- Polyester base TDI: This is our standard base of urethane. It has high resistance to cutting, tearing, chunking and oils. This material is best for most urethane applications.
- Polyether base TDI: This material is used for high speed and load bearing applications. It also resists attack by water and light.
- Polyester base MDI: This material is used for high load applications. We can also use this for elevated temperatures and extremely harsh environments.
- Polyether base MDI: This material is used in higher temperatures and when a water solution
is present.
- Specialty blend: We have a blended material using small portions of several of the above materials. This material has been formulated for coating and applicator rolls.
- Other materials available: Neoprene, hypalon, carboxylated nitrile, nitrile, silicone rubber.
(available from 10-100 shore “A” and 50-80 shore “D”)
- 30-40 shore”A”: Feels similar to a pencil eraser. Used primarily in the printing and coil coating industry. Also used in dual durometer applications for grip and cushioning.
- 70 shore”A”: Used for squeegee, pinch and bridle rolls. Also used for mandrel sleeves and a coating for dual durometer mandrel segments for grip and protection. Has a very high co-efficient of friction.
- 80 shore”A”: Used for bridle rolls and mandrel sleeves. Has a very good co-efficient of friction and has good memory for mandrel sleeves.
- 90 shore”A”: Used in our toughest applications where severe operating conditions are encountered. Does not quite have the grip of a 70 or 80 durometer but has the highest overall physical properties of our standard materials.
- 70 shore”D”: Feels similar to nylon. Used for expanding mandrel filler plates and urethane hammers. Used when a very hard yet elastic material is needed.
- Ground finish: This is the most common finish given for a urethane roll covering. This finish is achieved in our grinding operation using a smooth grit grinding stone. Grind finishes can be polished to a 30-50 RA finish for coating rolls. A standard RA finish for a roll would be
80-120 RA.
- Directional crepe finish: This is a finish developed by Universal Urethane primarily for bridle roll applications or where having a non-slip surface is important. This finish resembles crepe paper bumps and the skin of an orange. Crepe finishes are applied directionally, meaning your roll grips significantly better running with the crepe than against it. When crepe finish is specified, the directions of the roll must also be specified. Crepe finishes can be smooth, medium or very rough.
- Non-directional crepe finish: This finish is the same as the crepe finish, except there is not a direction applied to the crepe. This finish is needed if a roll can be used in any direction or when it is not feasible to run the roll in one direction. Non-directional crepe finishes can be smooth, medium or very rough.
- Polished Finish: This finish is required mostly in the printing and coating industries. Universal Urethane will grind to a specific RA finish and supply a printout from our RA testing device along with the finished roll.
- Cast Finish: This is the finish of a urethane roll as it comes straight out of the mold. We mainly use this finish for non-critical, high volume rolls such as conveyor rolls and wheels.
- Machined Finish: This is a low cost finish we use that resembles a record/album finish. It has a fine line left behind by the tool. We use this finish when a roll needs to be round, but applying the extra step of ground finish is not required.
Many other specialized materials and finishes have been developed by Universal Urethane. Please call to discuss your specific needs and requirements.
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