Does recycled cotton have any requirements for the water temperature when washing?

Recycled cotton has clear limitations on cleaning water temperature, mainly due to the sensitivity of its fiber structure. Here are the specific points:

1. Upper limit control of water temperature
Regenerated cotton fibers will begin to soften when the temperature exceeds 35 ℃, and above 40 ℃, it will cause fiber expansion and fracture. High temperature can damage the molecular chain structure and cause irreversible damage to clothing. Daily cleaning requires strict control of water temperature within 30 ℃, and cold water close to room temperature is safer.

2. Risks of high-temperature cleaning
Shrinkage and deformation: Excessive water temperature can accelerate fiber shrinkage, and after multiple high-temperature washes, clothing patterns are prone to relaxation and twisted seams.
Strength reduction: After fiber expansion, the wear resistance decreases, and repeated friction can lead to pilling and even holes.
Fading intensifies: Dyes have poor stability at high temperatures, especially for dark colored clothing where fading is more pronounced.

3. Advantages of Cold Water Cleaning
Protecting fiber elasticity: Cold water can maintain the flexibility of recycled cotton and reduce stretching deformation during washing.
Color locking and shape protection: Low temperature prevents dye from dissolving and prevents fiber relaxation, helping to maintain the original appearance of the clothing.
Energy saving and environmental protection: No need to heat the water source, reducing energy consumption.

4. Precautions for supporting operations
Do not soak in hot water: Even if the area is partially cleaned, avoid rinsing directly with hot water to prevent local fiber damage.
Dehydration should be gentle: If using a washing machine, choose low-speed dehydration mode (such as below 800 revolutions per minute), high-speed centrifugal force will tear wet fibers.
Wash separately from other fabrics: avoid being affected by high temperatures of other fabrics during mixed washing, and prevent dyeing and mutual dyeing.