Continuous Compression Molding Technology Upgrades PET Cap Production Quality & Consistency
Continuous compression molding (CCM) technology has been widely upgraded in the plastic closure industry, comprehensively improving the dimensional accuracy, surface finish and structural stability of standard and tethered PET bottle caps. Compared with traditional intermittent injection molding, the advanced compression process features uniform material melting, low internal stress and ultra-precise cavity filling, effectively solving common defects such as cap deformation, thread deviation and seal unevenness.
The optimized production system supports high-speed continuous operation, greatly improving finished product consistency while lowering defective rates. The whole process adopts low-residual molding formula and food-grade clean production standards, which perfectly matches food and beverage safety requirements. Meanwhile, the process adapts well to recycled PET and mixed environmentally friendly materials, maintaining stable physical properties of caps while meeting circular economy standards.
Industry insiders indicate that compression molding will gradually become the mainstream process for high-end bottle cap production in the next two years, further standardizing PET packaging accessory quality and boosting the overall industrial upgrading of preforms, caps and handles.
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