Why Do Rotomolded Products Need To Be Surface Baked Before Packaging?
The purpose of roasting the surface of rotomolded products is to improve the surface gloss, reduce surface pores, and make the scratches and burrs after trimming the mold closing seam round. After roasting, the surface quality of rotomolded products is significantly improved, as shown in the following:
1.Improve surface gloss: Baking can make the surface of rotational molded products smoother, increase the gloss, and make the appearance more beautiful.
2.Reducing surface pores: By roasting, the pores on the surface of the product can be eliminated or reduced, improving the compactness and overall quality of the product.
3.Smooth the scratches and burrs after trimming the mold closing seam: Fire treatment can round the scratches and burrs after trimming the mold closing seam, reduce sharp parts, and improve the safety and aesthetics of the product.
Technical details and precautions for roasting:
In the rotational molding process, baking is also a link that requires technical control. Since local defects on the inner surface of the mold may cause the polyethylene melt to flow in and form bonds, it is very important to coat the inner surface of the mold with a layer of thermally stable material to prevent adhesion2. In addition, attention needs to be paid to controlling the temperature during the heating stage to avoid scorching of materials and ensure product quality.