DE1460720A1 - Process to prevent pilling of textile material webs or finished products - Google Patents

Description

Patent attorney Dipl.-Ing. Walter Jackisch 146Q72Q

Stuttgart N, MenzelsttaQ 40

p H 60 720.6 25, Aug. 1969

Hermann stool

Schiltach / Black Forest

Schramberger Strasse A 28 452-Jasz

Process to prevent pilling of textile panels or finished products

Ea numerous methods have become known to avoid the so-called pilling effect, which occurs when Wearing garments made from fully synthetic fibers or continuous fiber yarns results. This annoying Appearance arises from the fact that fiber ends or fiber loops on the surface are caused by friction Knots are twisted together .. It kicks like that The lighter the anchoring of the free fiber ends in the fabric webs.

The known methods relate to special ones Finishing of the finished lengths of fabric, on certain fabric constructions, on special twisting processes of the yarns used and treatment of the fiber and continuous yarns with suitable spin finish agents

The finishing process is carried out in the Wels, that one sohtvt the surface of the goods as bare as possible or scorches in order to remove protruding fiber ends at all

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avoid. This is of course, only for some articles, e.g. fabrics, possible for fashion reasons; or you cook the goods for a long time with suitable ones Chemicals. This process assumes that the synthetic fibers survive this treatment, without losing their specific properties. Also through treatment with glow discharges In a room that can be evacuated, improvements in pilling can be achieved. The Difficult

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the economic exploitation of this

A stronger anchoring of the pasers in woven and knitted fabrics is also due to the stronger shrinkage Achieving textiles, however, a corresponding density of woven or knitted fabrics is already in can usually be achieved through the discontinuation of goods. The goods then become too heavy and too high in the Price. In the case of woven or knitted fabrics made from textured yarns, the characteristic properties were high Volume and elasticity - lost.

This is also true when looking at the nodule formation wants to prevent through the nature of the yarns and threads. Because Hau can do that forces occurring only through pilling counteract high twist of the twisted thread or yarn. In the case of knitted fabrics in particular, a hard, little order flowing goods.

009811/0506

The many processes that have become known for the surface treatment of fibers prior to spinning aim to change the surface of the individual fibers with the aim of to change the smooth surface of the synthetic fibers so that a better hold becomes possible in the fiber structure of the yarn. But they can only work if additional, e.g. through Forces arising from twisting of the yarn cause the fiber surfaces to lie tightly against one another.

So it happens that, for example, fully synthetic crimped yarns, which are heat-set by temporarily turning them up and then turned back, still have a strong tendency to pilling today. Even with all of them other articles for which the known procedures are not used for various reasons the undesirable phenomenon still occurs today.

It has now been found that the known effect can be safely avoided according to the invention in that For example, several fibers are preferably connected to one another at points by means of binding agents. This ver-r Tie can already be in the yarn, it can be in the fabric or on the finished garment.

What is achieved hereby is that the fibers mutually support each other against working out without their fiber surfaces lying close together have to.

009811/0506

U60720

If the treatment is carried out in the yarn, it is possible according to the invention, a tackified in known manner, thread, for example from R _e yon, are twisted with a yarn vollsynthetisohen. Not only is there a connection between the individual synthetic fibers; an additional anchorage results from the connection with the thread core made of rayon. But you can also use a thread core made of an elastomer or melt thread, for example based on polyethylene and / or polypropylene. In this case, there is also the option of canceling the high elongation of the yarns for processing in the case of textured yarns. The finished goods are then subjected to a heat treatment that dissolves the thread structure of the melt thread yarn. This leads to point-like fusions of the fibers of the surrounding fiber yarn. At the same time, the elongation properties of crimped yarns are restored.

In a similar way, according to the invention, water-soluble Fibers e.g. based on polyvinyl alcohol to be worked. A subsequent treatment with water is required to reduce the stickiness to achieve these fibers. The water sensitivity must later be treated in a manner known per se can be remedied with appropriate chemicals.

However, it is also possible to use finished lengths of fabric made of woven or knitted fabrics, or on ready-made fabrics Garments more or less large adhesive

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to spray particles. Here, too, it is achieved that a mutual attachment of the otherwise pilling-forming Fibers are created. The application can be made on the upper or lower side of the goods. When applying on the underside it can be advantageous to apply the binding agent with a roller or a doctor blade, as a result of which E.g. with thicker lengths of material a deeper penetration of the binding agent can be achieved.

In the case of knitted fabrics made from textured yarns, certain appliqué-like reinforcements can be achieved in this way.

A / a binders are preferably transparent plastics, for example based on isoeyanate-modified polyesters, but all other adhesives, such as synthetic latices, etc., in particular elastic binders, are also suitable.

The application quantities vary depending on the type of fabric and application method. It can be assumed that, as a rule, a solids content of the binder of 20 to 4-0 g / sq.m is required.

0098 1Ί / 05 06

Claims (9)

U60720 old: sch 37 315 VIIa / 8b (f August 25, 1969 H. Schemel. A 28 452 - sz claims 1. Procedure for avoiding the pilling effect of textile panels or finished products with fully synthetic fibers by incorporation of binders, characterized in that each individual Pipes within the thread or yarn cross-section with one another or with individual pasers adjacent threads are at least approximately connected at points. 2. The method according to claim 1, characterized in that that for the point-like connection of individual fibers within a thread with one another a melt fiber, e.g. on the basis of polyethylene and / or polypropylene, intended as a thread component and that the melt fiber is distributed by heat treatment to arranged within the thread, several fibers of the thread point-like connecting particles is dissolved. 3. The method according to claim 1, characterized in that that for point-like connection of individual fibers within a thread with one another an adhesive fiber is provided by chemical or physical treatment after spinning or Twisting at the points of contact with the 009811/0506 6AB U60720 - «r- remaining fibers of the thread is made to stick together. 4. The method according to claim 3 »characterized in that that the adhesive fiber consists of thermoplastic material and that the bond is made by heat treatment of the thread or yarn takes place. 5. The method according to claim 3, characterized in that the adhesive fiber is a water-soluble fiber, e.g. on the basis of polyvinyl alcohol, is used and that the bonding with individual neighboring Fibers through an initial aftertreatment with water to establish the adhesiveness, as well as a second, chemical or physical, which removes the water sensitivity of the adhesive fiber Post-treatment is carried out. 6. The method according to claim 1, characterized in that for point-like gluing of individual fibers within a thread or touching fibers of adjacent threads, fine glue particles Sprayed onto a finished web of material with a comparatively large mutual distance will. 7. The method according to claim 1, characterized in that that for approximately point-like gluing of individual fibers within a thread or itself touching fibers of adjacent threads adhesive particles in fine distribution with comparative K60720 - ι - wise large mutual distance can be applied by orphans to a finished sheet of material. 8. The method according to claim 6 or 7 »characterized» that one on the solids content of the adhesive to be applied applied amount of about 20 to 4-0 g / m length of fabric is provided. 9. The method according to one or more of the preceding claims, characterized in »that as binders plastics »preferably transparent plastics based on isocyanates modified polyesters or other adhesives »such as synthetic latices etc.» in particular, however, elastic binders are used will. 0 0 9 811/0506