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Help CenterCustom OEM Clear Cosmetic Cap Injection Service With UG/Parasolid Design & Hardened S136 Steel Mold
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As a leading manufacturer based in Changzhou, Jiangsu, China, Changzhou Hongxinyutai Precision Mold Co., Ltd. brings over 6 years of specialized experience in precision injection mold making. Our Custom OEM Clear Cosmetic Cap Injection Service is designed to meet the highest standards of clarity, precision, and durability. By utilizing advanced UG/Parasolid design software and constructing molds from Hardened S136 Steel, we deliver transparent caps that meet the exacting requirements of the global cosmetic packaging industry.
Our service is not just about making a mold; it's about providing a complete solution from concept to production. We understand that the clear appearance of a cosmetic cap can make or break a product's shelf appeal. That's why we prioritize optical clarity, dimensional accuracy, and flawless surface finish. With a factory spanning 1,000-3,000 square meters and a dedicated team of 51-100 employees, we have the capacity to handle small prototyping runs to large-scale mass production.
Key Features & Technical Specifications
- Premium Mold Material: Hardened S136 steel (HRC 48-52) ensures excellent wear resistance, corrosion resistance, and mirror polish capability for crystal-clear caps.
- Advanced Design Support: We accept UG (Unigraphics) and Parasolid file formats, enabling seamless integration with your existing product development workflow. We also offer full DFM (Design for Manufacturability) analysis.
- Custom OEM Service: Fully customizable dimensions, wall thickness, thread types, and closure mechanisms (screw, snap-on, flip-top, etc.). Your brand identity is captured precisely.
- High Clarity & Finish: Our molds achieve an SPI-A1 mirror finish on cavity surfaces, resulting in caps with outstanding transparency, no flow lines, and minimal optical distortion.
- Consistent Quality: All molds undergo rigorous try-out and testing, with CMM inspection reports available upon request. We follow TS16969 quality management standards.
- Fast Lead Times: Typical mold delivery within 25-40 working days depending on complexity; sample approval within 7 days after T1.
- Global Shipping: We ship via sea or air from Jiangsu, Shanghai, or Shenzhen ports to major markets worldwide.
Typical Product Parameters (Example Table)
| Parameter | Details |
| Cap Diameter Range | 15mm – 80mm |
| Height Range | 10mm – 60mm |
| Plastic Materials Suitable | PET, PP, PS, Acrylic (PMMA), PC, SAN |
| Mold Cavity Count | 1 – 48 cavities (custom) |
| Injection Machine Tonnage Needed | 80 – 320 tons (depending on cap size & cavity number) |
| Mold Base | LKM, HASCO, DME standard or custom |
| Gate Type | Submarine, pinpoint, side gate (optimized for clarity) |
| Cooling System | Conformal cooling channels for uniform temperature |
Why Choose Our Service?
Our injection service goes beyond simple mold manufacturing. We partner with you from the design phase, offering UG/Parasolid compatibility to ensure your cap's geometry is optimized for injection molding without sacrificing aesthetic requirements. The use of Hardened S136 Steel guarantees long mold life (typically 500,000 to 1,000,000 cycles) and consistent production of clear caps with high gloss. Each mold is equipped with precise ejection systems and hot runner options to minimize waste and cycle time.
We also provide free sample molding (up to 200 pieces) for initial evaluation, allowing you to test cap fit, clarity, and functionality before mass production. Our quality control team inspects every shipment using ISO-comparable processes, and we maintain a defect rate below 0.5% in regular production.
Frequently Asked Questions (FAQ)
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Q: What file formats do you accept for design?
A: We accept UG (NX), Parasolid, STEP, IGES, STL, and 3D PDF. For 2D drawings we accept DXF/DWG. -
Q: Can you make custom colors instead of clear?
A: Yes, we can add color masterbatch to the resin. However, clear caps require a special high-clarity base material; we advise using virgin pellets only. -
Q: How long does it take to get samples?
A: Typically 30-45 days for mold fabrication, then 5-7 days for sample shipping. Urgent projects can be expedited with a surcharge. -
Q: Do you provide mold modifications after delivery?
A: Yes, we offer after-sales support and can modify the mold (e.g., change threads, add venting) within the warranty period (12 months) or at a nominal fee. -
Q: What is the minimum order quantity (MOQ) for production?
A: For mass production, we recommend a minimum of 10,000 pieces per batch to offset setup costs. Smaller quantities are possible for trial runs. -
Q: Is S136 steel better than 718H for clear caps?
A: S136 is a stainless mold steel with superior corrosion resistance and polishability, making it the preferred choice for optical clear parts. 718H is a pre-hardened steel suitable for non-transparent parts. -
Q: Do you help with assembly of caps onto bottles?
A: We focus on injection molding. However, we can recommend partner assembly services in our network. Contact us for details. -
Q: Can you manufacture the caps using recycled plastic?
A: For clear caps, we strongly advise using virgin material to achieve optical clarity. Recycled materials often contain impurities that cause haze. We can test if you provide the resin.
Trust & Reliability
Since our establishment in 2017, Changzhou Hongxinyutai Precision Mold Co., Ltd. has successfully delivered hundreds of injection molds to clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our factory is certified under TS16969 (a rigorous quality standard for automotive and precision industries), ensuring that every process from design to delivery meets strict quality benchmarks. We employ a skilled workforce of 51-100 people, maintain a factory area of 1,000-3,000 square meters, and operate advanced CNC, EDM, and wire-cutting equipment.
We take pride in our transparent communication and commitment to customer satisfaction. Clear caps require flawless execution, and our hardened S136 steel molds produce consistent, bright, and defect-free caps batch after batch. Whether you need a simple flip-top closure or a complex dual-wall cap, our team is ready to deliver.
Ready to start your project? Contact us today with your design files or requirements. We offer competitive pricing, free DFM analysis, and a dedicated project manager to guide you from concept to finished product. Let’s create the perfect clear cap that makes your brand stand out.
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