Spec: 4D*51mm
Breaking tenacity(cN/dtex): 3.6
Elongation at break(%): 43
Melting range(℃): 110
Defective fiber content(mg/kg): ≤200
Double length fiber content(mg/kg): ≤30
4D low melt PSF is a premium staple fiber specifically designed for nonwovens, composite materials, and industrial applications. With a denier of 4D, it offers a soft handfeel and excellent elasticity. Available in either 100% virgin polyester (Virgin PSF) or 100% recycled polyester (Recycled PSF), this fiber meets diverse environmental and cost requirements across products. The 4D fineness ensures uniform distribution during opening and web formation, facilitating seamless blending with other fibers to create stable fiber webs. Its low melting point guarantees reliable bonding and excellent thermal shrinkage performance during heat treatment processes.
Widely used in spray-bonded cotton, needle-punched cotton, thermally bonded composites, furniture batting, and nonwoven filling layers across industrial and home textile applications, it enhances material structural stability while maintaining a soft, fluffy feel. With its softness, excellent bonding properties, and stable heat shrinkage performance, 4D low melt PSF is the ideal choice for manufacturers seeking superior processing performance and high finished product stability.

