| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent oozing of fat out of a vessel when chemicals contains oil affinity substance such as fatty emulsion by specifying the densities of resins for constituting respective layers in the film of a four-layer structure made of ethylene-α-olefin copolymer. SOLUTION: The multilayer film has a four-layer structure made of ethylene-α-olefin copolymer. The densities of the resins for constituting the respective layers are sequentially first layer: 0.935 to 0.950g/cm<3> , second layer: 0.885 to 0.920g/cm<3> , third layer: 0.930 to 0.950g/cm<3> , and four layer: 0.925 to 0.940g/cm<3> , and the resin density of the third layer is larger than that of the fourth layer. As the embodiment of the vessel by applying the film, the vessel 1 having a port material 2 having a rubber plug 3 mounted at the upper part of the vessel 1 is included.</p> |
