Multilayer web plate with improved light-permeability

摘要: The novel multilayer web plate comprises two generally planar outer walls and webs joining said to form a unit construction. According the invention, each comprise combination of core layer representing more than half thickness wall comprised an extrudable, stiff plastic material with optical index refraction n≧1.48, inner surface layers adhesively bonded both faces hard n≦1.46. With this configuration, reflection losses transmitted light are avoided, light-permeability is substantially improved.