FIELD: technological processes.
SUBSTANCE: tubular moulded article according to the first aspect is a tubular moulded article having a layered structure comprising at least a first resin layer, a second resin layer and a third resin layer in which the first resin layer contains an acid-modified aromatic polyamide, and the second resin layer is located on the outside of the first resin layer. Tubular moulded article according to the second aspect is a tubular moulded article having a layered structure comprising at least a first resin layer, a second resin layer and a third resin layer in which the first resin layer contains an aromatic polyamide, and the second resin layer contains an acid-modified resin.
EFFECT: tubular moulded article is disclosed.
49 cl, 9 dwg, 1 tbl
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