What is Needle Punched Nonwoven?

Update: 2022-09-17

Needle-punched non-woven fabric is a kind of dry-laid non-woven fabric. Short fibers are opened, combed, and laid into a fiber web, and then the fiber web is reinforced into a cloth by a felting needle. The needle has a barb, and the fiber web is repeatedly punctured. , Hook belt fiber reinforcement, forming acupuncture non-woven fabric, non-woven fabric has no warp and weft points, the fabric fibers are messy, and the warp and weft properties are not very different. Typical products: synthetic leather base fabric, needle-punched geotextile, etc.
The principle is to use the barbed barbs on the edge of the triangular section (or other sections) to repeatedly puncture the fiber web. As the barbs pass through the web, the surface and local inner fibers of the web are forced into the interior of the web. Due to the friction between the fibers, the originally fluffy web is compressed. When the needles exit the web, the pierced fiber bundles break away from the barbs and remain in the web, so that many fiber bundles are entangled in the web and can no longer be restored to its original fluffy state. After many times of needling, a considerable number of fiber bundles are stabbed into the fiber web, so that the fibers in the fiber web are entangled with each other, thereby forming a needle-punched nonwoven material with a certain strength and thickness 

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