FIELD: personal protection equipment.
SUBSTANCE: invention relates to non-woven meltblowns for use in products with improved barrier properties. Non-woven meltblown contains meltblown fibers obtained from at least 80 % by weight of the polypropylene composition, which includes a polymer of propylene, optionally a polymeric nucleating agent. Polypropylene composition has a melt flow rate MFR2 (230 °C/2.16 kg) from 20 to 5000 g/10 minutes or molecular weight Mw (as measured using GPC) less than 180,000 g/mol, molecular weight distribution (MWD) > 2 and the melting point Tm from ≥ 130 °C to ≤ 170 °C. In addition, the polypropylene composition is subjected to visbreaking without the use of peroxide.
EFFECT: non-woven meltblown according to the invention is characterized by the absence of pellets and improved quality.
15 cl, 7 tbl
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