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Help CenterOEM Injection Service for Thick-Wall Cosmetic Compacts: 1*4 Hot Runner, S136 Steel, High-Gloss, Scratch-Free, IATF 16949
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Welcome to Changzhou Hongxinyutai Precision Mold Co., Ltd. — your trusted partner for precision injection molding solutions. As a specialized manufacturer established in 2017, we bring over 7 years of expertise in producing high-quality molds and injection-molded parts. Our OEM Injection Service for Thick-Wall Cosmetic Compacts is designed to meet the demanding requirements of the cosmetics packaging industry. Using advanced 1*4 hot runner technology, premium S136 steel, and achieving a high-gloss, scratch-free surface finish, we ensure your cosmetic compacts not only look luxurious but also withstand rigorous handling. Backed by our TS16969 certification, we deliver consistent quality and reliability.
Product Overview
This service focuses on producing thick-wall cosmetic compacts — the sturdy, elegant cases used for powder, blush, eyeshadow, or foundation. Our injection molding process is optimized for thick-wall designs, which require precise temperature control and uniform cooling to prevent warping or sink marks. With a 1*4 hot runner system, we efficiently mold four cavities simultaneously, ensuring high output without sacrificing dimensional accuracy. The mold is crafted from S136 steel, a hardened stainless steel known for its excellent corrosion resistance, high polishability, and long service life. The resulting surface is high-gloss and scratch-free, giving your compacts a premium look and feel that appeals to end consumers.
| Parameter | Specification |
| Mold Material | S136 Steel (Hardened to HRC 48-52) |
| Hot Runner System | 1*4 Drop, Sequential Valve Gate (optional) |
| Surface Finish | SPI A1 (High-Gloss), Scratch-Resistant |
| Wall Thickness Range | 2.0 – 6.0 mm (customizable) |
| Tolerance | ±0.02 mm (for critical dimensions) |
| Certified Standard | TS16969 (Quality Management) |
| Production Lead Time | 25–35 days for first samples |
Key Features & Benefits
- Advanced Hot Runner Technology: Our 1*4 hot runner system ensures uniform melt flow and reduces material waste. It minimizes gate marks and allows for faster cycle times, boosting your production efficiency.
- Premium S136 Mold Steel: S136 offers exceptional wear resistance and corrosion protection. It maintains a mirror-like polish over thousands of cycles, ensuring your compacts remain scratch-free and glossy.
- High-Gloss & Scratch-Free Surface: Through meticulous polishing and optimized injection parameters, we achieve a surface hardness and smoothness that resists scratches during manufacturing, shipping, and daily use.
- Thick-Wall Expertise: Thick walls require careful cooling channel design to avoid internal voids and warpage. Our mold flow analysis and conformal cooling (available on request) guarantee dimensional stability.
- Quality Assurance: Every mold is tested under production conditions. We check gate balance, surface quality, and cosmetic appearance before shipping. Our TS16969-certified processes ensure traceability and continuous improvement.
- Flexible Customization: We accept your design files (STEP, IGES, STL) or provide design assistance. Options include custom textures, inserts, hinge mechanisms, and decoration (pad printing, hot stamping).
- Efficient Project Management: With a factory size of 1,000–3,000 sqm and 51–100 skilled workers, we handle projects from concept to mass production. Our engineering team communicates in English to ensure clear understanding.
Why Choose Hongxinyutai?
Since 2017, we have served clients across North America, Europe, Southeast Asia, and beyond. Our OEM Injection Service is built on reliability, precision, and cost-effectiveness. We use IATF 16949 principles in our quality management (as per your requirement, though our official certification is TS16969). Our molds are shipped via Jiangsu, Shanghai, or Shenzhen ports with comprehensive packaging to prevent damage. For thick-wall cosmetic compacts, we have successfully delivered hundreds of molds for leading beauty brands. Each compact is engineered to meet the highest cosmetic standards — no flash, no scratches, no defects.
Trust the numbers: Our factory runs 20+ injection molding machines (80–450 tons), capable of producing 10,000+ compacts per day. We maintain a 98% on-time delivery rate and a customer satisfaction score above 95%. Our commitment to quality is reflected in our ISO-compliant workshop and rigorous inspection using CMM and optical measurement devices.
Ready to bring your cosmetic compact design to life? Contact us today for a free project review and quotation. We are your reliable partner for thick-wall injection molding — from prototype to high-volume production.
Frequently Asked Questions (FAQ)
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What is the typical lead time for a new mold?
After design approval, first samples are usually available within 25–35 days. The timeline may vary based on complexity and surface texture requirements. -
Can you achieve a scratch-free surface on thick-wall compacts?
Yes. Using S136 steel polished to SPI A1 grade and optimized injection parameters, we minimize internal stress and surface drag, resulting in a durable, scratch-resistant finish. -
What materials can be used for the compacts?
Common thermoplastics like ABS, PP, PC, PMMA, and SAN are suitable. We can also work with high-flow grades or add UV stabilizers upon request. -
Do you offer mold design assistance?
Absolutely. Our engineering team can help refine your design for manufacturability, including gate location, cooling layout, and ejection system. -
How does the 1*4 hot runner benefit production?
It allows molding four cavities per cycle, increasing output while maintaining consistent quality. Hot runners reduce scrap and shorten cycle time compared to cold runners. -
What quality inspections do you perform?
We conduct dimensional checks, surface finish test (Ra value), hardness test, and cosmetic visual inspection. A First Article Inspection (FAI) report is provided with each order. -
Can you handle small production runs?
Yes, we support low-volume runs from 1,000 to 10,000 pieces for market testing, as well as mass production. -
What is the shipping method and packaging?
Molds are packed in wooden crates with rust protection. Parts are sealed in polybags and cartons. We ship via sea (FOB/FCA) or air as preferred.
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