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

Creep & Stress Relaxation

Posted on November 17, 2016 by Nick Cusatis

compressionfigure5Creep
When subjected to load, all elastomers exhibit an increasing deformation with time, know as creep. This occurs at any stress level and takes place in compression, tension and shear loadings and varies for each type of loading. In service, creep can be minimized by using low working stresses and avoiding high temperatures. No rapid method has been developed for its measurement because there is no know way of accelerating time effects without introducing inaccuracies in predicting rate of creep. Continue reading


Factors Affecting Tolerance

Posted on June 14, 2016 by Nick Cusatis

13-046_635There are many factors involved in the manufacturing of molded rubber products which affect tolerances. In general, the degree of reproducibility of dimensions depends upon the type of tooling and rubber used, and the state of the art. The purpose of this blog post is to list a few major factors affecting tolerances. Continue reading


PU Design Suggestions

Posted on April 29, 2016 by Nick Cusatis

urethanedesign1c2We take pride in designing the best possible polyurethanes the industry has to offer, and that is due to the strict guidelines and standards we set for our self.

Sharp Edges
Sharp edges or corners, externally or within the polyurethane part, should be avoided, particularly where the polyurethane is stressed.
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Flash. A Fancy Word For Edge Waste.

Posted on October 30, 2015 by Nick Cusatis

mdi_flashblogRubber injection molds are designed for an efficient, cost effective molding process, including lowest possible cycle time, maximized cavity count, and minimal material waste. A small amount of material waste can be in the form of edge waste, or flash as we call it in the industry.  This is the unwanted, fine, feathery rubber extension caused by raw material leaking into the mold parting line during the molding and curing process.  Flashless molding is the most ideal choice to eliminate flash altogether.  When flashless molding cannot be achieved, there are a variety of secondary operations available to address the flash.  Continue reading


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


Awards Result From Strategy

Posted on June 17, 2015 by Nick Cusatis

img_2958At Molded Dimensions, Inc., every decision made, every capital purchase, and every long-term strategy implemented is done with one goal in mind: to make MDI “a place where great people choose to work.”  At the foundation of our company are great people who make quality product, delivered on time.  This, in turn, draws great customers to our business.  Great customers provide for stable, profitable business growth benefitting our employee owners. 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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GlocalSource: Global Manufacturing, Local Service

Posted on March 16, 2015 by Nick Cusatis

GlocalSource is our unique service of providing rubber product from manufacturers around the globe, supported by Molded Dimensions, Inc.’s local, technical service and support. Companies benefit from our engineering knowledge, expertise, and program management, including design, logistics and communication. 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.