| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a retort packaging material having superior retort resistance, and especially having superior compact resistance, impact resistance, and hot water resistance, and usable under a sever retort condition of ≥130°C. <P>SOLUTION: The retort packaging material consists of, from the outside, either a base material layer-a barrier layer-a sealant layer, or a base material layer-a barrier layer-a barrier material reinforcement layer-a sealant layer. As the base material layer and/or the barrier material reinforcement layer, a biaxially stretched polybutylene terephthalate film consisting of either a polybutylene terephthalate resin, or a polyester resin composition in which a polyethylene terephthalate resin is combined with the polybutylene terephthalate resin in a range of ≤30 percent by weight, is used. <P>COPYRIGHT: (C)2013,JPO&INPIT |
