Mold inserts compatible with Krones blow molding equipment

Micro-deformations of the mold cavity during repeated rapid heating and cooling cycles cause parting line misalignment or uneven cooling that triggers crystallization whitening, directly dragging down the appearance yield rate of cosmetic or beverage bottles.

The core of eliminating molding defects lies in the precise quantification of the mold shell substrate's thermal conductivity and cavity rigidity. By using a specifically proportioned aluminum alloy substrate, the thermal conductivity is stabilized in the 150-160 W/(m·K) range. This ensures a linear decay in the cooling rate of the PET melt as it passes through the glass transition temperature (approx. 80°C), thoroughly flattening out local hot spots inside the cavity. Simultaneously, the inner wall surface undergoes micro-arc oxidation (MAO) to generate a dense ceramic film. This not only locks the surface roughness within Ra 0.4 to avoid demolding scratches, but also uses the film's high hardness to support the thin-walled cavity structure, resisting the elastic deformation caused by up to 30bar blowing pressure, fundamentally cutting off the physical cause of parting line misalignment.

Mold shells and components adapted for blow molding, filling, and labeling production lines of brands such as Sidel, Krones, KHS, and Tetra Pak.

The cooling water channel interfaces utilize an error-proof quick-plug design, paired with high-temperature FKM seals, reducing assembly leakage rates to zero. Standardized mold base thickness and locating hole diameters eliminate the need for on-site milling and grinding, achieving seamless replacement. If you want to learn more about this product, please feel free to contact us for more information.

Sidel®,Tetra Pak®, Krones®, and KHS® are registered trademarks of their respective owners. Jihengfeng Precision Machinery (Shanghai) Co., Ltd. is an independent manufacturer and is not affiliated with, authorized, or endorsed by these companies.