Method for making close tolerance laminates

Details Method for making close tolerance laminates Method for making close tolerance laminates

1979-07-17

1981-02-10

Goolkasian, John T.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156323, 156581, 1565833, B32B 3100, B65C 925, B30B 502, B30B 504

Patent

active

042499771

ABSTRACT:
A method of making close tolerance laminates comprises the steps of positioning in an open stack a plurality of B-staged epoxy resin saturated fibrous sheets and providing the top and bottom of each stack with a contour pad, the stack-facing side of which is adapted to provide a horizontal pressure gradient ranging from higher at the center to lower at the edges, and consolidating the stack under heat and pressure. In contrast to conventional processes which produce laminates which are eliptical in shape (thicker in the center), the new process produces laminates having little or no center-to-edge variation.

REFERENCES:
patent: 2490111 (1949-12-01), Whitehead
patent: 3400018 (1968-09-01), Morgan et al.

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