Global Trade Hub QUICK FIND

Hi-quality Screw and barrel for Injection Machine

Price:	US$ 100
Minimum Order:	1
Payment Terms:	TT LC
Port of Export:	Ningbo

Product Details

Model No.:	Tizatech	Brand Name:	Tizatech

Certification:	ISO9001
Specification:	More detail specification please contact us for catalogue Single Screw Extrusion Extrusion is a technology to convey materials which dates back far before the plastic era. It has been in use in the ceramics industry for ages. When we also include screws to transport water,the technology is thousands of years old. For plastic processing, extrusion has been used from the start. First to convey PVC and polyethylene, later also for engineering plastics. However, screw modifications become necessary. The length of a screw is expressed as theratio between diameter and length. For a 21 D screw with a diameter 3 cm, theactive length is thus 63 cm. Since the emergence of crystalline engineering plastics, the length of the screws had to be increased. A screw length of 24 D is quite common. The geometry of screws can be varied.Widely used for extrusion applications are 3-zone screws and barrier screws. 3-zone screws consist of 3 zones: Feed Zone, Compression Zone, Metering Zone The feed section is the part of the screw where the unmolten polymer enters into the barrel. The rotating screw moves the material along the heated barrel where it starts to melt. In the compression zone, gases like air and volatiles like moisture, are being removed. In the compression zone, the flight depth decreases and gases are pushed back into the direction of the hopper. Finally, the material enters the metering section. In this section, pressure is generated which enables the material to be conveyed into the shaping area, like feed block or film die. The compression ratio of the screw is the ratio between the flight depth of the feed section and the ratio of themetering section. Most screws have a flight helix that is equal to the diameter of the screw.

Certification:

ISO9001

Specification:

More detail specification please contact us for catalogue

Single Screw Extrusion
Extrusion is a technology to convey materials which dates back far before the plastic era. It has been in use in the ceramics industry for ages. When we also include screws to transport water,the technology is thousands of years old.
For plastic processing, extrusion has been used from the start. First to convey PVC and polyethylene, later also for engineering plastics. However, screw modifications become necessary.
The length of a screw is expressed as theratio between diameter and length. For a 21 D screw with a diameter 3 cm, theactive length is thus 63 cm. Since the emergence of crystalline engineering plastics, the length of the screws had to be increased. A screw length of 24 D is quite common. The geometry of screws can be varied.Widely used for extrusion applications are 3-zone screws and barrier screws.
3-zone screws consist of 3 zones: Feed Zone, Compression Zone, Metering Zone
The feed section is the part of the screw where the unmolten polymer enters into the barrel. The rotating screw moves the material along the heated barrel where it starts to melt.
In the compression zone, gases like air and volatiles like moisture, are being removed. In the compression zone, the flight depth decreases and gases are pushed back into the direction of the hopper.
Finally, the material enters the metering section. In this section, pressure is generated which enables the material to be conveyed into the shaping area, like feed block or film die.
The compression ratio of the screw is the ratio between the flight depth of the feed section and the ratio of themetering section.
Most screws have a flight helix that is equal to the diameter of the screw.

Packaging & Delivery

Packaging:	wooden case
Delivery/Lead Time:	10 days
Production Capacity:	500/month

Product Description

Dear sir ,
Good day to you !
Screw and barrel for extrusion machie (blowing drawing granulation)

More info pls find kaylee(at)tizatech.com , our web is www*tizatech*com

Waiting for your inquiry !
Kaylee.

Hi-quality Screw and barrel for Injection Machine

SUPPLIER PROFILE
Company:	Ningbo Tianze Machinery Technology Co.,
City/State	Ningbo, Zhejiang	Country:	China
Business Type:	Export - Manufacturer / Trading Company	Established:	1988
Member Since:	2017	Contact Person	kaylee cai

SUPPLIER PROFILE

Ningbo Tianze Machinery Technology Co.,

City/State/Country -

Ningbo, Zhejiang

China

Business Type -

Export - Manufacturer / Trading Company

Established -

1988

Member Since -

2017

Contact Person -

kaylee cai