Zipper tape and airtight zipper

Abstract

The zipper tape comprises a plastic zipper tape body and a plurality of zipper teeth, a U-shaped groove is formed in the edge of the front face of the plastic zipper tape body, a plurality of inserting holes are evenly formed in the bottom of the groove, the zipper teeth are connected to the back face of the plastic zipper tape body in a clamped mode, and the front ends of the zipper teeth penetrate through the inserting holes and extend out of the groove; the airtight zipper comprises a puller and two zipper belts, and the zipper teeth on the two plastic zipper belts can stretch into the grooves in the opposite sides through the puller and are buckled with the zipper teeth on the opposite sides. The zipper tape and the airtight zipper provided by the utility model are simple to manufacture, as the front ends of the zipper teeth of the two zipper tapes can be mutually inserted into the grooves on the opposite sides during occlusion, the gap between the two zipper tapes is reduced, and when the zipper teeth on the two zipper tapes are mutually occluded and buckled together, the zipper tapes near the grooves can be extruded together to form sealing, so that the airtight zipper is not damaged. And therefore, the airtight isolation effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of zippers, and in particular relates to a zipper tape and an airtight zipper. Background Art

[0002] Conventional metal copper-tooth airtight zippers are made by rolling copper into the required two shapes through a complex process, then stamping them into I-shaped inner teeth and U-shaped outer teeth. The U-shaped outer teeth are then clamped between the inner teeth through rubber cloth to produce a white copper airtight zipper.

[0003] However, due to its overly complicated process, the output is very low and the price is high. Utility Model Content

[0004] In view of this, the purpose of the present invention is to address the deficiencies in the prior art and provide a zipper tape and an airtight zipper that are simple to manufacture while maintaining the high strength and high sealing performance of the zipper.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A zipper belt comprises a plastic chain belt and a plurality of chain teeth. A U-shaped groove is provided at the front edge of the plastic chain belt, and a plurality of insertion holes are evenly opened at the bottom of the groove. The chain teeth are clamped on the back side of the plastic chain belt, and the front ends of the chain teeth pass through the insertion holes and extend out of the groove.

[0007] In order to better realize the present invention, further optimization is made in the above structure. The back of the plastic chain belt is provided with a raised strip corresponding to the groove, and the chain teeth are clamped on the raised strip.

[0008] In order to better realize the present invention, further optimization is made in the above structure. The chain teeth are of a "mountain" shape. The center of the chain teeth passes through the insertion hole and extends into a groove. The two sides of the chain teeth are clamped with the two sides of the raised strip.

[0009] In order to better realize the present invention, further optimization is made in the above structure, and both sides of the chain teeth and both sides of the raised strip are tapered structures.

[0010] In order to better realize the present invention, further optimization is made in the above structure, and the plastic chain belt is made of EVA / PVC / TPU / PE material.

[0011] In order to better realize the present invention, further optimization is made in the above structure, and the chain teeth are made of zinc alloy.

[0012] An airtight zipper comprises a slider and two zipper belts. The sprockets on the two plastic zipper belts can extend into grooves on opposite sides through the slider and be locked together with the sprockets on the opposite sides.

[0013] In order to better realize the present invention, further optimization is made in the above structure, and the slider includes two left and right sliding grooves, and the openings of the two sliding grooves are opened at the bottom of the slider.

[0014] In order to better realize the present invention, further optimization is made in the above structure, and the slider is made of zinc alloy.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The zipper tape and airtight zipper provided by the utility model are simple to manufacture. Since the front ends of the sprocket teeth of the two zipper tapes can be inserted into the grooves on the opposite sides of each other when biting, the gap between the two is narrowed. When the sprocket teeth on the two zipper tapes are biting and buckled together, the zipper tapes near the grooves are squeezed together to form a seal, thereby achieving the effect of isolating and airtight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the connection structure of the airtight zipper of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of the zipper tape of the utility model;

[0020] Figure 3 This is a schematic diagram of the exploded structure of the zipper tape of the utility model;

[0021] Figure 4 It is a structural diagram of the chain teeth in the utility model.

[0022] In the picture:

[0023] 1-Plastic chain belt, 2-Sprocket teeth, 3-Groove, 4-Socket, 5-Raised strip, 6-Slider, 7-Slide groove. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be construed as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0027] Reference Figure 1-4 , which is a structural schematic diagram of the zipper tape and airtight zipper provided by the utility model, wherein the zipper tape includes a plastic chain tape 1 and a plurality of chain teeth 2, a U-shaped groove 3 is provided at the front edge of the plastic chain tape 1, and a plurality of insertion holes 4 are evenly opened at the bottom of the groove 3, the chain teeth 2 are clamped on the back side of the plastic chain tape 1, and the front end of the chain teeth 2 passes through the insertion holes 4 and extends out of the groove 3.

[0028] The back of the plastic chain belt 1 is provided with a raised strip 5 corresponding to the groove 3, and the sprocket 2 is snapped onto the raised strip 5. The sprocket 2 has a "mountain" shape, which can better snap into the plastic chain belt 1. The center of the sprocket 2 passes through the insertion hole 4 and extends out of the groove 3. The two sides of the sprocket 2 snap into the two sides of the raised strip 5. The sides of the sprocket 2 and the sides of the raised strip 5 are both tapered structures, so that when the center of the sprocket 2 passes through the insertion hole 4, it can automatically snap into the two sides of the raised strip 5.

[0029] As described in the background art, conventional metal copper-tooth airtight zipper technology can only install internal and external teeth on rubber cloth, PVC cloth, and TPU cloth. It has not been possible to install the zipper on PE material cloth tape (the main material for military, biochemical and pharmaceutical protection) to make a product. The plastic chain belt 1 in this application can be made of EVA / PVC / TPU / PE materials, which is low-cost and has a wide range of applications. The chain teeth 2 are made of zinc alloy, which has excellent mechanical and physical properties and good economic performance, which can effectively reduce manufacturing costs.

[0030] The airtight zipper provided herein includes a slider 6 and two zipper strips. The slider 6 is made of zinc alloy. The sprocket teeth 2 on the two plastic sprocket strips 1 extend through the slider 6 into opposite grooves 3 and snap together with the opposite sprocket teeth 2. The slider 6 includes two left and right chutes 7. To facilitate squeezing the zipper strips near the grooves 3 together to form a seal, the openings of the two chutes 7 are located at the bottom of the slider 6.

[0031] When in use, the front faces of the two plastic chain belts 1 are facing each other, and the sprockets 2 on the two plastic chain belts 1 enter a slide groove 7 respectively. Since the slide groove 7 of the slider 6 is wide in front and narrow in the back, and the tail ends are connected together to form a channel, when the slider 6 is pulled, the sprockets 2 on the two plastic chain belts 1 are continuously squeezed and extended into the grooves 3 on the opposite side. When they reach the tail end of the slide groove 7, the sprockets 2 on the two plastic chain belts 1 bite each other under the action of squeezing. At the same time, since the groove 3 reduces the distance between the two plastic chain belts 1, when the sprockets 2 bite, the plastic chain belts 1 near the groove 3 are squeezed together to form a sealing structure, thereby achieving the effect of airtightness.

[0032] Manufacturing method and steps: 1) Melt the EVA / PVC / TPU / PE plastic particle material with an extruder, and form a plastic chain belt 1 with a groove 3 through a mold. 2) Die-cast the zinc alloy into a mountain-shaped structure of inner and outer connected chain teeth 2 through a mold. 3) Then polish the zinc alloy teeth and electroplate them with different corrosion-resistant materials for use. 4) Make a socket 4 at the assembly point of each zinc alloy chain tooth 2 in the formed plastic chain belt 1. 5) Assemble the zinc alloy chain tooth 2 into the socket 4 on the plastic chain belt 1, and use the "mountain"-shaped structure to clamp it with the plastic chain belt 1. 6) Pull the two assembled zipper belts together through the slider 6, and the chain cloth at the edge of the chain tooth 2 will be fully squeezed, thereby achieving the waterproof and gas-proof function. 7) Then cut different lengths according to the size requirements of the sealed bag, install a special slider 6, and use an injection molding machine to inject the head and tail seals of the zipper to obtain a high-strength, high-sealing performance, and labor-saving zipper.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A zipper tape, characterized in that: The invention comprises a plastic chain belt (1) and a plurality of chain teeth (2), wherein a U-shaped groove (3) is provided at the front edge of the plastic chain belt (1), a plurality of insertion holes (4) are evenly provided at the bottom of the groove (3), the chain teeth (2) are clamped on the back side of the plastic chain belt (1), and the front ends of the chain teeth (2) pass through the insertion holes (4) and extend out of the groove (3).

2. The zipper tape according to claim 1, wherein: A raised strip (5) corresponding to the groove (3) is provided on the back of the plastic chain belt (1), and the chain teeth (2) are clamped on the raised strip (5).

3. The zipper tape according to claim 2, wherein: The chain tooth (2) is a "mountain"-shaped structure, the center of the chain tooth (2) passes through the insertion hole (4) and extends out of the groove (3), and the two sides of the chain tooth (2) are clamped with the two sides of the raised strip (5).

4. The zipper tape according to claim 3, wherein: Both sides of the chain teeth (2) and both sides of the raised strip (5) are conical structures.

5. The zipper tape according to claim 1, characterized in that: The plastic chain belt (1) is made of EVA / PVC / TPU / PE material.

6. The zipper tape according to claim 1, characterized in that: The chain teeth (2) are made of zinc alloy.

7. An airtight zipper, characterized in that: It comprises a pull head (6) and two zipper belts as described in any one of claims 1 to 6, wherein the chain teeth (2) on the two plastic chain belts (1) can extend into the grooves (3) on the opposite sides through the pull head (6) and be snapped together with the chain teeth (2) on the opposite sides.

8. The airtight zipper according to claim 7, characterized in that: The slider (6) comprises two left and right sliding grooves (7), and the openings of the two sliding grooves (7) are opened at the bottom of the slider (6).

9. The airtight zipper according to claim 8, characterized in that: The slider (6) is made of zinc alloy.

Images