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Container with base with corrugated inner base

A technology of inner base, base, used in the manufacture of containers such as bottles or cans

Active Publication Date: 2016-01-13
SIDEL PARTICIPATIONS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this design, the formation of the (diamond-shaped) teeth creates problems with the blowability of the substrate, and in fact high blowing pressures have to be used to obtain the structure

Method used

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  • Container with base with corrugated inner base
  • Container with base with corrugated inner base
  • Container with base with corrugated inner base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The figures show a container 1 , here a bottle, manufactured by stretch blowing from thermoplastic material such as PET (polyethylene terephthalate) preforms, which are preheated to A temperature higher than the glass transition temperature of a material.

[0032] Preferably, the container 1 is of the HR (acronym for heatresistant) heat-resistant type; in this case, the container can be drawn and blown inside a mould, the walls of which are heated to increase the material by heat supply of crystallinity.

[0033] The container 1 comprises a threaded neck 2 with a mouth 3 at the upper end. In continuation of the neck 2, the container 1 comprises in its upper part a shoulder 4 which is continued by a side wall or body 5 having the general shape of Rotationally symmetrical shape.

[0034] The container 1 also has a base 6 extending at the lower end of the container 1 , continuing the container body 5 .

[0035] The container body 5 is substantially cylindrical in its l...

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PUM

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Abstract

Plastic container (1) having a body (5) and a base (6), the base (6) having an annular outer base (8) and a deformable membrane (10), the annular outer base delimiting the plastic container (1) main placement plane (9), the diaphragm extends radially inside the annular outer seat (8), the diaphragm is arranged to be able to assume two configurations: a retracted configuration, in which the diaphragm (10) Extends axially above the main placement plane (9); deployed configuration, in which the diaphragm (10) has an annular inner seat (14) projecting outwards towards the plastic container (1) in the form of an annular flange extending axially below the main placement plane (9), defining an auxiliary placement plane (15); the base (6) has a series of concave zones (20) in the annular inner seat (15) , the concave area forms a local interruption area of ​​the auxiliary placement plane (15).

Description

technical field [0001] The invention relates to the manufacture of containers, such as bottles or cans, obtained by blowing or stretch blowing of preforms of thermoplastic material. Background technique [0002] Conventional stretch blow molding induces a bi-orientation (axial and radial) of the material, which gives good structural rigidity to the final container. However, this dual orientation leads to residual stresses in the material which are released during hot infusion, especially with liquids at temperatures above the glass transition temperature of the material, thus causing deformation of the container which may render it unsaleable. [0003] In order to minimize the deformation of the container during the contraction of the liquid accompanying the cooling of the liquid after hot filling, it is known to either provide the container body with a deformable shield which bends under the effect of contraction when the liquid cools, or to The capacity to be deformed (or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D1/02B65D79/00
CPCB65D1/0276B65D1/0284B65D79/0081B65D11/18
Inventor M·布科布扎
Owner SIDEL PARTICIPATIONS SAS