The acid modified polyethylene resin and the crystalline polyethylene resin are selected so that a temperature at which the resin has a crystallinity of 60%, Tmα60, is lower than a temperature at which the resin has a crystallinity of 60%, Tmβ60, preferably lower than a temperature at which the resin has {HEAD ~ a crystallinity} of {TAIL ~ 70%}, Tmβ70, more preferably lower than a temperature at which the resin has a crystallinity of 80%, Tmβ80 
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The acid modified polyethylene resin and the crystalline polyethylene resin are selected so that a temperature at which the resin has a crystallinity of 60 % , Tmα60 , is lower than a temperature at which the resin has a crystallinity of 60 % , Tmβ60 , preferably lower than a temperature at which the resin has { HEAD ~ a crystallinity } of { TAIL ~ 70 % } , Tmβ70 , more preferably lower than a temperature at which the resin has a crystallinity of 80 % , Tmβ80
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