DE1292092B - Elastic fabric - Google Patents

Description

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The invention relates to an elastic draw thread of the elastic warp threads and the woven fabric made of covered elastic warp threads' weft threads made of a known fiber and weft threads made of textile fibers. mixture of 10 to 50 ° / ₀ of polypropylene and

Elastic fabrics of this type will usually consist of the remainder of cellulose.

by interweaving elastic threads made of fabric. A mixed fabric is already known cut rubber, extruded latex rubber, (French patent specification 1282 388), its threads Polyurethane elastomers and the like with weft threads made from a fiber mixture of polypropylene and Textile fibers made. Cellulose are made, the threads depending on the

In the manufacture of such fabrics, the fabric is also intended to be used for 20 to 70% fibers It is customary to contain the elastic core threads with textile thread ίο made of polypropylene. This mixed fabric by helical wrapping, braids or od. The underlying problem is a tear and abrasive like. to wrap around the physical intrinsic firm tissue with above all good wrinkle recovery to regulate business (French patent specification 1131302). to manufacture. Step at this known tissue Since fabrics of this type are often used for corsetry, however, the problems on which the invention is based supportive bandages, elastic inserts in clothing 15 of different shrinkage of core or pieces, such as shorts and the like, are used, it is not on the core and coat of an elastic thread, It is common practice to use coated elastic threads so that this known fiber mixture can also be used use ("Melliand Textile Reports", 1948, p. 358, solution of the link to the subject matter of the invention Split). standing problems could not give any suggestion.

Theoretically, all of the threads can be used for excess draw and be used as a shot. The fiber mix can vary within wide limits, By far the greatest use, however, is cotton. A considerable improvement is already made with one threads and spun man-made fibers made of cellulose with a proportion of only 10% polypropylene. The found. Such threads are easily accessible, improvement reaches its maximum value at around 40% feel the way the consumer wants 25 polypropylene. When using higher polypropylene and have been widely recognized as being practical in proportion to no more significant changes threads to be used in all cases found. obtain. For other reasons it is generally

Especially when wearing fabrics, it is undesirable to destroy more than 50% polypropylene other two problems. Turn the first problem over, especially because then gradually the is that of shrinking or shrinking because both the grip of the fabric is adversely affected. A Cotton as well as synthetic fibers made of cellulose according to another point of view is that the polypropylene shrink after washing. The elastic core, which is generally more expensive than synthetic fibers If it is wrapped or coated, cellulose or cotton will shrink by itself, which is why it is economical Of course not, which is why the shrinkage or the reasons are preferred, which are to achieve satisfaction of the thread should be as small as possible. 35 gender results just need percentages if also insert the sheath of the core thread.

possesses a certain degree of elasticity, it is an advantage of the subject matter of the invention,

However, elasticity is considerably less than that of the usual manufacturing methods for Kernes itself. Even so, the shrinkage is an annoying elastic thread cover or the usual web feature represents a considerable 40 procedure for elastic fabrics in no way Degree of shrinkage of about 15% with the usual can be influenced. The improved results according to Cotton threads for wrappings or coverings are the subject of the invention without additional avoid. You have this as an unavoidable borrowed expense in terms of the machine in the case of the over-shortage have to accept so far. Draw production or achieved when weaving.

The second problem arises from the elastic 45 To achieve the improvement according to the invention fabric itself. It is common when weft tree dangling it depends on the type of elastic core Using wool or synthetic fibers made from cellulose does not apply to it. The improvements are independent bringing an abrasion to the edges of the fabric, where the matter of whether the elastic core is cut out Weft threads are sharply bent and with or extruded rubber, polyurethane or similar body or other surfaces that are made of abrasion-like material, always the same. Only Causes can, come into contact, are connected to explain the subject matter of the invention is. This is a major deficiency, since the following examples related to rubber cores due to the abrasion, frayed weft threads occur on the edges, which are not The percentages given relate to the only affect the appearance but also add weight.

uncomfortable for the wearer of the elastic fabric 55 for example

feel. If a weft thread breaks or

is rubbed, it will in most cases take off, to produce an elastic fabric

so that in general after the appearance of a rubber warp thread with a core of about 2820 m / kg strong abrasion of the edges the fabric no longer (1400 yds / lb) and a double spiral wrap is useful, although the elastic contained therein uses threads made from a mixture of fibers threads would last for many months. 12.5% polypropylene and 87.5% synthetic fibers

The two defects described were made on the basis of which cellulose was spun. It becomes a weft Area of manufacture of elastic fabrics of about 16,900 m / kg (8400 yds / lb) from the same always viewed as very serious. The invention mixture used. There are 60 weft threads Therefore, the underlying task is to remedy these defects 65 to 2.54 cm.

to be eliminated as far as possible. For comparison, a second fabric was shown below

an elastic fabric of the aforementioned use of 100% cotton of the same Kind achieved essentially by the fact that the over-thread thickness for the sheath and the weft threads

Claims (1)

3 4 manufactured. This fabric is referred to in this and in the following examples in the AATCC Technical Manual Test Method as "cotton control 93-1959 described accelerotors on the edge fabric". abrasion tested. This test is a highly accelerated test. Both fabrics were then washed under the test required in AATCC, in which the standard washing conditions specified in a few minutes of the Technical Manual show the same abrasion as after many months or even conditions. The shrinkage was obtained as years of normal use. The usual measured. ^{The cotton control fabric showed initial abrasion times} of 14.5% for the invention. The fabric according to the invention and for the cotton control fabric had a shrinkage of 9.5% for the fabric, namely 3 to 4 minutes. . . ίο A range is given because the test example 2 is usually carried out several times and either the procedure described in example 1 was a mean value or the range is noted,
repeated except that a blend of fibers. The fabrics were then cast for ten washes of 25% polypropylene and 75% synthetic fibers using ten automatic washes of cellulose. The shrinkage after 15 hypochlorite bleach and 10 drum dry washes was 7.5%. nations. The washing and drying was removed. -, ο speaking AATCC test for both tissue in Example 3 _{exactly the g} i _e j _{che manner} performed. After this The procedure described in Example 1 was repeated for the tenth washing and drying times, with the exception that a fiber mixture was repeated for 20 tests. Surprisingly, 37.5% polypropylene and 62.5% synthetic fibers fabric according to Example 3 show an increased abrasion time of cellulose. The shrinkage 5.5 to 7 minutes. The cotton control fabric was 5.5%. however, the same wear time of 3 to 3V2 minutes Example 4 ^{w 'e} ^ ^{em before} washing. The fabric of the invention 25 thus exhibited a practicality after washing The procedure described in Example 1 was 100% higher abrasion resistance. This means, repeated with the exception that a fiber mixture that the fabric of the invention twice as long Made of the same amount of polypropylene and synthetic fibers as known fabrics, these can be worn made of cellulose was used. The shrinkage kind. The reasons for this large increase in was 5.5%. 3 ° abrasion resistance from washing are not yet As can be seen, the minimum shrinkage is clarified at. This increase is extreme in textiles a value between 25 and 37.5% polypropylene unusual appearance. The invention achieved. This minimum shrinkage remains then almost always used for clothing fabrics even with larger quantities of polypropylene, those used that are washed frequently, so that at same. This is an extremely surprising result. 35 their normal use the proven strong Assuming that the shrinkage comes into play through the increase in abrasion resistance. If the presence of polypropylene is reduced, the initial abrasion resistance is of secondary importance One would expect the shrinkage to be all the more important because the clothing items many times would decrease, the larger amounts of polypropylene are washed until they reach the state at be used. The fact that at a 4 ° which, in the case of the use of cotton Polypropylene content of over 37.5% no further threads unusable due to edge abrasion Reduction in shrinkage is done is totally
inexplicable. One can only assume that the Surprising results achieved according to the invention. not an addition of the properties of poly-45 propylene on the one hand and synthetic fibers made of cellulose 1.Elastic fabric made of coated elastic on the other hand are due. The more than see warp threads and weft threads made of textile 2V ₂ times greater shrinkage in the case of fibers, characterized in that Cotton yarn becomes the cover threads of the elastic warp threads without any undesired twist deterioration of the grip avoided. The one after the 50 and the weft threads from a known one The above examples obtained fabric he fiber mixture of 10 to 50% polypropylene and fulfilled all requirements made in this field, consisting of cellulose as a remainder, if they are with those with cotton wrapping 2. Elastic fabric according to claim 1, characterized threads compares. In other words, the reduction marked that the cellulose fibers synthetic the shrinkage will be without loss of other 55 fibers, desired properties achieved. 3. Elastic fabric according to claim 1, characterized The fabric described in Example 3 and characterized in that the elastic core of the Cotton control fabric with a 100% chain thread in a known manner Existing cotton weft yarns were made with the help of rubber.