DE661374C - Felt and process for its manufacture - Google Patents

Description

Felt and method of making it It is known when making from felting in a similar way as in weaving a part of the wool through man-made staple fibers replace zix. The well-known man-made staple fibers made of cellulose, @vie z. B. obtained by the viscose or copper oxide ammonium process, do not deliver completely satisfactory results in felt production, in which the wool felts have to be carbonized. Hold this cellulose fiber carbonation does not preclude.

The invention consists in that instead of cellulose Artificial spinning fibers mixed with wool are processed into felts made of organic high polymers. It come first Line of staple fibers in question, which are made from Polvvinvlestern according to processes known per se, z. B. polyvinyl chloride, polyvinyl acetate, post-chlorinated polyvinyl chloride, Pofvacrvl.siittreestern, Mischpolyinerisaten the -.-; he body and the like., Are spun.

Compared to the artificial ones previously used for felt production The fibers made from organic fibers used according to the invention have cellulose fibers Hochpolvineren has a significantly lower softening point and a high one Shrinkage capacity when treated with hot liquids, causing tangling of the fibers is favored at the temperatures customary for felt production.

It was surprising that, despite the low softening point, the Synthetic staple fibers made from organic high polymers are common for wool Process stages of felting, WallienS and carbonizing withstood and the fibers retained their structure and therefore a useful mixture with wool for making felts revealed. The fibers made of organic high polymers are very elastic and in water does not swell, so that the felts made from it remain very soft and in water swell only a little.

The proportion of man-made staple fibers in the fiber mixture can be arbitrary to get voted. Very useful mixtures have been found with a proportion of Zo ° / p Artificial spitin fiber. However, the proportion can be increased to 30, 50 or more percent as well as felts exclusively from the named ones Can produce synthetic staple fibers.

The essential properties of pre-Csesclilageile man-made staple fibers are of course different from those of wool. If one wants to achieve uniform fillings of the felt made from synthetic staple fiber, it is expedient to pre-dye both types of fiber or at least one mixing. One can the different Dyeability but also technically very good use to achieve mottled felts. B,; e'1 = ri #: Matting of the synthetic staple fiber with white. '' Full and subsequent over-dyeing with wool dyes results in an evenly mottled felt of excellent quality.

EXAMPLE A mixture of 3200 g of wool mixture consisting of equal parts of wool waste and South African wool and 800 g of synthetic staple fiber made of post-chlorinated polyvinyl chloride is loosened, mixed and melted in the usual way in a card grinder. The finished mixture then passes through a card and is wound onto the fur drum in the usual way. The pile formed on the drum is cut off and divided into equal parts full 33o to 400 g. The weighed quantities are fed to a conical cone perpendicular to the direction of the fibers. The resulting double cones are cut through at the base of the cone and felted on on the plate felting machine. After rolling in dilute sulfuric acid, the felts are carbonized in the usual way and fed to the hammer mill. The wool of the felt is then dyed in the usual way. The fibers made of polyvinyl chloride generally remain undyed. The further processing takes place in the usual manner for hat manufacture.

Claims (3)

PATENT CLAIMS: '"z- @ r. Method for producing felts from a mixture of natural fibers (wool, hair, etc.) with synthetic staple fibers, characterized by the use of synthetic staple fibers made from organic high polymers, in particular polyvinyl esters, polyvinyl chloride, post-chlorinated polyvinyl chloride, Polyacrylic acid esters and the like. 2. The method according to claim i, characterized in that that the man-made staple fiber makes up 2o to 30 ° o of the total amount of fibers. 3. Procedure according to claims i or 2, characterized in that the man-made staple fiber processed in a mixture with white wool and the felt afterwards with wool dyes over-dyed, so that a mottled felt is created. q .. felts from a mixture of natural Fibers (wool, hair or the like) with synthetic staple fibers made of organic high polymers, in particular polyvinyl esters, polyvinyl chloride, polyacrylic acid esters and the like.