Insulating and impervious roofing panels and a process and apparatus for their manufacture

Patent 4695338 Issued on September 22, 1987. Estimated Expiration Date:

September 22, 2004. 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

3922425

Method of weather-proofing surfaces particularly concrete roofs Patent #: 4259127
Issued on: 03/31/1981
Inventor: Schachter

Inventors

Assignee

Isover Saint-Gobain

Application

No. 06/547219 filed on 10/31/1983

US Classes:

156/71, Of lamina to building or installed structure156/250, With cutting, punching, tearing or severing156/289Utilizing parting or release material to prevent adhesion

Examiners

Primary: Bell, James J.

Attorney, Agent or Firm

Oblon, Fisher, Spivak, McClelland & Maier

International Classes

B32B 11/10 (20060101)
B32B 11/00 (20060101)
E04D 3/35 (20060101)

Foreign Application Priority Data

1982-10-29 FR

Abstract

This invention relates to a fibrous panel and to a process and apparatus for its manufacture, the panel includes a dense felt mat (2) of mineral fibres having on at least one of its main surfaces an impervious covering (3, 7) consisting of a reinforcing layer (3) of mineral fibres impregnated with a binder, for example bitumen, and bonded to the felt (2) by the binder, and having, on the external surface, a sheet of separating agent (7) glued to the reinforcing layer (3) by the binder, the agent (7) being self welding in the heat. The panels according to this invention are advantageous for the insulation and weatherproofing of roofs, especially those with only a slight slope, in particular on account of their reliability in use as well as that of the impervious coverings for which they serve as support.