Paper inner container for holding liquid refill contents

A paper inner container for storage of a refilling liquid content, which has a suction port that is formed in an upper surface thereof and allows insertion of a suction tube of a pump configured to pump up a liquid content and to dispense the liquid content to an outside of the paper inner container,

• the paper inner container being made of a paper material having a thermoplastic resin laminated on both of its surfaces, and comprising:
• four body panels, which form a body having a square tubular shape by coupling an edge of one of the four body panels to a vertical direction sealing panel;
• and
• a pair of upper-surface forming panels and a pair of side panels, which are continuously provided on upper edges of the four body panels to form the upper surface of the paper inner container,
• wherein the pair of upper-surface forming panels face each other and overlap in a vertical direction of the paper inner container,
• wherein the pair of side panels are positioned between the pair of upper-surface forming panels to face each other and are folded up outwardly from the pair of upper-surface forming panels while also overlapping the pair of upper-surface forming panels,
• wherein the pair of upper-surface forming panels have holes, which are formed at centers of the pair of upper-surface forming panels to serve as the suction port,
• wherein one of the holes, which is formed in at least a lower upper-surface forming panel of the pair of upper-surface forming panels, is sealed by a tearable film, and
• wherein a periphery of the lower upper-surface forming panel of the pair of upper-surface forming panels, an upper upper-surface forming panel of the pair of upper-surface forming panels, and the pair of side panels are bonded to each other to seal the paper inner container.