Precision From
Concept to Mold
Every Jindong mold is the result of a rigorous 9-step manufacturing process -- from precision blueprint drafting to seaworthy export packaging. Our technology pipeline ensures zero compromise on quality, consistency, or durability.
Concept & Bottle Design
From theoretical concept to optimized preform and bottle manufacturing.
This stage transforms ideas into detailed 3D models for both preforms and final bottles. We calculate essential metrics like nominal capacity and exact material distribution to meet all functional needs.
We optimize ergonomic bottle shapes alongside precise preform weight and PCO 1810 neck finishes. This dual-focus expertise ensures your design is structurally sound for stable, high-yield production.
Engineering & Mold Flow Analysis
Simulating injection and blowing processes to eliminate potential defects.
The 3D models are split into mold components. Simulation software is then used to predict the plastic injection behavior for preforms and the stretching behavior for blow molding.
We precisely match your blow molding machine and injection system parameters. Advanced simulation calculates optimal cooling channels, ensuring uniform wall thickness and eliminating common defects before any steel is cut.
Material Preparation
Sourcing premium certified metals to guarantee extreme durability.
Selecting and cutting raw metal blocks for mold bases, cavities, and cores according to the strict engineering specifications required for both injection and blow molds.
We exclusively use premium S136 stainless steel for preform molds and high-grade 7075 aviation aluminum for blow molds, laying a solid foundation for a technical life of more than 6 million cycles.
CNC Machining
High-speed precision milling for exact dimensional accuracy.
Utilizing multi-axis CNC centers to carve out primary shapes, from complex bottle cavities to highly precise preform hot runner plates and internal cooling channels.
Strict tolerance controls during high-speed milling ensure absolute consistency across multi-cavity preform molds and rotary blow molds, critical for continuous, high-speed PET production lines.
Surface Treatment & Polishing
Enhancing durability and achieving a flawless surface finish for supreme clarity.
This combined process applies targeted thermal/surface modifications alongside meticulous polishing. We perform deep hard anodizing on rotary blow molds, and standard vacuum heat treatment for steel preform molds (with optional TiN plating). Finally, manual and diamond polishing techniques are applied to achieve the ultimate surface smoothness.
Standard vacuum hardening and optional nano-titanium plating ensure preform molds resist extreme pressure and scratching, while mirror-level polishing guarantees supreme PET clarity. For blow molds, hard anodizing drastically upgrades durability, and customized surface polishing ensures the fastest possible bottle drop.
Laser Marking & Encoding
Permanent precision engraving for effortless traceability and maintenance.
Before final assembly, high-precision fiber lasers are used to engrave essential identification details onto individual mold components. Critical data such as nominal capacity, preform weight, cavity numbers, and specific part codes are permanently marked on the metal.
Clear, permanent marking eliminates guesswork during production changeovers or routine maintenance. By precisely engraving specs directly onto the mold components, we guarantee foolproof assembly, easy spare parts tracking, and highly efficient daily operations for your production team.
Assembly & Quality Inspection
Seamless assembly and CMM verification to guarantee zero-defect trials.
Senior technicians assemble all machined components—including cooling channels, sliders, and cores. The fully assembled units then undergo comprehensive inspection using precision measuring tools to verify exact alignment with the 3D blueprints.
We combine zero-friction seamless assembly with strict CMM testing and high-pressure fluid checks. Every mold guarantees smooth mechanical action, precise closure, and completely leakage-free cooling systems for your peace of mind.
Mold Trial & Validation
Real-world testing to guarantee perfect production from day one.
Mounting the molds onto their respective injection or blow molding machines to conduct rigorous test runs, simulating actual mass production environments to verify performance.
Molds are tested on high-performance machinery. We fine-tune settings, verify smooth ejection, and provide physical samples alongside a comprehensive T1 optimization report.
Packaging & Delivery
Secure packaging designed to protect your precision assets during transit.
Applying anti-rust protection and securing the heavy precision molds into export-standard wooden cases for safe land, sea, or air international shipping.
By strictly executing anti-rust treatments and rigid mechanical fixation within sturdy cases, we guarantee your molds arrive safely, completely free of moisture damage or transit impacts, ready for immediate installation.
Start Your Project
With Precision
Connect directly with our technical team. Get factory-direct pricing for S136 molds and comprehensive manufacturing support without middleman delays.