Can anti-static cleanroom esd cloth be reused?
Whether dust-free cloth can be reused depends on its material, manufacturing process and cleanliness requirements of the use scenario. The specific judgment is as follows:
1. Reusable situation
Material and process meet the standards
Dust-free cloth made of 100% polyester fiber or microfiber double weave, if there is no physical damage (such as fiber breakage, edge cracking), theoretically has the basis for reuse.
Edge sealing process is the key:
Laser edge sealing (high temperature melting edge sealing): not easy to fall off, can meet the reuse needs of most medium and high cleanliness scenarios (accounting for 75% of the market);
Ultrasonic edge sealing: soft edge without hardening, the cleanliness is the highest, but the cost is higher (accounting for 15% of the market).
Downgrade reuse scenario
After professional purification and cleaning (deionized water rinsing, neutral detergent treatment), high-grade dust-free cloth can be downgraded for use in environments with lower cleanliness requirements (such as Class 1,000 to Class 10,000 clean rooms).
For example: dust-free cloth used in semiconductor production lines can be used for ordinary electronic equipment maintenance after cleaning.
2. Non-reusable situations
Severe physical damage or contamination
If there is fiber shedding, holes, cracked edges, or contamination with chemical solvents, oil, or heavy metal ion residues, it must be discarded.
Ultra-clean scenarios (Class 10 and below)
Class 10/100 ultra-clean environments (such as photolithography workshops and high-end chip packaging) require the use of new ultrasonic edge-sealing dust-free cloths, and reuse is strictly prohibited.
Cold-cut edge-sealing dust-free cloths
The edges are rough and easy to fall off, so they are only used for wiping equipment with extremely low cleanliness requirements, and reuse is not recommended.