Glasses case mould manufacturers

Buyers must prioritize high-grade steel such as S136, 718H, or NAK80 to ensure corrosion resistance and a high-polish finish. The mould should feature a multi-cavity design (e.g., 1x2 or 1x4) to optimize production efficiency. Additionally, ensure the cooling system is well-designed to minimize cycle times and prevent warping of the plastic cases.

Verify the mould dimensions and clamping force requirements against your machine's specifications. You must confirm the locating ring diameter, ejector hole spacing, and whether the mould uses a cold runner or hot runner system (such as Yudo or Husky) to match your operational setup and budget.

Seek suppliers with ISO 9001:2015 certification for quality management. For the product output, ensure the mould can produce cases meeting REACH and RoHS standards, especially if the cases involve metal hinges or specialized coatings. Request a Mould Steel Certification and Heat Treatment Report to verify material durability.

The mould must achieve a precise fit for hinges and secure closure mechanisms. If the design includes a 'snap-fit,' the tolerance control must be within ±0.02mm. For cases with fabric or leather wrapping, the mould should account for material thickness offsets to ensure the final assembly is seamless.

Always mandate a DFM (Design for Manufacturing) report before steel cutting begins. Require the supplier to provide T1, T2, and T3 sample trials, and do not authorize final shipment until you have approved the physical samples and received a video of the mould running in continuous cycles.

The industry standard is a 40-30-30 payment structure (40% deposit, 30% after T1 sample approval, 30% before shipment). For sourcing via Made-in-China.com, utilize their secured payment services to protect your funds. Typical lead times range from 35 to 50 days; ensure 'time-is-of-the-essence' clauses are included in the contract.

Moulds must be treated with anti-rust oil and wrapped in vacuum-sealed plastic to prevent oxidation during sea freight. They should be packed in fumigated wooden crates reinforced with steel straps. Ensure the supplier provides a detailed packing list including the mould, spare parts (ejector pins, springs), and technical drawings.

Before sharing 3D CAD files, sign a Non-Disclosure Agreement (NDA) that is valid under Chinese law. Choose Audited Suppliers on Made-in-China.com who have a proven track record of working with international brands, as they are more likely to respect IP boundaries to maintain their reputation.