A multi layer film 1, wherein {HEAD ~ a temperature} at which the acid modified polyethylene resin has a crystallinity of 60%, Tmα60, is lower than {TAIL ~ a temperature} at which the crystalline polyethylene resin has a crystallinity of 80%, Tmβ80 
is lower than
A multi layer film 1 , wherein { HEAD ~ a temperature } at which the acid modified polyethylene resin has a crystallinity of 60 % , Tmα60 , is lower than { TAIL ~ a temperature } at which the crystalline polyethylene resin has a crystallinity of 80 % , Tmβ80
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH