Carton equipped with liquid pouring-out device

A carton to be filled with a liquid, comprising:

• a liquid-impermeable carton container having a wall structure in which a mounting aperture is provided, said carton container having a gas barrier layer;
• and
• a liquid pouring device fixed to said wall structure at a position of said mounting aperture, said pouring device having a cylindrical spout, a partition wall formed integrally across the bottom of the spout and an annular flange formed integrally with the spout around said partition wall, said partition wall and said annular flange extending in substantially the same plane, the spout being fitted in said mounting aperture with said annular flange firmly attached to the inner surface of said wall structure, said pouring device having therein breaking means for breaking said partition wall, said partition wall and said annular flange having a common planar inner surface and form a shallow circular recess in which a gas barrier film is fitted and bonded;
• wherein the gas barrier layer of said carton container and the gas barrier film are overlapped in a peripheral area of said mounting aperture when viewed in an outside-to-inside direction with respect to said wall structure.