HEAT SEALABLE MULTILAYER POLYOLEFINIC FILM STRUCTURES

2100360 9212010 PCTABS00014 Multilayer thermoplastic film structures comprising at least one heat-sealable outer layer (A) and at least one core layer (B) are disclosed. Layer (A) has improved heat sealability after irradiation (e.g. electron beam). Layer (B) has improved shrinkage after irradiation...

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Bibliographische Detailangaben
Hauptverfasser:	CHUM, PAK-WING S, KOCH, KAELYN C
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	2100360 9212010 PCTABS00014 Multilayer thermoplastic film structures comprising at least one heat-sealable outer layer (A) and at least one core layer (B) are disclosed. Layer (A) has improved heat sealability after irradiation (e.g. electron beam). Layer (B) has improved shrinkage after irradiation. Layer (A) is a linear polyethylene having a melt index from 2 to 20 g/10 minutes, a density from 0.88 to 0.92 g/cm3, a molecular weight distribution (I10/I2) from 5 to 8, a fraction of the polyethylene having a degree of branching less than or equal to 2 methyls/1000 carbons of not more than 15 percent by weight and a fraction of the polyethylene having a degree of branching greater than or equal to 25 methyls/1000 carbons of not more than 25 percent by weight of the polymer. Layer (B) is a linear polyethylene having a melt index from 0.05 to 5 g/10 minutes, a density from 0.88 to 0.94 g/cm3 and a molecular weight distribution (I10/I2) from 8 to 30.