Melt flow testing of meltblown PP for nonwoven fabrics | ASTM D5035 / ISO 16900

In addition to respirator masks, other non-woven, medical protective clothing is manufactured as well. So-called melltblown polypropylene (PP), which functions as a filter, provides the products high filtration efficiency against the smallest particles. Meltblown PP is a non-woven fabric made of extremely fine, melt-spun microfibers.
For quality assurance of the raw material, for example of polypropylene, an extrusion test is performed. The volume flow index (MVR) of these polymers typically lies between 1200 and 2000 cm³/10 min. This places particular demands on the testing system.
With the Mflow, ZwickRoell offers the right instrument to address this challenge. It enables the measurement of high MVRs, and with die plug ensures that the material stays in the extrusion barrel during preheating and that afterward, the test is automatically run with high quality.
00:00 - Melt flow testing of meltblown PP for nonwoven fabrics
00:25 - Displacement transducer for MVR measurement
00:32 - Preheating
00:46 - MVR measurement wothout cutting
00:50 - MFR calculation
#meltflowtester #MVR #ASTMD5035

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More information: www.zwickroell.com/industries/medicalpharmaceutical/medical-textile-products/testing-of-face-masks/

[@MuhammadAsif-ru5mh]

why we are use position transducer during MVR measurement give me reason