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Polyester resin container with break part and process for producing the same

A technology of polyester resin and manufacturing method, applied in the direction of soft tubular containers, containers, household containers, etc., can solve the problems of poor heat sealing performance of polyester resin, improve the ease of unsealing, suppress the increase of density, and improve unsealing The effect of ease

Inactive Publication Date: 2011-05-11
DAIWA CAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of adopting polyester resin to manufacture a container with a portion to be ruptured, the polyester resin has poor heat-sealing performance and has cohesiveness. The problem of drawing phenomenon

Method used

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  • Polyester resin container with break part and process for producing the same
  • Polyester resin container with break part and process for producing the same
  • Polyester resin container with break part and process for producing the same

Examples

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Embodiment Construction

[0024] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0025] For the polyester resin container with the portion to be ruptured according to one embodiment of the present invention, figure 1 Indicates its main view; figure 2 represents its side view; image 3 shows its top view.

[0026]A container 10 made of polyester resin with a portion to be ruptured according to an embodiment of the present invention includes: a substantially rectangular flat plate-shaped bottom 12, a substantially square cylindrical cuboid portion 14 continuous with the bottom 12, and a substantially cylindrical mouth. The trunk portion 18 constituted by the neck portion 16 and the mouth portion 20 continuous above the bore portion 16 . Also, a portion to be broken 30 composed of a hollow spherical portion 32 , a plate-shaped grip portion 34 and a thin-walled portion 36 is integrally provided above the mouth portion 20 . The opening end...

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Abstract

A polyester resin container with break part that is improved in opening easiness; and a process for producing the same. There is provided a container with break structure of polyester resin as constituent material, comprising mouth part (20) being continuous from the main body of container and break part (30) integrally disposed superior to the mouth part (20) so that a border portion between opening end (22) of the mouth part (20) and the break part (30) is broken to thereby attain opening, wherein groove (40) is formed in the direction approximately perpendicular to the external surface of the border portion between opening end (22) of themouth part (20) and the break part (30), and wherein the intrinsic viscosity of the polyester resin at the periphery of the groove (40) is set lower than the intrinsic viscosity of the polyester resin at the regions other than the periphery of the groove (40).

Description

technical field [0001] The present invention relates to a polyester resin container with a portion to be ruptured and a method for producing the same, and more particularly to an improvement in the ease of unsealing of a container with a portion to be ruptured using polyester resin as a raw material. Background technique [0002] A twist-off type container having a structure to be broken is disclosed in Japanese Patent Laid-Open No. 2002-321750. The invention disclosed in this gazette is an invention previously filed by the present applicant, and an olefin resin is used as the material of the container. Olefin resin has excellent heat-sealing performance, is easy to twist open or snap-off, and is not easy to leave crack marks, so it is one of the most suitable resin types for manufacturing containers with parts to be ruptured. [0003] On the other hand, Japan formulated a specific health food system in September 1991. Since then, many beverages containing dietary fiber and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D1/02B23K26/00B29C49/04B65D1/00B65D17/32B65D35/44B29C49/42B29L22/00B29K67/00
CPCB29C49/0005B29C49/04B29C49/42B29C2049/4635B29C2793/0054B29C2793/009B29K2067/00B29K2995/0063B65D1/0238B65D1/095B23K26/364B23K2101/12B23K2103/42B23K2103/50B29C49/071B29C49/42802B29C49/42808B29C2049/7831B29C2049/7867B29C2949/3004B65D35/44
Inventor 井上洋一郎山田润二
Owner DAIWA CAN
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