Hole-forming means for stress concentration areas for sealed containers and packages

摘要

The present invention relates to a hole-forming structure of a stress concentration unit for use in a container or package with a fluid product that allows a restrictive member of a flowable product with one hand. The stress concentrator comprises a substantially flat relatively rigid sheet, one or more long, thin, generally channel shaped protrusions, and a break across the one or more protrusions. Packaged pouches containing fluent products may also be attached to the stress concentration. The breakage of the stress concentration projecting member across the break line forms a hole-forming pattern that expands to form a large hole under pressure on the container or package.;Modifications of the present invention implement breakable stress concentrations on containers or dispensers used in a wide variety of liquid products. In another embodiment, the stress concentration portion is implemented inside the pouch having the slit opening portion, wherein the flowable product flows through the stress concentration portion and the slit opening portion at the time of breakage of the stress concentration portion.