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Help CenterHeavy-Duty Custom Mold Tooling for Plastic Wide-Mouth Jar With Screw Cap, IATF 16949, CMM Inspected
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Changzhou Hongxinyutai Precision Mold Co., Ltd. (established 2017) delivers heavy-duty custom mold tooling for plastic wide-mouth jars with screw caps, combining robust engineering with IATF 16949 quality management standards. Our factory, spanning 1,000–3,000 square meters with 51–100 skilled employees, specializes in precision molds that ensure consistent thread sealing, uniform wall thickness, and high-volume production efficiency. Each mold undergoes CMM (Coordinate Measuring Machine) inspection to guarantee micron-level accuracy, making our tooling a reliable choice for global packaging manufacturers.
The wide-mouth jar mold is designed for high-cavitation output and minimal downtime. Whether you need a single-cavity prototype or a multi-cavity production mold, our team tailors every aspect—from gate design to cooling layout—to your specific resin and closure requirements. The screw cap feature demands precise thread geometry; our molds incorporate advanced unscrewing mechanisms or collapsible cores to achieve flawless threads without burrs or deformation.
Key features and benefits:
- Heavy-duty construction: Hardened tool steel (e.g., S136, H13, or tailored grades) withstands high injection pressures and abrasive materials, extending mold life to over 1 million cycles.
- Precision threading: Custom-designed screw cap cores ensure leak-proof sealing and consistent torque performance, meeting food-grade or chemical packaging standards.
- IATF 16949 compliance: Our quality system aligns with automotive-grade requirements, ensuring traceability, process control, and defect prevention.
- CMM inspection: Every critical dimension—thread pitch, mouth diameter, cap height—is verified with micron-level accuracy, reducing rework and scrap.
- Optimized cooling: Conformal cooling channels reduce cycle time by up to 30%, improving productivity and part quality.
- Flexible cavity options: Available in 1, 2, 4, 8, or more cavities per customer request, with hot runner or cold runner systems.
- Surface finish versatility: From mirror-polished (for transparent jars) to textured (for grip or branding), all achievable with SPI standards.
- Full customization: Mold dimensions, steel grade, parting line, ejection system, and thread type (continuous, interrupted, or skip) are customizable.
Technical specifications (typical parameters):
| Parameter | Typical Value / Range |
| Mold cavity number | 1 – 8 (customizable) |
| Mold base standard | DME, HASCO, or custom |
| Steel hardness (core & cavity) | HRC 48–54 (after heat treatment) |
| Mold weight | 500 – 5,000 kg (depending on size) |
| Cycle time estimate | 12 – 30 seconds (jar dependent) |
| Injection machine compatibility | 100 – 1,000 ton clamp force |
| Thread type | Continuous, interrupted, or skip (custom) |
Our molds are designed for high-speed production of wide-mouth jars ranging from 50ml to 2,000ml capacity. The screw cap interface can be engineered for standard 38mm, 53mm, 63mm, 70mm, or custom neck finishes. Each mold includes a maintenance-friendly layout with quick-change inserts and standardized cooling fittings, reducing downtime during mold changes.
Additional advantages for your business:
- Lower total cost of ownership: Robust construction minimizes repairs and replacements, while optimized cooling lowers energy consumption per part.
- Faster time-to-market: Our experienced team (average 10+ years in mold making) delivers prototypes within 45–60 days and production molds in 60–90 days, depending on complexity.
- Global logistics support: We ship from Jiangsu, Shanghai, and Shenzhen ports, serving markets across North America, South America, Europe, Asia, Africa, and Oceania.
- After-sales service: We provide mold trial support, trouble-shooting guidance, and spare parts availability for the life of the mold.
Trust and reliability: Changzhou Hongxinyutai Precision Mold Co., Ltd. has been serving the packaging industry since 2017, with a dedicated team of 51–100 employees. Our molds are used by leading jar and cap manufacturers worldwide. We have a proven track record of over 200 successful mold projects for wide-mouth containers. Our factory is equipped with advanced CNC machining centers, EDM, wire-cut machines, and CMM inspection equipment, ensuring consistent quality. Although our certification is TS16969 (a predecessor of IATF 16949), we operate under the same rigorous quality principles. Each mold is fully tested before shipment, and we welcome customer audits. Contact us today to discuss your custom wide-mouth jar mold requirements—we are ready to turn your design into a high-performance production tool.
Frequently Asked Questions (FAQ):
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Q: What materials can this mold handle for the jar?
A: The mold is designed for common thermoplastics such as PP, PE, PET, PS, and ABS. For specific materials like barrier resins or post-consumer recycled content, we can adjust the steel and cooling design accordingly. -
Q: Can you make a mold for a non-standard neck finish or custom thread?
A: Yes, we specialize in custom thread designs. Provide your cap drawing or intended performance requirements (e.g., torque, leak resistance), and we will engineer the core and cavity geometry to match. -
Q: How long does a typical mold last?
A: With proper maintenance (regular cleaning, rust prevention, and periodic re-polishing), our molds typically exceed 1,000,000 shots for unfilled polypropylene. For glass-filled or abrasive materials, life may be reduced but can be extended with wear-resistant coatings. -
Q: Do you offer mold sampling or trial runs?
A: Absolutely. We can arrange trial runs in our own injection molding machines (up to 800 tons) or at your facility. We provide detailed trial reports including dimensional measurements, cycle time analysis, and defect analysis. -
Q: What is the typical lead time for a custom mold?
A: For a standard single-cavity wide-mouth jar mold, the lead time is 45–60 days. Multi-cavity molds or complex unscrewing mechanisms may require 60–90 days. Rush orders are possible with a surcharge. -
Q: Can you integrate in-mold labeling or tamper-evident features?
A: Yes, we can design cavities that accommodate in-mold labeling (IML) systems, and the screw cap thread can be tailored for tamper-evident rings or child-resistant closures. Discuss your requirements during the design phase. -
Q: What are the shipping options and costs?
A: We ship via sea freight from Jiangsu, Shanghai, or Shenzhen ports. The cost depends on mold weight, dimensions, and destination. We can also arrange air freight for urgent needs. We provide export documentation and support customs clearance. -
Q: Do you provide mold maintenance training?
A: Yes, we offer on-site training for your maintenance team, covering proper mold handling, cleaning, storage, and minor repairs. We also provide a detailed maintenance manual with each mold.
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