Filling material for car seats is given preset thickness through needling and heat treatment

摘要

The fibre filament forming the material are partially entangled (1) with each other in the needling process. The fibre filaments comprise a crimped fibre filament (3), a potential crimped fibre filament (4) and a binding fibre filament. They are connected through the heat treatment process, and the potential crimped fibre filament is crimped.