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Home > News > Extrusion

Bausano introduces PVC pipe head in extrusion lines

Source:Adsale Plastics Network Date :2024-02-14 Editor :RC
Copyright: This article was originally written/edited by Adsale Plastics Network (AdsaleCPRJ.com), republishing and excerpting are not allowed without permission. For any copyright infringement, we will pursue legal liability in accordance with the law.

Bausano introduces an innovative PVC pipe head, which capable of covering a diameter range of 125-400mm, with low flow rates (around 500 kg/hr), preventing material degradation and excessive dwell times in a perfect balance among volume, flow rate and production range.


Bausano PVC pipe head_480.png


Illustration of the PVC pipe head.

 

Compact in size, the pipe head reduces the number of heads from two to one, which reduces mold setup times. The modular design of some parts of the head also facilitates cleaning and maintenance during assembly and disassembly.

 

The special head is then combined with an MD 92/30 Nextmover extruder without induction, featuring specially designed screws to process different dry blend formulations with both highest and lowest quantities of additives.

 

Scientific analysis on design

 

To achieve optimized design of the pipe head, collected information was initially processed using a Brabender plastograph. The starting materials were fed into the chamber, where they were heated and shear stresses were applied between two counter-rotating rotors.


Bausano PVC pipe head analysis_480.png


Analysis on pressure, velocity and temperature of the pipe head during machining.

 

During the machining, Bausano’s Design Team measured the torque applied to the rotating screws based on the measurement on viscosity of molten material and changes produced by machining on the system, including gelation, branching and degradation.

 

The team then conducted an in-depth analysis of the rheological curves with capillary rheometer and fluid-dynamic simulation software to optimize the design of the new extrusion head and screws, accurately predicting the material’s behavior during the machining process.

 

New extrusion systems

 

Bausano’s novel solution features a multi-diameter head in C45 carbon steel, which is compact, modular and chrome-plated in the surface where the material flows, and for the barrel and the nitrided screws. Can be found in the S16 model, the nitrided screws have been specially engineered to ensure high performance with different dry blend formulations.

 

The line is also equipped with three volumetric dosing units – one for PVC, one stabilizer to prevent burns and one for the master, two reverse milling areas before degassing that increase and anticipate the feeding and gelling capacity, and end-of-line with tank, ink-jet marker, haul-off unit, cutting unit and belling machine.


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Extruder and extrusion line
 Changzhou Gomplast Rollers Co., Ltd      
 WINTECH PLASTIC MACHINERY CO.,LTD      
 Guangdong Liansu Machinery Manufacturing Co., Ltd.      
 Nanjing Chuancheng Chemical Machinery Co., Ltd.      
 Hebei gelia plastic machinery sales co., ltd      
 CHANGZHOU XINBOXUAN MACHINERY MANUFACTURING CO.,LTD      
 Jiangsu Kaifeng Xinye Intelligent Equipment Co.,Ltd      
 ZHEJIANG GAOZHONG PLASTIC MACHINERY CO.,LTD      
 Wuxi Yuda Plastic Pipe Welding Machinery Factory      
 WUXI BOYU PLASTIC MACHINERY CO., LTD.      
 Qingdao Weier Plastic Machinery Co.,Ltd      
 Zhejiang Shengxinfeng Machinery Co.,Ltd      

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