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Help CenterInjection Mold for Airtight Food Packaging Caps – OEM Custom, 24 Cavities, S136 Steel, Mass Production With Robotic Collection.
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Welcome to Changzhou Hongxinyutai Precision Mold Co., Ltd. – your trusted partner for high-precision injection molds. Our Injection mold for airtight food packaging caps is engineered to deliver exceptional sealing performance and production efficiency. As an OEM custom solution with 24 cavities and robust S136 steel construction, this mold is designed for mass production featuring automated robotic collection, ensuring consistent quality and reduced cycle times. With over 7 years of experience and a team of 51–100 skilled professionals, we provide reliable tooling solutions that meet the rigorous demands of the food packaging industry.
Product Highlights
- Superior Airtight Design: Precision-engineered cavity geometry and advanced cooling circuits guarantee a perfect seal for food caps, preserving freshness and preventing leaks.
- 24-Cavity High-Efficiency Layout: Maximize output with a balanced 24-cavity configuration, ideal for large-scale production without compromising part quality.
- S136 Steel Construction: Made from corrosion-resistant S136 stainless steel, offering excellent wear resistance and long mold life (typically 1,000,000+ shots).
- Robotic Collection Integration: Designed for seamless integration with automated robotic arms, enabling unattended operation, consistent part removal, and reduced labor costs.
- OEM Customization: Tailored to your cap design, including thread details, snap-fit features, and surface finish requirements.
- TS16969 Certified Quality: Our production processes follow strict quality management standards (TS16969), ensuring reliability and traceability.
Technical Specifications
| Mold Material | S136 (Stavax ESR) – hardened to HRC 48-52 |
| Cavity Count | 24 cavities (cold runner with balanced gate design) |
| Injection Machine Tie Bar Space | Customizable (typical 600mm x 600mm minimum) |
| Cycle Time | Approx. 8–12 seconds (depending on part geometry) |
| Mold Life | 1,000,000 – 2,000,000 cycles with proper maintenance |
| Cooling System | Conformal cooling channels for uniform temperature distribution |
| Ejection System | Hydraulic/mechanical ejection with robotic take-out compatibility |
| Standard | Manufactured under TS16969 quality system |
Detailed Product Description
Our injection mold is specifically designed for airtight food packaging caps, such as those used for sauces, spices, baby food, and beverage containers. The mold creates a precise snap-on or screw-on cap that forms an impermeable barrier, extending shelf life and preventing contamination. With 24 cavities, each cavity produces an identical high-quality cap, ensuring uniformity across every batch. The use of S136 steel (a premium stainless tool steel) provides excellent corrosion resistance against acidic food ingredients and withstands the thermal cycling of high-volume production.
The mold is equipped with automated robotic collection features. The ejection system is designed to release parts consistently, allowing a robotic arm to pick the caps without manual intervention. This reduces labor dependency and speeds up the production line. Additionally, the cooling system uses conformal cooling channels, which minimize warpage and shorten cycle times by up to 20% compared to conventional straight-line cooling.
We also offer full OEM customization: you can specify the cap diameter, thread pitch, wall thickness, side grips, and even integrate tamper-evident features. Our engineering team will optimize the gate location and flow analysis to guarantee filling balance. After mold trials, we provide sample parts for sealing performance testing.
Key benefits for your business:
- Reduced Total Cost of Ownership: Durable S136 steel and optimized design lower maintenance frequency and increase mold longevity.
- Faster Return on Investment: The 24-cavity layout doubles or triples output compared to 8-cavity molds, boosting daily part count significantly.
- Consistent Quality: Robotic handling eliminates human errors during part removal, reducing defects and rework.
- Easy Integration: Standardized interface allows connection with most injection molding machines from 180 to 350 tons.
Our factory in Changzhou, Jiangsu, China covers 1,000-3,000 square meters and employs 51-100 skilled technicians. We have exported molds to over 15 countries, including North America, Europe, Southeast Asia, and Oceania. Our port of shipment is flexible: Jiangsu, Shanghai, or Shenzhen.
Why Choose Changzhou Hongxinyutai Precision Mold Co., Ltd.?
Since 2017, we have focused on precision injection mold manufacturing. We hold TS16969 certification, which means our quality management system is audited and approved for automotive-grade precision – a standard that directly benefits food packaging molds by ensuring tight tolerances and process control. Our team has completed over 300 mold projects for food cap applications. We use advanced CNC machining, EDM, and CMM inspection to guarantee accuracy down to ±0.01mm.
We offer comprehensive after-sales support including mold commissioning, training for technicians, and spare parts supply. Our typical delivery time is 30-45 days depending on complexity. We welcome sample testing before mass production.
Contact us today to discuss your specific cap design. Let us provide a tailored mold solution that enhances your production efficiency and product quality.
Frequently Asked Questions
Q1: Can you make molds for caps with tamper-evident rings?
A: Yes, our mold can incorporate slide actions to form tamper-evident bridges. We have experience designing multi-component caps.
Q2: What is the minimum order quantity for this mold?
A: We accept single mold orders. However, for large production runs, we recommend ordering additional interchangeable cavity inserts to minimize downtime.
Q3: How do you ensure the airtight performance of the caps?
A: We optimize the cap design with proper sealing geometry and perform leak tests using vacuum or pressure decay testing on sample parts.
Q4: Can the mold be used on existing injection machines without modification?
A: Yes, we design the mold with standard clamping and locating ring dimensions. We will require your machine specs to ensure compatibility.
Q5: What payment terms do you offer?
A: Typically 30% deposit with order, 70% before shipment. T/T, L/C are accepted. Custom terms negotiable for long-term partners.
Q6: Do you provide training for mold maintenance?
A: Yes, we offer on-site or remote training for your maintenance team, covering disassembly, cleaning, lubrication, and storage.
Q7: How long does it take to produce the first sample?
A: Sample preparation usually takes 4-6 weeks after mold design approval. We can expedite for urgent projects.
Q8: What is the warranty period?
A: We provide a 12-month warranty from shipment date covering manufacturing defects. Extended support is available.
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