Bottle molds compatible with Krones blow molding equipment

Machining deviations of the pinch-off line in the neck mold area cause thread flash on the bottle mouth or imprecise snapping of the tamper-evident ring bridges, directly resulting in seal failure and leakage during subsequent filling and capping.

The core of eliminating this hidden danger lies in the ultimate control of neck micro-geometry and shear mechanics. In the neck molding area, the radial and axial tolerances of the threaded cavity are dead-locked within a micron-level range of 0.01mm, ensuring zero air leakage on the melt-fit surface with the preform thread. For the connecting bridges at the bottom of the tamper-evident ring, we use a specific micro-milling tool path to precisely set their cross-sectional thickness between 0.3-0.4mm. This physical definition of geometric dimensions ensures that when standard capping torque is applied, the shear stress is 100% concentrated on the pre-set break points. It produces no burrs to hinder capping, nor does it break prematurely during transport vibration, fundamentally guaranteeing the linear input of capping torque and the absolute compression of the sealing ring.

Molds and replacement parts adapted for blow molding machines and filling lines of brands such as Krones, Sidel, KHS, and Tetra Pak.

In terms of wear protection, the neck insert surface is coated with a 2-3μm thick TiN (Titanium Nitride) or DLC (Diamond-Like Carbon) hard coating. This nano-scale surface modification not only increases the microhardness to over HV2000, but also reduces the friction coefficient of the thread engagement surface by 60%. This allows it to tightly hold the initial micron-level tolerances without decay, even after millions of capping and decapping mechanical frictions, exponentially extending the wear life of the expensive inserts. 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.