Patent for Sale:

Biodegradable Sanitary Sheets Made of Waste Paper    

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 paper.

Overview

1. The invention aims of using the coatings on surplus printed newsprint and thereby makes the newsprint safe for reuse. The treatments as disclosed, apart from protecting against toxic ink also provide a barrier against any contamination left in the reused sheet. It also makes the sheet stronger, smudge-free and aesthetically more acceptable.

2. The invention reduces the cost of making sanitary sheets substantially. By contemplating reuse of waste newsprint, the invention achieves eco-friendliness.

3. The present invention uses the surplus printed newsprint that will be otherwise discarded as waste. At present the waste newsprint is mostly recycled by re-pulping in a paper mill. That is highly energy intensive. The present invention builds upon the size of printed newsprint widely available everyday as surplus or waste after reading.

The inventive process is a tremendous improvement over well-known industrial method of reusing printed sheet in re-pulping and making an inferior grade paper from the pulp which is highly energy intensive. As the coating cost is lower than the fiber cost in the paper, the process has immense economic potential. The above process takes care of these hazards on an industrial scale and may become a mandatory standard for reuse of printed sheets especially where there is an intimate contact with the used sheet. Moreover, most of the sheets reused as per the invention can still be recycled as per existing method of re- pulping and remaking, due to careful selection of material used in the coat. Thus it is claimed that the above invented process can be readily applied commercially, especially in view of wide-spread awareness of environment pollution and need for more recycling. These will also provide a ready substitute for plastic bags generally used for retail packaging, by making reuse of previously printed newsprint possible, by altering many of its properties like toxicity, strength, aesthetics etc. acceptable, as per the disclosed invention.

Primary Application of the Technology

The sanitary sheet made of waste paper can be used in a wide variety of applications for example: safe paper bags for carrying dry stuff, a single use barrier in outpatient beds of clinics or on x-ray tables, publicly used mat seat e.g. gym, safe pet care, paper towel, toilet paper, sanitary napkin, child diapers, adult incontinence products etc.

The seller may consider selling these patents individually.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 162: Paper Making And Fiber Liberation

Processes for the liberation, recovery or purification of fibers as individual staple fibers or as a pulp of such fibers, including cellulosic fibers, from a fibrous containing material by use of a reagent which exerts some chemical or solvent action upon the fibrous material. Reagent compositions employed in the processes stated above. Processes including the deposition of fibers from a liquid suspension thereof in order to form an interfelted product and processes of treatment of the deposited fibrous product prior to the final drying thereof; Fibrous pulps and deposited fibrous webs or articles. This class also includes any nonstructural fiber or fiber containing product. An endless Fourdrinier wire is provided for in this class.

Subclass 119: With coating
Subclass 192: Utilizing electrical or wave energy

Class 427: Coating Processes

This is the generic class for: A. applying or obtaining a coating on a surface. The coating may be hard or soft, permanent or transitory, supplied solely by extraneous materials or supplied wholly or in part by the base material. B. impregnating a base by causing a coating material to extend or penetrate into the base material, or into the interstices of a porous, cellular or foraminous material. C. taking preparatory treatments of the base material, subsequent treatments of the coated base material and other ancillary noncoating operations claimed, per se, processes limited to etching for making a base more compatible with, or adherent to, the coating wherein the base is the substrate (work) onto which a coating is applied are included.

Subclass 258: Applying superposed diverse coatings or coating a coated base

European Patent Classes & Classifications Covered in this listing:

Class D21H19: TEXTILES; PAPER - PAPER-MAKING; PRODUCTION OF CELLULOSE

PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C or D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR . Coated paper .