Double Shot Molding Traceability: Which Material Records Should You Request?

When ordering double shot molding, make sure the project documentation identifies both material inputs and clarifies how each relates to trial results, sample approval, and inspection. The available product information names several quality checks, but it does not define batch-record fields, resin lot numbers, or a standard traceability form. Ask the supplier which material-level records can be provided for your specific order.

Start with Project-Specific Material Identification

The listed suitable plastics include ABS, PC, and PP, while P20, 718H, and 1.2738 are named as mold materials. These options do not establish which plastics will be used together on a particular double-shot job. Request the project specification showing both material inputs, along with whatever identification details the supplier records for each one.

In particular, confirm whether the documentation includes batch or lot identifiers. The supplied information does not state that resin lots are tracked or that a batch-record template is available, so do not assume either is included.

Connect Material Records to Quality Checks

Longterm lists mold-trial testing, dimension inspection, and a full check before shipment among its quality checks. However, the stated information does not define the forms, measurements, or records covered by those checks. Ask which inspection documents will be supplied and whether they can be linked to both materials and the samples reviewed.

A reported project involved eight double-shot overmolding mold sets for a customer in France, intended for a consumer electronics shell. The customer feedback noted good alignment and stable trial samples. This is an example of the company’s double-shot work, but no details are given about the batch records supplied for that project.

Records to Confirm with the Supplier

Questions About Traceability

Are batch records confirmed as part of the service?

No. The product information mentions mold trials, dimensional inspection, and a full check before shipment, but it does not confirm batch records or lot tracking. Verify availability and format directly with the supplier.

Which plastics should I verify?

ABS, PC, and PP appear in the list of suitable materials. The material pair for an individual order is not specified, so check the project documentation for both inputs.

How long may a complex mold take?

The listed lead time for a complex precision mold is 35–45 working days. Confirm the schedule for your project, including the timing of inspection documents.

Agree on Documentation Before Production

Before the order proceeds, request material identification for both inputs, confirm whether batch-level records are available, and agree how the documentation will connect to mold trials, sample approval, and inspection results. Longterm lists high-precision custom, double-shot, and overmold tooling among its business offerings, but records and formats 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 founded in 2010, serving customers in the United States, Europe, Australia, and other international 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 annually, with approximately 80% supplied to customers in Europe and North America. It holds ISO 9001:2015 certification and serves clients across multiple industries. The certification covers the design, manufacturing, and sales of precision molds and the sales of plastic products; it does not specify the batch records provided for an individual project.