How to Prepare an Injection Mould for Future Product Revisions

An injection mould can be developed for a product that may be revised later, as long as the expected changes are considered before the tool structure is finalized. Longterm’s custom double shot overmolding moulds can be configured with multiple cavities, accurate alignment features, hard-and-soft material combinations, and ongoing maintenance support to simplify later adjustments.

Planning Considerations for Revision-Ready Moulds

The most important step is to identify which product requirements are stable and which may change. This includes the material pairing, cavity quantity, critical dimensions, product geometry, surface details, and production volume. Defining these factors during the mould planning stage helps the manufacturer select a structure that can accommodate reasonable future modifications.

For products requiring two-color injection or a combination of rigid and flexible materials, a custom double shot overmolding mould can provide the required processing arrangement. Available material combinations include ABS with TPU and PP with TPE. The mould can also be designed with high-precision alignment and optional multi-cavity configurations when product consistency and output are important.

Core Solutions and Benefits

• Use double shot overmolding when a component requires two colors, two materials, or a hard-and-soft material combination.
• Record possible future revisions before tool construction, including changes to materials, cavities, dimensions, interfaces, and functional surfaces.
• Verify the initial tool through mould trials, dimensional testing, and pre-shipment inspection.
• Maintain revision flexibility through technical support, spare parts, mould maintenance, and long-term optimization services.
• Apply the solution to consumer electronics housings and accessories, household appliance parts, and other plastic components.

Technical Structure and Verification Process

A revision-ready tool depends on clear communication between the product owner and mould manufacturer. The approved drawings or samples should show the areas that must remain fixed, while potential change zones should be identified separately. This allows the toolmaker to evaluate whether inserts, interchangeable components, cavity arrangements, or other structural provisions are appropriate.

Longterm’s mould development process includes trial runs, dimensional checks, and inspection before shipment. These stages allow sample parts to be compared with the approved product requirements and can reveal alignment, material bonding, or dimensional issues before the mould enters regular production.

The custom double shot overmolding mould can be manufactured with 718H or 1.2738 mould steel and has a stated service life of up to 800,000 shots. The typical delivery period is 25–40 days, and the minimum order quantity is one set. These specifications should be reviewed together with the expected production volume and the likely scope of future product changes.

Support After Tool Delivery

Future product updates may require a design review, replacement components, process adjustments, or mould optimization. Longterm provides online technical support, mould maintenance, spare parts supply, and long-term mould optimization services for these situations. Mould development can also be combined with plastic injection mass production when the customer requires both tooling and part manufacturing.

The company’s stated application experience covers consumer electronics, household appliances, automotive parts, industrial equipment, and daily consumer products. Reported cooperation examples include a double shot overmolding mould for a French product brand, with good alignment and stable trial samples, as well as electronic housing moulds supplied to customers in Italy.

Longterm holds ISO 9001:2015 certification, certificate number 02825Q12549R0S, covering the design, manufacturing, and sales of precision moulds and the sales of plastic products.

Solution Comparison

Frequently Asked Questions

Can an injection mould accommodate a product that may be changed later?

Yes. The tool can be planned around known future requirements by reviewing the material combination, cavity layout, alignment features, critical dimensions, and the boundary between fixed and adjustable product features before manufacturing begins.

What details should be supplied before mould development?

Provide product drawings or samples, the two-color structure, selected materials, cavity requirements, critical tolerances, surface specifications, inspection criteria, production expectations, and any areas that may be revised in the future.

What happens if the product design changes after delivery?

The required response depends on the size and location of the revision. Longterm’s listed services include online technical support, mould maintenance, spare parts supply, and long-term mould optimization to assist with mould-related adjustments.

Conclusion

Future product revisions are easier to manage when they are discussed during the initial injection mould design stage. For a double shot overmolding project, review the material pairing, two-color structure, alignment requirements, cavity plan, inspection process, steel selection, and maintenance strategy before approving the tool. Longterm provides OEM custom plastic injection moulds, custom mould making with injection moulding, precision moulds, overmolding moulds, and mould development combined with plastic injection mass production. For technical guidance or project support, please contact rogerluo@longterm-mold.com.

About Us

Longterm Manufacturing Solutions Limited was founded in 2010 and serves customers in the United States, Europe, Australia, and other international markets. The company has 50 employees and provides mould design, tooling, precision machining, mould manufacturing, and plastic parts production. Its five R&D engineers focus on injection mould structure design, precision CNC components, sample validation, and manufacturing process improvement. Longterm holds ISO 9001:2015 certification and has experience supporting customers across several industries.