Books – strips – and leaves – Book – element thereof – or accessory therefor
Patent
1992-04-08
1994-01-11
Bell, Paul A.
Books, strips, and leaves
Book, element thereof, or accessory therefor
281 211, 281 29, 412 3, 412 1, B42D 106
Patent
active
052774457
ABSTRACT:
A filing book with bag sheets comprising a cover sheet and a plural number of bag sheets made of plastics and fixed tightly at the central part of the inside of the cover sheet by heat sealing to form a singly bound book has a structure that the central parts of all of a number of bag sheets are tightly fixed with the cover sheet of paper by heat sealing through an intermediate laminate of paper and plastics film, an intermediate plastic bonding tape or a plastic sheet laminated to the cover sheet.
The filing book with bag sheets stands upright firmly, gives comfortable feeling to hands by providing stiffness and smoothness to the cover sheet because the cover sheet is made mainly with paper and, at the same time, can be prepared easily by fixing the bag sheets tightly with the cover sheet by heat sealing even though the cover sheet is mainly made of paper.
REFERENCES:
patent: 4844508 (1989-07-01), Choi
patent: 5002447 (1991-03-01), Borel
Bell Paul A.
Yamagata Guraviya Co., Ltd.
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