Polyoxymethylene (POM)
Polyoxymethylene (POM, also called polyacetal, polyformaldehyde) is a highly molecular thermoplastic material. It is often used as an engineering grade plastic, especially for precision parts, due to its high degree of stiffness, low friction coefficient, as well as dimensional and thermal stability.
POM is extremely solid, hard and stiff in a wide temperature range. It maintains its high ductility up to -40 °C (-40 °F) and has excellent abrasion and heat resistance, a low friction coefficient, good electrical, dielectrical and lubricant properties, and permits only minimal water absorption. In many cases, it can replace metal.
POM is processed via injection molding, extrusion, extrusion blow molding or machining.
. Gear wheels, sliding elements, guide elements, housing components, spring elements, chains, screws, nuts, fan wheels, pump parts, valve bodies
. Electrical engineering: insulators, coil bodies, plug connectors
. Vehicle manufacturing: steering column (e. g. levers for lights, indicators), window regulators, door lock systems, sockets
. Furniture making: locks, handles, hinges or curtain rails
. Clothing: zip fasteners
POM belongs to the group of plastics with low surface energy and is very difficult to bond without special surface treatment. Atmospheric plasma treatment improves the adhesion of glues on the surface.
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