초록

The tube of the present invention has no or very small local minute nonuniformity in thickness of EVOH layer, and therefore drawn-formed articles such as blow bottle obtained by draw molding the tube have no streaks and are superior in appearance.

대표청구항 ▼

A multilayered tube used for draw molding, which comprises a saturated polyester as the inner and outer layers, a saponified product of ethylene-vinyl acetate copolymer having an ethylene content of 20 to 55 mol% and a saponification degree of vinyl acetate component of at least 96 mol%, and adhesiv

A multilayered tube used for draw molding, which comprises a saturated polyester as the inner and outer layers, a saponified product of ethylene-vinyl acetate copolymer having an ethylene content of 20 to 55 mol% and a saponification degree of vinyl acetate component of at least 96 mol%, and adhesive resin layers interposed between the saturated polyester layers and the saponified product of ethylene-vinyl acetate copolymer layer; which satisfies the conditions of the following formulae I- 1 to I- 3 : 50mE≤1000m1 1-0.01H≤E/E≤1+0.01H I- 2 E/(A+B)≤0.2 I- 3 wherein, E: wall thickness at any spot of the layer of a saponified product of ethylene-vinyl acetate copolymer (mmmmmn and a point Pn+1 which is distant from Pn by Q=100 to 500min circumferential distance on the outer surface of the layer, Emax: the maximum wall thickness in mn and Pn+1.