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Light preform structure and mold thereof

A lightweight preform technology, applied in the field of lightweight preform structure and its mold

Pending Publication Date: 2019-01-29
GUANG DONG XING LIAN PRECISE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: need a preform structure with smooth plastic flow during blow molding, no accumulation of material, uniform thickness and uniform shear stress

Method used

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  • Light preform structure and mold thereof
  • Light preform structure and mold thereof
  • Light preform structure and mold thereof

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Embodiment Construction

[0023] The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection / connection relationships mentioned in this article do not refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. The various technical features in the invention can be combined interactively on the premise of not conflicting wi...

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Abstract

The invention discloses a light preform structure. The light preform structure comprises a preform with an opening. The cross section, along the center axis of the preform, of the preform is a datum plane. The outer side edge of the datum plane comprises an outer bottleneck segment, an outer bottle body segment and an outer bottle bottom segment which are all sequentially connected, and correspondingly, the inner side edge of the datum plane comprises an inner bottleneck segment, an inner bottle body segment and an inner bottle bottom segment which are all sequentially connected. The outer bottle bottom segment is a structural line or is formed by sequentially connecting multiple structural lines. The inner bottle bottom segment is a structural line or is formed by sequentially connectingmultiple structural lines. Each structural line comprises a straight line and / or a curved line. The distance between the inner bottle bottom segment and the outer bottle bottom segment is gradually increased in the direction from the bottom of the preform to the opening of the preform. After a bottle is blown through the light preform structure, the bottle bottom segment is correspondingly light,production is easy, the flowing speed is higher during injection molding, the shearing stress is small, the crystallization rate is low, and the practicality is high.

Description

technical field [0001] The invention relates to a container preform, in particular to a lightweight preform structure and a mold thereof. Background technique [0002] The structure of the preform has an important influence on the molding quality of the bottle, and the shape of the bottom of the preform is a crucial part of the quality. The bottom of the preform is divided into two parts: spherical and pointed. When using a spherical preform bottom, The filling of the spherical bottom is faster, but the bottom of the outer bottle is easy to accumulate material, resulting in unnecessary waste of raw materials. When using the pointed bottom shape and the side wall thickness is the same, the weight of the pointed bottom preform is lighter than the spherical bottom preform. However, because the turning point is too steep, the flow of plastic is not smooth, the filling is slow, and the shear stress is relatively large, so the bottle is explosive. Therefore, a method that can over...

Claims

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Application Information

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IPC IPC(8): B29C49/00B29C49/48
CPCB29C49/48B29C49/071
Inventor 姜晓平卢佳董书生陈宾海
Owner GUANG DONG XING LIAN PRECISE MACHINERY
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