Method for producing a laminated material

Details Method for producing a laminated material Method for producing a laminated material

1988-09-13

1991-01-22

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624423, 1563077, 264 459, 4283197, 521 94, B32B 518

Patent

active

049868608

ABSTRACT:
A method for producing a laminated material including a lower layer of highly-expanded plasticized polyvinyl chloride with cross-linking and a surface layer of thermoplastic resin sheet laminated on an upper surface of said lower layer, said method including the steps of: heating and kneading raw materials for the lower layer in an extruder, the raw materials excluding a cross-linking agent and a blowing agent; adding the cross-linking agent and the blowing agent; heating and kneading the obtained material at or less than a reacting temperature of the cross-linking agent and a decomposition temperature of the blowing agent to obtain a sheet; heating the sheet to cross-link and expand the sheet to form the lower layer of cross-linked highly-expanded plasticized polyvinyl chloride; and laminating the surface layer of the thermoplastic resin on the upper surface of the lower layer. The polyvinyl chloride resin is (A) a polyvinyl chloride resin having reacting groups in its molecules, or (B) a mixture of a polyvinyl chloride resin having no reacting groups in its molecules and a thermoplastic resin having reacting groups in its molecules.

REFERENCES:
patent: 4028449 (1977-06-01), Kakitani et al.
patent: 4781976 (1988-11-01), Fujita et al.
Kobunshi, vol. 12, No. 136, p. 514, published Jun. 20, 1963.

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