PP core double-layer short-cut fiber sandwich felt is made of two layers of glass fiber short-cut felt using polyester yarn and PP core sewn together according to the core structure. The material is suitable for unsaturated polyester, vinyl and epoxy resins, and is widely used in shipbuilding, wind energy, automotive, rail transit components, flat panels, etc. It is suitable for molding processes such as RTM, vacuum introduction and hand gluing. Basic data Specification Mass (g/m2) Short cut layer/short cut layer (g/m2) Core layer PP (g/m2) Moisture content (%) Soaking speed (≤s) EMNM300/180/300 780 300/300 180 ≤0.2 ≤6

PP core biaxially sewn sandwich felts (0° and 90°) are combined with an intermediate layer of PP core material, plus a layer of short-cut fibers, sewn together in a sandwich design. It is compatible with polyester, vinyl and epoxy resins and is widely used in ship building, wind energy, automotive, train components, storage tanks, etc. It is suitable for RTM, vacuum injection, and hand lay-up molding processes. Basic data Specification Mass (g/m2) Warp knitted fabric (g/m2) Sandwich PP (g/m2) Short cut layer (g/m2) Moisture content % Soaking speed (≤S) ELTNM600/180/150 930 600 180 15