Process for manufacturing products made of a...

B - Operations – Transporting – 29 – C

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B29C 70/52 (2006.01) B29B 15/10 (2006.01) B29C 47/02 (2006.01) B29D 23/00 (2006.01) B32B 27/12 (2006.01)

Patent

CA 2178311

In a process that is particularly suitable for producing pipes or hoses, the reinforcing material and the matrix material are no longer produced separately but together in a woven, knitted, braided or non-woven fabric. The matrix material is selected so that its melting temperature is lower than the melting or decomposition temperature of the reinforcing material. The end product is obtained by pultruding the fabricated material, generally designated as textile fabrics, at a temperature above the melting temperature of the matrix material and below the melting or decomposition temperature of the reinforcing material. The product is then cooled to stabilise its final shape.

Selon ce procédé, qui convient particulièrement pour produire des tubes ou des tuyaux souples, on ne produit plus séparément le matériau de renforcement et le matériau matriciel, mais on les produit ensemble pour former un tissu tissé, tricoté, tressé, à mailles ou non tissé. Le matériau matriciel est sélectionné de sorte que sa température de fusion soit inférieure à la température de fusion ou de décomposition du matériau de renforcement. Le produit fini est obtenu par pultrusion de l'ébauche que l'on appelle aussi généralement "tissu textile" à une température supérieure à la température de fusion du matériau matriciel et inférieure à la température de fusion ou de décomposition du matériau de renforcement, puis la forme du produit fini est stabilisée par refroidissement.

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