Visitor No.5588400 ..   
TrustPassKenplas Industry Ltd.Discussion Forum
 
Kenplas Forum ==> Injection Molding (Machine) ==> PET Screw Design
<< Previous Topic Next Topic >>
1
Send me pet screw design.

Fine
13
Poor
1
6/4/2012 2:57:43 PM By ashwin joshi
can i produce 5 gallon perform in normal type injection molding machine , and what shall i do if i do not have the special design screw , and what is the suitable grade of pet materials can i use to produce the 5 gallon pet weight of the preform is 700 gm . pls. advice

Fine
15
Poor
3
8/20/2011 8:30:52 PM By ahmed
Can n you send me some pet screw designs please ???

Fine
13
Poor
3
3/3/2011 8:23:32 PM By ahmet akar
Yes, any kind of preform is used to produce many size and design of bottles.

Fine
8
Poor
6
3/23/2006 12:46:42 PM By Eric
I REQUEST THAT ANYBODY CAN TELL ABOUT THE PREFORM DESIGN AND RELATION WITH BOTTLE DESIGN.CAN WE KEEP ONE PREFORM TO MAKE MANY DESIGN BOTLES.PLEASE REPLY

Fine
7
Poor
3
12/7/2005 3:36:36 AM By KARUNA
It is a request that i wanted to know the total design of petpreform and mould mfg.

Fine
2
Poor
2
8/12/2005 2:46:07 PM By anil
We strongly recommend a distributive mix/melt feedscrew design when processing PET to achieve low acetaldehyde levels, high intrinsic viscosity, and good melting efficiency for high throughput rates. A distributive mix/melt feedscrew design should be selected as it achieves these objectives by using low shear stress with its unique design. We have provided these designs for many years with great success for processing PET.

Fine
8
Poor
1
7/13/2005 12:38:21 AM By Glycon
There are many factors that dictate screw design for PET. Screw design for PET depends on shot capacity and residece time of the resin. Even though PET is considered to be a semicrystalline resin, it is shear sensitive. Excessive shear will increase the acetaldehyde levels. The let-down ratio in most PETs requires a higher compression ratio 3:1 than most general purpose screws offer. We also usually lengthen the transition section of the screw profile and deepen the channel depths to lessen the amount of shear we impart in the resin.
Because of the required melt quality and melt uniformity for most preforms, we recommend the use of a mixing screw. The mixing screw must be a low-shear design, allowing for good isothermal melt while limiting shear. Most important is knowing the residence time and designing the screw accordingly.

Fine
22
Poor
6
7/13/2005 12:36:45 AM By Larson
1
 
 

Post A Reply

Temporarily shut down, no new message, sorry.

Name:

Email:

Message:

(Max. 2KB)



Attachment:     (Max. 500kB, .RAR.ZIP.JPG.GIF only)
Verification:

This forum published since July 03, 2002. Renewed on June 22, 2005.

[Plastics Project] [Plastics Machinery] [Plastics Mold] [Discussion Forum] [Contact Kenplas]
Copyright © 2017 Kenplas Industry Limited, Hangzhou Kenplas Machinery Ltd.              Powered by Alentus.