After undergoing gentle processing, the surface fibers of polar fleece knitted fabric may become looser and softer. Such treatment can indeed increase the risk of pilling, as the loose fibers are more prone to friction during wear and washing, leading to their loosening, shedding, and forming pills.

Reasons Analysis:

Loose Fibers: Gentle processing causes the fibers of polar fleece knitted fabric to become looser and softer. While enhancing the fabric's softness and comfort, this treatment also increases the likelihood of fibers being loosened and shed through friction.

Friction and Wear: During daily wear and washing, friction with other objects and the fabric's own wear can cause the fibers to loosen. Friction becomes more intense, especially when the fabric is washed with other hard or rough garments.

Improper Washing: The use of strong detergents, stiff brushes, or high-temperature drying can exacerbate fiber shedding and pilling.

Solutions:

Separate Washing: Wash polar fleece knitted fabric separately from other hard or rough garments to reduce friction and wear.

Use Neutral Detergents: Choose mild neutral detergents to avoid using strong acidic or alkaline detergents, which can reduce fabric damage.

Hand Washing Preferred: If possible, hand washing is preferable. Hand washing can clean the fabric more gently, reducing mechanical friction.

Avoid High-Temperature Drying: Avoid using high-temperature dryers or direct sunlight to dry polar fleece fabric. It is best to air dry naturally and avoid direct sunlight exposure.

Regularly Remove Pills: If pilling is found, use a specialized pill trimmer to remove them. However, excessive use of trimmers may damage the fabric.

Choose High-Quality Fabric: When purchasing, choose high-quality polar fleece knitted fabric, which is usually processed more finely and has a lower risk of pilling.

Follow Washing Label Recommendations: Different brands and types of polar fleece fabrics may have different care requirements. Therefore, it is best to follow the washing label recommendations for cleaning and maintenance.