METHOD OF MANUFACTURING DRAWN DEOXIDIZED MULTILAYER BODY

摘要

PROBLEM TO BE SOLVED: To orient a laminate containing a deoxidized composition by a high drawing factor, to make a deoxidized layer porous and an oxygen permeation velocity large thereby and to manufacture industrially a deoxidized film or sheet improved in deoxidization velocity and free of elution of a deoxidized component. SOLUTION: In manufacturing a deoxidized multilayer body which is constituted of the deoxidized layer constituted of continuously porous resin blended with the deoxidized composition, and of an oxygen-permeable resin layer constituted of oxygen-permeable resin and provided at least on one surface of the deoxidized layer, the deoxidized layer is made continuously-porous by a process wherein thermoplastic resin blended with the deoxidized composition and oxygen-permeable thermoplastic resin are laminated by co-extrusion with the nip linear pressure of cooling rolls made 200 N/cm or below, and then oriented.