BRIEF INTRODUCTION: SP-670C MULTI-LAYER PLASTIC SHEET EXTRUDING MACHINE was designed and made by absorbing & digesting advanced technology at home and abroad, it is mainly used to produce plastic sheet of PP, PS, PE, ABS, HLPS, they are the materials for making beverage mugs, ice-cream cup, jelly cup, and other packing containers. Structure characteristics: l Good moulding , equal sheet thickness and constant flowing speed due to the large L/D redo of the screw in the extrusion unit. l Screw, die head and drum are made of high quality of alloy steel with optimum hardness, strong corrosion resistance and long operating life after nitrogen treatment. l Advanced net-electricity-changed device in the die head results in easy operation and high production efficience. l It is a more reasonable technics to adopt three roller structure, it improve the quality of sheet. l Adopt advanced frequency converter to be easy to adjust the linear speed of oblique three rollers and drive.