Analysis of Ten Steps for Hotel Linen Washing
Release Time:
2014-12-29 20:19
Source:
Hotel linen washing is a very important task in daily hotel management. Are you clear about the 10 steps of hotel linen washing? Today, we share with you the steps of hotel linen washing:
1. Inspection and Classification
First, sort and classify before washing to make the washing targeted.
Classify by linen color. Processing different linens together may cause cross-contamination, and the treatment methods for linens of the same type but different colors also differ; classify by degree of soil: heavy, medium, and light; classify by type of soil, which targets special stains that occur during use, generally treated with special stain removers. Heavy soiled linens mixed with normally soiled linens of the same type for routine washing will cause a lot of rewashing and waste. Classify by fabric texture, such as pure cotton sheets and polyester-cotton sheets must be processed separately. Generally, for sheets with the same soil level, pure cotton consumes longer time, higher temperature, and more detergent than polyester-cotton. Therefore, classification by fabric texture helps improve productivity and save costs. Floor mats should be specially separated and washed and dried on dedicated machines.
2. Stain Removal Treatment
Stain removal refers to the process of using some chemical agents and proper mechanical action to remove stains that cannot be removed by regular water washing and dry cleaning. Stain removal requires certain operational skills and professional knowledge.
3. Rinsing and Pre-washing
Using water and mechanical force to remove as much water-soluble dirt from the fabric as possible, laying a good foundation for the main wash. For medium and heavy soiling, rinsing steps are generally required. Pre-washing is a pre-stain removal process with an appropriate amount of detergent added. Due to water's surface tension, water alone cannot fully wet the dirt. For particularly severe stains, pre-washing is a necessary step. Pre-washing can be arranged after rinsing or directly as the pre-wash process.
4. Main Wash
This process uses water as the medium, combining the chemical action of detergents, mechanical action of the washing machine, appropriate detergent concentration, temperature, and sufficient time to create a reasonable washing and stain removal environment to achieve the cleaning purpose.
5. Bleaching
This process supplements the main wash by mainly removing pigment stains that the main wash cannot completely remove. Oxidative bleach (oxygen bleach powder) is mainly used in this step. Therefore, during operation, water temperature should be strictly controlled between 65℃ and 70℃, and the pH of the washing solution should be controlled between 10.2 and 10.8. The dosage should be strictly controlled according to the type of stain and fabric structure.
6. Rinsing
Rinsing is a diffusion process that allows the residual washing solution containing dirt in the fabric to diffuse into the water, applying a certain temperature (generally 30℃ to 50℃). A high water level quickly reduces the concentration of the washing solution, thus achieving the cleaning purpose.
7. Rinsing and Dehydration
Using the centrifugal force generated by the high-speed rotation of the washing machine drum to minimize the moisture content in the fabric inside the drum. This process requires high equipment performance.
8. Acid Neutralization
Detergents used in washing are usually alkaline. Although multiple rinses are performed, it cannot guarantee that no alkaline components remain. The presence of alkaline substances affects the appearance and feel of the washed items. Using acid to neutralize the alkali can solve these problems.
9. Softening
This process is washable and generally set according to customer needs. Softening is a post-treatment process, not a stain removal process. Softening makes the fabric feel comfortable, prevents static electricity, and acts as a lubricant inside the fabric to prevent fibers from tightly entangling and falling off.
10. Sizing
The sizing step mainly targets cotton or blended fiber fabrics such as restaurant tablecloths, napkins, and some uniforms. After sizing, the fabric surface becomes crisp and prevents fuzzing. It also forms a sizing film on the fabric surface, which hinders dirt penetration to some extent.
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