Folder sheets with reinforced holes, method and apparatus of making same

(54) FOLDER SHEETS WITH REINFORCED HOLES, METHOD AND APPARATUS OF MAKING SAME

(75)

Inventors: Ricardo Lebedevski, Buenos Aires
(AR); Jose Ramon Gallo, La Rioja
(AR)

(73) Assignee: Angel Estrada & Cia, Buenos Aires
(AR)

( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.

(21) Appl. No.: 10/940,412

(22) Filed: Sep. 13, 2004

(65) Prior Publication Data

US 2005/0086912 Al Apr. 28, 2005

Related U.S. Application Data

(63) Continuation-in-part of application No. 09/950,929, filed on Sep. 12, 2001, now abandoned.

(30) Foreign Application Priority Data

Mar. 12, 2001 (AR) M010101153

(51) Int. CI.

B65B 63/00 (2006.01)
B65B 53/00 (2006.01)
B05D 5/00 (2006.01)

(52) U.S. CI 53/428; 53/442; 53/435;

53/447; 53/449; 281/38; 402/79; 427/285;

428/137; 428/192

(58) Field of Classification Search 53/442,

53/557, 435, 428, 520, 111 R, 447, 540, 449, 53/171, 174; 281/38; 402/79; 427/285; 428/137,192; 493/229,237,194,199 See application file for complete search history.

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.

20 Claims, 4 Drawing Sheets

Page 2

U.S. PATENT DOCUMENTS

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5,518,799 A * 5/1996 Finestone et al 428/137

5,842,722 A * 12/1998 Carlson 283/107

5,878,554 A * 3/1999 Loree et al 53/540

6,040,018 A * 3/2000 Lamers 427/285

6,146,728 A * 11/2000 Bay 402/79

6,261,658 Bl * 7/2001 Schmidt 428/192

6,632,042 Bl * 10/2003 Liener Chin et al 402/79

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