WO2003037132A2 - Water-tight zipper - Google Patents

Abstract

The invention relates to a water-tight zipper, whereby the zipper comprises rows of teeth (2, 2') which may be brought to engage with each other, arranged on zipper strips (1, 1'). The teeth comprise pairs of engaging elements and an engaging element is arranged both above and below the plane of the zipper strip, for hooking to a corresponding engaging element on the opposing row of teeth. Sealing lips (27) run between the pairs of engaging elements along the front edge of the zipper strips in the plane thereof. The sealing lips (27) on both rows of teeth (2, 2') lie sealed against each other when the zipper is closed. A zipper slider (3) is provided which may be run along the rows of teeth (2, 2') between an end stop (5) in the open position and a dock (4) in the closed position of the zipper. The slider (3) has a wedge (10) for opening the rows of teeth (2, 2'), flanks for closing the rows of teeth and an upper and a lower plate (7, 8), between which the rows of teeth (2, 2') run. The wedge (10) connects both plates (7, 8) together and the flanks are arranged on the upper and/or lower plate (7, 8). The dock (4) is provided with sealing means for the slider (3) and said dock (4) comprises at least partly of extended sealing lips and seals in the shape of a horseshoe, surrounding a wedge region of the dock (4), moulded above and below the above and on the front region of the zipper strips.

Description

Waterproof zip

description

The present invention relates to a waterproof zipper with the features of the preamble of claim 1.

Zippers, also sealing with sliders are known. They are to be threaded to close or are sewn on one or both sides, whereby the

Slider is constantly connected to the zipper halves. To close, the slide must be pulled along the two halves of the zipper, bringing the teeth of the zipper into engagement with two outer flanks. To open the slide, it must be guided along the zipper and uses its central, wedge-shaped heart to separate the teeth. Injection molded sealing elements have often been used to produce waterproof zippers.

From WO 98/18359 a waterproof zipper is known, consisting of two zipper halves, which are encapsulated with a thermoplastic elastomer, each of which rests as a profile-like coating on the abutting edges of the zipper tapes, the profile-like coatings sealingly abutting one another when the zipper is closed. The zipper has a port for the slider, which is designed as a circumferential bead around a heart area. The port is provided with seals and has a transition to the coating profile of the zipper, which is designed with an oversize, so that the flanks of the zipper exert greater lateral pressure to seal the port. EP-A-0 900 532 and US-A-2,910,754 show zippers in which the teeth are in paired engagement elements, which are respectively arranged below and above the zipper tapes and which are connected to one another by holes in the tapes. Sealing lips or sealing elements extend between the engagement elements along the zipper tapes.

The object of the present invention is to provide a sealing zipper in which, in particular, watertight closure is ensured by particularly simple means.

This object is achieved with the features of the characterizing part of claim 1. Developments and advantageous embodiments of the invention are included in the further claims.

According to the invention is a waterproof zipper, the zipper consisting of mutually engageable rows of teeth arranged on zipper tapes, the teeth consisting of pairs of engagement elements and in each case above and below the level of the zipper tapes an engagement element for hooking with a corresponding engagement element of the opposite row of teeth is arranged, wherein between the pairs of engaging elements along the north edge of the zipper tapes, sealing lips lying in their plane extend, wherein when the zipper is closed, the sealing lips of both rows of teeth lie sealingly against one another, a zipper slide being present along the row of teeth between an end stop in open position and a port in the closed position of the zipper is slidable, the slider being a heart for opening the tough nchenreihen, flanks for closing the rows of teeth and a lower and upper plate, between which the rows of teeth are guided, the heart connecting both plates and the flanks are arranged on the upper and / or lower plate and wherein the port with sealants for the slider is characterized that the port consists at least partially of elongated sealing lips, and consists of horseshoe-shaped seals which are molded onto these and the front area of the zipper tapes and surround a heart area of the port.

The sealing lips form sealing planes for the heart of the valve with the seals in the heart area of the port. The seals are flush with the sealing lips in the sealing plane or have an overhang of up to 0.5 mm above them. The legs of the port each directly adjoin the last tooth of the associated zipper tape, one leg being extended in accordance with the distance of the teeth from the other leg.

According to a preferred embodiment of the invention, the longer leg has an essentially form-fitting recess for the opposite tooth.

According to an advantageous embodiment of the invention, the seals on their upper sides around the heart region of the port have raised sealing lips for abutment against the plates.

Preferably, the plates of the slide widen in the closing direction on bevels and the seals or their sealing lips are thickened at their ends in accordance with these bevels.

According to an advantageous embodiment of the invention, the zipper tapes in the port area are connected at least at its end to a welded-on fabric or a welded-on film, at least part of the connection area of the horseshoe-shaped seals being welded onto this fabric or or this film. The filaments of the fabric are preferably here airtight or airtight and the fabric should contain at least a portion of monofilament.

According to another embodiment of the invention, at least some teeth of the zipper tapes run into the heart area of the port, wherein they are preferably reduced in volume compared to the other teeth, the volume decreasing increasingly towards the port end.

The sealing lips are formed on the zipper tapes or form the front edge. The engagement elements of one tooth are preferably connected to one another by the associated zipper band, the zipper bands having holes for this purpose. The teeth are preferably plastic injection molded parts and the zipper tapes are fabric tapes coated with a plastic material.

The present invention is described in more detail below by way of example with reference to drawings. Show:

Figure 1 is a plan view of a zipper.

Figure 2 is a plan view, partly with a breakout, of a first embodiment of a zipper (shown without a slide).

3 shows a first embodiment of a slide;

Fig. 4 shows a second embodiment of a slide;

5 shows an enlarged illustration of the port area of a second embodiment;

Fig. 6 teeth with engaging elements. Fig. 1 shows a zipper from two zipper tapes 1, 1 ', which are provided with rows of teeth 2, 2', which are in engagement with each other. The teeth here have a rectangular foot part, which is followed by the actual engagement part, consisting of a round recess on both sides and a round head. The zipper has a slider 3 which, in the closed position shown here, is sealed in a port 4. At the end of the zip fastener opposite the port 4 there is an end stop 5 against which the slide 3 rests when the zip fastener is in the fully open position. The zipper tapes are made of a weldable material or are coated with such. Behind the port 4 and partially below and behind the end stop 5 there are strips made of a weldable fabric or a film. End stop 5 and port 4 are on the zipper tapes 1, 1 ',. Respectively. Injection molded strips 6, 6 '.

2 shows a first embodiment of the invention, in which volume-reduced teeth 15 enter port 14, which is molded as a horseshoe-shaped seal on top and bottom of zip fastener tapes 1, 1 'and encloses a heart area 17. Since the port 4 widens from the zipper, it can be seen that the volume-reduced teeth with their outer ends 16 lie outside the row of teeth 2 and thus offer pressure points for the flanks 9 of the slide. In this way, a lateral, sealing pressure is applied to the beginning of the port. On the port there is also an elevated sealing lip 13 which bears sealingly on the respective (upper or lower) plate of the slide. Only the top of the zipper with the port is shown here, but the bottom is constructed identically. The teeth consist of paired engagement elements 25, 25 '(FIG. 6), which are each arranged above and below the zipper tape 1. The engagement elements 25, 25 'are one-piece plastic injection molded parts with a web 26 (FIG. 6) connecting them, which is guided through holes 12 (FIG. 2) of the zipper tape. The front edge of the zipper tapes is dimensioned and constructed so that it seals lip 27 forms (Fig. 6), which rests under tension on the sealing lip of the other zipper tape when the zipper is closed.

Fig. 3 shows an embodiment of a slider 3, consisting of an upper plate 8 and a lower plate 7, which are connected by the slider heart 10, which serves to open the zipper. In this embodiment, the slide heart 10 has a sealing bead 11 for sealing contact in the port. The flanks 9, which serve to close the zipper, are arranged at the bottom on the outer sides of the upper plate 8. Fig. 4 shows another embodiment of a slide, which is specially designed for teeth with paired engaging elements and therefore has upward and downward flanks 9 ', 9 on both the lower plate 1 and the upper plate 8. The heart 10 is designed here without a sealing bead. Towards the front, the slide on the upper and lower plates 8, 7 each has a run-on slope a for easier closing, the port then being thickened in accordance with the run-on slope.

5 finally shows a second embodiment, in which no teeth enter the port area. The port 24 is here also horseshoe-shaped by means of two seals molded onto the (here open) zipper tapes 1, 1 'at the top and bottom. The sealing lips, which extend along the rows of teeth 2, 2 'and are formed by or are formed on the front edges of the zip fastener tapes (see FIG. 6), are extended into the heart region of the port 4, as a result of which the two molded seals are applied from above and molded onto these extensions at the bottom. The legs 20, 21 of the horseshoe-shaped seals can be flush with the extended sealing lips or, as shown here, have a protrusion thereon of 0-0.5 mm. The legs 20, 21 directly adjoin the last tooth 2 ", 2 '" of the associated zipper tape. The longer leg 20 has a recess 23 for the front end of the opposite tooth 2 "so that it can be positively received when it is closed. Likewise, the shorter leg 21 has a bulge 22 for the adjacent tooth 2". On the outer Ren end of the zipper, ie behind the port 24 and still partially below it, a strip 6 of a waterproof fabric or a film is applied to the zipper tapes from below and above. The seals are injection molded with their rear end onto these strips 6 and the extensions of the sealing lips can for example be led up to the beginning of the strips 6. The seals have on their surfaces raised peripheral sealing lips 19 for the plates of the slide. These sealing lips 19 run along the edge of the heart region 17 of the port.

Claims

Expectations 1. Waterproof zipper, the zipper consisting of rows of teeth (2, 2 ') which can be brought into engagement with one another and arranged on zipper tapes (1, 1'), the teeth consisting of pairs of engagement elements and in each case above and below the level of the zipper tapes an engagement element for interlocking with a corresponding engagement element of the opposite row of teeth is arranged, sealing lips (27) lying in the plane between the pairs of engagement elements along the front edge of the zip fastener tapes, the sealing lips of both rows of teeth sealingly abutting one another when the zip fastener is closed, one Zipper slider (3) is present, which is displaceable along the rows of teeth between an end stop (5) in the open position and a port (4) in the closed position of the zipper, the slider (3) being a heart (10) for the Opening the rows of teeth, flanks (9, 9 ') for closing the rows of teeth and a lower and upper plate (7, 8) between which the rows of teeth are guided, the heart connecting the two plates and the flanks on the Upper and / or lower plate are arranged and wherein the port is provided with sealing means for the slide, characterized in that the port (4, 24) consists at least partially of extended sealing lips (27), and from above and below on this and the there are molded horseshoe-shaped seals on the front area of the zip fastener tapes, which surround a heart area (17) of the port. 2. Waterproof zipper according to claim 1, characterized in that the sealing lips (27) with the seals in the heart region (17) of the port Form sealing planes for the heart (10) of the slide. 3. Waterproof zipper according to claim 1 or 2, characterized in that the seals in the sealing plane are flush with the sealing lips or have an overhang of up to 0.5 mm above them. 4. Waterproof zipper according to claim 1, 2 or 3, characterized in that the legs (20, 21) of the port each directly to the last tooth Connect (2 ", 2 '") of the associated zipper tape, one leg (20) being extended according to the distance between the teeth compared to the other leg (21). 5. Waterproof zipper according to claim 4, characterized in that the longer leg (20) has a substantially form-fitting recess (23) for the opposite tooth (2 '') and the shorter leg (21) has a bulge 22 for the form-fitting lying on the adjacent tooth (2 "). 6. Waterproof zipper according to one of the preceding claims, characterized in that the seals on their upper sides around the heart region of the harbor have raised sealing lips (13, 19) for contact with the plates. 7. Waterproof zipper according to one of the preceding claims, characterized in that the plates (7, 8) of the slide have starting bevels (a) widening in the closing direction, and in that the seals or their sealing lips are thickened at their ends in accordance with these starting bevels. 8. Waterproof zipper according to one of the preceding claims, characterized in that the zipper tapes in the port area are connected at least at its end with strips (6, 6 ') made of a welded-on fabric or a welded-on film, at least part of the connection area of the horseshoe-shaped seals is welded onto this fabric or or this film. 9. Waterproof zipper according to claim, characterized in that the filaments of the fabric are air-impermeable or coated airtight. 10. Waterproof zipper according to claim 9, characterized in that the fabric contains monofilaments. 11. Waterproof zipper according to claim 1, 2 or 3, characterized in that at least some teeth (15) enter the heart area (13) of the port (4). 12. Waterproof zipper according to claim 11, characterized in that the teeth entering the harbor are reduced in volume compared to the other teeth. 13. Waterproof zipper according to claim 12, characterized in that the volume decrease towards the end of the port takes place increasingly. 14. Waterproof zipper according to one of the preceding claims, characterized in that the sealing lips (27) are integrally formed on the zipper tapes (1, 1 ') or form the front edge thereof. 15. Waterproof zipper according to one of the preceding claims, characterized in that the engagement elements of one tooth each are connected to one another by the associated zip fastener band. 16. Waterproof zipper according to one of the preceding claims, characterized in that the teeth are plastic injection molded parts. 17. Waterproof zipper according to one of the preceding claims, characterized in that the zipper tapes are fabric tapes coated with a plastic material.