The Point bond processes start with the extrusion of yarn directly from a melted solution of polypropylene chips. These fine denier yarns are drawn, chilled and laid in a random pattern onto a conveyor belt. They are bonded together at selective cross-over points to create the non-woven fabric.
The point bonding process produces a fabric with greater stretch (elongation), creating a fabric with more toughness, ounce per ounce than that of a Flat bond process.
For the reason that was explained above each fabric is heavier than its predecessor providing more fibers in the cross section. The increased fiber distribution has several concurrent advantages such as balancing fabric weight to performance and costs.
More fibers produce a more solid product, blocking more light. Another advantage to having a thicker fibered fabric is there are more fibers per square yard to make a heavier fabric stronger, stiffer, and allows less light through. Also the darker the fiber the less light transmission will be able to penetrate or pass through.
* Please note that the gray picture is magnified 100 times closer than black.
