Thermoforming Design Guidelines Universal （热成型设计准则普遍）.pdf

•• 800800--553553- •• info@info@ Thermoforming Design Guidelines By February 2014 • 800-553-0120 • info@  Introduction………………………………………………..…..3  Materials………….………………………………………..…….6  Designing for Forming…………………………………10  General Forming Design……………….…………..……14  Contact………………………………………………..…………20 Table of Contents 2 • 800-553-0120 • info@ Thermoforming is a process that uses heat and pressure to mold a flat sheet of thermoplastic material to a particular shape. It is important to remember that the start of the thermoforming process is always a flat sheet of material. This means that certain design elements such as a “T” shaped rib section cannot be “molded in” but need to be created by the addition of another piece as a secondary operation. The other by-product of starting with a flat sheet is that all molded features will impact both the inside and the outside of the part. For example, a formed rib will cause a female impression on one side of the Introduction part and a corresponding male impression on the opposite side. It is also important to remember that as the material forms an