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Liquid Blow Molding System

A blow molding, liquid technology, used in other household appliances, household appliances, household components, etc., can solve problems such as liquid leakage and mouth deformation

Active Publication Date: 2021-12-24
YOSHINO KOGYOSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the conventional liquid blow molding apparatus disclosed in Patent Document 1, there is a problem that since the sealing surface is formed in a tapered shape with the inner side slightly lower than the outer side in the radial direction or a flat surface perpendicular to the axial direction, Therefore, during liquid blow molding, since the pressurized liquid supplied to the inside of the preform exerts a force in the diameter-expanding direction on the mouth portion, deformation in the diameter-expanding direction may occur at the mouth portion, Liquid leaks from between nozzle and mouth

Method used

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  • Liquid Blow Molding System
  • Liquid Blow Molding System
  • Liquid Blow Molding System

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Embodiment Construction

[0050] Hereinafter, the present invention will be illustrated and described more specifically with reference to the drawings.

[0051] figure 1 , figure 2 The preform 1 shown as one embodiment of the present invention is obtained by using for example image 3 The liquid blow molding apparatus 10 shown as one embodiment of the present invention is liquid blow molded so as to be blow molded into a liquid-filled container of a predetermined shape.

[0052] The preform 1 is a synthetic resin material formed of a synthetic resin material such as polypropylene (PP) and / or polyethylene terephthalate (PET), polyethylene (PE), which exhibits ductility by heating. The preform made of resin is molded by means of injection molding, compression molding, extrusion molding, etc. of the synthetic resin material, so that it is formed into a substantially test tube shape including the mouth part 2, the main body part 3 and the neck support part 4. .

[0053] The mouth part 2 is a part that...

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Abstract

The liquid blow molding device (10) is configured such that a sealing surface (17c) is provided at the lower end of a cylindrical nozzle (17), and when the nozzle (17) is inserted into the mouth (2), the sealing surface is The nozzle (17) and the inner peripheral surface of the preform (1) are sealed in axial contact with the step surface (5) provided on the inner peripheral surface of the preform (1). In addition, the preform (1) is configured to include, on its inner peripheral surface, a stepped surface (5) on which the sealing surface (17c) of the nozzle (17) is to abut in the axial direction. The stepped surface (5) is formed into a tapered shape in which the radially inner side is positioned higher than the radially outer side.

Description

technical field [0001] The present invention relates to a liquid blow molding system for blow molding a synthetic resin preform into a liquid-filled container of a predetermined shape. Background technique [0002] Containers made of synthetic resin represented by bottles made of polypropylene (PP) and / or bottles made of polyethylene terephthalate (PET) are used for beverages, cosmetics, medicines, and detergents and detergents. It is used to store various liquids such as hair spray and other toiletry products as the content liquid. Such a container is usually manufactured by blow molding a preform formed of a thermoplastic synthetic resin material as described above to have a cylindrical mouth and a mouth connected to the mouth. It is made in the shape of a cylindrical main body with a bottom. [0003] On the other hand, as a blow molding device for blow molding a preform, there is known a liquid blow molding device which supplies pressurized air into the inside of a pref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/46B29C49/06
CPCB29C49/06B29C49/46B29C49/42B29C2049/4294B29K2023/12B29K2067/003B29L2031/7158B29C2049/4664B29C49/58B29C2049/023B29C2949/0715B29C49/28B29C49/02
Inventor 塩川满奥山雄一
Owner YOSHINO KOGYOSHO CO LTD