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Process for the manufacture of articles made of thermoplastics

A technology for thermoplastics and articles, which is used in the field of manufacturing articles made of thermoplastics, which can solve the problems of high cost, etc.

Active Publication Date: 2016-02-10
考特斯机械科技(佛山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of this solution is that the molds required for the manufacture of the objects are relatively expensive and cost prohibitive due to the shutters pre-set in them

Method used

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  • Process for the manufacture of articles made of thermoplastics
  • Process for the manufacture of articles made of thermoplastics
  • Process for the manufacture of articles made of thermoplastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In the method according to the invention, first a tubular preform 1 is continuously discharged from an extrusion head 2 with a not-shown annular nozzle, suspended in the direction of gravity. The preform 1 is extruded between the open blow mold halves 3a, 3b of a blow mold.

[0036]The blow mold is shown greatly simplified in the figures. The blow mold halves, each of which can be constructed in multiple parts, can be arranged in a known manner on a mold clamping plate (not shown) of a closing support.

[0037] After extruding the preform 1 to the figure 1 Before, during or after the lengths shown, a loading mandrel 4 is arranged from below as first holding means between the blow mold halves 3a, 3b with a The functional component carrier 5.

[0038] Items to be crafted (see image 3 ) is formed as a plastic fuel tank 6 with a functional component carrier 5 to be arranged therein. The functional component carrier 5 accommodates functional components not shown for th...

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PUM

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Abstract

The invention relates to a method for producing an article from thermoplastic material in which a tube-shaped preform is introduced into a multi-part blow mold and is expanded and formed by applying differential pressure, wherein, before the forming of the preform, at least one insert is introduced into the preform by means of a first holding means and wherein, before the forming of the preform, the insert is taken over by at least one second holding means puncturing the wall of the preform, the second holding means being formed as a blowing pin and an expansion and re-forming of the preform taking place by applying pressure medium with the second holding means.

Description

technical field [0001] The invention relates to a method for producing articles made of thermoplastics by extrusion blow moulding. Background technique [0002] In extrusion blow molding, a tubular preform made of softened thermoplastic is usually ejected / extruded from an annular nozzle and placed into a multi-part Between the open halves of the blow mold. Alternatively, the extrusion head may be positioned above the die such that the preform is extruded hanging between the open parts of the die. The mold is closed around the preform, which is expanded in the cavity of the blow mold, usually by introducing a pressure medium. The cavity of the blow mold defines the finished shape of the item to be manufactured. In blow molding, the deformation and shaping of the article are usually achieved under the heat of the thermoplastic extruded plastic material. [0003] Extrusion blow molding can produce not only small hollow bodies but also large hollow bodies, such as vials, bot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/16B29C49/20B29C49/58B29C49/04B29C49/48B29C49/60
CPCB29C49/20B29C49/04B29C49/16B29C49/48B29C49/60B29C2049/2008B29C2049/2013B29C2049/2073B29C2049/5837B29C2049/609B29C2791/006B29C2791/007B29K2027/06B29L2031/7172
Inventor A·利希特瑙尔S·瓦尔布勒尔
Owner 考特斯机械科技(佛山)有限公司