LAMINATES
LAMINATES
Laminates are made of layered carrier material soaked in thermosetting resin which is pressed under temperature and pressure to form solid semi-finished products. Rods and tubes are coiled and then compression-molded.
These composite plastics were already developed at the beginning of the last century and were used for a long time instead of thermoplastics in various technical applications.
Due to the layered carrier materials, the laminates have different properties parallel and perpendicular to the layers, depending on the type of carrier material and resin. The mechanical strength, for example, is clearly higher in parallel than perpendicular to the layers.
Accordingly, the layering has a great impact on the component design. Certain geometries with multiple mechanical loads are either not possible at all or only possible through complex redesign. Gear wheels, for example, must always be manufactured of sheet goods. The use of coiled and pressed round bars is not possible, as the material would peel off when the tooth flanks are loaded.
The carrier materials used are paper (cellulose paper = CP), cotton fabric (cotton carpet = CC), glass fabric (glass carpet = GC), glass fleece or glass mats (glass mat = GM) and wood veneer (WV) . The resins used are made of epoxy (EP), melamine (MF), phenol (PF), polyester (UP) or polyimide (PI).
POLYTRON Kunststofftechnik offers laminates made of the following substrates
- cotton fabric (CC)
- glass fabric (GC)
- paper (CP)
- wood veneer (WV)
Information about the available laminates semi-finished products can be found here!