CN218044054U - Double-layer tooth dynamic airtight zipper - Google Patents
Double-layer tooth dynamic airtight zipper Download PDFInfo
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- CN218044054U CN218044054U CN202220910328.7U CN202220910328U CN218044054U CN 218044054 U CN218044054 U CN 218044054U CN 202220910328 U CN202220910328 U CN 202220910328U CN 218044054 U CN218044054 U CN 218044054U
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- elastomer layer
- plastic elastomer
- sealing strip
- elastic sealing
- zipper cloth
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Abstract
The utility model discloses a double-deck tooth dynamic airtight zip fastener, including zip fastener cloth and chain tooth, zip fastener cloth including first zip fastener cloth and second zip fastener cloth, the both sides of zip fastener cloth all have the chain tooth, first zip fastener cloth is provided with the sealing area with the second zip fastener cloth one side relative, first zip fastener cloth surface is provided with first plastic elastomer layer, and the second zip fastener cloth surface is provided with second plastic elastomer layer, first plastic elastomer layer and second plastic elastomer layer all extend to the sealing area, first plastic elastomer layer is provided with first elastic sealing strip towards one side on second plastic elastomer layer, the hardness of first elastic sealing strip equals or is less than the hardness on first plastic elastomer layer, the utility model discloses the leakproofness is strong, especially when receiving side direction pulling force or crooked, all can realize good sealed effect through the better first elastic sealing strip of elasticity.
Description
Technical Field
The utility model belongs to the technical field of airtight zip fastener, more specifically the utility model relates to a dynamic airtight zip fastener of double-deck tooth that says so.
Background
Slide fasteners are connecting members for joining or separating articles by means of continuously arranged fastener elements, and are used in a large number of applications such as clothing, bags, tents, and the like. A fastener consisting of two belts each provided with a row of metal teeth or plastic teeth is used for connecting the edge of an opening (such as clothes or a bag opening), and a sliding piece can pull the two rows of teeth into an interlocking position to seal the opening; a chain attached to something (as a suspended or dropped object) to tension, stabilize or guide the item. With the development of human social economy and science and technology, the zipper is developed from an initial metal material to a non-metal material, from a single variety and single function to a multi-variety and multi-specification comprehensive function, and goes through a long evolution process from a simple structure to the modern exquisite and beautiful appearance and colorful appearance. The performance, structure and material of the small zipper are changed day by day, the small zipper has wide application, and the small zipper extends into various fields of aerospace, aviation, military, medical treatment, civil use and the like, plays an increasingly large role in the life of people, and shows the importance and vitality of the small zipper more and more. A slide fastener has been loaded into a history book as one of ten most practical models most practical for humans in this century.
The existing clothes zipper is only simply to connect clothes divided into two sides together, when it rains or is splashed with water, the water can enter the clothes along the gaps between the zipper teeth to make the inside of the clothes wet, so a sealed zipper is needed, the common sealed zipper is mainly used for transparent pen bags and mobile phone sealing bags, the zipper is made of rubber materials or plastics, one side of the zipper is provided with a convex strip, the other side of the zipper is provided with a groove, the zipper head is used for closing the two sides to achieve the sealing effect, although the zipper can achieve the sealing effect, the connecting strength of the zipper is not enough, the zipper can be separated under stress, the other sealed zipper adopts a zipper tooth type, if the Chinese patent with the application number of 1203008674, a plastic steel airtight zipper is disclosed, which comprises: the chain tooth part and the lock head are fixed in the middle of the rubber cloth; the rubber cloth comprises more than two layers of base cloth, each layer of base cloth is laminated and fixed together by a plastic elastomer layer, and the upper surface and the lower surface of each layer of base cloth are coated with the plastic elastomer layers; the zipper tooth part consists of two zipper teeth, namely a first zipper tooth and a second zipper tooth, and each zipper tooth comprises a plurality of upper zipper heads and a plurality of lower zipper heads which are arranged at equal intervals; the upper zipper head and the lower zipper head are both provided with a main body part, the inner side and the outer side of the main body part are respectively provided with a closed tooth head and a positioning table, and two grooves are formed between the closed tooth head and the positioning table. It has excellent sealing performance, good waterproof and air leakage preventing effects and long service life.
As shown in fig. 1, it can be seen as a cross-sectional view of the zipper in the above patent when the zipper is closed, the rubber cloths on both sides are squeezed together to achieve a sealing effect when the zipper is closed, and in order to ensure the strength of the zipper, the hardness of the plastic elastomer layer on the rubber cloths is high, but when the zipper is pulled outwards, a gap is easily generated between the rubber cloths, so that the airtightness is insufficient.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a leakproofness is strong, especially when receiving side direction pulling force or crooked, and the homoenergetic can realize good sealed effect through the better first elastic sealing strip of elasticity.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a double-deck tooth dynamic airtight zip fastener, draws zipper cloth including drawing zipper cloth and chain tooth, draws zipper cloth to include first zip fastener cloth and second and draws zipper cloth, the both sides of drawing zipper cloth all have the chain tooth, first zip fastener cloth draws zipper cloth one side relative with the second and is provided with the sealed area, first zip fastener cloth surface is provided with first plastic elastomer layer, and the second draws zipper cloth surface to be provided with second plastic elastomer layer, first plastic elastomer layer and second plastic elastomer layer all extend to the sealed area, first plastic elastomer layer is provided with first elastic sealing strip towards one side of second plastic elastomer layer, the hardness of first elastic sealing strip equals or is less than the hardness of first plastic elastomer layer.
Furthermore, one surface of the first elastic sealing strip facing the second plastic elastomer layer is a plane.
And further, one surface of the first elastic sealing strip facing the second plastic elastomer layer is a convex cambered surface.
Furthermore, a second elastic sealing strip is arranged on one side, facing the second plastic elastomer layer, of the second plastic elastomer layer, and the hardness of the second elastic sealing strip is equal to or lower than that of the second plastic elastomer layer.
The shape of the second elastic sealing strip is matched with the shape of the first elastic sealing strip in a complementary way.
And the first elastic sealing strip and the second elastic sealing strip are made of TPU, PVC or EVA.
The zipper is characterized in that the first zipper cloth comprises a lower zipper cloth layer and an upper zipper cloth layer, the width of the upper zipper cloth layer is smaller than that of the lower zipper cloth layer, the first plastic elastomer layer is located on the upper surface of the lower zipper cloth layer, the upper zipper cloth layer is located on the upper surface of the first plastic elastomer layer, and the zipper teeth are fixed on the upper zipper cloth layer and the lower zipper cloth layer.
Compared with the prior art, the beneficial effects of the utility model are that: through setting up first elastic sealing strip and second elastic sealing strip in sealing area department, its elasticity is better, can receive pulling force or when crooked automatic compensation at the zip fastener, guarantees that contact department realizes sealedly, and the chain tooth of zip fastener cloth both sides can avoid certain one side of middle sealing area to be pulled open alone and produce the gap simultaneously.
Drawings
FIG. 1 is a schematic view of a prior art containment zipper;
fig. 2 is a schematic view of a first embodiment of the present invention;
FIG. 3 is a schematic view of the zipper of the second embodiment of the present invention when it is fastened;
FIG. 4 is a schematic view of the second zipper of the embodiment of the present invention when the second zipper is opened;
fig. 5 is a schematic view of a third embodiment of the present invention;
FIG. 6 is a schematic view of the fourth embodiment of the present invention
Fig. 7 is a schematic view of a fifth embodiment of the present invention;
fig. 8 is a schematic diagram of a sixth embodiment of the present invention.
Reference numerals: 11. a first zipper cloth; 111. a lower layer of zipper cloth; 112. an upper layer of zipper cloth; 12. a first plastic elastomer layer; 13. a sealing zone; 21. a second zipper cloth; 22. a second plastic elastomer layer; 31. a first elastic sealing strip; 32. a second elastic sealing strip; 4. the zipper teeth.
Detailed Description
The embodiment of the double-layer dynamic airtight zipper of the present invention will be further described with reference to fig. 2 to 8.
In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.
The first embodiment is as follows:
the utility model provides a double-deck tooth dynamic airtight zip fastener, draws zipper cloth including drawing zipper cloth and chain tooth 4, draws zipper cloth to draw zipper cloth 11 and second to draw zipper cloth 21, the both sides of drawing zipper cloth all have chain tooth 4, first draw zipper cloth 11 to draw zipper cloth 21 one side relative with the second to be provided with sealing area 13, first draw zipper cloth 11 surface to be provided with first plastic elastomer layer 12, second draw zipper cloth 21 surface to be provided with second plastic elastomer layer 22, first plastic elastomer layer 12 and second plastic elastomer layer 22 all extend to sealing area 13, first plastic elastomer layer 12 is provided with first elastic sealing strip 31 towards one side of second plastic elastomer layer 22, the hardness of first elastic sealing strip 31 equals or is less than the hardness of first plastic elastomer layer 12.
As shown in fig. 2, in this embodiment, the first zipper fabric 11 is on the left side, the second zipper fabric 21 is on the right side, wherein the first elastic sealing strip 31 is only disposed on the first zipper fabric 11 on the left side, and is specifically connected to the right side of the first plastic elastomer layer 12, when the zipper is combined, the first elastic sealing strip 31 contacts and extrudes the second plastic elastomer layer 22 on the right side, the first elastic sealing strip 31 is extruded to generate a large deformation, and the deformation of the second plastic elastomer layer 22 and the first plastic elastomer layer 12 is smaller than that of the first elastic sealing strip 31, when the zipper is subjected to an outward pulling force or overall bending on the left and right sides, the first elastic sealing strip 31 has a large resilience, so as to ensure contact sealing on the left and right sides, and meanwhile, the first plastic elastomer layer 12 and the second plastic elastomer layer 22 have a high hardness, so as to avoid over-softening and overall deformation.
In this embodiment, a surface of the first elastic sealing strip 31 facing the second plastic elastomer layer 22 is a plane.
The preferred material of the first elastic sealing strip 31 is TPU, PVC or EVA, but it can also be similar plastic elastomer.
Preferably, TPU is also used for the first plastic elastomer layer 12 and the second plastic elastomer layer 22.
As shown in fig. 2, in the present embodiment, the first zipper cloth 11 preferably includes a lower zipper cloth 111 and an upper zipper cloth 112, a width of the upper zipper cloth 112 is smaller than a width of the lower zipper cloth 111, the first plastic elastomer layer 12 is located on an upper surface of the lower zipper cloth 111, the upper zipper cloth 112 is located on an upper surface of the first plastic elastomer layer 12, and the zipper teeth 4 are fixed on the upper zipper cloth 112 and the lower zipper cloth 111; the second fastener cloth 21 in this embodiment has the same structure as the first fastener cloth 11.
Example two:
as shown in fig. 3 and 4, a second elastic sealing strip 32 is disposed on a side of the second plastic elastomer layer 22 facing the second plastic elastomer layer 22, a hardness of the second elastic sealing strip 32 is equal to or lower than a hardness of the second plastic elastomer layer 22, a structure and a material of the second elastic sealing strip 32 are the same as those of the first elastic sealing strip 31, and other technical features are the same as those of the first embodiment.
Example three:
as shown in fig. 5, in the present embodiment, a surface of the first elastic sealing strip 31 facing the second plastic elastomer layer 22 is a convex arc surface, and other technical features are the same as those of the first embodiment.
In this embodiment, the first elastic sealing strip 31 can extend upwards and downwards when being pressed by the second plastic elastomer layer 22, so that the first elastic sealing strip 31 has better elasticity.
Example four:
as shown in fig. 6, in the present embodiment, the opposite surfaces of the first elastic sealing strip 31 and the second elastic sealing strip 32 are both convex curved surfaces, and other technical features are the same as those of the embodiment.
Example five:
as shown in fig. 7, in this embodiment, a surface of the first elastic sealing strip 31 facing the second elastic sealing strip 32 is a convex arc surface, and a surface of the second elastic sealing strip 32 facing the first elastic sealing strip 31 is a concave arc surface, which are matched with each other, and other technical features are the same as those of the first embodiment.
Example six:
as shown in fig. 8, in the present embodiment, the other side of the first zipper cloth 11 opposite to the first plastic elastomer layer 12 and the other side of the second zipper cloth 21 opposite to the second plastic elastomer layer 22 are provided with a film or glue.
A production method of a double-layer tooth dynamic airtight zipper comprises the following steps of compounding a plastic elastomer layer on zipper cloth, fixing zipper teeth 4, adhering a molten elastic sealing strip to a sealing area 13 of the plastic elastomer layer by using an extruder, selecting a pressing wheel with a corresponding shape according to the shape of the outer side of the elastic sealing strip, rolling along the length direction of the elastic sealing strip by using the pressing wheel, enabling the elastic sealing strip to be tightly adhered to the plastic elastomer layer, and simultaneously enabling the surface of the elastic sealing strip to be formed.
If the surface of the first elastic sealing strip 31 is flat in the first embodiment, the surface of the pressing wheel adopts a flat structure, and the melted TPU is pressed on the first plastic elastomer layer 12, so that the TPU adheres to the plastic elastomer layer and forms the first elastic sealing strip 31.
If the surface of the first elastic sealing strip 31 is a convex arc surface in the third embodiment, the surface of the pressing wheel is a concave arc surface, and the melted TPU is pressed on the first plastic elastomer layer 12, so that the TPU adheres to the plastic elastomer layer and forms the first elastic sealing strip 31.
The second elastic weather strip 32 is formed in the same step as the first elastic weather strip 31.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a double-deck tooth dynamic state airtight zip fastener, draws zipper cloth to include that first drawing zipper cloth and second draw zipper cloth, its characterized in that including drawing zipper cloth and chain tooth: zipper cloth's both sides all have the chain tooth, first zipper cloth draws the relative one side of zipper cloth with the second and is provided with the seal area, first zipper cloth surface is provided with first plastic elastomer layer, and the second draws zipper cloth surface to be provided with second plastic elastomer layer, first plastic elastomer layer and second plastic elastomer layer all extend to the seal area, one side that first plastic elastomer layer orientation second plastic elastomer layer is provided with first elastic sealing strip, the hardness of first elastic sealing strip equals or is less than the hardness on first plastic elastomer layer.
2. The double-toothed dynamic airtight slide fastener according to claim 1, wherein: one surface of the first elastic sealing strip, which faces the second plastic elastomer layer, is a plane.
3. The double-layered tooth dynamic airtight slide fastener according to claim 1, wherein: one surface of the first elastic sealing strip, which faces the second plastic elastomer layer, is a convex cambered surface.
4. The double-layered tooth dynamic airtight slide fastener according to any one of claims 1 to 3, wherein: one side of the second plastic elastomer layer, which faces the second plastic elastomer layer, is provided with a second elastic sealing strip, and the hardness of the second elastic sealing strip is equal to or lower than that of the second plastic elastomer layer.
5. The double-layered tooth dynamic airtight slide fastener according to claim 4, wherein: the shape of the second elastic sealing strip is matched with the shape of the first elastic sealing strip in a complementary mode.
6. The double-layered tooth dynamic airtight slide fastener according to claim 5, wherein: the first elastic sealing strip and the second elastic sealing strip are made of TPU, PVC or EVA.
7. The double-layered tooth dynamic airtight slide fastener according to claim 6, wherein: first zip fastener cloth includes that lower floor draws zipper cloth and upper zipper cloth, the width that the upper zipper cloth was drawn zipper cloth to the upper strata is less than the width that lower floor draws zipper cloth, first plastic elastomer layer is located the upper surface that lower floor draws zipper cloth, upper zipper cloth is located first plastic elastomer layer upper surface, the chain tooth is fixed in on upper zipper cloth and the lower floor draws zipper cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220910328.7U CN218044054U (en) | 2022-04-19 | 2022-04-19 | Double-layer tooth dynamic airtight zipper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220910328.7U CN218044054U (en) | 2022-04-19 | 2022-04-19 | Double-layer tooth dynamic airtight zipper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218044054U true CN218044054U (en) | 2022-12-16 |
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ID=84428674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220910328.7U Active CN218044054U (en) | 2022-04-19 | 2022-04-19 | Double-layer tooth dynamic airtight zipper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218044054U (en) |
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2022
- 2022-04-19 CN CN202220910328.7U patent/CN218044054U/en active Active
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