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Help CenterOEM Custom PP Bottle Blow Mold - Hardened Steel Multi-Cavity, 300K+ Shots, Glossy Cavity, IATF 16949 Compliant
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Welcome to Changzhou Hongxinyutai Precision Mold Co., Ltd. As a specialized blow mold manufacturer established in 2017, we take pride in delivering OEM custom PP bottle blow molds that combine durability, precision, and high productivity. Our hardened steel multi-cavity molds are engineered for 300,000+ shots with a glossy cavity finish, ensuring consistent bottle quality and reduced cycle times. With a factory spanning 1,000-3,000 square meters and a dedicated team of 51-100 skilled employees, we have the capacity to meet both small trials and mass production needs. Our molds are designed to comply with IATF 16949 standards (based on our TS16969 certification), giving you confidence in every part produced.
Whether you are a bottle manufacturer or a packaging brand, our blow molds offer exceptional value through longevity, low maintenance, and superior surface finish. Let us help you optimize your production line with a tailor-made solution.
Key Features & Technical Specifications
Our PP bottle blow mold is built from premium hardened steel, typically H13 or equivalent, which undergoes heat treatment to achieve high hardness and wear resistance. The multi-cavity design (2, 4, 6, 8, or more cavities) maximizes output per cycle, while the glossy cavity surface (mirror-polished to Ra ≤ 0.1 µm) ensures bottles have a smooth, transparent-like finish without additional post-processing.
- Material: Hardened tool steel (H13/40Cr) with nitriding treatment for extended life.
- Cavity Count: Customizable – from single cavity up to 12 cavities or more based on bottle size and production volume.
- Mold Life: Designed for 300,000+ shots under normal PP processing conditions (200-230°C).
- Surface Finish: Glossy mirror finish (Ra ≤ 0.05 µm achievable) for high-gloss bottle surfaces.
- Cooling System: Optimized conformal cooling channels to reduce cycle time by up to 20% and minimize warpage.
- Venting: Precision venting slots to eliminate trapped air and prevent defects.
- Compliance: IATF 16949 compliant manufacturing process, ensuring traceability and quality control.
- Customization: OEM – we design according to your bottle drawing, including neck finish, thread, and base design.
| Parameter | Value / Range |
|---|---|
| Mold Base Material | P20 / 40Cr (optional hardened steel inserts) |
| Cavity Steel Hardness | 48-52 HRC (after heat treatment) |
| Max. Injection Pressure | 1500 bar (depends on machine) |
| Typical Cycle Time | 8-15 seconds (based on bottle size and cavity number) |
| Mold Weight | 500 kg – 2,000 kg (custom) |
| Packaging | Seaworthy wooden crate with moisture-proof treatment |
| Warranty | 12 months or 300,000 shots (whichever comes first) |
Why Choose Our PP Bottle Blow Mold?
- High Efficiency: Multi-cavity design significantly boosts hourly output – a 4-cavity mold can produce up to 1,200 bottles per hour (assuming 12-second cycles).
- Consistent Quality: Glossy cavity finish ensures uniform bottle wall thickness and a premium appearance, reducing rejection rates.
- Long Service Life: Hardened steel and precise heat treatment extend mold life beyond 300,000 shots, lowering your total cost per bottle.
- Easy Maintenance: Modular components and standard spare parts (e.g., neck rings, bottom plates) are available for quick replacements.
- Customer Support: We provide 3D mold design review, trial shots at our facility, and on-site installation guidance upon request.
By choosing Changzhou Hongxinyutai, you are partnering with a manufacturer that has established a strong reputation across global markets including North America, South America, Europe, Southeast Asia, and the Middle East. Our 1,000-3,000 square meter factory is equipped with advanced CNC machining centers, EDM, and CMM inspection equipment to ensure every mold meets tight tolerances (±0.02 mm).
Trust Batch after Batch
We have successfully delivered over 500 sets of blow molds since 2017, with average customer satisfaction ratings above 98%. Our TS16969 certification demonstrates our commitment to quality management systems, and we continuously improve our processes to meet the evolving needs of the packaging industry.
To get a competitive quote and a free design feasibility analysis, simply send us your bottle drawing or sample. We will respond within 24 hours with our proposal.
Frequently Asked Questions (FAQ)
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What bottle sizes can your mold produce?
We can design molds for PP bottles ranging from 10 ml to 5 liters. Neck finishes can be customized (e.g., 28 mm, 38 mm, 45 mm). -
Is the glossy cavity finish suitable for all PP grades?
Yes, the mirror polish works well with both homopolymer and copolymer PP. For high-gloss applications, we recommend using a PP grade with low shrinkage. -
Can I use your mold on my existing blow molding machine?
We design the mold base to match your machine’s tie bar spacing, platen size, and clamping force. Please provide your machine specifications. -
What is the typical lead time for a custom mold?
After design approval, production takes about 30-45 working days, depending on complexity and cavity count. Rush orders are possible with a surcharge. -
Do you offer samples before mass production?
Yes, we provide trial shots and sample bottles for your approval. We can also share video of the mold running in our factory. -
How do you ensure the mold achieves 300,000+ shots?
We use high-grade steel, precise heat treatment, and conduct finite element stress analysis. Regular maintenance recommendations are provided. -
What payment terms do you accept?
Common terms include T/T (30% deposit, 70% before shipment) or L/C at sight. For repeat customers, flexible terms can be discussed. -
Do you ship to my country?
We ship worldwide via sea, air, or express from Jiangsu, Shanghai, or Shenzhen ports. We have experience exporting to over 20 countries.
Ready to upgrade your bottle production? Contact us today to discuss your requirements. Our technical team is available for online consultation and video meetings. Let’s make your next injection blow mold project a success!
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