Generally laid scrims are about 20-40% thinner than woven products made from same yarn and with an identical construction.
Many European standards require for roofing membranes a minimum material coverage on both sides of the scrim. Laid scrims help to produce thinner products without having to accept decreased technical values. It is possible to save more than 20% of raw materials such as PVC or PVOH.
Only scrims permit production of a very thin symmetrical three layer roofing membrane (1.2mm) that is often used in Central Europe. Fabrics cannot be used for roofing membranes that are thinner than 1.5mm.
The structure of a laid scrim is less visible in the final product than the structure of woven materials. This results in a smoother and more even surface of the final product.
The smoother surface of final products containing laid scrims allows to weld or glue layers of the final products more easily and durably with each other.
The smoother surfaces will resist soiling longer and more persistently.
Post time: Jul-17-2020