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Synthetic resin container excellent in functional characteristics and prodn. method therefor

A technology of synthetic resin and manufacturing method, which is applied to containers, rigid containers, and other household appliances. It can solve problems such as short storage time, difficulty in avoiding container deformation, and product without structure, so as to achieve extremely low residual stress and improve air quality. The effect of barrier property and prolongation of commodity storage time

Inactive Publication Date: 2007-11-07
YOSHINO KOGYOSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the body of the container made of synthetic resin cannot avoid the penetration of oxygen or carbon dioxide, its disadvantage is that the time the contents can be kept, that is, the so-called "shelf life" is longer than that of glass containers. short
[0004] Moreover, the heat-resistant strength of this kind of container is also low, and the container made of polyethylene terephthalate resin (PET) is 85-87 ℃ as its upper limit, especially when filling the liquid exceeding the upper limit temperature in the container, It will be difficult to avoid the deformation of the container due to heat shrinkage, so there is a limit to the expansion of the application range
[0005] This shows that above-mentioned existing synthetic resin container still has inconvenience and defect, and demands urgently further improving
In order to solve the problems of synthetic resin containers, relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure for general products to solve the above problems. This is obviously a problem that relevant industry players are eager to solve

Method used

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  • Synthetic resin container excellent in functional characteristics and prodn. method therefor
  • Synthetic resin container excellent in functional characteristics and prodn. method therefor
  • Synthetic resin container excellent in functional characteristics and prodn. method therefor

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Experimental program
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Embodiment

[0050] Please refer to FIG. 5A to FIG. 5C , which are individual schematic views of the side, plane and bottom of the synthetic resin container used in the embodiment. When the heat-resistant corner bottle (350ml, 500ml) shown in the figure is produced, and the premolded body using PET monomer is blown once (single blowout), the same as when the PET resin is mixed with a barrier material and the premolded body is used. The body was subjected to two blow molding (double blowout) and heat treatment process for comparison. Please refer to Table 1 and Table 2 for the investigation results of the oxygen transmission rate, ratio (oxygen transmission ratio) and shelf life of individual blow molding containers.

[0051] Forming conditions for single blowing:

[0052] - Mold temperature (body): 110°C

[0053] -Blowout pressure: 3.92MPa

[0054] - Extension speed: 42cm / s

[0055] Molding conditions for double blowing

[0056] -The first biaxial stretch blow molding

[0057] - Mold...

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Abstract

A synthetic resin container excellent in heat resistance and high in gas barrier property, and a production method thereof. The container is produced by having a gas barrier material blended into a base phase and subjecting the blended substance to at least two biaxial stretching blow molding processes with heat treating processes in between.

Description

technical field [0001] The present invention relates to a synthetic resin container and a manufacturing method thereof, in particular to a synthetic resin container capable of suppressing the deterioration of contents caused by permeation of oxygen or carbon dioxide through the container, and having high heat resistance, and a manufacturing method thereof. Background technique [0002] Synthetic resin containers represented by PET bottles are light in weight and easy to carry, and because they can ensure transparency, they are not inferior to glass containers in terms of appearance, and It is also relatively cheap in cost, and has been widely used in containers for food, beverages, cosmetics, and pharmaceuticals in recent years. [0003] However, since the body of the container made of synthetic resin cannot avoid the penetration of oxygen or carbon dioxide, its disadvantage is that the time the contents can be kept, that is, the so-called "shelf life" is longer than that of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/18B29C49/22B65D1/00B29C49/00B29C49/04B29C49/06B29C49/64B65D1/02B65D65/40C08L67/02C08L77/00
CPCB29C49/649B29B2911/14053C08L77/00B29B2911/1412B29L2031/7158B29B2911/1416C08L67/02B29B2911/14106B29B2911/1444B29B11/14B29B2911/14113B29C49/16B29C49/0005B65D1/0207B29C49/06B65D1/0215B29C49/0073B29B2911/14133B29B2911/14466B65D2501/0081B29B2911/1418B29B2911/14026B29K2277/00B29B2911/14093B29B2911/1404B29C49/22B29B2911/14066B29B2911/14326B29B11/10B29B2911/1408B29K2023/086B29B2911/14153B29B2911/14986B29B2911/14033B29B2911/14146B29B2911/1402B29C49/04B29B2911/14333B29K2067/006B29K2077/00B29K2067/00B29K2867/00B29B2911/14173B65D1/0223B29C49/18B29K2995/0067B29B2911/14126B29B11/08Y10T428/1352B29C2949/3008B29C2949/3012B29C2949/3026B29C2949/302B29C2949/3016B29C2949/303B29C2949/3024B29C2949/3036B29C2949/3028B29C2949/26B29C2949/28B29C2949/24B29C2949/22B29C2949/3041B29C2949/3038B29C2949/3032B29C2949/3044B29C2949/3046B29C2949/0723B29C2949/0732B29C2949/0733B29C2949/073B29C2949/072B29C2949/0777B29C2949/0773B29C49/6472B29C49/642B29C49/071B29C2949/0715B29C49/6605B29C2049/7831B29C2049/7832B29C2049/7862B29C2049/78645B29C2049/7868B29C49/087B29C2049/7879C08L2666/18C08L2666/20
Inventor 浅井直铃木正人上杉大辅
Owner YOSHINO KOGYOSHO CO LTD
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