Method for finishing glass-plastic laminated lens blanks

Details Method for finishing glass-plastic laminated lens blanks Method for finishing glass-plastic laminated lens blanks

1979-05-07

1981-09-01

Massie, Jerome W.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

65 31, 65 61, 65111, 156663, C03C 1500, C03C 1900

Patent

active

042870186

ABSTRACT:
A method and apparatus for edge-grinding stressed laminated glass-plastic lens blanks wherein the lens blanks are heated during the abrasive edging process to reduce thermal stress breakage. The edged lenses are optionally etched to remove glass flaws, thus providing laminated lenses exhibiting improved resistance to thermal stress breakage in use.

REFERENCES:
patent: 3580789 (1968-07-01), Wenzel
patent: 3753840 (1973-08-01), Plumat
patent: 3843472 (1974-10-01), Toussrint et al.
patent: 3912902 (1975-10-01), Herniter
patent: 3981709 (1976-09-01), Kondo et al.
Morey, G. The Properties of Glass, Reunhald Publishing Corp., New York N.Y. (1938) pp. 173-197.
Holland, L. The Properties of Glass Surfaces, John Niley & Sons Inc., New York, N.Y. (1964) pp. 17-21.
Stevens et al., Ed. Introduction to Glass Science, Plenum Press, New York, N.Y. (1972) pp. 457-465.

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