Non-Woven Core Mat (LANTOR)
Non-woven cores are chemically bonded materials impregnated with micro-spheres. These materials produce laminates with high stiffness to weight ratios and high impact and shear resistance.
They are easy to use, with excellent drapability and conformability and are compatible with most unsaturated polyester resin systems.
A secondary advantage of these materials is the prevention of print-through, which is achieved due to improved resin distribution and lack of shrinkage in the core material.
- Coremat saves weight
Coremat as a core material is used in the center of a laminate. Impregnated Coremat has a density of 610 kg/m3 (38 lb/ft2), while Impregnated Chopped Strand Mat has a density of 1,500 kg/m3 (94 lb/ft3). This is a weight saving of 60%.
- Coremat saves resin and glass
1 mm (0.039 inch) of Coremat contains 0.6 kg/m2 (2.0 oz/ft2) while 1 mm (0.039 inch) of CSM contains 1 kg/m2 (3.31 oz/ft2). Although Coremat usually replaces glass layers, it should always be used between glass layers.
- Coremat saves labor
One layer of Coremat builds up thickness rapidly. Coremat is 1 to 10 mm (0.04-0.39 inch) thick. While multiple layers of glass fiber are required to achieve these greater thicknesses, One layer of Coremat is sufficient.
- Coremat is an excellent print blocker
Coremat can be used to block “print-through” of glass reinforcements and cores, especially when dark gelcoat surface finishes are used. Coremat is most often applied against the “skin coat” to create a superior surface finish on hull sides.