Mold liners for resin transfer molding

Details Mold liners for resin transfer molding Mold liners for resin transfer molding

1992-06-25

1993-07-13

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 156285, 264257, 264269, 2643281, B29C 4302

Patent

active

052269973

ABSTRACT:
A preform assembly for use with a resin transfer molding apparatus. The preform comprises an upper liner formed to the shape of a first mold half, the upper liner having a peripheral portion, a dry fabric preform, and a lower liner formed to the shape of a second mold half, the lower liner having a peripheral portion. The preform is sandwiched between the upper liner and lower liner to form the preform assembly having peripheral portions which extend beyond the preform to form a sealing area. The upper liner is sealed to the lower liner at the sealing area. The preform assembly facilitates the loading of the preform into a molding apparatus as well as facilitating the handling and storage of the preform prior to and subsequent to molding. Methods of making the preform assembly, as well as a composite article, are also disclosed

REFERENCES:
patent: 2456093 (1948-12-01), Swedlow
patent: 2613397 (1952-10-01), Borkland
patent: 4030953 (1977-06-01), Rutschow et al.

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