| abstract |
A multi-layer construction film comprising at least one layer (A) of ethylene-vinyl alcohol copolymer and having an ethylene content of 20-60 mol %, and a melt index of (eta) Eg/10 min., at least one adhesive resin layer (B) of ethylene polymer and having a melt index of (eta) Ag/10 min. and density of not more than 0.90 g/cm3, and a plastic film (C) wherein the layer (B) is laminated adjacent to the plastic film (C), which satisfies the following formulas. 0.5 (my)m<=a<=20 (my)m(1) 0.5 (my)m<=b'<=20 (my)m(2) 1 (my)m<=a+b<=30 (my)m(3) 0.08<=(eta) E/(eta) A<=8(4) wherein a is the thickness of the entire layer (A), b is the thickness of the entire layer (B), and b' is the thickness of one layer of layer (B), and a method for producing same. The multi-layer construction film of the present invention has gas barrier properties, flex resistance, and resistance to boiling, and does not yellow at ultraviolet rays. |