| 摘要 |
PURPOSE:To obtain a readily handleable oxygen absorbing sheet capable of optionally controlling oxygen absorptivity by processing a resin composition consisting of a thermoplastic resin and an oxygen absorbent into a sheet having a specific thickness and then drawing the resultant sheet at a specific draw ratio. CONSTITUTION:A sheet obtained by processing a composition containing (A) 15-70wt.% thermoplastic resin, preferably a copolymer of ethylene and a 4-12C alpha-olefin having 0.87-0.915g/cm<3> density, 1000-9000Angstrom weight-average molecular chain length of a component extracted with xylene at 25 deg.C and containing 18-45wt.% above-mentioned extracted component and (B) 30-85wt.% component consisting of 95-99.9wt.% oxygen absorbent consisting of iron powder or iron powder and an electrolyte, preferably iron powder having preferably 0.1-100mum particle diameter and >=1000cm<2>/g specific surface area and 0.1-10wt.% electrolyte (preferably CaCl2, NaCl, etc.) into a sheet having 10mum to 5mm thickness and then drawing the resultant sheet in at least one axial direction at 1.5-8 times draw ratio. |
