Protective sheet material and method for making same

Details Protective sheet material and method for making same Protective sheet material and method for making same

1995-03-10

1996-07-30

Withers, James

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156155, 156176, 15624411, 156298, 2641761, 26421112, 264248, 264257, 427416, 427443, 428280, 428291, D04H 108, B32B 900, B32B 3100, B28B 320

Patent

active

055409857

ABSTRACT:
A protective sheet material of a laminate structure and a method of manufacture in which the sheet material has a plastic membrane layer joined to a layer of felt. Subsequent to the joining of the felt to the plastic membrane, the felt is saturated with petroleum wax including plasticizers and corrosion inhibitors. A second layer of felt can be joined to the opposite side of the plastic film to provide a sandwich of a plastic membrane between two layers of saturated felt. When this sheet material has been applied in an overlapping manner, there is a felt-to-felt seal at the overlap. The plastic and felt can be joined by heat fusion or by adhesives.

REFERENCES:
patent: 4081414 (1978-03-01), Abe et al.
patent: 4086116 (1978-04-01), Yazaki et al.
patent: 4762750 (1988-08-01), Girgis et al.
patent: 5455111 (1995-10-01), Velasquez Urey

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