Dai Nippon Printing Co., Ltd.

Yasunari Iio

Hideaki Takahashi

Daisuke Tanaka

Kaoru Watanabe

Yoshihiro Kishimoto

Kiyoshi Toda

Azusa Suzuki

Koki Akutsu

Kazuhiro Takushima

Shohei Itami

Kaeko Hayashi

Satomi Ishida

Keita Goto

Shiomi Nakagawa

Mariko Nakatsuka

Yuki Tatsuta

Kanari Aono

Provided are: a laminate film which is equipped with a vapor-deposited aluminum oxide film exhibiting high barrier performance and excellent so-called retort resistance, and also exhibits favorable adhesion between the vapor-deposited aluminum oxide film and a plastic substrate even after undergoing a hydrothermal treatment; a barrier laminate film containing the laminate film; and a barrier packaging material which uses the barrier laminate film. A laminate film exhibiting improved adhesion strength and barrier performance, wherein: a transition region prescribing adhesion strength is formed between the surface of the substrate film and the vapor-deposited film which primarily comprises the formed vapor-deposited aluminum oxide film, by subjecting the vapor-deposited aluminum oxide film of the laminate film to a time-of-flight secondary ion mass spectrometry (TOF-SIMS) method using a Cs (cesium) ion gun; the transition region contains elementally bonded AlOH, which can be modified into aluminum hydroxide which can be detected by etching using TOF-SIMS; and the rate of modification in the transition region into aluminum hydroxide, which is defined as the ratio of the modified transition region to the vapor-deposited aluminum oxide film specified by carrying out etching using TOF-SIMS, is prescribed to be 5-60%, inclusive.

Barrier laminate film, and packaging material which uses barrier laminate film

To suppress damage such as the formation of holes and wrinkles in laminated bodies constituting a bag. A bag having a storage section includes: laminated bodies that include a sealant film positioned on an inner surface of the bag and at least one plastic film positioned on an outer surface side of the sealant film; and a seal section where inner surfaces of one pair of laminated bodies are joined together. The seal section has an outer edge seal part that is positioned along an outer edge of the bag, and a steam-releasing seal part that is positioned closer to a center point side of the storage section than the outer edge seal part and peels off due to an increase in pressure in the storage section. The steam-releasing seal part peels off when the pressure in the storage section is 130 kPa or lower.

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Tokyo, Japan

Yasunari Iio