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Help CenterOEM Thick-Wall PMMA Cosmetic Jar Injection Mold: 1*4 Cavities, S136 Steel, Mirror Finish, +GF+ & Sodick EDM
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Changzhou Hongxinyutai Precision Mold Co., Ltd. specializes in designing and manufacturing high-quality injection molds for the cosmetic packaging industry. Our OEM Thick-Wall PMMA Cosmetic Jar Injection Mold is engineered to produce thick-walled, crystal-clear jars with exceptional dimensional stability and aesthetic appeal. Utilizing premium S136 steel and advanced +GF+ & Sodick EDM technology, this 1×4 cavity mold delivers mirror-finish surfaces that meet the most demanding cosmetic brand standards. Whether you need quick prototypes or volume production, our team ensures precision, durability, and cost-efficiency.
This mold is specifically designed for PMMA (acrylic) material, known for its transparency, scratch resistance, and UV stability. The thick-wall design requires careful gate placement and cooling optimization to avoid sinks and warpage. Our engineers use Moldex3D simulation (optional service) to validate filling and cooling before steel cutting. The result is a mold that produces consistent, high-gloss jars with zero flash and short cycle times.
| Parameter | Value |
|---|---|
| Mold Dimensions (mm) | 400 x 400 x 350 (Customizable) |
| Cavity Steel | S136 (Hardness HRC 48-52) |
| Core Steel | S136 (Hardness HRC 48-52) |
| Mirror Polishing Grade | SPI A1 (Equivalent to 4,000 grit) |
| EDM Process | +GF+ & Sodick Die Sinking EDM (Ra |
| Cooling System | Spiral / Baffle cooling with water flow simulation |
| Cycle Time Estimate | 15–25 seconds (depending on wall thickness) |
| Mold Life Expectancy | 500,000–1,000,000 shots (with proper maintenance) |
Product Features & Benefits
- Thick-Wall Capability: Optimized gate and runner design supports wall thickness up to 6mm without sink marks or internal bubbles.
- Mirror Finish Surface: SPI A1 polishing achieves a glass-like transparency on PMMA jars, eliminating the need for secondary coating.
- Durable Mold Steel: S136 (Stavax) provides excellent corrosion resistance and thermal conductivity, reducing mold downtime.
- High-Precision EDM: +GF+ and Sodick EDM machines ensure tight tolerances (±0.01mm) and fine surface texture.
- 1×4 Cavity Efficiency: Four cavities per cycle increase productivity while maintaining uniform quality across all parts.
- Easy Maintenance: Modular design with quick-change inserts allows fast cavity replacement and reduced maintenance costs.
- OEM Customization: We adjust cavity count, gate type (side gate, pin-point), cooling layout, and ejection system per your jar design.
- Comprehensive Testing: Each mold undergoes trial shots at our in-house workshop (80–120 ton machines) before shipment.
Our mold is built to withstand high-volume production in automated environments. The +GF+ & Sodick EDM combination delivers a fine finish that reduces post-mold polishing time. The mirror-finished cavities also improve the release of PMMA parts, minimizing scratches and surface defects. With proper care, this mold can produce over one million jars without significant wear.
We serve customers across North America, Europe, Southeast Asia, and the Middle East, delivering molds with lead times as short as 30–45 working days. Our factory in Changzhou, Jiangsu covers 1,000–3,000 sqm and houses over 50 skilled technicians. We hold TS16969 certification (quality management system for automotive and precision manufacturing), ensuring rigorous quality controls at every stage.
To get started, simply send your jar drawing (2D/3D) or sample. We will provide a detailed DFM report and free quotation within 48 hours. Our team speaks English, Spanish, and Chinese, and we are ready to support your project from concept to production. Contact us today for a mold that combines precision, durability, and competitive pricing.
Frequently Asked Questions
-
Q: What is the minimum order quantity (MOQ) for this mold?
A: MOQ is 1 set. We welcome prototype or small-run molds for new product development. -
Q: Can you use other steel grades, like 718H or H13?
A: Yes, we can substitute steel according to your budget and production requirements. S136 is recommended for PMMA mirror finish. -
Q: How do you ensure the mold produces thick-wall jars without bubbles?
A: We use flow simulation (Moldex3D) and optimize the gate location and cooling to minimize air traps and shrinkage. Trial shots confirm the result. -
Q: What is the typical lead time for this mold?
A: Standard lead time is 30–45 working days, depending on complexity and current workload. Express service (20 days) is available upon request. -
Q: Do you ship worldwide and offer installation support?
A: Yes, we ship from Shanghai, Shenzhen, or Jiangsu ports. We provide mold commissioning instructions via video call or onsite technician (travel fee applies). -
Q: Is the mold compatible with all injection molding machines?
A: The mold base and locating ring dimensions can be customized to fit your machine (e.g., Engel, Arburg, Haitian). We require machine details during quoting. -
Q: Can you add a hot runner system?
A: Yes, hot runners (e.g., from Yudo, Synventive) can be integrated for higher efficiency. The standard design is cold runner with sub-gate. -
Q: What is the warranty policy?
A: We offer a 12-month warranty on workmanship and material defects. Any issues caused by improper operation are not covered.
With our experienced engineering team, advanced equipment, and strict quality management, Changzhou Hongxinyutai Precision Mold Co., Ltd. is your reliable partner for cosmetic packaging molds. Choose our OEM Thick-Wall PMMA Cosmetic Jar Injection Mold to bring your luxury jar design to life with superior clarity and flawless surfaces.
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