Modified hot runner systems for injection blow molding

A technology of injection blow molding and hot runner, which is applied in the fields of thermoplastic preforms, manufacturing of said containers, and manufacturing of said preforms, which can solve the problems of loss of mechanical strength of heat-set containers and achieve high heat resistance and gas resistance The effect of permeability mechanical strength

Active Publication Date: 2010-06-16
KEIRYO PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the resulting heat-set container lo

Method used

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  • Modified hot runner systems for injection blow molding
  • Modified hot runner systems for injection blow molding
  • Modified hot runner systems for injection blow molding

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Embodiment approach

[0029]According to a first embodiment of the invention, the present invention relates to a method for manufacturing articles in general, or more specifically, preforms, and the resulting stretched polymers that provide equal or higher end performance characteristics from crystallizable polymers. Method of blow molding containers. The method includes modifying the hot runner system to induce new structures at the preform and / or container level.

[0030] Another embodiment of the present invention provides a method and apparatus for the cost-effective manufacture of these items in general, injection molded preforms and stretch blow molded containers in particular.

Summary of the invention

[0031] The present invention describes a method for the manufacture of preforms and containers made of crystallizable polymers, in particular preforms and containers of the stretch blow molded container type, and more particularly, the present invention describes A method for manufacturing...

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Abstract

An injection blow molding method for making a container comprising the steps of injecting a molten crystallizable polymer in a preform mold via a hot runner system and biaxially stretching the preform by blowing, thereby forming a container, characterized in that said method further comprises means to selectively modify the flow path of the molten crystallizable polymer within the hot runner system.

Description

field of invention [0001] The present invention relates generally to new developments in thermoplastic preforms, in particular of the type used for blow molding containers, and more particularly relates to ) preforms. The invention also relates to a method for manufacturing said container, and in particular to a preform for the manufacture of said container, and to a method for manufacturing said preform. Background of the invention [0002] In beverage packaging, the use of plastic containers as an alternative to glass or metal containers has become increasingly popular. Several types of plastics have been used, ranging from aliphatic and aromatic polyolefins (polyethylene, polypropylene, polystyrene) to halogenated polymers (polyvinyl chloride, polyvinylidene chloride) and aliphatic polyamides (nylons) to aromatic polyesters. For the rigid food packaging segment, polyethylene terephthalate (PET), an aromatic polyester, is by far the most widely used resin. This choice ...

Claims

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Application Information

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IPC IPC(8): B29C45/30B29C45/28
CPCB29K2067/043B29L2031/7158B29K2105/005B29C49/6427B29B2911/1414B29B2911/14106B29B2911/1402B29B2911/14066B29K2105/0032B29C49/06B29C45/2806B29K2067/046B29C45/30B29B2911/14053B29B2911/14093B29B2911/14133B29K2667/043B29B2911/1408B29B2911/1404B29B2911/14113B29B2911/14033B29C49/221B29K2105/0044B29B2911/14026B29K2105/16B29C49/02B29C49/08B29K2067/003B29C2949/3016B29C2949/302B29C2949/26B29C2949/28B29C2949/24B29C2949/3008B29C2949/22B29C2949/3012B29C2949/3024B29C2949/3026B29C2949/3032B29C2949/3034B29C2049/023B29C2049/7862B29C2049/78645B29C49/087B29C2049/7879B29C45/28
Inventor 史蒂文·迪尔希克斯
Owner KEIRYO PACKAGING
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