Products Category
Contact Us

Name: Cindy
Tel: +86-576-84407662
Fax: +86-576-84035875
Mobile: +86-13706578079
Add: North City of Economic Development Zone,Huangyan,Taizhou City,Zhejiang Province,China
Skype: cindy19880102
QQ: 464129895
E-mail: info@plastictoolmaker.com
skype: cindy19880102 QQ: 464129895

[Moulding problem solution] Burn marks gas traps

Author : Date : 7/15/2014 8:43:07 PM
 Burn Marks Gas Traps

Burn marks. Air and gasses in front of the flow front cannot escape due to insufficient venting and are compressed via the incoming melt to the point of ignition.

Variable wall thickness can cause the melt to encircle air and gasses at the flow front resulting in a gas trap. 


Solution:

         1. Reduced injection speed.

         2. Reduce injection pressure.

         3. Improve venting in the area of the burn mark.

         4. Decrease the melt temperature in case of degradation.

         5. Calibrate thermocouples and check band heaters.

         6. Consider flow simulation to calculate the flow front behaviour and investigate practical solutions.

Chinese Deutsch Espanol Francais Italiano Portugues Japanese Korean Arabic Russian
Home | About Us | Products | SOLUTIONS | Video Show | Service | Feedback | Contact Us | SiteMap sitemap
Copyright © 2016 XS Plastic Mould Co., LTD All Rights Reserved