Apparatus for applying a surfactant to mold surfaces

Details Apparatus for applying a surfactant to mold surfaces Apparatus for applying a surfactant to mold surfaces

1994-06-10

1996-08-06

Edwards, Laura

Coating apparatus

Solid applicator contacting work

Movably mounted applicator

118263, 118264, 118268, 425 98, 425808, B05C 100

Patent

active

055429785

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.

REFERENCES:
patent: 4064208 (1977-12-01), Hanning
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.

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