Oblon, Spivak, McClelland, Maier & Neustadt
Extensible film or sheet and process for producing the same
 This invention provides an extensible film or sheet comprising 100 to 60 parts by weight of an ethylene copolymer having a density of less than 0.910 g/cm.sup.3 and 0 to 40 parts by weight of a linear polyethylene having a density of 0.910 to 0.945 g/cm.sup.3, specified by the following properties: PA1 1) film blocking as expressed by 180.degree. peel strength is 60 g/25 mm or less; PA1 2) tensile elongation is 750% or more; PA1 3) Elmendorf tear strength is 30 kg.cm/cm.sup.2 or more; and PA1 4) 1% secant modulus is 20 to 2,000 kg/cm.sup.2. The film or sheet of this invention has excellent extensibility and is free from blocking. It is also excellent in flexibility and hand and drape and can be preferably used as a film for gather of disposable diapers, etc., packing sheet for disposable diapers, and the like. 
Mitsubishi Kasei Corporation
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inventional additional additional inventional
Keishin Toshio Yoshinao
Handa Fujii Shinohara