{"id":1620,"date":"2026-08-31T14:22:37","date_gmt":"2026-08-31T06:22:37","guid":{"rendered":"https:\/\/bastone-petrochem.com\/?p=1620"},"modified":"2026-08-28T08:45:38","modified_gmt":"2026-08-28T00:45:38","slug":"pe100-resin-grade-pipe-extruder","status":"publish","type":"post","link":"https:\/\/bastone-petrochem.com\/es\/pe100-resin-grade-pipe-extruder\/","title":{"rendered":"\u00bfQu\u00e9 Grado de Resina PE100 Necesita un Extrusor de Tuber\u00edas?"},"content":{"rendered":"\n

A single PE100 pipe compound prints three melt flow rates on one datasheet: 0.08, 0.3 and 8.5 g\/10 min. Only the middle number, measured at 190 \u00b0C under a 5 kg load, is the one the application standard asks for.<\/p>\n\n\n\n

The spread across loads is the observable signature of a bimodal molecular weight distribution, the architecture behind every PE100 pipe resin. Two datasheets whose MFR figures were measured at different loads are not reporting the same property.<\/p>\n\n\n\n

MFI alone does not tell you whether a PE100 grade will draw clean. You also need molecular-weight distribution data, the design stress your pipe’s SDR implies, and a certificate that actually binds the supplier to the numbers the line requires.<\/p>\n\n\n\n

What Makes a Resin PE100 Rather Than Ordinary HDPE<\/h2>\n\n\n\n

PE100 designates a hydrostatic strength class<\/a>, not a density or a temperature rating. The number means the resin carries a minimum required strength of 10.0 MPa.<\/p>\n\n\n\n

What earns that class is not a single property but an architecture.<\/p>\n\n\n\n

Bimodal Molecular Weight Distribution<\/h3>\n\n\n\n

PE100 pipe resin is produced in a cascade or single-reactor process that builds two molecular weight populations into one pellet. The low-molecular-weight, high-density fraction carries stiffness and processability. The high-molecular-weight fraction bears the comonomer, supplying the tie chains that connect crystalline regions and resist slow crack growth.<\/p>\n\n\n\n

\"Cross-section<\/figure>\n\n\n\n

On a bimodal PE100 black compound datasheet, the three MFR rows read 0.08 g\/10 min at 2.16 kg, 0.3 at 5 kg and 8.5 at 21.6 kg, all at 190 \u00b0C per ISO 1133. A unimodal resin does not spread that far across loads.<\/p>\n\n\n\n

The architecture also governs what happens on the line. Bimodal resins carry higher low-shear viscosity, which resists sag in thick-wall pipe extrusion above roughly 75 mm wall thickness.<\/p>\n\n\n\n

A PPCA 2018 conference paper ran a bimodal PE 4710\/PE 100 resin to 610 mm DR 7.3 at 83.5 mm minimum wall, with carbon black dispersion measured uniform through the wall per ISO 18553. The paper’s own caveat: resin melt strength alone was not sufficient, and cooling control was co-equal.<\/p>\n\n\n\n

MFR and Density Bands<\/h3>\n\n\n\n

Pipe extrusion lines constrain PE100 compounds to a 0.2 to 1.4 g\/10 min MFR band at 190 \u00b0C\/5 kg per ISO 1133. Most producers nominate a value near 0.3 g\/10 min for pressure pipe.<\/p>\n\n\n\n

A PE100 figure quoted at 2.16 kg lands near 0.08 g\/10 min, well outside the standard’s band. Two datasheets at different loads are not comparable, and neither number tells you whether the grade will process on your line.<\/p>\n\n\n\n