EP4132316A1 - Watertight zipper which has a sealing effect, and method for producing same - Google Patents
Watertight zipper which has a sealing effect, and method for producing sameInfo
- Publication number
- EP4132316A1 EP4132316A1 EP21731887.2A EP21731887A EP4132316A1 EP 4132316 A1 EP4132316 A1 EP 4132316A1 EP 21731887 A EP21731887 A EP 21731887A EP 4132316 A1 EP4132316 A1 EP 4132316A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- teeth
- end piece
- zipper
- waterproof zipper
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims 2
- 238000001746 injection moulding Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
- A44B19/32—Means for making slide fasteners gas or watertight
Definitions
- the present invention relates to a sealing, in particular waterproof, zip fastener with the features of the preamble of claim 1.
- Zip fasteners including those with a slider seal, are known. They have to be threaded for closing or are sewn on one or both sides, with the slider being permanently connected to the zipper halves. To close, the slider must be pulled along the two halves of the zipper, bringing the teeth of the zipper into engagement with one another with two outer flanks. To open the slide, it has to be guided along the zipper and separates the teeth with its central, wedge-shaped heart. Many attempts have been made to produce waterproof zippers by means of injection-molded sealing elements.
- EP-A-0900532 and US-A-2,910,754 show slide fasteners in which the teeth are present as paired engagement elements which are respectively arranged below and above the slide fastener tapes and which are connected to one another by holes in the tapes. Sealing lips or sealing elements extend along the zipper tapes between the engagement elements.
- the zip fastener is provided with at least one end piece which, for example, is injected as a plastic injection-molded part over some closed tooth elements or pairs of teeth. Through this selected shaping process, the end of the zipper is essentially sealing, but on the other hand it also represents the greatest difficulty in the formation of the zipper. Due to the relatively high pressures during injection molding, the pairs of teeth can easily be pushed away in an uncontrolled manner in one direction and the tightness
- the object of the present invention is to create a sealing zipper in which the disadvantages mentioned can be reduced or eliminated and which enables consistently good quality and tightness, especially in the end piece in the manufacture of zippers.
- the zipper consists of rows of teeth which can be brought into engagement with one another and are arranged on zipper strips, the teeth consisting of pairs of engagement elements and an engagement element above and below the plane of the zipper strips for hooking with a corresponding engagement element of the opposite row of teeth is arranged, with sealing lips lying in the plane between the pairs of engagement elements along the front edge of the zipper tapes, with the sealing lips of both rows of teeth lying tightly against each other when the zipper is closed, a zipper slide is present, which runs along the rows of teeth between at least an end stop and an open or closed end and the pairs of teeth are coupled or decoupled together, the end piece as a molded part via d en end rows of teeth is formed integrally and has recesses or recesses of at least one pressure element of the shaping process, during the shaping process at least one, one-piece or multi-piece pressure element at least over at least one above and below the zipper tapes opposite teeth in the area of the end piece, at least running on the top or bottom of the end piece
- the pressure elements hold the teeth during the shaping process, preferably injection molding of the end piece over at least the last tooth of a closed row of teeth, at least this reliably in a defined position.
- the desired position is a position in which the pairs of teeth lying on the end piece and those in the end piece experience a defined pressure against each other during the shaping process, which press the sealing lips between the rows of teeth of each zipper tape against each other.
- a preferred position and / or position of the pressure elements on at least one tooth causes the mutually offset, mutually corresponding teeth to be pressed against one another with a path of 0.02 to 0.3 mm as a pretension on the sealing lips of the zipper.
- the zipper constructed in this way is reliably sealed in the region of its end piece.
- the reliable fixation of the teeth during the injection molding process of the injection molding of the end piece over the closed end of the zipper is achieved in a mold or die or a device designed for this purpose.
- at least one tooth is held on the top and bottom of the zipper tapes with pressure elements so that it can neither twist on a plane during the shaping process nor experience an inclination out of the plane and this also against high pressures on the teeth during of the molding process is guaranteed.
- At least one pressure element is arranged within the end piece, that is to say within its contour, and presses on the small teeth lying within the end piece.
- the opposing tooth located outside the end piece on the same plane is fixed during the shaping process by means of a further pressure piece or another stop or position adjuster provided.
- at least one tooth is held fixed within the end piece with two pressure elements, whereby this tooth is sufficiently fixed both in the plane and against inclination.
- a there- Adjacent teeth outside the end piece can be fixed in the same way by means of an external pressure element or inserted and held against a provided stop or a positioning means.
- the pressure elements are preferably arranged above and below the zipper tapes in a mold or device and fix the teeth in the aforementioned manner.
- the pressure elements are designed in one or more pieces and are preferably designed as mandrels or rods at their points of application and / or ends with which these act on or on the teeth.
- the shape of the end piece is designed as an essentially rectangular element in which at least one tooth is completely covered by this end piece and a tooth coupled with this tooth is only partially or only adjacent to the contour of the end piece on the second zipper tape .
- the end piece itself is designed with a contour following the contour of the tooth shape.
- the side surface of the tooth lying outside the end piece is optimally welded to the outside of the end piece, the contour of which follows that of the tooth.
- the teeth are located completely inside or outside of the end piece or the contour of the end piece, with a first tooth of the zipper preferably being inside and the following one completely outside of the end piece.
- At least a first of the ver set and closed teeth of a zipper tape is practically completely covered by the end piece and the outer contour of the teeth side and the outer surface of the end piece form a welded, tight side surface.
- a corresponding tooth adjoining it is correspondingly partially covered by the end piece.
- the pressure elements or positioning aids designed for example as a pin or dome, have a bevel at least in one area, whereby a tooth experiences a pressure in the direction of the center of the zipper and thus pretensioning on the sealing lips when it comes into contact with its end facing away from the center of the zipper.
- the effect can be intensified when the surfaces of the teeth are designed with a recess and / or groove in the body of the teeth.
- Fig. 1 is a perspective view of a zip fastener with an end piece with the recesses of the pressure elements.
- FIG. 2 shows a plan view of a zip fastener with an end piece with the recesses of the pressure elements.
- FIG. 3 shows a plan view of a zip fastener with an end piece following a contour with the recesses of the pressure elements.
- FIG. 4 shows a detailed view of an end piece according to FIG. 2.
- FIG. 5 shows a detailed view of an end piece according to FIG. 2 in section.
- FIG. 6 shows a sectional view with the pressure elements on the teeth.
- FIG. 7 shows a detailed view of an end piece according to FIG. 3.
- FIG. 8 shows a detailed view of an end piece according to FIG. 3 in section.
- FIG. 9 shows a side sectional view with the pressure elements on the teeth.
- 1 and 2 show a sealing, in particular watertight, zipper with two zipper tapes 1, G, which has an injection-molded end piece 4, which in the embodiment shown first according to FIGS. 1 and 2 as well as FIG. 4 to 6 is essentially rectangular.
- the closed zipper teeth are at least one last tooth 2 ', which, as shown in Fig. 2 and Fig. 5, is substantially fully injected into the end piece 4, executed.
- the adjoining, corresponding tooth 6 of the other zipper tape is formed overmolded by the end piece 4 about halfway.
- the teeth 2 'and 6 are precisely fixed during the shaping process of the end piece over the zipper end and thus at least over these mentioned teeth by means of pressure elements.
- the zip fastener is thus equipped with the recesses 9 and / or recesses in the end piece 4, under which at least the tooth 2 'which is not completely covered by the end piece 4 can be seen.
- the corresponding teeth 6, 2 ' are preferably held in position during the shaping process in such a way that they are pressed against each other, which creates a prestress in the sealing lips of the zipper tapes, whereby the resulting waterproof zipper has an optimized tightness, especially on and in the end piece.
- a corresponding variant is shown in a likewise preferred embodiment according to FIGS. 7 to 9 in which the contour of the end piece 4 is adapted to the outer contour of the first tooth 2 lying outside the end piece 4 and essentially follows the circumference of the tooth.
- the result is the welding on the edge or on the edge surface Forming process of the end piece using the zipper tapes, good sealing properties of the zipper at this point.
- 9 shows an embodiment in which pressure elements 5 press on the respective tooth 2 from both sides of the zipper tape during the shaping process.
- the tooth 2 is equipped at its end facing away from the center of the zipper with a notch or groove 10 into which the pressure element presses with a bevel and presses the tooth toward the center of the zipper with the sealing lips 11 pretensioned against one another.
Landscapes
- Slide Fasteners (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020001847.5A DE102020001847A1 (en) | 2020-03-20 | 2020-03-20 | Sealing, watertight zip fastener and process for its manufacture |
PCT/DE2021/000050 WO2021185397A1 (en) | 2020-03-20 | 2021-03-22 | Watertight zipper which has a sealing effect, and method for producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4132316A1 true EP4132316A1 (en) | 2023-02-15 |
Family
ID=75202916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21731887.2A Withdrawn EP4132316A1 (en) | 2020-03-20 | 2021-03-22 | Watertight zipper which has a sealing effect, and method for producing same |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4132316A1 (en) |
DE (1) | DE102020001847A1 (en) |
WO (1) | WO2021185397A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2910754A (en) | 1953-01-13 | 1959-11-03 | Louis H Morin | Watertight separable fasteners |
CH693602A5 (en) | 1997-06-12 | 2003-11-14 | Riri Sa | watertight zipper. |
GB0703849D0 (en) * | 2007-02-27 | 2007-04-11 | Ykk Europ Ltd | Zip fastener end stop |
CN104053378B (en) | 2012-01-30 | 2016-11-16 | Ykk株式会社 | Water proofing property slide fastener |
CN111867417B (en) * | 2018-03-19 | 2023-05-05 | Ykk株式会社 | Zipper fastener |
-
2020
- 2020-03-20 DE DE102020001847.5A patent/DE102020001847A1/en active Pending
-
2021
- 2021-03-22 WO PCT/DE2021/000050 patent/WO2021185397A1/en unknown
- 2021-03-22 EP EP21731887.2A patent/EP4132316A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102020001847A1 (en) | 2021-09-23 |
WO2021185397A1 (en) | 2021-09-23 |
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Legal Events
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17P | Request for examination filed |
Effective date: 20230104 |
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AK | Designated contracting states |
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DAX | Request for extension of the european patent (deleted) | ||
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18D | Application deemed to be withdrawn |
Effective date: 20230801 |