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MOLDED DIMENSIONS, LLC
Custom Molder of Rubber and Cast Polyurethane Components.

MDI Chemist Explains Updates in Polyurethane Industry

Posted on July 31, 2015 by Nick Cusatis

Written By: Tony Lukas, Chemist Molded Dimensions Inc

screen-shot-2015-07-31-at-9-33-35-amPolyurethane suppliers and processors are continually looking to develop new materials and applications to take advantage of the unique properties of urethane.  One advantage that urethane has over rubber is much higher abrasion resistance.  This has historically been particularly true as the hardness reaches Shore 80A and above.  Although materials of softer hardness have long been available, the physical properties and abrasion resistance has not been a good as rubber in the 50A-70A range.  New developments are allowing for both polyether and polyester based materials that are great improvements over currently available urethanes and even better than natural rubber and SBR.  Typical applications for these types of materials would be in systems with heavy flow of particulate containing liquids or slurries. Continue reading


Taking A Closer Look at Abrasion Resistance

Posted on May 27, 2015 by Nick Cusatis

There are two types of abrasion – sliding and impingement. Sliding is the passing of an adjacent surface across the rubber surface. Impingement is wearing of the rubber exemplified by sand particles hitting the surface. Most wear in actual service occurs as a combination of both sliding and impingement.

When sliding, localized friction forces can impose high energy levels on the rubber. Abrasion and wear takes place when the rubber cannot withstand these forces.
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Why does Cast Polyurethane (PU) Make Such a Great Roller?

Posted on April 14, 2015 by Nick Cusatis

Cast polyurethane, formulated to have a balance of characteristics associated with premium materials, is a great solution in demanding roller applications.  In addition to its superior material characteristics, urethane can be molded and finished easily.

Material Properties
screen-shot-2015-04-14-at-12-24-51-pmSuperior abrasion resistance
In applications, such as manufacturing diapers, forming food product bags, or cash counting systems, urethane offers the abrasion resistance necessary to reduce wear, thereby reducing the frequency of worn roller replacement. Continue reading

A PEEK AT OUR PARTS

Pentathane Applications - Wipers Wiper used to material handling in food processing equipment. This material is both FDA approvable and abrasion resistant for durability.
Pentathane Applications - Wheels Pentathane® chemically bonded directly onto precision sealed bearing molded to tight concentricity specifications.
Elastomer Applications - Hose Hose configured for limited space in marine engine application.
Elastomer Applications - Tube Oil resistant molded tube used on combustion engine.