Folder sheets with reinforced holes, method and apparatus of...

Package making – Methods – With contents treating

Reexamination Certificate

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Details

C053S442000, C053S435000, C053S447000, C053S449000, C281S038000, C402S079000, C427S285000, C428S137000, C428S192000

Reexamination Certificate

active

10940412

ABSTRACT:
A method of manufacturing folder sheets with reinforce holes, which comprises unwinding a spindled paper band; printing predetermined graphics on the paper band; causing the paper band to go through corona treatment; applying a reinforcement strip of thermoplastic material to selected areas of the paper band; cutting the printed and partially reinforced paper band in a direction substantially perpendicular to one edge of the paper band in such a fashion as to form a plurality of paper strips each having an elongated reinforced edge area; layering and counting the paper strips until they reach a predetermined number; punching the paper strips in the reinforced edge area in accordance with a predetermined pattern; cutting the punched paper strips in a direction substantially perpendicular to the direction of the first cutting to form a plurality of folder sheets; counting and piling the folder sheets to form a block until they reach a predetermined number; and packaging and boxing the folder sheet blocks.

REFERENCES:
patent: 3232808 (1966-02-01), Dries et al.
patent: 3895476 (1975-07-01), Burns, III
patent: 4354890 (1982-10-01), Maffey
patent: 4528056 (1985-07-01), Hunt et al.
patent: 4910066 (1990-03-01), Foisie
patent: 5304275 (1994-04-01), Lowe
patent: 5518799 (1996-05-01), Finestone et al.
patent: 5842722 (1998-12-01), Carlson
patent: 5878554 (1999-03-01), Loree et al.
patent: 6040018 (2000-03-01), Lamers
patent: 6146728 (2000-11-01), Bay
patent: 6261658 (2001-07-01), Schmidt
patent: 6632042 (2003-10-01), Liener Chin et al.
patent: WO 03/050199 (2003-06-01), None

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