Method of making water impervious materials

Details Method of making water impervious materials Method of making water impervious materials

1986-03-03

1987-09-22

Czaja, Donald E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156283, 1563082, 156324, 1563244, 428286, B32B 2700, D04H 104

Patent

active

046953345

ABSTRACT:
A water impervious laminated material is described. A preferred embodiment comprises a three-layer plastic film sandwiched between and fuse bonded to two layers of conjugate fibers having a low melting sheath and a high melting core. The inner layer of the plastic film is relatively high melting while the two outer plies of the film are low melting. The sheaths of the conjugate fibers have been fuse bonded to the plastic film at a temperature below the melt temperature of the cores of the conjugate fibers so that the cores retain their initial fiber-like integrity.

REFERENCES:
patent: 3589956 (1971-06-01), Kranz
patent: 3695967 (1972-10-01), Ross
patent: 4508113 (1985-04-01), Malaney
patent: 4555811 (1985-12-01), Shimalla

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