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Help CenterOEM Food Packaging Cap Injection Mold: 24-cavity Hot Runner, Hardened S136 Steel, Glossy Finish, 300K Cycles, PP Material.
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At Changzhou Hongxinyutai Precision Mold Co., Ltd., established in 2017, we specialize in delivering high-performance injection molds tailored for the food packaging industry. Our OEM food packaging cap injection mold, featuring a 24-cavity hot runner design, is engineered to maximize productivity while maintaining exceptional part quality. With a core made from hardened S136 stainless steel and a glossy mirror finish, this mold ensures smooth ejection, corrosion resistance, and a premium surface appearance for PP caps. Trusted by clients across North America, South America, Europe, and Asia, our molds are backed by TS16969 certification and a 1,000–3,000 m² factory with 51–100 skilled professionals.
This mold solution is specifically designed for mass production of food-grade polypropylene caps, offering a balance of high output (24 cavities per cycle), long tool life (300,000 cycles guaranteed), and low maintenance. The hot runner system minimizes material waste and shortens cycle times, while the hardened S136 steel provides excellent wear resistance and dimensional stability. Below we break down the key features, technical specifications, and benefits that make this mold a reliable investment for your packaging line.
Key Features & Technical Specifications
- 24-Cavity Configuration: Delivers high throughput – up to 24 caps per injection cycle, significantly boosting production efficiency compared to lower cavity molds.
- Hot Runner System: Uses internally heated manifolds and nozzle tips to keep the PP melt at optimal temperature, reducing sprue waste and cycle time by 15–25%.
- Hardened S136 Steel (48–52 HRC): Offers superior corrosion resistance against PP additives, high hardness for prolonged mechanical life, and excellent polishability for glossy caps.
- Glossy Mirror Finish (Ra ≤ 0.05 µm): Achieves a high-gloss cap surface that meets food packaging aesthetic requirements, also reduces mold release force and prevents sticking.
- 300,000 Cycle Lifespan: Tested and validated for consistent performance over 300,000 shots before requiring minor maintenance; full mold rebuild available upon request.
- PP Material Compatibility: Optimized for polypropylene (PP) – common for food caps – with proper cooling channel layout to minimize shrinkage and warpage.
- Precision Cooling System: Strategically placed cooling circuits ensure uniform temperature distribution, reducing cycle time and improving part quality.
| Parameter | Value |
|---|---|
| Number of Cavities | 24 |
| Runner Type | Hot Runner (internally heated) |
| Steel Material | S136, hardened to 48–52 HRC |
| Surface Finish | Glossy mirror (Ra ≤ 0.05 μm) |
| Guaranteed Cycle Life | 300,000 cycles |
| Recommended Material | PP (polypropylene) |
| Optional Services | Mold trial, CAD design adjustment, steel upgrade |
Beyond specifications, this mold delivers tangible benefits to your production line: reduced per-part cost due to higher cavity count, lower material waste from hot runner, extended tool lifespan from hardened steel, and superior cap quality that meets stringent food contact standards. The glossy finish eliminates the need for secondary polishing operations, saving time and expense.
Our TS16969-certified manufacturing facility in Changzhou, Jiangsu, has served global markets since 2017, including North America, Europe, Southeast Asia, and South America. With a dedicated team of 51–100 employees and a factory area of 1,000–3,000 square meters, we ensure on-time delivery from Jiangsu, Shanghai, or Shenzhen ports. Every mold undergoes rigorous quality checks – from material certification to cycle testing – to guarantee performance as specified.
We invite you to partner with us for your next mold project. Whether you need a standard 24-cavity cap mold or a custom adaptation, our engineers can adjust gate locations, cooling layout, or part geometry to your specific cap design. Contact our sales team for a quotation, mold sample, or technical discussion – we are ready to support your production goals with precision and reliability.
Frequently Asked Questions
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Can this mold be used for other materials besides PP?
While the mold is optimized for PP, it can be adapted for other thermoplastics with similar flow characteristics (e.g., PE). However, modifications to cooling channels and gate design may be required. Please consult our engineering team for feasibility evaluation. -
What is the typical lead time for this 24-cavity hot runner mold?
Standard lead time is 25–35 business days from design approval. Rush orders may be available upon request with additional charges for expedited service. -
How do you ensure the mold achieves 300,000 cycles?
We use high-quality hardened S136 steel, precision heat treatment, and advanced cooling design. Each mold is cycle-tested in our facility before shipment, and we provide a warranty covering 300,000 cycles under normal operating conditions. -
Is the glossy finish durable for food contact?
Yes, the mirror polished surface (Ra ≤ 0.05 μm) is corrosion-resistant and easy to clean, meeting food safety requirements for cap surfaces. It also resists sticking and wear over many cycles. -
Can you customize the cap design or mold dimensions?
Absolutely. As an OEM mold maker, we can adjust cavity geometry, thread design, gate location, and overall mold size to match your existing cap specifications. Provide 2D/3D drawings for a custom quote. -
What shipping options are available?
We ship via sea or air from Jiangsu, Shanghai, or Shenzhen ports. Standard export packaging (wooden case, moisture protection) is included. We also assist with customs documentation. -
Do you provide after-sales technical support?
Yes, we offer remote troubleshooting, replacement parts (hot runner nozzles, heaters, etc.), and optional on-site commissioning for an additional fee. Our team is available in English and Chinese. -
Is the hot runner system from a specific brand?
We use reputable hot runner brands such as Yudo or MoldMaster, or customer-specified brands. The system is fully integrated and temperature-controlled for stable operation.
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