Dual Stage Extrusion Line - China
price: contact company for price
By either single screw extruder or twin screw extruder the process goes
in this sequence: solid conveying, melting, compounding, degassing and
extruding.
Normally, each step requires different screw structure,
different operating conditions, such as RPM, barrel heating temperature,
material pressure, etc.
But as a matter of fact, all these steps perform
through the same screw shaft.
That is, the rotary speed of screw is same
and the temperatures will influence on each step.
All these affect the
pressure build-up and energy input which are so far not possible to be
realized for every inpidual step.
For instance, in order to increase the output of single screw extruder, in conveying part, we would use the screw structure like this: deeper groove depth, longer screw distance, higher RPM, lower die pressure and lower extruding temperature.
But higher RPM means faster conveying speed and this would make a negative effect on melting.
Sometimes for better mixing, we would use kneading elements which can provide better compounding as well as higher temperature.
If the material being processed is heat-sensitive, this kneading element may get it degraded.
The same problem would happen on a twin screw extruder.
Company Contact:
- Posted By: Nanjing Gorray Extrusion Equipment LLC
- Phone: 13813842859
- Address: Lishui Econmic Development Zone,Najnjing,China, Nanjing , China
- Email:
- Website: http://www.gorraychina.com
Published date: June 20, 2013
- Business Description: involved in international trade import export of goods, products, and services
Related listings
-
Parallel Counterrotating Twin Screw ExtruderPlastic Working Machinery - Nanjing Gorray Extrusion Equipment LLC - China - June 20, 2013 - contact company for price
It becomes more practical for PVC and PET. Opposite rotating of the twin screws is the main difference from a co-rotating twin screw extruder. This feature results in less shearing which is the major advantage we design for. It has been successfully ...
-
Gts H High Torque Twin Screw ExtruderPlastic Working Machinery - Nanjing Gorray Extrusion Equipment LLC - China - June 20, 2013 - contact company for price
Absorbing the most advanced technology in the world, Nanjing Gorray has further developed the design of high torque twin screw extruder with high power. Gearbox: thick-wall cast-iron case is used to decrease vibration and noise; topology theory is ap...
-
Parallel Co Rotating Twin Screw ExtruderPlastic Working Machinery - Nanjing Gorray Extrusion Equipment LLC - China - June 20, 2013 - contact company for price
A modern high-performance extruder is distinguished by its specialized features. A twin screw extruder has evolved in design, performance and productivity through a span of several decades. A twin screw extruder has made it possible to achieve high q...
Safe Trade Tips
- Ask for business references and check them
- Use a payment method that offers better protection for all such as Letters of credit and verified professional escrow services. Avoid payments in advance such as money transfers
- Verify their business via their local Chamber of Commerce
- Search the internet using their website address, their business name, their phone and fax numbers, and their email addresses to see if you can find any feedback about them.
- Get to know more about scams and fraud to avoid: Internet Crime Complaint Center - Consumer Financial Protection Bureau
- This site is never involved in any transaction, and does not handle payments, shipping, guarantee transactions, provide escrow services, or offer "buyer protection" or "seller certification"