Eva mould case

The hardness of EVA (Ethylene-Vinyl Acetate) is measured in Shore C. For standard consumer electronics, a hardness of 65-75 Shore C is recommended to balance structural rigidity with shock absorption. For heavy-duty industrial equipment, look for 80 Shore C or higher to prevent compression under weight, while delicate instruments may require a softer 30-50 Shore C inner lining to prevent surface scratches.

Buyers should prioritize heat-pressing molding technology which ensures the case maintains its shape over time. Key specs include water-resistant 1680D Nylon or PU leather outer laminations, YKK or waterproof zippers for durability, and internal mesh pockets with elastic bands for secure component storage. Ensure the wall thickness is at least 5mm for adequate drop protection.

Since EVA is a chemical polymer, it must comply with REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for the EU market and RoHS to ensure it is free from hazardous substances like lead or cadmium. For cases intended for medical or children's products, verify FDA-grade materials or CPSIA compliance to ensure the material is non-toxic and odorless.

A professional manufacturer should offer custom CNC foam inserts or die-cut EVA foam tailored to your product's dimensions. Ask if they provide logo application methods such as silk-screen printing, heat transfer, embossing, or rubber labeling. High-tier suppliers on Made-in-China.com usually provide 3D mockups or CAD drawings before opening the physical steel mould.

The primary risk is mould ownership and durability. Always clarify in the contract that the mould fee (Tooling cost) paid by the buyer grants the buyer exclusive rights to that design. Ensure the supplier guarantees a mould life of at least 10,000 to 50,000 units and confirm whether the mould fee is refundable once cumulative order volume reaches a certain threshold.

EVA cases are lightweight but high-volume, leading to high volumetric weight charges. To optimize logistics, request the supplier to nest smaller cases inside larger ones if purchasing a set. For large sea freight shipments, negotiate FOB (Free On Board) terms to maintain control over your freight forwarder and ensure the use of high-cube (HC) containers to maximize space utilization.

Utilize the Secured Trading Service on Made-in-China.com to protect your payment until goods are received and inspected. Never wire the full amount upfront; a standard 30% deposit and 70% balance against the Bill of Lading (B/L) or after a third-party pre-shipment inspection (PSI) is the industry best practice to mitigate quality risks.

Focus on the ventilation system of the factory, as poor EVA processing can lead to a strong chemical odor in the final product. Verify the presence of automated hydraulic pressing machines and a dedicated QC station for zipper tension testing and drop testing. Checking for ISO 9001 certification on the supplier's profile is a reliable indicator of consistent management.