Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using disinfecting or sterilizing substance
Reexamination Certificate
1999-04-30
2001-12-04
Warden, Sr., Robert J. (Department: 1744)
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using disinfecting or sterilizing substance
C422S028000, C422S029000, C422S037000, C428S308800, C428S311110
Reexamination Certificate
active
06325969
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a paper product impregnated with chemical material to accomplish a variety of industrial and household tasks.
2. Description of the Related Art
Paper is typically formed from a mesh of fine fibers, generally of vegetable origin. Currently, wood pulp is the most common source for paper. However, other fibrous material such as cotton, flax, kenaf, hemp, or straw have been used in paper manufacture. Most commonly paper is produced in the form of thin sheets. However paper can also be manufactured in other physical forms such as compressed pellets.
Paper products currently enjoy widespread use in almost every field of human endeavor. Paper is used as sterile packaging for surgical instruments, and as a cheap, disposable covering for surfaces in treatment and operating rooms. In the food service industry, paper is universally utilized to store both solid and liquid foods, as well as to serve those foods to the consumer. Paper is also emerging as a major component in absorbent material for disposal of wastes from pets and other sources, for example in the material known as cat litter.
Given the wide uses for paper products, there is a need in the art for a paper product which receives, retains, and releases useful chemical species.
Unfortunately, paper provides a suitable environment for the growth of microorganisms. The ability of paper to support the growth of bacteria, molds, or fungi is attributable to the fact that paper is itself is derived from living tissue and contains residual organic material that can provide sustenance for microorganisms.
The unwanted growth of microorganisms poses a health hazard for many of the potential applications for paper products For example, maintaining a sterile environment during the treatment of illness and injury has proven to dramatically reduce the possibility of infection. In the area of food services, maintaining an micro-organism free environment prolongs the viability of foodstuffs, and enhances the effect of such processes as pasteurization. In waste disposal applications, reduction in the growth of microorganisms can cut down on noxious odors and the danger of infection to waste-handlers.
Therefore, there is also a need in the art for a paper product which can inhibit the growth of microorganisms, and which is cheap and easy to manufacture.
SUMMARY OF THE INVENTION
The present invention relates to a porous paper material which has been impregnated with at least one chemical material. The impregnating chemical may beneficially react with other chemicals.
In one embodiment, paper is impregnated with hydrogen peroxide and acetic acid, and reaction between the hydrogen peroxide and acetic acid creates peracetic acid. Peracetic acid is both biocidal and volatile. The gaseous peracetic acid diffuses out of pores in the paper, creating a no-growth zone on the surface of and immediately surrounding the paper. In this manner, chemically impregnated paper in accordance with the present invention may promote a sterile environment useful for a wide variety of activities, for example in the treatment of illness/injury, or in the packaging/storage of foodstuffs.
A method for sterilizing an area in accordance with the present invention comprises the steps of impregnating a porous paper product with a chemical material, placing the porous paper product in the area, and causing reaction of the impregnated chemical material to produce a biocidal compound.
A method for impregnating a porous paper product in accordance with one embodiment of the present invention comprises the steps of providing the porous paper product having pores and a surface, and exposing the surface of the porous paper product to at least one chemical which conveys biocidal properties to the porous paper product.
A composition for producing peracetic acid in accordance with one embodiment of the present invention comprises a porous paper product impregnated with hydrogen peroxide and an acid.
The features and advantages of the present invention will be understood upon consideration of the following detailed description of the invention and the accompanying drawings.
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Aamodt James
Colvin John
Bonzagni, Esq. Mary R.
Holland & Bonzagni, P.C
Soubra Imad
Warden, Sr. Robert J.
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