DE2212068A1 - Surface zipper - Google Patents

Description

. EUGEN MAIER

PATENT ADVOCATE

7 STUTTGART-I 2912068

PI5CHEK57RASSE 19 * Ä I * U U W

TUIPON 242761/1

A 11 355

i - dm

March 11, 1972

AMERICAN VELCRO, Ine.

406 Brown Avenue, Manchester, State of New Hampshire / U.S-, Α,

Surface zipper

The invention relates to a surface relieve with a first and a second surface tear-off socket half, the first surface zipper half of which is a layer ela ~ protruding from one broad side of a base Btiochen Sperrurgselemontsn and the second Plächenreißo a layer auo from one broad side

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March 11, 1972

Has a second pad protruding counter-locking elements, wherein when they move towards each other Locking elements adjacent to the two surface tear-proof lock halves and counter-locking elements are releasable interlocking "Such interconnected Flat zipper halves resist separation by forces directed in the direction of the connecting plane, -during they can easily be separated from one another by peeling forces directed perpendicular to this plane.

There are surface zippers of this type known (U.S. Patent 2 717 437 and 3 009 235) that a fabric have formed base, in which loops protruding over a broad side are woven. The loop threads usually consist of a synthetic fiber such as nylon, which are subjected to a thermal treatment to increase their rigidity after they have been woven into the base are. Certain loops are cut laterally to form hook-shaped locking elements.

It is also known, with hook-shaped locking elements provided Flächerirsißverschlußhälf th for producing egg VAr V.jrbindunft with a crosslinked foam au verwen-

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the. One such closure for attaching a gas cleaning fliter to a frame is described in US Pat. No. 3,127,259. It is also known (French patent publication 1 131 934) _{9 to provide} the base of one closure half with short protruding fibers and to coat the other bit with a foam so that fibers penetrate the foam when these closure halves are pressed against one another.

The invention is based on the object of creating a flat zipper of the type described at the beginning Connection and adhesive properties are improved, especially in the case of connections with crosslinked foams, compared to the corresponding properties of the known closures are, and which is also easy to manufacture.

This object is achieved in that the Locking elements of the first plate zipper half are designed as spear-like projections which attached one at one end to the relevant base and at its free end have a shaft carrying a spear-like point. The spear-like tip has at least two radial ends protruding on opposite sides

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on top which are inclined from the end of the shaft towards the base and which furthermore can be elastically bendable in a parallel plane above the shaft Press the two surface zipper halves together the spear-like protrusions penetrate the layer of the Counter locking element of the second surface tear closure half.

Among other things, being able to bend the anchoring particularly easily elastically relative to the shaft is advantageous according to an advantageous one Further development of the invention, a concave recess is provided at the free end of the shaft of the spear-like projections, in the area of which the recess facing away from the base inclined surfaces of the radial lugs into the shaft end open out, while the surfaces of the radial lugs facing the base and inclined towards it have a round one concave curvature open into the side surfaces of the shaft. With a spear-like tip designed in this way the radial lugs in the area of the concave recess and the concave curvature are slightly relative to the shaft elastically bendable.

According to another development of the invention is for

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Facilitating the penetration of the spear-like protrusions a sharp-edged apex is provided in the layer of the counter-locking elements at the free end of the shaft. The side surfaces forming the sharp-edged apex advantageously extend continuously into those of the base facing away inclined surfaces of the radial Approaches over to form a concave indentation on each side of the apex.

The two flat zipper halves connected to one another can be separated from one another particularly easily if the base of the first flat zipper half is flexible. To be a special good at the same time Attach the two surface zip fastener halves to one another to achieve, it is proposed according to the invention, the speormrtigen protrusions with a greater flexibility as the pad to equip. It is thereby achieved that each spear-like projection old a multiple connection the neighboring counter-locking elements. The first sheet zipper half preferably consists of a flexible molded material.

To further improve the adhesive properties,

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According to the invention, it is proposed that the shaft of the spear-like protrusions tapers from the base to the tip and that the spear-like protrusions also protrude substantially perpendicularly from the base in question.

According to the invention, the layer of the second plate zipper half which forms the counter-locking elements advantageously consists of an open-cell foam material, from which intermediate membranes are formed in the area of the layer surface, forming an at least partial Skeletal structure made up of interconnected closed fibers are removed. The foam can also consist of a a three-dimensional paper skeleton forming reticulated uretane foam. The spear-like projections grip when the two sheet zipper halves move together in the foam layer, hooking with a Variety of fibers one. The counter-locking elements according to the invention can also be shaped like a shoe.

for the surface zip fasteners according to the invention there are a variety of possible applications. Its area of application relates to the fastening of Pilteret fabrics in air conditioning systems and in acoustic and hygienic filter units.

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March 11, 1972

services «. For this purpose, the open-cell The opening to be closed by the filter material can be partially or completely framed with strips of surface zip fastener halves provided with the spear-like projections according to the invention. The filters having a foam surface can easily be attached there or removed for cleaning purposes by simply pressing the plastic part against the spear-like elements is deducted from these.

Further possible applications of the adhesive connections according to the invention are the attachment of foam-backed carpet material to the floor, the use of foam as a sealing material, the attachment of protective mats or foam pads for sports purposes, the retention of foam insulation and the attachment of foam sponges or the like. on washing machines for trolleys, dishes and the like .. The adhesive holder according to the invention can also be used in the production of display products of various types by the spear-like projections for temporarily holding the foam during any on the foam

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treatment or processing to be carried out. It has also been found that the spear-like projections can advantageously replace the hooks in the known surface tear fasteners. When printing one with The spear-like protrusions are attached to a surface zipper half with loops and the spear-like protrusions penetrate deep into the area Loop layer. A large number of them get stuck in the process of the spear-like locking elements with a multitude of loop elements. Ee has shown that the adhesive forces in the case of the surface tear strips according to the invention are larger than in the case of the known surface tear associations.

Some exemplary embodiments of the invention are shown schematically in the drawing. Show it

Fig. 1 is a perspective view of a partially with a surface of open-cell foam pieces connected with spear-like protrusions;

Fig. 2 is a perspective view of a pear-like Voroprunges;

I ·

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Pig. 3 is a front view of the spear-like protrusion after Pig. 2;

Pig. 4 is a side view of the spear-like projection after Pig, 2;

Pig. 5 is a perspective view of another embodiment of a spear-like projection;

Pig. Figure 6 is a front view of the Pig spear-like projection. 5;

Pig. Figure 7 is a side view of the spear-like projection after Pig. 5;

Pig. 8 a greatly enlarged along approximately the section line 8-8 of the Pig. 1 cut detail, from which the connection of the spear-like projections-having surface with an open-cell foam part using both exemplary embodiments of the spear-like shown in the drawing Protrusions can be seen; and

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Fig. 9 ^e inen greatly enlarged detail of a Verbin ". dung between a spear-like projections having surface zip fastener half with a loop-shaped counter-locking element having surface zip fastener half,

The two exemplary embodiments of the spear-like projections according to the invention shown in the drawing are best shown in FIGS. They are preferably made of plastic and are attached to a flexible base, for example, also made of plastic. Among other things, an easy connection and detachment of the hook-forming projections with the Gegenverriegelungseloaenten one to ensure the second half of the zipper the projections are more flexible than the underlying base.

The one in Pig. 2 shown spear-like projection 10 has a shaft 12, preferably tapering in the manner shown, which at its free end has a spear-like Has tip U. The tip H has a symmetrical design and has at least two ears or radial anchoring · 16 on, preferably starting from the free end of the shaft

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March 11, 1972

12 wait in the direction of the pad 32 of the first Surface zipper half are inclined. Approaches 16 extend away from the shaft 12 »εο that the through the Surface 17 formed free end of each approach 16 at a certain distance from the side surfaces 30 of the shaft is located.

The tapering shaft 12 is preferably delimited by five flat surfaces which form a pentagonal polygon in cross section. A rear face 11 extends perpendicular from the pad 32 to the free end of the projection. Two from pad 32 to tip 14 each other tapered side surfaces 30 extend along each side of the shaft 12 and transition smoothly and smoothly a concave curvature 28 in the lower inclined boundary surface 26 facing the base, in each case one of the. radial lugs 16 over. The inclined outer surfaces 26 preferably have an angle downward in the middle inclined upper surfaces 22 facing away from the base.

The front-side part of the shaft 12 is formed by two symmetrical and oppositely angled end faces 13 formed, Theee surfaces 13 go steadily and smoothly into the

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March 11, 1972

radial lugs 16 forming the respective front surfaces 15 over *

In the preferred embodiment, the free ends are of the radial lugs 16 are formed by flat surfaces 17, which are preferably inclined in the direction of the shaft 12. she respectively connect the lower surface 26 to the upper surface 22 of the radial lugs 16. Such a design of this surface facilitates maximum penetration of the projections into the layer of the locking elements of the »Wide zipper half.

over the penetrability of the projections into the layer of To improve counter-locking elements further »is preferably a sharp-edged one at the tip of the shaft 12 Vertex 18 provided. The inclined side surfaces 24 which form the sharp-edged apex extend downward and go downwards, forming one smooth surface in each case concave recess 20 in the upper inclined surfaces 22 of the radial lugs 16 over «. The depressions 20 ensure an optimal elastic flexibility dir radial Sows 16 opposite the shaft 12. In the region of the apex 10, an inclined surface 19 is also provided,

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with a further improvement of the penetration ability of the Vorsimges 10 is achieved.

The projections 10 are tentatively connected to the base 32 integrally connected. They consist of an elastic material, beiapielswelse a pressable plastic. slide Production is preferably carried out by pressing a plastic strip using PreQ plates that have recesses into which protruding parts such as locking elements or other post-like protrusions are pressed in as soon as the pressed material is available Is exposed to pressure. After that, plastic material is applied the exposed ends of the pile-like structures applied while they are still in the depressions, In this way a strip is formed which forms the base and on which the pole-like projections are integrally formed are appropriate.

The special training of the spear-like Voreprtinge old the described smoothly merging outlines and inclined surfaces facilitates the production of an optimal one elastic and multiple locking of the projections 10 with the counter-locking elements of the other F Area closure half. This multiple lock

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is based on the elastic bendability of the radial 16 sentences in a plane parallel to the shank plane. the Locking the apeer-like projections with loop-shaped Gegenvarriegelungselemanten 50 is in Pig. 9 and with a foam structure 52 in Pig »1 and Pig. 8 shown.

Figures 5 to 7 show a modified embodiment of the spear-like protrusions, which bie on the apex 18 the tip of the protrusion essentially coincides with that in the pig. 2 to 4 shown embodiment corresponds. The pear-like depression after the Pig. 5 through 7 instructs the tip of the shaft 34 has a concave recess 36 into which the upper planes 38 of the radial lugs 40 open. As a result, in conjunction with the concave curvature 48, an optimal elastic bendability of the obtained radial lugs 40 of the epeer-like tip 42, The projections 44 also consist of this embodiment preferably made of plastic and are pressed in one piece onto the base 46

In an application not shown in the drawing Fastening device according to the invention is in tape

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uses »which surrounds the opening for the!» odor passage of an air conditioning system. This tape has a base with protruding spear-like projections, the measuring base is preferably oittela, a pressure-sensitive adhesive, attached to the housing of the air conditioning system on its back. A foam sheet is used as a filter in the air conditioning system. 3> asu, a net-like foam BÖ-t adjusted pore size is used, which consists of uretan low density and has a three-dimensional skeletal structure of fibers, the 97 i · or more hollow space and practicable an intermediate

Membranes containing "Schauestoffe, this att" ind beechriebenV IJurcl Jm§rie * een in the ¹ O * So-Patent 3,171,820 the foam surface to which the apearär-tÄgen Toraprünge

= .- -. "■■ '- ■ -r ". ',' ^J : ~ ^ ϊ * ΐ 'φ'" * ■■? ■ '■■■

The surface of the aforementioned band is connected by a large number of the radial extrusions, the protrusions with the interconnected ^ 1βββϊέι. · ίΐ | Ρίί ^: .SdliaiiliBtöffji / Haoh

Lifting the AnpreeadrucKee forms ejlch ^ to

its original j ^ oin - ^: | iuTÖö3 & ussd asirliuigi at the same time its high degree of Durohläseigkeitsgr ^ d. Cross-linked show fabrics of the type described are relatively stable, have good buildability and resistance to abrasion and therefore generally resist separation in a locked state

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by forces parallel to the plane of connection, while aie easily separated from the hinge part by peeling forces directed perpendicular to the locking plane. Bind ο Daa in the Foam filter attached to the housing as described above is therefore held in place in which it as an effective «filter medium in the air conditioning system serves.

Although cross-linked foams are optimal and therefore preferred in terms of the number of fibers available that can bond with the hook, you can other open-inch foams can be used that only a small proportion of intact membranes but an adequate amount of interconnected fibers have in the area of their surface

It is also available for other special applications off-cell foam itself in the form of a strip to be applied in advance or as a layer on another display material or to bring up any other part

17 -

Claims (1)

A 11 355 - 17 - there March 11, 1972 A η 8 pr U c h e rl .J surface zip fastener with a first and a second surface zip fastener half, of which the first surface zip fastener half has a layer of elastic locking elements protruding from a broad side of a base and the second surface zip half a layer of counter-locking elements protruding from a broad side of a second base, with mutual locking elements in the case of ω Closing elements and counter-locking elements that are adjacent to one another are releasably hooked together, characterized in that the locking elements of the first surface tear-open closure half are designed as spear-like protrusions (10, 44), one end of which is attached to the relevant documents (32, 46) and at its free end an opeer-like tip (14, 42) carrying shaft (12, JH), which spear-like - 18 2098 * 7/0 * 43 22120B0 A 11 355 ~ 18 - - dm March 11, 1972 Point has at least two radial lugs (16, 40) protruding towards opposite sides, which are inclined towards the base from the end of the shaft and which are elastically bendable in an Ebano parallel to the shaft plane, and that the spear-like Yoreprünge when the balden surface tear-off halves come together penetrate into the layer (50 _f 52) of the counter-locking element of the second surface zip fastener half, 2. Fläcbenreißvarachluß according to claim 1, characterized characterized in that at the free end of the shaft (34) of the © .peer-like projection® (44) a concave recess (36) is provided, in the region of which the inclined surfaces facing away from the base (46) (38) round the radial lugs (40) into the end of the shaft, that the facing and inclined surfaces (26) of the radial lugs over a round concave Curvature (48) open into the side surfaces (30) of the shaft and that the radial lugs (40) in the region of concave recess (36) and dor kr.nkavou curvature (48) easily bendable relative to the shaft. - 19 209847/0843 212068 A 11 355 - 19th - dia II 3 ^ 1972 ο surface zip fastener according to claim 1, characterized * that a sharp-edged apex (18) is provided in at the free enie AEEA shank (12). 4. Surface zipper according to claim 3 »characterized in that the & en sharp-edged apex (18) forming surfaces (24) in atetigern course in the inclined surfaces (22) of the radial attachment (16) abgsvmndten from the base (3?) To form a pass over the concave indentation (20) on each side of the apex. Surface tear closure according to a dor Aimprücb.3 1 to 4 » marked by the fact that the base (321 46) in the first half of the plate zipper is flexible. Flächenreißvarschluij according to claim 5 »characterized _s DSSS the opeerartigen VoreprUnge (10, 44) have a greater flexibility than the support (32, 46). .. 20 - i 0 ii 3 U 7 i 0 % 4 3 SAD ORJOiNAL A 11 355-20 - dm March 11, 1972 7- surface zip fastener according to one of claims 1 to 6, characterized in that the first half of the sheet zipper made of a molded material consists. 8, plate zip fastener according to one of claims 1 to 7, characterized in that the shaft (12, 34) of the spear-like projections (10, 44) tapers from the base (32, 46) towards the spear-like tip (14, 42). 9ο area zip fastener according to one of claims 1 to 8, characterized in that the spear-like projections (10, 44) are substantially protrude vertically from the relevant documents (32, 46). 10 «flat zip fastener according to one of claims 1 to 9, characterized in that the tapering shaft (12, 34) of the epeer-like protrusions (10, 44) has five flat surfaces (11, 30, 13), which in cross section of the A five-sided polygon is formed on the shaft and a rear surface (11) is calibrated - 21 209847/0643 A 11 355 - 21 - - dm March 11, 1972 essentially perpendicular to the base (32, 46) extends to the free end of the projections, each so-called side surface (30) is tapered and steady and smooth on two opposite sides of the shaft from the base to the spear-like tip (14, 42) forming the round concave curvature (28, 40) in the inclined surface (26) facing the support one of the radial lugs (16, 40) passes over, the inclined surface (26) facing the base also forming an angle with that facing away from the base inclined surface (22) of the respective approach, as well as two symmetrical and oppositely angled end faces (13) eratrekken on the side opposite the rear surface along the shaft and steadily and smoothly in a front surface (15) each pass over one of the radial lugs (16). 11. Flange closure according to claim 10, characterized marked that at the free end " of each radial attachment (16) has a surface (26) facing the support and the surface (22, 33) facing away from the support, the respective attachment (16) connecting, against the 8ohaftende inclined flat boundary surface (17) formed solder. - 22 - 209847 / OeU A 11 355 ~ 22 - dm March 11, 1972 12. Surface zipper according to claim 10 or 11, characterized in that the the Apex (18) having tail of the spear-like tip (14) one from the root to the apex of this part extending, to the rear surface (11) of the shaft inclined flat end face (19). 13. Areal zip closure according to one of claims 1 to 12, characterized in that the layer (52) forming the counter-locking elements the second surface zipper half consists of an open-cell foam, which in the area of the Layer surface Ewiaehen membranes with the formation of a at least partial skeletal structure are removed from interconnected closed fibers, and that the spear-like protrusions (10, 44) when the two surface zip fastener halves are pressed together into the Interlocking foam layer with a multitude of fibers. 14. Surface zipper according to Anspruoh 13, characterized characterized in that the foam consists of a three-dimensional fiber skeleton forming - 23 - 209847 / 0fct3. A 11 355 - 23 - - dm March 11, 1972 reticulated uretane schauia. 15. Fläehenreißverschluß according to any one of claims 1 bia 12, characterized in that the Geganverriegelungseleaente (50) have a loop shape. 209847/0643