Securing Inserts in Molds with Instant Adhesive Precision

  • Post last modified:November 16, 2025

In injection molding, securing threaded inserts, pins, magnets, or complex cores accurately within the mold cavity is a crucial step. A shifting or improperly aligned insert leads to scrapped parts, significant downtime, and high material waste. The adhesive used for temporary fixturing must be fast-curing to keep pace with production, yet strong enough to resist the initial forces of resin injection and hold its position under pressure.

Don’t let a loose insert ruin your production cycle and product quality.

INCURE GapFill™ D01 General Purpose Instant Adhesive for Quick, Strong Bonds

The INCURE GapFill™ D01 is a low-to-medium viscosity general-purpose cyanoacrylate that provides the perfect balance of instant speed and sufficient anchoring strength required for mold insert fixturing. It creates a temporary, strong bond that holds the insert precisely in place until the molten resin encapsulates it, ensuring perfect alignment and maximum operational efficiency.

Feature & BenefitTechnical Insight for Mold FixturingConversion Value
Ultra-Fast Fixturing SpeedAchieves handling strength almost instantly, minimizing the delay between insert placement and mold closure/injection.Boost Cycle Time: Keep production moving without waiting for slow-curing epoxies.
General Purpose VersatilityBonds well to most common insert materials (metals, engineered plastics) and mold materials (steel, aluminum).Universal Compatibility: One solution for fixturing various insert and mold types.
Low Viscosity OptionThe adhesive can wick into tiny crevices or apply as a very thin film, preventing excess material from interfering with the final part finish.Clean Operation: Ensures a minimal, clean bond line that doesn’t flash or affect the final molded part.
Sufficient Holding PowerProvides enough initial strength to withstand the high pressures and shear forces during the resin injection phase.Zero Movement: Guarantee the insert remains exactly where it’s supposed to be until the plastic cures around it.

Application Steps: Precision Anchoring of Mold Inserts

Preparation (Focus on the Anchor Point): The contact surfaces of both the insert and the mold recess must be perfectly clean. Use a quick-drying solvent (like acetone) to remove any mold release agents, oils, or dust that could inhibit instant adhesion.

Application: Apply a tiny dot or a very thin line of the GapFill™ D01 adhesive only to the non-critical area of the insert—the surface that will be fully covered by the plastic and doesn’t affect the mold surface finish.

Assembly: Immediately place the insert into the mold cavity. Hold pressure for 5 to 10 seconds to establish the instant bond.

Injection: The mold is now ready for closure and resin injection. The cured adhesive will hold the insert steadfastly until the final molded part is ejected.

Stop risking misaligned parts and maximize your molding precision.