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Specific analysis of PFA tube extrusion die

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Specific analysis of PFA tube extrusion die

  • Categories:News
  • Author:PFA tube lady
  • Origin:DANKAI
  • Time of issue:2003-05-20 10:27
  • Views:

Specific analysis of PFA tube extrusion die

  • Categories:News
  • Author:PFA tube lady
  • Origin:DANKAI
  • Time of issue:2003-05-20 10:27
  • Views:

PFA mixing, plasticizing, dehydration, granulation, feeding and other processes or semi-finished products can be done. Therefore, extrusion molding has become one of the most commonly used processing methods for PFA molding.

PFA products produced by PFA extruder mostly use low-capacity PFA raw materials, extrusion molding efficiency is high, less investment, simple manufacturing, continuous production, small footprint, clean environment and other advantages, extrusion molding production of PFA products are widely used, its output accounts for more than 20% of the total output of fluorine plastic products, therefore, Extrusion molding plays a very important role in PFA processing industry.

Typical structure analysis of PFA Extrusion molding Machine:

The main part of the extrusion mold is the PFA head, which has the following four functions.

(1) The spiral motion is transformed into PFA linear motion;

(2) Generate the necessary forming pressure to ensure the compactness of the product;

(3) The material is further plasticized through the head;

(4) Through the head molding product cross-section shape.

Figure 1: Extruder 1    Source: Dan Kai

1. Die and mandrel.

The outer surface of the die forming product and the inner surface of the mandrel forming product is because the forming part of the die and mandrel determines the cross section shape and size of the product.

2. Porous plate (filter plate, grid plate).

The purpose of the porous plate is to change the motion of the PFA material from a spiral to a straight line, while also preventing the entry of unformed PFA and mechanical impurities into the nose port. In addition, the porous plate can also form a certain head pressure, so that the product is more dense.

3. Shunt stent and shunt stent.

A diverter is also called a torpedo head. The plastic is turned into a thin ring through the shunt, which facilitates further heating and plasticizing. The diverter of a large extruder is also equipped with a heater.

The diverter bracket is primarily used to support the diverter and mandrel, but also enables the material diverter to enhance mixing. The diverter bracket can be designed as a whole for small nose.

4. Adjust the screws.

Adjust the gap between die and mandrel to ensure uniform wall thickness.

5. The nose body.

It is used to assemble the connecting parts of the machine head and extruder.

6. Sizing sleeve.

In order to obtain good surface roughness of the product, the size and geometry of the diameter sleeve are determined.

7. It is blocked.

Ensure pipeline pressure to prevent compressed air leakage.

For more information about PFA tube extruder, please continue to pay attention to Shenzhen Dankai Technology Co., LTD.

ShenZhen DanKai Technology Co.,ltd. is an intelligent manufacturing enterprise specializing in the R & D, production, sales and service of FEP, PFA, PTFE,PVDF and other fluoroplastic tube, bar, sheet and film products as well as other insulating materials.

The company has a senior research and development team of international standards and imported fluorine plastic products production line, some fluorine plastic products passed ISO9001, SGS, FDA certification.

The main products are: ① pipe: PTFE polytetrafluoroethylene pipe, FEP pipe, PFA pipe, PVDF pipe; ② Heat-shrinkable tubes: PTFE heat-shrinkable tubes, FEP heat-shrinkable tubes, PFA heat-shrinkable tubes, PVDF heat-shrinkable tubes; ③ Plate and rod films: PTFE plate and rod film, FEP plate and rod film, PFA plate and rod film, PVDF plate and rod film; ④ Insulating materials: silica gel, PE, PVC, UPE, etc.; ⑤ Special class: PFA inlet joint, spiral pipe, spring pipe, rotary cut pipe, welding rod, tee, straight, gasket, joint, taper rod, flaring pipe, sealing pipe, braided pipe, corrugated pipe, etc. At the same time can be customized processing production of various specifications of fluorine plastic products.

This article by the teflon tube little sister original, welcome to pay attention to, take you together long knowledge!

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