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Help CenterCustom Plastic Injection Mold for Two-Piece Bottle Caps, PP/PE, 16 Cavities, Hot Runner System, S136 Steel, Precision Fit, 300K Shots
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As a specialized manufacturer, Changzhou Hongxinyutai Precision Mold Co., Ltd. has been dedicated to delivering high-quality injection molds since 2017. Our Custom Plastic Injection Mold for Two-Piece Bottle Caps is engineered to meet the demanding requirements of the packaging industry. With 16 cavities, a precision hot runner system, and durable S136 steel, this mold ensures consistent production of PP or PE caps with excellent dimensional accuracy and long service life.
Our factory spans 1,000-3,000 square meters and is staffed by 51-100 experienced professionals. We serve global markets across North America, South America, Europe, Asia, Africa, and Oceania, providing reliable tooling solutions. This mold is designed for 300,000 shots of dependable operation, making it a cost-effective choice for high-volume cap manufacturing.
Key Features & Technical Specifications
| Mold Material | S136 Stainless Steel (pre-hardened, corrosion-resistant) |
| Cavity Number | 16 cavities for high output |
| Runner System | Hot runner (gate type: pinpoint or valve gate optional) |
| Product Material | PP (Polypropylene) or PE (Polyethylene) |
| Application | Two-piece bottle caps (inner & outer cap) |
| Mold Life | 300,000 shots (under normal maintenance) |
| Precision Fit | ±0.01mm tolerance for tight sealing |
| Cooling System | Optimized conformal cooling channels for uniform temperature |
| Ejection System | Hydraulic or mechanical ejection (customizable) |
| Certification | TS16969 (IATF 16969 equivalent) quality system |
Detailed Advantages & Benefits
- High Productivity: With 16 cavities per cycle, you can produce thousands of caps per hour. The hot runner system eliminates runner waste and reduces cycle time, boosting overall efficiency.
- Long Mold Life: S136 steel offers excellent hardness (HRC 48-52) and corrosion resistance, ensuring the mold withstands high-pressure injection and maintains precision over 300,000+ shots.
- Precision Fit: The mold is machined with CNC and EDM to achieve tolerances of ±0.01mm. This guarantees that inner and outer caps align perfectly, providing leak-proof sealing for bottles.
- Customization: We can adjust cavity layout, gate type, cooling circuits, and ejection system according to your cap design (size, thread, wall thickness). Optional surface texturing (e.g., VDI, SPI) is available.
- Energy & Cost Savings: The hot runner system reduces material waste by eliminating cold runners. Optimized cooling shortens cycle time by up to 20%, reducing energy consumption per part.
- Versatile Material Compatibility: Designed for PP and PE, two of the most common cap materials. It can also process other thermoplastics with similar melt flow (e.g., HDPE, LDPE) upon request.
- Easy Maintenance: Modular design with replaceable inserts for wear-prone areas. Cooling channels are easy to clean, and all moving parts are guided with bronze bushings for smooth operation.
Trust & Reliability
Since our establishment in 2017, Changzhou Hongxinyutai Precision Mold Co., Ltd. has grown into a trusted partner for international clients. Our TS16969 certification reflects our commitment to quality management in the automotive and packaging sectors. We have shipped molds to over 15 countries, including demanding markets in Europe and North America. Our after-sales support includes detailed documentation, spare parts, and remote troubleshooting. We invite you to partner with us for your next cap molding project.
Frequently Asked Questions
1. What is the minimum order quantity (MOQ) for this mold?
Typically we accept one set as MOQ. Customization does not require a large batch.
2. Can the mold be used for both PP and PE without modification?
Yes, the mold is designed for both materials. However, slight adjustments in processing parameters (temperature, pressure) may be needed when switching materials.
3. How long does it take to produce the mold?
Lead time is approximately 30-45 working days after design approval and deposit. Urgent orders can be discussed.
4. Do you provide sample testing before mass production?
Absolutely. We offer mold trial samples (T0 samples) for customer inspection. Adjustments will be made until acceptable quality is achieved.
5. What guarantee do you offer on the mold?
We provide a 12-month warranty on workmanship and materials under normal operating conditions. Spare parts are available for quick replacement.
6. How do you ensure the precision fit between inner and outer caps?
Both cavities are machined on the same CNC center with matched tolerances. We apply shrinkage compensation based on the material's shrink factor to ensure final dimensions are within ±0.01mm.
7. Can I integrate a tamper-evident feature in the cap design?
Yes, we can incorporate tamper-evident rings or bridges into the cavity design. Our engineering team will work with your design to achieve the required functionality.
8. What is the shipping weight and packaging?
Approximate weight is 800-1200 kg depending on plate thickness. The mold is packed in a wooden crate with moisture-proof treatment and export-ready labeling. We ship via sea or air from Jiangsu/Shanghai/Shenzhen ports.
Contact us today to discuss your custom bottle cap mold requirements. We provide free technical consultation and a competitive quotation within 24 hours.
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