Birch, Stewart, Kolasch & Birch, LLP
Film-laminated metal plate having excellent retort adhesiveness, and method for manufacturing same
A film-laminated metal plate having excellent retort adhesiveness includes: a metal plate; a resin film thermally fusion-bonded to a surface of the metal plate; and a bubble contained between the metal plate and the resin film. An average bubble height of three bubbles with higher heights among the bubbles measured by using a 3D analysis image of a laser microscope is 0 μm or more and 5.0 μm or less. The test piece is obtained by cutting a portion of one end side of the metal plate in a longitudinal direction while leaving the resin film on a side which becomes an inner surface side of the container when the film-laminated metal plate is processed into a container. When a retort treatment is carried out on the test piece at a temperature of 125° C. for 30 minutes in a state in which a 100 g weight is hung from the one end side of the test piece and the test piece is folded back toward the other end side of the test piece in the longitudinal direction by 180°, a length of the resin film peeled off from the metal plate of the test piece is 15 mm or less.
NIPPON STEEL CORPORATION
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B29C B32B B32B B32B B32B B65D B65B B65D B32B B65B B32B B32B
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Tadaaki Tomohiro Satoshi Kazushi Akihiko Yoichiro Nobuo
Ochiai Mizutani Kato Iwakiri Hirata Mori Kadowaki