Sanitary sheets made of waste paper and a process of...

Details Sanitary sheets made of waste paper and a process of... Sanitary sheets made of waste paper and a process of...

2011-07-19

2011-07-19

Daniels, Matthew J (Department: 1741)

Paper making and fiber liberation

Processes and products

With winding or roll forming

C427S258000, C162S192000

Reexamination Certificate

active

07981249

ABSTRACT:
This invention relates to an improved smudge free sanitary sheet made of waste paper and a process of preparing the same through processing the surplus newsprint and more precisely processing used/recycled paper. The sanitary sheets are prepared by the process steps of collecting pre-consumer overprint or post consumer read newspapers; grading the collected waste newspaper; drying and sterilizing the graded newspaper by applying ultraviolet, infrared and/or gamma rays; trimming and cutting the dried sterilized sheets in appropriate sizes; applying on at least one of the sides of the waste newspaper an aqueous coating comprising of a mixture of resin such as bleached shellac, a dye, a germicide such as Benzaikonium Chloride (BC) and/or PCMX (Chloroxylenol), a safe colour, a known deodorant and optionally cosmetic chemicals such as emollient and a foaming agent such as a detergent.

REFERENCES:
patent: 2118549 (1938-05-01), Cochrane, Jr.
patent: 2974058 (1961-03-01), Pihl
patent: 3663689 (1972-05-01), Karnaky et al.
patent: 4170681 (1979-10-01), Edwards et al.
patent: 4952426 (1990-08-01), Guttag
patent: 5262224 (1993-11-01), Ozaki et al.

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