| 摘要 |
Process for the low temperature shaping processing of polyethylene terephthalate which comprises preparing a polyethylene terephthalate shaping material having the predetermined shape by subjecting polyethylene terephthalate having an average molecular weight of at least 12000 to an extrusion moulding or injection moulding operation and, optionally, laminating a high polymer material, or metallic or inorganic material on the shaping material, pressing the shaping material or the laminate shaping material against a mould having the predetermined shape at a temperature of 0 DEG to 240 DEG C. under the conditions comprising a total processing pressure of 5 to 800000 kg, a unit pressure of 3 to 30000 kg/cm2 and a processing rate of 2 to 10000 cm/min. According to the above described process, a shaped article having toughness and uniform quality can be easily and cheaply obtained. |
