Patent · US Expired

Sealed foam web

US3967028A · kind A · utility

4Cited by

7References

8Claims

0Family size

Assignee

BEIERSDORF AG · DE

Inventors

Heinz Muller · Erlangen, DE
Bodo Szonn · Kisdorf, DE
Peter Jauchen · Hamburg, DE
Rolf Schulze · Leinfelden, DE

Key dates

Filing date	Dec 12, 1974
Grant date	Jun 29, 1976
Priority date	—
Expiry date	Dec 12, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31594
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A web of polymeric foam which is sealed on one or both sides by a thin, hard plastic layer is disclosed. The sealed web is prepared by coating an auxiliary substrate with a film of hard plastic-forming resin, laminating this film to a polymeric foam web by means of a curable adhesive applied to the hard plastic, and removing the auxiliary substrate.

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