Resin Coated Sands

Shell Process

The Shell Process is better than ever today as it remains the world’s predominant core making process. HA-International is proud of its leadership position in the development of innovative shell resin and resin coated sand products.

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Advantages of the Shell Process

In today's environmentally conscious world, the Shell Process provides workers with numerous operating advantages:

• Shell Process products contain low or no formaldehyde.
• Shell Process molds and cores remain usable indefinitely and are un affected by high humidity storage.
• Shell cores can be made hollow resulting in significantly lighter weight and lower cost cores.
• Hollow cores and light weight shell molds burn more completely, and yield waste sands that contain less organics.
• High strength cores and molds yield castings with precise dimensional tolerances.

Evolution of Foundry Shell Sand for Today's Foundry

Simple Solutions That Work - (Issue 9, September 2018)

The Shell Sand process or "Croning" process was invented by Dr. Johannes Croning in Hamburg, Germany in 1944. This process is the oldest core and mold making technology that utilizes synthetic resins. Although many additional sand core and molding making technologies have since been introduced, the Shell Sand process is still a very effective core and molding process today.

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