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Dual-structure container with inner bag container having excellent regular contractility

A container and inner bag technology, which is applied in the field of double-structured containers, can solve problems such as difficulty in discharging the content liquid, and achieve the effects of stable discharge, favorable manufacturing cost, and avoidance of clogging

Active Publication Date: 2020-11-20
TOYO SEIKAN GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Therefore, the object of the present invention is to provide a double structure container, which is used to effectively solve the problem that the discharge of the content liquid becomes difficult due to the discharge of the content liquid. problem, and this effect can be obtained by controlling the shrinkage of the inner bag container

Method used

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  • Dual-structure container with inner bag container having excellent regular contractility
  • Dual-structure container with inner bag container having excellent regular contractility
  • Dual-structure container with inner bag container having excellent regular contractility

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0113] The excellent effects of the present invention will be described with reference to the following experimental examples.

[0114] A commercially available PET resin for bottles (intrinsic viscosity: 0.84 dl / g) sufficiently dried in a dehumidifying dryer was supplied to a hopper of an injection molding machine to obtain a preform for molding a test tube-shaped outer container and for molding A preform of a test tube-shaped inner bag container. A plurality of shrinkage control grooves are axially symmetrically formed on the inner surface of the inner bag container preform. The shape and number of slots are shown in Table 1.

[0115] [Table 1]

[0116]

[0117] The inner bag container preform is inserted into the outer container preform to obtain a stacked preform. The stacked preforms were heated by using a quartz heater and a heating iron core, and then blow molded to obtain a cylindrical bottle with an internal volume of about 400 ml. For the outer preform, the st...

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Abstract

The present invention provides a dual-structure container in which contractility of an inner bag container is regulated and which effectively solves the problem that ejection of a content liquid becomes difficult as the content liquid is ejected. The present invention provides a dual-structure container which comprises an inner bag container 31 and an outer container 41 and which is obtained by simultaneous stretch blow molding according to a stack preform method using an inner bag container preform 1 and an outer container preform 3, the dual-structure container being characterized in that abarrel part 33 of the inner bag container 31 has contractility-regulating thin parts 50 extending in a band shape in an axial direction at a plurality of locations at intervals in a circumferential direction.

Description

technical field [0001] The present invention relates to a dual-structure container comprising an outer container and an inner bag container inserted and held in the outer container. More particularly, the present invention relates to a bag-in-container preform for producing a dual-structure container by simultaneous stretch blow molding according to a stacked preform method and a dual-structure container obtained by using the same. Background technique [0002] A dual-structure container having a dual structure consisting of an inner bag container and an outer container has actually been used as, for example, an airless bottle to accommodate seasoning liquids such as soy sauce. Airless bottles can be used in combination with caps that have check valves. The content liquid filled in the inner bag container is discharged through the outlet formed in the cap by squeezing the bottle as the outer container from the outside in such a manner that the body wall is dented. When the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/06B29C49/22B65D1/02
CPCB29C49/06B29L2009/001B29B11/14B29K2067/003B29L2031/7158B29C49/08B65D83/0055B65D23/02B65D81/24B29C2949/3034B29C2949/3086B29C2949/0744B29C2949/074B29C2949/3032B29C49/071B29C2949/0715B29C2949/3094B29C48/06B65D1/0215B29C49/22B29L2031/712B65D1/40
Inventor 阿久泽典男市川健太郎饭野裕喜
Owner TOYO SEIKAN GRP HLDG LTD
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