Method to determine factors contributing to thermoplastic sheet shrinkage
Abstract
A test method is presented for the determination of shrinkage behavior in vacuum-formed thermoplastic resin sheeting, as presently simulated for various resin lots, sheet-gage thicknesses, sheet orientations, and mold profiles. The thermoforming machine and vacuum-forming mold characteristics are discussed. It is established that the four variable factors exert statistically significant effects on the shrinkage response of three Declar resin lots, but that these are of no real practical significance for either engineering or manufacturing operations.
- Publication:
-
36th International SAMPE Symposium and Exhibition
- Pub Date:
- 1991
- Bibcode:
- 1991sampesymp.1127R
- Keywords:
-
- Factorial Design;
- Shrinkage;
- Thermoplastic Resins;
- Vacuum Effects;
- Forming Techniques;
- Load Tests;
- Molding Materials;
- Sheets;
- Structural Mechanics