Multi Cavity Stack Injection Mold - Thin Wall Disposable Container Hollow Part Tooling

This industrial-grade multi-cavity stack injection mold is specifically engineered for the high-efficiency mass production of thin-walled disposable containers, such as food storage boxes, instant noodle bowls, or pharmaceutical trays. The mold features a sophisticated "1x24" cavity layout distributed across two parallel plates (a stack mold design), enabling manufacturers to produce 24 identical high-precision parts simultaneously in a single injection cycle. This configuration is the pinnacle of output efficiency for the disposable packaging industry.

Alternative Names & Working Principle:​

Commonly referred to as a "thin-wall mold," "stack mold," or "disposable container die," this equipment operates on advanced plastic injection molding principles. Thermoplastics such as PP (Polypropylene), PS (Polystyrene), or PET are heated to a molten state and injected at high velocity and pressure into the cavities via a hot runner system. The thin-wall design requires an ultra-fast injection speed to prevent the material from cooling and freezing before filling the cavity completely. Once the plastic cools and solidifies, the mold opens along precision-machined guide pillars, and an advanced ejection system expels the finished containers.

Material & Craftsmanship:​

The mold body is constructed from high-strength alloy steel, such as P20 or 718H, offering excellent durability and dimensional stability under extreme temperatures and pressures. To facilitate the rapid cooling required for thin-wall parts, the mold features a highly efficient conformal cooling system with strategically drilled channels running close to the cavity surfaces. The metallic silver-gray finish of the mold frame reflects its robust industrial quality, while the presence of red anodized aluminum components—likely pneumatic actuators or hydraulic cylinders—indicates a high level of automation. The blue-colored hot runner manifold suggests a specialized temperature control system for precise melt delivery.

Performance & Features:

· Extreme Production Efficiency:​ The 24-cavity stack design significantly reduces the per-unit cost of production and maximizes the utilization of the injection molding machine, making it ideal for high-volume manufacturing.

· Rapid Cooling System:​ The advanced thermal regulation system, including copper or beryllium-copper inserts, ensures fast and uniform cooling, drastically reducing cycle times and preventing warping or sink marks on the thin walls.

· High-Speed Injection Compatibility:​ Engineered to withstand the rigors of high-pressure and high-velocity injection, this mold is optimized for thin-wall applications where material flow is critical.

· Precision Ejection:​ The integrated pneumatic or hydraulic ejection system ensures smooth and consistent part removal, minimizing the risk of deformation or damage during the release process.

Technical Specifications Reference:

Applications:​

Ideal for packaging companies and food service manufacturers, this mold is essential for producing lightweight, durable, and hygienic containers for food storage, takeout, and pharmaceutical use. Its ability to form complex shapes with thin walls in a single step makes it a valuable asset in modern, automated packaging lines.