Patent · US Expired

Process and apparatus for needling a non-woven strip to a revolving endless carrier web

US4962576A · kind A · utility

9Cited by

1References

17Claims

0Family size

Assignee

Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellscaft · AT

Inventors

Klaus Minichshofer · Linz, AT
Peter Muller · Prien am Chiemsee, DE
Hannes Pum · Alberndorf, AT

Key dates

Filing date	Nov 16, 1989
Grant date	Oct 16, 1990
Priority date	—
Expiry date	Nov 16, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2038/008
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

In a process in which a non-woven strip is needled to a revolving endless carrier web, adjacent convolutions of the non-woven strip should exactly adjoin each other. For that purpose each convolution of the non-woven strip is initially needled to the carrier web with the exception of a marginal portion, which constitutes a free longitudinal edge, and that marginal portion is needled after the position and direction of the free longitudinal edge have been detected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.