Niedrig siegelnde, biaxial orientierte Polyolefin-Mehrschichtfolie, Verfahren zu ihrer Herstellung und ihre Verwendung
摘要
<p>The novel feature in a multilayer polyolefin film with a polypropylene-contg. base layer is that the top layer contains at least 50 wt.% of a low crystalline C3/C4 olefin resin mixt. (I) and is modified to have a seal initiating temp. of 85-110 deg.C by corona treatment and/or addn. of a propylene polymer. Claimed prodn. is by co-extrusion using draw-off rolls at 10-90 deg.C, followed by biaxially stretching at 4-7:1 (longitudinal) and 6-11:1 (transverse), heat fixing and opt. also corona treatment.</p>
