Background technique: Dust-free cloth is a kind of chem […]
Background technique:
Dust-free cloth is a kind of chemical cloth widely used in electro-optical medical semiconductor equipment. It has high requirements for its own cleanliness and absorbency. To achieve a "dust-free" effect, it is necessary to reduce product dust particles as much as possible Release amount, release amount of corrosive ions and release amount of non-volatile residues. Up to now, the cleaning method of ultra-fine fiber dust-free cloth is to wash the dust-free cloth with tap water and then directly wash it with ultrapure water, or use tap water or RO water. , Ultra-pure water three-stage progressive cleaning. This cleaning method is suitable for ordinary polyester cloth that is easy to clean, but it is difficult to apply to the more commonly used ultra-fine polyester-nylon composite dust-free cloth, and it cannot meet the requirements of dust removal and separation. If it is used without Wiping the electro-optical medical semiconductor equipment with a clean dust-free cloth will cause damage or even damage to it, seriously threatening the safety of related equipment.
Summary of the invention:
The technical problem to be solved by the present invention is to provide a method that can effectively remove contaminated dust particles and ions on the ultrafine fiber dust-free wiping cloth.
In order to solve the above technical problems, the present invention adopts the following technical solutions: A dust-free cloth dust-removing and ion-removing method, which is characterized in that it includes the following steps "
1. Heat pure water with a resistance value of 16MQ-18.2MQ to 50-100°C, and add degreaser or dust remover during the period.
2. Put the used dust-free cloth into the above-mentioned heated pure water and soak for 30-60 minutes, where the bath ratio of the dust-free cloth and pure water is 1:10-40;
3. Remove the dust-free cloth from the aforementioned hot water, and wash it with pure water at room temperature with a resistance value of 16MQ-118MQ and a bath ratio of 1:10 for one time.
4. The dust-free cloth obtained in step 4 is transferred to the washing machine for washing, and it is washed for 3 cycles according to the following procedure.
a. Adjust the bath ratio of the washing machine to 1:40;
b. Use standard cleaning methods to clean for 5 minutes:
c. Dehydrate the cleaned dust-free cloth at high speed.
d. Transfer the dust-free cloth in step 4 to a dust-free drying machine for cleaning and drying.
Through the above method, the present invention adopts the cleaning method of thermal extraction, which effectively solves the problem of removing polluted ions from the ultrafine fiber dust-free cloth, can effectively eliminate the pollution particles and related ions on the surface of the dust-free cloth, and maximize the protection of related ions. Compared with the traditional cleaning method, this method has the characteristics of simple operation, strong decontamination ability and low cost.
