Vacuum Resin Infusion Molding (VRIM)
This process utilizes two molds, a core and cavity that we produce internally. These composite molds are typically produced from polyester, vinyl ester, or epoxy tooling resins.

The fiberglass reinforced composite product is fabricated by placing glass mat, typically a combination of chopped and continuous strand mats, into the mold cavity. The core mold is fitted to the cavity and a vacuum is applied. Upon achieving the proper vacuum, resin is then injected into the mold. The part is then allowed to cure. Cure times vary from 45 to 60 minutes depending on part thickness. The part is then removed from the mold and trimmed to shape. If a cosmetic surface is required on the “A” side surface, the cavity will be gel-coated prior to introducing the glass and resin.

This process yields parts with very high strength due to the resin glass ratio, and these parts can be used as both finished products or as parts for further assembly. Part sizes vary from a few pounds to over a hundred pounds. And this process is well suited for annual volumes ranging from 1000 to 5000 units.

Compression Molding
Fiberglass reinforced products are produced by inserting a molding compound between the core and cavity of matched die metal molds and then subjecting them to high pressures with hydraulic presses. Products produced through this process have very good dimensional uniformity and thickness consistency. This process is typically used for higher volume products to justify the investment in the matched die tooling. Core currently produces compression molded products with both sheet molding compound (SMC) and long fiber thermoplastics (LFTP).

Sheet Molding Compound (SMC)
(See Sheet Molding Compound for more)
In this process, the SMC is introduced between the matched die molds and in the process the molds are maintained at approximately 300°F to accelerate the cure during the pressing cycle.

To enhance the surface quality and paint-ready finish of products, Core uses both vacuum and an in-mold coating system for cosmetic parts. This process produces both finished products or parts that would be used in subsequent assemblies. Part weights range from a few pounds to over one hundred pounds.

Long Fiber Thermoplastics
In this process, the LFTP, which is a combination of glass and thermoplastic resin, is introduced between the matched die molds and the molds are maintained at approximately 140°F to facilitate the forming of the part during the pressing cycle. Parts produced in this process are high strength and more structural than cosmetic. Part weights range from a few pounds to around one hundred pounds.