Patent · US Active

Nonwoven/film laminates

US7947147B2 · kind B2 · utility

13Cited by

14References

7Claims

0Family size

Assignee

RKW SE · DE

Inventors

Ludwig Börmann · Babensham, DE
Günter Schreiner · Emden, DE

Key dates

Filing date	Aug 17, 2005
Grant date	May 24, 2011
Priority date	—
Expiry date	Oct 24, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/678
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a method for producing nonwoven/film laminates for personal hygiene articles, from an initial film web consisting of a thermoplastic polymer and an initial nonwoven web. According to said method, the initial film web and the initial nonwoven web, whose melting point lies above the crystallite melting point of the polymer, are heated to a temperature that exceeds the crystallite melting point of the polymer and lies below the melting point of the initial nonwoven web. The laminate is then guided through a cooled nip and is cooled to a temperature that lies below the crystallite melting point of the initial film web. The invention also relates to laminates that can be produced by said method.

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