Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating or impregnation functions biologically
Patent
1996-12-03
1998-08-11
Zirker, Daniel
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Coating or impregnation functions biologically
1510493, 15215, 15217, 428 96, 442 63, A47L 2322, A01N 5900, A61L 216
Patent
active
057927120
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to microbicidal mats for use in preventing various microbes from being brought into clean zones of semiconductor plants, biochemical plants, hospitals, old-aged homes or like facilities by persons entering the clean zones.
BACKGROUND ART
Microbicidal mats are installed at entrances of rooms in hospitals for preventing nosocomial infection and the like due to proliferation of pathogenic bacteria and other microbes adhering to footwear.
Conventional microbicidal mats of this type include, for example, those comprising only a rubber base and a sticky sheet overlying the rubber base, those comprising a rubber base and an overlying cotton cloth impregnated with a disinfectant, and those comprising a cotton cloth impregnated with a disinfectant and adapted to be laid directly on a floor.
Of these, those mats having a mere sticky sheet attempt to eliminate microbes adhering to the bottom of footwear by utilizing the stickiness of the sticky sheet. Such mats, though exhibiting a certain effect on dust, have little microbicidal effect and, therefore, often leave microbes adhering to the sticky sheet alive, thus resulting in mats unsatisfactorily serving as microbicidal mats.
Those mats having a cotton cloth impregnated with a disinfectant, though exhibiting a microbicidal action, are subject to everyday replacement of their cotton cloth because the disinfectant sprayed onto the cloth evaporates in a relatively short time. Such an everyday replacement involves problems of a large consumption of the disinfectant as well as of dangerous and cumbersome operations. Where a cotton cloth is laid directly on a floor, there arises a problem that the disinfectant contaminated by microbes may ooze out onto the floor or corrode the floor.
Thus, there have been proposed microbicidal mats which maintain a microbicidal power over a relatively long time and does not require frequent replenishment of a disinfectant, such mats comprising, instead of a cotton cloth, a water-absorptive polymer sheet or a sponge having a high water retention each impregnated with a disinfectant. With these mats, the use of the water-absorptive polymer sheet or the sponge having a high water retention suppresses the evaporation of the disinfectant.
Typical disinfectants for use in such microbicidal mats include a chlorhexidine gluconate solution and a benzalkonium chloride solution and the like. Recently, there have appeared disinfectant-resistant microbes which have acquired resistance against these disinfectants. Microbicidal mats employing such disinfectants are, therefore, not so successful for preventing infection caused by the disinfectant-resistant microbes.
Although these disinfectants can exhibit a certain degree of anti microbial activity against such disinfectant-resistant microbes if the concentration or amount thereof to be used is increased, the use of a large quantity of a disinfectant is not practical in terms of cost.
Further, although it is desired that these microbicidal mats be disposed of by incineration after having been used for a predetermined period of time for sanitary reason, they often have residual water because of their water-retentive characteristics and hence are difficult to incinerate.
In view of the foregoing, it is an object of the present invention to provide a microbicidal mat exhibiting a microbicidal activity even against those microbes having a resistance against a disinfectant.
Another object of the present invention is to provide a microbicidal mat which readily allows itself to be disposed of by incineration after use.
DISCLOSURE OF INVENTION
The inventors of the present invention have discovered the fact that an aqueous solution of an alkali metal salt exhibits an extensive anti microbial activity and possesses an anti microbial activity even against microbes having a resistance against a disinfectant such as a chlorhexidine gluconate solution, and have accomplished the present invention.
The present invention provides a microbicidal mat comprising a liquid
REFERENCES:
patent: 3956155 (1976-05-01), Schwuger
patent: 4837079 (1989-06-01), Quantrille et al.
patent: 5006267 (1991-04-01), Vaughn et al.
patent: 5091102 (1992-02-01), Sheridan
patent: 5506040 (1996-04-01), Cordani
By Japan Society of Antiblastic and Antifungal Technology "Antiblastic and Antifungal Handbook", May 25, 1986, Gihodo Shuppan Co., Ltd. pp. 448-453.
Ichiro Nishi and two others "Surfactant Handbook", Jul. 5, 1960, Sangyo Tosho Co., Ltd. pp. 738-747.
Hori Shoji
Kawabata Akira
Mitsuhashi Hiroaki
Toyoshima Satoru
Ushiya Yukio
Daiken Iki Co., Ltd.
Zirker Daniel
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