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Spray-and-vac cleaning is a “no-touch” method - cleaning is accomplished without the need for workers to touch soiled surfaces with their hands - used in professional cleaning in which a pressurized, diluted cleaning solution is applied to soiled or contaminated surfaces. Using the same machine, the area is then rinsed; this is typically followed by vacuum suctioning that removes the applied liquid along with the suspended solids and dissolved contaminants that have been removed from the surface.〔"Cleaning Methods for Ceramic Tile Floors," Controlled Environments magazine, April 2008, http://www.cemag.us/articles.asp?pid=744〕 A key advantage of this method over traditional approaches is the ability to deep clean grouted areas (e.g., wall, counter and floor tile) preventing buildup of soil and bacteria in grout lines. Application of a cleaning solution followed by pressurized rinsing and vacuuming removes soil more effectively than methods that rely solely on absorbent wiping (e.g., mopping, microfiber and cleaning cloth use).〔 In addition, studies published by ISSA,〔ISSA, http://www.issa.com〕 the largest cleaning association in the world, have found that compared to legacy methods these systems potentially reduce cleaning times by 1/3 or more.〔Official 447 Cleaning Times, prepared by ManageMen and published by (ISSA )〕 Unlike outdoor pressure washers with application pressures of 1,000 - 5,000 psi, spray-and-vac units are designed for long-term indoor use on grout and other surfaces, and offer variable application pressures ranging from 110 – 500 psi. ==History== The first spray-and-vac system was developed by inventor Robert S. Robinson in 1997. A U.S. Patent was issued in 2001,〔Multi-functional cleaning machine Patent #6,206,980 http://www.google.com/patents/about?id=vq8FAAAAEBAJ〕 and the technology has since been licensed by other manufacturers of cleaning equipment. A number of manufacturers in the professional cleaning industry now produce and market spray-and-vac systems or systems that are similar, and approximately 40,000-50,000 units have been sold worldwide〔Kaivac, http://www.kaivac.com, Tennant, http://www.tennantco.com/na-en/products/machines/750-all-surface-cleaner.aspx, Hydro, http://www.hydrosystemsco.com/new_ICS8800.asp〕 Some systems are battery operated; others do not have vacuuming capabilities however they are still classified under this product category. Spray-and-vac systems first became popular for restroom cleaning. However, over the years, users of the equipment have found a variety of uses for the equipment, including cleaning chairs and tables in cafeterias, cleaning carpets and hard-surface flooring, and deep cleaning a variety of surfaces.〔"Emerging Trends In Hard Floor Care," CMM magazine, April 2009, http://www.cmmonline.com/article.asp?IndexID=6637023〕 An emerging market for spray-and-vac systems is public schools where the ability of the units to remove organic soils thoroughly, documented by Adenosine triphosphate (ATP) bioluminescence testing, is displacing traditional mop-and-bucket cleaning methods.〔"Measured Results," American School and University magazine, April 2009, http://asumag.com/Maintenance/integrated-cleaning-measurement-schools-200904/index1.html〕 Correctional and foodservice markets are also appropriate for this method since they typically feature grouted, ceramic tile floors.〔Corrections.com, March 2009, http://www.corrections.com/news/article/20959〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Spray-and-vac cleaning」の詳細全文を読む スポンサード リンク
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