Patent Application
20250234968
The present invention relates to a fluid-impervious zipper, especially, but not limited to, a fluid-impervious zipper with continuous coupling elements. The present invention also relates to a commercial product using the fluid-impervious zipper.
The most difficult problem with waterproof zippers is water infiltration through the center gap. Therefore, the focus of the waterproof zippers has been on how to prevent fluid infiltration through the center gap. For example, U.S. Pat. No. 8,397,353, owned by the applicant herein, proposes a waterproof zipper producing method including: injecting a molten elastomer into a central gap between a pair of coil-type chains in a zipped-up status to provide, after cooling, a filler part and a caulking part for the pair of coil-type chains, where the filler part fills up the central gap and the caulking part fills up the gaps between the coupling elements of the pair of coil-type chains; adhering a waterproof layer to the upper surface of the pair of coil-type chains and their supporting fabric tapes; and dividing the waterproof layer and the filler part along a middle line of the central gap to create a dividing seam, whereby the gap between the pair of coil-type chains in the zipped-up state can be reduced from the central gap to the dividing seam, thereby minimizing the path of fluid infiltration to provide a waterproof function. However, after multiple times of closing-and-opening operations, the stickiness of the caulking part in the two rows of continuous coupling elements will be reduced and the caulking part can become partly detached from the coupling elements and have irregular edges. As a result, during the closing operation of the two rows of continuous coupling elements, the caulking part can get folded to limit the lateral movement of the two rows of continuous coupling elements and therefore reduce the engagement depth of the two rows of continuous coupling elements, thereby widening the dividing seam to compromise the waterproof function.
Another prior art waterproof zipper as disclosed in U.S. Pat. No. 10,959,497 B2 is similar to that of the U.S. Pat. No. 8,397,353, except that the dividing seam is biased to one side in the central gap with a ratio of 1:2 in width. However, as the structure of the waterproof zipper of the U.S. Pat. No. 10,959,497 B2 is substantially same with that of the waterproof zipper of the U.S. Pat. No. 8,397,353, the dividing seam of the waterproof zipper of the U.S. Pat. No. 10,959,497 B2 will be also widened after the waterproof zipper has undergone multiple times of closing-and-opening operations. Therefore, a novel waterproof zipper structure is needed in the field.
The main objective of the present invention is to provide a coil-type fluid-impervious zipper with two rows of caulked continuous coupling elements, which is capable of enhancing the fluid-impervious performance by having an additional thermoplastic elastomer strip attached to one row of the two rows of thermoplastic-elastomer caulked continuous coupling elements to minimize the zipped-up gap of the coil-type fluid-impervious zipper.
To attain the foregoing objective, a coil-type fluid-impervious zipper is proposed, including:
In one embodiment, the first one of the pair of filler structures is thinner than the second one of the pair of filler structures.
In one embodiment, the coil-type fluid-impervious zipper further includes a pair of waterproof layers covering both the pair of supporting fabric tapes and the pair of filler structures.
In one embodiment, the coil-type fluid-impervious zipper further includes a pair of waterproof layers covering the pair of supporting fabric tapes, the pair of filler structures, and the extension strip.
In one embodiment, the pair of waterproof layers is made of the first thermoplastic elastomer.
In one embodiment, the coil-type fluid-impervious zipper further includes a pair of waterproof layers attached on the pair of supporting fabric tapes correspondingly, the pair of waterproof layers having two downward extension parts covering a free edge surface of the second one of the pair of filler structures and a free edge surface of the extension strip respectively.
In one embodiment, at least one surface of the pair of supporting fabric tapes is impregnated or coated with an adhesive to improve adhesion of a pair of waterproof layers.
In one embodiment, at least one surface of the pair of supporting fabric tapes is impregnated or coated with a water repellent agent to make the pair of supporting fabric tapes water-repellent.
To attain the foregoing objective, the invention further proposes a coil-type fluid-impervious zipper including:
In one embodiment, the coil-type fluid-impervious zipper further includes a pair of waterproof layers covering both the pair of supporting fabric tapes and extension strip assembly.
In one embodiment, the coil-type fluid-impervious zipper further includes a pair of cap layers attached on at least part of the pair of waterproof layers respectively, the pair of cap layers having two downward extension parts covering at least part of a free edge surface of the first extension strip and at least part of a free edge surface of the second extension strip respectively.
Another objective of the invention is to provide a zipper equipped waterproof commercial product.
To attain the foregoing objective, the invention proposes a commercial product adopting the aforementioned coil-type fluid-impervious zipper.
For possible embodiments, the commercial product can be an article of clothes, an article carrier, or a camping gear.
To make it easier for our examiner to understand the objective of the invention, its structure, innovative features, and performance, we use preferred embodiments together with the accompanying drawings for the detailed description of the invention.
As shown in
The existing zipper includes the pair of supporting fabric tapes 11 each having a first face 11a, a second face 11b opposite to the first face 11a, an inner edge 11c and an inner side 11d. The two inner sides 11d are opposing each other and have the central gap 12 between them, and each supporting fabric tape 11 has a chain composed of a row of continuous coupling elements 2 combined at the inner edge 11c by at least one bonding thread 3.
The continuous coupling elements 2 each have a top surface 21, a bottom surface 22 and a snap end 23; and the pair of supporting fabric tapes 11 is made of a warp-knitted fabric or a woven fabric, and can be stretchable in the warp and/or the weft direction if required.
The two rows of continuous coupling elements 2 are each formed by heat-molding a polyamide monofilament or a polyester monofilament into a continuous coil shape. In addition, a core thread 25 is disposed within each row of the continuous coupling elements 2 by passing through an inner cavity 24 between the top surface 21 and the bottom surface 22 of each coupling element 2; and each row of continuous coupling elements 2 is combined with a corresponding supporting fabric tape 11 at the inner edge 11c by a sewing process using at least one bonding thread 3, where the top surface 21 of each coupling element 2 engages the second face 11b of a supporting fabric tape 11.
It is to be noted that, the coil-type zipper of the present invention is not limited to the aforementioned zipper having the core thread 25, other zippers such as a coil-type zipper without core thread, a continuous-folding-type zipper without core thread, an invisible coil-type zipper, or a coil-type woven zipper.
The inject-and-divide process for producing the zipper shown in
After the left filler part 411 and the right filler part 412 are formed, the extension process is performed to produce the coil-type fluid-impervious zipper 1. The extension process includes: separating the zipper; and using an injection unit to inject a molten volume of a second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 411a or the free edge surface 412a to form an extension strip 51 having a free edge surface 511. With the extension strip 51 added to the free edge surface 411a (or the free edge surface 412a), when the coil-type fluid-impervious zipper 1 is zipped up, as shown in
In addition, depending on the product requirements, the second thermoplastic elastomer 5 and the first thermoplastic elastomer 4 can be of a same material or of different materials, and can be of a same color or of different colors.
It is to be noted that the extension strip 51 disposed in the first gap 43 for enhancing the fluid-impervious performance of the coil-type fluid-impervious zipper 1 has a very small width, for example, the width can be as small as between 0.1 mm and 1.6 mm, depending on the size of the zipper. Therefore, it will be more convenient and efficient to inject a molten volume of the second thermoplastic elastomer 5 onto the free edge surface 411a or the free edge surface 412a to form the extension strip 51 of a required small width, than to inject half the molten volume of the second thermoplastic elastomer 5 onto the free edge surface 411a and inject half the molten volume of the second thermoplastic elastomer 5 onto the free edge surface 412a to form a pair of extension strips having a total width of the required small width.
As shown in
Step 3: Separate the zipper, and then use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 411a to form an extension strip 51 having a free edge surface 511.
As a result, the left filler part 411 has a width W1 smaller than a width W2 of the right filler part 412, and the difference between the widths of the left filler part 411 and the right filler part 412 can be approximately equal to a width W3 of the extension strip 51, but not limited thereto. In other words, in this second embodiment, the width W1 of the left filler part 411 is smaller than the width W2 of the right filler part 412, and the sum of the width W1 of the left filler part 411 and the width W3 of the extension strip 51 is approximately equal to the width W2 of the right filler part 412, i.e. W1+W3=W2. That is, the left filler part 411 and the right filler part 412 have different widths, and at least a portion of the extension strip 51 is bonded to the free edge surface 411a of the left filler part 411 having a smaller width.
Accordingly, the pair of chains will have a substantially same width of elastomer to facilitate the zip-up operation of the coil-type fluid-impervious zipper using a slider and prevent wearing between the chains and the slider when using the slider to zip up the pair of chains. When the coil-type fluid-impervious zipper is zipped up, as shown in
Please refer to
The coil-type fluid-impervious zipper according to the third embodiment is produced by processing a zipper according to steps as follows: Step 1: Zip up the zipper, and then inject a molten volume of the first thermoplastic elastomer 4 into the central gap 12 to form the filler structure 41, of which the caulking structure 42 fills the space 26 including the space confined between mutually interlocked coupling elements 2 and the space confined between the coupling elements 2 and the core thread 25 and/or the at least one bonding thread 3.
Step 2: Form a waterproof layer on the first faces 11a of the pair of supporting fabric tapes 11 and the filler structure 41, where the waterproof layer can be a thermoplastic elastomer coating or a polymer film. Step 3: Divide the waterproof layer together with the filler structure 41 along a line parallel to the middle line of the central gap 12 to form the pair of waterproof layers 53, the left filler part 411 and the right filler part 412, where the left filler part 411 has the free edge surface 411a, the right filler part 412 has the free edge surface 412a, and the zipper in the zipped-up status has the first gap 43 between the left filler part 411 and the right filler part 412.
Step 4: Separate the zipper and use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 411a to form the extension strip 51 having the free edge surface 511.
As a result, the left filler part 411 has a width W1 smaller than a width W2 of the right filler part 412, and the sum of the width W1 of the left filler part 411 and the width W3 of the extension strip 51 is approximately equal to the width W2 of the right filler part 412, i.e. W1+W3=W2.
Accordingly, the pair of chains will have a substantially same width of elastomer to facilitate the zip-up operation of the coil-type fluid-impervious zipper using a slider and prevent wearing between the chains and the slider when using the slider to zip up the pair of chains. When the coil-type fluid-impervious zipper is zipped up, the free edge surface 511 and the free edge surface 412a will be compressed to engage with each other substantially along the middle line of the central gap 12 to result in a much smaller gap between the free edge surface 511 and the free edge surface 412a relative to the first gap 43, thereby improving the fluid-impervious performance of the coil-type fluid-impervious zipper.
Please refer to
The coil-type fluid-impervious zipper according to the fourth embodiment is produced by processing a zipper according to steps as follows: Step 1: Zip up the zipper, and then inject a molten volume of the first thermoplastic elastomer 4 into the central gap 12 to form the filler structure 41, of which the caulking structure 42 fills the space 26 including the space confined between mutually interlocked coupling elements 2 and the space confined between the coupling elements 2 and the core thread 25 and/or the at least one bonding thread 3. Step 2: Divide the filler structure 41 along a line parallel to and to the left of the middle line of the central gap 12 to form the left filler part 411 and the right filler part 412, where the left filler part 411 has the free edge surface 411a, the right filler part 412 has the free edge surface 412a, the left filler part 411 has a width W1 smaller than a width W2 of the right filler part 412, and there exists the first gap 43 between the free edge surface 411a and the free edge surface 412a.
Step 3: Separate the zipper, and then use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 411a to form the extension strip 51 having the free edge surface 511.
Step 4: Zip up the zipper, and form a waterproof layer on the first faces 11a of the pair of supporting fabric tapes 11 and on the filler structure 41, where the waterproof layer can be a thermoplastic elastomer coating or a polymer film. Step 5: Divide the waterproof layer along a border line between the extension strip 51 and the right filler part 412 to form the pair of waterproof layers 53 and a second gap 52 between the pair of waterproof layers 53, where the free edge of the left half of the pair of waterproof layers 53 extends the free edge surface 511 of the extension strip 51, and the free edge of the right half of the pair of waterproof layers 53 extends the free edge surface 412a of the right filler part 412.
As a result, the left filler part 411 has a width W1 smaller than a width W2 of the right filler part 412, and the sum of the width W1 of the left filler part 411 and the width W3 of the extension strip 51 is approximately equal to the width W2 of the right filler part 412, i.e. W1+W3=W2.
Accordingly, the pair of chains will have a substantially same width of elastomer to facilitate the zip-up operation of the coil-type fluid-impervious zipper using a slider and prevent wearing between the chains and the slider when using the slider to zip up the pair of chains. When the coil-type fluid-impervious zipper is zipped up, the free edge surface 511 and the free edge surface 412a will be compressed to engage with each other substantially along the middle line of the central gap 12 to result in a much smaller gap between the free edge surface 511 and the free edge surface 412a relative to the first gap 43, thereby improving the fluid-impervious performance of the coil-type fluid-impervious zipper.
Please refer to
The coil-type fluid-impervious zipper according to the fifth embodiment is produced by processing an zipper according to steps as follows: Step 1: Zip up the zipper, and then use an injection unit to inject a molten volume of the first thermoplastic elastomer 4 into the central gap 12 to form the filler structure 41, of which the caulking structure 42 fills the space 26 including the space confined between mutually interlocked coupling elements 2 and the space confined between the coupling elements 2 and the core thread 25 and/or the at least one bonding thread 3, and use the injection unit to form a coating of the first thermoplastic elastomer 4 on the first faces 11a of the pair of supporting fabric tapes 11. Step 2: Divide the coating of the first thermoplastic elastomer 4 together with the filler structure 41 along a line parallel to and to the right of the middle line of the central gap 12 to form the pair of waterproof layers 53, the left filler part 411 and the right filler part 412, where the left filler part 411 has the free edge surface 411a, the right filler part 412 has the free edge surface 412a, and there exists the first gap 43 between the free edge surface 411a and the free edge surface 412a.
Step 3: Separate the zipper, and then use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 412a to form the extension strip 51 having the free edge surface 511.
As a result, the left filler part 411 has a width W1 larger than a width W2 of the right filler part 412, and the sum of the width W2 of the right filler part 412 and the width W3 of the extension strip 51 is approximately equal to the width W1 of the left filler part 411, i.e. W2+W3=W1.
Accordingly, the pair of chains will have a substantially same width of elastomer to facilitate the zip-up operation of the coil-type fluid-impervious zipper using a slider and prevent wearing between the chains and the slider when using the slider to zip up the pair of chains. When the coil-type fluid-impervious zipper is zipped up, the free edge surface 511 and the free edge surface 411a will be compressed to engage with each other substantially along the middle line of the central gap 12 to result in a much smaller gap between the free edge surface 511 and the free edge surface 411a relative to the first gap 43, thereby improving the fluid-impervious performance of the coil-type fluid-impervious zipper. In addition, as the pair of waterproof layers 53, the filler structure 41 and the caulking structure 42 are integrally formed with a same raw material, the manufacturing process can be simplified to save manufacturing cost.
Please refer to
The coil-type fluid-impervious zipper according to the sixth embodiment is produced by processing a zipper according to steps as follows: Step 1: Zip up the zipper, and then inject a molten volume of the first thermoplastic elastomer 4 into the central gap 12 to form the filler structure 41, of which the caulking structure 42 fills the space 26 including the space confined between mutually interlocked coupling elements 2 and the space confined between the coupling elements 2 and the core thread 25 and/or the at least one bonding thread 3. Step 2: Divide the filler structure 41 along a line parallel to and to the right of the middle line of the central gap 12 to form the left filler part 411 and the right filler part 412, where the left filler part 411 has the free edge surface 411a, the right filler part 412 has the free edge surface 412a, the left filler part 411 has a width W1 larger than a width W2 of the right filler part 412, and there exists the first gap 43 between the free edge surface 411a and the free edge surface 412a.
Step 3: Separate the zipper, and then use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 412a to form the extension strip 51 having the free edge surface 511. Step 4: Attach the pair of waterproof layers 53 on the first faces 11a of the pair of supporting fabric tapes 11 to cover the pair of supporting fabric tapes 11, the left filler part 411, the extension strip 51, the right filler part 412, at least part of the free edge surface 511 of the extension strip 51 and at least part of the free edge surface 411a of the left filler part 411.
As a result, the left filler part 411 has a width W1 larger than a width W2 of the right filler part 412, and the sum of the width W2 of the right filler part 412 and the width W3 of the extension strip 51 is approximately equal to the width W1 of the left filler part 411, i.e. W2+W3=W1.
It is to be noted that the pair of waterproof layers 53 includes a pair of downward extension parts 53a covering at least part of the free edge surface 511 and at least part of the free edge surface 411a, so that both the free edge of the extension strip 51 and the free edge of the left filler part 411 are outwardly extended.
Accordingly, when the coil-type fluid-impervious zipper is zipped up, the free edge surface 511 and the free edge surface 411a will be compressed to engage with each other substantially along the middle line of the central gap 12 to result in a much smaller gap between the free edge surface 511 and the free edge surface 411a relative to the first gap 43, thereby improving the fluid-impervious performance of the coil-type fluid-impervious zipper. In addition, the pair of waterproof layers 53 can be made of an elastomer capable of withstanding high temperatures and having a low coefficient of friction, so as to enhance the sliding performance of the coil-type fluid-impervious zipper, and the appearance thereof can present various patterns, colors, and can be light reflective.
Please refer to
The coil-type fluid-impervious zipper according to the seventh embodiment of the invention is produced by processing a zipper according to steps as follows: Step 1: Zip up the zipper, and then inject a molten volume of the first thermoplastic elastomer 4 into the central gap 12 to form the filler structure 41. Step 2: Divide the filler structure 41 substantially along the middle line of the central gap 12 to form the left filler structure composed of the left filler part 411 and the left half of the caulking structure 42, and the right filler structure composed of the right filler part 412 and the right half of the caulking structure 42 (shown in
Step 3: Separate the zipper, and then use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 411a to form an extension strip 51 having a free edge surface 511.
Step 4: Zip up the zipper, and then perform a bonding operation to bond the extension strip 51 to the right filler part 412 to form the combined strip 6, which includes the left filler part 411, the extension strip 51 and the right filler part 412. Step 5: Divide the combined strip 6 substantially along the middle line of the central gap 12 to form the left combined strip 611 and the right combined strip 612, where the left combined strip 611 has the free edge surface 611a, the right combined strip 612 has the free edge surface 612a, and there exists the third gap 61 between the free edge surface 611a and the free edge surface 612a. In addition, the bonding operation can be an adhesive bonding operation, a heat bonding operation, or other equivalent or alternative bonding operations.
Accordingly, the pair of chains will have a substantially same width of elastomer to facilitate the zip-up operation of the coil-type fluid-impervious zipper using a slider and prevent wearing between the chains and the slider when using the slider to zip up the pair of chains. When the coil-type fluid-impervious zipper is zipped up, the free edge surface 611a and the free edge surface 612a will be compressed to engage with each other substantially along the middle line of the central gap 12 to result in a much smaller gap between the free edge surface 611a and the free edge surface 612a relative to the first gap 43.
Please refer to
The coil-type fluid-impervious zipper according to the eighth embodiment of the invention is produced by processing a zipper according to steps as follows: Step 1: Zip up the zipper, and then inject a molten volume of the first thermoplastic elastomer 4 into the central gap 12 to form the filler structure 41. Step 2: Divide the filler structure 41 substantially along the middle line of the central gap 12 to form the left filler structure composed of the left filler part 411 and the left half of the caulking structure 42, and the right filler structure composed of the right filler part 412 and the right half of the caulking structure 42 (shown in
Step 3: Separate the zipper, and then use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 411a to form an extension strip 51 having a free edge surface 511.
Step 4: Zip up the zipper, and then perform a bonding operation to bond the extension strip 51 to the right filler part 412 to form the combined strip 6, which includes the left filler part 411, the extension strip 51 and the right filler part 412. Step 5: Attach a waterproof layer on the first faces 11a of the pair of supporting fabric tapes 11 and on the combined strip 6, where the waterproof layer can be a thermoplastic elastomer coating or a polymer film. Step 6: Divide the waterproof layer together with the combined strip 6 substantially along the middle line of the central gap 12 to form the pair of waterproof layers 53, the left combined strip 611 and the right combined strip 612, where the left combined strip 611 has the free edge surface 611a, the right combined strip 612 has the free edge surface 612a, and there exists a fourth gap 62 between the free edge surface 611a and the free edge surface 612a. In addition, the bonding operation can be an adhesive bonding operation, a heat bonding operation, or other equivalent or alternative bonding operations.
Accordingly, the pair of chains will have a substantially same width of elastomer to facilitate the zip-up operation of the coil-type fluid-impervious zipper using a slider and prevent wearing between the chains and the slider when using the slider to zip up the pair of chains. When the coil-type fluid-impervious zipper is zipped up, the free edge surface 611a and the free edge surface 612a will be compressed to engage with each other substantially along the middle line of the central gap 12 to result in a much smaller gap between the free edge surface 611a and the free edge surface 612a relative to the first gap 43.
Please refer to
The coil-type fluid-impervious zipper according to the ninth embodiment of the invention is produced by processing a zipper according to steps as follows: Step 1: Zip up the zipper, and then inject a molten volume of the first thermoplastic elastomer 4 into the central gap 12 to form the filler structure 41. Step 2: Divide the filler structure 41 substantially along the middle line of the central gap 12 to form the left filler structure composed of the left filler part 411 and the left half of the caulking structure 42, and the right filler structure composed of the right filler part 412 and the right half of the caulking structure 42 (shown in
Step 3: Separate the zipper, and then use an injection unit to inject a molten volume of the second thermoplastic elastomer 5 via a tiny nozzle onto the free edge surface 411a to form an extension strip 51 having a free edge surface 511.
Step 4: Zip up the zipper, and then perform a bonding operation to bond the extension strip 51 to the right filler part 412 to form the combined strip 6, which includes the left filler part 411, the extension strip 51 and the right filler part 412. Step 5: Attach a waterproof layer on the first faces 11a of the pair of supporting fabric tapes 11 and on the combined strip 6, where the waterproof layer can be a thermoplastic elastomer coating or a polymer film. Step 6: Divide the waterproof layer together with the combined strip 6 substantially along the middle line of the central gap 12 to form the pair of waterproof layers 53, the left combined strip 611 and the right combined strip 612, where the left combined strip 611 has the free edge surface 611a, the right combined strip 612 has the free edge surface 612a, and there exists the fourth gap 62 between the free edge surface 611a and the free edge surface 612a. In addition, the bonding operation can be an adhesive bonding operation, a heat bonding operation, or other equivalent or alternative bonding operations.
Step 7: Separate the zipper, and then attach the pair of cap layers 7 on at least part of the pair of waterproof layers 53, the free edge surface 611a and the free edge surface 612a. The pair of cap layers 7 has a left downward extension part 711 and a right downward extension part 712 covering at least part of the free edge surface 611a and at least part of the free edge surface 612a respectively, the left downward extension part 711 has a free edge surface 711a, the right downward extension part 712 has a free edge surface 712a, and there exists a fifth gap 8 between the free edge surface 711a and the free edge surface 712a. In addition, the pair of cap layers 7 can be made of a two-layer elastomer film.
Accordingly, the pair of chains will have a substantially same width of elastomer to facilitate the zip-up operation of the coil-type fluid-impervious zipper using a slider and prevent wearing between the chains and the slider when using the slider to zip up the pair of chains. When the coil-type fluid-impervious zipper is zipped up, the free edge surface 711a and the free edge surface 712a will be compressed to engage with each other substantially along the middle line of the central gap 12 to result in a much smaller gap between the free edge surface 711a and the free edge surface 712a relative to the first gap 43.
In addition, the pair of supporting fabric tapes 11 can be made from polyester fibers, polyamide fibers, or polyolefin fibers, etc., so that it can be congruent to or have similar polymer polarity to the pair of waterproof layers 53 to enhance the binding fastness of the pair of waterproof layers 53 with the pair of supporting fabric tapes 11, and make it possible that the pair of waterproof layers 53 and the pair of supporting fabric tapes 11 can be recycled together to meet some environmental protection requirements. For example, when the pair of waterproof layers 53 is made of a polyester elastomer, the pair of supporting fabric tapes 11 can be made from a polyester fiber; when the pair of waterproof layers 53 is made of a polyamide elastomer or a polyurethane elastomer, the pair of supporting fabric tapes 11 can be made from a polyamide fiber; and when the pair of waterproof layers 53 is made of a polyolefin elastomer, the pair of supporting fabric tapes 11 can be made from a polyethylene fiber or a polypropylene fiber.
In addition, at least one of the first face 11a and the second face 11b of the pair of supporting fabric tapes 11 can be impregnated with an adhesive, such as a waterborne polyurethane or a solvent-type adhesive, or coated with an adhesive, such as a reactive hot-melt adhesive, or a moisture-hardening polyurethane, to improve the binding fastness of the pair of waterproof layers 53 with the pair of supporting fabric tapes 11. In addition, depending on the requirements, the waterproof layer can be a thermoplastic elastomer coating on the pair of supporting fabric tapes 11, or an elastomeric membrane attached on the pair of supporting fabric tapes 11.
In addition, the pair of supporting fabric tapes 11 can be stretchable in the warp and/or the weft direction to offer flexibility.
In addition, the second faces 11b of the pair of supporting fabric tapes 11 and coupling elements 2 can further undergo a water-repellent treatment to prevent fluid from infiltrating into the first gap 43 and the second gap 52, thereby enhancing the water proof effect of the coil-type fluid-impervious zipper 1.
To be more specific, the second faces 11b of the pair of supporting fabric tapes 11 and coupling elements 2 can be impregnated with a water-repellent agent to enhance the water proof effect of the coil-type fluid-impervious zipper 1.
Based on the foregoing designs, the invention can offer the advantages as follows:
While the invention has been described by way of example and in terms of preferred embodiments, it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.
| Number | Date | Country | Kind |
|---|---|---|---|
| 113102467 | Jan 2024 | TW | national |
| 113145367 | Nov 2024 | TW | national |
