A method for producing a sterilized oxygen-absorbing multilayer body is provided. The method may include:
irradiating with radiation an oxygen-absorbing multilayer body comprising at least an oxygen-absorbing layer containing a transition metal catalyst and a thermoplastic resin (a) having a tetralin ring as a structural unit and a layer containing a thermoplastic resin (b); and
heating the oxygen-absorbing multilayer body which has been irradiated with radiation in the sterilizing step at a temperature of the glass transition temperature of the thermoplastic resin (a) minus 20° C. or more and lower than the glass transition temperature of the thermoplastic resin (a) for 50 hours or more.
提供了一种生产灭菌吸氧多层体的方法。该方法可包括
用辐射辐照吸氧多层体,吸氧多层体至少包括一个含过渡
金属催化剂的吸氧层和一个以四
萘环为结构单元的热塑性
树脂(a),以及一个含热塑性
树脂(b)的层;以及
在热塑性
树脂(a)的
玻璃化温度负 20 摄氏度或以上且低于热塑性
树脂 (a)的
玻璃化温度的温度下,加热在灭菌步骤中经过辐射照射的吸氧多层体 50 小时或以上。