Page 12 - Injection Molding Advanced Troubleshooting Guide

Contents XIII

14.4 Tooling Techniques ........................................... 128
14.5 Other Cooling Concerns ....................................... 130

15 Black or Brown Specks ..................................... 131

15.1 Description .................................................. 131
15.2 Black Specks Troubleshooting Chart ............................ 132
15.3 Black Specks Troubleshooting .................................. 132
15.3.1 Black Specks Troubleshooting Molding Process Issues ...... 132
15.3.2 Black Specks Troubleshooting Mold Issues ................ 133
15.3.3 Black Specks Troubleshooting Machine Issues ............. 135
15.3.4 Black Specks Troubleshooting Material Issues ............. 137

16 Blush ...................................................... 141
16.1 Description .................................................. 141

16.2 Blush Troubleshooting Chart ................................... 142
16.3 Blush Troubleshooting ........................................ 142
16.3.1 Blush Troubleshooting Molding Process Issues ............. 142
16.3.2 Blush Troubleshooting Tooling Issues ..................... 145
16.3.3 Blush Troubleshooting Machine Issues .................... 148
16.3.4 Blush Troubleshooting Material Issues .................... 149

17 Brown Streaks ............................................. 151
17.1 Description .................................................. 151
17.2 Brown Streak Troubleshooting Chart ............................ 152
17.3 Brown Streak Troubleshooting ................................. 152
17.3.1 Brown Streak Troubleshooting Molding Process Issues ...... 152
17.3.2 Brown Streak Troubleshooting Mold Issues ................ 156
17.3.3 Brown Streak Troubleshooting Machine Issues ............. 159
17.3.4 Brown Streak Troubleshooting Material Issues ............. 162

18 Bubbles ................................................... 165
18.1 Description .................................................. 165

18.2 Bubbles Troubleshooting Chart ................................. 166
18.3 Bubbles Troubleshooting ...................................... 166
18.3.1 Bubbles Troubleshooting Molding Process Issues ........... 167
18.3.2 Bubbles Troubleshooting Mold Issues ..................... 168
18.3.3 Bubbles Troubleshooting Machine Issues .................. 170
18.3.4 Bubbles Troubleshooting Material Issues .................. 171