Process for production of a bobbin tube for yarn, device for...

Details Process for production of a bobbin tube for yarn, device for... Process for production of a bobbin tube for yarn, device for...

2007-01-09

2007-01-09

Matecki, Kathy (Department: 3654)

Manufacturing container or tube from paper; or other manufacturi

Tube making

Reexamination Certificate

active

10480386

ABSTRACT:
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 the narrow marginal area. The diameter of the riser thereof is equal to the interior diameter of the cardboard tube. At the same time, against the 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 its rotatory die.

REFERENCES:
patent: 1983361 (1934-12-01), Marshall
patent: 3990649 (1976-11-01), Adams
patent: 5056733 (1991-10-01), Segars et al.
patent: 2003/0034413 (2003-02-01), Pederson et al.
patent: 1060720 (2000-12-01), None
patent: 2314827 (1998-01-01), None
patent: 2344337 (2000-06-01), None
patent: 2001031055 (2001-02-01), None

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