Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Woven fabric – Woven fabric including a nonwoven fabric layer other than paper
Reexamination Certificate
1997-01-03
2001-06-05
Cole, Elizabeth M. (Department: 1771)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Woven fabric
Woven fabric including a nonwoven fabric layer other than paper
C442S281000, C442S319000
Reexamination Certificate
active
06242372
ABSTRACT:
This invention concerns a non-woven composite of a fabric or a knitted fabric and at least one layer of a non-woven fabric. This invention also concerns a process for the production of such a non-woven composite, as well as its use as a stiffening lining, in particular a patch lining.
Such linings have been worked in for many years past to strengthen articles of clothing, in particular in ready to wear clothing for ladies and gentlemen. Depending on the processing method, they can extend, for example, over the entire front portion of a jacket or they are processed only as so-called chest canvas. The stiffening linings should provide the front portion of the article of clothing with form stability, and in addition a good recovery and/or snap back capability is expected from the stiffening linings which are used respectively.
Until now, conventionally special fabrics, usually calico fabrics have been used on the market, and these fabrics have a weight range from about 120 to 260 g/m
2
. Corresponding knitted fabrics are also to be found in individual cases in the market.
In order to achieve the desired good recovery capability, above all in the weft direction, in these fabrics and knitted fabrics use is preferably made in the weft of coarse yarns, which are mainly spun in the semiworsted yarn process. The fiber components which are used are primarily of natural origin. In particular, animal hairs are used in the weft, in which depending on the type of lining, these yarns are inserted in the fabric in the weft change with pure viscose yarns, wool yarns or mixtures of them. The animal hairs can also be spun in combination with coarse viscose fibers. For special preference, hairs of african goats or yak hairs are also used. Use is also made gladly and especially frequently of horse hairs, in particular twists of these hairs. But the disadvantage here is that these horse hairs are relatively expensive.
The use of animal hairs has further substantial disadvantages. Thus animal hairs have to be subjected to substantial cleaning processes, which leads to the fact that these processes are very laborious and consequently are also costly. In addition, the use of animal hairs is disadvantageous, because frequently they may initiate allergies among the workers who have to carry out the cleaning of these animal hairs. In addition, the yarns which are produced from animal hairs or mixtures thereof are subject to very strong fineness fluctuations (number fluctuations), which in turn brings with it weight fluctuations in the finished product.
In addition, multicomponent yarns, so-called core yarns, are used in the weft, which for some time past have also been produced in the Dref process. These yarns also contain as the resilient component animal hairs or preferably synthetic monofilaments and/or multifilaments. Characteristic is the structure of one or more resilient components, as well as of coat fibers.
Above all, in the case of yarns which contain a synthetic monofilament, there are always problems of the type in which the monofilament in these yarns tends to displacement against the coat fibers. Then on the cut edges of the ready to wear reinforcement lining, the monofilaments emerge and on the finished ready to wear part they can even pierce through the outer fabric.
In all the stiffening linings of this type, additional linings are still needed in the clothing in order to achieve the desired stiffening effect. But the processing of these linings and of the additional linings necessitates high costs for production and materials, as well as particularly great care when producing the patch linings, their positioning and clean edge stitching. The patch linings and the additional lining have to be positioned exactly to a millimeter and they are combined by costly sewing processes to form a total patch.
Another type of patch lining is described in EP 0 514 563. This concerns a warp-knitted fabric, which is provided in the weft with resilient threads of core yarns. This warp-knitted fabric is connected with a basic non-woven fabric on a warp knitting machine. The resultant patch lining is used as a supplementary reinforcement lining for the actual patch lining for the protection, for example, of shoulder, axilla and arm hole zones. But due to the method of production, the strength and the volume of the basic non-woven fabric is extremely limited, because during the loop formation, the warp yarns strongly tie together the basic non-woven fabric, and therefore in the warp direction along the needle wales, constrictions are formed in the basic non-woven fabric, which in the case of sensitive outer fabrics show through the outer fabric.
Therefore the present invention is based on the technical problem of developing a non-woven composite which on the one hand can be produced economically and on the other does not have the disadvantages of the above-named patch linings, and is also simple to process in the making up. In particular, the non-woven composite should not show through the outer fabric of articles of clothing.
In order to solve this problem, in accordance with the invention a non-woven composite of the type named initially is suggested, in which the fabric or the knitted fabric and the layer(s) of non-woven fabric are bonded with each other. The fabric or knitted fabric can be bonded on one side or also on the upper and lower sides respectively with a layer of non-woven fabric.
The recovery capability of the non-woven composite is achieved by a fabric or knitted fabric which provides resilience. The weft yarns of the fabric or knitted fabric are monofilaments or multifilaments or a combination of them. It is also possible that the monofilaments are twisted to form a multifilament yarn, which then forms the weft threads which provide resilience. The material from which the weft yarns are produced is preferably polyamide 6, polyamide 6,6, polyester or polypropylene or also mixtures of synthetic fibers. For example, the weft yarns can be monofilaments with a fiber diameter of 0.05 to 0.40 mm.
But it is also possible to use thread sequences with monofilaments and multifilaments as well as with conventional spun threads. Equally, as the weft yarns, multifilaments can be used which have a titer in the range from 400 to 2000 dtex.
In accordance with the invention it is also possible to bond the warp-knitted fabric which is known from EP-A-0 514 563 with at least one layer of a non-woven fabric, thus obtaining the new non-woven composite.
The warp yarns of the fabric or of the knitted fabric are preferably cotton, wool or other natural fibers or viscose, polyester, polyamide, polyacryl nitrile or polypropylene or mixtures thereof. Preferably the warp yarns have finenesses in the range from 25 to 400 dtex, preferably in the range from 100 to 400 dtex. Filament chains can also be used, wherein they may be textured in addition. When monofilaments are used as warp yarns, they can also have a fiber diameter of 0.05 to 0.40 mm, as in the case of the weft yarns described above. Naturally it is also possible to carry out twisting of a plurality of such monofilaments to form a multifilament which then constitutes the warp thread.
If a knitted fabric is used for the non-woven composite of this invention, preferably multifilaments are used in the chain having a fineness in the range from 25 to 400 detex.
The non-woven fabric which is used in accordance with the invention for the production of the non-woven composite can be a needle non-woven fabric, a water jet bonded, bonding agent bonded or a dot-welded non-woven fabric, a knitted non-woven fabric or a foam non-woven fabric. It is also possible to use a combination of these materials. The weight of the non-woven fabric is preferably in the range from 10 to 180 g/m
2
.
Because of the structure of the non-woven composite of the plurality of layers which are bonded together, the disadvantages of the previously known lining types are avoided. The monofilaments which are used and which provide the resilience are firmly fixed by the bonding, and the ends of thes
Cole Elizabeth M.
Kufner Textilwerke GmbH
Scully Scott Murphy & Presser
Singh Arti R.
LandOfFree
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