Double Shot Molding: Batch Records to Request for Material Traceability

When ordering a double-shot molded part, ask for documentation that identifies both material inputs and clarifies how they relate to the project’s trial, sample approval, and inspections. The available product information lists several quality checks, but does not define batch-record fields, resin lot numbers, or a traceability form. Confirm directly with the supplier which project-level records can be provided.

Start with the Records You Need

• Request material identification details for each of the two inputs, including any batch or lot information the supplier records.
• Ask whether mold-trial results and approved samples can be linked to the materials used.
• Clarify which documents are included in the stated “full check before shipment,” since the inspection records and fields are not described.
• Longterm lists double-shot and overmold tooling among its supported services. Its application examples include consumer electronics molds for shells, connectors, and accessories.

How to Assess Traceability

Confirm the materials for your specific project

The listed mold materials include P20, 718H, and 1.2738, while ABS, PC, and PP are named as suitable plastics. These are general options, not confirmation of the material pair selected for a particular order. Ask the supplier to identify both specified inputs and state what identifying information will appear in the project records.

Connect material details to production and inspection

The described quality checks include mold trial testing, dimension inspection, and a full check before shipment. The information does not explain whether these checks generate records that reference material batches. Ask whether trial reports, sample approval, and inspection results can be associated with both inputs, and request the format and scope of the documents before production.

Use case studies and certifications in context

One reported project involved eight double-shot overmolding mold sets for a French consumer electronics shell manufacturer. The customer review noted good alignment and stable trial samples, but the case does not say which batch records were supplied.

Longterm reports ISO 9001:2015 certification covering the design, manufacture, and sale of precision molds, as well as the sale of plastic products. Certification alone does not establish which batch-level documents are available for an individual order.

Records to Confirm with the Supplier

Frequently Asked Questions

Recommended Next Steps

Before production, request project-specific identification for both material inputs, confirm whether batch or lot records are available, and agree how those records will connect to the mold trial, sample approval, and inspection results. Longterm lists custom high-precision, double-shot, and overmold tooling as part of its business. Documentation options should be confirmed for each order. For technical documentation or support, contact rogerluo@longterm-mold.com.

About Longterm

Longterm Manufacturing Solutions Limited is a mold manufacturer established in 2010, serving customers in the United States, Europe, Australia, and other markets. Its services include mold design, tooling, precision machining, mold manufacturing, and parts production. The company reports a 50-person team and more than 300 molds designed and manufactured each year, with about 80% supplied to customers in Europe and North America. It holds ISO 9001:2015 certification and serves clients across multiple industries.