Coating processes – Mold coating
Patent
1995-05-01
1998-11-17
Bell, Janyce
Coating processes
Mold coating
427135, 427384, 118256, 118263, 118264, 118268, 264 90, 264338, B05C 100, B05D 302
Patent
active
058373144
ABSTRACT:
A method of and apparatus for employing a surfactant which is provided in order to assist in the release from each other of mold components of a multi-part mold employed in the molding of polymeric articles; for instance, such as a hydrophilic contact lens, upon completion of the molding process for the polymeric articles. The surfactant is applied in the form of a film or coating on surface portions of one of the mold components in order to facilitate the disengagement between the mold components during demolding, and the removal of excess polymeric molding material adhesively deposited on surfaces thereon.
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patent: 4159292 (1979-06-01), Neefe
patent: 4640489 (1987-02-01), Larsen
patent: 4680336 (1987-07-01), Larsen et al.
patent: 5039459 (1991-08-01), Kindt-Larsen et al.
patent: 5264161 (1993-11-01), Druskis et al.
Patent Abstracts of Japan, vol. 94, No. 010, & JP-A-06 285831 (Kao Corp), Oct. 11, 1994 (abstract).
Patent Abstracts of Japan, vol. 017, No. 038 (M-1358), 25/1/93 & JP-A-04 258366 (Akizo Sato), (abstract) Sep. 14, 1992.
Beaton Stephen Robert
Duncan Gregory Scott
Kindt-Larsen Ture
Martin Wallace Anthony
Walker Craig William
Bell Janyce
Johnson & Johnson Vision Products Inc.
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