公开(公告)号：AT337157T

公开(公告)日：2006-09-15

申请号：AT02742927

申请日：2002-04-30

Applicant: ESSILOR INT

Inventor： CHIU HAO-WEN ,  YANG HSINJIN EDWIN

IPC: B29C33/38 ,  B29C45/37 ,  B29L11/00

Abstract: Disclosed is an injection molding method. The method comprises injecting a melt of thermoplastic material at a temperature higher than the glass transition temperature (Tg) of the thermoplastic material in a molding cavity defined by a two-piece mold insert. The article is recovered after cooling and disassembling of the two piece mold insert. Each of the two pieces of the mold insert comprise at least one portion partly defining the mold cavity which is made of a material or combination of materials, other than glass, the thermal diffusivity alpha of which fulfills the condition: 1

公开(公告)号：AT436034T

公开(公告)日：2009-07-15

申请号：AT05290903

申请日：2005-04-28

Applicant: ESSILOR INT

Inventor： YANG HSINJIN EDWIN ,  CHIU HAO WEN

IPC: G02B1/04 ,  C08G64/14 ,  C08L69/00

Abstract: Methods are disclosed which utilize polycarbonate to form solid optical lenses. The polycarbonates may be selected from high molecular weight linear or branched species. Viscosity and melt flow are specified for improved mechanical properties. The method provides lenses with greater resistance to cracking and crazing, for example, in instances where flaws are subject to strain and require containment.

公开(公告)号：AU2157301A

公开(公告)日：2001-05-30

申请号：AU2157301

申请日：2000-11-10

Applicant: ESSILOR INT

Inventor： LABREC BRIAN C ,  YANG HSINJIN EDWIN

IPC: C08K5/103

公开(公告)号：BRPI0611349A2

公开(公告)日：2011-01-04

申请号：BRPI0611349

申请日：2006-06-07

Applicant: ESSILOR INT

Inventor： MAYR ROGER A ,  CHIU HAO WEN ,  YANG HSINJIN EDWIN

IPC: B29D11/00 ,  B29C45/56

Abstract: Methods are disclosed to injection mold resins, like polycarbonate, to form solid optical lenses. The lenses are ideally suited for use as very thin coating carriers. The method involves closing the mold with a clamp force less than the force exerted on the insert during injection. During injection the mold is allowed to breathe thereby overcoming many of the obstacles associated with injection molding very thin lenses. As the injection pressure subsides, the mold begins to close to perform a coining operation, resulting in a strong, high yield carrier or lens.

公开(公告)号：DE602005015274D1

公开(公告)日：2009-08-20

申请号：DE602005015274

申请日：2005-04-28

Applicant: ESSILOR INT

Inventor： YANG HSINJIN EDWIN ,  CHIU HAO WEN

IPC: G02B1/04 ,  C08G64/14 ,  C08L69/00

Abstract: Methods are disclosed which utilize polycarbonate to form solid optical lenses. The polycarbonates may be selected from high molecular weight linear or branched species. Viscosity and melt flow are specified for improved mechanical properties. The method provides lenses with greater resistance to cracking and crazing, for example, in instances where flaws are subject to strain and require containment.

公开(公告)号：BR0209304A

公开(公告)日：2004-06-15

申请号：BR0209304

申请日：2002-04-30

Applicant: ESSILOR INT

Inventor： CHIU HAO-WEN ,  YANG HSINJIN EDWIN

IPC: B29C33/38 ,  B29C45/37 ,  B29L11/00

Abstract: Disclosed is an injection molding method. The method comprises injecting a melt of thermoplastic material at a temperature higher than the glass transition temperature (Tg) of the thermoplastic material in a molding cavity defined by a two-piece mold insert. The article is recovered after cooling and disassembling of the two piece mold insert. Each of the two pieces of the mold insert comprise at least one portion partly defining the mold cavity which is made of a material or combination of materials, other than glass, the thermal diffusivity alpha of which fulfills the condition: 1

公开(公告)号：AU2002364845A1

公开(公告)日：2003-06-30

申请号：AU2002364845

申请日：2002-12-17

Applicant: ESSILOR INT

Inventor： CHIU HAO-WEN ,  YANG HSINJIN EDWIN

IPC: B29C45/26 ,  B29C45/73 ,  B29D11/00 ,  B29K101/12 ,  B29L11/00

Abstract: A mold half-block possesses at least one mold recess defined transversely by the working face of a shell provided with heat-transfer parts that are intrinsic and both-way (both heating and cooling), the shell including a base that receives all of the heat-transfer parts and a removable insert fitted on the base and carrying the working face, the insert having no intrinsic heat-transfer parts and being thermally regulated solely by heat transfer with the base. The insert is in the form of a cap which fits over at least a head portion of the base, and the heat-transfer parts of the base are allocated to the head portion of the base having the insert fitted thereover.