| 摘要 |
FIELD: machine building. ^ SUBSTANCE: unit consists of at least one first pair of clamping plates and of second pair of clamping plates parallel to the first one. The clamping plates turn around common axis and reversely converge for clamping filled packing cover and forming a twisted strip free of content. The first pair of plates consists of two mirror-symmetrical, at least approximately identical clamping plates. The second pair consists of the second clamping plates at least approximately identical to the clamping plates of the first pair, and of the first, more short, clamping plates. The first clamping plates of the first pair have a strap which at least approximately repeats an outline of compartments for shortening part of the first clamping plates of the second pair. ^ EFFECT: elimination of packing cover damage and facilitation of efficient operation for cover closing. ^ 11 cl, 2 dwg |
