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Synthetic resin container with high barrier capability

A technology for synthetic resins and containers, applied in the field of containers, can solve problems such as being unable to be effectively used

Inactive Publication Date: 2008-08-27
YOSHINO KOGYOSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As in the above-mentioned conventional container, if the barrier properties of the two aspects are not considered, but only one of them is focused on, and the ratio between the elements of the organosilicon compound is specified, although the water vapor barrier property can be improved, the other On the one hand, the purpose of improving the gas barrier property that was originally achieved sometimes cannot be effectively exerted

Method used

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  • Synthetic resin container with high barrier capability
  • Synthetic resin container with high barrier capability
  • Synthetic resin container with high barrier capability

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Embodiment Construction

[0019] Hereinafter, the present invention will be described in detail with reference to the drawings.

[0020] Fig. 1 shows the first embodiment of the present invention, which is represented by a bottle made of polyethylene terephthalate (hereinafter referred to as [PET bottle]) formed by biaxial stretch blow molding (blow) The enlarged cross-sectional view of the main part of the container, the number 1 is the wall that constitutes the container body, and the number 2 is the inner surface of the wall 1 that is used to prevent the gas (oxygen and carbon dioxide, etc.) from penetrating into the container or outside the container. ) and a high barrier coating for water vapor.

[0021] The coating film 2 is a barrier film made of silicon oxide disposed adjacent to the wall portion 1 . The barrier film 2 is composed of a compound formed of at least silicon (Si), carbon (C), hydrogen (H), and oxygen (O).

[0022] The barrier film 2 is formed by plasma chemical vapor deposition u...

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Abstract

A synthetic resin container that has attained an enhancement of steam barrier capability while retaining a high gas barrier capability against oxygen, etc. through simple and easy means. There is provided a PET bottle obtained by forming, on an internal surface of wall portion (1) of PET resin constructing the main body of the container, barrier coating (2) containing a silicon oxide wherein among silicon, oxygen and carbon composition ratios (atom%), the oxygen composition ratio is 50 atom% or higher while the carbon composition ratio is in the range of 3 to 20 atom% in accordance with plasma CVD technique using an organic silicon compound gas and oxygen gas as raw materials. Preferably, the carbon composition ratio of the barrier coating (2) is 8 atom% or below.

Description

technical field [0001] The present invention relates to a synthetic resin container in which a barrier film with high barrier properties is formed on at least one side of the inner surface and the outer surface of the container body, and in particular relates to a container which ensures high gas barrier properties such as oxygen And it is a container for the purpose of improving the water vapor barrier. Background technique [0002] With the popularization of synthetic resin containers represented by polyethylene terephthalate (PET) bottles, so-called PET bottles, the scope of use has also expanded to soft drinks, wine, oil, etc. , soy sauce, etc. However, since synthetic resins such as PET generally have the property of permeating gases such as oxygen and carbon dioxide, from the perspective of maintaining the quality of the contents, a silicon oxide-containing layer with high barrier properties will be formed on the container body. (SiOx) compound coating. [0003] How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D23/02B65D23/08B32B9/00C23C16/42B32B1/00
CPCC23C16/401Y10T428/1379C23C16/30C23C16/045B65D23/02B65D23/08B32B9/00C23C16/42
Inventor 高田诚稻叶淳一铃木正人
Owner YOSHINO KOGYOSHO CO LTD
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