhesive. For example, it is not always necessary to prepare a pair of masking tapes 305. For example, a plurality of openings may be provided in one masking tape, and the fastener tape may be masked for each opening.

Process C is preferably performed on a pre-warmed fastener chain. Thereby, the drying rate of the adhesive impregnated in the element intermittent portion can be increased, and the productivity is improved. If the heating condition is too high, the drying is quick and the adhesive does not completely penetrate into the fastener tape. On the other hand, if it is too low, drying takes time, so 30 to 80 ° C is preferable, and 40 to 60 ° C is more preferable.

After step C, step D is performed to cure the curable adhesive impregnated in the element intermittent portion in step C. The curing means varies depending on the adhesive used, but may be cured by heating, irradiation with light such as ultraviolet rays or electron beams, or may be cured by reacting with moisture in the air. Like a two-component adhesive, it may be cured at room temperature by mixing the main agent and a curing agent.

After the process C, before or after the process D, or simultaneously with the process D, the fastener chain can be hot-pressed. Thereby, the effect of smoothing the surface or deeply impregnating the adhesive into the fastener tape is obtained.

FIG. 7 shows an example of a fastener chain conveying device 400 for carrying out the process C. The fastener chain transport device 400 includes a coating unit, a first drying unit, and a second drying unit. A long fastener chain 401 having a plurality of element intermittent portions is conveyed rightward in the drawing by a plurality of feed rollers (not shown) that are controlled and driven, and a curable adhesive 402 is dispensed at a coating portion. 403 is supplied to the element intermittent portion. Examples of the method for supplying the adhesive 402 include spraying, tampo printing, screen printing, gravure, ink jet, roll, die, and the like, but spraying is easy because the coating amount and coating width can be easily controlled and processing can be performed in a short time. preferable. In particular, it is preferable to use a dispenser that dispenses a liquid accurately and accurately in a spray. A liquid reservoir 404 is installed below the dispenser 403 so that the adhesive 402 scattered from above can be collected. The fastener chain 401 exiting the coating part is dried in the dryer 405 of the first drying part. The first drying section is movable, and moves back and forth in the transport direction by setting the required drying amount. After that, it is stored in the storage box 406, but can be further dried by the dryer 407 of the second drying section, if necessary. The curable adhesive is usually cured in the first drying section and, if necessary, in the second dryer. However, in an adhesive that requires specific means for curing, such as a photo-curable adhesive, A process can be provided separately. Exhaust equipment 408 such as a fan is installed in the coating unit, the first drying unit, and the second drying unit.

After forming the reinforcing portion in this way, cutting the fastener tape at the lower end of the reinforcing portion, and appropriately performing finishing steps such as attaching the separation fitting, attaching the top stopper, and attaching the slider. A slide fastener can be completed. It is also possible to perform the finishing process before forming the reinforcing portion.

Hereinafter, examples for better understanding of the present invention and its advantages will be described, but the present invention is not limited to these examples.

<Measuring method of various characteristics>
Product appearance (bleeding, back surface permeability), white turbidity and fraying after industrial washing and drying, which were evaluation items in the examples and comparative examples, were evaluated according to the following criteria. (1) and (2) were evaluated by appearance inspection after coating (after impregnation and drying), and (3) and (4) were evaluated by appearance inspection after industrial washing and drying.
(1) Blur ◎: No blur (coating edge is straight)
○: Edge part is slightly wavy, not completely straight XX: Over target coating width, edge is wavy (2) Back side permeability ◎: Back side impregnated part is equivalent to the surface (coating side) Wet and the same color on the front and back sides ○: There are places where the color of the impregnated part on the back is slightly thinner than the front surface ×: There are places where the back surface is not wet XX: None: Slightly (less than 1/6 of the area) △: Slightly (1/6 or more and less than 1/4) ×: Slightly (1/4 or more and less than 1/3) XX: Quite (1 / 3 or more) Yes (4) Fraying ◎: Nothing at all ○: Fluffing △: One weft fraying (missing)
×: Fraying 2 to 3 wefts (missing)
XX: Fray more than 4 wefts

The misalignment strength was measured by the measurement method described above. INSTRON. As a tensile tester. 5565: The product made by INSTRON was used.

The viscosity of the adhesive was measured using a BM viscometer manufactured by Tokyo Keiki Co., Ltd. under conditions of a temperature of 25 ° C., a No. 2 rotor, and a rotation speed of 30 rpm.

<Example 1A>
Ester urethane polyol (manufactured by Nippon Synthetic Chemical Industry) / hexamethylene diisocyanate (HDI, trade name: Coronate HL Nippon Polyurethane Industry) = 86/14 were mixed and stirred with toluene as a diluent, in the above-mentioned mass ratio of solids. A two-component curable adhesive solution having a viscosity of 250 mPa · s (25 ° C.) was prepared by diluting so that the mass ratio of the two kinds of resins / diluents was 62/38.

On the other hand, a long fastener tape having a width of about 14 mm and a tape thickness of about 0.53 mm prepared by weaving a tape made of polyester and having a thread thickness of 330 T is prepared, and then the length per element intermittent portion is 30 mm. An element was attached to the fastener tape so that a pair of the elements was prepared and a fastener chain was prepared.

The obtained fastener chain with an intermittent element portion is continuously supplied by a conveying device, and a masking material having an opening area of 30 mm × 12 mm in a rectangular shape is used to apply a coating amount of 170 g / m to the intermittent element portion. ² (Dry weight) was impregnated with the solution of the two-component curable adhesive through a spray dispenser (trade name: 781-SS-46F EDF). The coating conditions were an atomizing air pressure of 0.035 MPa and a clearance of 10 mm.

Next, after drying at 90 ° C. for 5 seconds, the adhesive was cured by aging at 55 ° C. for 1 day to form a reinforcing portion. The thickness of the reinforcing part was 0.7 mm. Thereafter, the reinforcing portion was cut with a push cutting blade, and the separation fitting was attached to the reinforcement by injection molding to obtain a fastener chain with a separation fitting.

<Example 1B>
A fastener chain with a split fitting insert was produced in the same procedure as in Example 1A, except that the coating amount on the element intermittent portion was 170 g / m ² (dry weight).

<Example 2>
Using the same two types of resin and diluent as in Example 1, two-component curing with a viscosity of 500 mPa · s (25 ° C.) by diluting so that the mass ratio of the two types of resin / diluent becomes 72/28. A mold adhesive solution was prepared. Then, the fastener chain with a split fitting insert was produced according to Example 1 except that the atomizing air pressure of the dispenser was increased to 0.07 MPa. The thickness of the reinforcing part was 1.1 mm.

<Example 3>
A mixed solvent of toluene / isopropyl alcohol (IPA) = 50/50 (mass ratio) is used as a diluent for polycarbonate polyurethane (NE8811, manufactured by Dainichi Seika Kogyo), and the mass ratio of resin / diluent becomes 24/76. Thus, a one-pack type adhesive solution having a viscosity of 300 mPa · S (25 ° C.) was prepared. Then, the same fastener chain with an element intermittent part as Example 1 was prepared, and the coating amount was 85 g / m ² (dry weight) using a rectangular masking material having an opening area of 30 mm × 12 mm. The solution of the one-part curable adhesive was impregnated and applied to the intermittent part of the element through a spray dispenser (trade name: 781-SS-46F Saneitec Co., Ltd.). The coating conditions were an atomizing air pressure of 0.035 MPa and a clearance of 10 mm. The thickness of the reinforcing part was 0.85 mm. Next, after drying at 90 ° C. for 10 seconds, a fastener chain with a split-fitting insert was obtained in the same procedure as in Example 1.

<Example 4>
Two-component curable adhesive composition having a viscosity of 100 mPa · s (25 ° C.) diluted with toluene as a diluent so that the mass ratio of the same two resins / diluting solvents as in Example 1 is 51/49 A fastener-opened product was prepared in accordance with Example 1 except that the solution was prepared.

<Comparative Example 1>
Using the same two types of resin and diluent as in Example 1, two-component curing with a viscosity of 15 mPa · s (25 ° C.) by diluting so that the mass ratio of the two types of resin / diluent becomes 26/74 A mold adhesive solution was prepared. Then, the fastener chain with a separation fitting insert was produced in the same procedure as Example 1. The thickness of the reinforcing part was 0.53 mm.

<Comparative Example 2>
As reference values, the fastener tape fabrics used in Examples 1 to 4 and Comparative Example 1 were observed for the frayed state of cut products and measured for misalignment strength with the adhesive not applied.

The results are shown in Table 1. In an example using an adhesive having an appropriate viscosity, the product appearance was good, there was no cloudiness or fraying after industrial washing and high-temperature drying, and the misalignment strength was high. On the other hand, in Comparative Example 1, since the viscosity was too low, bleeding, fraying after industrial washing and high-temperature drying, and misalignment strength were inferior to those of Examples. Moreover, even if each comparative example is compared with the comparative example 2 given as a reference value, the practical use of the curable resin of the present invention is about 20 times for the example 1 and about 17 times for the example 2. It was found that the example 3 had a high misalignment strength of about 18 times and the example 4 about 14 times.

DESCRIPTION OF SYMBOLS 100 Slide fastener 101 Fastener chain 102 with a separation fitting insert Slider 103 Fastener tape 104 Element 105 Top stopper 106 Separation fitting 106a Box rod

106b Butterfly rod

106c Box body

107a Reinforcement part

107b Reinforcement part 110 Needle 111 Holding part 201 Masking Member 202 Opening 203 Fastener chain 204 Element intermittent part 205 Adhesive 206 Cleaning tank 207 Wiping tool 208 Dispenser 300 Unwinding / winding device 301 Unwinding part 302 Winding part 303 Opening 304 Element intermittent part 305 Masking member (masking tape) )
306 Fastener chain 307 Dispenser 308 Adhesive 400 Fastener chain transport device 401 Fastener chain 402 Adhesive 403 Dispenser 404 Liquid storage 405 Dryer 406 Storage box 407 Dryer 408 Exhaust equipment

Claims

A pair of fastener tapes (103), fastener element (104) rows attached to opposite side edges of the fastener tape, and attached to the end portions of the fastener tape (103) connected to the element rows A fastener chain (101) with a separation / insertion tool (106) provided with a separation / insertion tool (106), wherein the fastener chain is attached to at least the separation / insertion tool (106) of the fastener tape (103). A fastener chain with a separable fitting that has reinforcing portions (107a, 107b) impregnated and hardened with a curable adhesive (205, 308, 402), and the reinforcing portion has a misalignment strength of 100 N or more.
The fastener chain with a split-fit insert according to claim 1, wherein the curable adhesive (205, 308, 402) has a viscosity of 100 to 2000 mPa · S when impregnated into the fastener tape (103).
The curable adhesive (205, 308, 402) is a two-component curable adhesive, and a fastener chain with a break-and-fit insert according to claim 1 or 2.
The weight of the curable adhesive (205, 308, 402) present in the reinforcing portion (107a, 107b) per 1 m 2 of the fastener tape is 50 to 300 g (dry weight). Fastener chain with open fitting insert.
Step A for preparing a fastener chain (203, 306, 401) having a plurality of element intermittent portions (204, 304), and a step for attaching a separation / insertion tool (106) to each element intermittent portion (204, 304). B, Step C of impregnating each element intermittent part (204, 304) before or after Step B with a curable adhesive (205, 308, 402), and curable adhesive impregnated in the element intermittent part by Step C (205, 308, 402) The manufacturing method of the fastener chain with a separable fitting insert including the process D which hardens | cures.
6. The method for producing a fastener chain with a release fitting according to claim 5, wherein the viscosity of the curable adhesive (205, 308, 402) in Step C is 100 to 2000 mPa · S.
In step C, the masking members (201, 305) are sequentially supplied from the direction intersecting the conveying direction of the fastener chains (203, 306, 401) that are continuously conveyed to the fastener chains (203, 306, 401). The manufacturing method of the fastener chain with a separation fitting insert of Claim 5 or 6 implemented in the state which performed masking.
The masking member (201) is a polygonal or circular cylindrical member that sequentially rotates at a constant time with the central axis as a rotation axis, and the member (201) has an opening (202) on the side surface. In step C, the fastener chain (203) is conveyed in a direction from one bottom surface to the other bottom surface of the member so that the element intermittent portion (204) passes inside the side surface, and masking is performed in the element intermittent portion (204). The fastener chain with a break-and-fit insert according to claim 7, wherein the adhesive chain (205) is supplied from the outside toward the opening (202) formed in the side surface when the roller passes through the side surface. Manufacturing method.
The masking member (201) is rotated each time the element intermittent portion (204) is sent along with the conveyance of the fastener chain (203), whereby masking is performed using the openings (202) that are sequentially different. The manufacturing method of the fastener chain with a separation fitting insert of Claim 8.
Each opening (202) of the masking member (201) removes the adhesive (205) attached to the periphery of the opening (202) between the end of masking and the next masking. Or the manufacturing method of the fastener chain with a separation fitting insert of 9.
The masking member (305) is a masking tape having an opening (303) for masking that is sequentially fed out by an unwinding / winding device (300) having an unwinding portion (301) and a winding portion (302). Yes, in Step C, the fastener chain (306) is conveyed so that the element intermittent part (304) passes under the masking tape moving between the unwinding part (301) and the winding part (302). Item 8. A method for manufacturing a fastener chain with a break-and-insert insert according to Item 7.
The method for producing a fastener chain with a split-fitting insert according to any one of claims 7 to 11, wherein the curable adhesive (205, 308, 402) is a two-component curable adhesive.
The method for producing a fastener chain with a break-off fitting according to any one of claims 5 to 12, wherein the step C is performed on a pre-heated fastener chain (203, 306, 401).
The method for producing a fastener chain with a break-fit insert according to any one of claims 5 to 13, wherein a heat press is performed on the fastener chain (203, 306, 401) after the step C.
The weight of the curable adhesive (205, 308, 402) impregnated in the element intermittent portion (204, 304) per 1 m 2 of the fastener tape is 50 to 300 g (dry weight). Of manufacturing a fastener chain with an open / close insertion tool.