FR2795098A1 - WOVEN ARTICLES, "EXTENSIBLE SPONGE" - Google Patents

Abstract

Absorbent stretch fabric has some weft and/or warp yarns of elastic material. The fabric, made from interwoven weft (3) and warp (1, 2) yarns, with at least some of the latter being looped, has at least one weft and/or at least one warp yarn made from an elastic material. The other yarns parallel to the elastic yarns are made so that when the elastic yarns are at rest the other yarns are twisted, allowing the article to be stretched in the direction of the elastic yarns by a given amount. The ratio and direction of the elastic yarns depends on the required elasticity and direction of stretch, and can be between 10 and 90% in either or both directions and e.g. 33%. The looped yarns are of a non-elastic material, and can be cut to give a plush effect.

Description

The present invention relates to the method of manufacturing an article

  textile, made of terry-type terry cloth such as bathroom linen and everything else

  brings together and has the particularity of being extensible.

  Textile articles are known which have the same particularity (extensibility), as in clothing and its derivative products, automobile upholstery, protective covers ... but their functionality does not consider either closely or by far the

  Characteristics specific to a terry woven article such as that of the invention.

  There are products such as headbands or other handles (used in the field of sport) which are both sponge and stretchable, but these exist only in small width and obtaining them in no way resemble the present invention , and do not take into account all of the prerequisites of a terry woven type article

  terry commonly used in the field of bathroom linen.

  The present invention aims to eliminate these drawbacks and in fact makes it possible to obtain the following results: - Average extensibility before washing (without being limiting) = 35% minimum - Average extensibility after 3 washes (without being limiting) = 25% minimum - Deviation dimensional dimension, elastic direction after 1 wash, dried flat = 1% - Average dimensional deviation, elastic direction after 3 washes, dried flat = 6% - Average dimensional deviation, non elastic direction after 1 wash, dried flat = 7% - Average dimensional difference, non-elastic direction after 3 washes, flat-dried = 7.5% - Average weight difference after 1 wash = 1% - Average weight difference after 3 washes = 1% - Wash resistance at 60c: degradation = 4 to 5 disgorgement = 3 to 5 - Light fastness = 4/5 minimum - Average breaking strength, elastic direction, (1 elastic thread in 3) 28 daN Average elongation in elastic direction (If it elastic in 3) = 60 % - Weight / m2 (without being limiting) = 300 grs / m2 minimum

  - Dimensions: in width = depending on the material available.

  in height = depending on the material available.

  - Weave the elastic thread taut (weft and / or warp use).

  - Item with good hydrophilicity, soft to the touch, flexible and

soft.

  The present invention considers the combination of threads having the same properties as cotton with threads with elastic power covered (or not covered) with a

other material such as cotton.

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  The means implemented are as follows:

  The present invention requires the use of a loom or weaving machine.

  It is obtained by the intertwining of two series of wires, perpendicular (+ -) between them. By way of nonlimiting example as in FIG. 1, we recognize the warp threads (loop chain (2) and bottom warp (1)) in the longitudinal direction and the weft threads (3) in the transverse direction As in Figure 2, there are two beams, a beam (1) for the

  bottom wires and another for the wires forming the loop (2).

  Indeed, re-use of materials required for the weaving of an article of sponge type, differs between the bottom threads (1) and the loop threads (2). We call more commonly

this characteristic, shrinking.

  All of the warp threads (1 2) are controlled (raised or lowered) by group in the case of dobby weaving of the order of 200 to 600 threads and individually (or by

  group) in the case of a jacquard weaving.

  The threads of the chains are tucked into the eyelets of the meshes, which are themselves integral with the healds and battens (4) in the case of a dobby weaving or integral with the arches

  operated by hooks in the case of a jacquard weaving.

  The action of raising or lowering, by group, the battens or the hooks causes the

  formation of the crowd (6) into which the weft thread (5) will be inserted.

  The opening of the crowd (6) must be done while maintaining a constant tension to

all the strings of the chains (1 i2).

  All the threads of the chains (1 2) have previously followed a setting process

  work which is essential to him before any use on loom.

  Weft threads (5) do not require special preparation, the thread cone

  feeds, via a donor, the frame vector.

  The donor employed is a device which calls the weft thread (5), stores it on a

  drum and dispenses it to the frame vector when needed.

  The donor is more commonly called a pre-deliverer and its advantage in use lies in the fact that it facilitates scrolling at high speed, while preserving a

regularity of output voltage.

  The formation of the loop is preferably carried out as follows; knowing

  that other training courses remain applicable to the present invention.

  During two consecutive weft thread inserts (5), the comb (7) via the flap (8) has a limited action on them, in the sense that it positions them at a certain distance from the fabric (9). Then, at the third weft thread inserted, the comb (7) brings back

  the assembly against the facade (9) to thereby form the loop and thus the desired fabric (10).

  By way of nonlimiting example as in FIG. 3 A, the threads of the chains of

  bottom and loop (1, 2) intertwine with the weft threads (3).

  Figure 3B specifies the armor used to obtain the above interlacing and Figure 4 gives the profile which results from the previous figures. We notice the visible loop on place (1), the visible loop on reverse (2), the positioning of the bottom warp threads (3), the insertion of the weft threads (4) in cotton and finally the advancement

of the comb (5).

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  During the operation time, the bottom warp threads are braked, very tight (far superior to the threads in the loop chain) in order to favor the sliding of the

loop wires.

  The method according to the invention comprises, in addition to the known method: 1) If the stretchable effect is sought in the weft direction, it is a matter of inserting a thread with elastic properties, such as a thread incorporating elasthane or gum during of the sponge cycle. As in Figure No. 6 A; depending on the desired elasticity and remanence, a proportion of yarn containing rubber or rubber (4) is inserted. Thus, at least one insertion of this thread, during the sponge cycle up to all the insertions. By way of nonlimiting example as in FIG. 6A, the bottom and loop warp threads (1l 2) are intertwined with elastic weft threads (4) or not

elastic (3).

  Figure 6B specifies the reinforcement used to obtain the above interlacing and

  FIG. 7 gives the profile which results from the preceding figures.

  Note the visible loop on the right side (1), the visible loop on the reverse side (2), the positioning of the bottom warp threads (3), the insertion of the elastic weft threads (4)

  and not elastic (5) and finally the advancement of the comb (6).

  If we insert a weft thread with elastane every 3 insertions in the loop part, it is preferable to have 1 of 2 in the flat transverse part

  (for hem use) to maintain a balance.

  In addition, following the various tests engaged, it is advisable to adopt more armor

  specific in this flat part, such as figure n 8.

  With the threads of the bottom and loop chains (1 2), a weft thread is inserted

  elastic (3) for a non-elastic weft thread (4).

  For the sake of the visual quality of the product, the same weave can be adapted for the longitudinal flat parts, parts which are more commonly called selvedges and which

frame the product.

  Besides, we modify the quantity of selvedge threads according to the woven article

  stretch sponge to reinforce the feasibility of the hemming.

  However, in the context of a stretchy woven article made up, in the sense that the desired product is obtained following a cut placed in a fabric + fancy stitching, the parameter "selvedge dimensions" is reduced to what is strictly necessary. it should be noted that the proportion of use of this said thread, during the sponge cycle does not harm

  not to the product but validates the notion of desired effect cumulated at the targeted cost price.

  In addition, the present invention aims to provide the consumer with a new concept

  bathroom linen that he uses daily.

  Indeed, by way of nonlimiting example, the towel becomes a bath towel without being more bulky. He discovers a new comfort by wrapping himself; as

  the bathrobe which also gains in comfort.

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  The concept of this product also applies if you want a velvet effect, that is to say

  that we will cut (shave) the head of the loop. according to a known process.

  In all cases, it is possible to obtain a terry woven article that is shaved and stretchable by

  weft and / or warp direction, so with a velvet effect on the right side and / or back.

  2) If an extendable effect is sought in the chain direction, it is a question of integrating a wire with elastic properties such as a wire comprising elasthane or gum, in the

  composition of a bottom chain warp.

  The loop chain, on the other hand, is not affected. We modulate an elasticity

  at the support of a terry woven article.

  Depending on the desired elasticity and remanence, a proportion of

  yarn comprising spandex in the chain of the bottom yarns.

  Thus, at least 10% up to 80-90% without going to 100% for cost reasons. By way of nonlimiting example as in FIG. 9 A, the threads of the chains of

  bottom and loop (1 r2-, 3) intertwine with the non-elastic weft threads (4).

  However, the bottom warp threads (1,2) are composed of elastic threads (1) and

  non-elastic (2), the loop warp threads (3) are non-elastic.

  Figure 9 B specifies the reinforcement used to obtain the above interleaving.

  3) Now a biextensible effect remains possible: namely to obtain extensibility

  and a persistence in the warp and weft direction.

  Then, it is a question of combining in order to obtain a balanced whole, the principles evoked in point 1 and point 2 and described without limitation, in figures n 10 A and n B. Thus, the bottom chain wires and loop (1 -2 3) intertwine with the elastic (4) and non-elastic (5) weft threads, as in figure n 10 A. The weave used is specified in figure n 10 B. D '' in general, the dimensions used on a weaving machine for the article

  terry woven will not match the final dimensions of this product.

  Indeed, several parameters modulate these dimensions: - Temperature variation during heat treatment, namely in dyeing

washing and drying.

  - Tension when weaving elastane or rubber thread.

  - The combination of the two aforementioned elements brings variable dimensions, obliges us to determine a density of warp threads and a density of weft threads

  different from those usually used.

Claims (10)

R E V E N D I C A T I ON S   1. A method of manufacturing a terry woven article of the bathroom linen type, characterized in that it consists in combining threads with elastic properties with non-elastic threads so that part of the threads do not elastic form a loop.   2. Method according to claim 1, characterized in that it consists in combining elastic threads with non-elastic threads so that a portion of the elastic threads are inserted among the weft threads if the extensibility is sought in the direction weft and / or inserted among the threads of the bottom warp if stretchability is sought in warp direction and / or the combination of the two if   extensibility is sought in both directions.   3. Method according to claim 1 or 2, characterized in that the son with elastic properties   contain elastane or gum.   4. Method according to claim 2 or 3, characterized in that the proportion of weft son of the bottom is between an insertion during the sponge cycle   and all insertions during the sponge cycle.   5. Method according to claim 2 or 3, characterized in that the number of elastic bottom chain son is between 10 and 80 to 90 per 100 son bottom chain.   6. Method according to one of claims 1 to 5,   characterized in that the weft threads are intertwined substantially perpendicularly to the warp threads   bottom and loop chain wires.   7. Method according to one of claims 1 to 6,   characterized in that the weaving of the weft threads, the bottom warp threads and the loop warp threads is   performed on a sponge weaving machine or loom.   8. Method according to one of claims 1 to 7,   characterized in that a velvet effect is applied, that is to say   say that we cut or shave the head of the loop with a known process.   9. terry-type terry cloth such as bathroom linen as obtained by the process according to one of the claims 1 to 8.   10. terry cloth according to claim 9, characterized in that the extensibility is in the direction   transverse and / or in the longitudinal direction.