TW249780B - Continuous production process for full page type 3-D cover - Google Patents

Abstract

A continuous production process for full page type 3-D cover (addition one), which comprises preparing a continuously extruded plastic sheet with fixedwidth, processing the plastic sheet into a right section surface sheet and aleft section bottom sheet in which the two sections are connected by a middle section thin plastic belt, in which the extruded plastic sheet, after leaving the mold opening, are divided into a front section and a rear section which are separately subjected to coloring including coloring of the middle section followed by being cut into fixed length to form full page type plastic cover, which is characterized in that: the rear section of wide opening mold of the extruder undergoes single-machine single-material foamable plastic extrusion to form 3-D cross sectional plastic sheet according to the shape of die opening followed by transversely dividing the rear section foaming area of die opening inlet into different sections according to ductility, surface feeling, weight, etc. in order to be heated to different temperature to perform no foaming or different-degree of foaming on different sections of the plastic sheet to achieve multiple benefit single machine single material extrusion with reduced cost, convenience in material selection, prevention of foreign material repelling, etc.