Patent ID: 7704407
Filing Date: 2010-04-27
Classification: B65D,C08K,Y02E

Abstract:
1. An oxygen-absorbing container cap which has an oxygen absorbent-containing resin layer inside the container cap, wherein the oxygen absorbent-containing resin layer has a lattice-shaped convex part and/or concave part inside the container cap, and wherein the oxygen absorbent-containing resin layer is formed of a base resin which is a thermoplastic resin having an oxygen permeability of 10 −4 cc·mm/cm 2 ·day·atm or more under condition of 23° C. and 40% Relative Humidity and a water-absorbing amount of 0.01% or more in pure water of 23° C., and comprises an oxygen absorbent in an amount of 1 to 100 parts by weight per 100 parts by weight, and the oxygen absorbent-containing resin layer is obtained by dispersing and blending an oxygen absorbent containing 20% or more of particles having a particle diameter of 1000 μm or less at a ratio of 20% or less to the base resin, and a water-absorbing material with an Hydrophile-Lipophile Balance value of 4.3 to 10 at a ratio of 20% or less to the base resin.