Molded polyurethane is used for a variety of purposes. Molded polyurethane has a surprising mixture of strength and flexibility. It is water-resistant, and stands up well to contaminants. This is why the product is often used in the medical industry and other bacterial-conscious industries.
Another perfect application for this form of urethane is cushioning for a variety of purposes. The flexibility and cushioning power of the urethane makes it ideal for use as a cushion, and the water-resistant properties make it ideal for use in outdoor environments as well as for sports and swimming applications. Cushions can also be used in the medical industry as therapy aids, to help reduce paint, add comfort, and increase the endurance of the patients during exercise and therapy. Injection molded cushion foam is the most common form of cushioning used for high intensity purposes and exercise props today. A molded urethane cushion can support hundreds of pounds of weight and will spring back to its original dimensions every time. The urethane allows the unique properties of providing form-supporting and fitting depressions that provide comfortable support no matter the use of the cushion.
No matter what industry you are in, the beneficial properties of urethane cushions cannot be ignored. For such a versatile cushion material, urethane is surprisingly cost-effective. Urethane is also resistant to UV exposure and chemical exposure, making it as durable as it is flexible.
Although all elastomers maintain strength and versatility in many industrial applications, polyurethane elastomers possess several advantages over other elastomers and materials. Many of these advantages have been demonstrated in laboratory tests. Polyurethane has higher abrasion, cut, tear, oil, oxygen, ozone and radiation resistance, greater load bearing ability, broader hardness range and better colorability than rubber; urethane even showed better wear resistance than some kinds of steel. Polyurethane responds so well to compression loading that it can be used to make tires for trucks. Its resistance to petrochemicals is also much better than most rubber materials, and it is also highly oxidation-resistant. Polyurethane has thick section molding and low pressure tooling capabilities and a castable nature. As compared to metal, polyurethane 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. Molded urethane serves better than regular 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. In addition, polyurethane molding, as a process, offers the benefits of high accuracy, diverse part size capabilities, a fast turn-around and the ability to form parts with undercuts as well as parts without drafts. Also, the cost of polyurethane moulding is on par with the cost of rubber and typical polymer molding, giving urethane an economic advantage as well.
Polyurethane Molding - FallLine Corporation
Polyurethane Molding - FallLine Corporation
- Substance added to a polymer to increase the effectiveness, but not the strength, of the polymer. Examples of additives include flame-retardants, anti-static urethane casting compounds, molded urethane pigments and urethane molding lubricants.
- A discoloration of the molded urethane surface of a polyurethane product-not to be confused with dust from external sources-caused by the migration of a liquid or solid to the surface.
- Foam producing substance (e.g. carbon dioxide).
- The point of tension at which polyurethane will rupture in urethane molding process.
- A polymer made up of two monomers in which each repeating unit in the chain consists of molded urethane units of both monomers.
- The chemical linkage of polymeric chains that results in a three-dimensional network of polymers. Crosslinked polymers possess greater strength and durability than linear polymers do.
- The amount of time necessary to complete a urethane molding cycle from urethane mold preparation to demolding.
- A device placed within a urethane mold that prevents the flow of material into cavities of the mold in order to reduce, alter or eliminate a part of the cast for which the urethane mold was initially designed.
- The amount of time that passes between the dispensation of liquid components into the urethane mold and the removal of the end molded urethane product.
- Chemicals in liquid or crystalline form used in the production of polyurethane adhesives, coatings and urethane casting foam.
material capable of returning to its initial length after being stretched
at room temperature up to twice its original length.
- An ion, composed of one oxygen atom and one hydrogen atom, used in bases, acids and alcohols.
- Energy loss in the form of heat that results from the deformation of elastomeric material caused by the application of urethane molding stress.
- The forming of millimeter- or micron-sized parts through the urethane molding process. Micro molded parts, for which tolerances must be extremely tight, are increasingly in demand by biomedical, pharmaceutical, fiber-optic, electronics, telecommunications, office-automation, computer and automotive industries.
- The most basic polymeric unit, usually a liquid or a gas, consisting of molecules from the same organic substance.
- Two or more monomers bonded together in a chain through a chemical reaction.
- A chemical compound composed of two or more hydroxyl groups that, in conjunction with diisocyanate, are used in the urethane molding production of polyurethane foam.
- The comparison of the amount of energy needed to create an elastic deformation and the amount of energy needed to recover from such a deformation.
- Category of plastics that have the potential to soften and reform when heated, hardening again when cooled. During the urethane molding process, the physical makeup of the thermoplastic does not change.
- Category of plastics that cannot be reformed upon reheating. Thermosets remain permanently hard.