Foam Insulated Paper Container Paper Base Material, Foam Insulated Paper Container Sheet and Foam Insulated Paper Container

摘要

PROBLEM TO BE SOLVED: To provide a foam insulating paper container paper base material in which a top curl portion can be easily formed due to an excellent balance between tensile strength and compressive strength and sufficiently small rigidity, a foam insulating paper container sheet and foam using the same. Provide a heat insulating paper container. The present invention is a foamed heat insulating paper container paper base material composed of a paper base material containing cellulose pulp as a main component and a water-soluble resin layer provided on at least one surface of the paper base material. , The content of coniferous kraft pulp with respect to the cellulose pulp is 20% by mass or less, and the tensile strength (kN / m) in the MD direction is measured according to the ring crush method specified in T, JIS P8126: 2015. When the compressive strength (kN / m) in the direction is C, the T / C is 2.48 or more, and the taber rigidity in the MD direction measured in accordance with the Taber stiffness tester method specified in JIS P8125: 2000. Is 17.0 mN · m or less. [Selection diagram] Fig. 4