Process for preparation of water-proof sheets

Details Process for preparation of water-proof sheets Process for preparation of water-proof sheets

1985-10-01

1987-07-07

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427294, 427296, 427412, 427421, 4274432, B05D 306

Patent

active

046786813

ABSTRACT:
Disclosed is a process for preparing a water-proof sheet by forming a polymer coating on both the surfaces of a fibrous substrate fabric. At first, the fibrous substrate fabric is treated with a water repellant, and both the surfaces are subjected to the low temperature plasma treatment or corona discharge treatment. Then, a polymer coating is formed on both the surfaces. According to this process, the peel strength of the polymer coating is improved and the water absorbing property is reduced substantially to zero. If an inorganic fiber substrate fabric is treated according to this process, the bending resistance is highly improved in the resulting water-proof sheet.

REFERENCES:
patent: 3023126 (1962-02-01), Underwood et al.
patent: 3669709 (1972-06-01), Kasugai et al.
"Plasma Treatment of Textiles-Potential Applications and Future Prospects", Melli and Textilberichte, Apr. 1982, pp. 307-313.

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