Method for thinning regions of packing material to facilitate pa

Details Method for thinning regions of packing material to facilitate pa Method for thinning regions of packing material to facilitate pa

1985-10-29

1987-02-24

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

With cutting, breaking, tearing, or abrading

Plural cutting, breaking, tearing, or abrading stations

493370, 493467, 51 74R, 51326, B31B 125

Patent

active

046454845

ABSTRACT:
A method for thinning a web along selected regions of a blank or a web of a material having at least one layer of paper or cardboard by passing the material over one or more die rolls, each being provided with raised portions which bring the material into contact with a rapidly rotating grinding wheel which grinds which selected surfaces of the material away.

REFERENCES:
patent: 2542298 (1951-02-01), Zinn, Jr.
patent: 2982186 (1961-05-01), McKeen
patent: 3010260 (1961-11-01), Subklew
patent: 3073216 (1963-01-01), Gaunt
patent: 3074327 (1963-01-01), Grahn
patent: 3179025 (1965-04-01), Schur
patent: 3408776 (1968-11-01), Kalwaites
patent: 3779786 (1973-12-01), Tone
patent: 3780626 (1973-12-01), Hollier, Jr.
patent: 3854249 (1974-12-01), Fletcher
patent: 4540391 (1985-09-01), Fries, Jr.

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