| 摘要 |
<p>The invention is related to a film or a sheet material comprising a monolayer, called core layer, comprising at least a blend of 10 to 40 % of the total weight of a polypropylene random heterophasic block copolymer and 60 to 90 % of an heterophasic polypropylene block copolymer wherein the elongation in the said film is higher than 550 % in the machine direction and higher than 700 % in the cross direction.</p> |
