B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 75/10 (2006.01) B31F 1/00 (2006.01) B65H 75/50 (2006.01)
Patent
CA 2450657
Consists in that a cardboard tube, with respect to a narrow marginal end area of the same provided with a hollow interior roll, is applied against a rotatory die which has a concave surface suitable for forming an entrant perimetric step by means of constriction of said narrow marginal area, the diameter of the riser thereof being equal to the interior diameter of said cardboard tube and, at the same time, against said interior hollow roll is applied a force of enough intensity to flatten the cavity of the interior hollow roll and apply the wall thereof against the interior face of the wall of the cantilevered end of the cardboard tube formed by the action of said rotatory die.
L'invention concerne un tube en carton appliqué par une étroite zone marginale d'extrémité pourvue d'un rebord intérieur creux contre une matrice rotative présentant une surface concave adaptée pour former un niveau périmétrique entrant par constriction de ladite zone étroite marginale, dont la face verticale présente un diamètre identique au diamètre intérieur dudit tube en carton. Une contrainte d'intensité suffisante pour aplatir le creux du rebord creux intérieur est appliquée en même temps contre celui-ci, appliquant sa paroi contre la face intérieure de la paroi de l'extrémité en saillie du tube en carton formée par l'action de ladite matrice rotative.
Cardona Guell Pere
Valls Roca Ramon
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Klinsan Bcn S.l.
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