Reclosable bag having hook and loop sealing strips

Claim 1

In a bag of flexible, frangible material including a bottom, opposed spaced sides, and opposed spaced front and rear pieces terminating at the top in front and rear edges respectively, the improvement to provide tamperproof resealability comprising: (a) a flap of the flexible, frangible material extending from the rear edge and descending from a fold-point downward over the front edge and down along the front piece; (b) a strip of adhesive disposed along the bottom edge of said flap to secure it to the front piece; (c) first and second elongated strips of a hook and loop fastening system disposed between said flap and front piece above and adjacent to said strip of adhesive with said first strip adhesively attached across the full width thereof to said flap and said second strip adhesively attached across the full width thereof to the front piece, one of said first and second strips including an engaging area along its upper longitudinal edge portion which is sufficiently narrower than the width of the engaging area of the other of said first and second strips, the remaining area along the lower longitudinal edge of the one strip lacking the ability for that strip to form an attachment to the adjacent area of the other strip; wherein said fold-point of said flap provides a means of placing said strips in substantial alignment with one another along their longitudinal edges so that one strip substantially overlies the other strip; and (d) fracturing means disposed for fracturing and splitting said flap adjacent the bottom edge of said first and second strips whereby upon initial opening of said fracturing means said flap is fractured and separated along a line closely adjacent said lower edge of said strips and thereafter when said first strip engages and substantially overlies said second strip with said longitudinal edges substantially aligned, said flap and a sufficient portion adjacent the lower longitudinal edge of said first strip can be laterally rolled back away from said second strip, to be directly gripped by human fingers to laterally pull said first strip out of attachment with said second strip whereby the initial lateral separation forces of both strips are intermediate the longitudinal edges of the strips substantially along the boundary of said engaging area and said remaining area so that peeling of said lower longitudinal edges of the strips from said flap and said front piece is prevented thereby avoiding delamination of either strip from the member of the bag to which it is adhesively attached.