Dimensionally stable PVC roof membrane

Details Dimensionally stable PVC roof membrane Dimensionally stable PVC roof membrane

1980-12-18

1982-11-09

Ives, P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428520, 428522, 428907, 427411, 264255, 264DIG60, 156246, B32B 2708, B44D 144

Patent

active

043584993

ABSTRACT:
A PVC roofing membrane cast from a plastisol has less than 1.5% shrinkage when held at 176.degree. F. (80.degree. C.) for six hours and remains flexible at -60.degree. F. (-51.degree. C.). The low shrinkage reduces tensions in the roofing membrane, simplifying the application of the membrane to a roof, and reducing stresses caused by dimensional changes at high service temperatures.

REFERENCES:
patent: 3224894 (1965-12-01), Palmer
patent: 3252851 (1966-05-01), Benson
patent: 3297461 (1967-01-01), Siddall
patent: 3429732 (1969-02-01), Baitinger, Jr.
patent: 3547772 (1970-12-01), Schnebelen et al.

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