[Object] to provide a heat seal laminate and a package that reduce environmental load, have good heat sealing properties and blocking resistance, and have a small amount of residual solvent. [Solution] there is provided a paper sheet having a paper substrate and a heat seal layer, where the heat seal layer contains a caseinate resin, and a moisture content in the total mass of the heat seal layer is 7O720mass perent, Laminate for packaging material. Selected drawing: None
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