Patterned Spunbonded Nonwoven Sheet for Loft-Strength Balance

The patent applies local quality by creating distinct macroscopic regions with different fiber configurations within the nonwoven fabric. Some regions have higher fiber density and orientation (providing strength) while others have lower density (providing loft and softness). This spatial variation in fiber arrangement allows the fabric to simultaneously exhibit both high tensile strength and high loft characteristics that traditionally mutually exclude each other.

The patent segments the nonwoven fabric into multiple macroscopic regions with different compression states and fiber configurations. This segmentation allows the fabric to be shipped in a compact state while containing the potential to achieve high loft when activated. The different regions can be selectively activated to provide loft where needed while maintaining compactness in other areas, effectively resolving the contradiction between shipping volume and loft.

The patent implements local quality through controlled variation in fiber orientation across different macroscopic regions of the fabric. By deliberately creating regions with different fiber alignment characteristics, the fabric achieves balanced tensile strength in multiple directions. This controlled heterogeneity in fiber arrangement allows for improved mechanical performance without requiring overly complex manufacturing equipment, as the variation can be achieved through standard web formation and bonding processes.