Wide mouth cap mold
YUCO Mold specializes in precision-engineered wide mouth cap molds designed for bottles, jars, and containers of all sizes. Our molds are built to ensure consistent, high-quality production while providing cost-effective solutions for your manufacturing needs.
Wide mouth cap mold manufacturer
A wide mouth cover mold is precision injection tooling designed to produce closures for large-neck containers, typically ranging from 43 mm to over 120 mm in diameter. Whether you need a wide mouth cover mold for food packaging, chemical containers, or industrial applications, our molds are designed to meet the highest standards of quality, efficiency, and durability.
- Precision engineering: Our wide mouth cap molds are manufactured with tight tolerances, ensuring consistent dimensions and a perfect fit for every cap produced.
- High production efficiency: Designed for fast cycle times and stable performance, our molds help maximize output while minimizing downtime on your production line.
- Durable & long-lasting: Built from high-grade steel, YUCO Mold's wide mouth cap molds are engineered for long service life, reducing maintenance costs and replacement frequency.
- Custom solutions: We offer fully customizable wide mouth cover mold designs to match your specific cap size, shape, and application requirements.
- Strict quality control: Every wide mouth cap mold undergoes rigorous inspection and testing before delivery, ensuring reliable performance from day one.
Wide mouth cap mold specifications
| Specification Category | Parameter | Typical Value/Range |
|---|---|---|
| Mold Material | Core & Cavity Steel | Pre-hardened: P20 (1.2311), P20+Ni Hardened: H13 (1.2344), NAK80 Stainless: ASSAB Stavax |
| Mold Base Steel | S50C, P20 | |
| Core & Cavity Hardness | Pre-hardened: HRC 30 32±1 Hardened/Heat Treated: HRC 50 52±1 | |
| Basic Dimensions | Mold Dimensions | 650×550×500mm (Example) |
| Cap Diameter Range | 38mm – 120mm (custom sizes available) | |
| Mold Structure | Number of Cavities | 4-64 |
| Parting Line | Horizontal | |
| Runner System | 1. Cold runner 2. Hot runner 3. Cold+Hot runner | |
| Core Pulling / Ejection System | Motor, oil cylinder, stripper plate, angle pin, ejector pin, etc. | |
| Technical Parameters | Mold Weight | 1000-2000kg |
| Injection Pressure | 80-120MPa | |
| Mold Temperature | 40-80℃ | |
| Cooling Time | 25-45s | |
| Design Features | Cooling System | Core: Baffle or bypass cooling Cavity Plate: Chain drilling type cooling |
| Mold Accessories | Compatible with DME/HASCO standards | |
| Venting System | 0.02-0.03mm deep vents | |
| Basket Weave Structure | Round/Square/Diamond holes | |
| Surface Finish | Surface Treatment | Texturing, EDM, Polishing |
| Surface Roughness | Ra0.4-0.8μm | |
| Dimensional Tolerance | ±0.1mm | |
| Mold Life | Pre-hardened Steel | 200,000~300,000 shots |
| Hardened/Heat Treated Steel | 500,000 – 3,000,000 shots (depending on material) | |
| Application Parameters | Applicable Injection Molding Machine | 80T – 500T (depending on cavity number) |
| Product Material | PP, PE, HDPE, PET, POM, ABS | |
| Cycle Time | 45-90s | |
| Delivery & Service | Delivery Time | 30 – 60 days (depending on complexity) |
| Packaging | Standard wooden case | |
| Production Service | Pilot run and molding production available | |
| Special Features | Anti-Deformation Design | Reinforcing rib structure |
| Handle Design | Ergonomic | |
| Stacking Design | Stackable, space-saving |
China cap mold manufacturer
Wide mouth cap mold processing
A wide mouth cap mold consists of five core components — cavity, core, hot runner system, cooling circuit, and ejection mechanism — each engineered to maintain dimensional accuracy across millions of production cycles.
Every wide mouth cap mold is an assembly of interdependent components. Understanding each one helps buyers specify tooling that delivers consistent caps at target cycle times.
- Cavities and core pins: These components shape the outer and inner surfaces of the cap. The cavity forms the external profile, while the core pin defines the internal geometry, including threads or snap features.
- The ejector system: This system removes the molded cap from the core after cooling. Stripper plates or sleeve ejectors are common approaches for cap molds.
- The hot runner system: This system delivers molten material from the injection unit to each cavity. It eliminates cold runner waste and supports faster cycle times.
These elements work together to convert raw resin into dimensionally accurate caps at production speed.
01 Design and prototyping
Every project starts with a thorough review of the customer's product drawings and technical specifications. Our engineering team examines wall thickness, sealing surface geometry, tamper-evident band details, and annual volume targets. These inputs determine cavity count, mold layout, and steel selection. Ambiguities get flagged immediately. A single undefined tolerance on a sealing lip can cascade into weeks of delay if caught during trials instead of at this stage.
02 Mold flow simulation and analysis
Before cutting steel, we run mold flow simulations on the finalized 3D model. Simulation reveals fill balance across all cavities, predicts weld line locations, and identifies potential air traps in deep thread areas. Our engineers use these results to adjust gate dimensions and venting positions.
03 mold manufacturing
YUCO Mold's wide mouth cap mold production combines CNC machining, EDM, wire cutting, and precision grinding to achieve tight tolerances and flawless surface finishes on every cavity and core insert. Each component follows a documented process through polishing and quality inspection to ensure optimal cap appearance and ejection performance.
04 Mold trials
The assembled mold runs its first trial on an injection molding machine matched to its tonnage and shot size requirements. Our technicians collect first-shot samples from every cavity. These samples undergo first article inspection against the approved drawing. Dimensional data is recorded on a structured FAI report covering all critical dimensions.
Why choose YUCO Mold for your wide mouth cap mold?
At YUCO Mold, we combine decades of manufacturing expertise with cutting-edge technology to deliver wide mouth cap molds that meet the highest standards of precision and performance. From custom design to final delivery, we are committed to providing reliable, cost-effective mold solutions that keep your production running at its best.
Expert engineering
Pricing
Customization
Quality control
8/24x7 Service
10,00+ Capacity
Frequently asked questions
What cap sizes are considered wide mouth?
Most buyers define “wide mouth” as any cap diameter that exceeds the standard beverage-closure range. In practice, the threshold sits around 43 mm and extends well beyond 110 mm depending on the end product. Jar-style containers for food, personal care, and industrial goods each gravitate toward different diameter bands. A cosmetics jar might need a 58 mm or 70 mm cap, while a bulk storage container could require something above 100 mm.
The key takeaway: always specify the exact container neck finish before discussing mold design. Diameter alone does not define the mold—wall height, thread pitch, and sealing geometry all shift with each application.
Which is better for wide mouth caps: hot runner or cold runner?
Hot runner systems eliminate runner waste and shorten cycle times. They cost more upfront but pay for themselves quickly in high-volume programs. Our experience shows that any project exceeding 500,000 caps per year benefits from a hot runner’s material savings and faster cycles.
Cold runner molds suit lower-volume or budget-constrained projects. They are simpler to maintain and less sensitive to resin changes between production runs. The trade-off is material waste from runners and slightly longer cycles.
A practical decision framework
- Annual volume above 500,000 units: Hot runner is the stronger investment.
- Annual volume below 200,000 units or frequent resin changes: Cold runner keeps costs manageable.
- Mid-range volumes (200,000–500,000): Evaluate whether the material savings from a hot runner offset the higher mold price within your payback window.
How many cavities should a cap mold have?
Cavity count directly controls output per cycle and mold cost. A single-cavity mold is the least expensive to build but produces the fewest parts per hour. High-volume cap programs typically run 8, 12, 16, or even 24 cavities.
Three factors guide the decision. First, your target daily output. Divide the required annual volume by available production days, then by realistic cycle time, to find the minimum cavity count. Second, your injection molding machine’s clamp tonnage and platen size. Wide mouth caps occupy more platen area per cavity than standard closures, so machine capacity often limits cavity count before economics do.
Third, project economics. Doubling cavities does not double mold cost—it typically adds 40–60 percent—but the per-part cost drops significantly. In our quoting process, we model these three variables together so buyers avoid over-investing in cavities they cannot fill or under-investing in a mold that bottlenecks production.
How long does a wide mouth cap mold last?
A well-built wide mouth cap mold should deliver one million or more cycles before requiring major refurbishment. Several factors determine where on that spectrum a mold lands.
Steel quality sets the ceiling. Hardened tool steels such as H13 or S136 resist wear far longer than pre-hardened alternatives. Maintenance frequency matters equally—regular cleaning, lubrication, and inspection of parting-line surfaces prevent small issues from becoming catastrophic failures. The resin being processed also plays a role; glass-filled or mineral-filled compounds accelerate wear on core and cavity surfaces compared to unfilled grades.
Operating conditions round out the picture. Running a mold above its rated cycle speed or at improper temperatures shortens its productive life.
Our recommendation: schedule a preventive maintenance interval every 250,000 cycles and budget for a mid-life refurbishment around the 500,000-cycle mark. This approach consistently extends total mold life beyond the initial design target.
Cap mold supplier - YUCO Mold
YUCO Mold goes beyond wide mouth cap molds — we also offer a comprehensive range of cap mold solutions to meet diverse packaging needs. From flip-top cap molds and screw cap molds to disc-top cap molds and beyond, our extensive product lineup ensures you can find the perfect mold for any application, all backed by the same precision engineering and quality standards YUCO Mold is known for.
Ready to elevate your production with precision-engineered wide mouth cap molds? Contact YUCO Mold today and let our experts design the perfect wide mouth cover mold tailored to your needs.
Looking forward to in-depth and long-term cooperation with you.
Tel: +86 13586040750
