Polyurethane Molding/

Polyurethane Belts

Polyurethane belts, also referred to as urethane belting, are formed from an elastic polymer, or elastomer, that contains urethane carbamate links. Polyurethane offers many advantages for belting applications, due to its durability, abrasion resistance, toughness and flexibility. In addition, polyurethane is a FDA and USDA-approved food-grade material, making polyurethane belts ideal for food handling applications, as well as medical.

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Gallagher Corporation
Gurnee, IL
800-373-8793
For 47 years, the Gallagher Corporation has been serving virtually every industry. They are dedicated to helping customers improve. The talented staff is able to help establish and prioritize your performance needs, recommend the proper material, provide prompt quotations and produce the quality part you need. For your next order of polyurethane belts, call Gallagher.
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American Urethane, Inc.
Odenton, MD
800-394-7883
For FDA-approved materials for use in clean-room environments, contact American Urethane. Their polyurethane belts have many benefits including extensive wear, abrasion resistance, elasticity, solvent resistance, color acceptability, low tooling costs and can withstand extensive temperature changes, amongst others. For your next order, be sure to call for a quote.
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Unicast Inc.
Easton, PA
800-275-0818
At Unicast Inc. they believe the customer should be able to buy the product they want, such as polyurethane belts, directly form the manufacturer. So this is the service they provide. They make the products and deliver them straight to you. The company is able to offer an extensive line of products and if they don't have exactly what you are looking for, they can custom produce the part as well.
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FallLine Corporation
Reno, NV
800-325-5463
At FallLine Corporation, they believe that clear, effective dialog can save hours of time and minimize the possibility of errors. It is for this reason they invite customers to communicate directly with their engineering staff so that all difficulties can be solved quickly and efficiently. For all your product needs, including polyurethane belts, be sure to contact FallLine.
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Weaver Industries, Inc.
Denver, PA
717-336-7507
The talented and experienced sales staff at Weaver Industries is fully capable of providing technical support along with the ability to answer all graphite and machining questions. When it comes to polyurethane belts, they have the perfect solution to fit all your requirements. The customer service staff is prepared to provide timely quotations and help you find a cost effective product.
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Western Roller Corporation
Bend, OR
800-541-2317
At Western Roller Corporation it is their mission to never compromise on quality. Their sales, engineering and production staff is constantly striving to improve quality and production methods to provide their valued customers with the highest quality and most cost effective products. For your next order of polyurethane belts, make sure to call Western Roller.
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Industry Information

Polyurethane Belts

Polyurethane belts are widely used as conveyor belts, and are most commonly o-ring, or round, belts, meaning the belt is designed to run in a pulley with a near circular groove. Round polyurethane belts are utilized in industries such as: petrochemical and agricultural, due to high chemical and oil resistance; industrial manufacturing, for most material handling applications; and automotive, for power transmission and drive belt applications. Polyurethane belts may also be flat belts or vee belts, which are beneficial for powering rollers; however, round belts are the most efficient material handling form. Some additional benefits of polyurethane belts include cost-efficiency, elimination of a belt tensioner and quick fabrication. However, there are some downsides, since they do not work well for high-precision or heavy duty applications or in extremely high temperatures such as above 230ºF or in cold temperatures of around -10ºF or below.

Polyurethane can formed into belting through various processes, including molding and extrusion. Typically open casted, a curative is introduced to the polyurethane in order to complete the polymeric transition. Accelerated by heat, the polyurethane is poured into a mold cavity and cured to form the final shape. For extrusion, polyurethane is processed through a screw extruding machine that consists of a heated shearing screw conveyor or twin screw conveyor and a die through which the heated and pressurized polyurethane is squeezed. The polyurethane enters the screw conveyor channel by way of an attached hopper, after which it is softened through heating and shearing, and then pressurized through the rotation of a screw. The pressure pushes the polyurethane through the die, located at the end of the machine. The polyurethane then emerges in a profile resembling the die shape, which is either round or flat cross sectional. The extruded polyurethane or cast polyurethane is then cut to the desired length and the ends are thermally welded together. For longer service life, virgin urethane is often used; however, recycled urethane, or regrind, can be used to enhance machinability and weldability, but decreases service life. The average service life of a polyurethane belt made using high-quality materials can be up to 12 years, although a life span of 4-6 years is more common.