FIELD: packing engineering. SUBSTANCE: device has plates 11 with [- shaped cross-section. The plates are mounted in pair for abutting their bearing surfaces 19 and forming rectangular chamber that encloses a part of a tube made of packing material. Projections 20 and hollows 21, which enter each other and direct the tube in a chamber between the plates without pinching, are provided on bearing surfaces 19. Projections can be rounded. Outer surface of the projections can be chamfered. EFFECT: enhanced reliability. 3 cl, 3 dwg
