Sealable web or sheet product

Radiation imagery chemistry: process – composition – or product th – Imaged product – Structurally defined

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4284111, 428413, 428414, 428480, 428481, 428484, 428485, 428486, 428492, 428507, 428511, 428522, 428523, 4285375, 428206, 428200, 430104, 430 47, 430126, G03G 700, B32B 300, B32B 706, B32B 714

Patent

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054864364

ABSTRACT:
A web or sheet product is provided which is coated on at least a portion of its surface with a bond-enabling material for adhering toner particles, on the surface of the sheet. The sheet product can be used as a mailer or confidential form which is sealed using toner particles as the adhesive. The bond-enabling material may be a polymer which is coated on the sheet as a liquid and then cured to form a film on the surface of the sheet. The bond-enabling material is resistant to melting or degrading when exposed to temperatures used for fusing toner particles, and additionally may act as a tie coat to enhance the adhesion of toner particles to the surface of the sheet. The bond-enabling material may be coated on the peripheral edges of the sheet, and toner particles are printed over the bond-enabling material on the peripheral edges of the sheet. The sheet is folded and sealed by the application of heat and pressure to the edges of the sheet.

REFERENCES:
patent: 2855324 (1958-10-01), Van Dorn
patent: 4245025 (1981-01-01), Kato et al.
patent: 4846454 (1989-07-01), Parklander
patent: 5045426 (1991-09-01), Maierson et al.
patent: 5102737 (1992-04-01), Josephy et al.
patent: 5123892 (1992-06-01), Lin
patent: 5213560 (1993-05-01), Crowley

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