DE441526C - Textile finishing process - Google Patents

Description

(H ₉₇ S43

The textile finishing with Küpferoxydammoniak is already carried out in the way, that first the surface of the plant fibers or substances made from them by Be-S treatment with copper oxide ammonia is partially dissolved and gelatinized, whereupon the Fibers or fabrics are mercerized in a known manner after removal of the copper.

According to the new finishing process, the textile is treated with a solution of cellulose in copper oxide ammonia and the precipitated cellulose is permanently fixed on the fibers, which is achieved by an excess of copper in the cellulose solution. The thus-treated cloth is subjected ₌ acid either before or after the removal of copper or a single mercerization instead of treatment.

The new method is also characterized in that to achieve permanent Some treatments without any tension or with crimping or creping effects

S5 regulated voltage can be carried out.

The one obtained according to the invention by a single mercerization or acid treatment Transparent or silk gloss effect is more important than just looking at the fibers or substances gelatinized by means of copper oxide ammonia or the like and then repeated mercerized.

The fabric to be finished can, if necessary, be washed out, bleached, stained or colored or an appropriate one before the application of the cellulose solution To be subjected to treatment. White or colored protective stains can also be used in Apply to the effect of the pulp solution and / or the mercerizing Restricting means, mordant or dye to certain parts of the fabric.

The pulp solution can be applied to the fabric by padding, printing or stenciling or in any other suitable manner.

When preparing the cellulose solution in ammoniacal copper oxide, cotton can be used or any other pulp may be used, the copper oxide being recovered by any suitable method will. The solution can be fully or only partially saturated with pulp. With partially saturated solution gives better effects. Depending on the degree of saturation the solution, and hence the amount of free copper in it, will vary greatly in its effects achieved. At certain degrees of saturation, e.g. 1% to 2 percent pulp in a solution of ammoniacal copper oxide containing about 30 g of copper per 1000 ecm Solution contains, it has sufficient

Copper, in order not only to achieve an intimate connection between the pulp and the woven fabric and to permanently fix the pulp deposit, but also to show through or permanent contraction or shrinkage of the pulp solution treated Fabric parts to effect if the subsequent mercerisation with or without Tension takes place. On the other hand, with ίο higher degrees of saturation, for example approximately 4 percent pulp, the amount of copper present to make the "intimate" bond or cause the pulp skin and woven fabric to come together; the cellulose skin creates a high-gloss, silk-like, non-translucent effect. The pulp skin may develop during one or more of the successive treatments contract, this creates lasting, high-gloss crimping or creping effects evoked. With increasing thickness of the cellulose skin applied to the goods the effects decrease.

The following examples are intended to illustrate the practical implementation of the invention in more detail:

Cotton or cotton-containing stuff, which may have been pretreated in the above-mentioned manner, is _{padded with a 1 ^ 2 to 2} percent solution of cellulose (bleached cotton) in ammoniacal copper oxide. The goods are then, preferably without drying, treated in an acid bath, preferably with hydrochloric acid of about 2 ° part , further washed and mercerized with caustic soda with or without tension; then washed again, acidified, passed through the cloth press and then dried. Alternatively, the goods can only be acidified once after they have been mercerised. In any case, the "grip" of the goods changes over time. It becomes crepe-like, and the goods themselves become more translucent. If the cellulose solution is applied by printing, stenciling or the like instead of padding, or if protective stains are used, the result is a completely translucent pattern which gives the goods the appearance of brocade or damask. If the mercerization of the goods after the application of the pulp solution is carried out without tension, typical, permanent crimping or creping effects are produced.

According to another embodiment of the invention, a solution of cellulose is used in ammoniacal copper oxide of greater concentration than that previously indicated Example used. In this case, a solution of approximately 4 percent pulp is expediently used. With Cellulose gelatine applied to the goods with such a solution has a silk-like sheen, which even after the final valid drying is still adhering. The pulp solution is preferably applied to the goods and these without drying with caustic soda solution of about the ordinary mercerizing starch treated with or without tension; then the goods are washed, acidified and finally washed as well as dried. Are some or all of the work carried out under voltage * then those parts of the goods that have been treated with the pulp solution have led are, a permanently high-gloss, silk-like finish that one by natural or artificial silk. Will the mercerization of the goods after treatment with pulp solution carried out without tension and / or the final drying of the goods also without tension or with carefully more regulated effects, e.g. B. with greater tension in the weft than in the warp direction, so the cellulose skin on the goods pulls together with the result that high-gloss, silk-like, permanent crimps or Creping effects are caused.

Stains, dyes, pigments, mica or metal powder or other suitable ones Substances can be added to the pulp solutions and thus bound to the goods.

The W e ^af can after the specified treatment dried, printed or otherwise treated, and it can thus Schattierungsund other effects are obtained.

When using mercerization, the effects described can be combined with caustic Soda or other mercerising solutions of less strength than those normally used in mercerising, be achieved.

Sometimes the mercerization of the goods can be replaced after the pulp solution has been used by treating the goods with acid, preferably with sulfuric or hydrochloric acid, and expediently of greater strength than are usually customary in that Acid bath is used.

The new process works in the same way on cotton or cotton-containing yarns Can be used to create permanent transparent effects.

Claims (1)

Patent claims: i. Textile finishing process using copper oxide ammonia, characterized in that the substance Treated with a solution of cellulose in copper ι for example hydrochloric or sulfuric acid, eroxydammoniak and then before ι follows. or after the removal of the copper i 3. The method according to claim 1, thereby subjecting to a one-time mercerization! marked that will remain to achieve. | 2. Method according to claim 1, characterized in that ^: treatment processes without any clasp denotes that a treatment with acids is added instead of mercing or with regulated tension. BERLIN. PRINTED IN THE HEIOH PRINTED.