APPARATUS AND METHOD FOR PRODUCING CENTER GATED LENS MOLDS FOR CONTACT LENS MANUFACTURE
摘要
A method and apparatus for the manufacture of lens molds used in the formation of optical contact lenses, the apparatus comprising a center gate aligned on the central axis of the lens mold cavity for delivery of the melt polymer in an axisymmetrical manner. The methodology produces lens molds of extremely precise dimensions as measured against lens molds produced with side gated technology.
申请公布号
CA2196962(A1)
申请公布日期
1997.08.10
申请号
CA19972196962
申请日期
1997.02.06
申请人
JOHNSON & JOHNSON VISION PRODUCTS, INC.
发明人
MATIACIO, THOMAS A.;O'BRIEN, KEITH T.;LUST, VICTOR;ROFFMAN, JEFFREY H.;RENKEMA, KORNELIS;VAN DER MEULEN, WYBREN;PARIDAANS, FRANCISCUS;VAN LIEVENOOGEN, JAN