Bunting® Flexible Dies Coatings
Bunting® Magnetics Co. now offers three new types of coatings to be used with our Flexible Die products. Bunting® recently developed an unrivaled new coating called Repel™. This economical coating provides a clear, non-stick finish that repels the most aggressive adhesives.
The Repel™ coating gives Bunting® a diverse range of coating options to offer our customers. Bunting® also has available our new Diamond and Black Diamond coatings which increase the hardness of our flexible dies to a level not measured by the world-renown Rockwell Scale for Hardness. Our customers have four choices to chose from because our standard process is to 100% chemically nickel harden our dies.
Repel™
This new innovative coating keeps the die very flexible and prevents adhesive or label material from embedding in the cavities of a die. It won’t flake off like other coatings do, giving our customers less downtime and better die cuts.
Repel™ gives Bunting® clients a strong silicone-based layer of protection for many different applications. Many tag and label manufacturers will use different types of foam in the production line to keep material from sticking in the cavity of the flexible dies they are using. The Repel™ coating reduces the need to use foam in some applications and helps manufacturers create a cleaner production environment and reduce their total cost. This coating is also suitable for cold foil applications. It reduces the likelihood that thin foil material will stick in the base of a die. The silicone base of the coating enhances foil release, from the tight fit typical of these applications.
Like cutting with diamonds
Our other options, Diamond and Black Diamond, increase the hardness of our flexible dies to a level not measured by the world-renown Rockwell Scale for Hardness. Also, the new coatings now give our customers three choices to chose from because our standard process is to 100% chemically nickel harden our dies.
These new coatings increase the hardness of our dies to over 2,000 on the Vickers Hardness Scale (over 80 on Rockwell C Scale). This allows our dies to run four times longer than ordinary dies.
Diamond
The Ultimate Choice for die cutting thermal transfer material.
- Quadruples the life of the die.
- Good hardness on flexible dies.
- Corrosion resistant.
- High resistance to cracking and chipping.
- Coefficient of Friction 0.35
- Microhardness 2000-2200
Black Diamond
The Ultimate Choice for reducing die lifting
- Ideal for small, tight corner die cutting applications.
- Improves performance of die cutting stamps and small images.
- Low friction allows flexible die to be used with aggressive adhesives without gumming up the dies.
- Coefficient of Friction 0.1
- Microhardness 2000-3000
Example of die lifting: 
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