Polypropylene Injection Molding Problems and Solutions

some times when we try to inject plastic part, problems always occur, beginning with shot mold, flashing, and some times jetting.

data below i take from Exxon Mobil Chemical, will explain various Injection Molding Problems and how to solve that properly.

it's begin with

• sink mark
  
• void
  
• shrinkage
  
• weld line
  
• flash
  
• burning
  
• warp
  
• brittle part
  
• sticking in mold
  
• gate bush and various others
  

below if you prefer read it online

Injection Molding Problems and Solutions - Upload a Document to Scribd

but if you prefer download, link below maybe more useful to read and download
http://www.scribd.com/doc/6200927/Injection-Molding-Problems-and-Solutions

this paper is very good tutorial with simple and practice solution for those each problems