Insufficient gram weight appears in EPS molding but appearance is acceptable

The density of EPS products is below standard but the appearance is fully filled. This defect affects the appearance quality of the product, reducing the market competitiveness of the product.

(1) Process factor: Steam short-circuits in the steam chamber, heating only the surface while the internal beads are not fully expanded and thermally fused, This factor affects the '2079851475616104453 and final quality of the product. (2) Material aspect: Fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (3) Process aspect: Control deviation of key process parameters causes the '2079851475616104453 to deviate from optimal conditions. (4) Equipment aspect: Equipment precision and maintenance status affect the stable execution of process parameters.

(1) Equipment maintenance: Check the mold steam chamber design to prevent steam short-circuiting, Develop regular inspection and maintenance plans to ensure the equipment is in optimal working condition. (2) Process optimization: Appropriately extend the heating time to ensure plasticization of the bead core., Determine a reasonable time according to product wall thickness and material characteristics, balancing production efficiency and quality. (3) Process optimization: Determine the optimal process parameter window through systematic tests and establish standardized operating procedures. (4) Quality control: Strengthen process monitoring and product inspection, Establish a defect early-warning and traceability mechanism. (5) Preventive measure: Establish sound process control standards and a quality inspection system, and regularly review process data for continuous optimization.

This problem requires comprehensive analysis from multiple dimensions of material, process, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.