DE19724698A1 - Carpet with secondary backing incorporating loops for hook and loop fastening - Google Patents

Abstract

The carpet (T) has a primary and secondary backing (I,II) and is laid with the help of hooked tape (4) which grips projecting loops in the secondary backing (II). The latter is made of a reinforced non-woven layer (8) with yarns (15) running through it to form projecting loops (17) on the side facing the line of hooks (23) made of e.g. polypropylene or polyethylene.

Description

The invention relates to a first and an existing carpet, the The back has free-standing loops, the tep pich by means of a cooperating with the loops Hook tape is installed and the back of a second Fleece layer is formed.

Such hook-and-loop securing of the carpet is included example from GB-PS 1 546 901. Correspond de Also known as Velcro fasteners Apart from carpets, they are of course also for that correct laying and securing of carpet tiles with Advantage applicable.

The object of the invention is to fix the carpet side conditions for the use of the hook strap improve.

The technical problem lies in the inner context hold of the generally laminate-like Tep pichs or the carpet tiles. Lots with lost tied layers bind bulging on.

This task is first and foremost Subject of claim 1 solved, being abge is that the nonwoven layer is a consolidated nonwoven layer and this penetrating, the hook track has threads forming free loops. As a result, there is an inherently high-strength docking element as a second back. It is conveniently a Needle felt element of high strength and density. The fleece layer will act like a retaining clip through the  the threads, the ends of which are still in free loops pass over, held together flawlessly. The Ver final situation is improved. This is how the hooks grip of the hook tape except in the loops of the fleece structure door of the fleece layer into the free loops a. The second back is useful as a laminate Siert and accordingly multi-layered. Here too have the threads a favor the layer cohesion de function. Even after long periods of use does not face the dreaded, puff pastry Layer loosening. A design of even own permanent meaning arises from the fact that the Threads, starting from an intermediate layer, with the cunning fen forming sections across the neighboring locations suffice and thus penetrate all layers of the fleece layer. The intermediate layer thus forms a stock layer on threads that are grasped when needling and so, alternately branched, stick-like in the neighboring areas are finally with free loops. Finally, it proves advantageous that the fleece layer facing away from their two Flat pages a different amount of free has standing fibers. In return, it is finally still advantageous that the threads on each other flat sides of the fleece layer facing away from under different proportions of free-standing loops form. As a rule, the needle can density or frequency serve, this also on the side gene.

The invention is further based on the following attached drawing, which, however, is only a Illustrates embodiment explained. It shows.  

Fig. 1 is a vertical section through a cut Teppichab connected via a hook tape with a floor or the like, largely schematic form,

Fig. 2 in an exploded view of a carpet section showing the elements forming the carpet and the surface fastener

Fig. 3 shows a portion of a hook tape with an adhesive layer and protective cover, which is reproduced in high magnification.

The carpet T shown has a top running surface 1 . This can be formed by loops or in the classic way by cut open tufts (velor).

The basic fabric of the carpet T bears the reference number 2 . The underside of the base fabric 2 is provided with an adhesive layer 3 , whereby this part to be referred to as first back I can be connected to a second back II.

On the underside of the second back II, the carpet T can be fixed non-slip on a floor 6 via a hook tape 4 via a layer of pressure-sensitive adhesive 5 . The connection is reversible. In the stored state, the pressure-sensitive adhesive layer 5 is secured by a protective cover against the force reducing influences, such as dust, for example.

Regarding the second back II it is a Needle felt element. This is structured quite firmly  and stiffens the congruent under put first rapture I.

The second back II is constructed like a laminate and realized as a cross-layer solidified nonwoven layer 8 . On both sides of an intermediate layer 9 of this fleece layer 8 , at least one adjacent layer 10 or 11 extends. The neighboring location denoted by 10 is an upper adjacent location closer to the first back I. The upper side of the back is covered by the adhesive layer 3 already mentioned.

The adjoining the intermediate layer 9 , the lower neighboring layer 11 is covered by a non-woven fiber layer 12 , forming a fourth layer of the non-woven layer 8 .

The tangled nonwoven layer 12 has a large amount of smart so that there is a good connection with hook heads 13 of the hook band 4 . The hook heads 13, which are only shown as a small section, are realized on pairs of hooks 14 , which are close together. There is a larger gap between the pairs of hooks than between hooks 14 . The hook openings of two adjacent hooks 14 are directed in opposite directions. The hooks 14 are each in a row. They form multi-track, parallel hook tracks 23 . The corresponding row-shaped arrangement is symbolically represented by a linear structure in FIG. 2.

Instead of hook 14 , it can also be mushroom heads. In this regard, reference is made to the not previously published Gm application 297 06 989.6. Their content is also included here in full, also to form claims. The film-like hook web 23 is made of plastic, for example polypropylene or polyethylene.

The three layers 9 , 10 and 11 as well as the random fiber nonwoven layer 12 as the fourth layer of the nonwoven layer 8 are held together by the layers or layer essentially crossing threads 15 in the shortest possible way.

The threads 15 are thicker and also more stable than the fibers of the other layers or layer 12 . The threads 15 passing through the laminate in the thickness direction are particularly clear from FIG. 1. They are mainly located in the intermediate layer 9 , where they form sam stock-forming between the neighboring layers 10 and 11 .

Under the needle process, sections 16 of the flattened threads 15, which are otherwise mainly plane-parallel to the plane of the second back II, are taken from the intermediate layer 9 and pushed into the top and bottom side layers 10 , 11 . This leads to a kind of riveting structure.

The sections 16 appear in part as free-standing, closed loops 17 . These form accordingly stronger hook eyelets for the hook heads 13th The free loops 17 facing the hook band 4 occur in addition to the loops 18 which the non-woven fiber layer 12 presents as eyelets. The more stable loops 17 extend with their hairpin-leg-like sections 16 as anchors into the highly consolidated interior of the multilayer nonwoven layer 8 , ie the layer of threads 15 .

At the top of the fleece layer 8 , there is an advantageous prerequisite for the anchoring there to the adhesive layer 3 . Because there too, sections 16 of the same designation project freely with their bends as loops 17 . These turns of the loops 17 are embedded in the adhesive layer 3 for anchoring in the adhesive layer 3 in the adhesive layer 3 .

The fiber structure of the above-mentioned top of the upper neighboring layer 10 likewise forms loops originating from the tangled fibers, which are designated here by 19 . This structure adheres to or drowns in the adhesive boundary layer facing it and is therefore well anchored.

The further structure of the carpet T is such that the fleece layer 8 on its two mutually facing flat sides has a different amount of free-standing fibers 19 . It is further the case that the threads 15 also form a different amount of free-standing loops 17 on both flat sides of the fleece layer 8 facing away from one another.

In FIG. 1, the fibers that grip the nonwoven material when needling are also specifically designated, with the reference number 20 . The needle funnels 21 are usually limited by an indented fiber sheet, in which needles the thread 15 is also detected. The corresponding situation is not shown in the drawing in order to maintain clarity.

Not shown and described is a carpet or carpet tile laying system which can be reached in this context and which consists of hook tape 4 and the loop element connected to the carpet T. In this regard and with regard to the carpet, reference is also made in detail to EP-0 595 063 A1. The content of this European patent application is hereby fully incorporated into the disclosure of the present application, also for the purpose of including features of the referenced patent application mentioned in the present application.

Claims (5)

1. From a first and a second back (I and II) existing carpet (T), the second back (II) having free-standing loops, the carpet (T) by means of a cooperating with the loops of the ( 4 ) is laid and the second back (II) is formed by a non-woven layer ( 8 ), characterized in that the non-woven layer is a solidified non-woven layer ( 8 ) and has penetrating threads ( 15 ) forming free loops ( 17 ) facing the hook web ( 23 ). 2. Carpet according to claim 1 or in particular according thereto, characterized in that the second back (II) more is layered. 3. Carpet according to one or more of the preceding claims or in particular according thereto, characterized in that the threads ( 15 ), starting from an intermediate layer ( 9 ), with loops ( 17 ) forming sections ( 16 ) across the neighboring layers ( 10 , 11 ) are sufficient and enforce all layers ( 9 to 11 or 12 ) of the nonwoven layer ( 8 ). 4. Carpet according to one or more of the preceding claims or in particular according thereto, characterized in that the fleece layer ( 8 ) on its two mutually facing flat sides has a different amount of free-standing fibers ( 19 ). 5. Carpet according to one or more of the preceding claims or in particular according to that the threads ( 15 ) on both mutually facing flat sides of the nonwoven layer ( 8 ) form a different amount of free loops ( 17 ).