IXPE foam sheet (lrradiation cross-linked polyethylene) is a low density polyethylene foam that undergoes an electronic irradiation transformation to an independent atom-mesh bubble structure, which is a continuous foaming material, It has a smooth surface a closed-cell structure, well-distributed No water absorption, Unlimited length, adjustable color and density Soft foaming material, the performance is better compared with other foam material. Especially for heat preservation, weather ability, age resistance, shock absorption, cushioning, flexibility, water and moisture resistance, sound insulation, and environmental protection. This material is commonly used as flooring underlayment and can be combined with aluminum foil, aluminum fim, or other materials. It has more delicate cellular, more smooth and flat surfaceand more excellent mechanical performance.