{"id":2548,"date":"2026-06-15T17:21:47","date_gmt":"2026-06-15T09:21:47","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2548"},"modified":"2026-06-30T11:04:57","modified_gmt":"2026-06-30T03:04:57","slug":"tpu-covestro-desmopan-385s","status":"publish","type":"material_model","link":"https:\/\/www.jcinjectionmolding.com\/ko\/materials\/thermoplastic-polyurethane-tpu\/tpu-covestro-desmopan-385s\/","title":{"rendered":"TPU-Covestro Desmopan 385S"},"content":{"rendered":"
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Desmopan 385S Structural Performance & Mechanical Resistance Profile<\/h2>\n

Desmopan\u00ae 385S belongs to the elite 300 Series of thermoplastic polyurethanes engineered by Covestro, certified to deliver maximum tensile strength, hydrolysis stabilization, and superior rebound resilience under ISO standards:<\/p>\n\n\n\n\n\n\n\n
\ubb3c\ub9ac\uc801 \ubc0f \uac15\ub3c4 \ud30c\ub77c\ubbf8\ud130<\/th>\nDesmopan 385S Spec Values<\/th>\n\uc131\ud615 \ubc0f \ucd5c\uc885 \uc0ac\uc6a9 \uc774\uc810<\/th>\n<\/tr>\n<\/thead>\n
\uc778\uc7a5 \uadf9\ud55c \uac15\ub3c4<\/td>\nUltimate Tensile Strength 50.5 MPa<\/td>\nExhibits extremely high mechanical tensile limit compared to standard TPU (typically 30-35 MPa), preventing structural deformation under extreme tension.<\/td>\n<\/tr>\n
Abrasion & Tear Resistance<\/td>\nDIN Loss 30 mm\u00b3 \/ Tear 70 kN\/m<\/td>\nDelivers outstanding mechanical wear protection and tear resistance, preventing crack propagation in dynamic structural parts and screenpacks.<\/td>\n<\/tr>\n
Dynamic Recovery<\/td>\nRebound Resilience 42%<\/td>\nHigh dynamic elastomeric spring-back properties prevent deformation, securing long-term sealing repeatability in dynamic industrial gaskets.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Technical & Fluidic Process Configurations for Hydrolysis-Stabilized Desmopan 385S<\/h2>\n

With its high-strength block copolymer matrix and hydrolysis stabilization, Desmopan 385S processes reliably inside high-heat systems:<\/p>\n\n\n\n\n\n\n\n
\uc131\ud615 \uae30\uc220 \ub4f1\uae09<\/th>\n\uacf5\uc815 \ud638\ud658\uc131 \ubc0f \uc6b4\uc601 \uc138\ubd80 \uc0ac\ud56d<\/th>\n<\/tr>\n<\/thead>\n
Hydrolysis-Stabilized Technical Parts<\/td>\nExcellent. Fully optimized for high-temperature water mixer valves, fuel caps, water meter connectors, and municipal hot-water plumbing pipes.<\/td>\n<\/tr>\n
High-Strength Screenpacks & Hoses<\/td>\nExcellent. Low chemical swelling under high humidity. Ideal for heavy-duty industrial hoses, screenpacks, and fluidic gaskets.<\/td>\n<\/tr>\n
Dynamic Low-Wear Industrial Seals<\/td>\nExcellent. Low compression set (30% at 23\u00b0C) and outstanding DIN wear resistance are perfect for hydraulic gaskets and dynamic seals.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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TPU-Covestro Desmopan 385S Tooling & High-Strength Molding Blueprint<\/h2>\n

Molding an amorphous high-strength polymer like Desmopan 385S requires strict thermal boundaries and low-stress mold setups to prevent flashing:<\/p>\n

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\ubbf8\ud06c\ub860 \uc218\uc900 \ud50c\ub798\uc2dc \uc81c\uc5b4(\ud234\ub9c1 \uc815\ubc00\ub3c4)<\/p>\n

Because Desmopan 385S exhibits exceptional fluidity under high shear, the molten resin can seep easily into minor mold gaps, causing parting line flash. Jucheng\u2019s tooling division uses 5-axis CNC machines to achieve micro-tolerances, keeping mold parting clearances strictly within 0.005mm on premium S136 stainless steel mold cavity blocks hardened to 48-52 HRC.<\/p>\n<\/div>\n

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Rigorous Pre-Drying Protocol<\/p>\n

Wet polyester-based TPU experiences severe hydrolytic chain cleavage at high melt temperatures, destroying its high impact strength and causing surface splay. We pre-dry the raw resin in desiccant hopper dryers at 70\u00b0C\u2013110\u00b0C (158\u00b0F to 230\u00b0F) for 1\u20132 hours, keeping moisture strictly below 0.05% before molding.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Application Fields for TPU-Covestro Desmopan 385S<\/h2>\n
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  • \uc0b0\uc5c5 \uc778\ud504\ub77c \ubc0f \uae30\uacc4:<\/strong> High-pressure industrial hydraulic gaskets, screenpacks, dynamic oil seals, dynamic expansion plugs, and protective sleeves.<\/li>\n
  • \uc790\ub3d9\ucc28 \ud30c\uc6cc\ud2b8\ub808\uc778 \ubc0f \uc100\uc2dc(IATF 16949):<\/strong> \uace0\uc628 \ub354\uc2a4\ud2b8 \ubca8\ub85c\uc6b0\uc988, \uc2a4\ud2f0\uc5b4\ub9c1 \ub799 \ubcf4\ud638 \uc2ac\ub9ac\ube0c, \uc9c4\ub3d9 \uac10\uc1e0 \uadf8\ub85c\ubc0b \ubc0f \uc100\uc2dc \uc530.<\/li>\n
  • Potable Water & Food Contact Systems:<\/strong> Faucet mixing valve seals, water meter connection rings, domestic water piping gaskets, chemical-resistant hoses, and couplers.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Desmopan 385S Structural Performance & Mechanical Resistance Profile Desmopan\u00ae 385S belongs to the elite 300 Series of thermoplastic polyurethanes engineered by Covestro, certified to deliver maximum tensile strength, hydrolysis stabilization, and superior rebound resilience under ISO standards: Physical & Strength Parameter Desmopan 385S Spec Values Molding & End-Use Advantage Tensile Ultimate Strength Ultimate Tensile Strength […]<\/p>\n","protected":false},"featured_media":2513,"template":"","meta":[],"class_list":["post-2548","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/material_model\/2548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media\/2513"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/ko\/wp-json\/wp\/v2\/media?parent=2548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}