| 摘要 |
PURPOSE:To obtain a packing material capable of stably receiving solvent type content over a long period of time by thermally bonding and laminating a film compounded by the coextrusion of a heat-bondable polyolefin resin and other polyolefin resin under melting to one surface of an aluminum foil to form a solvent contact surface and applying other plastic film to the other surface of said foil by dry lamination. CONSTITUTION:By applying the property becoming perfectly compatible with a polyolefin resin in a molen state of a heat-bondable polyolefin resin, both resins are compounded by coextrusion to form a film and this compounded film is bonded to an aluminum foil under heating and the other surface of the aluminum foil is bonded to other base material, for example, a polyethylene terephthalate film by dry lamination. By this method, a laminated packing material excellent not only in solvent resistance but also in the bonding strength with the aluminum foil is obtained. |
