Can recycled cotton be tumble dried at high temperatures?

Recycle cotton products are strictly prohibited from being dried at high temperatures, as thermal effects can cause irreversible damage to their structure. The following are the key points:

1. High temperature direct damage mechanism
Fiber brittleness: After recycling, the crystallinity of recycle cotton fibers decreases. When the drying temperature exceeds 50 ℃, residual moisture evaporates rapidly, causing fiber shrinkage and brittleness.
Adhesive failure: Recycled cotton products often contain adhesive glue (such as starch slurry), which will pulverize and peel off after high-temperature baking, causing cracking and disintegration.

2. Specific manifestations of damage
Uncontrolled shrinkage rate: The longitudinal shrinkage rate can reach more than twice that of native cotton, and clothing shrinkage and blanket edge twisting cannot be restored.
Hardened board structure: The fibers become stiff like cardboard after losing elasticity, with a rough texture and loss of moisture absorption and breathability.
Color decay: Dye thermal migration causes the color to turn gray and white, resulting in color contamination at the joints.

3. Safe drying plan
Natural shade drying: Lay or hang in a ventilated and dark place, intermittently flip over to avoid mold spots.
Watering technique: After cleaning, roll a towel and squeeze it to absorb water, avoiding twisting to prevent fiber breakage.
Low temperature assistance: In case of emergency, the temperature controlled hair dryer (cold air blocking+30cm distance) can be used for local brushing.

4. Absolute taboo scenarios
Disable drum dryer: Even in "low temperature mode", the actual temperature still exceeds the safe threshold.
Stay away from heat sources: Radiant heat sources such as radiators and baking lamps can cause localized carbonization.
Refusal to iron: Steam iron will immediately produce hard wrinkles upon high temperature contact.