{"id":2814,"date":"2026-07-31T17:27:17","date_gmt":"2026-07-31T09:27:17","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2814"},"modified":"2026-07-31T17:30:49","modified_gmt":"2026-07-31T09:30:49","slug":"ptfe-teflon","status":"publish","type":"material","link":"https:\/\/www.jcinjectionmolding.com\/it\/materials\/ptfe-teflon\/","title":{"rendered":"PTFE (Teflon)"},"content":{"rendered":"
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Common Fluoropolymer & PTFE Grades We Process<\/h2>\n

We process high-purity virgin PTFE, filled compounds, and melt-processable fluoropolymers (PFA\/FEP) from world-leading chemical compounders:<\/p>\n\n\n\n\n\n\n\n
Fluoropolymer Class<\/th>\nMarchio e Grado Tipico<\/th>\nCaratteristiche e Vantaggi Principali<\/th>\n<\/tr>\n<\/thead>\n
Virgin & Modified PTFE<\/td>\n\u2022 Chemours Teflon PTFE Granular
\n\u2022 Daikin Polyflon PTFE<\/td>\n		Ultra-low coefficient of friction (0.04), complete chemical insolubility, and extreme thermal limits (-200\u00b0C to +260\u00b0C). Ideal for high-purity chemical valve seats, gaskets, and seals.<\/td>\n<\/tr>\n
Injection-Moldable PFA \/ FEP<\/td>\n\u2022 Chemours Teflon PFA 340 \/ FEP 100
\n\u2022 Solvay Hyflon PFA \/ FEP<\/td>\n		Fully melt-processable fluoropolymers that retain PTFE’s chemical and thermal performance while allowing complex injection molding of fluidic manifolds and semiconductor fittings.<\/td>\n<\/tr>\n
Filled PTFE Compounds<\/td>\n\u2022 Glass-Filled PTFE (15%-25% GF)
\n\u2022 Carbon \/ Bronze-Filled PTFE<\/td>\n		Reinforced with glass, carbon, or bronze powders to dramatically decrease cold-flow deformation (creep) and increase wear resistance in heavy-load hydraulic bearings and piston rings.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Applicable Processing Methods for Fluoropolymers<\/h2>\n

Fluoropolymers require specialized processing techniques due to their extreme melt viscosity and thermal boundaries:<\/p>\n\n\n\n\n\n\n\n
Processing Technology<\/th>\nProcess Suitability & Operational Details<\/th>\n<\/tr>\n<\/thead>\n
High-Temp PFA\/FEP Injection Molding<\/td>\nExcellent. Designed for complex chemical manifolds, semiconductor wafer-handling fittings, and high-purity medical valves using melt-processable fluoropolymers.<\/td>\n<\/tr>\n
Compression Molding & Sintering<\/td>\nPrimary for Pure PTFE. Cold compaction of fine powder followed by high-temperature sintering above 360\u00b0C to form dense structural billets and rings.<\/td>\n<\/tr>\n
5-Axis CNC Precision Machining<\/td>\nExcellent. Precision machining of molded or extruded PTFE billets down to micro-tolerances for dynamic lip seals, thread adapters, and valve cores.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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PTFE & Fluoropolymer Processing Technical Guide<\/h2>\n

Processing fluoropolymers requires extreme temperature boundaries and corrosion-proof machine metallurgy:<\/p>\n

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  • Extreme Processing Temperatures:<\/strong> Melt-processable PFA and FEP resins require high barrel temperatures between 350\u00b0C and 400\u00b0C (662\u00b0F to 752\u00b0F). Mold temperatures are kept at 180\u00b0C\u2013230\u00b0C (356\u00b0F to 446\u00b0F) using pressurized oil heating controllers.<\/li>\n
  • Nickel-Alloy & Hastelloy Corrosion Protection:<\/strong> At temperatures above 360\u00b0C, molten fluoropolymers release trace corrosive hydrogen fluoride (HF) vapors. Jucheng uses specialized Hastelloy or heavy nickel-plated tool cavities and bimetallic machine barrels to prevent tool degradation.<\/li>\n
  • Ultra-Low Friction Demolding:<\/strong> The self-lubricating matrix of PTFE\/PFA ensures smooth part release. However, due to low tensile modulus at elevated temperatures, generous draft angles (minimum 1.5\u00b0) and wide ejector plates are designed to prevent part deformation during ejection.<\/li>\n
  • Zero Moisture Absorption:<\/strong> PTFE and PFA have water absorption rates below 0.01% (hydrophobic). While drying is rarely necessary, raw materials are kept in cleanroom environments to prevent dust contamination prior to high-temp processing.<\/li>\n<\/ul>\n<\/section>\n

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    Key Application Industries for PTFE & Fluoropolymer Parts<\/h2>\n
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    • Chemical Processing & Fluid Handling:<\/strong> Corrosive acid valve seats, pump impellers, chemical pipe gaskets, diaphragm pump seals, and lining sleeves.<\/li>\n
    • Semiconductor & High-Purity Infrastructure:<\/strong> Wafer carriers, ultra-pure chemical etching fittings, high-frequency coaxial cable insulators, and wet-bench components.<\/li>\n
    • Medical & Biotechnology (ISO 13485 Compliant):<\/strong> Biocompatible catheter valves, blood-contact fluidic manifolds, analytical reagent seals, and surgical implants.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Common Fluoropolymer & PTFE Grades We Process We process high-purity virgin PTFE, filled compounds, and melt-processable fluoropolymers (PFA\/FEP) from world-leading chemical compounders: Fluoropolymer Class Typical Brand & Grade Key Characteristics & Advantages Virgin & Modified PTFE \u2022 Chemours Teflon PTFE Granular \u2022 Daikin Polyflon PTFE Ultra-low coefficient of friction (0.04), complete chemical insolubility, and extreme […]<\/p>\n","protected":false},"featured_media":2815,"template":"","meta":[],"material_type":[20],"application_feature":[],"machining_process":[],"class_list":["post-2814","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-high-performance-polymers"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/material\/2814","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/media\/2815"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/media?parent=2814"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/material_type?post=2814"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/application_feature?post=2814"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/it\/wp-json\/wp\/v2\/machining_process?post=2814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}