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Tri-channel feeding die head extrusion equipment

An extrusion equipment, three-channel technology, applied in the field of three-channel feed die extrusion equipment, can solve the problems of low pressure at both ends, high pressure in the middle of the melt, unbalanced melt pressure distribution, etc., to save raw materials, Solve the effect of high shrinkage rate and reduce cost

Inactive Publication Date: 2015-12-02
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the extrusion of the melt through the die, since the melt enters from the middle of the die and then flows to both sides, the pressure in the middle of the melt is high and the pressure at both ends is low, resulting in an unbalanced distribution of melt pressure and extrusion. The shrinkage rate on both sides of the film is high. This kind of shrinkage problem will cause dissatisfaction in the use process of users, which needs to be solved urgently.

Method used

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  • Tri-channel feeding die head extrusion equipment
  • Tri-channel feeding die head extrusion equipment
  • Tri-channel feeding die head extrusion equipment

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 Shown, a kind of three-passage feeding die head extruding equipment comprises feed device and die head, and described feed device comprises feed seat 1, and three feed pipes 3 (feeding pipe 3) that are communicated with feed seat 1 Material seat 1 is provided with a plastic melt flow channel inside, and is a trident); the middle and both sides of the die head are provided with a connecting block 4, and the connecting block 4 is internally provided with a turning channel, and one end of the channel is connected to the feed pipe 3 communicates, and the other end communicates with the runner of the die head. The plastic melt enters the feeding seat 1 through the screw extrusion device, and then is guided by the trident flow channel in the feeding seat 1. The plastic melt flows into the three feeding pipes 3 respectively, and then f...

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Abstract

The invention discloses tri-channel feeding die head extrusion equipment. The tri-channel feeding die head extrusion equipment comprises a feeding base, feeding pipes, a connecting block and a die head, wherein a plastic melt enters the feeding base through a screw extruder, and the plastic melt enters the left, middle and right three feeding pipes through a three-branch runner in the feeding base. The device can balance the pressure of the melt on the two sides of the die head and can solve the problem that the shrinkage rates of the two sides of a film are high.

Description

technical field [0001] The invention relates to a three-channel feeding die head extrusion equipment, which belongs to the technical field of plastic molding. Background technique [0002] When producing plastic film, the plastic particles are first melted into a plastic melt by a plastic extruder, and the melt is formed in a special film tool to extrude into a film, and then cooled by embossing, and finally the solidified and formed film is formed by a winding mechanism. Film reel packaging. However, during the extrusion of the melt through the die, since the melt enters from the middle of the die and then flows to both sides, the pressure in the middle of the melt is high and the pressure at both ends is low, resulting in an unbalanced distribution of melt pressure and extrusion. The shrinkage rate on both sides of the film is high, and this shrinkage problem will cause dissatisfaction in the use process of users, which needs to be solved urgently. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/14B29L7/00B29C48/305
CPCB29C48/08B29C48/30B29C48/305
Inventor 崔炳洋陈尉刚
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD