Micro-pipe foamed sheet extruder head

Abstract

The invention discloses a micro-pipe foamed sheet extruder head comprising a head body, an upper die body, a lower die body and a breather, wherein the front end of the head body is connected with an extruder; the upper die body and the lower die body are buckled up and down; a branch pipe flow channel and a die flow channel are arranged between the upper die body and the lower die body; the die flow channel is communicated with the branch pipe flow channel; the breather is composed of an air inlet pipe, an air inlet branch pipe and at least one porous air outlet pipe; the upper end of the air inlet pipe extends out of the upper die body; the lower end of the air inlet pipe extends into the middle part of the branch pipe flow channel; the air inlet branch pipe is connected with the bottomend of the air inlet pipe and crosswise arranged at the middle part of the branch pipe flow channel; the head end of the porous air outlet pipe is connected with the air inlet branch pipe; the tail end of the porous air outlet pipe extends to the exit of the die flow channel; and the porous air outlet pipe is arranged at the very middle position of the die flow channel. The micro-pipe foamed sheet extruder head has the advantages of simple structure, high work efficiency and good product quality.

Description

technical field [0001] The invention relates to a microtube foamed sheet extruder head. Background technique [0002] At present, plastic and rubber foam materials have been widely used in various packaging cushioning fields. The manufacturing method of the foamed product is: pass the physical foaming agent or chemical foaming agent into the polymer melt through conventional processing equipment, such as extruder, injection molding machine and molding machine, etc. After pressing, the dissolved gas in the melt expands to produce a foamed product. However, the foamed product that can be obtained by the above method has a single structure and can only be molded into a general foamed sheet. [0003] With the development of modern medical technology, medical microcatheters have developed rapidly all over the world. However, the value of imported medical microcatheters in China exceeds 150 million US dollars every year. The development of this technology in China is still q...

AI Technical Summary

Problems solved by technology

However, the value of domestically imported medical microcatheters exceeds 150 million U.S. dollars every year. The development of this technology in China is still quite backward, especially the lack of related molding equipment and technology, which has become a major bottleneck restricting the improvement of national medical level.

[0004] At present, there is no machine head at home and abroad that can form micropipe foam sheets, and this field still needs to be broken through

Images