Openable flexible packet

Claim 1

A thin, flexible, generally flat and rectangular pouch packet containing a finely-divided material therein, comprising a pair of generally flat substantially parallel opposed fluid-impervious rectangular walls having inside surfaces in generally face to face confrontation with the walls completely joined together around their peripheral top, bottom, and side edges and having a weakened tearing line substantially parallel with and in close proximity to be joined top edge of the packet defining a tear away marginal strip to facilitate the opening of the pouch packet to cup-like form, at least one of the walls having a thin elongated embossment providing a concave deformation relative to the inside surface of the wall, the concave deformation protruding outwardly from the generally flat inside surface of the wall to provide a channel between the inside surfaces of the opposing walls disposed in the generally face to face confrontation, the concave deformation starting at the tearing line at a position midway between joined inner side edges of the pouch packet and extending toward the bottom edge of the pouch packet and being dimensioned and arranged to facilitate folding of said wall outwardly to enable the packet to open into generally cup-like form upon the removal of the tear-away marginal strip and the application of pressure urging the side edges of the packet toward one another, whereby fluid may be added to the finely-divided material in said packet while in its generally cup-like form.