B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
B21C 23/24 (2006.01) B32B 1/08 (2006.01) F16L 9/147 (2006.01)
Patent
CA 2640821
An elongated product is formed such that first a core is formed, the outer surface of the core being made of plastic. Thereafter, a tubular metal layer is extruded such that the layer is seamless. When the metal layer is extruded, a clearance (16) is allowed between the metal layer and the core. After the metal layer has cooled, the outer surface of the core is arranged against the inner surface of the metal layer. An adhesive action is arranged between the core and the metal layer and a permanent compressive force is arranged, which compressive force compresses the core and the metal layer together.
L'invention concerne un produit allongé qui est fabriqué de manière qu'en premier lieu, un coeur soit formé, la surface externe du coeur étant en plastique. Une couche métallique tubulaire est extrudée de façon que ladite couche soit sans soudure. Une fois la couche métallique extrudée, un dégagement est admis entre la couche métallique et le coeur. Une fois la couche métallique refroidie, la surface externe du coeur est disposée contre la surface interne de la couche métallique. Une action adhésive est aménagée entre le coeur et la couche métallique, ainsi qu'une force de compression qui comprime ensemble le coeur et la couche métallique.
Freermann Reinhold
Hoving Lars
Jarvenkyla Jyri
Riesselmann Franz-Josef
Winterstein Ralf
Cassan Maclean
Uponor Innovation Ab
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