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Container having a bottom provided with a vault with a double indentation

A container and vault technology, which is applied in the field of containers with double-walled concave vaults at the bottom, which can solve the problems of reducing container molding blowing pressure, high blowing pressure, and incompatibility with energy-saving requirements, etc.

Inactive Publication Date: 2015-07-29
SIDEL PARTICIPATIONS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this shape trick, although effective, requires both an increase in material, which is incompatible with the aforementioned weight reduction requirements, and a high blowing pressure, which is incompatible with energy saving requirements, which means, on the contrary, lower Blowing pressure required for container molding

Method used

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  • Container having a bottom provided with a vault with a double indentation
  • Container having a bottom provided with a vault with a double indentation
  • Container having a bottom provided with a vault with a double indentation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] figure 1 Above shows a container 1 , here a bottle, which is stretch-blown from a preform of thermoplastic material, for example of polyethylene terephthalate.

[0038] The container 1 has a neck 2 provided with a mouth 3 at the upper end. In the extension of the neck 2, the container 1 has in its upper part a shoulder 4 enlarged in the direction opposite the neck 2, which is formed by a generally cylindrical The side walls or body 5 of the shape are elongated.

[0039] The container 1 also has a bottom 6 extending from the lower end of the body 5 opposite the neck 2 . The bottom 6 has a peripheral seat 7 in the shape of an annular flange extending substantially axially into the extension of the body 5 . The base 7 terminates in a placement plane 8 perpendicular to the axis X of the container 1, which defines the lower end of the container 1 and allows the container to be placed upright on a flat surface.

[0040] Denoting the outer diameter of the resting plane 8 b...

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PUM

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Abstract

The invention relates to a container made of plastics material, which is provided with a body and a bottom (6) that extends from a lower end of the body, the bottom (6) comprising: a peripheral base (7) that defines a setting-down plane (8); a concave vault (10) which extends from a central area (11), forming a peg that projects towards the inside of the container, to the base (7); a set of main reinforcing grooves (13) which extend radially from the central area (11) as far at least as the base (7), wherein, in said container, the vault (10) has a central region (15), a median region (16) and a peripheral region (17) that are each separated by an internal axial indentation (18) and an external axial indentation (19) which extend annularly in a continuous manner around the central area (11).

Description

technical field [0001] The present invention relates to the manufacture of containers, in particular bottles or jugs, obtained from preforms of plastic material such as polyethylene terephthalate ((PET)) by blow molding or blow stretching. Background technique [0002] Manufacture of containers by blowing usually consists in inserting into a mold with a container cavity a blank (preform or intermediate container obtained by pre-blowing of a preform) preheated to a temperature above the glass transition temperature of the material ), injecting a pressurized fluid (in particular a gas such as air) into the blank. Blowing can be supplemented by pre-stretching of the blank via a slide bar. [0003] The molecular bi-orientation (axial and radial, respectively parallel and perpendicular to the general axis of the container) that the material undergoes during blowing imparts a certain structural rigidity to the container. [0004] However, the market demands to reduce the weight ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D1/02
CPCB65D1/0284B65D1/42B65D2501/0036
Inventor W·艾梅尔
Owner SIDEL PARTICIPATIONS SAS