Lens blank surface protection film

Details Lens blank surface protection film Lens blank surface protection film

1995-11-17

2000-11-21

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156243, 4272084, 428343, 451 42, B32B 3100

Patent

active

061497509

ABSTRACT:
A conformable tape for bonding a lens block to ophthalmic lens blanks is provided. The tape comprises a polymeric backing and a pressure-sensitive adhesive. In a first preferred embodiment the surface of the backing is a blend of an olefin polymer with a polymer having acidic functionality. The blend may be formed as the backing layer, i.e., directly on the adhesive layer of the tape, or as the outer surface layer of a multilayered backing. In a second embodiment, the surface of the backing is a copolymer of an olefin monomer with a monomer having pendant acidic functionality. A lens block may be adhered to an ophthalmic lens blank by applying a section of the tape described above to an ophthalmic lens so that the pressure sensitive adhesive of the tape contacts the lens; conforming the tape to the compound surface of the lens; and attaching a lens block to at least a portion of the polymer backing layer. The tape may be made by extruding a polymeric backing material as described above; extruding a pressure-sensitive adhesive; and contacting the polymeric backing material and the pressure-sensitive adhesive. If desired, the polymeric backing material and the pressure sensitive adhesive may be coextruded to form the tape. In most preferred embodiments, the tape may be wound into a roll without a separate liner material.

REFERENCES:
patent: Re24906 (1960-12-01), Ulrich
patent: 3410928 (1968-11-01), Baum
patent: 3786116 (1974-01-01), Milkovich et al.
patent: 4174358 (1979-11-01), Epstein
patent: 4287013 (1981-09-01), Ronning
patent: 4636427 (1987-01-01), Ohno et al.
patent: 4678836 (1987-07-01), McKinney et al.
patent: 4737559 (1988-04-01), Kellen et al.
patent: 4769283 (1988-09-01), Sipinen et al.
patent: 4833179 (1989-05-01), Young et al.
patent: 4847137 (1989-07-01), Kellen et al.
patent: 4942696 (1990-07-01), Winthrop et al.
patent: 4952650 (1990-08-01), Young et al.
patent: 5066231 (1991-11-01), Oxman et al.
patent: 5096969 (1992-03-01), Payne et al.
patent: 5264219 (1993-11-01), Godbey et al.
patent: 5286781 (1994-02-01), Gotoh et al.
patent: 5326413 (1994-07-01), Esemplare et al.
patent: 5343657 (1994-09-01), Ohlin
Patent Abstracts of Japan vol. 16, No. 431, May, 20, 1992.
Textbook of Polymer Science, Fred W. Billmeyer, Jr., Wiley-Interscience, pp. 84-85, 1971.

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