Process for producing laminated bituminous roofing membrane

Details Process for producing laminated bituminous roofing membrane Process for producing laminated bituminous roofing membrane

1975-05-08

1977-10-25

Van Horn, Charles E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156289, 156310, 156324, 156337, 427186, 428 40, 428 41, 428142, 428144, 428291, B32B 710, C09J 330, C09J 504

Patent

active

040554538

ABSTRACT:
A novel self-adhesive type multi-layer laminated bituminous roofing membrane suitable for the formation of the roofing or waterproofing layer on roofs, floors and the like is provided. It comprises a base sheet of a sheet-like material, one or more bitumen layers coated on all or part of one or both faces of the base sheet, at least one layer of compound bitumen including both bitumen and rubber and/or resin laminated on all or part of the surface of said bitumen-coated layer on the base sheet and at least one release sheet laid over the whole surface of said compound bitumen layer.
This roofing membrane is produced by uniting the bitumen-coated base sheet and the compound bitumen-coated release sheet, and can be applied over a substrate in a simple manner, without the step of melting or liquefying bitumen as in the conventional application process.

REFERENCES:
patent: 318910 (1885-05-01), Jowitt
patent: 2472100 (1949-06-01), Fair, Jr.
patent: 3111787 (1963-11-01), Chamberlain
patent: 3294611 (1966-12-01), Vomela
patent: 3532586 (1970-10-01), Haurey et al.
patent: 3788941 (1974-01-01), Kupits
patent: 3813280 (1974-05-01), Olszyk et al.
patent: 3929545 (1975-12-01), Van Dyck et al.

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