chapter  11
26 Pages

- Elements of Injection Molding Style for Medical Device R&D

First Rule: Consistent Wall Thickness ................................................................... 219 Consistent Wall Thickness: Ribs and Bosses ....................................................220 Consistent Wall Thickness: Core Out Thick Sections ....................................... 221

Second Rule: Designing in Adequate Draft ........................................................... 222 Third Rule: Radius Your Corners .......................................................................... 222

Two Ways Molds Are Made .............................................................................. 223 Fourth Rule: Specify the Friendliest-to-Mold and Least Expensive Material ..... 223

Plastic Materials, Filled Plastics .......................................................................224 Glass .............................................................................................................224 Barium ..........................................................................................................224 Plastics Additives to Watch for .....................................................................224

Fifth Rule: Use Straight Parting Lines ..................................................................224 Sixth Rule: is “Do It in the Mold” .........................................................................226