{"id":2319,"date":"2026-05-21T14:28:21","date_gmt":"2026-05-21T06:28:21","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2319"},"modified":"2026-06-30T17:14:23","modified_gmt":"2026-06-30T09:14:23","slug":"polyoxymethylene-pom-acetal","status":"publish","type":"material","link":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/materials\/polyoxymethylene-pom-acetal\/","title":{"rendered":"Polyoxymethylene (POM\/Acetal)"},"content":{"rendered":"
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Comprehensive Polyoxymethylene (POM\/Acetal) Grades We Mold<\/h2>\n

We process high-stiffness, low-wear POM formulations from global petrochemical leaders, supporting highly challenging mechanical assemblies:<\/p>\n\n\n\n\n\n\n\n
POM Material Class<\/th>\nTypical Brand & Grade<\/th>\nKey Characteristics & Advantages<\/th>\n<\/tr>\n<\/thead>\n
POM Homopolymer<\/td>\n\u2022 DuPont Delrin 100P \/ 500P \/ 900P
\n\u2022 DuPont Delrin 150<\/td>\n		Higher crystalline structure offering superior room-temperature tensile strength, stiffness, fatigue resistance, and creep resistance compared to copolymers. Applied in high-load mechanical gears and levers.<\/td>\n<\/tr>\n
POM Copolymer<\/td>\n\u2022 Celanese Celcon M90 \/ M270
\n\u2022 Polyplastics Duracon M90-44
\n\u2022 Mitsubishi Iupital F20-03<\/td>\n		Outstanding thermal stability, chemical resistance, hydrolytic stability, and excellent processability (less prone to mold deposit). Ideal for hot water valves, fuel caps, and electronic components.<\/td>\n<\/tr>\n
Low Wear & Friction<\/td>\n\u2022 DuPont Delrin 500AL \/ 100AL
\n\u2022 Polyplastics Duracon AW-01
\n\u2022 Celanese Hostaform C 9021 TF<\/td>\n		Modified with PTFE (Teflon), silicone, or chemical lubricants to lower the coefficient of friction and dramatically increase wear life. Engineered for silent sliding tracks and heavy-duty wear rings.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Applicable Molding Processes for POM (Acetal)<\/h2>\n

POM’s precise crystallization rate and fluid flow behaviors support complex molding architectures:<\/p>\n\n\n\n\n\n\n\n
Molding Process<\/th>\nProcess Suitability & Application<\/th>\n<\/tr>\n<\/thead>\n
Standard Injection Molding<\/td>\nExcellent. Highly optimized for automotive gear sets, pulleys, zippers, sliding plates, and high-stiffness fasteners.<\/td>\n<\/tr>\n
Micro Injection Molding<\/td>\nExcellent. POM’s exceptional flow and fast solidification rate make it the leading choice for micro-gears, tiny clock parts, and micro-actuators.<\/td>\n<\/tr>\n
Insert Molding<\/td>\nGood. Allows precision encapsulation of metal shafts, rotating pins, and bushings inside wear-resistant POM housings.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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POM (Polyoxymethylene) Tooling & Manufacturing Guide<\/h2>\n

While POM processes smoothly, its highly crystalline nature and gas emission profiles require highly experienced mold design and process control:<\/p>\n

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  • Pre-Drying:<\/strong> POM has exceptionally low moisture absorption. However, to guarantee high surface cosmetics on visual components, we pre-dry POM resin at 80\u00b0C\u201390\u00b0C (176\u00b0F to 194\u00b0F) for 2 hours.<\/li>\n
  • \u7194\u81a0\u6eab\u5ea6\uff1a<\/strong> Processed between 190\u00b0C and 230\u00b0C (374\u00b0F to 446\u00b0F) for Homopolymers, and 180\u00b0C to 210\u00b0C (356\u00b0F to 410\u00b0F) for Copolymers. Melt temperatures must never exceed 240\u00b0C, or the resin will decompose, releasing corrosive formaldehyde gas.<\/li>\n
  • \u6a21\u5177\u6eab\u5ea6\uff1a<\/strong> Managed at elevated levels between 80\u00b0C and 120\u00b0C (176\u00b0F to 248\u00b0F). High mold temperatures ensure complete crystalline formulation, which is critical for dimensional stability and mechanical strength.<\/li>\n
  • Meticulous Venting Design:<\/strong> Formaldehyde outgassing occurs naturally during POM processing, which can corrode mold steel. Jucheng\u2019s in-house tooling division machines robust venting channels (0.02mm depth) and uses corrosion-resistant mold steel (e.g., S136) to ensure continuous, flawless production.<\/li>\n
  • Shrinkage Control:<\/strong> POM exhibits high volumetric shrinkage (typically 1.8% to 2.5%). Our engineers calculate shrinkage isotropic trends and implement uniform wall thickness designs to eliminate sink marks and warpage.<\/li>\n<\/ul>\n<\/section>\n

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    Key Application Industries for Molded POM Components<\/h2>\n
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    • Automotive Mechanisms (IATF 16949 Certified):<\/strong> Window regulator brackets, door latch mechanisms, seat belt tensioner gears, windshield wiper pivots, and fuel sender units.<\/li>\n
    • Consumer & Mechanical Goods:<\/strong> Moving gears for printers, conveyor roller wheels, sliding zippers, snap-fit buttons, and water mixer valves.<\/li>\n
    • Medical Drug Delivery (ISO 13485 Compliant):<\/strong> Dry-powder inhaler gears, insulin pen internal slide racks, surgical tool sliding blocks, and dosing mechanism housings.<\/li>\n
    • Fluid Handling & Valves:<\/strong> Pump impellers, chemical spray nozzles, water meter components, household faucet valves, and pipe couplings.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Comprehensive Polyoxymethylene (POM\/Acetal) Grades We Mold We process high-stiffness, low-wear POM formulations from global petrochemical leaders, supporting highly challenging mechanical assemblies: POM Material Class Typical Brand & Grade Key Characteristics & Advantages POM Homopolymer \u2022 DuPont Delrin 100P \/ 500P \/ 900P \u2022 DuPont Delrin 150 Higher crystalline structure offering superior room-temperature tensile strength, stiffness, […]<\/p>\n","protected":false},"featured_media":2400,"template":"","meta":[],"material_type":[21],"application_feature":[],"machining_process":[],"class_list":["post-2319","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-engineering-plastics"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material\/2319","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/media\/2400"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/media?parent=2319"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material_type?post=2319"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/application_feature?post=2319"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/machining_process?post=2319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}