Foam laminate foil or web and process for preparing same

Patent 4576860 Issued on March 18, 1986. Estimated Expiration Date:

August 12, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3861994

3911190

Preparation of padded articles Patent #: 4278629
Issued on: 07/14/1981
Inventor: Bennett

Inventors

Assignee

Alkor GmbH Kunststoffe

Application

No. 06/764577 filed on 08/12/1985

US Classes:

428/314.4, Voids specified as closed156/196, With permanent bending or reshaping or surface deformation of self sustaining lamina156/222, Of parallel stacked sheets only264/321, Sponge-like or foamed work428/317.7, Composition of adhesive or bonding component specified428/319.7Linear or thermoplastic

Examiners

Primary: Van Balen, William J.

Attorney, Agent or Firm

Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Evans

International Classes

B32B 25/00 (20060101)
B32B 25/08 (20060101)

Foreign Application Priority Data

1984-08-10 DE

Abstract

A foam laminate foil or web and process therefor. The laminate includes an unfoamed top layer containing an elastomer grafted styrene-acrylonitrile copolymer (ASA), grafted with polyfunctional acrylates and a chlorinated polyethylene (PEC) and/or a rubber-like ethylene-propylene mixed polymer (EPM) and/or a rubber-like terpolymer of ethylene, propylene and a diene, a closed pore polyolefin bottom layer with a bulk density of 30 kg/m3 to 700 kg/m3 which includes an ethylene homo- or copolymer, and an intermediate layer arranged between the bottom layer and the top layer and which acts as a coupling agent. The intermediate layer includes a low pressure polyethylene, an ethylene-vinyl ester copolymer and a rubber-like ethylene-propylene mixed polymer (EPM) and/or a rubber-like terpolymer of ethylene, propylene and a diene (EPDM).