Synthetic resin container having improved shape stability

A synthetic resin and container technology, applied to rigid containers, containers, packaging, etc., can solve problems such as bending, ribs are easy to be heated, and cannot effectively exert the reinforcing effect

Inactive Publication Date: 2006-06-07
YOSHINO KOGYOSHO CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, for this kind of container, when reducing its wall thickness to reduce the amount of resin (light weight) (for example, the resin amount of a 2-liter container is reduced from 69 grams to below 55 grams), due to the content itself Due to the weight (water head pressure, water head pressure) and high temperature, the lower half of the main body of the container will expand outwards and cannot maintain its original shape
Especially w

Method used

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  • Synthetic resin container having improved shape stability
  • Synthetic resin container having improved shape stability
  • Synthetic resin container having improved shape stability

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Embodiment Construction

[0054] Figure 1 to Figure 4 It is the synthetic resin container of the first embodiment of the present invention. The container has a capacity of 2.0 liters and has a slightly quadrilateral cross-section. Number 11 is the waist that the container main body is divided into upper and lower sections. The waist 11 is formed by an annular groove 11a that protrudes toward the inside of the container and surrounds the bottle body.

[0055] Reference number 12 is a reinforcing rib whose upper edge is higher than the bottom of the annular groove 11a but lower than the surface of the main body of the container, and its top end is arc-shaped. In this embodiment, reinforcing ribs 12 are provided at the four corners of the container body.

[0056] It is known that the waist which is arranged on the main body of the container and divides it into upper and lower sections has only a simple concave shape, which is originally used to improve the rigidity of the container. However, due to t...

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Abstract

A synthetic resin container, the container has a waist that divides its main body into upper and lower sections. There are reinforcement ribs higher than the bottom of the groove and lower than the surface of the main body of the container. The main body of the container may also be provided with transverse ribs for reinforcement, which have a recessed portion that is at the same height as the surface of the container, or has only a slight difference in height from the surface of the container. A plurality of indentations concentrating centripetally can also be formed on the container main body, which defines a concave polyhedron wall area inclined toward the concentrating point of the indentations.

Description

technical field [0001] The present invention relates to a synthetic resin container which can meet the requirement of wall thinning, and especially relates to a container which can effectively prevent the reduction of rigidity caused by the thinning of the wall, and has the required shape retention ability (shape retention) nature) synthetic resin container. Background technique [0002] Among various synthetic resin containers, PET bottles made of polyethylene terephthalate (PET) resin are the most common. Inferior, and the cost is also low. Therefore, in recent years, PET bottles are mostly used as containers for food, beverages, cosmetics or pharmaceuticals. [0003] However, such a synthetic resin container has a disadvantage of low strength against external force. For example, when the user holds the main body of the container to pour out the contents, deformation will inevitably occur at the place where the user holds it. In order to improve the resistance of this ...

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Application Information

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IPC IPC(8): B65D1/02B65D1/40
Inventor 筒井直树田边隆次齐藤浩通
Owner YOSHINO KOGYOSHO CO LTD
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