Blattförmiger Sauerstoff-Absorber und Verfahren zur Herstellung

摘要

A sheet-shaped oxygen absorber (100) of the present invention consists of a multi-layer structural body which comprises: an oxygen-absorbing resin sheet in which oxygen-absorbing composition is dispersed in a thermoplastic resin; an air-permeable covering member (2) which comprises a first heat-sealable resin layer (6) at least on one surface, and which is placed over one surface of said oxygen-absorbing resin sheet (1) so that said first heat-sealable resin layer directly contacts said oxygen-absorbing resin sheet; and an air-permeable or air-permeation-resistant covering member (3) which comprises a second heat-sealable resin layer (5) at least on one surface. and which is placed over the other surface of said oxygen-absorbing resin sheet so that said second heat-sealable resin layer directly contacts said oxygen-absorbing resin sheet The sheet-shaped oxygen absorber is constructed in a manner such that the first heat-sealable resin layer and the second heat-sealable resin layer are fused and sealed together along the sectioned portions where the sheet-shaped oxygen absorber is cut out by the ultrasonic heat sealing and cutting method. In this sheet-shaped oxygen absorber, the oxygen-absorbing resin sheet can be entirely covered, thereby preventing the oxygen-absorbing composition from leaking out and contacting food. Therefore, this sheet-shaped oxygen absorber is safe. Moreover, it provides superior productivity and the oxygen absorber can be freely produced in various shapes. $$