Patent ID: 9187233
Filing Date: 2015-11-17
Classification: B65D,C09D,Y10T

Abstract:
1. A heat insulating foamed paper container obtained by: joining a container body member, formed from a heat insulating foamed paper container material, with a bottom plate member, such that a first thermoplastic synthetic resin film forms an inner wall surface and a second thermoplastic synthetic resin film forms an outer wall surface, thereby forming a container precursor; and foaming the second thermoplastic synthetic resin film by heat treating the container precursor, wherein the heat insulating foamed paper container material comprises: (i) a base paper; (ii) the first thermoplastic synthetic resin film that covers a first surface of the base paper; (iii) the second thermoplastic synthetic resin film that covers a second surface, opposite the first surface, of the base paper, which has a lower melting point than the first thermoplastic synthetic resin film; and (iv) a printed layer provided on at least a part of a surface of the second thermoplastic synthetic resin film, said printed layer comprising at least one print pattern formed from a brightening ink composition comprising: (a) a brightening material, which is a non-leafing aluminum paste or aluminum flake, and having a solids content ranging from 5.20% to 20.15% by weight relative to a total weight of the brightening ink composition; (b) 1% to 3.5% by weight of silicon dioxide having a particle size of 2 μm to 20 μm, relative to a total weight of the brightening ink composition; (c) a binder resin which is a binder component comprising a polyurethane resin and a vinyl-comprising copolymer such that a mixing ratio of the polyurethane resin:vinyl-comprising copolymer ranges from 90:10 to 50:50 in terms of solids content; and (d) a mixed solvent comprising at least two solvents selected from the group consisting of an alcohol, a ketone, an ester and a hydrocarbon, wherein the mixed solvent is non-aromatic solvents.