{"id":2292,"date":"2026-05-20T09:02:09","date_gmt":"2026-05-20T01:02:09","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2292"},"modified":"2026-06-30T17:16:04","modified_gmt":"2026-06-30T09:16:04","slug":"polyethylene-pe","status":"publish","type":"material","link":"https:\/\/www.jcinjectionmolding.com\/pt\/materials\/polyethylene-pe\/","title":{"rendered":"Polyethylene (PE)"},"content":{"rendered":"
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Comprehensive Polyethylene (PE) Grades We Mold<\/h2>\n

We process a wide range of PE resins from leading global petrochemical companies, supporting diverse structural and flexibility requirements:<\/p>\n\n\n\n\n\n\n\n\n
PE Material Sub-Type<\/th>\nTypical Brand & Grade<\/th>\nKey Characteristics & Advantages<\/th>\n<\/tr>\n<\/thead>\n
HDPE
\n(High-Density)<\/td>\n		\u2022 Dow Polyethylene DMDA-8007
\n\u2022 Sabic HDPE CC2056
\n\u2022 LyondellBasell Hostalen ACP 5831 D
\n\u2022 Chevron Phillips Marlex 9006<\/td>\n		High tensile strength, rigid molecular structure, excellent chemical resistance, and low temperature toughness. Perfect for heavy-duty containers, caps, and automotive fluid reservoirs.<\/td>\n<\/tr>\n
LDPE
\n(Low-Density)<\/td>\n		\u2022 ExxonMobil LDPE LD 605
\n\u2022 Dow LDPE 722
\n\u2022 LyondellBasell Lupolen 2420H
\n\u2022 Sabic LDPE HP0322<\/td>\n		High flexibility, superior impact toughness at low temperatures, and excellent moisture barrier properties. Widely used for flexible lids, squeeze caps, and consumer containers.<\/td>\n<\/tr>\n
LLDPE
\n(Linear Low-Density)<\/td>\n		\u2022 Dow DOWLEX 2045G
\n\u2022 ExxonMobil LLDPE LL 1001
\n\u2022 Sabic LLDPE 118N
\n\u2022 Chevron Phillips Marlex LLDPE<\/td>\n		Higher tensile strength, puncture resistance, and flexibility compared to standard LDPE. Extensively applied in snap-fit assemblies, heavy-duty lids, and impact-modified housings.<\/td>\n<\/tr>\n
UHMWPE \/ Specialty PE
\n(Ultra-High Molecular)<\/td>\n		\u2022 Celanese GUR 4120
\n\u2022 Celanese GUR 4150
\n\u2022 Mitsui Lubmer LY1040 (Specialty Injection Grade)<\/td>\n		Unrivaled self-lubricating properties, extreme wear resistance, and high impact strength. Molded using specialty high-pressure injection molding for gears and sliding guides.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Applicable Molding Processes for Polyethylene (PE)<\/h2>\n

Polyethylene’s low melt viscosity and excellent thermal stability support various molding methodologies:<\/p>\n\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. Ideal for mass-producing consumer container caps, durable household goods, and rigid structural crates.<\/td>\n<\/tr>\n
Thin-Wall Molding<\/td>\nHigh. Primarily utilized with high-MFI HDPE and LDPE resins to produce lightweight food containers and cosmetic lids.<\/td>\n<\/tr>\n
Insert Molding<\/td>\nGood. Allows integration of metallic fasteners or brass bushings directly into PE components to support threaded assemblies.<\/td>\n<\/tr>\n
Overmolding \/ Multi-Shot<\/td>\nModerate to High. Frequently overmolded with compatible grades of TPE or specialized elastomeric materials to create non-slip handles.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Polyethylene (PE) Manufacturing & Tooling Guide<\/h2>\n

Due to PE\u2019s semi-crystalline nature and highly dynamic molecular shrinkage, strict control of scientific molding boundaries is mandatory:<\/p>\n

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  • Pre-Drying:<\/strong> Normally not required due to PE’s low water absorption (<0.01%). If stored in high-humidity conditions, pre-dry at 70\u00b0C\u201380\u00b0C (158\u00b0F\u2013176\u00b0F) for 1\u20132 hours.<\/li>\n
  • Melt Temperature:<\/strong> Set between 180\u00b0C and 260\u00b0C (356\u00b0F to 500\u00b0F). Exceeding 280\u00b0C can result in chemical chains fracturing and material yellowing.<\/li>\n
  • Mold Temperature:<\/strong> Managed between 20\u00b0C and 60\u00b0C (68\u00b0F to 140\u00b0F). Higher mold temperatures improve mechanical strength and gloss but increase volumetric shrinkage.<\/li>\n
  • Shrinkage Control:<\/strong> Volumetric shrinkage is exceptionally high, typically 1.5% to 3.0% depending on part thickness and density. Jucheng\u2019s tooling engineers calculate customized drafts and gates during DFM to prevent sink marks.<\/li>\n
  • Venting Design:<\/strong> PE processing is prone to gas entrapment. Precise venting channels of 0.02mm to 0.03mm are machined on the mold parting lines to prevent diesel burns.<\/li>\n<\/ul>\n<\/section>\n

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    Key Application Industries for Molded PE Components<\/h2>\n
      \n
    • Medical & Laboratory (ISO 13485):<\/strong> Disposable pipettes, diagnostic cassettes, protective syringe caps, sample tubes, and reagent bottle closures.<\/li>\n
    • Automotive Engineering (IATF 16949):<\/strong> Windshield washer fluid reservoirs, expansion tanks, protective wire harness shields, and inner trim brackets.<\/li>\n
    • Packaging & Closures:<\/strong> Child-resistant pharmaceutical caps, living-hinge snap-top closures, chemical-resistant containers, and food storage containers.<\/li>\n
    • Consumer & Outdoor Gear:<\/strong> Heavy-duty logistics crates, structural household brackets, impact-resistant protective cases, and sports equipment.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Comprehensive Polyethylene (PE) Grades We Mold We process a wide range of PE resins from leading global petrochemical companies, supporting diverse structural and flexibility requirements: PE Material Sub-Type Typical Brand & Grade Key Characteristics & Advantages HDPE (High-Density) \u2022 Dow Polyethylene DMDA-8007 \u2022 Sabic HDPE CC2056 \u2022 LyondellBasell Hostalen ACP 5831 D \u2022 Chevron Phillips […]<\/p>\n","protected":false},"featured_media":2405,"template":"","meta":[],"material_type":[22],"application_feature":[],"machining_process":[],"class_list":["post-2292","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-commodity-plastics"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/material\/2292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/media\/2405"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/media?parent=2292"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/material_type?post=2292"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/application_feature?post=2292"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/machining_process?post=2292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}