プレス延伸成形法の開発
Development of Press Orientation Molding Method
片岡 紘・豊内 薫
Kataoka, Hiroshi / Toyouchi, Kaoru
A method for biaxial orientation of synthetic resin under compressive force by pressing was studied. One key factor affecting press orientation is the uniformity of the flow of synthetic resin especially due to plug flow that occurs between the press dies. Uniformity is improved if the die surface is coated with an appropriate lubricant, the die surface has a surface roughness of about 1 S, lubricating resin films are present, there is an adequate temperature difference between the surface and core layers of the synthetic resin being processed, and the pressing proceeds at an adequate rate. Efficient press orientation needs efficient die surface heating and cooling. This requirement is met by the stack press orientation method, air gap method, and fixed-die -temperature method.
Key words: (non)