Stretched polypropylene film
AssigneeSumitomo Chemical Company, Limited
InventorsTakeshi Ebara, Kazuki Wakamatsu
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Abstract
Disclosed is a stretched film excellent in low-temperature heat sealability after corona treatment as well as that before corona treatment and/or in heat shrinkability, the stretched film being comprised of a layer comprising a copolymer of propylene with α-olefin and/or ethylene such that in measurement of a DSC curve the amount of the heat absorbed in the temperature range of from T−10 (° C.) to T+10 (° C.) accounts for from 15 to 36% of the amount of the heat absorbed in the temperature range of from 53 to 170° C., wherein T denotes a temperature (° C.) at which a maximum endothermic peak appears in the DSC curve.
Claims4
A film stretched at least uniaxially, the film comprising a layer comprising a copolymer of propylene with α-olefin and/or ethylene such that in measurement of a DSC curve the amount of the heat absorbed in the temperature range of from T−10 (° C.) to T+10 (° C.) accounts for from 15 to 36% of the amount of the heat absorbed in the temperature range of from 53 to 170° C., wherein T denotes a temperature (° C.) at which a maximum endothermic peak appears in the DSC curve.
Dependencies are inferred from the claim text.