{"id":4416,"date":"2025-09-05T05:57:40","date_gmt":"2025-09-05T05:57:40","guid":{"rendered":"http:\/\/kingstarlaundry.com\/?p=4416"},"modified":"2025-09-05T05:57:40","modified_gmt":"2025-09-05T05:57:40","slug":"general-stain-removal-process-for-laundry-shops-scientific-solutions-to-stains","status":"publish","type":"post","link":"https:\/\/kingstarlaundry.com\/it\/general-stain-removal-process-for-laundry-shops-scientific-solutions-to-stains\/","title":{"rendered":"General Stain Removal Process for Laundry Shops: Scientific Solutions to Stains"},"content":{"rendered":"

On\u00a0the operation\u00a0counter\u00a0in the laundry shops<\/b><\/u><\/strong><\/a>, dealing with each stained piece of clothing is a microscopic “battle”. A mixture of solid dust, oil, and protein stains adheres to fabric fibers\u00a0through static electricity, chemical bonds, and other “shackles.”\u00a0The job of laundry is to rely on a detailed understanding of the characteristics of dirt and use scientific methods to break down these stains by layer so that clothes can be clean again.<\/p>\n

\"process<\/p>\n

Step 1: Determine the <\/strong>S<\/strong>tain <\/strong>T<\/strong>ype<\/strong><\/h2>\n

When you pick up a piece of stained clothing, you must first determine the stain. Color is an important basis for judgment. For example\uff1a<\/p>\n

Light yellow to brown stains<\/strong>:\u00a0They may be traces of oxidised animal or vegetable oils, or special stains containing tannins, such as coffee stains and tea stains, or they may be the oxidised protein stains (such as sweat stains and blood stains)<\/p>\n

Coloured stains: <\/strong>Special stains, such as juice and soy sauce, often appear in different colors, such as red, purple, and brown, because of the specific chromophores.<\/p>\n

In addition to colour, you also need to look at the form of the stain (liquid or solid particles), the feel of the adhesion (hard and brittle or sticky), and test the reaction characteristics (use a reagent to lightly touch and judge, such as using rust remover to test rust stains).<\/p>\n

Mixed stains are common. For example, collar stains are often a combination of sebum (liquid stains), sweat (specific stains containing protein), and dust (solid stains). Oxidation can also lead to stubborn brownish-yellow stains. This step is crucial for distinguishing the primary stain type and choosing between dry cleaning and water washing based on the fabric’s characteristics, setting the treatment.<\/p>\n

\"stubborn<\/p>\n

 <\/p>\n

Step 2: <\/strong>Pretreatment<\/strong><\/h2>\n

Pretreatment is more targeted according to the characteristics of different stains:<\/p>\n

Oils (animals, plants, or minerals): <\/strong>Solvents break down oils directly in dry cleaning. In water\u00a0cleaning, solvent-based degreasers or nonionic surfactants mix oils with water and break them down.<\/p>\n

P<\/strong>rotein soils<\/strong>\u00a0(blood, milk, etc.)<\/strong>: Enzyme solutions or oxidizing agents (oxygen bleach, hydrogen peroxide) break protein chains, with water temperature carefully controlled to prevent coagulation.<\/p>\n

Special <\/strong>coloured <\/strong>stains (juice, soy sauce, etc.)<\/strong>: We should employ mild oxidants to break down the molecules that make the colour. When dry cleaning, you should use oxidisers that work with solvents. When\u00a0doing water\u00a0cleaning, you should use products that are based on oxygen.\u00a0In the two cases, you need to avoid damaging fabric.<\/p>\n

Solid soils (mud, dust clumps)<\/strong>: Nonionic surfactant-based agents in dry cleaning, or warm water with surfactants in water cleaning, loosen adhesion and prepare for the main wash.<\/p>\n

Step 3: Main Wash <\/strong>Program<\/strong><\/h2>\n

After\u00a0people\u00a0choose\u00a0dry cleaning or water washing according to the fabric, the main wash program is carried out\u00a0according to scientific logic:<\/p>\n

Dry Cleaning<\/strong>: Organic solvents go into fibers. Specialized pretreatment agents\u00a0form an adsorption layer on the fiber surface, solubilizing water-soluble dirt, and the drum\u2019s mechanical force shakes off dirt.\u00a0Nonionic surfactants form protective films to prevent redeposition.<\/p>\n

W<\/strong>ater<\/strong>\u00a0Cleaning<\/strong>: The detergent thoroughly moistens the fibers and the surfactants lower the surface tension of water, which\u00a0improves the repulsive force between dirt and fibers. Mechanical force helps remove the dirt. In addition, softeners eliminate the interference of hard water ions on surfactants.<\/p>\n

Whether it is dry cleaning or water washing, key parameters must be controlled:<\/p>\n

Ensure solvent purity and circulation speed during dry cleaning.<\/p>\n

Control surfactant concentration (which must be higher than the critical micelle concentration) and water temperature during water washing<\/u><\/a>.<\/p>\n

Ensure that different types of dirt can be stably suspended in the medium.<\/p>\n

Step 4: Post-Treatment<\/strong><\/h2>\n

Taking clothes out of the dry cleaner or washing machine is not the end of the job.<\/p>\n

Residual marks<\/strong>: Solvent residues in dry cleaning due to insufficient drying should be\u00a0treated with pure solvent and air-drying. Watermarks after water washing are mainly due to\u00a0dense fabric (uneven dryness and wetness) and the accumulation of free pigments\u00a0can be corrected with neutralizing solutions and heat drying.\u00a0You can use a damp cloth dipped in neutralizing acid water to wipe. This can help balance the pH of the fibers while dispersing the pigment. Also, use a hot air blower to dry it to prevent the mark from solidifying.<\/p>\n

Stubborn edges<\/strong>: Cuffs, collars, and seams may need hand-applied stain removers for complete cleaning.\u00a0(Dry cleaning: solvent-based stain removers Water cleaning: water-based stain removers)<\/p>\n

Fabric care<\/strong>: Adjust the treatment method according to the characteristics of the fiber.\u00a0Pay attention to moisturizing and shaping wool fabrics after dry cleaning.<\/p>\n

Control the ironing temperature after washing to prevent fiber brittleness.<\/p>\n

During the final inspection, laundry\u00a0shop staff will focus on those areas that were stained\u00a0to check whether they have been cleaned.<\/p>\n

The <\/strong>U<\/strong>nderlying <\/strong>L<\/strong>ogic <\/strong>O<\/strong>f <\/strong>S<\/strong>cientific <\/strong>L<\/strong>aundry<\/strong><\/h2>\n

The key to\u00a0this stain removal<\/b><\/u><\/strong><\/a>\u00a0is matching specialized technologies with dirt characteristics and washing methods: dry cleaning is good at dealing with oil stains and sensitive fabrics, while water washing has more advantages in removing water-soluble dirt. Enzymes and surfactants are\u00a0essential tools in both cleaning methods. Washing clothes is not a simple “soaking and stirring,” but a precise operation based on the dirt removal\u00a0technology, so that each type of stain can find a corresponding solution to break it down, finally achieving the cleanliness and renewal of clothes.<\/p>","protected":false},"excerpt":{"rendered":"

On\u00a0the operation\u00a0counter\u00a0in the laundry shops, dealing with each stained piece of clothing is a microscopic “battle”. A mixture of solid […]<\/p>","protected":false},"author":1,"featured_media":4417,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[28],"tags":[],"class_list":["post-4416","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/posts\/4416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/comments?post=4416"}],"version-history":[{"count":1,"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/posts\/4416\/revisions"}],"predecessor-version":[{"id":4420,"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/posts\/4416\/revisions\/4420"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/media\/4417"}],"wp:attachment":[{"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/media?parent=4416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/categories?post=4416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kingstarlaundry.com\/it\/wp-json\/wp\/v2\/tags?post=4416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}