公开(公告)号：JPH07276389A

公开(公告)日：1995-10-24

申请号：JP5388695

申请日：1995-03-14

Applicant: ESSILOR INT

Inventor： JIYAN POORU KAANOO ,  JIYAN FURANSOWA MAANIYU ,  JIYORUJIYU BUAISU

IPC: G02C7/04 ,  B29C33/00 ,  B29C39/02 ,  B29C39/26 ,  B29C39/32 ,  B29C39/38 ,  B29C65/68 ,  B29D11/00 ,  B29L11/00

Abstract: PURPOSE: To induce the cross-sectional contraction of a closure sleeve by selecting a heat-shrinkable synthetic material to heat the same in a mold for an optical lens of a type wherein the closure sleeve constituting a molding cavity required along with shells is fitted around two molding shells in an annular form. CONSTITUTION: A heat-shrinkable synthetic material of polyester like polyvinyl chloride is formed into a strip-like article 16 on the sections 13A, 13B of molding shells 10A, 10B to be wound to form a closure sleeve 14 and two end portions of this sleeve are locally welded. High temp. air is blown by using a plurality of nozzles turned toward a sub-assembly 17 in a radial direction to heat the subassembly 17. After this heating work cross-sectional contraction can be induced in the closure sleeve 14 according to cooling.

公开(公告)号：JPH06136276A

公开(公告)日：1994-05-17

申请号：JP4998892

申请日：1992-03-06

Applicant: ESSILOR INT

Inventor： REANIRITSUTO IEEAN ,  JIYORUJIYU BUAISU ,  JIERAARU MARUTAN ,  PATORITSUKU GIYUEREERO

IPC: C08L101/00 ,  B29D11/00 ,  G02B1/04 ,  G02B3/00 ,  G02C7/02