30-05-2019 дата публикации
Номер: US20190160795A1
The disclosure provides a multilayer blown film for stretch hood made from or containing a layer made from or containing a first polyolefin composition made from or containing from 20 wt % to 80 wt %, based upon the total weight of the first polyolefin composition, of Component A) and from 20 wt % to 80 wt %, based upon the total weight of the first polyolefin composition, of Component B); 1. A multilayer blown film for stretch hood comprising: a first polyolefin composition comprising:', 'from 20 wt % to 80 wt %, based upon the total weight of the first polyolefin composition, of Component A) and', 'from 20 wt % to 80 wt %, based upon the total weight of the first polyolefin composition, of Component B);', 'wherein the amounts of A) and B) being referred to the total weight of A)+B) and the sum of the amount of A) and B) being 100; and', 'wherein', 'Component A) is an ethylene copolymer comprising', [{'sub': 3', '1', '24, '(1) ethylenically unsaturated organic monomer of esters of unsaturated C-C20 monocarboxylic acids and Cto Cmonovalent aliphatic or alicyclic alcohols, and'}, {'sub': 2', '18, '(2) vinyl esters of saturated C-Ccarboxylic acids;'}, 'wherein the ethylene copolymer having a density ranging from 0.920 to 0.935 g/mL; and an MFR (190° C./2.16 kg) ranging from 0.10 to 20.00 g/10 min; and, 'a recurring unit derived from an ester selected from, [{'sub': i', 'i', 'i, '(i) 5-35% by weight, based upon the total weight of Component B, of a propylene homopolymer containing 5% by weight or less of a fraction soluble in xylene at 25° C. (XS), or a propylene ethylene copolymer containing 90% by weight or more of propylene units; containing 10% by weight or less of a fraction soluble in xylene at 25° C. (XS), both the amount of propylene units and of the fraction XSbeing referred to the weight of (i);'}, {'sub': 3', '8', 'ii', 'ii, '(ii) 20-50% by weight, based upon the total weight of Component B, of a copolymer of ethylene and a C-Calpha-olefin containing from 0. ...
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