One, the principle of washing equipment
Washing quality is the mechanical force, temperature, time, detergent, water quality and operating procedures, and other factors **** the same role in the results, only the perfect combination of these factors to wash high-quality cloth.
Two, washing equipment quality control points
(1) sub-check: before washing the best sub-check, dirty and clean stains are separated, dark and light colors are separated, different fabrics are separated, in order to help control the cost and ensure the quality of washing.
(2) dry clothes loading capacity of 70-80% of the detergent carrying capacity, do not overload.
(3) All medical fabrics should be pre-washed, with warm water around 20-30 ℃, washing for 3-5 minutes, which not only removes all kinds of dirt, medicine stains, blood stains on the surface of the fabrics, but also has the function of removing a large number of microbial bacteria, and prepares for the main wash to thoroughly remove the dirt within the fabric fibers. For heavy dirt fabrics, please add appropriate amount of laundry to enhance the dissolution of dirt, decomposition efforts.
(4) the main wash to master the "low water level" control, be sure to reserve the water content of the heating process steam out of the position, the international recommendation of the 50kg washing machine main wash water level (main wash to join the water + steam water content + rinse water) should be in the appropriate 15cm.
(5) the amount of detergent input should be based on the type of dirt and dirty degree of increase or decrease in the amount of the main wash concentration should be controlled at 0.3-0.5% for the standard decontamination value, PH value should be 10-12, the detergent in order to play the best decontamination effect. And disinfectant (color bleach or chlorine bleach) must be put later, the water temperature of 60 ℃ or more input in order to play the best effect.
(6) When there are more oil stains and dark stains, oil-removing and stain-removing whitening creams or emulsifiers can be added to remove oil, paste, grease and cream-containing oily stains.
(7) According to the characteristics of medical compensation proteinaceous stains more, it is recommended that: the main wash in two steps, add strong medical laundry detergent, 30-55 ℃ between the washing 5-10 minutes, turn on the steam to 80 ℃ and then wash 8-10 minutes. Low-temperature washing can remove human excretion of dirt, blood, medicine stains; and high temperature can be sterilized, disinfected, increase the brightness of the fabric, the two have different functions, different roles.
(8) in the hot water supply washing machine operation, must master the "gradual cooling" principle, the main washing program before the end of 3-5 minutes to join the cold water, slowly down to 60 ℃ and then drain the main washing sewage, in order to prevent secondary pollution and the occurrence of cold shrinkage phenomenon.
(9) dehydration must be clean and thorough (at least three times the water cast, the middle of the dehydration once), in the absence of hot water supply on the industrial washing machine casting water is best to add a little steam to ensure that the contaminated water infiltrated into the fiber to be completely and thoroughly detached from the cloth, to protect the cleanliness and hygiene of the cloth towels, control the PH value in line with the safety value of human skin (6.5-7).
(10) neutralizing acid agent added in the last cast water, can neutralize the residual alkali, increase the brightness of the fabric, to prevent yellowing phenomenon, to maintain the service life of the fabric, and at the same time play a role in protecting the skin, inhibit the growth of microbial flora, this point must not be omitted.
(11) softener in the last cast water, can play a repair in the washing process by the mechanical wear and tear of fibers and rationalize the role of tissue structure, so that the fabric is more soft, comfortable, and can eliminate the adverse effects of static electricity on the human body.