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The comparative evaluation between Bormed HE7541 PH and Purell ACP6541A as medical grade resins is important because both materials are widely used in Pharmaceutical packaging applications where mechanical performance, processability and regulatory compliance are critical. Bormed™ HE7541-PH is a bimodal high density polyethylene intended for evaluation for use in Healthcare applications and is typically used in articles produced via injection moulding. Typical applications are (caps, closures, shoulders for tubes, containers for tablets, powder or granules). 1 Supplier Technical Data sheet. Exceptional organoleptic properties and outstanding balance of stiffness, toughness and environmental stresscracking resistance make Purell ACP6541A appropriate for the production of closures for still mineral and sparkling water, CSD (soft carbonated drinks) and many other types of food and non-food caps and closures (incl. hinge caps) as well as tube shoulders and compression moulding applications. Purell ACP6541A is additionally used in injection moulding applications. 2 Supplier Technical Data sheet
The objective of this abstract is to evaluate key mechanical and processing properties of two medical-grade HDPE resins BORMED™ HE7541PH and PURELL ACP6541A. The significantly higher MFR (Melt Flow Rate) of Bormed™ HE7541PH indicates lower melt viscosity and easier processability. PURELL ACP6541A with lower MFR, suggests higher molecular weight providing improved mechanical robustness. Similar tensile modulus values indicate comparable stiffness. Differences in hardness and tensile strength reflect variations in material rigidity and flexibility. Both HDPE resins demonstrate suitability for pharmaceutical packaging applications, but significant differences in melt flow rate and mechanical properties indicate that material substitution should be carefully validated based on processing conditions, performance requirements and regulatory compliance. 3 ISO 1133-1, ISO-527, ISO 868
Keywords: HDPE, Injection moulding applications, Melt Flow Rate, Tensile properties of plastic
References: 1,2 Supplier Technical Data sheet 3 ISO 1133-1, ISO-527, ISO 868.