Medical Devices
High-precision stack molds for syringes, vials, and diagnostic equipment, ensuring strict tolerance and cleanroom compatibility.
Room 101, Jiumo Technology Park, Gangsheng Road, Yabian Village, Shajing Street, Baoan District, Shenzhen City
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Our engineering team will review your DFM requirements and respond within 24 hours.
Advanced Stack Mold
Manufacturer
Multiply your production capacity without expanding machine footprint. GBM engineers high-precision, multi-level stack molds designed for maximum efficiency, delivering ±0.002mm accuracy for high-volume manufacturing.
What are Stack Molds?
Advanced Injection Technology
Redefining High-Volume Manufacturing
A stack mold is a highly efficient precision injection molding tool engineered with two or more parting surfaces. Unlike standard single-face molds, stack molds allow multiple layers of cavities to be filled simultaneously during a single injection cycle.
By stacking the molding surfaces, this innovative engineering maximizes productivity without requiring a larger machine footprint, making it the ultimate solution for high-volume, cost-sensitive production runs.
x2
Production
Capacity
Increased Output
Double or even quadruple your production capacity within the exact same cycle time. Drastically lower your per-part manufacturing costs while meeting high-volume demands effortlessly.
Space Efficiency
Achieve massive production volumes without the need to invest in larger tonnage injection molding machines, saving valuable factory floor space and reducing capital expenditure.
Comprehensive Mold Capabilities
Delivering engineered solutions across a wide spectrum of complex injection molding requirements.
Multi-Cavity Molds
High-volume production solutions ensuring consistency across 32, 64, or 128 cavities.
Unscrewing Molds
Automated thread creation for caps, closures, and threaded industrial components.
Hot Runner Systems
Optimized material flow, reduced waste, and faster cycle times for large parts.
Standardized Execution Process
From concept to mass production, our rigorous workflow guarantees quality at every step.
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Automotive Components
Durable injection molding solutions for interior trim, lighting housings, and complex under-the-hood exterior parts.
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Consumer Electronics
Complex multi-cavity molds for housings, precision connectors, and smart device enclosures requiring ±0.002mm precision.
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Packaging Industry
High-volume, rapid cycle production molds designed for caps, closures, and thin-wall plastic containers.
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Industrial Equipment
Robust injection molded parts engineered to withstand heavy-duty industrial applications and extreme environments.
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Home Appliances
Precision molds for structural components and aesthetic outer covers, delivering flawless surface finishes.
Why choose GBM for your
Stack Mold?
Partner with an industry leader committed to delivering high-precision, cost-effective, and durable stack mold solutions tailored to scale your production capabilities.
Decades of Expertise
Over 10 years of specialized experience in designing and manufacturing complex multi-level mold structures for global clients.
Guaranteed Precision
Operating under strict ISO9001/TS16949 standards with state-of-the-art equipment to ensure ±0.002mm tolerance on critical dimensions.
Accelerated Capacity
In-house manufacturing capabilities providing 24H DFM feedback and expedited T1 sampling in as fast as 15 days.
In-House Manufacturing Excellence
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Stringent Quality Control
CMM inspection and strict adherence to ISO guidelines at every production phase.
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Advanced Equipment Fleet
Imported high-speed CNCs and precise EDM machines ensuring superior surface finishes.
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Dedicated Engineering Team
Over 30 senior mold designers and project managers providing seamless communication.
| Equipment Type | Brand / Origin | Quantity | Precision / Specs |
|---|---|---|---|
| High-Speed CNC Machining Center | Makino (Japan) | 5 | ±0.005 mm |
| Mirror Spark EDM | Sodick (Japan) | 8 | Ra 0.1 / ±0.003 mm |
| Wire Cut EDM | Seibu (Japan) | 6 | ±0.002 mm |
| CMM Inspection Machine | Hexagon (Sweden) | 2 | ±0.0018 mm |
| Injection Molding Machines | Haitian / Engel | 25 | 90T - 1200T |
Trusted by Global Industry Leaders
Global Presence
Connecting with partners worldwide at major industry exhibitions.
Certified Quality Systems
Our commitment to excellence is backed by international standards.
Understanding Stack Mold Technology
Doubling Output, Not Footprint
A stack mold utilizes two or more parting lines, effectively placing molds "back-to-back" within the same injection molding machine. This innovative design allows manufacturers to double or even quadruple output without requiring a larger tonnage press.
By optimizing the opening stroke and utilizing advanced hot runner systems, stack molds distribute the melt evenly across multiple levels, drastically reducing part cost while maintaining exceptional dimensional stability.
Overcoming Capacity Bottlenecks
The core challenge in stack mold manufacturing lies in the synchronization of the mold opening mechanism and the precise balancing of the hot runner system. GBM utilizes heavy-duty rack and pinion or harmonic linkage systems to ensure smooth, simultaneous opening of all parting lines.
- Customized hot runner manifolds for balanced melt flow.
- Rigid center block design to prevent deflection.
- Optimized cooling circuits for fast cycle times.
Frequently Asked Questions
Have technical questions about implementing a stack mold for your next project? Our engineering team is ready to assist.
What tonnage machine is required for a stack mold?
While a stack mold doubles the cavities, it only requires about 10% to 15% more clamp tonnage than a standard single-face mold of the same projected area, primarily to account for the increased runner system and center block weight. However, the machine must have sufficient opening stroke and shot capacity.
Can stack molds be used for multi-material (2-shot) molding?
Yes, stack molds can be engineered for 2-shot applications. This usually involves a rotating center block (cube mold) where the first material is injected on one parting line, the block rotates, and the second material is injected on the opposite parting line.
What is the typical lead time for a custom stack mold?
Due to their complexity, standard stack molds typically require 6 to 10 weeks from design approval to T1 sampling. Expedited options are available depending on project specifics and current factory capacity.
How do you ensure balanced filling across all levels?
We utilize advanced Moldflow analysis during the DFM stage to design a naturally balanced hot runner manifold. Precise temperature control and gate sizing ensure uniform melt pressure and filling across all cavities simultaneously.
Get In Touch
Contact Our Engineering Team
Send us your 2D/3D drawings for a comprehensive DFM and quotation within 24 hours.
Email Us
Annie@gbminjection.comCall Us
+86 15268369865Factory Address
Room 101, Jiumo Technology Park, Gangsheng Road, Yabian Village, Shajing Street, Baoan District, Shenzhen City
- ISO9001 & TS16949 Certified
- Strict NDA Protection