Molds, Tools and Dies, Hot Runner Systems
At CMC we service the plastic tooling industry by providing Electroless Nickel, Nickel PTFE, Ceramic Nickel, PVD, and DLC processes. All these coatings and combinations for molds and mold components provide reductions in cycle time, easier mold filling, greater wear resistance, reduced demolding forces, and increased productivity.
Only a few micrometers thin, PVD PAPVD coatings such as TiN, TaC, TiAlN, TiZrN, TiAlCN, CrN, CrCN, and DLC are useful tools for mold makers and molders. Their high hardness combined with a low friction coefficient imparts abrasive wear resistance, while their ceramic composition resists corrosion and enhances mold release.
Key applications of coatings offered by CMC include ejector guide elements, cavities, and cores where the coatings’ tribological properties protect against seizure and corrosion. The coatings’ hardness and wear resistance protect molds from highly glass or mineral-filled resins, as well as hot-gas corrosion from materials like PVCs and CPVCs.
- Improved demolding
- Improved part quality
- Longer tool life
- Reduced tool maintenance
- Wear, corrosion, and oxidation resistance.
These specialty coatings are well suited for coating molds that work in plastics that, during processing, outgas chlorine, fluorine, or other aggressive volatile contents, including polyolefins (PE, PP, PB), acetal resins (POM), polyamides (PA), linear polyesters (PC) and polyaryis/polysulphones (PPE, PEEK, PAEK/PPS, PSU, PES).
Molds, Tools & Dies
CMC coatings, when used in the plastic tooling industry:
- Extend product lifespan
- Facilitate easier demolding
- Reduce residue and polishing requirements
- Increase fluidity and performance of forming material
- Lessen wear and abrasion resistance
- Shorten cycle time
- Diminish mold adhesion
- Improve injection pressure, melt flow, and mold filling and
- Enable dry or lubricant-free operation.
- Plastic injection molds
- Cavities & cores
- Ejector pins
- Blow molds
- Rubber molds
- End mills
- Razor blades
- Carbide inserts
- Wrist pins