DE10318432B4 - Molded backing having at least one self-adherent tape and method of making such a backing - Google Patents

Abstract

By Plastic molds received carrier with at least one self-adhesive tape (7) along a Length (L) and a width (1) and on the one hand a so-called front surface (7a), which is provided with self-adhesive elements (12), the to be complementary Holding means (8) of a cover (6) catching the support (5) at least partially covered, and secondly a so-called posterior Area (7b) includes, the front surface (7a) is opposite, where the back surface (7b) is sunk during molding in the foam plastic and so the band (7) with the carrier (5), wherein the rear surface (7b) of the band (7) at least an anchoring element (14) which is substantially the shape an anchoring loop (15; 23) extending between two extends with the self-adhesive tape (7) connected ends and Completely sunk in the foam plastic, wherein the anchoring loop (15; 23) is made of flexible material that forms when molding of the carrier on foam plastic ...

Description

The invention relates to carriers obtained by molding with at least one self-adhesive tape according to the preamble of patent claim 1 and to the process for producing such carriers. Such a carrier is from the US 4,933,224 A known.

The US 4,933,224 A describes a carrier obtained by plastic molding with at least one self-adhesive tape along a length L and across a width 1 and on the one hand a so-called front surface, which is provided with self-adhesive elements which engage with complementary retaining means of a cover, which covers the carrier at least partially, and on the other hand comprises a so-called rear surface which is opposite to the front surface, wherein the back surface, when molded, is buried in the foamed plastic and thus bonds the band to the carrier, the rear surface of the band having at least one anchoring element substantially in the form of an anchoring loop extending between two ends joined to the adhesive band; is completely recessed in the foam plastic, wherein the anchoring loop is made of a flexible material that can adhere to the foam plastic in molding the carrier.

FR 2 761 863 A1 describes a carrier of this type with a self-adhesive tape, the rear surface of which is formed by a carrier layer of flexible material which is partially buried in the plastic foam during molding. This carrier layer, which forms the rear surface of the self-adhesive tape, extends substantially parallel to the outer surface of the carrier and is sunk in the carrier, that the self-adhesive band merges into the support surface of the carrier, thus forming a planar support for the complementary retaining elements of the cover that at least partially covers the wearer.

There the carrier layer, which the back surface the self-adhesive tape forms, only a small thickness in the Magnitude from 1 to 3 mm in the vehicle sunk, the risk is great that the self-adhesive Band from his carrier triggers, if too strong forces exercised on the reference become the carrier covered.

FR 2 466 330 A1 describes a band having a substantially U-shaped cross-section with a rear and a front surface with two sections which face each other and thereby form a groove. The front surface which forms the groove is made of nonwoven which hangs on a protruding band with self-adhesive elements, the projecting band being attached to the cover perpendicularly thereto.

If too strong forces on the cover and thus on the front surface of the band in the form of a groove exercised The risk is also high that the back surface of the Bands from their carrier solves.

Of the Invention has for its object to overcome these disadvantages.

These Task is with the features of claim 1 and claim 5 solved. In the dependent claims are features of preferred embodiments characterized the invention.

By their arrangements may be the anchoring loop that extends over the entire width of the tape extends and completely submerged in the foam plastic is to prevent the tape from being detached from its wearer when the cover that the wearer at least partially covered, forces and exposed to, for example, deflection stresses.

Besides that is the anchoring loop of the self-adhesive tape is particularly flexible, what makes it possible the tape in the manufacture of the carrier by molding foam plastic easy to insert into curved throats of the mold.

Further Features and advantages of the invention will become apparent in the course of the following Description of several of its embodiments clearly, as non-limiting Examples will be given and reference to the accompanying drawings.

It demonstrate:

1 a schematic view of a car seat, to which the invention can be applied;

2 a cross section of a seat of in 1 shown seat according to an embodiment of the invention;

3 a sectional view taken along the line III-III of 2 ;

4 to 7 Embodiments of the anchoring element of the self-adhesive tape, which is recessed in the foam plastic of the seat, which forms the carrier;

8th a schematic cross-sectional view of a mold in which the carrier is made, which in this example of a padding of in 2 represented seat is formed;

9 a detail view of one of the hollow Throats in the walls of the form of 8th shows, with a self-adhesive tape, which is inserted in the throat;

10 a partial perspective view of one of the throats of the mold, which in 9 is shown before inserting the self-adhesive tape;

11 a similar view as 9 a second embodiment of one of the hollow grooves in the walls of the mold; and

12 a cross-sectional view of a seat, which is obtained by means of a mold which at least one throat according to the second embodiment according to 11 having.

Same or similar Elements bear the same reference numerals in the various figures.

1 schematically shows a motor vehicle seat 1 with a seat 2 standing on a vehicle floor 3 the vehicle is mounted and a backrest 4 wearing.

As in 2 shown, includes the seat 2 , which forms the carrier according to the invention, a padding 5 , which is generally made of foamed plastic, in particular of polyurethane foam.

This upholstery 5 is supported by a rigid metal fitting (not shown) and is covered by a cover 6 covered in fabric, leather or other material.

• – zum einen selbsthaftende Bänder 7, die teilweise im Polyurethanschaum, der die Polsterung 5 bildet, versenkt sind und selbsthaftenden Elemente aufweisen, die an der dem Bezug 6 zugewandten Oberfläche der Polsterung 5 vorstehen, wobei die Bänder 7 beispielsweise an der oberen Auflagefläche der Polsterung angeordnet sein können, um für einen flächigen Halt zu sorgen, und/oder innerhalb von vertikalen Längsschlitzen 11, die in der oberen Fläche 10 geformt sind, um den Bezug 6 in die Schlitze 11 zurückzuholen;
• – und zum anderen Halteelemente 8, die an der Innenfläche 9 des Bezugs 6 in Entsprechung zu den selbsthaftenden Bändern 7 befestigt sind und sich an diesen festhalten können.

The edges of the cover 6 are usually attached to the rigid fitting, which is the upholstery 5 In addition, the cover is in several places by holding devices with the padding 5 firmly connected. These holding devices have:

• - On the one hand self-adhesive tapes 7 partially in polyurethane foam, which is the upholstery 5 forms, are sunk and have self-adhesive elements attached to the cover 6 facing surface of the upholstery 5 protrude, with the tapes 7 for example, can be arranged on the upper support surface of the padding to provide a flat grip, and / or within vertical longitudinal slots 11 in the upper area 10 are shaped to the cover 6 in the slots 11 retrieve;
• - And on the other holding elements 8th on the inside surface 9 of the reference 6 in correspondence with the self-adhesive tapes 7 are attached and can hold on to these.

Im in 2 example shown, the holding elements 8th the cover consist of self-adhesive strips.

The self-adhesive tapes 7 and the self-adhesive strips 8th can be arranged in the longitudinal direction of the seat over a large part of the length of the seat, but of course other arrangements of the bands are 7 and the strip 8th possible.

• – eine vordere Fläche 7a, die von einer selbsthaftenden Schicht gebildet wird; diese kann beispielsweise eine durch Extrusion erhaltene Schicht oder eine gewebte oder gestrickte Textilschicht sein, welche die selbsthaftenden Elemente 12 enthält, wobei die selbsthaftenden Elemente jeweils die Form eines Hakens aufweisen können, beispielsweise eines flexiblen Stiels, der mit einer offenen Öse, mit einem aufgeweiteten Kopf, mit einer Spitze in Form eines Hakens oder Ähnlichem endet, wobei sich die selbsthaftenden Elemente 12 an den komplementären selbsthaftenden Elementen in Form einer flexiblen Schlaufe festhalten können, die zu den selbsthaftenden Streifen 8 des Bezugs 6 gehören; die selbsthaftende Schicht 12 und die selbsthaftenden Elemente 8 sind im Stand der Technik gut bekannt und werden insbesondere unter der Marke VELCRO^® vermarktet;
• – und eine hintere Fläche 7b, die von einer flexiblen Trägerschicht 13 aus gewebtem Stoff oder Vlies oder aus Schaumkunststoff, etwa aus Polyurethanschaum beispielsweise mit einer Dichte von 15 bis 60 Kilogramm pro Quadratmeter gebildet wird, wobei die Trägerschicht 13 mit der selbsthaftenden Schicht durch Kleben, oberflächliches Verschmelzen der Trägerschicht mit einer Flamme unmittelbar vor dem Anlegen der selbsthaftenden Schicht auf der Trägerschicht 13 oder auf andere Art fest verbunden ist.

In addition, also the backrest 4 the seat of a padding, for example made of polyurethane foam formed. This padding is also carried by a rigid fitting and is covered by a cover, which also has holding devices 7 . 8th such as the previously described may be firmly connected to the padding. Every self-adhesive band 7 that in the upholstery 5 can be, for example, one as in the FR 2 761 863 and having:

• - a front surface 7a which is formed by a self-adhesive layer; this may be, for example, a layer obtained by extrusion or a woven or knitted textile layer containing the self-adhesive elements 12 The self-adhesive elements may each have the form of a hook, for example a flexible handle ending with an open eyelet, with a flared head, with a point in the form of a hook or the like, wherein the self-adhesive elements 12 can adhere to the complementary self-adhesive elements in the form of a flexible loop, the self-adhesive strip 8th of the reference 6 belong; the self-adhesive layer 12 and the self-adhesive elements 8th are well known in the art and are mainly marketed under the trademark VELCRO ^®;
• - and a rear surface 7b that of a flexible backing 13 woven or nonwoven fabric or foamed plastic, for example of polyurethane foam, for example, having a density of 15 to 60 kilograms per square meter, the backing layer 13 with the self-adhesive layer by gluing, superficial fusion of the carrier layer with a flame immediately before the application of the self-adhesive layer on the carrier layer 13 or otherwise connected in any other way.

The carrier layer 13 For example, a thickness of the order of 3 millimeters at a width 1 in the order of 12 millimeters.

According to the invention, the rear surface 7b of the adhesive tape 7 at least one anchoring element 14 ( 3 ) when molding the here from the upholstery 5 formed carrier 5 completely immersed in the foam plastic. The This anchoring element, extending over the entire width of the band 7 is advantageously made of flexible materials, which in molding the carrier or the padding 5 can adhere to the foam plastic.

According to a first embodiment, the in 3 and 4 illustrated anchoring element 14 directly from one piece with the tape 7 produced. The anchoring element 14 has the shape of an anchoring loop 15 with two ends 15a and 15b made of the same material as the band 7 are. The anchoring loop 15 So is from a longitudinal section of the tape 7 formed and held in place by their ends 15a and 15b be connected to each other. The two ends 15a and 15b the anchoring loop 15 can by a clamp or a seam 24 or even by gluing together prior to molding the foamed plastic.

For the production of in 2 illustrated carrier or padding 5 becomes a form 16 like those in the 8th and 9 shown used form, this has an inner surface 17 on, which has a cavity for molding 18 determines its shape of the outer shape of the upholstery 5 equivalent.

The inner surface 17 the shape has two ribs 20 on, their shape to that of the slots 11 is complementary, in the upholstery 5 to be trained. These ribs 20 jump into the interior of the cavity for molding 18 in front.

The inner surface 17 The mold is hollowed out so that several longitudinal grooves 19 are formed, each a slightly smaller width than the width 1 of the adhesive tape 7 exhibit. To the desired arrangement of the bands 7 on one side of each slot 11 as in 2 are also shown in one of the two side surfaces, each rib 20 facing the form, throats 19 intended. How closer in 9 is shown in each of the throats 19 a self-adhesive tape 7 guided, with one or more anchoring loops before 15 have been shaped regularly or irregularly over the entire length of the throat 19 can be distributed. Of course, those from the band 7 shaped anchoring loops 15 be located exactly where the holding elements 8th of the reference 6 high forces on the self-adhesive tape, more precisely on its retaining elements 12 to exercise.

So it is sufficient after making the anchor loops 15 from the tape 7 , the self-adhesive band 7 in the throat 19 the inner surface 17 the form 16 introduce. The section of the front surface 7b of the band 7 that deals with the retaining elements 8th of the reference 6 is to hook, then from the cavity to molding 18 through a carrier layer 13 separated at the edges of the throat 19 is applied. If the self-adhesive tape 7 so in the throat 19 is arranged, the anchoring element extends 14 here from an anchor loop 15 is formed, over the throat 19 out.

The longitudinal section of the carrier layer 13 in the throat 19 is arranged so is partially enclosed by the polyurethane foam, the padding 5 forms when the upholstery 5 by injecting polyurethane foam into the mold 16 is formed while each anchor loop 15 completely sunk in the polyurethane foam. The self-adhesive elements 12 that with the self-adhesive elements 8th of the cover are in turn at no point in contact with the injected foam, since the corresponding throat 19 from the carrier layer 13 is sealed in a tight manner.

It is noted that the throat 19 also incomplete of the carrier layer 13 can be closed, so that a small amount of polyurethane foam penetrates the throat. In view of the viscosity of the injected polyurethane foam, this pollutes the self-adhering elements 12 of the band 7 but only on a small area.

When removing the padding 5 out of shape remain the self-adhesive tapes 7 through the anchor loops 15 consisting of longitudinal sections of the tape 7 were made with the upholstery 5 firmly connected.

Also, attach the anchor loop 15 after the in 4 illustrated embodiment, a hollow interior 15c solid, in which the polyurethane foam also penetrates during injection.

According to another, in 5 illustrated embodiment, the anchoring loop 15 or more precisely their ends 15a and 15b by means of a small textile strip 21 , such as nonwoven fabric, which is a buckle of substantially the same width as the band 7 forms. This fleece strip 21 is against the front surface 7a of the tape or more precisely against the self-adhesive elements 12 pressed so that the anchoring loop 15 before inserting the tape 7 in the throat 19 the form 16 is formed.

According to another, in 6 illustrated embodiment, the anchoring loop 15 from the tape 7 and before shaping the vehicle 5 be formed by a strip 22 made of textile material such as fleece between the two substantially mutually facing walls of the anchoring loop 15 is arranged. In this case, it is sufficient to the fleece strip 22 on a longitudinal section 15c the front surface 7a of the strap and then another longitudinal section 15d the front surface 7a to turn the tape around in the 6 shown anchoring element 14 to build. In this case, the self-adhesive tape 7 also in the throat 19 arranged so that the self-adhesive elements 12 the front surface 7a of the band, with the retaining elements 8th of the reference 6 should work together, directly on the ground 19b the throat 19 be arranged and pressed against him.

After another, in 7 illustrated embodiment, the anchoring element 14 also from a strip 23 Made of flexible material that is not part of the self-adhesive tape 7 is. The stripe 23 made of flexible material, which may in particular be made of fleece, extends between two ends 23a directly on the self-adhesive elements 12 the front surface 7a attached to the strap so that the strip of flexible material 23 An anchoring loop on the rear surface 7b of the band forms.

After another, in 10 illustrated embodiment, it is also possible, the throat 19 with several transverse ribs 19a to provide, right on the ground 19b the throat 19 are attached and over the throat 19 extend beyond. So it is enough when inserting the tape 7 the front surface 7a of the band against the ground 19b the throat and against the transverse ribs 19a to press to form open anchor loops, which are then each substantially U-shaped. After injection and curing of the foam plastic is the carrier 5 then with a crenellated ribbon 7 Mistake. This is the reason for the flexibility of self-adhesive tapes 7 and the anchoring elements 14 made of flexible materials possible to arrange the bands in curved throats of the mold and also to follow surfaces in three dimensions and thereby for a perfect anchoring of self-adhesive tapes 7 in the upholstery 5 to care.

After another, in the 11 and 12 illustrated embodiment of the invention, the self-adhesive tapes and their anchoring elements 14 also at the bottom of the slots 11 the seat or the carrier 5 and be arranged on the upper bearing surface of the seat or the carrier. In this case, the throats are 19 which are the self-adhesive tapes 7 during molding, right at the ends of the ribs 20 the form 16 provided so that after curing of the plastic padding 5 with slits 11 is obtained, whose bottom with tape 7 is provided as in 12 shown.

In addition, in any case, the carrier layer 13 which is the back surface 7b of the band 7 forms, be made of flexible natural or synthetic fibers, for example, from textile fibers, especially felt fleece.

Likewise, in any case, any self-adhesive tape with its anchoring elements 14 in a throat 19 in an element other than the form 16 are arranged, this other element then into a receptacle of complementary shape in the inner surface 17 the form 16 and for example in the rib 20 is introduced.

After all, in any case, all or part of the self-adhesive strips 8th at the reference 6 through a continuous layer 25 be replaced from loop material (see 12 ), which is the inner surface of the cover 6 forms.

Claims (5)

By plastic molding obtained carrier with at least one self-adhesive tape ( 7 ), along a length (L) and across a width ( 1 ) and on the one hand a so-called front surface ( 7a ) with self-adhesive elements ( 12 ) provided with complementary retaining means ( 8th ) of a reference ( 6 ) catching the wearer ( 5 ) at least partially covered, and on the other hand, a so-called rear surface ( 7b ), the front surface ( 7a ), the rear surface ( 7b ) is sunk during molding in the foam plastic and so the band ( 7 ) with the carrier ( 5 ), the rear surface ( 7b ) of the band ( 7 ) at least one anchoring element ( 14 ) substantially in the form of an anchoring loop ( 15 ; 23 ), which is between two with the self-adhesive tape ( 7 ) and is completely recessed in the foam plastic, wherein the anchoring loop ( 15 ; 23 ) is made of flexible material which can adhere to the plastic foam during molding of the carrier and wherein the anchoring loop ( 15 ) from a longitudinal section of the band ( 7 ), the two ends ( 15a . 15b ) of the anchoring loop ( 15 ) made of the same material as the band ( 7 ), characterized in that the anchoring loop over the entire width ( 1 ) of the band ( 7 ). carrier according to claim 1, wherein the flexible material is among the foamed plastics and the materials based on flexible fibers. A carrier according to claim 1 or 2, wherein the anchoring loop is secured by a strip of flexible material ( 23 ) which runs transversely to the band, the two ends ( 23a ) of the strip ( 23 ) on the self-adhesive elements ( 12 ) of the front surface ( 7a ) of the band ( 7 ) are attached. Support according to claim 1, in which the two ends ( 15a . 15b ) of the anchoring loop ( 15 ) before molding the foamed plastic by means of fasteners ( 21 ; 24 ) are joined together so that when forming the foam plastic, the anchoring loop ( 15 ) from the band ( 7 ) can be obtained. Process for the preparation of a support according to any one of the preceding claims, wherein the support ( 5 ) in a form ( 16 ) with an inner surface ( 17 ) having a cavity for molding ( 18 ) and at least one throat ( 19 ) which in length and width substantially the self-adhesive tape ( 7 ), the method comprising the following steps: - inserting the self-adhesive tape ( 7 ) in the throat ( 19 ) of the inner surface ( 17 ) the form ( 16 ), so that the section of the front surface ( 7a ) of the band ( 7 ), which interacts with the holding elements ( 8th ) of the reference ( 6 ), from the cavity to the mold ( 18 ), and - injecting a non-polymerized foamed plastic containing the carrier ( 5 ), into the cavity for molding ( 18 ), characterized in that the anchoring loop ( 15 ; 23 ) of the band ( 7 ) over this throat ( 19 ), wherein the foam plastic, the anchoring loop ( 15 ; 23 ) completely surrounds and adheres to it during its polymerization and in which the throat ( 19 ) of the inner surface ( 17 ) the form ( 16 ) at least one transverse rib ( 19a ), which extends over the throat ( 19 ) and in which the front surface ( 7a ) of the band ( 7 ) when inserted in the throat ( 19 ) and against the at least one rib ( 19a ) is pressed to release the anchor loop ( 15 ) to build.