초록

An article of polyethylene terephthalate resin, particularly a laminated wall structure of a bottle made by biaxial orientation blow molding from the resin. The laminated wall is made up of polyethylene terephthalate resin and a synthetic resin material having good gas barrier properties.

대표청구항 ▼

A multilayer biaxially oriented synthetic resin bottle comprised of distinct layers produced by blow molding a parison comprised of a main layer of polyethylene terephthalate rein and a barrier layer of a synthetic resin material which is substantially impermeable to oxygen, said barrier layer havin

A multilayer biaxially oriented synthetic resin bottle comprised of distinct layers produced by blow molding a parison comprised of a main layer of polyethylene terephthalate rein and a barrier layer of a synthetic resin material which is substantially impermeable to oxygen, said barrier layer having a thickness t3 and being laminated to the outside of said main layer, a ratio of said barrier layer thickness t3 to a thickness of the entire wall being approximately equal to Tv, calculated according to the equation: [Figure] where F is a ratio of the gas barrier ratio of the entire wall to that of a similarly-dimensioned wall of polyethylene terephthalate along; and A is a gas permeability of said barrier layer divided by that of polyethylene terephthalate.