Direct casting method for producing low-stress glass/plastic com

Details Direct casting method for producing low-stress glass/plastic com Direct casting method for producing low-stress glass/plastic com

1979-04-05

1980-10-14

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 99, 156102, 156106, 156242, 264 1, 264299, 350178, 350320, 351166, B29D 1100, B32B 3106

Patent

active

042279500

ABSTRACT:
A glass-plastic composite lens combining a glass element with a high-shrinkage thermosetting plastic is provided in accordance with a direct casting process comprising a consolidation heating step, subsequent to plastic curing and shrinkage, during which a thermoplastic coating between the glass element and the cured plastic bonds the assembly into a unitary low-stress composite.

REFERENCES:
patent: 2047253 (1936-07-01), Brooks
patent: 2976197 (1961-03-01), Cox
patent: 3135645 (1964-06-01), Berkley et al.
patent: 3987449 (1976-10-01), DeAngelis et al.
IBM Technical Disclosure Bulletin "Reducing the Shrinkage of Resins During Curing", vol. 12, No. 4.

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