PLASTIC FORM CONTINUOUS EXTRUSION METHOD FOR CONSTRUCTING/CIVIL ENGINEERING CONCRETE, ITS PLASTIC FORM, AND METAL JOINT

摘要

PROBLEM TO BE SOLVED: To efficiently mass-produce a plastic form of constructing/civil engineering concrete by a continuous extrusion method utilizing a thermoplastic product, a waste PET bottle or the like which have been almost impossible to reutilize and have been subjected to disposal heretofore. SOLUTION: A required waste thermoplastic product or waste PET bottle is crushed to obtain pellets with a required size and the crushed pellets are guided to a melting apparatus to be melted at required temp. and the obtained plastic melt is guided into an extruder from the melting machine while held to required temp. and continuously extruded into a mold 14 for a required form from the extruder to be molded and the demolded plastic molded object is quenched to be cured while the cured plastic molded object is cut into required length to obtain a plastic form for a constructing/civil engineering concrete form and a metal joint for connecting the form is obtained.