Production of breathing composite sheet

Details Production of breathing composite sheet Production of breathing composite sheet

1990-04-27

1992-02-18

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156252, 156510, 29132, 29DIG47, B32B 3100

Patent

active

050890751

ABSTRACT:
Breathing composite sheet can be produced from a thermoplastic resin and a porous substrate, such as a non-woven fabric sheet, by extrusion-laminating technique using a specified cooling roll, the surface of which has been at least partly modified with a covering material having specified ranges of thermal conductivity and hardness properties. The extruded molten thermoplastic film carried on the porous substrate is effectively perforated at the modified surface of the cooling roll so as to give a breathing composite sheet.

REFERENCES:
patent: 3095315 (1963-06-01), Magill, Jr. et al.
patent: 3161554 (1964-12-01), Blackford
patent: 3686731 (1972-08-01), Koovi et al.
patent: 3893795 (1975-07-01), Nauta
patent: 4652326 (1987-03-01), Spielau et al.
patent: 4995930 (1991-02-01), Merz et al.
Japanese Patent Public Disclosure No. 58-163657; Sep. 28, 1983.
Japanese Patent Public Disclosure No. 61-241137; Oct. 27, 1986.

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