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Redefining On-Press Mold Cleaning in Cleanrooms with Foamtec’s Sahara+ Wiping System

by | Dec 12, 2023

In the world of injection molding for medical devices and pharmaceutical applications, cleanliness and precision are paramount. Effective mold cleaning is essential to meet the stringent quality standards in cleanroom facilities. Foamtec’s Sahara+ Wiping System is revolutionizing on-press mold cleaning by combining the unique properties of Sahara foam and the precision of MiraWIPE microfiber wipers. In this blog, we’ll explore how this innovative system enhances mold cleaning in injection molding facilities operating in cleanrooms.

The Challenge of Mold Build-Up

Cleanrooms that produce components for medical devices and pharmaceuticals require molds to be pristine. However, molds often accumulate mold release build-up, resin plate-outs, and even light rusting during the injection molding process. This build-up can be particularly challenging to remove while the mold is still warm and in the press.

The Solution: Foamtec’s Sahara+ Wiping System

Foamtec’s Sahara+ Wiping System is designed to address the challenges of on-press mold cleaning in cleanrooms. Here’s how it works:

  1. Sahara Foam’s Solvent Delivery: The Sahara foam, constructed from super-strong polyurethane sponge material, excels in holding and delivering solvent to hot molds. This unique ability ensures that the cleaning solvent effectively breaks down mold release build-up and resin plate-outs, even when the mold is warm.
  2. Scratch-Free Scrubbing Performance: Sahara foam provides scratch-free scrubbing, enhancing the removal of resins and mold release without damaging the mold’s surface. This feature is critical in maintaining the precision and longevity of the molds.
  3. Conformance to Recessed Areas: Sahara foam’s flexibility allows it to conform to the mold’s contours, reaching into cavities and vents where residues may hide. This thorough cleaning ensures that no impurities are left behind.
  4. Final Cleaning with MiraWIPE: Once residues are loosened by Sahara foam, the final cleaning is carried out by Foamtec’s MiraWIPE, an abrasion-resistant microfiber wiper. MiraWIPE dislodges, entraps, and removes residues from the mold’s surface, guaranteeing maximum removal of impurities.
  5. Particle Prevention: Unlike other wipers that may snag and generate particles during cleaning, MiraWIPES abrasion-resistant fabric is production-proven to produce the cleanest tool surface, eliminating the risk of defective parts.

Medical Device Injection Mold with Resin Plate-Out Process Residue

Sahara Wipes easily removes the resin plate-out with only 70% IPA.


Maintaining impeccable mold cleanliness is non-negotiable in cleanroom facilities dedicated to producing components for medical devices and pharmaceuticals. Foamtec’s Sahara+ Wiping System is transforming on-press mold cleaning by combining the solvent delivery capabilities of Sahara foam with the precision and abrasion resistance of MiraWIPE microfiber wipers.

This innovative system ensures that molds remain in optimal condition, free from mold release build-up, resin plate-outs, and other contaminants. By choosing Sahara+ Wiping System, injection molding facilities can meet the highest quality standards, minimize part deformation risks, and maintain the precision of their molds, ultimately contributing to the production of safer and more reliable medical and pharmaceutical components.

Recommended Part Numbers:

Sahara Sponge Wipers: GS4836

MiraWIPE: HT5790SM