Faced foam insulation board and froth-foaming method for making same

USRE36674E · kind E · reissue

Assignee

• Celotex Corporation · US

Inventors

• David G. Gluck · St. Petersburg, US
• Alberto DeLeon · Kingwood, US
• John P. Oliver · Memphis, US

Key dates

• Filing date: May 18, 1989
• Grant date: Apr 25, 2000
• Expiry date: May 18, 2009

Classification

• Technology area (CPC —): General

Abstract

A method for continuously producing an insulation board comprising a rigid plastic foam core having two major surfaces and a facing material on one or both of the major surfaces, the method including conveying a facing material along a production line, depositing a partially expanded froth foam of a plastic mixture, which contains at least one frothing agent, on the facing material, and further expanding and curing the froth foam in contact wiht the facing material to form the insulation board. The board is particularly useful as roof insulation.