Mixed articles comprising a rigid part and a based on a thermoplastic material
AssigneeRhodia Engineering Plastics S.r.l.
InventorsDidier Chomier, Marcel On De Laak, Gerhard Potsch
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Abstract
The invention concerns the production of articles comprising at least a rigid element (1) and at least an element (2) made of a thermoplastic material obtained by moulding. The rigid element (1) has a profiled transverse section defining a concave space, wherein is positioned at least partly an element made of thermoplastic material.
Claims24
An article comprising a part comprising a rigid metal or thermoplastic element of elongate shape, at least one part of which has a cross section which has a profile defining a concave space, and comprising at least one part made of thermoplastic material associated with the rigid element and positioned in the concave space of the rigid element, wherein the part made of thermoplastic material is in contact on at least two lines which are continuous in the longitudinal direction, and in that the part made of thermoplastic material has a cross section comprising at least one hollow.
A method for fabricating an article comprising at least one rigid metal or thermoplastic element a cross section of which has at least one part defining a concave space and comprising at least one element made of a molded thermoplastic material, comprising at least the following steps:
- a) arranging, in an injection mold of chosen shape, a preformed rigid metal or thermoplastic element one cross section of which has at least one part defining a concave space,
- b) injecting molten thermoplastic material into the mold, and
- c) injecting a fluid or a gas, through a needle into the molten thermoplastic material present in the concave space of the rigid element.
A method for fabricating an article comprising at least one rigid metal or thermoplastic element a cross section of which has at least one part defining a concave space and comprising at least one element made of a molded thermoplastic material, comprising at least the following steps:
- a) arranging, in an injection mold of chosen shape, a rigid metal or thermoplastic element that is to be preformed,
- b) preforming the rigid element by pressing or by hot forming in the mold, the preform having a cross section which has at least one part defining a concave space,
- c) injecting molten thermoplastic material into the mold, and
- d) injecting a fluid or a gas, through a needle into the molten thermoplastic material present in the concave space of the rigid element.
Dependencies are inferred from the claim text.