Trespa plate is made by compressing impregnated paper or wood fibres and epoxy, phenolic or polypropylene resin at high pressure and high temperature. A special surface made with Electronic Beam Curing, a coating technique developed by Trespa, ensures durability and scratch resistance.
Due to the ability to add colored pigments to the surface during curing, a variety of colors is possible. The production technique for the plates, which are made of wood, is also called "Dry Forming' technology. In this technique, cheaper pre-pregs instead of the more expensive impregnated paper layers in the production of fiber boards is applied. These prepregs consist of wood fibers and thermosetting resins.
This technique was applied for the first time in 1984. Because the surface of Trespa Plate has a dense molecular coating, it is virtually impervious to weather (temperature, UV radiation and humidity). Also, any contamination, such as graffiti, can be removed quite easily. Because of these advantages, the material has been popular since the 1980s in the production of laboratory surfaces and outdoor signage, but also for shower stalls and toilet cubicles in educational, hospital, and campground facilities.
Source: Wikipedia
Read about other materials used by Jacobs Joinery in Bespoke Joinery