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公开(公告)号：CA2631367A1
公开(公告)日：2007-08-02
申请号：CA2631367
申请日：2006-12-21
Applicant: ESSILOR INT
Inventor： YANG HSINJIN , LOCKWOOD MATTHEW JAMES , CHEN XU
IPC: B29D11/00
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公开(公告)号：DE60204595T2
公开(公告)日：2006-03-16
申请号：DE60204595
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN
Abstract: For each lens molding cycle, the method comprises the following steps:raising the wall of the mold cavity to a heating temperature higher than or equal to the molding temperature of said material;filling the molding cavity with said material;at the end of filling, increasing the pressure of said material introduced in this way into the molding cavity up to a compacting pressure; andbringing the wall of the molding cavity to a cooling temperature to cool said molded material down to an unmolding temperature below its molding temperature, said cooling temperature being lower than said unmolding temperature.The molding cavity begins to be filled with said material before the heating temperature has been reached. Once both the compacting pressure of said material and the heating temperature of the molding cavity wall have been reached, they are both maintained for a given length of time.
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公开(公告)号：DE602006016858D1
公开(公告)日：2010-10-21
申请号：DE602006016858
申请日：2006-12-21
Applicant: ESSILOR INT
Inventor： CHEN XU , YANG HSINJIN
IPC: B29D11/00
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公开(公告)号：DE60221280T2
公开(公告)日：2008-04-03
申请号：DE60221280
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN , LOCKWOOD MATTHEW
IPC: B29C51/30 , B29D11/00 , B29C43/02 , B29C43/36 , B29C43/52 , B29C51/08 , B29C51/12 , B29C51/14 , B29C51/32 , B29C51/42 , B29L11/00
Abstract: The mold comprises two dies mounted in a sheath to slide along the axis of the sheath and each presenting a forming face facing the other. The two dies and the sheath are provided with intrinsic heat transfer means. A parison or preform of said thermoplastic material is placed between the two dies and the assembly is enclosed in the sheath; the dies and the sheath are heated by their intrinsic heat transfer means up to a forming temperature; The dies are moved towards each other to shape the material by plastic deformation until a predetermined relative position is reached corresponding to the thickness desired for the lens; the dies and the sheath are cooled by their intrinsic heat transfer means down to an unmolding temperature; and the finished lens is extracted from the mold.
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公开(公告)号：DE60221280D1
公开(公告)日：2007-08-30
申请号：DE60221280
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN , LOCKWOOD MATTHEW
IPC: B29C51/30 , B29D11/00 , B29C43/02 , B29C43/36 , B29C43/52 , B29C51/08 , B29C51/12 , B29C51/14 , B29C51/32 , B29C51/42 , B29L11/00
Abstract: The mold comprises two dies mounted in a sheath to slide along the axis of the sheath and each presenting a forming face facing the other. The two dies and the sheath are provided with intrinsic heat transfer means. A parison or preform of said thermoplastic material is placed between the two dies and the assembly is enclosed in the sheath; the dies and the sheath are heated by their intrinsic heat transfer means up to a forming temperature; The dies are moved towards each other to shape the material by plastic deformation until a predetermined relative position is reached corresponding to the thickness desired for the lens; the dies and the sheath are cooled by their intrinsic heat transfer means down to an unmolding temperature; and the finished lens is extracted from the mold.
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Patent Agency Ranking
公开(公告)号：AT367260T
公开(公告)日：2007-08-15
申请号：AT02804933
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN , LOCKWOOD MATTHEW
IPC: B29C51/30 , B29D11/00 , B29C43/02 , B29C43/36 , B29C43/52 , B29C51/08 , B29C51/12 , B29C51/14 , B29C51/32 , B29C51/42 , B29L11/00
Abstract: The mold comprises two dies mounted in a sheath to slide along the axis of the sheath and each presenting a forming face facing the other. The two dies and the sheath are provided with intrinsic heat transfer means. A parison or preform of said thermoplastic material is placed between the two dies and the assembly is enclosed in the sheath; the dies and the sheath are heated by their intrinsic heat transfer means up to a forming temperature; The dies are moved towards each other to shape the material by plastic deformation until a predetermined relative position is reached corresponding to the thickness desired for the lens; the dies and the sheath are cooled by their intrinsic heat transfer means down to an unmolding temperature; and the finished lens is extracted from the mold.
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公开(公告)号：DE60212706T2
公开(公告)日：2007-06-28
申请号：DE60212706
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN
IPC: B29C45/73 , B29C45/26 , 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.
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公开(公告)号：DE60212706D1
公开(公告)日：2006-08-03
申请号：DE60212706
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN
IPC: B29C45/73 , B29C45/26 , 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.
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公开(公告)号：AT297305T
公开(公告)日：2005-06-15
申请号：AT02804934
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN
Abstract: For each lens molding cycle, the method comprises the following steps:raising the wall of the mold cavity to a heating temperature higher than or equal to the molding temperature of said material;filling the molding cavity with said material;at the end of filling, increasing the pressure of said material introduced in this way into the molding cavity up to a compacting pressure; andbringing the wall of the molding cavity to a cooling temperature to cool said molded material down to an unmolding temperature below its molding temperature, said cooling temperature being lower than said unmolding temperature.The molding cavity begins to be filled with said material before the heating temperature has been reached. Once both the compacting pressure of said material and the heating temperature of the molding cavity wall have been reached, they are both maintained for a given length of time.
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公开(公告)号：AU2002364997A1
公开(公告)日：2003-06-30
申请号：AU2002364997
申请日：2002-12-17
Applicant: ESSILOR INT
Inventor： CHIU HAO-WEN , YANG HSINJIN , LOCKWOOD MATTHEW
IPC: B29C51/30 , B29C43/02 , B29C43/36 , B29C43/52 , B29C51/08 , B29C51/12 , B29C51/14 , B29C51/32 , B29C51/42 , B29D11/00 , B29L11/00
Abstract: The mold comprises two dies mounted in a sheath to slide along the axis of the sheath and each presenting a forming face facing the other. The two dies and the sheath are provided with intrinsic heat transfer means. A parison or preform of said thermoplastic material is placed between the two dies and the assembly is enclosed in the sheath; the dies and the sheath are heated by their intrinsic heat transfer means up to a forming temperature; The dies are moved towards each other to shape the material by plastic deformation until a predetermined relative position is reached corresponding to the thickness desired for the lens; the dies and the sheath are cooled by their intrinsic heat transfer means down to an unmolding temperature; and the finished lens is extracted from the mold.
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