A molded urethane manufacturers directory including urethane molding, urethane casting, polyurethane molding, polyurethane, urethane, urethane sheets, polyurethane wheels, urethane rollers, polyurethane sheet, urethane wheels, polyurethane mouldings, and polyurethane casting.  

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About Molded Urethane

Molded urethane, commonly referred to as polyurethane, is an elastic polymer, or elastomer, that has gone through a molding process. Polyurethane maintains a valuable molding ability. The raw materials of polyurethane exist in a liquid state, which allows for easy mixing and measuring in preparation for molding. These raw materials react with one another to form a pre-polymer. During the urethane molding process, a curative is introduced to the pre-polymer in order to complete the polymeric transition. Accelerated by heat and/or pressure, the mixture is poured into a mold cavity and cured to form the final polymer.

Common urethane molding services include open casting and compression molding. Open casting is used in many polyurethane manufacturing applications. During open urethane casting, the pre-polymer and curative are heated and mixed together, poured into an open cavity and cured without the application of pressure. Compression urethane molding remains common in the manufacturing of small polyurethane parts. The pre-polymer is heated, the curative is added and the mixture is poured into the mold cavity. The mold cavity then closes, the application of pressure spreads the molding mixture throughout the mold cavity and the mixture cures under the continued application of heat and pressure. The urethane molding services utilized depends upon the size and quantity of the polyurethane parts, as well as the industrial application for which the parts will be used.

Elastomers are rubbers capable of extensive temporary deformation. An elastomer maintains the ability to return quickly to its initial state after stretching up to twice its original length. Although all elastomers maintain strength and versatility in many industrial applications, polyurethane elastomers possess several advantages over other elastomers and materials. Urethane has higher abrasion, cut, tear, oil, ozone and radiation resistance, greater load bearing ability, broader hardness range and better colorability than rubber. Polyurethane also has thick section molding and low pressure tooling capabilities and a castable nature. As compared to metal, urethane has better noise reduction and resilience, greater abrasion, corrosion and impact resistance, more flexibility and is less costly to fabricate. Polyurethane is also lightweight, easily moldable, non-conductive and non-sparking. Urethane wins out over plastic in many applications, as it has higher impact, low temperature, cold flow, radiation and abrasion resistance, better elastic memory and noise reduction capabilities, greater resilience and provides lower cost tooling.

Industries that utilize urethane molding services include the construction/engineering, automotive, mining, food processing and sports/athletic equipment industry. Applications in the automotive industry include cellular suspension units, press tool blocks, grommets, bearings and shock absorber bushes. Polyurethane is useful to the mining, quarrying and civil engineering industries in the following applications: rope pulley linings, conveyer belt scraper blades, abrasion resistant strips, hydraulic seals, etc. The textile industry uses molded polyurethane parts for knitting machine falling bars, yarn feed rollers, loom pickers and machine couplings. Molded urethane parts, such as conveyer rollers, pressure pads and pneumatic seals and buffers, are also valuable in the mechanical handling of products. Molded polyurethane parts are utilized in the footwear and shoe industry, as well, for stiletto heel tips, soling materials, heel molding pads and drive rollers.

Image Provided by FallLine Corporation	Image Provided by Mearthane Products Corp.

Featured Articles

“Polyurethane O-rings Stand Up to Tough Conditions”
http://www.rlhudson.com/profile/in_the_news/md_polyurethaneorings.htm
 
“New Kid in Town: Lightweight Polyurethane Gaining Acceptance in Interiors”
http://waw.wardsauto.com/ar/auto_new_kid_town

Image Provided by Weaver Industries, Inc.	Image Provided by American Urethane, Inc.

Types of Molded Urethane

• Cast urethanes, also known as “RTV molding” or “polyurethanes,” refer to a production method in which polyurethane plastic material is produced in low volumes for marketing samples, test prototypes or other applications that require less than 100 pieces but where time and money does not allow for the injection molding process.
  
• Injection molded urethane is highly durable and easily painted.
  
• Molded urethane is a plastic product that has been formed with dyes.
  
• Polyurethane manufacturers make various products made out of polyurethane.
  
• Polyurethane molding uses the tool and dye process to make components out of polyurethane.
  
• Polyurethane sheets are hard but flexible sheets that outperform metals in many applications. Polyurethane sheets retain their flexibility even at low temperatures.
  
• Polyurethane wheels have a hardness that is similar to that of phenolic, polyolefin, hard rubber and other hard tread wheels, but are not noisy.
  
• Urethane manufacturers make various products out of urethane.