Synthetic resin container excellent in functional characteristics and prodn. method therefor

Abstract

A synthetic resin container excellent in heat resistance and high in gas barrier property, and a production method thereof. The container is produced by having a gas barrier material blended into a base phase and subjecting the blended substance to at least two biaxial stretching blow molding processes with heat treating processes in between.

Description

technical field [0001] The present invention relates to a synthetic resin container and a manufacturing method thereof, in particular to a synthetic resin container capable of suppressing the deterioration of contents caused by permeation of oxygen or carbon dioxide through the container, and having high heat resistance, and a manufacturing method thereof. Background technique [0002] Synthetic resin containers represented by PET bottles are light in weight and easy to carry, and because they can ensure transparency, they are not inferior to glass containers in terms of appearance, and It is also relatively cheap in cost, and has been widely used in containers for food, beverages, cosmetics, and pharmaceuticals in recent years. [0003] However, since the body of the container made of synthetic resin cannot avoid the penetration of oxygen or carbon dioxide, its disadvantage is that the time the contents can be kept, that is, the so-called "shelf life" is longer than that of...

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Problems solved by technology

[0003] However, since the body of the container made of synthetic resin cannot avoid the penetration of oxygen or carbon dioxide, its disadvantage is that the time the contents can be kept, that is, the so-called "shelf life" is longer than that of glass containers. short

[0004] Moreover, the heat-resistant strength of this kind of container is also low, and the container made of polyethylene terephthalate resin (PET) is 85-87 ℃ as its upper limit, especially when filling the liquid exceeding the upper limit temperature in the container, It will be difficult to avoid the deformation of the container due to heat shrinkage, so there is a limit to the expansion of the application range

[0005] This shows that above-mentioned existing synthetic resin container still has inconvenience and defect, and demands urgently further improving

In order to solve the problems of synthetic resin containers, relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure for general products to solve the above problems. This is obviously a problem that relevant industry players are eager to solve

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