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POM Plastic Injection Molding

POM Plastic Injection Molding

POM injection molding, Polyacetal, also known as acetal or polyoxymethylene (POM), is a formaldehyde-based, semi-crystalline engineering thermoplastic containing the functional group of a carbon bonded to two -OR groups. Other names of POM are Polyformaldehyde, Polymethylene glycol, Polyoxymethylene glycol. It is 100% recyclable.


POM resins are widely used in the production of precision plastic molding parts for applications demanding good dimensional stability and sliding properties. Some of them include: Automotive, Electrical & electronic, Industrial, Drug Delivery ect. 


The polymer serves as an alternative to metals thanks to its low friction & wear characteristics and its excellent balance of mechanical and chemical properties.



Properties of POM Injection Molding

The tensile strength of POM reaches 70MPa, the water absorption is small, the size is stable, and the gloss is better than nylon. POM is a highly crystalline resin, which is the toughest among thermoplastic resins. With heat resistance, bending strength, fatigue resistance strength are high, wear resistance and electrical properties are excellent. POM properties: specific gravity 1.43 performance values ??m.p. 175 ° C tensile strength (yield) 70MPa Elongation (Yield) 15% (at break) 15% impact strength (no notched) 108KJ / m2 (with a notch) 7.6KJ / m2



POM Injection Molding Requirement


  • Drying Temperature 60-80 °C

  • Drying Time 2.0-6.0 hr

  • Suggested Moisture Content <=0.20 %

  • Rear Barrel Temperature 170-190 °C

  • Middle Barrel Temperature 180-200 °C

  • Front Barrel Temperature 190-210 °C

  • Nozzle Temperature 200-220 °C

  • Mold Temperature 40-80 °C



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