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Mechanical principle of PFA tube extruder
- Categories:News
- Author:PFA tube lady
- Origin:DANKAI
- Time of issue:2003-04-21 17:00
- Views:
Mechanical principle of PFA tube extruder
- Categories:News
- Author:PFA tube lady
- Origin:DANKAI
- Time of issue:2003-04-21 17:00
- Views:
PFA particles are added into the hopper of PFA extruder, and the mixed material is extruded from the porous head or metal mesh by high pressure. Under normal circumstances, the effective length of PFA screw is divided into three definite effective lengths of three segments according to the diameter of screw and the depth of pitch, which are generally calculated as one third of each segment.
PFA material of the last thread started calling conveying part: the PFA material here is not shape, but need to be heated and squeezed, used to think the PFA material is loose, proved the PFA material is solid, that is to say, the material is solid plug here, just like solid plug, so as long as the delivery task is its function.
The second part is called the compression section. At this time, the volume of the thread groove changes from large to small, and the temperature should reach the plasticization degree of the PFA material. The compression here is generated by the third part of the conveying section and compressed to the first part here. This is called the compression ratio of the screw -3_1. Some machines have also changed, and the finished PFA material enters the third part.
Figure 1: Extruder 1 Source: Dan Kai
The third part is the measurement part, here can not be lower than the plasticization temperature of PFA material, the material here can maintain the plasticization temperature, as accurate as the measurement pump, quantitative conveying melt material supply head, generally slightly higher.
The shell of the extrusion head is usually fixed on the body with bolts. The mold inside the head contains a mold core seat, and then the nut is fixed on the wire inlet of the head. The mold core seat also has a mold core inside, and the mold core seat has a hole in the center, which acts through the core wire. The extrusion process can be divided into continuous extrusion and intermittent extrusion according to different pressure methods. The former uses a screw extruder, while the latter uses a plunger extruder. This kind of screw extruder can be roughly divided into single screw extruder and multi - screw extruder.
Figure 2: Extruder 2 Source: Dan Kai
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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