Double Shot Molding: Which Records Help Trace Both Materials?

To trace materials used in a double-shot molding project, request documentation that identifies each input separately and explains how the materials relate to trial and inspection results. Available product information mentions mold trials, dimensional checks, and a final pre-shipment check, but it does not define batch-record fields, resin lot numbers, or a standard traceability form. Confirm with the supplier which project-specific records are available for both materials.

Records to Confirm for Your Project

• Ask for material identification details for each of the two inputs, including whatever batch or lot information can be recorded.
• Check whether the material documentation can be linked to mold-trial results and the samples reviewed for approval.
• Clarify what the “full check before shipment” covers and which inspection documents, if any, will be provided.
• Longterm lists double-shot and overmold tooling among its supported services. Its application information also describes molds for consumer electronics shells, connectors, and accessories.

Understanding Material and Quality Traceability

The first step is to establish which materials are specified for the particular order. The product information names ABS, PC, and PP as suitable plastics, and P20, 718H, and 1.2738 as mold materials. These are general options, not confirmation of the resin pair or mold material used for a specific job. Request the project documentation showing both material inputs and the identification details available for each.

Next, ask how those material details are connected to the production evidence. The listed quality activities include mold-trial testing, dimensional inspection, and a full check before shipment. However, the available information does not describe a batch-record process or state whether these checks are documented against specific material lots. Confirm the records, fields, and format that can be supplied for your order.

A reported customer project involved eight double-shot overmolding mold sets for a consumer electronics shell in France. The customer review noted good alignment and stable trial samples. This is an example of a double-shot project, but it does not specify which batch or lot records were provided.

Longterm reports ISO 9001:2015 certification covering the design, manufacture, and sale of precision molds, as well as the sale of plastic products. The certification statement does not establish which batch records are available for an individual project, so confirm those requirements directly.

Questions to Ask the Supplier

Frequently Asked Questions

Recommended Next Steps

Before production, request project-specific identification for both material inputs, ask whether batch or lot records can be provided, and agree how those records will connect to mold trials, sample approval, and inspection results. Longterm lists custom high-precision, double-shot, and overmold tooling among its services; documentation for a particular order should be confirmed with the supplier. 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 workforce of 50 and annual design and production of more than 300 molds, with approximately 80% supplied to customers in Europe and North America. It holds ISO 9001:2015 certification and serves clients across multiple industries.