Fluffiness: After the expansion process, polypropylene bulk yarn exhibits high loftiness, with numerous air gaps between the fibers, resulting in a soft texture and excellent thermal insulation properties. For example, thermal garments made from polypropylene bulk yarn effectively block cold air intrusion while minimizing body heat loss.

Elasticity: Polypropylene inherently possesses a degree of elasticity, and the unique structure of bulk yarn further enhances this property. When subjected to external stretching, polypropylene bulk yarn quickly recovers its original shape, resisting deformation. This ensures that fabrics or products made from it maintain good dimensional stability and durability.

Abrasion Resistance: Polypropylene has strong wear resistance, and polypropylene bulk yarn inherits this advantage. It resists wear and breakage during use, withstanding a certain degree of friction and pulling.