Material selection defines mold longevity, and an S136 preform mold delivers exceptional corrosion resistance and polishability for food packaging.
Premium Stainless Steel Construction
All cavity and core steel in an S136 preform mold is purchased from certified Swedish-origin S136. This electro-slag-remelted stainless grade offers a uniform microstructure that polishes to the highest optical standards, essential for medical-grade preforms that must pass strict visual inspection.
Superior Corrosion Resistance
Running rPET or molds in high-humidity environments risks rust. An S136 preform mold is inherently immune to the weak acids formed during PET processing and from water corrosion. You can run this mold for millions of cycles with no pitting or rust spots, preserving the pristine cavity surface.
Excellent Thermal Fatigue Life
The S136 steel in this mold withstands the thermal cycling from 280°C at the gate to 10°C in the cooling channels without developing heat-checking cracks. This resistance means that an S136 preform mold can maintain its dimensional accuracy for up to 15 million cycles, significantly outlasting conventional tool steel.
Hypoallergenic and FDA Compliance
Because there is no risk of iron oxide contamination from an S136 preform mold, it is ideal for preforms used in food packaging. The steel is fully traceable and certified, giving your quality assurance department and your customers complete confidence in the safety of the containers.
Technical Expertise in Injection Molding Preform Molds
Our injection molding preform molds are engineered for precision, reliability, and high-efficiency PET production. Every mold is designed using advanced CAD/CAM software and manufactured with CNC machining to achieve tight dimensional tolerances. We incorporate optimized hot runner systems to ensure uniform material distribution, while precision cooling channels minimize cycle time and prevent uneven shrinkage or warping.
The molds are constructed from high-grade steel with specialized heat treatment, providing exceptional wear resistance and long operational life. Each cavity is polished to improve surface finish, reducing friction and enhancing preform transparency. Our modular design allows for quick maintenance and alignment adjustments, supporting both single-stage and multi-cavity configurations.
Payment
Our standard payment terms are:
40% T/T down payment before production
60% T/T balance payment one week before shipment
Specific payment terms can be adjusted according to project scale and cooperation conditions.
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