Customized Aluminum Alloy EPS Shape Foam Mould Expandable Polystyrene Airpop 20L Box Mould

This custom-engineered aluminum alloy EPS foam mold is designed specifically for producing 20‑liter expandable polystyrene (EPS) boxes, commonly used in Airpop packaging systems for temperature‑sensitive shipping. The mold is fabricated from high‑grade aluminum alloy, selected for its thermal conductivity and resistance to steam corrosion, supporting consistent bead expansion and uniform wall thickness across large‑format box geometries. Cavities are precision‑machined to customer specifications, with fill ports, venting slots, and cooling circuits arranged to ensure complete cavity fill and clean pattern release. The tooling is compatible with standard EPS shape molding machines and is built to withstand the thermal cycling of high‑volume production. Designed for durability and dimensional repeatability, this mold produces lightweight, rigid 20L foam boxes with smooth internal and external surfaces.

We can make EPS mould for any EPS products like electrical products packaging, boxes, EPS pallets, construction panels, ICF etc.

Choosing the right EPS Foam Mould partner is crucial. We go beyond simply supplying a mold; we offer comprehensive support from initial design consultation and material selection guidance through mold commissioning and troubleshooting. Our commitment is to be your trusted partner, ensuring your EPS molding project achieves optimal quality, efficiency, and return on investment.

• Aluminum Alloy Construction for Thermal Efficiency
  The use of aluminum alloy ensures rapid heat transfer during steam injection and quick cooling, enabling controlled bead fusion and reducing cycle‑to‑cycle variation in box dimensions.
• Precision‑Machined Sealing Surfaces
  Cavity edges and closure faces are machined to produce boxes with tight‑fitting lids or interlocking edges, reducing post‑molding trimming and improving stacking performance.
• Corrosion‑Resistant Surface Treatment
  The aluminum body is treated to withstand repeated exposure to steam and condensation, extending tool service life and preserving cavity surface finish.
• Modular Split‑Block Assembly
  The mold is constructed from separate cavity blocks and removable inserts, facilitating straightforward mounting on molding presses, cleaning, and component replacement without full disassembly.

• Cold Chain Food Packaging – Producing 20L EPS boxes for shipping fresh produce, seafood, and frozen goods, where thermal insulation and structural integrity are required.

• Pharmaceutical Transport Containers – Molding EPS boxes for temperature‑controlled delivery of vaccines, biologics, and lab samples, with consistent wall thickness for predictable thermal performance.

• E‑Commerce Protective Shipping – Manufacturing lightweight foam boxes for fragile electronics, instruments, and luxury goods requiring high‑impact protection.

• Industrial Component Shipping – Producing large foam containers for automotive parts, machinery components, and oversized industrial spares.

• Reusable Packaging Systems – Creating durable EPS boxes for returnable logistics programs, with reinforced edges and consistent dimensions for automated handling.

1. High Precision Processing Machine - Make Tolerance ≤ 5um. Positional Accuracy can be controlled within ± 2um for some workpieces
2. High quality - Passed the ISO9001:2008 quality system authentication and ROHS authentication
3. Superb workmanship - Get more than 20 Certificates

Flexible Shipping Options: We understand that every customer has unique needs. That's why we offer flexible shipping options, including air freight, sea freight, and expedited delivery services. Our team will work with you to determine the most cost-effective and efficient shipping method based on your timeline and budget.

• Geometry‑Specific Engineering – We review your box design and provide practical recommendations on wall thickness distribution, vent placement, and parting line location to achieve consistent bead fill and structural performance.
• In‑House Manufacturing – Mold design, CNC machining, assembly, and pressure testing are all conducted within our facility, enabling direct communication and rapid response to specification changes.
• Material Guidance – We advise on EPS bead grades suitable for 20L box production, balancing density, thermal insulation, and impact resistance for your specific application.
• Trial Molding Service – We conduct sample runs using your specified EPS material and supply molded boxes with dimensional reports for your approval prior to mold delivery.
• Complete Documentation – Each mold is delivered with assembly drawings, steam and cooling circuit diagrams, spare parts lists, and a maintenance schedule for long‑term reliability.

Luoyang Liushi Mould Co., Ltd was established on 2001, which is National Standard Setting Unit for Lost Foam Casting Mould. The company is located in the Millennium Emperor, peony flower city of Luoyang City. We have 9800 office building, and 22000 workshop, which is well equipped with research, development, design, foundry, machining, assembly, surface treatment and other equipment. It's a Luoyang municipal R&D center and technology center.

Company technicians can provide on-site guide mould assembly, test production, free repair and complete technology for lost foam casting process according to customer demands. With the business philosophy of "careful design, lean manufacture, best service, perfect quality", we strive to provide satisfactory products and services for customers. After years of development, our company has become the preferred mould suppliers of many lost foam casting manufacturers and the exclusive supplier.