CN209732760U - Waterproof airtight zip fastener that joggle is sealed - Google Patents

Abstract

The utility model relates to a zip fastener product field, concretely relates to sealed waterproof airtight zip fastener of joggle, including two strap, two strap one side in opposite directions is equipped with the chain tooth respectively, and the upper surface coating of two strap has the waterproof layer, is located the chain tooth top of two strap one side in opposite directions and is provided with the seal lip respectively, and the seal lip bonds with the waterproof layer and is integrative, and two seal lips set up in opposite directions, the seal lip includes upper lip and lower lip, and the lower lip all extends the edge of strap with the upper lip, and when the chain tooth that sets up on the strap was closed, the lower lip on two straps was contradicted with the upper lip homogeneous phase, and the cross-section of two upper lips is hook-like structure, and its free end has an extension, and wherein the inner of the extension of one side has a recess, and the extension of opposite side is provided with this recess complex inserted piece, when the chain tooth that sets up on the strap was closed. The utility model discloses mainly be applied to the production of waterproof gas tightness zip fastener product, mainly be applicable to case and bag, clothing etc.

Description

Waterproof airtight zip fastener that joggle is sealed

Technical Field

The utility model relates to a zip fastener product field, concretely relates to waterproof airtight zip fastener that joggle is sealed.

Background

Airtight zip fastener evolves by ordinary zip fastener and comes, and ordinary zip fastener includes strap, chain tooth, pull head, upper end and lower extreme end, and two strap one sides in opposite directions are equipped with the chain tooth respectively, and on two rows of chain teeth were located in the pull head slidable, the vertical both ends that chain tooth was located respectively to upper end and lower extreme end were used for spacing the pull head, and the strap surface of airtight zip fastener is equipped with the waterproof TPU membrane of one deck, is equipped with airtight structure in chain tooth and pull head part. Chinese patent CN102342631B, having application date 2011, 07, 27, discloses a waterproof zipper, a pair of tapes having coupling elements attached thereto, wherein: a coating of polymeric material is provided to at least one surface of the tapes and extends continuously along the surface; the coating comprises a flap having a bulbous region in a cross section taken along the width direction of the tapes when the zipper is in an open configuration; the coating cannot extend beyond the coupling elements when the zipper is in an open configuration; when the zipper is in a closed configuration, the flaps of the cladding on both sides of the tapes abut at the centerline of the zipper to form a seal including the sealing lips of the flaps. That is, a specific sealing structure is disclosed which forms a sealing structure above the coupling elements when the zipper is closed to achieve the airtight requirement. The two coatings of the zipper of the sealing structure are mutually extruded when in contact, so that the condition that the air tightness requirement cannot be met after the coatings are deformed to a certain degree is easily caused, and the stability of the whole structure is not strong.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above problems, the present invention provides a waterproof airtight slide fastener with a joggle seal having a multiple seal structure.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

The utility model provides a joggle sealed waterproof airtight zip fastener, includes two strap, and two strap one side in opposite directions are equipped with the chain tooth respectively, and the upper surface coating of two straps has the waterproof layer, is located the chain tooth top of two strap one side in opposite directions and is provided with the seal lip respectively, and the seal lip bonds with the waterproof layer and is integrative, and two seal lips set up in opposite directions, the seal lip includes upper lip and lower lip, and the lower lip all extends the edge of strap with the upper lip, and when the chain tooth that sets up on the strap was closed, the lower lip on two straps was contradicted with the upper lip homogeneous phase, and the cross-section of two upper lips is hook-like structure, and its free end has the extension, and wherein the inner of the extension of one side has a recess, and the extension of opposite side is provided with this recess complex inserted piece, when the chain tooth that sets up on the strap was closed.

Preferably, the end parts of the two extending parts are provided with capillary edges, and the thickness of the capillary edges is smaller than that of the extending parts.

Preferably, the lower end face of the extension part with the groove side is in shape fit with the upper end face of the extension part with the insert side.

By adopting the technical scheme, the beneficial effects of the utility model are that: the utility model discloses a setting has two seal lip structures that stretch out the end of upper lip, lower lip, when the seal lip laminating of both sides, can form upper and lower double-deck seal space, adopts the mode of joggle, forms the sealed form of multi-surface laminating at the both sides extension, compares with traditional seal structure and has more good sealed effect, and seal structure's stability is stronger.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

Fig. 2 is the embodiment of the present invention provides a schematic structural diagram of a forming pinch roller and a mold in a forming mechanism.

Detailed Description

The following detailed description will be given with reference to specific embodiments, so as to solve the technical problems by applying technical means, and to fully understand and implement the technical effects of the present invention.

examples

Referring to fig. 1, a waterproof airtight zipper with joggle joint sealing comprises two cloth belts 1, wherein one opposite sides of the two cloth belts 1 are respectively provided with a zipper tooth, the upper surfaces of the two cloth belts 1 are coated with a waterproof layer 2, sealing lips 3 are respectively arranged above the zipper teeth on one opposite sides of the two cloth belts 1, the sealing lips 3 are bonded with the waterproof layer 2 into a whole, the two sealing lips 3 are oppositely arranged, the sealing lips 3 comprise an upper lip 31 and a lower lip 32, the lower lip 32 and the upper lip 31 both extend out of the edge of the cloth belts 1, when the zipper teeth arranged on the cloth belts 1 are closed, the lower lip 32 on the two cloth belts 1 is abutted against the upper lip 31, the cross section of the two upper lips 31 is of a hook-shaped structure, the free end of the upper lip is provided with an extension part 311, the inner end of the extension part 311 on one side is provided with a groove 312, the extension part 311 on the other side is provided with an insert 313 matched with the, the insert 313 is embedded in the groove 312.

In this embodiment, the capillary edges 314 are disposed at the ends of the two extending portions 311, and the thickness of the capillary edges 314 is smaller than that of the extending portions 311. The thickness of the capillary edge 314 needs to be thin, so that the capillary edge 314 has a sheet structure with certain flexibility, and the capillary edge 314 can be firstly attached to the upper end and the lower end of the upper lip 31 under the action of air pressure or water pressure to further seal and protect a matching gap between the two extending parts 311.

specifically, the lower end surface of the extension 311 with the groove 312 is fitted to the upper end surface of the extension 311 with the insert 313. This enables the two side extensions 311 to be completely attached up and down, and in cooperation with the capillary edges 314 on both sides, a further seal can be formed at the connecting ports at the upper and lower ends of the two extensions 311.

Refer to fig. 2 simultaneously, seal lip 3 when the shaping, through a forming mechanism, finalize the seal lip 3 under the hot melt state, forming mechanism includes the frame, erects the shaping pinch roller 4 in the frame, locate on the frame of shaping pinch roller 4 below with shaping pinch roller 4 cooperation mould 5, a plurality of be used for transmitting two strap and pass the deflector roll between shaping pinch roller 4 and the mould 5 and install the conveyer belt on each deflector roll, as shown in fig. 2, form a shaping chamber 41 between shaping pinch roller 4 middle part and the mould 5, waterproof strip is passing through the structure that becomes chamber 41 after the shaping chamber 41 and change according to this shaping chamber 41 promptly, only show the foundation structure of mould 5 and shaping pinch roller 4 in fig. 2, concrete shaping chamber 41 can change according to the demand.

The utility model discloses to the infrastructure of zip fastener such as pull head, upper end, lower end stop isotructure do not do the concrete description, above-mentioned structure is known to technical personnel in the field.

The utility model discloses a setting has two seal lip structures that stretch out the end of upper lip, lower lip, when the seal lip laminating of both sides, can form upper and lower double-deck seal space, adopts the mode of joggle, forms the sealed form of multi-surface laminating at the both sides extension, compares with traditional seal structure and has more good sealed effect, and seal structure's stability is stronger.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. The utility model provides a waterproof airtight zip fastener that joggle is sealed, includes two strap, and two strap one side in opposite directions are equipped with chain tooth, its characterized in that respectively: the upper surface coating of two strap has the waterproof layer, is located the chain tooth top of two strap one side in opposite directions and is provided with the seal lip respectively, and the seal lip is integrative with the waterproof layer bonding, and two seal lips set up in opposite directions, the seal lip includes upper lip and lower lip, and the lower lip all extends the edge of strap with the upper lip, and when the chain tooth that sets up on the strap was closed, the lower lip on two straps was contradicted with the upper lip homogeneous phase, and the cross-section of two upper lips is hook-like structure, and its free end has the extension, and wherein the inner of the extension of one side has a recess, and the extension of opposite side is provided with the inserted sheet with this recess complex, when the chain tooth that sets up on the strap was closed, the inserted sheet embedding in the recess.

2. The dovetail-sealed, water-tight, air-tight zipper of claim 1, wherein: and capillary edges are arranged at the end parts of the two extending parts, and the thickness of the capillary edges is smaller than that of the extending parts.

3. The dovetail-sealed, water-tight, air-tight zipper according to claim 1 or 2, wherein: the lower end surface of the extension part with one side of the groove is jointed with the upper end surface of the extension part with one side of the embedded sheet.