Patent · US Active

Method for producing a film web

US8163216B2 · kind B2 · utility

7Cited by

2References

15Claims

0Family size

Assignee

RKW SE · DE

Inventors

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

Key dates

Filing date	Apr 26, 2006
Grant date	Apr 24, 2012
Priority date	—
Expiry date	Jun 10, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/249921
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for producing a film web during which an initial film web made of thermoplastic polymer material with a polyethylene matrix, in which 1 to 70 parts by weight of polypropylene, with regard to 100 parts by weight of polyethylene matrix, are contained, is, after being heated, guided through a cooled roll gap (7, 8), whereby the initial film web is heated only until the polymer matrix material melts but not to a temperature at which the polypropylene melts.

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