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PP Preform Mould
PP Preform Mould is designed for high-volume injection molding of polypropylene preforms used in food packaging, household chemical containers, and industrial packaging applications.
Description
Overview
PP Preform Mould is designed for high-volume injection molding of polypropylene preforms used in food packaging, household chemical containers, and industrial packaging applications.
The mold is engineered for stable multi-cavity performance, consistent dimensional control, and long-term operation under continuous production conditions.
It is suitable for manufacturers requiring stable output, predictable cycle time, and low maintenance downtime.
Technical Specifications
|
Technical Parameter |
Specification Details |
|
Cavity Range |
4 / 8 / 12 / 24 / 48 / 72 / 96 (Fully Customizable) |
|
Mold Steel Type |
DIN 1.2344 / S136 / 420 Stainless Steel (Heat-treated to HRC 48-52) |
|
Runner System |
Patented Valve Gate Hot Runner / Cold Runner Optional |
|
Tolerance Control |
≤0.05mm eccentricity (Core-to-cavity alignment) |
|
Weight Tolerance |
Within 0.1g |
|
Mold Life |
>2,000,000 shots (Under standard maintenance) |
Key Performance Features
Cycle time reduction (10–15%) observed under internal comparative testing using identical mold configurations with different cooling channel designs.
Extends production longevity up to 2 million shots by using vacuum-quenched DIN 1.2344 stainless steel hardened to HRC 48-52.
Controls preform weight tolerance within 0.1g and eccentricity within 0.05mm using a pneumatically controlled valve gate hot runner system.
Eliminates common PP production defects like gate drooling, stringing, and heavy welding lines via precise independent valve pin shut-off.
Safeguards long-term operations with 100% interchangeable cavities, cores, and neck rings machined on high-precision Makino CNC lines.
Why Choose Us
Experience
16+ years in preform mold engineering and manufacturing
Production record
40,000+ cavity molds delivered globally
Export markets
30+ countries including Spain, Canada, Brazil, Turkey, Indonesia, and others
Engineering focus
Multi-cavity stability design and hot runner system optimization for industrial production
Manufacturing base
Huangyan, Taizhou (major industrial cluster for mold manufacturing in China)
Quality Control & Factory Testing
Before dispatch, every PP Preform Mold undergoes a mandatory 2-hour continuous, full-speed automatic trial run at our facility. We provide overseas buyers with comprehensive T1 testing video footage, a full 3D CMM dimension report, and physical preform samples for final local verification before packing.
Design and Engineering Support
Engineering support is provided during the design stage to reduce production risk after installation:
Preform weight and geometry optimization based on application requirements
Cooling system layout review for cycle time stability
Hot runner configuration adjustment based on cavity number and machine type
Machine compatibility evaluation before mold production
Export Packaging & Spare Parts Support
Protection system: Molds are treated with anti-corrosion coating, wrapped in protective film, and secured in reinforced export-grade wooden cases.
Spare parts kit: Each mold is shipped with standard wear parts including seals, heating elements, thermocouples, and nozzle components (based on configuration).
This is intended to reduce initial downtime during installation and commissioning.
FAQ
Q: What machines is this mold compatible with?
A: The mold can be designed to match major injection molding machine brands such as Husky, Netstal, Sipa, and other standard Chinese or international systems.
Machine compatibility is confirmed during the mold design stage based on technical drawings and interface requirements.
Q: How do you ensure cavity-to-cavity consistency?
A: Consistency is controlled through CNC precision machining, EDM finishing, and CMM dimensional inspection.
Each cavity is measured to ensure critical dimensions remain within controlled tolerances before assembly.
Q: What is the typical mold life?
A: When operated under standard production conditions and following our recommended preventive maintenance protocols, the heat-treated tool steel components are designed to deliver a reliable service life of over 2,000,000 injection cycles.
Q: Can the mold be customized for different preform weights?
A: Yes. Preform weight, neck finish, and cavity layout can be customized according to bottle design and production requirements.
Engineering support is provided during the design stage to match product specifications.
Q: Do you provide trial molding before delivery?
A: Yes. Every mold undergoes a mandatory 2-hour continuous full-speed automatic trial molding session before shipment to verify cavity balance, part weight consistency, and hot runner thermal performance. Testing video and sample reports are provided for buyer approval.
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