Study on the influence of fiber arrangement on the strength of non-woven interlining

1. Relationship between fiber arrangement and contact area
Non-woven interlining is a thin sheet material formed by randomly or directional fibers bonded to each other by mechanical, chemical or thermal bonding. The arrangement of fibers directly determines the contact area between fibers. When the fibers are arranged neatly and tightly, the contact points between adjacent fibers increase, and the contact area expands accordingly. This structural change provides more opportunities and stronger connection points for the interaction between fibers. The interaction forces between fibers, including friction, adhesion and mechanical locking, are the basis for the overall strength of non-woven interlining. Therefore, increasing the contact area can directly enhance these interaction forces, thereby improving the overall strength of the material.

2. Improvement of tensile and tear resistance
Neatly arranged fibers not only increase the contact area between fibers, but also optimize the mechanical structure of the fiber network. When the non-woven interlining is subjected to tensile or tearing external forces, the tightly arranged fiber network can more effectively disperse and resist these external forces. The interaction force between fibers is like an invisible net, which evenly transmits external forces to the entire material, avoiding material rupture caused by local stress concentration. In addition, the tightly arranged fibers reduce the gaps, making it more difficult for external forces to penetrate the material, further improving the tensile and tear resistance of the non-woven interlining. This structural optimization allows the non-woven interlining to show higher strength and toughness when subjected to external forces.

3. Enhanced stability and deformation resistance
In addition to strength and toughness, neatly arranged fibers can also give non-woven interlinings better stability. Stability refers to the ability of a material to maintain its original shape and size when subjected to external forces. In non-woven interlinings, the neat arrangement of fibers reduces the relative sliding and dislocation between fibers, allowing the material to maintain structural integrity when subjected to force. This means that whether it is long-term load or sudden external force impact, neatly arranged non-woven interlinings can effectively resist deformation and rupture, maintaining their functionality and aesthetics. This feature is particularly important for applications such as clothing linings and automotive interiors that have high requirements for dimensional stability and shape retention.

4. Significance in practical applications
Neat and tight fiber arrangement is of great significance for improving the overall performance of non-woven interlinings. In the medical and health field, high-strength, non-deformable non-woven interlinings can provide a better protective barrier, effectively blocking the penetration of bacteria, viruses and other microorganisms, and ensuring the safety of medical staff and patients. In the home decoration and automotive industries, stable non-woven interlinings can enhance the durability and comfort of products, satisfying consumers' dual pursuit of quality and beauty. In addition, with the increase of environmental awareness, using renewable fibers and improving the strength and stability of non-woven interlinings by optimizing the arrangement method is also an important direction for the sustainable development of the textile industry in the future.