UHMWPE sheet molding affected by temperature
UHMWPE sheet , also known as low-pressure high-density polyethylene sheet, belongs to a thermoplastic resin with high crystallinity and non polarity. Is the molding of UHMWPE sheet affected by temperature? I believe many users are concerned about this issue, so I will give you a detailed introduction next.
The temperature during the molding of UHMWPE sheet has a significant impact on the quality of the product. We should pay attention to controlling the temperature in the middle of the mold to be slightly lower than the temperature at both ends, and having uniform and stable temperature conditions to assist. The distance between the mold lips is equal to or slightly less than the thickness of the polyethylene sheet, and a uniform and stable temperature ensures that the flow rate of the extruded melt is stable and equal, so as to minimize the longitudinal thickness error value of the sheet. The temperature control of the forming mold should be stable, and whether the temperature is too high or too low will affect the flow rate of the molten material, so that the thickness error of the formed ultra-high molecular weight polyethylene sheet will be greater.