Page 457 - Injection Molding Advanced Troubleshooting Guide
P. 457

46 Warp

















          „ „46.1„ Description



          Warp is a defect where the part is distorted from the intended shape. Figure 46.1
          shows a straight edge laid against a warped part, notice the gap between the part
          and straight edge.
          Also known as: distortion
          Mistaken identities: none









          Figure 46.1  Example of warp




          „ „46.2„ Warp Troubleshooting Chart



          Table 46.1 shows the warp troubleshooting chart.


          Table 46.1 Warp Troubleshooting Chart
          Molding Process   Mold              Machine           Material
          mold temperature  sticking          machine performance  material type
          melt temperature  cooling issues    robot handling    part packaging
          pressure differential  cavity imbalance               filler content and type
          gate seal         gating                               
          low cooling time                                       
          post-mold handling                                     
   452   453   454   455   456   457   458   459   460   461   462