PERMEABLE POLYMER FILM
    34.
    发明授权

    公开(公告)号:EP2648910B1

    公开(公告)日:2018-08-08

    申请号:EP11796963.4

    申请日:2011-12-08

    Abstract: Films especially suitable for the packaging of fresh foodstuff, like salad and vegetables, due to their valuable balance of high permeability to oxygen and optimal permeability to water vapour, comprising at least one layer A) and at least one layer B), wherein the layer A) comprises a copolymer of propylene with hexene-1 containing from 3 to 9% by weight of recurring units derived from hexene-1, said copolymer having a melting temperature from 125° C. to 143° C., and the layer B) comprises a polyolefin composition containing (all percentages being by weight): a) 10-40% of one or more propylene homopolymers or copolymers containing over 85% of propylene and having a fraction insoluble in xylene at room temperature greater than 80%; and b) 60-90 of one or more copolymers of ethylene with alpha-olefin(s), containing ethylene in a quantity from 20 to 80%, and having solubility in xylene at room temperature greater than 70%.

    POLYMER FILAMENT
    39.
    发明授权
    POLYMER FILAMENT 有权
    聚合物长丝

    公开(公告)号:EP2480707B1

    公开(公告)日:2014-03-05

    申请号:EP10751696.5

    申请日:2010-09-13

    CPC classification number: D01F6/46 D01D5/42 D06N7/0065 E01C13/08

    Abstract: A polymer filament comprising a polyolefin composition which comprises at least 10% by weight of one or more copolymer(s) (I) of propylene with one or more comonomers selected from ethylene, C4-C10 α-olefins and their combinations, said copolymer or copolymers (I) having MFR from 0.5 to 10 g/10 min. and containing units deriving from the said comonomers in a total amount of from 0.5 to 25% by weight with respect to the total amount of all momoner units in the copolymer, provided that, in the absence of comonomer units deriving from C6-C10 α-olefins, the amount of comonomer units deriving from ethylene or C4-C5 α-olefins or their combinations is at least 2.5% by weight.

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