Process of manufacturing an injected ski
AssigneeSalomon S.A.
InventorsJean-Mary Cazaillon, Bernard Chatellard
Life of this patent
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Abstract
Process of providing on the internal surface of the first and/or second elements of a ski a solid compatibilizer film made of polyurethane or acrylonitrile butadiene styrene or copolyamide. The film forms an interface between foam injected into the internal space of the first and second elements of the ski to promote adherence.
Claims17
A process of manufacturing an injected ski comprising the steps of injection of constituents of a hardenable foam, expanding and hardening the hardenable foam, between at least a first element and a second element, said process comprising a preliminary step during which said first element is formed by the following succeeding steps:
- a) providing a solid polymer base film having good adhesion properties with the hardenable foam during the ultimate injection step;
- b) providing said first element in the form of a substrate whose internal surfaces are formed by a reinforcement, said reinforcement comprising a member selected from the group consisting of:
- (1) a textile reinforcement sheet pre-impregnated with a member selected from the group consisting of:
- thermosetting resin and thermoplastic resin, and (2) a metallic reinforcement;
- c) positioning said solid film on said internal surface of said first element to cover said reinforcement;
- d) hot forming under pressure said solid film and said first element, after said step of positioning said solid film on said internal surface of said first element, to make said film adhere to said first element;
- and
- whereby during said injection step said solid film constitutes a screen between the hardenable foam and the reinforcement and, after injection and hardening said foam adheres perfectly to said film.
A process of manufacturing a ski comprising the steps of:
- a) providing a solid polymer film having good adhesion properties with a hardenable foam;
- b) providing a first element in the form of a substrate having an internal surface formed by a reinforcement, said reinforcement comprising a textile reinforcement sheet pre-impregnated with a thermosetting resin;
- c) positioning said solid polymer film on said internal surface of said first element to cover said reinforcement;
- d) placing said film and said first element in a mold;
- e) closing said mold and hot forming under pressure said film and said first element to make said film adhere to said first element;
- and
- f) injecting said hardenable foam into said mold, whereby said solid film screens the hardenable foam from the reinforcement and said foam, after injection and hardening, adheres securely to said solid film.
A process of manufacturing a ski comprising the steps of:
- a) providing a solid polymer film having good adhesion properties with a hardenable foam;
- b) providing a first element in the form of a substrate having an internal surface formed by a reinforcement, said reinforcement comprising a metallic reinforcement;
- c) positioning said solid polymer film on said internal surface of said first element to cover said reinforcement;
- d) placing said film and said first element in a mold;
- e) closing said mold and hot forming under pressure said film and said first element to make said film adhere to said first element;
- and
- f) injecting said hardenable foam into said mold, whereby said solid film screens the hardenable foam from the reinforcement and said foam, after injection and hardening, adheres securely to said solid film.
Dependencies are inferred from the claim text.