Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1994-08-01
1997-05-27
Czaja, Donald E.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162206, 15 3, 134 5, 134 9, 134 38, 134122R, D21B 108
Patent
active
056328567
ABSTRACT:
A method of removing plastic ink film from a sheet of copy paper by preheating the paper sheet in a preheating chamber to loosen the plastic ink film from the paper sheet followed by contacting the heated paper sheet with an adhesive surface by pressing the adhesive surface against the heated paper sheet, fusing the plastic ink film to the adhesive surface and then peeling the heated paper sheet from the adhesive surface so that the plastic ink film is removed from the paper sheet. The fused plastic ink film is then removed from the adhesive surface by cleaning and the adhesive roller is made ready for another paper sheet. The paper sheet is then rehumidified, calenderized and treated with white toner to restore whiteness, followed by optical inspection of the paper sheet for the presence of holes and to determine if the plastic ink film has been removed from the paper sheet. Depending on the optical inspection, the paper sheet is sorted into a rejected or accepted output bin. Both sides of the paper sheet may be treated simultaneously by this method.
REFERENCES:
patent: 3674736 (1972-07-01), Lerman et al.
patent: 4818342 (1989-04-01), Wagle et al.
patent: 4872777 (1989-10-01), Dalbke
patent: 5019249 (1991-05-01), Sugai et al.
patent: 5113221 (1992-05-01), Kotani et al.
patent: 5178669 (1993-01-01), Watanabe
patent: 5229350 (1993-07-01), Shinagawa
patent: 5405726 (1995-04-01), Abe et al.
Wall Street Journal, (Aug. 20, 1993), "Tired of Shredding?" by David P. Hamilton.
Science & Tech. Magazine, (Jan. 1994), Finally a way to Recycle by Ruth Coxeter.
Ricoh-Press Release, (Aug. 1993), "Tech. Allowing Copier Paper" by Ricoh Corp.
Czaja Donald E.
Nguyen Dean T.
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