RESIN-COATED METAL SHEET FOR CONTAINER AND METHOD FOR MANUFACTURING THE SAME

摘要

Provided is a resin-coated metal sheet for a container having a resin layer (A) having a multi-layer structure containing polyester as a main component on an inner-surface side of the container when the metal sheet is formed into the container. The resin layer (A) contains terephthalic acid in an amount of 85 mol % or more, the resin layer (A) has at least two layers including an uppermost resin layer (a1) which comes into contact with contents and contains wax compounds in an amount of 0.10 mass % or more and 2.0 mass % or less with respect to the uppermost resin layer (a1), with respect to a Raman band of 1615 cm−1 determined by performing Raman spectroscopy on the uppermost resin layer (a1), the maximum value of the peak intensity ratio (IMD/IND) of peak intensity in a longitudinal direction to peak intensity in a thickness direction is 1.0 or more and 4.0 or less, a thickness of the uppermost resin layer (a1) is 0.5 μm or more and 10 μm or less, and a thickness of the resin layer (A) excluding the thickness of the uppermost resin layer (a1) is 5 μm or more and 20 μm or less.

主权项

1. A resin-coated metal sheet for a container, comprising a metal sheet and a resin layer (A) having a multi-layer structure containing polyester as a main component on an inner-surface side of the container when the metal sheet is formed into the container, wherein
1) the resin layer (A) contains terephthalic acid in an amount of 85 mol % or more, 2) the resin layer (A) has at least two layers including an uppermost resin layer (a1) which comes into contact with contents and contains wax compounds in an amount of 0.10 mass % or more and 2.0 mass % or less with respect to the uppermost resin layer (a1), 3) with respect to a Raman band of 1615 cm−1 determined by performing Raman spectroscopy on the uppermost resin layer (a1), a maximum value of a peak intensity ratio (IMD/IND) of peak intensity (IMD) in a longitudinal direction to peak intensity (IND) in a thickness direction is 1.0 or more and 4.0 or less, 4) the uppermost resin layer (a1) has a thickness of 0.5 μm or more and 10 μm or less, and 5) the resin layer (A) excluding the thickness of the uppermost resin layer (a1) has a thickness of 5 μm or more and 20 μm or less.