According to the quality of the material and the texture of the surface material, the large core board can be divided into “excellent productsâ€, “first-class products†and “qualified productsâ€. Some enterprises also mark the grades of grades as A, double A and triple A, but this is only corporate behavior. There is no “3A grade†in the national standards. This kind of labeling is not allowed on the market. The core material of the large core board has many kinds of materials, such as poplar, birch, pine, paulownia, etc. Among them, poplar and birch are the best, the texture is dense, the wood is not soft and hard, the nail holding power is strong, and it is not easy to be deformed. The texture of Paulownia is soft, absorbs large water, and is not easy to dry. During the use of the plate, when the water evaporates, the plate is easy to dry and deform. The hard wood is hard, not easy to press, the splicing structure is not good, the nail holding power is poor, and the deformation coefficient is large.
The face material may be one or two layers of veneers respectively on both sides of the core, and may be classified into three layers of blockboard and five layers of blockboard, and the face materials are further divided into willows, eucalyptus and teak according to the tree species. Wait. The surface of the high-quality core board with good quality is smooth and smooth, and it is not easy to warp and deform. According to the sanding condition of the surface material, the board can be divided into two types: one light and two light.
PU Sheet is with excellent in anti-abrasion and high elasticity. There are different thickness and size. Their mainly function is to reduce pressure. Pu Sheet is widely used as Cushion, Anti-Pressing and Heavy Load parts.
Applications :
• Conveyor drive and idle rollers
• Hydraulic and pneumatic seals
• Bearing pads,rollers,gear wheels,bushes
• Conveyor belt scraping blades
• Printing rollers
• Cyclone nozzles
Key Features :
• High load bearing capacity
• More durable than conventional elastomers
• Width range of physical properties
• High impact resistance
• Low unlubricated coefficient of friction
• Good water resistance
• Resists cracking under repeated flexure
• Ramains flexible at very low temperatures
PU Sheet
Yellow Pu Sheet, Red Pu Sheet, Plastic Pu Sheet, Hard Polyurethane Pu Sheet
SHENZHEN XIONGYIHUA PLASTIC INSULATION LTD , http://www.xyhplastic.com