Coated Metal Belts: FDA Compliant
Product Announcement from Belt Technologies, Inc.
Surface treatments give engineers the opportunity to alter the natural surface properties of a metal belt, tape, or pulley. Surface treatments may be applied to one or both surfaces of a belt or tape, or to a pulley. Application methods include coating, plating, laminating, and bonding.
Depending on the method selected, the thickness of a surface treatment may be as little as .002". The surface can be uniform or, to provide pockets on the belt surface for transporting small components, punched or die cut. Vacuum holes can be combined with pockets for more positive orientation and retention of delicate parts during transport.
For primary mechanical and physical characteristics of popular surface treatments, see Table 2 (Include Table).
TEFLON®: Teflon became a household word as a non-stick coating for cookware. Teflon is actually available in a variety of formulations, each having distinct operating properties regarding release characteristic, lubricity, resistance to abrasion, temperature range, and color.
ECLIPSE®: FDA compliant Eclipse coatings are high release and extremely wear resistant coatings. It's unique three-coat, high cure, internally reinforced, non-stick surface offers abrasion resistance over 10 times that of Teflon. It is household chemical resistant and features high non-stick properties, stain resistance and performance at high temperatures. It is different from all other non-stick coatings in that the basecoat contains a carefully chosen and blended combination of resins.
The midcoat, (actually a basecoat used in other reinforced systems), also contains the special reinforcing element, while the topcoat is rich in fluoropolymers, and is dedicated entirely to release properties (nonstick characteristic).
URETHANE OR NEOPRENE: Both urethane and open or closed cell neoprene change the surface coefficient of friction of a metal belt and also can act as a nest for delicate parts. These materials are securely bonded to a metal belt. Prior to bonding, they can be die cut when a specific pocket geometry is important.
SILICONE: When the environment is not suitable for other coatings, silicone may be a good option. Silicone has unique properties including a high friction surface, release properties, the ability to withstand elevated temperatures, and extreme flexibility. Bonding silicone to metal belts can be difficult, but workable solutions do exist.
OPTIONS: The range of options for surface treatments is so large that it cannot be fully documented in this guide. Unusual surface treatments have included fluorocarbon compounds, copper cladding, gold plating, and powdered diamond bonding. Appropriate specifications will be a function of application and technology. The Belt Technologies engineering staff will be pleased to discuss issues related to your specific needs.