Preparation method of anti-seepage zipper, anti-seepage zipper and daily necessities with opening and closing functions

Abstract

The invention relates to a preparation method of an anti-seepage zipper, the anti-seepage zipper and a daily article with an opening and closing function. According to the preparation method of the anti-seepage zipper, a thermoplastic elastomer at least forms a covering layer and a filling part which are integrally connected through a one-time continuous pressing and coating process, so that the process is simplified, and the anti-seepage function of the anti-seepage zipper is improved.

Description

Technical Field

[0001] The invention relates to an anti-seepage zipper, in particular to a method for preparing the anti-seepage zipper and a product manufactured by the method for preparing the anti-seepage zipper. Background Art

[0002] Zippers are commonly seen in our daily necessities and are an indispensable opening and closing device. Due to the convenience of opening and closing, as well as the wide range of applications, zippers are widely used in clothing, such as jackets and snowsuits, carrying devices, such as purses and bags, and camping supplies, such as tents, etc.

[0003] In fact, in order to achieve the function of waterproofing, the aforementioned daily necessities not only select waterproof fabrics, but also select zippers with waterproofing function, as shown in Taiwan Patent No. I374714 and I395555 owned by the applicant of the present invention (corresponding to Chinese Patent No. CN 101744431 B, CN 101966026 B, and U.S. Patent No. US 8,397,353 B2, US 8,484,810 B2 and US 8,689,408 B2). The drawings of the aforementioned patents disclose that the waterproofing function of the zipper is achieved by means of a thermoplastic elastomer poured into a central gap of the zipper to prevent fluid, such as liquid, from penetrating through the central gap, and by means of a waterproof film attached to the surface of the pair of supporting cloth tapes to prevent the fluid from penetrating through the pair of supporting cloth tapes.

[0004] The waterproof film needs an adhesive layer to be bonded to the pair of supporting cloth strips, so two processes are required to complete the installation of the waterproof film. In addition, the waterproof film is basically coated with an organic solvent to form a thin film, which is prone to false bonding and many defects including bubbles.

[0005] Furthermore, the waterproof film and the adhesive layer must be made using organic solvents, which is not conducive to environmental protection. In particular, the waterproof film must pass through the adhesive layer to be attached to the main fabric of the clothing, which is time-consuming and increases production costs.

[0006] Another example is US Patent Publication No. US 2017 / 0332744 A1 Figure 4 As shown in the figure, a polyester resin curtain coating is applied on a main surface of a pair of supporting fabrics of a zipper, and a slit outlet of a mold is set at a distance of 0.1 mm to 2.0 mm from the zipper. Since the zipper does not contact the mold, the pressure of the polyester resin coating is very small. Figure 5As shown, the depth of the polyester resin penetrating into a central gap of the zipper does not exceed the thickness of the pair of supporting fabrics, so it does not fill the central gap or touch the multiple fastening elements in the central gap, and can only be coated on the concave-convex texture of the main surface, but does not penetrate into the webbing structure of the pair of supporting fabrics, and does not further penetrate into the gaps between the multiple fastening elements, so that it does not produce an anchoring function. Therefore, the thin polyester resin coating is very easy to bulge and separate from the surface of the pair of supporting fabrics, which in turn causes the split seam to open and wear very easily, so that liquids and other fluids will penetrate through the split seam, causing the zipper to lose its waterproof function. Summary of the invention

[0007] The main purpose of the present invention is to provide a method for preparing a waterproof zipper, which uses a continuous extrusion coating process to form a thermoplastic elastomer into at least a covering layer and a filling part that are integrally connected, so as to simplify the process and enhance the waterproof function of the waterproof zipper.

[0008] To achieve the above-mentioned purpose, the technical means adopted by the present invention provides a method for preparing an anti-seepage zipper, which comprises the following steps:

[0009] A zipper is provided, which includes a pair of supporting cloth tapes arranged in parallel, each of the supporting cloth tapes has a first surface, a second surface arranged opposite to the first surface, an inner side surface and an inner side edge, and a central gap is provided between the two inner side surfaces arranged opposite to each other; two rows of continuous fastening elements are relatively combined at the inner side edge of the second surface of the pair of supporting cloth tapes or an outer side edge of the first surface in a folded shape; a pressing and coating mold is provided, which has a longitudinal convex ridge and a glue injection port assembly, the zipper is attached to the pressing and coating mold with each of the first surfaces of the pair of supporting cloth tapes, and the longitudinal convex ridge is used to be embedded in the central gap to guide the stability of the zipper in the continuous pressing and coating traveling direction and expand the central gap, wherein the glue injection port assembly has a longitudinal glue injection port and a transverse glue injection port;

[0010] Placing a first thermoplastic elastomer in an extruder so that the thermoplastic elastomer in a hot melt state is sequentially injected into at least the central gap through the longitudinal injection port and the transverse injection port of the extrusion coating mold to form a filling body, and then coated on each of the first surfaces of the pair of supporting cloth tapes to form a covering layer, wherein the filling body and the covering layer are integrally connected; and

[0011] The filling body is divided in the central gap so that the filling body has a left filling part, a right filling part and a first dividing seam between the left and right filling parts to prepare an impermeable zipper with opening and closing functions.

[0012] In one embodiment, the first thermoplastic elastomer of the filling body further penetrates into at least a portion of a gap between each fastening end of the plurality of fastening elements and a core line and / or at least one bonding line of the opposite plurality of fastening elements to form a penetration portion, and the filling body, the penetration portion and the covering layer are integrally connected.

[0013] In one embodiment, the preparation method further includes at least one pressing wheel set, which is arranged at an appropriate distance from an outlet end of the extrusion coating mold so as to compact and seal the filling body, the infiltration part and the covering layer formed by the thermoplastic elastomer onto the anti-seepage zipper.

[0014] In one embodiment, the thermoplastic elastomer of a portion of the cover layer further penetrates into a plurality of tissue gaps of each of the second surfaces of the pair of supporting fabric tapes to form a plurality of anchoring bodies.

[0015] In one embodiment, the preparation method further includes forming a polymer elastic layer, the polymer elastic layer at least covering a portion of the covering layer and the filling portion, and dividing the polymer elastic layer and the filling portion in the central gap to form the first dividing seam.

[0016] In one embodiment, the filling body is divided within the central gap to form the first dividing seam: and further includes a step of setting a polymer elastic layer, which is to combine a second thermoplastic elastomer coating or a polymer elastic film on at least a portion of the filling body and the covering layer, and cover the first dividing seam to form a polymer elastic layer, and separately divide the polymer elastic layer to form a second dividing seam.

[0017] In one embodiment, the first thermoplastic elastomer is injected into the central gap in sequence to form a filling body and a covering layer, and the filling body and the covering layer are connected as one body, and further includes a glue spreading process, which is to adhere a second thermoplastic elastomer to at least a part of each of the dividing surfaces of the left filling part and the right filling part respectively or simultaneously, and form a pair of extension bodies opposite to each other; the left filling part and an extension body together form a left expansion part, and the right filling part and another extension body together form a right expansion part; when the anti-seepage zipper is fastened, the left expansion part and the right expansion part can elastically abut each other.

[0018] In one embodiment, the first thermoplastic elastomer is sequentially injected into at least the central gap to form a filling body, and the filling body and the covering layer are integrally connected, which further includes a glue spreading process, wherein the covering layer of the first surface of the left supporting cloth tape and the covering layer of the first surface of the right supporting cloth tape are adjacent to each other, tightly fitting and merging, so that the dividing surface of the left filling part and the dividing surface of the right filling part together form a combined dividing surface; a second thermoplastic elastomer is coated and adhered to at least a part of the combined dividing surface in a molten state to form an extension body assembly, and then the extension body assembly is divided, so that the left filling part and an adjacent extension body together form a left expansion part, and the right filling part and another adjacent extension body together form a right expansion part; when the anti-seepage zipper is fastened, the left expansion part and the right expansion part can elastically abut each other.

[0019] In one embodiment, the first thermoplastic elastomer of the filling body further penetrates into a gap between each fastening end of the plurality of fastening elements and a core line and / or at least one bonding line of the opposite plurality of fastening elements to form an infiltration portion, and the filling body, the infiltration portion and the covering layer are integrally connected, and further include a glue spreading process, which is to adhere a second thermoplastic elastomer to at least a portion of each of the dividing surfaces of the left filling portion and the right filling portion respectively or simultaneously, and form a pair of extension bodies opposite to each other; the left filling portion and an extension body together form a left expansion portion, and the right filling portion and another extension body together form a right expansion portion; when the anti-seepage zipper is fastened, the left expansion portion and the right expansion portion can elastically abut each other.

[0020] In one embodiment, at least one of the first surface and the second surface of the pair of supporting cloth tapes is impregnated with a liquid adhesive or coated with an adhesive to improve the bonding strength of the covering layer to the pair of supporting cloth tapes.

[0021] In one embodiment, a water-repellent agent is dip-coated on each of the second surfaces of the supporting cloth tape and the plurality of the fastening elements, so that each of the second surfaces and the plurality of the fastening elements have a water-repellent function.

[0022] Another object of the present invention is to provide an impermeable zipper, which uses a continuous extrusion coating process to set a thermoplastic elastomer in a hot-melt state on a zipper to form a filling part, a penetration part and a covering layer that are integrally connected, so as to simplify the production process and improve environmental quality.

[0023] In order to achieve the aforementioned purpose, the technical means adopted by the present invention provides a waterproof zipper, which is a product made according to the aforementioned method for preparing the waterproof zipper.

[0024] Another object of the present invention is to provide a daily necessity with opening and closing functions, which is provided with the anti-seepage zipper of the present invention.

[0025] In order to achieve the aforementioned purpose, the technical means adopted by the present invention provides a daily necessity with opening and closing functions, which is provided with the aforementioned anti-seepage zipper.

[0026] In one embodiment, the daily item with the opening and closing function is a daily item selected from the group consisting of clothing, a carrying device, and camping equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To further disclose the specific technical content of the present invention, please first refer to the accompanying drawings, in which:

[0028] Figure 1 is a cross-sectional view of an existing zipper;

[0029] Figure 2 is a cross-sectional view of a first embodiment of the anti-seepage zipper of the present invention;

[0030] Figure 3 is a cross-sectional view of a second embodiment of the anti-seepage zipper of the present invention;

[0031] Figure 4 Schematic diagram of a coating mold for the first embodiment of the anti-seepage zipper of the present invention;

[0032] Figure 5 A cross-sectional view of a glue injection port assembly of a pressure coating mold for a first embodiment of the anti-seepage zipper of the present invention;

[0033] Figure 6 A cross-sectional view of another glue injection port assembly of the pressure coating mold used in the first embodiment of the anti-seepage zipper of the present invention;

[0034] Figure 7 A cross-sectional view of the plurality of anchoring bodies in which the thermoplastic elastomer of the covering layer of the first embodiment of the anti-seepage zipper of the present invention penetrates into the plurality of slits of the tissue of each of the second surfaces of the pair of supporting cloth tapes;

[0035] Figure 8 is a cross-sectional view of a third embodiment of the anti-seepage zipper of the present invention;

[0036] Fig. 9 is a cross-sectional view of a fourth embodiment of the anti-seepage zipper of the present invention;

[0037] Fig.10a is a cross-sectional view of a fifth embodiment of the anti-seepage zipper of the present invention;

[0038] Fig.10b and 10c are cross-sectional views of two other equivalent embodiments of the fifth embodiment of the anti-seepage slide fastener of the present invention; and

[0039] Fig.11 It is a cross-sectional view of a sixth embodiment of the anti-seepage zipper of the present invention. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0041] like Figure 1 As shown, it discloses a cross-sectional view of a conventional zipper, the zipper A comprises a pair of parallel supporting tapes 11, each of the pair of supporting tapes 11 has a first surface 11a, a second surface 11b arranged opposite to the first surface 11a, an inner side surface 11c and an inner side edge 11d, and a central gap 12 is provided between the two oppositely arranged inner side surfaces 11c, and a plurality of continuous fastening elements 2 arranged in a row are connected at least one connecting line 3 at each inner side edge 11d of the pair of supporting tapes 11.

[0042] Each of the two rows of continuous fastening elements 2 is formed into a continuous coil shape by heating a monofilament such as nylon or polyester, and each has a top surface 21, a bottom surface 22 and a fastening end 23. A core thread 25 is inserted into each inner cavity 24 between the top surface 21 and the bottom surface 22, and a plurality of the fastening elements 2 are connected to the inner edge 11d of each supporting cloth tape 11 by the at least one connecting line 3 by sewing, so that each row of continuous fastening elements 2 is adjacent to the corresponding second surface 11b of the supporting cloth tape 11 with the top surface 21. There is a gap 26 between each fastening end 23 and the opposite core thread 25 and / or the at least one connecting line 3.

[0043] like Figure 2 As shown, it discloses a cross-sectional view of the first embodiment of the anti-seepage zipper of the present invention, which is a Figure 1 The zipper A shown is combined with a first thermoplastic elastomer 4 to form an impermeable zipper 1. The first thermoplastic elastomer 4 includes a filling body 41 and a covering layer 43 which are integrally connected. The covering layer 43 is adhered to each of the first surfaces 11a and modifies the filling body 41 to control the overall flatness of the first thermoplastic elastomer 4 on each of the first surfaces 11a of the pair of supporting cloth tapes 11 and the filling body 41. The filling body 41 is filled in the central gap 12.

[0044] The width of the covering layer 43 can be determined according to actual needs, for example, it can fully cover the first surfaces 11a of the pair of supporting tapes 11, or only cover the inner edges 11d of the first surfaces 11a of the pair of supporting tapes 11. Subsequently, the filling body 41 is divided in the central gap 12 to be divided into a left filling portion 411, a right filling portion 412, and a first dividing seam 413 between the left and right filling portions 411, 412, and the left filling portion 411 and the right filling portion 412 each have a dividing surface 414, so that the zipper A is prepared into an impermeable zipper 1 with impermeable and opening and closing functions.

[0045] like Figure 3 As shown, it discloses a cross-sectional view of the second embodiment of the anti-seepage zipper of the present invention. The difference between the second embodiment and the first embodiment is that the filler 41 of the first thermoplastic elastomer 4 of the second embodiment further penetrates into at least a part of the gap 26 between the buckling end 23 and the opposite core line 25 and / or the at least one bonding line 3 to form an infiltration portion 42. The first thermoplastic elastomer 4 includes the filler 41, the infiltration portion 42 and the covering layer 43 which are integrally connected. The covering layer 43 adheres to each of the first surfaces 11a and modifies the filler 41 to control the overall flatness of the first thermoplastic elastomer 4 on each of the first surfaces 11a of the pair of supporting cloth tapes 11 and the filler 41. The filler 41 is filled in the central gap 12. The infiltration portion 42 is filled in at least a part of the gap 26 between the buckling end 23 of each of the buckling elements 2 and the opposite core line 25 and / or the at least one bonding line 3.

[0046] The width of the covering layer 43 can be determined according to actual needs, for example, it can fully cover the first surfaces 11a of the pair of supporting tapes 11, or only cover the inner edges 11d of the first surfaces 11a of the pair of supporting tapes 11. Subsequently, the filling body 41 is divided in the central gap 12 to be divided into a left filling portion 411, a right filling portion 412, and a first dividing seam 413 between the left and right filling portions 411, 412, and the left filling portion 411 and the right filling portion 412 each have a dividing surface 414, so that the zipper A is prepared into an impermeable zipper 1 with impermeable and opening and closing functions.

[0047] like Figure 4 As shown, it discloses a schematic diagram of a continuous extrusion coating process for the zipper to form the anti-seepage zipper 1. The extrusion coating process is to attach the zipper A to an extrusion coating die 5 (extrusion-coating die) in a fastened state to perform the continuous extrusion coating process.

[0048] A longitudinal ridge 51 is provided at a front end of the pressing and coating mold 5, and the ridge 51 is used to be embedded in the central gap 12 to guide the relative position of the zipper A in the pressing and coating mold 5, so as to stabilize the movement of the zipper A and accurately press-coat the first thermoplastic elastomer 4 in the central gap 12, as well as the coating position and width on each of the first surfaces 11a of the pair of supporting cloth tapes 11, so as to form the filling body 41 and the covering layer 43 connected as one piece.

[0049] In another embodiment, the first thermoplastic elastomer 4 continues to penetrate from the central gap 12 into at least a portion of each of the slits 26 between each of the fastening ends 23 of the fastening elements 2 and the opposite core wires 25 and / or the at least one joining wire 3, as well as the coating position and width on each of the first surfaces 11a of the pair of supporting fabric tapes 11, so as to form the filling body 41, the penetration portion 42 and the covering layer 43 connected in one piece. In order to clearly disclose the ridge 51, in Figure 4 A section of the zipper A in front of the pressing coating mold 5 is omitted.

[0050] like Figure 5 As shown, the pressing coating mold 5 is similar to The coating mold 5 is provided with a glue injection port assembly 52 at the rear end of the convex ridge 51, and the glue injection port assembly 52 includes a longitudinal glue injection port 52a and a transverse glue injection port 52b that are interconnected. Figure 6 As shown, the glue injection port assembly 52 includes a longitudinal glue injection port 52a and a transverse glue injection port 52b with a gap. Figure 5 and Figure 6 The front end of the convex ridge 51 is pointed or blunt, which is set according to production needs.

[0051] The first thermoplastic elastomer 4 is basically injected and coated in the order of the filling body 41, the penetration portion 42 and the covering layer 43. The longitudinal glue outlet 52a is used to inject the first thermoplastic elastomer 4 in a hot melt state from the central gap 12 to form the filling body 41 and / or the penetration portion 42; and the transverse glue injection port 52b is mainly used to coat the first thermoplastic elastomer 4 on each of the first surfaces 11a of the pair of supporting cloth tapes 11 to form the covering layer 43, and can further modify the thickness and flatness of the filling body 41 and the covering layer 43.

[0052] Since the zipper A is attached to the coating mold 5 for the coating process, the first thermoplastic elastomer 4 in the hot melt state immediately contacts and is coated on the zipper A after leaving the glue injection port assembly 52, so that the pair of supporting fabrics 11 receive the glue ejection thrust generated by the extrusion of an extruder, and push the first thermoplastic elastomer 4 of the covering layer 43 to penetrate into a structure of the pair of supporting fabrics 11. Therefore, in the case where the structure of the pair of supporting fabrics 11 is not particularly dense, the first thermoplastic elastomer 4 of the covering layer 43 can further penetrate into the multiple gaps of the structure of each of the second surfaces 11b of the pair of supporting fabrics 11 to form multiple anchor blocks 43a (see Figure 7 ) to increase the bonding strength between the covering layer 43 and the pair of supporting cloth tapes 11.

[0053] Since the first thermoplastic elastomer 4 is heated and melted by a heating extruder and then coated on the zipper A, no organic solvent is used, thus avoiding air pollution caused by the volatilization of the organic solvent, making the preparation method of the impermeable zipper an environmentally friendly process.

[0054] The ridge 51 of the pressing and coating mold 5 is used not only to guide the zipper A, but also to expand the central gap 12 to increase the width of the filling body 41, and also to push the pair of supporting tapes 11, so that the overlapping parts of the plurality of fastening elements 2 are reduced, thereby increasing the size of each of the gaps 26 between the fastening ends 23 of each of the fastening elements 2 and the opposite core wire 25 and / or the at least one joining wire 3.

[0055] Please refer to Figure 3 , wherein the penetration portion 42 at least passes over each of the top surfaces 21 of the plurality of fastening elements 2, and the first thermoplastic elastomer 4 in the penetration portion 42 can expand and fill each of the gaps 26 between each of the fastening ends 23 of the plurality of fastening elements 2 and the opposite core wires 25 and / or the at least one joining wire 3, thereby simultaneously expanding the central gap 12 to have a wider filling body 41. Subsequently, the filling body 41 is divided in the central gap 12 to have a first dividing seam 413, so as to enhance the anti-seepage function of the anti-seepage zipper 1.

[0056] See also Figure 4 At least one pressing wheel set 53 is provided at an outlet end of the pressing and coating mold 5. There is a suitable distance between the pressing wheel set 53 and the pressing and coating mold 5 to ensure that the surface of the thermoplastic elastomer 4 is cooled and hardened to the point where it will not stick to the pressing wheel set 53, but can be pressed and pushed by the pressing wheel set 53 to improve the compactness of the covering layer 43, the filling body 41 and the penetration part 42 combined in the anti-seepage zipper 1. If necessary, the granular ends of the multiple anchoring bodies 43a can be flattened by the pressing wheel set 53 to expand the area they occupy in the multiple gaps of the tissue of the pair of supporting cloth tapes 11, so as to increase the anchoring effect of the multiple anchoring bodies 43a. The covering layer 43 can also be pressed to have a specific pattern according to the pattern on the surface of the pressing wheel set 53.

[0057] If each of the second surfaces 11b of the pair of supporting tapes 11 and each of the bottom surfaces 22 of the plurality of fastening elements 2 in the two rows are treated with a water-repellent agent, in addition to each of the second surfaces 11b of the pair of supporting tapes 11 having a water-repellent function, the water-repellent property of the water-repellent agent also helps the first dividing seam 413 resist the penetration of liquids, such as water.

[0058] In addition, the cover layer 43 itself has an anti-seepage function, and its thermoplasticity can be combined with a clothing fabric having a thermoplastic polyurethane (TPU, Thermoplastic Polyurethane) back adhesive layer (shown in Fig. 9 ) can be directly hot-melt bonded, so the traditional process of adding a layer of hot-melt adhesive film as a bonding layer can be omitted, thereby reducing the subsequent processing procedures, saving time, convenience and reducing costs.

[0059] Therefore, the advantages of manufacturing the impermeable zipper 1 through the extrusion coating process of the single extrusion coating mold 5 are as follows:

[0060] 1. The first thermoplastic elastomer 4 is injected into the central gap 12 under the pressure of the pressing mold 5, and the gaps 26 between the snap-fit ​​ends 23 of the snap-fit ​​elements 2 and the opposite core wires 25 and / or the at least one bonding wire 3 are pressed and coated on the first surfaces 11a of the pair of supporting cloth tapes 11, and further penetrate into the multiple gaps of the tissue of the second surfaces 11b of the pair of supporting cloth tapes 11. The multiple anchoring bodies 43a (shown in FIG. 1 ) Figure 7 ).

[0061] 2. The forming process of the covering layer 43, the filling body 41 and the infiltration part 42 does not contain any organic solvent, so the product is an environmentally friendly process.

[0062] 3. The covering layer 43 has both an anti-seepage function and can serve as an adhesive layer. It can be directly bonded to a waterproof film or hot-melt bonded to a piece of clothing fabric with a TPU adhesive backing without providing a hot-melt adhesive bonding layer, which saves steps and reduces costs.

[0063] like Figure 8 As shown, the cross-sectional view of the third embodiment of the anti-seepage zipper of the present invention is shown. The third embodiment is the same as the second embodiment, and both select a continuous loop type fastening element zipper A with a core wire 25. When there is a special requirement for the surface texture or smoothness of the covering layer 43, a polymer elastic layer 6 with suitable smoothness and surface texture can be provided on the anti-seepage zipper 1 of the first embodiment, and the covering layer 43 in the hot melt state just formed by the first thermoplastic elastomer 4 is used as a bonding layer at an appropriate distance after the anti-seepage zipper 1 leaves the pressure coating mold 5, and the pressing wheel group 55 is used to directly press and adhere, so that the surface of the covering layer 43 of the anti-seepage zipper 1 has suitable texture or smoothness, and then the filling body 41 and the polymer elastic layer 6 are divided in the central gap 12, and a first dividing seam 413 is provided.

[0064] In addition, the polymer elastic layer 6 can be selected from a single-layer polymer elastic layer 6 or a polymer elastic double-layer film having an adhesive layer. Since the polymer elastic double-layer film has an adhesive layer, it can also be bonded separately by a hot-melt bonding process, but the invention is not limited thereto. In particular, the width of the polymer elastic layer 6 depends on the needs and does not need to be particularly limited.

[0065] The pair of supporting cloth tapes 11 can be elastic in the weft direction (lateral direction), for example, by using weft yarns with appropriate elasticity. When an external lateral force is applied to the anti-seepage zipper 1, the elasticity of multiple weft yarns can absorb a portion of the external lateral force, thereby reducing the external lateral force transmitted to the filling body 41, and further reducing the degree to which the first dividing seam 413 is expanded by the external lateral force, thereby enhancing the anti-seepage function of the anti-seepage zipper 1.

[0066] In addition to the continuous loop fastening element zipper with the core wire 25, the anti-seepage zipper 1 can also be selected from a continuous loop fastening element zipper without a core wire, a continuous folding fastening element zipper without a core wire, a continuous loop fastening element invisible zipper, and a continuous loop fastening element woven zipper.

[0067] See also Fig. 9 , which shows a cross-sectional view of a fourth embodiment of the anti-seepage zipper of the present invention. The anti-seepage zipper 1 is a continuous loop type fastening element invisible zipper with a core wire 25, and a plurality of the fastening elements 2 are connected to an outer edge 11e of each of the first surfaces 11a of the pair of supporting cloth tapes 11 in a reversed shape by at least one connecting line 3. In the fourth embodiment, the polymer elastic layer 6 is arranged after the filling body 41 is divided to have a first dividing seam 413, and then the polymer elastic layer 6 is divided to have a second dividing seam 61. The purpose of this is to use the first dividing seam 413 to first release the residual stress implicit in the first thermoplastic elastomer 4 of the filling body 41 after the pressure coating. In addition, after the filling part is divided, the fastening element 2 needs to be re-fastened. This re-fastening process may cause the filling part 41 and the penetration part 42 to loosen, preventing the multiple fastening elements 2 from returning to the original depth of mutual fastening, causing the first dividing seam 413 to become wider. Therefore, dividing the filling part 41 and re-fastening the anti-seepage zipper 1 can make the structure of the anti-seepage zipper 1 stable, and then further arrange the polymer elastic layer 6, which at least covers the left filling part 411, the right filling part 412, the first dividing seam 413 and at least a part of the covering layer 43.

[0068] In addition, the polymer elastic layer 6 can be made of the same material as the first thermoplastic elastomer 4 of the covering layer 43. Due to the special structure of the invisible zipper, the zipper head will not contact the first surface 11a of the invisible zipper or the covering layer 43 of the fourth embodiment, so the polymer elastic layer 6 can also be selected from a reflective film material, so that the fourth embodiment has a reflective function without wearing the reflective film material.

[0069] Similarly, the width and thickness of the polymer elastic layer 6 can be selected as needed. For example, the invisible zipper shown in the third embodiment does not have a wear concern because the zipper head does not contact the polymer elastic layer 6. Therefore, the thickness does not need to be limited. In this case, the polymer elastic layer 6 can be made of the same material as the covering layer 43.

[0070] In addition, if the zipper is selected from the zipper A shown in the first embodiment, when the anti-seepage zipper 1 is opened and closed, the polymer elastic layer 6 is contained by the zipper head and contacts the friction. In order to reduce the wear resistance of the polymer elastic layer 6, the polymer elastic layer 6 can be selected from a coating of a material harder than the first thermoplastic elastomer 4, or a film with a single-layer polymer elastic layer 6 or a polymer elastic double-layer film with a bonding layer to enhance the rigidity, smoothness and wear resistance of the polymer elastic layer 6.

[0071] The width of the polymer elastic layer 6 can be slightly larger than the width of the zipper head used, but is not limited to this. Therefore, the two side edges of the polymer elastic layer 6 each have a height difference boundary on the covering layer 43, which can provide a clothing fabric 44 as a reference line for welding, and can also allow the height of the fabric 44 after welding with the anti-seepage zipper 1 to roughly form a plane with the polymer elastic layer 6.

[0072] In addition, the covering layer 43 and the polymer elastic layer 6 can be made of thermoplastic elastomer. When the surface of the main fabric 44 has a back adhesive layer 44a formed by a thermoplastic elastomer, the process and materials of setting a hot melt adhesive layer between the main fabric 44 of the clothing and the anti-seepage zipper 1 can be omitted during welding.

[0073] like Fig.10a As shown, it shows a cross-sectional view of the fifth embodiment of the anti-seepage zipper of the present invention. The anti-seepage zipper 1 uses a continuous loop type fastening element zipper with a core wire. The technical feature of the fifth embodiment that is different from the aforementioned embodiments is that the first thermoplastic elastomer 4 is at least sequentially injected into the central gap 12 to form a filling body 41 and coated into a covering layer 43, and the filling body 41 and the covering layer 43 are connected as one body. After the injection coating process, the two rows of continuous fastening elements 2 of the waterproof zipper 1 are in a separated state, and a glue spreading process is performed with the same or different second thermoplastic elastomer 7. The second thermoplastic elastomer 7 is respectively or simultaneously adhered to at least a portion of each of the dividing surfaces 414 of the left filling portion 411 and the right filling portion 412 to form a pair of extending bodies 71 in opposite directions, thereby expanding the overall width of the left filling portion 411 and the right filling portion 412, so that the left filling portion 411 and an extending body 71 together form a left expanding portion 71a, and the right filling portion 412 and another extending body 71 together form a right expanding portion 71b.

[0074] Also, see Fig.10band Fig.10c , which shows an equivalent embodiment of the fifth embodiment, which is to separate the two rows of continuous fastening elements 2 of the waterproof zipper 1 after the pressing coating process, and then closely adhere the covering layer 43 of the first surface 11a of the left supporting cloth tape 11 and the covering layer 43 of the first surface 11a of the right supporting cloth tape 11, so that the dividing surface 414 of the left filling part 411 and the dividing surface 414 of the right filling part 412 together form a combined dividing surface 414a, and apply the second thermoplastic elastomer 5 in a molten state to at least a part of the combined dividing surface 414a to form an extension body assembly 7a, and then divide the extension body assembly 7a, so that the left filling part 411 and an adjacent extension body 71 together form a left expansion part 71a, and the right filling part 412 and another adjacent extension body 71 together form a right expansion part 71b.

[0075] When the anti-seepage zipper 1 is fastened and in a state without external force, for example, when the anti-seepage zipper 1 is not yet combined with clothing, the left expansion portion 71a and the right expansion portion 71b can elastically abut against each other to further enhance the anti-seepage function of the anti-seepage zipper 1.

[0076] In addition, the hardness of the first thermoplastic elastomer 4 can affect the softness of the multiple anti-seepage zippers 1 and the bonding strength with the pair of supporting cloth tapes 11. The multiple first thermoplastic elastomers 4 can be selected from thermoplastic elastomers with a hardness of Shore A hardness below 95A (or Shore 55D).

[0077] like Fig.11, which shows a cross-sectional view of the sixth embodiment of the anti-seepage zipper of the present invention. The anti-seepage zipper 1 uses a coreless continuous loop fastening element weaving zipper. The technical feature of the sixth embodiment that is different from the fifth embodiment is that the first thermoplastic elastomer 4 is sequentially injected into at least the central gap 12 to form a filling body 41, and further penetrates into at least a portion of each of the fastening ends 23 of the plurality of fastening elements 2 and the opposite core wire 25 and / or each of the gaps 26 between the at least one bonding line 3 to form an infiltration portion 42, and is coated into a covering layer 43, and the filling body 41, the infiltration portion 42 and the covering layer 43 are integrally connected. After the injection coating process, the two rows of continuous loop fastening elements of the anti-seepage zipper 1 are When the fastening element 2 is in a separated state, a glue spreading process is performed using the same or different second thermoplastic elastomer 7. The second thermoplastic elastomer 7 is adhered to at least a portion of each of the dividing surfaces 414 of the left filling portion 411 and the right filling portion 412 respectively or simultaneously to form a pair of extending bodies 71 opposite to each other, thereby expanding the overall width of the left filling portion 411 and the right filling portion 412, so that the left filling portion 411 and one extending body 71 together form a left expanding portion 71a, and the right filling portion 412 and another extending body 71 together form a right expanding portion 71b.

[0078] When the anti-seepage zipper 1 is fastened and in a state without external force, for example, when the anti-seepage zipper 1 is not yet combined with clothing, the left expansion portion 71a and the right expansion portion 71b can elastically abut against each other to further enhance the anti-seepage function of the anti-seepage zipper 1.

[0079] In addition, the hardness of the first thermoplastic elastomer 4 can affect the softness of the multiple anti-seepage zippers 1 and the bonding strength with the pair of supporting cloth tapes 11. The multiple first thermoplastic elastomers 4 can be selected from thermoplastic elastomers with a hardness of Shore A hardness below 95A (or Shore 55D).

[0080] The pair of supporting cloth tapes 11 can be made of a material or polarity similar to that of the first thermoplastic elastomer 4 so that the bonding between the two can reach an optimal state, for example, a thermoplastic polyester elastomer is selected to be coated on the pair of supporting cloth tapes 11 made of polyester material, or a thermoplastic polyamide elastomer is selected to be coated on the pair of supporting cloth tapes 11 made of polyamide material, or a thermoplastic polyurethane elastomer is selected to be coated on the pair of supporting cloth tapes 11 made of polyamide material, or a thermoplastic polyurethane elastomer is selected to be coated on the pair of supporting cloth tapes 11 containing polyamide fiber.

[0081] In order to strengthen the bonding strength between the cover layer 43 and the pair of supporting fabrics 11 to meet the waterproof function requirements of certain heavy equipment, if necessary, the pair of supporting fabrics 11 can be pre-dipped in a liquid adhesive, such as water-based polyurethane or solvent-based adhesive to improve the bonding strength of the cover layer 43. Furthermore, the pair of supporting fabrics 11 can also be pre-coated with an adhesive, such as moisture-curing polyurethane, on each of the first surfaces 11a of the pair of supporting fabrics 11 to improve the bonding strength of the cover layer 43.

[0082] Therefore, through the implementation of the present invention, its beneficial effects are as follows:

[0083] 1. The present invention uses a single process to apply a thermoplastic elastomer, and simultaneously completes the arrangement of the covering layer, the filling portion, and the penetration portion and connects them as one, which can prevent the residual shrinkage stress after the known waterproof film is attached, so as to improve the tightness of the dividing seam, and at the same time make the anti-seepage zipper soft, thereby expanding the scope of use.

[0084] 2. The thermoplastic polymer elastomer used in the present invention does not use any organic solvent in the extrusion coating process, so it can meet the environmental protection requirements.

[0085] 3. The present invention can prepare the anti-seepage zipper by a single extrusion coating process, which not only improves production efficiency but also reduces energy consumption, thereby significantly reducing production costs.

[0086] 4. The covering layer of the present invention can simplify the subsequent melting and pressing bonding process with the clothing and improve the process level of melting and pressing bonding.

[0087] 5. The plurality of supporting cloth tapes of the present invention may have lateral elasticity, which can disperse and absorb the lateral pulling force generated during use through the elastic structure of the pair of supporting cloth tapes, and is difficult to be transmitted to the respective fastening ends of the plurality of fastening elements, so as to prevent the central gap of the anti-seepage zipper from being stretched open by external force during use.

[0088] 6. After the second surface of the pair of supporting fabrics of the present invention is treated with a water-repellent agent, the anti-seepage function of the dividing seam to fluids, such as water, can be enhanced.

[0089] 7. The covering layer of the present invention has both an anti-seepage function and can serve as a bonding layer, so that the covering layer can be directly hot-melt bonded to the clothing fabric having the same material as the thermoplastic polymer elastomer backing adhesive, thereby reducing subsequent processing, saving time and convenience and reducing costs.

[0090] Furthermore, the anti-seepage zipper can be applied to daily necessities with opening and closing functions, and the daily necessities are selected from clothing, such as clothes or pants, carrying devices, such as purses or backpacks, camping equipment, such as tents, sleeping bags and other products, so that multiple products have opening and closing and anti-seepage functions.

[0091] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing an anti-seepage zipper, comprising the following steps: A zipper is provided, which includes a pair of supporting cloth tapes arranged in parallel, each of the supporting cloth tapes has a first surface, a second surface arranged opposite to the first surface, an inner side surface and an inner side edge, and a central gap is formed between the two inner side surfaces arranged opposite to each other; two rows of continuous fastening elements are relatively combined at the inner side edge of the second surface of the pair of supporting cloth tapes or an outer side edge of the first surface in a folded shape; a pressing and coating mold is provided, which has a longitudinal ridge and a glue injection port assembly, the zipper is attached to the pressing and coating mold with each of the first surfaces of the pair of supporting cloth tapes, and the longitudinal ridge is used to be embedded in the central gap to guide the stability of the zipper in the continuous pressing and coating direction and expand the central gap, wherein the glue injection port assembly has a longitudinal glue injection port and a transverse glue injection port; Placing a first thermoplastic elastomer in an extruder so that the thermoplastic elastomer in a hot melt state is sequentially injected into at least the central gap through the longitudinal injection port and the transverse injection port of the extrusion coating mold to form a filling body, and then coated on each of the first surfaces of the pair of supporting cloth tapes to form a covering layer, wherein the filling body and the covering layer are integrally connected; and The filling body is divided in the central gap so that the filling body has a left filling part, a right filling part and a first dividing seam between the left and right filling parts to prepare an impermeable zipper with opening and closing functions.

2. The method for preparing a waterproof zipper according to claim 1, wherein the first thermoplastic elastomer of the filling body further penetrates into at least a portion of a gap between each fastening end of the plurality of fastening elements and a core line and / or at least one bonding line of the plurality of opposite fastening elements to form a penetration portion, and the filling body, the penetration portion and the covering layer are integrally connected.

3. The method for preparing a waterproof zipper according to claim 1 further comprises at least one pressing wheel assembly, which is arranged at an appropriate distance from an outlet end of the extrusion coating mold so as to compact and seal the filling body, the infiltration part and the covering layer formed by the thermoplastic elastomer onto the waterproof zipper.

4. The method for preparing the impermeable zipper according to claim 1, wherein the thermoplastic elastomer of a portion of the covering layer further penetrates into a plurality of tissue gaps of each of the second surfaces of the pair of supporting fabric tapes to form a plurality of anchoring bodies.

5. The method for preparing the anti-seepage zipper according to claim 1, further comprising a polymer elastic layer, the polymer elastic layer at least covering a portion of the covering layer and the filling portion, and dividing the polymer elastic layer and the filling portion in the central gap to form the first dividing seam.

6. The method for preparing a seepage-proof zipper according to claim 1, wherein the filling body is divided in the central gap to form the first dividing seam: and further comprises a step of setting a polymer elastic layer, which step is to combine a thermoplastic elastomer coating or a polymer elastic film on at least a portion of the filling body and the covering layer, and cover the first dividing seam to form a polymer elastic layer, and separately divide the polymer elastic layer to form a second dividing seam.

7. The method for preparing a waterproof zipper according to claim 1, wherein the first thermoplastic elastomer is injected into at least the central gap in sequence to form a filling body, and the filling body and the covering layer are connected as a whole, and it further includes a glue spreading process, which is to adhere a second thermoplastic elastomer to at least a part of each of the dividing surfaces of the left filling part and the right filling part respectively or simultaneously, and form a pair of extension bodies opposite to each other; the left filling part and an extension body together form a left extension part, and the right filling part and another extension body together form a right extension part; when the waterproof zipper is fastened, the left extension part and the right extension part can elastically abut each other.

8. The method for preparing an anti-seepage zipper according to claim 1, wherein the first thermoplastic elastomer is injected into the central gap in sequence at least to form a filling body, and the filling body and the covering layer are connected as a whole, and it further includes a glue spreading process, the glue spreading process is to closely and closely connect the covering layer of the first surface of the left supporting cloth tape and the covering layer of the first surface of the right supporting cloth tape together, so that the dividing surface of the left filling part and the dividing surface of the right filling part together form a combined dividing surface; a second thermoplastic elastomer is coated and adhered to at least a part of the combined dividing surface in a molten state to form an extension body assembly, and then the extension body assembly is divided, so that the left filling part and an adjacent extension body together form a left expansion part, and the right filling part and another adjacent extension body together form a right expansion part; when the anti-seepage zipper is fastened, the left expansion part and the right expansion part can elastically abut each other.

9. The method for preparing a waterproof zipper according to claim 1, wherein the first thermoplastic elastomer of the filling body further penetrates into at least a portion of a gap between each fastening end of a plurality of the fastening elements and a core line and / or at least a bonding line of a plurality of the opposite fastening elements to form a penetration portion, and the filling body, the penetration portion and the covering layer are integrally connected, and further comprises a glue spreading process, wherein a second thermoplastic elastomer is separately or simultaneously adhered to at least a portion of each of the dividing surfaces of the left filling portion and the right filling portion to form a pair of extension bodies opposite to each other; the left filling portion and an extension body together form a left expansion portion, and the right filling portion and another extension body together form a right expansion portion; when the waterproof zipper is fastened, the left expansion portion and the right expansion portion can elastically abut each other.

10. The method for preparing a water-proof zipper according to claim 1, wherein at least one of the first surface and the second surface of the pair of supporting cloth tapes is impregnated with a liquid adhesive or coated with an adhesive to improve the bonding strength of the covering layer to the pair of supporting cloth tapes.

11. The method for preparing the anti-seepage zipper according to claim 1, wherein each of the second surfaces of the pair of support belts and the plurality of fastening elements are dipped in a water-repellent agent so that each of the second surfaces and the plurality of fastening elements have a water-repellent function.

12. An anti-seepage zipper, which is a product made by the method for preparing the anti-seepage zipper according to any one of claims 1 to 11.

13. A daily necessity with an opening and closing function, provided with the anti-seepage zipper according to claim 12 to provide the opening and closing function.

14. The daily necessities with opening and closing functions according to claim 13, wherein the daily necessities with opening and closing functions are selected from the group consisting of clothing, carrying devices and camping equipment.

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