FIELD: molding of blank into desired shape.
SUBSTANCE: method involves providing blank containing heat shrinkable material tending to deformation in desired manner upon heating of material shrinkable upon heating to temperature exceeding temperature at which said material deforms; placing substance heated by microwave radiation at site adjoining selected portion of blank; exposing substance to microwave radiation so that it is heated to heat said blank portion to temperature above deformation temperature for causing deformation of selected blank portion in desired manner and rendering desired shape to blank.
EFFECT: simplified molding process.
17 cl, 4 dwg
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