| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to mechanical surface processing of articles or semis from porous polymer materials, i.e. cellular plastics, extruded in screw extruder. Proposed method may be used in chemical and food industries. Method comprises subjecting extruded article surface layer 5 to mechanical effects at extrusion nozzle outlet 5 to eliminate gas bubbles on, at least, a part of article surface. Said bubbles are punched by one or several piercing tools.EFFECT: decreased stresses in surface layer, improved structural and technological properties of porous polymer materials.2 cl, 13 dwg, 3 ex |
