B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 15/08 (2006.01)
Patent
CA 2487386
A resin-coated steel pipe (1) excellent in mechanical strength such as sliding property, wherein a double coating structure is formed in a manner that it extends in the pipe axis direction and has substantially the same cross section, the structure comprising a thin steel pipe (2) and, attached to the outer surface thereof as a coating layer with an adhesive, an alloy resin (3) being a mixture of a styrenic resin and a crystalline engineering plastic and further, formed on the outer surface of the alloy resin (3) in a thickness required for exhibiting its mechanical strength such as sliding property, the crystalline engineering plastic (4). The resin-coated steel pipe exhibits markedly improved adhesion of the crystalline engineering plastic (4) to the thin steel pipe (2) and thus is free from a fear of the exfoliation of the plastic.
L'invention porte sur un tube mince d'acier (1) enrobé d'une résine à forte résistance mécanique et faible capacité de glissement. L'enrobage présente une structure mixte formant des cannelures longitudinales de section constante. Le tube d'acier (2) est tout d'abord revêtu d'une couche de résine styrénique (3) fixée à sa surface extérieure par un adhésif, puis d'une couche de plastique cristallin (4) usiné, de l'épaisseur requise pour présenter la résistance mécanique et la faible capacité de glissement souhaitées. Le tube enrobé présente ainsi une adhérence notablement améliorée du plastique cristallin (4) usiné à sa surface, qui élimine les risques d'exfoliation du plastique.
Marks & Clerk
Yazaki Industrial Chemical Co. Ltd.
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