US 5,309,613 A · Process and apparatus for improving the handle and surface of textile fabrics and knitted materials

Abstract

The material web (3) to be treated is supplied continuously to a first material web store (1) and stored there in sections, is removed therefrom by being pneumatically conveyed and is hurled compressively against a first impact surface (4). Thereafter, the material (3) compressed in this way is supplied to a second material web store (2) and stored there in sections. Then, the same procedure is carried out in the opposite direction of conveying from the second material web store (3) against a second impact surface (4') and thereafter to the first material web store (1), but with a smaller length advance of the material web, this alternating movement is repeated alternately, and the difference in advance between these length sections of material web moved to and fro is guided away continuously from the second material web store (2).

Claims21

Dependent claims

A process for continuously improving the handle and surface of textile fabrics and knitted materials, said process comprising the steps of:

continuously supplying a material web to a first material web store;
storing said material web in said first material web store in sections;
removing said material web from said first material web store by pneumatic conveying means;
hurling said material web compressively against a first impact surface so as to compress said material web;
supplying said compressed material web to a second material web store and storing said compressed material web in sections therein,
reversing the direction of material web movement so said material web advances from said second material web store against a second impact surface, and thereafter to said first material web store, but with a smaller length of said material web, said material web being hurled at a speed between 400 and 1000 m/min against said first and second impact surfaces;
and
alternating said material web movement between said first and second material web store while continuously guiding away said material web from said second material web store.

5 more elements

An apparatus for continuously improving the handle and surface of textile fabrics and knitted material webs, said apparatus comprising:

two material web stores, each for loosely receiving one section of said material web;
a material web guidance and acceleration channel, said channel being arranged between said material web stores, said channel connecting said material web stores to one another;
two material web impact surfaces, each associated with a respective material web store;
a pneumatic conveying means which is connected to said material web guidance and acceleration channel, for alternately conveying a material web section in mutually opposed longitudinal directions of said guidance and acceleration channel against said respective material web impact surface and from said impact surface into said respectively associated material web store, said pneumatic conveying means associated with said acceleration channel being divided into two pneumatic conveying means groups acting in mutually opposed directions of said acceleration channel, and said two groups being connected to a compressed-air source, alternating separately from one another, by way of a changeover element, said two groups having on either side of said acceleration channel blower nozzles which are arranged alternately laterally offset with respect to one another and directed obliquely with respect to a plane of transport of said material web, and said two groups being arranged in an end region of said acceleration channel, as seen in their respective direction of conveying;
a supply arrangement for continuously supplying said material web to said first material web store;
and
a removal arrangement for continuously guiding away said material web from said second web store.

4 more elements

Dependencies are inferred from the claim text.

Process and apparatus for improving the handle and surface of textile fabrics and knitted materials

Life of this patent

Process and apparatus for improving the handle and surface of textile fabrics and knitted materials

Life of this patent

Abstract

Claims21