Patents Assigned to COEXPAIR
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Patent number: 11305471Abstract: Resin supply system in which resin material is stored in a pouch in a degassed state ready for use. The pouch comprises a body portion forming a reservoir for resin material and a connector portion in fluid communication therewith. The connector portion includes an outlet which is configured to be connected to an injector head of an injector assembly, the injector head being connectable to a mould by means of connecting tubing to provide a resin supply thereto. The pouch is configured to be mountable in a housing of the injector assembly and is compressed by hydrostatic pressure of water surrounding the pouch in a chamber of the housing. The application of pressure by a piston moving in a direction transfers pressure to the water and then to the pouch in a controlled manner to provide the resin supply to the mould. After use, the pouch is removed and discarded thereby substantially eliminating the need for cleaning of the housing after use.Type: GrantFiled: November 19, 2018Date of Patent: April 19, 2022Assignee: COEXPAIR S.A.Inventor: André Bertin
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Patent number: 9545783Abstract: Described herein is an apparatus and a method for removing an epoxy resin from a backing sheet at a temperature at or below the glass transition temperature of the epoxy resin. The apparatus (200) comprises a housing (210) in which is mounted a dispensing roll (220) comprising epoxy resin (230) on a backing sheet (240), a wind-up roll (250) comprising the backing sheet (240), a release element (260) over which the backing sheet (240) is directed, and a collection tray (270) for collecting pieces of resin (230a) removed from the backing sheet (240). The dispensing and wind-up rolls (220, 250) are mounted on respective drive shafts (225, 255) which are driven by a drive mechanism (285) controlled by a controller (280). A temperature controller (290) is also provided for controlling the temperature within the housing (210) so that it remains below or at the glass transition temperature of the epoxy resin.Type: GrantFiled: October 3, 2012Date of Patent: January 17, 2017Assignee: COEXPAIRInventors: Marc Gillard, Andre Bertin
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Patent number: 9302433Abstract: The invention concerns a method of molding a part (1?) made from composite material. This method comprises a step of injecting a liquid (7) under pressure into a closed mold (2) containing a fibrous pre-form (1) previously impregnated with resin. Said liquid (7) comes into contact with the resin but it is substantially inert and immiscible with respect thereto. The invention also concerns an apparatus for carrying out this method.Type: GrantFiled: April 15, 2011Date of Patent: April 5, 2016Assignee: COEXPAIRInventors: Veronique Carlier, Andre Bertin, Mikhael Vandeuren
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Publication number: 20150258766Abstract: Described herein is an apparatus and a method for removing an epoxy resin from a backing sheet at a temperature at or below the glass transition temperature of the epoxy resin. The apparatus (200) comprises a housing (210) in which is mounted a dispensing roll (220) comprising epoxy resin (230) on a backing sheet (240), a wind-up roll (250) comprising the backing sheet (240), a release element (260) over which the backing sheet (240) is directed, and a collection tray (270) for collecting pieces of resin (230a) removed from the backing sheet (240). The dispensing and wind-up rolls (220, 250) are mounted on respective drive shafts (225, 255) which are driven by a drive mechanism (285) controlled by a controller (280). A temperature controller (290) is also provided for controlling the temperature within the housing (210) so that it remains below or at the glass transition temperature of the epoxy resin.Type: ApplicationFiled: October 3, 2012Publication date: September 17, 2015Applicant: COEXPAIRInventors: Marc Gillard, Andre Bertin
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Publication number: 20130234353Abstract: The invention concerns a method of moulding a part (1?) made from composite material. This method comprises a step of injecting a liquid (7) under pressure into a closed mould (2) containing a fibrous pre-form (1) previously impregnated with resin. Said liquid (7) comes into contact with the resin but it is substantially inert and immiscible with respect thereto. The invention also concerns an apparatus for carrying out this method.Type: ApplicationFiled: April 15, 2011Publication date: September 12, 2013Applicant: COEXPAIRInventors: Veronique Carlier, Andre Bertin, Mikhael Vandeuren