High-quality monofilament polyester mesh is the most suitable mesh fabric. It is round and smooth with superior elongation and strength characteristics. It has no loss of strength when wet and, in fact, absorbs less than 0.8%moisture.The polyester mesh has several superior properties such as resistance to solvent, high temperature, water, chemicals etc. Also, when acted upon by severe external pressure, its physical performance is stable and stretch ability is low.
Thanks to its dimensional stability, polyester mesh screen printing is
suitable for applications, where critical control of registration is required such as printing on printed circuit boards (PCB).
Nylon absorbs up to 5% moisture and loses 10-20% of its strength when wet and elongates 26-40% before breaking, while polyester elongates much lesser 19-23%. However nylon mesh is large stretch ability and low tension retaining capacity. Therefore, after a period of time, the net stretch will reduce and make the screen plate flabby leading to decline in the level of precision. Therefore, it’s not suitable for printing on PCB.
Polyester absorbs color faster than nylon because it has the same properties, making it better to absorb water. The dyed polyester drains the water from the dye, but the dye itself does not bind to the fibers. Nylon absorbs moisture, resulting in less dye adhesion to the fibers.
Whether polyester mesh screen printing or nylon printing mesh, they all have their own characteristics. The material choose depends on the specific application. For specific applications, choose nylon or polyester, please consult MAISHI MFG. GROUP