초록 ▼

A liquid-containing paperboard laminate carton including a one-piece plastic spout having a pair of opposing flanges sealed about an aperture in one of the carton walls to both the innermost and outermost surfaces of the carton wall. The double flange configuration not only forms a mechanically posi

A liquid-containing paperboard laminate carton including a one-piece plastic spout having a pair of opposing flanges sealed about an aperture in one of the carton walls to both the innermost and outermost surfaces of the carton wall. The double flange configuration not only forms a mechanically positive interlock between the plastic spout and the carton wall, but even more importantly, isolates the cut edges of the aperture from exposure to liquid either from within the container or from the environment through which the carton must pass from the point of manufacture until it is ready for disposal after its contents have been consumed. The spout preferably includes a liquid passageway having a membrane-type seal across its discharge orifice to provide evidence of tampering and a resealable closure member such as a screw cap or a snap-on closure held in place by means of a mating ring or groove on the spout. The cross-sectional area and configuration of the liquid passageway and discharge orifice in the spout are designed to prevent complete blockage by liquid when the package contents are being dispensed during a normal dispensing cycle, i.e., when the package is not being held completely upside down. Method and apparatus for securing the one-piece spout in sealed liquid type relation of both surfaces of the carton wall either sequentially or simultaneously are also disclosed.

대표청구항 ▼

A substantially liquid impervious carton having interconnected top, bottom and side walls, said carton being suitable for containing and dispensing liquids, said carton having an exterior surface and an interior surface and being comprised of a laminate material having an intermediate layer comprise

A substantially liquid impervious carton having interconnected top, bottom and side walls, said carton being suitable for containing and dispensing liquids, said carton having an exterior surface and an interior surface and being comprised of a laminate material having an intermediate layer comprised of paperboard, an innermost layer located on the interior surface of said carton and an outermost layer located on the exterior surface of said carton, said innermost and outermost layers of said laminate material being substantially impervious to liquid, said carton including a cut hole in one of said walls, said cut hole having a peripheral edge, said wall including said cut hole further including a one-piece preformed polymeric pouring spout having a liquid passageway including a discharge orifice located on the exterior surface of said carton, said preformed pouring spout having a preformed outermost flange and an innermost flange which is formed after insertion of said spout through said cut hole, both said outermost and said innermost flanges being permanently sealed in liquid tight relation about the peripheral edge of said cut hole to the outermost and the innermost layers, respectively, of the laminate material comprising said carton wall, whereby the paperboard layer exposed at the peripheral edge of said cut hole is isolated from any contact with the liquid contained in or dispensed from said carton through the liquid passageway in said one-piece pouring spout as well as any liquid to which said carton is exposed from the environment through which it passes prior to emptying of its contents and disposal thereof.