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公开(公告)号：FR2850443A1
公开(公告)日：2004-07-30
申请号：FR0300800
申请日：2003-01-24
Applicant: ESSILOR INT
Inventor： HUARD MARC
Abstract: The needle valve consists of a body (25) with a flow channel (30) for a liquid organic plastic material having a tapered section (34) with an angle of 30 - 60 degrees forming a seat for the needle (40). The needle valve consists of a body (25) with a flow channel (30) for a liquid organic plastic material having a tapered section (34) with an angle of 30 - 60 degrees forming a seat for the needle (40). The needle has a shoulder (43) that interacts with the seat for the valve's closed position, and a tip (42) of variable section that provides for a variable flow between open and closed positions. The shoulder and needle tip have blunt surfaces, with the tip having a spherical end and at least one conical section. The valve also has a polymer seal (44) between the body and needle.
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公开(公告)号：FR2792243B1
公开(公告)日：2001-06-29
申请号：FR9904579
申请日：1999-04-13
Applicant: ESSILOR INT
Inventor： HUARD MARC , BESSIERE BENOIT , MASSAU JOEL
Abstract: An injection valve includes an injection channel ( 17 ) that opens outwards via an outlet ( 18 ) and has a specific inlet for the arrival of the molding material ( 19 A) remote from the outlet ( 18 ), in addition to a slider unit ( 20 ) that is moveably mounted in the injection channel ( 17 ) and controls the outlet thereof ( 18 ). The injection channel ( 17 ) has a specific outlet ( 19 B) for discharging the molding material. The invention can be used to mold an optical lens made from a polymerizable synthetic material.
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公开(公告)号：DE602006002204D1
公开(公告)日：2008-09-25
申请号：DE602006002204
申请日：2006-09-01
Applicant: ESSILOR INT
Inventor： FELTEN YOHANN , HUARD MARC
Abstract: The apparatus, comprising two shells forming a moulding cavity, and a closer with a wall (123) of a synthetic material making contact with the two shells and made with an inlet channel (125) for the moulding material. The closer has a joint (40) of an elastomer material forming the contact wall, and the inlet channel is made in a rigid insert (43) that is at least partly over-moulded by the elastomer material. The outlet aperture (126) of the channel is in the shape of a buttonhole as it tapers from one end to the other, and the overmoulding includes a lining of constant thickness.
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公开(公告)号：FR2890592B1
公开(公告)日：2007-11-30
申请号：FR0509338
申请日：2005-09-13
Applicant: ESSILOR INT
Inventor： FELTEN YOHANN , HUARD MARC
Abstract: The apparatus, comprising two shells forming a moulding cavity, and a closer with a wall (123) of a synthetic material making contact with the two shells and made with an inlet channel (125) for the moulding material. The closer has a joint (40) of an elastomer material forming the contact wall, and the inlet channel is made in a rigid insert (43) that is at least partly over-moulded by the elastomer material. The outlet aperture (126) of the channel is in the shape of a buttonhole as it tapers from one end to the other, and the overmoulding includes a lining of constant thickness.
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公开(公告)号：ES2206215T3
公开(公告)日：2004-05-16
申请号：ES00918946
申请日：2000-04-11
Applicant: ESSILOR INT
Inventor： HUARD MARC , BESSIERE BENOIT , MASSAU JOEL
Abstract: An injection valve includes an injection channel ( 17 ) that opens outwards via an outlet ( 18 ) and has a specific inlet for the arrival of the molding material ( 19 A) remote from the outlet ( 18 ), in addition to a slider unit ( 20 ) that is moveably mounted in the injection channel ( 17 ) and controls the outlet thereof ( 18 ). The injection channel ( 17 ) has a specific outlet ( 19 B) for discharging the molding material. The invention can be used to mold an optical lens made from a polymerizable synthetic material.
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Patent Agency Ranking
公开(公告)号：FR2850443B1
公开(公告)日：2005-03-04
申请号：FR0300800
申请日：2003-01-24
Applicant: ESSILOR INT
Inventor： HUARD MARC
Abstract: The needle valve consists of a body (25) with a flow channel (30) for a liquid organic plastic material having a tapered section (34) with an angle of 30 - 60 degrees forming a seat for the needle (40). The needle valve consists of a body (25) with a flow channel (30) for a liquid organic plastic material having a tapered section (34) with an angle of 30 - 60 degrees forming a seat for the needle (40). The needle has a shoulder (43) that interacts with the seat for the valve's closed position, and a tip (42) of variable section that provides for a variable flow between open and closed positions. The shoulder and needle tip have blunt surfaces, with the tip having a spherical end and at least one conical section. The valve also has a polymer seal (44) between the body and needle.
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公开(公告)号：FR2850319B1
公开(公告)日：2005-03-04
申请号：FR0300802
申请日：2003-01-24
Applicant: ESSILOR INT
Inventor： HUARD MARC , DA SILVA GRACIO , DARMES DANIEL
Abstract: The procedure consists of a staged flow, starting from zero with an initial flow (A) and leading to a nominal flow rate (Dn) of over 40 grams per minute (g/min) which is maintained for a period (B) during which the mold is filled, and a final reduced flow (C) coming back to zero. The initial flow stage (A) has two phases: a first phase (A1) in which the mold is filled to a depth of of at least 2 mm, and preferably up to 7 mm, in its deepest part at a flow rate of under 20 g/min, followed by a second phase (A2) in which the flow rate is increased to nominal (Dn). The first phase itself is divided into two sections: a first section (A11) building up from zero to a first flow rate (Dd) of some 3 - 8 g/min, and a second section (A12) in which the first flow rate is maintained for a period of 4 - 10 seconds. The mold cavity is filled through a needle valve and an orifice in its base, and the polymerization of the molded material is initiated immediately after the cavity is filled.
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公开(公告)号：DE60005166D1
公开(公告)日：2003-10-16
申请号：DE60005166
申请日：2000-04-11
Applicant: ESSILOR INT
Inventor： HUARD MARC , BESSIERE BENOIT , MASSAU JOEL
Abstract: An injection valve includes an injection channel ( 17 ) that opens outwards via an outlet ( 18 ) and has a specific inlet for the arrival of the molding material ( 19 A) remote from the outlet ( 18 ), in addition to a slider unit ( 20 ) that is moveably mounted in the injection channel ( 17 ) and controls the outlet thereof ( 18 ). The injection channel ( 17 ) has a specific outlet ( 19 B) for discharging the molding material. The invention can be used to mold an optical lens made from a polymerizable synthetic material.
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公开(公告)号：DE602004005084T2
公开(公告)日：2007-12-13
申请号：DE602004005084
申请日：2004-01-16
Applicant: ESSILOR INT
Inventor： HUARD MARC
Abstract: The needle valve consists of a body (25) with a flow channel (30) for a liquid organic plastic material having a tapered section (34) with an angle of 30 - 60 degrees forming a seat for the needle (40). The needle valve consists of a body (25) with a flow channel (30) for a liquid organic plastic material having a tapered section (34) with an angle of 30 - 60 degrees forming a seat for the needle (40). The needle has a shoulder (43) that interacts with the seat for the valve's closed position, and a tip (42) of variable section that provides for a variable flow between open and closed positions. The shoulder and needle tip have blunt surfaces, with the tip having a spherical end and at least one conical section. The valve also has a polymer seal (44) between the body and needle.
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公开(公告)号：FR2850319A1
公开(公告)日：2004-07-30
申请号：FR0300802
申请日：2003-01-24
Applicant: ESSILOR INT
Inventor： HUARD MARC , DA SILVA GRACIO , DARMES DANIEL
Abstract: The procedure consists of a staged flow, starting from zero with an initial flow (A) and leading to a nominal flow rate (Dn) of over 40 grams per minute (g/min) which is maintained for a period (B) during which the mold is filled, and a final reduced flow (C) coming back to zero. The initial flow stage (A) has two phases: a first phase (A1) in which the mold is filled to a depth of of at least 2 mm, and preferably up to 7 mm, in its deepest part at a flow rate of under 20 g/min, followed by a second phase (A2) in which the flow rate is increased to nominal (Dn). The first phase itself is divided into two sections: a first section (A11) building up from zero to a first flow rate (Dd) of some 3 - 8 g/min, and a second section (A12) in which the first flow rate is maintained for a period of 4 - 10 seconds. The mold cavity is filled through a needle valve and an orifice in its base, and the polymerization of the molded material is initiated immediately after the cavity is filled.
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