Carton equipped with liquid pouring-out device
First Claim
1. 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.
1 Assignment
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Accused Products
Abstract
A carton container to be filled with liquids such as beverages, comprises a wall structure of liquid impermeable property, a liquid pouring-out device fixed to a mounting aperture of the wall structure through which device the liquid is poured out, a gas barrier layer provided in said wall structure to prevent gas within the container from passing through the wall structure to the outside, and a gas barrier film provided across the liquid pouring-out device to prevent gas within the container from escaping through the pouring-out device, the gas barrier layer and the gas barrier film being overlapped or continuous when seen in outside-to-inside direction with respect to the wall structure, whereby gas within the container does not escape to the outside even after elapse of a prolonged period of time.
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Citations
6 Claims
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1. A carton to be filled with a liquid, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification