METHOD OF MANUFACTURE OF PLASTIC CONTAINERS Russian patent published in 1996 - IPC

FIELD: manufacture of plastic containers in form of little boxes for treatment, storage and transportation of fruit and vegetables. SUBSTANCE: method comes to extruding from plastic at least one section, cutting out of member to form bottom, two side and two end-face walls, four corner supports and subsequently assembling of container from these members. At least some areas of members are subjected to perforating by stamping so that plastic is drawn and prestress is created in perforated areas. EFFECT: enhanced mechanical properties of boxes, reduced production costs. 9 cl, 8 dwg