Barking (Napping and Roughening) is the only way for XPS Insulation Board to remove stress completely. No barking or barking incomplete will cause insulation board inside of wall suffering the impact solar radiation or ambient environment.
Milling machine is by far the world-acknowledged mature equipment for insulation board to remove stress completely. As leading company in producing this kind of milling machine which contains single and double side milling in structure, and can process three types of 600mm, 900mm, and 1200mm in width, there are various types of board could be processed, such as plaining, embossing and Grooving, etc.