New design double-sided field tray plastic injection mold
Plastic tray forming processing characteristics
According to the different use and type of plastic tray, can be hollow molding, ordinary injection molding, injection compression transfer molding, gas-assisted injection molding, die casting molding and other molding processing. Plastic tray is a large area, large quality of large plastic crystal, projection area between 0.8m2-1.8m2, mass between LOkg-40kg, so generally use special tray molding machine molding processing:
1, hollow molding plastic tray raw material is generally HMWHDPE, can add 30% of the return. Suitable for forming simple shapes. Stiffness requirements are not high tray. Mold cost offset, less investment. Product quality, consumption: more flying edge, about 30% of the product quality. Therefore, the post-processing work of products is large, and the crushing work of flying edge is large. The molding cycle is long and the productivity is low. The equipment must have high enough plasticizing capacity to shorten the molding cycle. Chilled water must be used for product cooling to improve product quality and productivity. The forming process is similar to the box and bag forming process, which is simpler than orange hollow products forming process.
2. Squeeze and cut hollow molding plastic tray can be molded into general large squeeze and blow hollow molding machine to reduce investment cost.
3, injection pressure blowing plastic tray, this is a novel hollow molding technology. The advanced structure of large capacity plasticizing injection on injection molding machine replaces the extrusion plasticizing structure of extrusion blowing and hollow molding machine. Injection pressure blowing hollow molding can improve the quality repetition precision of the billet, improve the shape precision of the billet, the output can be increased by 30%, the energy consumption can be reduced by 30%. Plasticizing ability can be increased by 20%, melt strength is high, is a high-performance hollow molding technology.