| 摘要 |
A packaging material (1) according to the present invention includes: a heat resistant resin stretched film layer (2) as an outer layer; a thermoplastic resin layer (3) as an inner layer; a metal foil layer (4) arranged between these layers; and a colored ink layer (10) arranged between the metal foil layer (4) and the heat resistant resin stretched film layer (2). As the heat resistant resin stretched film, a heat resistant resin stretched film having a hot water shrinkage rate of 2% to 20% is used, and the heat resistant resin stretched film layer (2) and the colored ink layer (4) are integrally laminated via an easily adhesive layer (30). In this packaging material, at the time of forming and sealing, and even being used in a somewhat severe environment such as high-temperature and humid environment, the colored ink layer will not be detached from the heat resistant resin stretched film layer. |
