Zipper attaching process, zipper pocket and waterproof garment

Abstract

The invention provides a zipper attaching process, a zipper pocket and a waterproof garment. The zipper attaching technology comprises the following steps that a zipper and a main body fabric are bonded through a hot melt adhesive, and zipper attaching is completed; the bonding comprises primary hot pressing, primary cold pressing and shaping, secondary hot pressing and secondary cold pressing and shaping; the temperature of the primary hot pressing is 145-155 DEG C; the temperature of the secondary hot pressing is 156-165 DEG C. According to the zipper attaching process, the zipper attaching flatness can be improved, the attaching effect is good, and the high waterproof effect can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of clothing products, and in particular relates to a zipper laminating process, a zipper pocket and waterproof clothing. Background Art

[0002] As a clothing accessory, zippers are a crucial element, impacting both the overall aesthetics and functionality of a garment. As people's demands for clothing diversify, waterproofing has naturally become a key consideration, particularly for pockets, as items placed within them often need to be protected from water.

[0003] Existing zipper lamination processes mostly use sewing and partial gluing, which has the following defects: 1. The stitching area causes an uneven surface, requiring additional covering tape and easily causing edge warping; 2. The glue layer is unevenly heated during the hot pressing process, which can easily cause bubbles or glue overflow; 3. Zipper reinforcement relies on stitching, which is a complex process and the stitching position can easily damage the waterproofness of the main fabric; 4. Traditional molds are difficult to adapt to diverse bag opening shapes.

[0004] Therefore, it is necessary to develop a zipper laminating process that can improve the zipper laminating flatness, have a good laminating effect, and achieve a high waterproof effect. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a zipper laminating process, a zipper pocket and waterproof clothing. The zipper laminating process can improve the flatness of the zipper laminating, achieve a good laminating effect and achieve a high waterproof effect.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a zipper bonding process, which includes the following steps: bonding the zipper to the main fabric with hot melt adhesive to complete the zipper bonding; the bonding includes one hot pressing, one cold pressing and shaping, two hot pressing and two cold pressing; the temperature of the one hot pressing is 145-155°C (for example, 146°C, 147°C, 148°C, 149°C, 150°C, 151°C, 152°C, 153°C or 154°C, etc.); the temperature of the two hot pressing is 156-165°C (for example, 157°C, 158°C, 159°C, 160°C, 161°C, 162°C, 163°C or 164°C, etc.).

[0008] In the present invention, the zipper bonding process includes bonding the zipper and the main fabric by hot melt adhesive to complete the zipper bonding, and the bonding includes one hot pressing, one cold pressing and shaping, two hot pressing and two cold pressing and shaping, the one hot pressing realizes the melting of the hot melt adhesive, and part of the hot melt adhesive penetrates into the main fabric, bonding the main fabric and the zipper together, and the two hot pressing makes the hot melt adhesive further penetrate into the main fabric, thereby increasing the bonding strength between the zipper and the main fabric and reducing the thickness of the adhesive layer. Through the bonding method of one hot pressing, one cold pressing and shaping, two hot pressing and two cold pressing and shaping, and controlling the temperature of the one hot pressing at 145-155°C and the temperature of the second hot pressing at 156-165°C, the zipper and the main fabric can achieve a better bonding effect, high bonding strength, thin adhesive layer thickness, and will not cause damage to the main fabric; the zipper and the main fabric are bonded by hot melt adhesive to achieve seamless processing, which can avoid surface unevenness and damage to waterproofness caused by the stitching part when the stitching is fixed.

[0009] Preferably, the pressure of the primary hot pressing is 4.5 to 5.5 kg (for example, 4.6 kg, 4.7 kg, 4.8 kg, 4.9 kg, 5.0 kg, 5.1 kg, 5.2 kg, 5.3 kg or 5.4 kg, etc.).

[0010] Preferably, the time of the primary hot pressing is 10 to 20 seconds, for example, 11 seconds, 12 seconds, 13 seconds, 14 seconds, 15 seconds, 16 seconds, 17 seconds, 18 seconds or 19 seconds.

[0011] Preferably, the primary hot pressing is carried out under the protection of Teflon insulation paper.

[0012] In the present invention, the process of performing the process under the protection of Teflon insulation paper means covering the surface of the heating plate of the heat press with Teflon insulation paper to perform heat pressing, so as to prevent the zipper and the main body fabric from directly contacting the heating plate.

[0013] Preferably, the pressure of the secondary hot pressing is 5.6-6.5 kg (for example, 5.7 kg, 5.8 kg, 5.9 kg, 6.0 kg, 6.1 kg, 6.2 kg, 6.3 kg or 6.4 kg, etc.).

[0014] In the present invention, the pressure of the secondary hot pressing is preferably 5.6 to 6.5 kg, which can achieve excellent bonding effect between the zipper and the main fabric without damaging the hot melt adhesive and the main fabric. If the pressure is too high, it is easy to damage the main fabric and the hot melt adhesive. If the pressure is too low, the peeling strength is low.

[0015] Preferably, the secondary hot pressing time is 4 to 8 seconds, for example, 4.5 seconds, 5 seconds, 5.5 seconds, 6 seconds, 6.5 seconds, 7 seconds or 7.5 seconds.

[0016] Preferably, the secondary hot pressing is carried out under the protection of a high-temperature resistant silicone pad.

[0017] Preferably, the thickness of the high temperature resistant silicone pad is 0.3 to 0.8 cm, for example, 0.35 cm, 0.4 cm, 0.45 cm, 0.5 cm, 0.55 cm, 0.6 cm, 0.65 cm, 0.7 cm or 0.75 cm.

[0018] Preferably, the Shore hardness of the high temperature resistant silicone pad is 55-65A, for example, 56A, 57A, 58A, 59A, 60A, 61A, 62A, 63A or 64A.

[0019] Preferably, the heat-resistant temperature of the high-temperature resistant silicone pad is ≥250°C, such as 260°C, 270°C, 280°C, 290°C or 300°C.

[0020] In the present invention, the process of hot pressing under the protection of a high-temperature resistant silicone pad means covering the high-temperature resistant silicone pad on the surface of the heating plate of the hot press to prevent the zipper and the main fabric from directly contacting the heating plate. The rigid support of the high-temperature resistant silicone pad can enable the hot melt adhesive to flow further during the secondary hot pressing, expel residual bubbles, and allow the hot melt adhesive to further penetrate into the main fabric, thereby increasing the bonding strength between the zipper and the main fabric and reducing the thickness of the adhesive layer. The thickness of the high-temperature resistant silicone pad is preferably 0.3 to 0.8 cm, and the Shore hardness is preferably 55 to 65 A, which can ensure uniform pressure transmission while avoiding excessive compression of the main fabric.

[0021] Preferably, the temperature of the first cold press setting and the second cold press setting are independently ≤16°C, such as 8°C, 9°C, 10°C, 11°C, 12°C, 13°C, 14°C or 15°C.

[0022] Preferably, the pressure of the primary cold pressing and the secondary cold pressing is independently 4.5 to 5.5 kg (for example, 4.6 kg, 4.7 kg, 4.8 kg, 4.9 kg, 5.0 kg, 5.1 kg, 5.2 kg, 5.3 kg or 5.4 kg, etc.).

[0023] Preferably, the time for the primary cold pressing and the secondary cold pressing is independently 5 to 15 seconds, for example, 6 seconds, 7 seconds, 8 seconds, 9 seconds, 10 seconds, 11 seconds, 12 seconds, 13 seconds or 14 seconds.

[0024] Preferably, the main body fabric comprises waterproof fabric.

[0025] Preferably, the main body fabric is a main body fabric provided with a pocket.

[0026] Preferably, the length of the zipper is 1 to 2 cm longer than the length of the bag opening, for example, 1.1 cm, 1.2 cm, 1.3 cm, 1.4 cm, 1.5 cm, 1.6 cm, 1.7 cm, 1.8 cm or 1.9 cm.

[0027] In the present invention, the length of the zipper is 1 to 2 cm longer than the length of the bag opening, so as to leave a margin for coating hot melt adhesive and bonding with the main fabric.

[0028] Preferably, the hot melt adhesive comprises thermoplastic polyurethane hot melt adhesive.

[0029] In the present invention, the temperature of the first hot pressing is controlled at 145-155°C and the temperature of the second hot pressing is controlled at 156-165°C. If the temperature is too low, the hot melt adhesive melts unevenly, resulting in insufficient bonding strength. If the temperature is too high, the higher temperature may destroy the waterproof coating structure in the waterproof fabric, affecting the waterproof performance.

[0030] Preferably, the zipper is a high temperature resistant and waterproof zipper.

[0031] Preferably, the high temperature resistant and waterproof zipper comprises a nylon zipper.

[0032] In the present invention, the high temperature resistance means a heat resistance temperature of 160-180°C, such as 162°C, 164°C, 166°C, 168°C, 170°C, 172°C, 174°C, 176°C or 178°C.

[0033] Preferably, the nylon zipper comprises a YKK No. 3 nylon zipper.

[0034] Preferably, the zipper includes a zipper tape, zipper teeth and a zipper lock, the surface of the zipper provided with the zipper lock protrusion is the front side, the surface of the zipper not provided with the zipper lock protrusion is the back side, the top end of the zipper is located at the end close to the zipper lock when the zipper teeth are closed, and the bottom end of the zipper is located at the end away from the zipper lock when the zipper teeth are closed.

[0035] Preferably, the zipper is provided with a first sewing line and a second sewing line, the first sewing line is located at an end close to the zipper lock when the zipper teeth are closed, and the second sewing line is located at an end away from the zipper lock when the zipper teeth are closed.

[0036] Preferably, the distance between the top of the zipper and the first sewing line is 0.5 to 1.5 cm, for example, 0.6 cm, 0.7 cm, 0.8 cm, 0.9 cm, 1.0 cm, 1.1 cm, 1.2 cm, 1.3 cm or 1.4 cm.

[0037] Preferably, the distance between the bottom end of the zipper and the second sewing line is 0.5 to 1.5 cm, for example, 0.6 cm, 0.7 cm, 0.8 cm, 0.9 cm, 1.0 cm, 1.1 cm, 1.2 cm, 1.3 cm or 1.4 cm.

[0038] In the present invention, the first sewing line and the second sewing line are formed by sewing backstitches at both ends of the zipper, which can enhance the tensile resistance.

[0039] Preferably, reinforcing fabrics are provided at the first and second sewing lines on the reverse side of the zipper.

[0040] In the present invention, by providing reinforcing fabrics at the top and bottom of the zipper to cover the first and second sewing lines respectively, the sewing parts of the first and second sewing lines can be concealed to have better aesthetics and the adhesion strength of the zipper can be enhanced.

[0041] Preferably, the reinforced fabric is cut into a desired size by laser cutting.

[0042] Preferably, the reinforced fabric is knitted fabric.

[0043] Preferably, the color of the cot is the same as the color of the back of the main fabric.

[0044] In the present invention, the back surface of the main fabric and the reverse surface of the zipper are located on the same side.

[0045] Preferably, the zipper laminating process comprises the following steps:

[0046] (1) Hot melt adhesive is pasted on one side of the zipper tape, and a zipper lock is installed on the zipper teeth to form a zipper. The zipper lock protrusion is located on the side of the zipper tape pasted with hot melt adhesive. The side of the zipper provided with the zipper lock protrusion is the front side, and the side without the zipper lock protrusion is the back side. The first sewing line and the second sewing line are sewn to obtain a first glued zipper.

[0047] (2) Hot melt adhesive is applied to the first and second seam lines on the front of the first glued zipper obtained in step (1) to obtain a second glued zipper.

[0048] (3) Pre-fix the front of the second glued zipper obtained in step (2) with the main fabric provided with the pocket, adhere the reinforcing fabric to the first and second sewing lines on the back of the second glued zipper by hot melt adhesive, and perform one hot pressing, one cold pressing, two hot pressing and two cold pressing on the front half and the back half of the second glued zipper respectively to complete the zipper bonding.

[0049] In the present invention, in order to facilitate placing the zipper tape into the gluing machine for affixing the hot melt adhesive, it is preferred to affix the hot melt adhesive to the zipper tape first and then install the zipper lock on the zipper teeth.

[0050] Preferably, the bag opening in step (3) is made by laser cutting.

[0051] In the present invention, laser cutting is used to ensure that the edges are smooth and burr-free, the process time is reduced, and the production efficiency is high.

[0052] Preferably, the pre-fixing in step (3) includes pre-fixing with an iron.

[0053] Preferably, the pre-fixing temperature is 110-130°C, for example, 112°C, 114°C, 116°C, 118°C, 120°C, 122°C, 124°C, 126°C or 128°C.

[0054] Preferably, the pre-fixation time is 3 to 10 seconds, for example, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds or 9 seconds.

[0055] Preferably, taking the length of the second glued zipper as 100%, the length of the front half of the second glued zipper is 40% to 60%, for example, 42%, 44%, 46%, 48%, 50%, 52%, 54%, 56% or 58%.

[0056] In the present invention, the front half and the back half refer to the second adhesive zipper being divided into two sections along the length direction, one section being the front half and the other being the back half. The front half of the second adhesive zipper can be the end closest to the zipper lock when the zipper teeth are closed, or the end farther from the zipper lock when the zipper teeth are closed. When the front half is subjected to a single heat press, a single cold press, a second heat press, and a second cold press, the zipper lock is located in the back half. When the back half is subjected to a single heat press, a single cold press, a second heat press, and a second cold press, the zipper lock is located in the front half to avoid being affected by the zipper lock during the hot and cold press processes.

[0057] Preferably, the nozzle temperature of the gluing machine is 350-380°C, for example, 353°C, 358°C, 361°C, 363°C, 365°C, 368°C, 371°C, 374°C or 377°C.

[0058] Preferably, the glue feeding speed of the glue applicator is 4 to 8 feet per minute, such as 4.5 feet per minute, 5 feet per minute, 5.5 feet per minute, 6 feet per minute, 6.5 feet per minute, 7 feet per minute or 7.5 feet per minute.

[0059] Preferably, the pressure of the air nozzle of the gluing machine is 0.03-0.04 MPa, for example, 0.031 MPa, 0.032 MPa, 0.033 MPa, 0.034 MPa, 0.035 MPa, 0.036 MPa, 0.037 MPa, 0.038 MPa or 0.039 MPa.

[0060] Preferably, the wheel pressure of the gluing machine is 0.4-0.5 MPa, for example, 0.41 MPa, 0.42 MPa, 0.43 MPa, 0.44 MPa, 0.45 MPa, 0.46 MPa, 0.47 MPa, 0.48 MPa or 0.49 MPa.

[0061] In a second aspect, the present invention provides a zipper pocket, wherein the zipper pocket is zipper-attached using the zipper-attaching process described in the first aspect.

[0062] In a third aspect, the present invention provides a waterproof garment, wherein a zipper is provided on the waterproof garment, and the zipper is attached to the waterproof garment using the zipper attaching process as described in the first aspect.

[0063] Compared with the prior art, the present invention has the following beneficial effects:

[0064] In the present invention, the zipper and the main fabric are bonded better through the optimization of the process and parameters. The thickness of the adhesive layer is thin, which can reduce the height difference between the main fabric and the zipper position caused by the thickness of the adhesive layer after the zipper is bonded, avoid the problem of edge warping and will not cause damage to the main fabric. Through the bonding process of one hot pressing, one cold pressing, two hot pressing and two cold pressing, the bonding strength is made higher, which can avoid the bonding failure caused by residual bubbles in the hot melt adhesive. In the present invention, the zipper and the main fabric are bonded by hot melt adhesive, and the full adhesive bonding replaces the traditional stitching to achieve seamless processing, which can avoid the surface unevenness and damage to the waterproofness caused by the stitching part, and the waterproof performance is greatly improved. The zipper bonding process of the present invention can achieve a thickness of the adhesive layer between the zipper and the main fabric of less than 0.05mm, and can form an invisible zipper bonding with a flat and nearly zero-thickness adhesive layer. The peel strength is ≥13N / cm, which can achieve a high waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 This is a schematic structural diagram of the front side of the first adhesive zipper provided in Example 1;

[0066] Among them, 1-zipper teeth; 2-zipper lock; 3-zipper tape; 4-first sewing line; 5-second sewing line; 6-hot melt adhesive on the zipper tape;

[0067] Figure 2 This is a schematic structural diagram of the reverse side of the first adhesive zipper provided in Example 1;

[0068] Among them, 3-zipper tape; 4-first sewing line; 5-second sewing line;

[0069] Figure 3 This is a schematic diagram of the structure of the semicircular hot melt adhesive in Example 1. DETAILED DESCRIPTION

[0070] The technical solution of the present invention is further described below by way of specific embodiments. It should be understood by those skilled in the art that the embodiments are merely to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0071] The sources of some components in the following examples and comparative examples are as follows:

[0072] Zipper: YKK No. 3 nylon zipper, width 2.5cm, zipper tape thickness 0.07cm.

[0073] Main fabric: The manufacturer is Gore, the brand is bnrspL 70LR / TR2.

[0074] Hot melt adhesive: The manufacturer is Jiangmen Duokuaihaosheng Adhesive Technology Co., Ltd., and the brand name is HM-Y02.

[0075] Reinforced fabric: double-sided cotton, manufacturer Jiangsu Sanfeng Special Materials Technology Co., Ltd.

[0076] Sewing thread: Coats 60 / 3 fine cotton thread.

[0077] Example 1

[0078] This embodiment provides a zipper laminating process, which includes the following steps:

[0079] (1) Using a gluing machine (Gaoke AI118 machine ARC) to apply hot melt adhesive to the zipper tape, the nozzle temperature of the gluing machine is 370°C, the glue feeding speed is 6 feet per minute, the nozzle pressure is 0.035 MPa, the wheel pressure is 0.44 MPa, and the thickness of the hot melt adhesive applied to the zipper tape is 0.2 mm;

[0080] Then, install the zipper lock on the zipper teeth to form a zipper. The zipper lock protrusion is located on the side of the zipper tape with hot melt adhesive. The side of the zipper with the zipper lock protrusion is the front side, and the side without the zipper lock protrusion is the back side. Use a zipper trimmer to adjust the total length of the zipper to 18.5 cm; use sewing thread to sew backstitch on the zipper 1 cm away from the top end of the zipper to form the first sewing line; use sewing thread to sew backstitch on the zipper 1 cm away from the bottom end of the zipper to form the second sewing line, thus obtaining the first glued zipper. The front and back sides of the first glued zipper are as shown in the figure. Figure 1 and Figure 2As shown, the first glued zipper includes zipper teeth 1, a zipper lock 2, a zipper tape 3, a first sewing thread 4, a second sewing thread 5 and hot melt adhesive 6 on the zipper tape.

[0081] (2) Laser cutting two semicircular hot melt adhesives, the semicircular structure is as follows Figure 3 As shown, where a=1.3 cm, b=2 cm, c=0.5 cm, and d=1 cm, the thickness of the semicircular hot melt adhesive is 0.2 mm, and two semicircular hot melt adhesives are respectively attached to the first sewing line position and the second sewing line position on the front side of the first glued zipper obtained in step (1) to obtain a second glued zipper.

[0082] (3) Punching the main fabric required for making the bag with a punch, the length of the bag opening being 17 cm;

[0083] Laser cutting was used to prepare two reinforcement fabrics with a size of 3.2 cm × 2.2 cm;

[0084] Place the second glued zipper obtained in step (2) below the pocket of the main fabric, with the middle of the second glued zipper coinciding with the middle of the pocket, and pre-fix the second glued zipper and the main fabric with an iron at a temperature of 120° C. for 5 seconds;

[0085] On the reverse side of the second glued zipper, use hot melt adhesive to adhere two reinforcement fabrics to the first and second seams, respectively. Use an iron to pre-fix them at 120°C for 5 seconds, so that the reinforcement fabrics cover the first and second seams.

[0086] First, the front half of the second glued zipper (the length of the second glued zipper is 100%, the length of the front half of the second glued zipper is 50%, and the front half is the end close to the zipper lock when the zipper teeth are closed) is bonded to the main fabric. Specifically, Teflon insulation paper (thickness of 0.08 mm) is placed on the upper and lower heating plates of the hot press, and the pre-fixed second glued zipper and the main fabric are placed between the Teflon insulation papers. A hot press is performed (temperature of 150°C, pressure of 5 kg, time of 15s), and the Teflon insulation paper is removed and a cold press is performed (temperature of 15°C, pressure of 5 kg, time of 10s) to obtain a bonded product that has been cold pressed and hot pressed once. High-temperature resistant adhesives are placed on the upper and lower heating plates of the hot press. Silicone pads (thickness 0.5 cm, Shore hardness 60A, maximum heat resistance temperature 300°C), the above-mentioned laminated products that have been cold pressed and hot pressed once are placed between the high-temperature resistant silicone pads, and secondary hot pressing (temperature 160°C, pressure 6 kg, time 5s) is performed and the high-temperature resistant silicone pads are removed for secondary cold pressing (temperature 15°C, pressure 5 kg, time 10s). When the front half of the second glued zipper is laminated with the main fabric, the zipper lock is located in the back half. Then the back half of the second glued zipper is laminated with the main fabric, and the above-mentioned primary hot pressing, primary cold pressing, secondary hot pressing and secondary cold pressing are repeated. When the back half of the second glued zipper is laminated, the zipper lock is located in the front half, and the zipper lamination is completed.

[0087] Example 2

[0088] This embodiment provides a zipper laminating process, which includes the following steps:

[0089] (1) Using a gluing machine (Gaoke AI118 machine ARC) to apply hot melt adhesive to the zipper tape, the nozzle temperature of the gluing machine is 370°C, the glue feeding speed is 6 feet per minute, the nozzle pressure is 0.035 MPa, the wheel pressure is 0.44 MPa, and the thickness of the hot melt adhesive applied to the zipper tape is 0.2 mm;

[0090] Then, a zipper lock is installed on the zipper teeth to form a zipper, with the zipper lock protrusion located on the side of the zipper tape where the hot melt adhesive is adhered. The side of the zipper with the zipper lock protrusion is the front side, and the side without the zipper lock protrusion is the back side. A zipper trimmer is used to adjust the total length of the zipper to 19 cm; a backstitch is sewn on the zipper at a position 0.8 cm away from the top end of the zipper using sewing thread to form a first stitch line; a backstitch is sewn on the zipper at a position 0.8 cm away from the bottom end of the zipper using sewing thread to form a second stitch line, thereby obtaining a first glued zipper.

[0091] (2) Laser cutting two semicircular hot melt adhesives, the semicircular structure is as follows Figure 3As shown, where a=1.3 cm, b=2 cm, c=0.5 cm, and d=1 cm, the thickness of the semicircular hot melt adhesive is 0.2 mm, and two semicircular hot melt adhesives are respectively attached to the first sewing line position and the second sewing line position on the front side of the first glued zipper obtained in step (1) to obtain a second glued zipper.

[0092] (3) Punching the main fabric required for making the bag with a punch, the length of the bag opening being 17 cm;

[0093] Laser cutting was used to prepare two reinforcement fabrics with a size of 3.2 cm × 2.2 cm;

[0094] Place the second glued zipper obtained in step (2) below the pocket of the main fabric, with the middle of the second glued zipper coinciding with the middle of the pocket, and pre-fix the second glued zipper and the main fabric with an iron at a temperature of 120° C. for 5 seconds;

[0095] On the reverse side of the second glued zipper, use hot melt adhesive to adhere two reinforcement fabrics to the first and second seams, respectively. Use an iron to pre-fix them at 120°C for 5 seconds, so that the reinforcement fabrics cover the first and second seams.

[0096] First, the front half of the second glued zipper (the length of the second glued zipper is 100%, the length of the front half of the second glued zipper is 50%, and the front half is the end close to the zipper lock when the zipper teeth are closed) is bonded to the main fabric. Specifically, Teflon insulation paper (thickness of 0.08 mm) is placed on the upper and lower heating plates of the hot press, and the pre-fixed second glued zipper and the main fabric are placed between the Teflon insulation papers. A hot press is performed (temperature of 145°C, pressure of 5.5 kg, time of 18 seconds), and the Teflon insulation paper is removed and a cold press is performed (temperature of 10°C, pressure of 5.5 kg, time of 8 seconds) to obtain a bonded product that has been cold pressed and hot pressed once. High-temperature resistant adhesives are placed on the upper and lower heating plates of the hot press. Silicone pads (thickness 0.5 cm, Shore hardness 60A, maximum heat resistance temperature 300°C), the above-mentioned laminated products that have been cold pressed and hot pressed once are placed between the high-temperature resistant silicone pads, and secondary hot pressing (temperature 158°C, pressure 6.5 kg, time 8s) is performed and the high-temperature resistant silicone pads are removed for secondary cold pressing (temperature 10°C, pressure 5.5 kg, time 8s). When the front half of the second glued zipper is laminated with the main fabric, the zipper lock is located in the back half. Then the back half of the second glued zipper is laminated with the main fabric, and the above-mentioned first hot pressing, first cold pressing, second hot pressing and second cold pressing are repeated. When the back half of the second glued zipper is laminated, the zipper lock is located in the front half, and the zipper lamination is completed.

[0097] Example 3

[0098] This embodiment provides a zipper laminating process, which includes the following steps:

[0099] (1) Using a gluing machine (Gaoke AI118 machine ARC) to apply hot melt adhesive to the zipper tape, the nozzle temperature of the gluing machine is 370°C, the glue feeding speed is 6 feet per minute, the nozzle pressure is 0.035 MPa, the wheel pressure is 0.44 MPa, and the thickness of the hot melt adhesive applied to the zipper tape is 0.2 mm;

[0100] Then, a zipper lock is installed on the zipper teeth to form a zipper, with the zipper lock protrusion located on the side of the zipper tape where the hot melt adhesive is attached. The side of the zipper with the zipper lock protrusion is the front side, and the side without the zipper lock protrusion is the back side. A zipper trimmer is used to adjust the total length of the zipper to 18.8 cm; a backstitch is sewn on the zipper 1.2 cm away from the top end of the zipper using sewing thread to form a first stitch line; a backstitch is sewn on the zipper 1.2 cm away from the bottom end of the zipper using sewing thread to form a second stitch line, thereby obtaining a first glued zipper.

[0101] (2) Laser cutting two semicircular hot melt adhesives, the semicircular structure is as follows Figure 3 As shown, where a=1.3 cm, b=2 cm, c=0.5 cm, and d=1 cm, the thickness of the semicircular hot melt adhesive is 0.2 mm, and two semicircular hot melt adhesives are respectively attached to the first sewing line position and the second sewing line position on the front side of the first glued zipper obtained in step (1) to obtain a second glued zipper.

[0102] (3) Punching the main fabric required for preparing the pocket with a punch press to cut the pocket opening to a length of 17 cm, which is 1.8 cm shorter than the length of the second glued zipper;

[0103] Laser cutting was used to prepare two reinforcement fabrics with a size of 3.2 cm × 2.2 cm;

[0104] Place the second glued zipper obtained in step (2) below the pocket of the main fabric, with the middle of the second glued zipper coinciding with the middle of the pocket, and pre-fix the second glued zipper and the main fabric with an iron at a temperature of 120° C. for 5 seconds;

[0105] On the reverse side of the second glued zipper, use hot melt adhesive to adhere two reinforcement fabrics to the first and second seams, respectively. Use an iron to pre-fix them at 120°C for 5 seconds, so that the reinforcement fabrics cover the first and second seams.

[0106] First, the front half of the second glued zipper (the length of the second glued zipper is 100%, the length of the front half of the second glued zipper is 50%, and the front half is the end close to the zipper lock when the zipper teeth are closed) is bonded to the main fabric. Specifically, Teflon insulation paper (thickness of 0.08 mm) is placed on the upper and lower heating plates of the hot press, and the pre-fixed second glued zipper and main fabric are placed between the Teflon insulation papers. A hot press is performed (temperature of 155°C, pressure of 4.5 kg, time of 12 seconds), and the Teflon insulation paper is removed and a cold press is performed (temperature of 16°C, pressure of 4.5 kg, time of 15 seconds) to obtain a bonded product that has been cold pressed and hot pressed once. High-temperature resistant adhesives are placed on the upper and lower heating plates of the hot press. Silicone pads (thickness of 0.5 cm, Shore hardness of 60A, maximum heat resistance temperature of 300°C), the above-mentioned laminated products that have been cold pressed and hot pressed once are placed between the high-temperature resistant silicone pads, and secondary hot pressing (temperature of 163°C, pressure of 5.6 kg, time of 4s) is performed and the high-temperature resistant silicone pads are removed for secondary cold pressing (temperature of 16°C, pressure of 4.5 kg, time of 15s). When the front half of the second glued zipper is laminated with the main fabric, the zipper lock is located in the back half. Then the back half of the second glued zipper is laminated with the main fabric, and the above-mentioned first hot pressing, first cold pressing, second hot pressing and second cold pressing are repeated. When the back half of the second glued zipper is laminated, the zipper lock is located in the front half, and the zipper lamination is completed.

[0107] Example 4

[0108] This embodiment provides a zipper laminating process, which differs from the embodiment 1 only in that step (3) does not include the step of laminating the reinforcing fabric on the reverse side of the second glued zipper, and other conditions are the same as those in the embodiment 1.

[0109] Comparative Example 1

[0110] This comparative example provides a zipper laminating process, which differs from Example 1 only in that the laminating of the front half and the back half of the second glued zipper to the main fabric in step (3) does not include a secondary hot pressing step, and other conditions are the same as those in Example 1.

[0111] Comparative Example 2

[0112] This comparative example provides a zipper laminating process, which differs from Example 1 only in that the temperature of the secondary hot pressing when laminating the front half and the back half of the second glued zipper to the main fabric in step (3) is adjusted to 170°C, and the other conditions are the same as those in Example 1.

[0113] Comparative Example 3

[0114] This comparative example provides a zipper laminating process, which differs from Example 1 only in that the temperature of the secondary hot pressing when laminating the front half and the back half of the second glued zipper to the main fabric in step (3) is adjusted to 150°C, and the other conditions are the same as those in Example 1.

[0115] The following tests were performed on the zipper attachment positions obtained by the zipper attachment processes provided in Examples 1 to 4 and Comparative Examples 1 to 3:

[0116] (1) Adhesive layer thickness: The total thickness of the zipper tape, main fabric, and adhesive layer at the location where the zipper tape and the main fabric are attached is recorded as h1. The thickness of the main fabric at the location where the zipper is not attached is recorded as h2. The thickness of the zipper tape before the zipper is attached is recorded as h3. The adhesive layer thickness h = h1-h2-h3.

[0117] (2) Waterproof performance: The test was conducted in accordance with the hydrostatic pressure method specified in GB / T 4744-2013 Testing and evaluation of the waterproof performance of textiles. A fabric hydrostatic pressure tester was used to test water seepage under different pressures. The test started at a pressure of 1000 mmH2O, with a pressure gradient of 1000 mmH2O, and ended at 7000 mmH2O. The maximum pressure at which no water seepage occurred was taken as the waterproof performance test result.

[0118] Peel strength: Refer to GB / T 2792-2014 Test method for peel strength of adhesive tapes to test the peel strength of the zipper and the main fabric at a 180° peeling angle.

[0119] The test results are shown in Table 1 below:

[0120] Table 1

[0121]

[0122]

[0123] As can be seen from the contents of Table 1, the zipper bonding position obtained by the zipper bonding process provided in Examples 1 to 4 has a smooth surface, the thickness of the adhesive layer between the zipper and the main fabric is less than 0.05 mm, and a flat, nearly zero-thickness adhesive layer can be formed for an invisible zipper bonding, the peel strength is ≥13 N / cm, and the waterproof performance is good.

[0124] Compared with Example 1, if the reinforcing fabric is not attached (Example 4), the peeling strength between the zipper and the main fabric is reduced.

[0125] Compared with Example 1, if the secondary hot pressing step is not included (Comparative Example 1), the peel strength between the zipper and the main fabric is reduced, and the thickness of the adhesive layer and the waterproof performance are reduced.

[0126] Compared with Example 1, if the temperature of the secondary hot pressing is too high (Comparative Example 2), the waterproof coating on the main fabric is easily damaged, and the waterproof effect is deteriorated.

[0127] Compared with Example 1, if the temperature of the secondary hot pressing is too low (Comparative Example 3), the fluidity of the hot melt adhesive cannot be effectively increased, the effect of removing bubbles and allowing the hot melt adhesive to further penetrate into the main fabric is poor, the peel strength is reduced, and the adhesive layer thickness is thicker.

[0128] The applicant states that while the above-described embodiments illustrate the process of the present invention, the present invention is not limited to the above-described process steps, nor does it imply that the present invention must rely on the above-described process steps for implementation. Those skilled in the art will appreciate that any improvements to the present invention, equivalent substitutions for the raw materials used, additions of auxiliary components, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

Claims

1. A zipper laminating process, characterized in that: The zipper laminating process comprises the following steps: bonding the zipper to the main fabric by hot melt adhesive to complete the zipper laminating; The bonding comprises a first heat pressing, a first cold pressing and setting, a second heat pressing and a second cold pressing and setting; The temperature of the primary hot pressing is 145-155°C; The temperature of the secondary hot pressing is 156-165°C.

2. The zipper laminating process according to claim 1, characterized in that: The pressure of the primary hot pressing is 4.5 to 5.5 kg; Preferably, the time of the first hot pressing is 10 to 20 seconds; Preferably, the primary hot pressing is carried out under the protection of Teflon insulation paper; Preferably, the pressure of the secondary hot pressing is 5.6-6.5 kg; Preferably, the secondary hot pressing time is 4 to 8 seconds; Preferably, the secondary hot pressing is carried out under the protection of a high temperature resistant silicone pad; Preferably, the thickness of the high temperature resistant silicone pad is 0.3 to 0.8 cm; Preferably, the Shore hardness of the high temperature resistant silicone pad is 55-65A; Preferably, the heat-resistant temperature of the high-temperature resistant silicone pad is ≥250°C.

3. The zipper laminating process according to claim 1 or 2, characterized in that: The temperature of the first cold press setting and the second cold press setting is independently ≤16°C; Preferably, the pressure of the first cold pressing and the second cold pressing is independently 4.5 to 5.5 kg; Preferably, the time for the first cold press setting and the second cold press setting is independently 5 to 15 seconds.

4. The zipper laminating process according to any one of claims 1 to 3, characterized in that: The main body fabric includes waterproof fabric; Preferably, the main fabric is a main fabric provided with a pocket; Preferably, the length of the zipper is 1 to 2 cm longer than the length of the bag opening; Preferably, the hot melt adhesive comprises thermoplastic polyurethane hot melt adhesive.

5. The zipper laminating process according to any one of claims 1 to 4, characterized in that: The zipper includes a high temperature resistant and waterproof zipper; Preferably, the high temperature resistant and waterproof zipper comprises a nylon zipper.

6. The zipper laminating process according to any one of claims 1 to 5, characterized in that: The zipper includes a zipper tape, zipper teeth, and a zipper lock. The surface of the zipper provided with the zipper lock protrusion is the front surface, and the surface of the zipper not provided with the zipper lock protrusion is the back surface. The top end of the zipper is located at the end close to the zipper lock when the zipper teeth are closed, and the bottom end of the zipper is located at the end away from the zipper lock when the zipper teeth are closed. Preferably, the zipper is provided with a first sewing line and a second sewing line, the first sewing line is located at an end close to the zipper lock when the zipper teeth are closed, and the second sewing line is located at an end away from the zipper lock when the zipper teeth are closed; Preferably, the distance between the top of the zipper and the first sewing line is 0.5 to 1.5 cm; Preferably, the distance between the bottom end of the zipper and the second sewing line is 0.5 to 1.5 cm; Preferably, a reinforcing fabric is provided at the first sewing line and the second sewing line on the reverse side of the zipper; Preferably, the reinforced fabric is korte cloth; Preferably, the color of the cot is the same as the color of the back of the main fabric.

7. The zipper laminating process according to claim 6, characterized in that: The zipper laminating process comprises the following steps: (1) Paste hot melt glue on one side of the zipper tape, install a zipper lock on the zipper teeth to form a zipper, the zipper lock protrusion is located on the side of the zipper tape pasted with hot melt glue, the side of the zipper provided with the zipper lock protrusion is the front side, and the side without the zipper lock protrusion is the back side, sew a first sewing line and a second sewing line to obtain a first glued zipper; (2) applying hot melt adhesive to the first and second seam lines on the front of the first glued zipper obtained in step (1) to obtain a second glued zipper; (3) Pre-fix the front of the second glued zipper obtained in step (2) with the main fabric provided with the pocket, adhere the reinforcing fabric to the first and second sewing lines on the back of the second glued zipper by hot melt adhesive, and perform one hot pressing, one cold pressing, two hot pressing and two cold pressing on the front half and the back half of the second glued zipper respectively to complete the zipper bonding.

8. The zipper laminating process according to claim 7, characterized in that: The bag opening in step (3) is made by laser cutting; Preferably, the pre-fixing in step (3) includes pre-fixing with an iron; Preferably, the pre-fixing temperature is 110-130°C; Preferably, the pre-fixation time is 3 to 10 seconds; Preferably, based on the length of the second glued zipper being 100%, the length of the front half of the second glued zipper is 40% to 60%.

9. A zipper pocket, characterized in that: The zipper pocket is zippered using the zipper laminating process according to any one of claims 1 to 8.

10. A waterproof garment, characterized in that: The waterproof clothing is provided with a zipper, and the waterproof clothing is zipper-attached using the zipper-attaching process according to any one of claims 1 to 8.

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