Method of obtaining bend lines on packaging material

Manufacturing container or tube from paper; or other manufacturi – With cutting – breaking – tearing – or abrading – And with bending

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Details

493287, 493370, 493396, 493403, B31B 125, B31B 325, B31F 700

Patent

active

052076326

ABSTRACT:
Bend lines on packaging material are obtained by creasing, which results in crease lines which are raised on one side of the material. According to the invention the raised parts of the crease lines are removed by mechanical processing, such as by milling, considerably increasing the crease lines' weakening effect on the packaging material and facilitating subsequent bending of the material.

REFERENCES:
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patent: 3058868 (1962-10-01), Schroeder
patent: 3073216 (1963-01-01), Gaunt
patent: 3074327 (1963-01-01), Grahn
patent: 3432375 (1969-03-01), Rein
patent: 3495507 (1970-02-01), Haas et al.
patent: 3654842 (1972-04-01), Schwenk
patent: 3779786 (1973-12-01), Tone
patent: 4645484 (1987-02-01), Niske
patent: 4708708 (1987-11-01), Fries

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