Patent · US Active

Method for perforating nonwoven fabric

US8088316B2 · kind B2 · utility

28Cited by

5References

16Claims

0Family size

Assignee

Fiberweb Corovin GmbH · DE

Inventors

Mathias Muth · Wiesbaden, DE
Indra Roy · Bremgarten, CH
Ralf Sodemann · Peine, DE

Key dates

Filing date	Feb 5, 2007
Grant date	Jan 3, 2012
Priority date	—
Expiry date	Sep 7, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/666
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to the perforation of nonwovens with a perforating roll and an opposing roll. The perforating roll and opposing roll form a gap, through which a nonwoven being perforated, is guided and perforated. The perforation apparatus comprises a feed device and a withdrawal device. The feed device is arranged such that the nonwoven being perforated advances first onto the opposing roll, before it enters the gap. The withdrawal device is arranged such that after leaving the gap, the perforated nonwoven remains on the perforating roll. Furthermore, a perforation method and a corresponding nonwoven structure are provided.

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