Laminated retort packaging material, packaging retort body using the same, and packaging retort laser printing body

摘要

PROBLEM TO BE SOLVED: To provide a packaging laminate retort material, packaging retort body, and packaging retort printed body or the like made thereof, that can form, by irradiating a low power laser that does not damage the film, a thick and easy to read printed line.SOLUTION: Provided are: a packaging laminate retort material, that can be printed by YAG or YVOlaser, obtained by laminating at least a substrate layer, a picture print layer, a print ground layer, a polyamide resin and a sealant layer in this order and comprising a gas-barrier layer, and having a print layer in which a region where the picture print layer and the print ground layer that is to become a laser print layer, are overlapping, and a region of only the print ground layer are formed, in which the region of only the print ground layer directly in contact with the substrate layer is made to be a laser print region and the print ground layer is a layer composed of a white color ink printable by a laser beam; a packaging retort body; and a packaging retort printed body produced by irradiating thereto a laser beam and forming a laser printed image.