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Container including a base provided with a deformable membrane

A container and diaphragm technology, applied in the field of container manufacturing, can solve problems such as insufficient solutions

Inactive Publication Date: 2010-08-11
SIDEL PARTICIPATIONS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, known solutions do not appear to be adequate as retailers always demand stricter visual quality standards

Method used

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  • Container including a base provided with a deformable membrane
  • Container including a base provided with a deformable membrane
  • Container including a base provided with a deformable membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 Shown above is a container 1 manufactured by stretch blow molding from a preform of thermoplastic material such as PET (polyethylene terephthalate), which container 1 is here a bottle with a wide neck, with a capacity of approx. 0.6 liters.

[0053] The container 1 comprises a threaded neck 2 with a mouth 3 at the upper end. In extension of the neck 2, the container 1 comprises in its upper part a shoulder 4 widening in the direction opposite to the neck 2, which shoulder 4 is extended by a side wall or body 5, the whole of which The shape is a cylindrical shape of revolution around the main axis X of the container 1 .

[0054] Such as figure 1 and 2 As can be seen in the figure, the body 5 includes a series of reinforcing ribs 6 in the form of annular protrusions, and these reinforcing ribs are separated by some annular grooves 7 two by two. according to figure 1 and 2 In the embodiment shown, some of the grooves 7a located near the shoulder 4 (here the...

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Abstract

The invention relates to a container (1) made from plastic material, characterised in that it consists of: a rigidified body (5); and a container bottom (8) disposed at a lower end of the container (1), said container bottom comprising an annular base (9) extending substantially perpendicularly to the body (5) in an extension of same, an annular step (10) extending from the base (9) into the container (1), an element (12) projecting from the centre of the bottom (8) into the container (1), and a deformable annular membrane (11) in the form of a spherical cap extending substantially perpendicularly to the body (5) between said step (10) and element (12).

Description

technical field [0001] The invention relates to the manufacture of containers, such as bottles or jars, obtained by blow molding or stretch blow molding from preforms of thermoplastic material. Background technique [0002] Conventional stretch blow molding induces bi-orientation (axial and radial) of the material, which gives good structural rigidity to the final container. However, this bi-orientation leads to residual stresses in the material which are released during hot filling, especially with liquids at temperatures above the glass transition temperature of the material, leading to deformation of the container which may render the container unsaleable. [0003] In order to reduce container deformation during hot filling, it is known to accomplish stretch blowing by a heat treatment called heat setting (the English expression "heat set" translates to "thermofixation" in French), which is a treatment by which , for a predetermined period of time (typically a few second...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D79/00B65D1/02
CPCB65D1/0276B65D79/005B65D2501/0036B65D79/0081
Inventor M·德里安D·布雷尔D·安迪奥M·布科布扎
Owner SIDEL PARTICIPATIONS SAS
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