초록 ▼

A method for manufacturing automatic consecutively opened thermoplastic T-shirt bags for dispensing from a conventional supporting rack. The method involves providing a continuous flattened tube of thermoplastic film and applying adhesive solution using a printing press to form adhesion regions on t

A method for manufacturing automatic consecutively opened thermoplastic T-shirt bags for dispensing from a conventional supporting rack. The method involves providing a continuous flattened tube of thermoplastic film and applying adhesive solution using a printing press to form adhesion regions on the outside of the tube. The adhesive solution can be applied using a flexo or gravure printing process. The method then involves forming side gussets in the tube and making traverse seals in the tube, thereby dividing the tube into pillowcases. The pillowcases are separated at the seals to form a series of end-sealed gussetted pillowcases which are stacked to form a bag pack. Next, the bag pack is cut along a bag-mouth contour to from a plurality of T-shirt bags. The bag-mouth contour forms a set of laterally spaced handles each having a receiving aperture for a conventional support rod of a dispensing rack, a central tab having a mounting aperture, and an open mouth region. The adhesion regions are optimally located below the receiving apertures and above the lowest point of the bag-mouth contour. Finally, slight pressure is applied to the proximate area of the adhesion regions of each bag in the bag pack to form a disengageable link between consecutive bags. The invention also relates to the T-shirt bags and the bag packs produced from this method.

대표청구항 ▼

A bagging system to automatically open and dispense consecutive thermoplastic T-shirt-type bags while supporting said bags in an open position to facilitate loading and easy removal of the loaded bags, said system comprises: a. a bag pack comprising a plurality of stacked T-shirt-type bags in approx

A bagging system to automatically open and dispense consecutive thermoplastic T-shirt-type bags while supporting said bags in an open position to facilitate loading and easy removal of the loaded bags, said system comprises: a. a bag pack comprising a plurality of stacked T-shirt-type bags in approximate alignment, each bag comprising: (i) a front and rear wall, the walls are integrally connected at sides, sealed at a bottom end and sealed at a top end, said walls have an open mouth region; (ii) laterally spaced handles integrally and upwardly extending from each wall on opposite sides, each handle has a receiving aperture in its intermediate region; (iii) a disconnectable central tab integrally and upwardly extending from each wall at a central area of said mouth region, said central tab has a crescent-like mounting aperture and detachable tab ties, said tab ties have a particular tensile strength; (iv) disengageable adhesion regions connecting the rear wall of a bag to the front wall of the following bag in said bag pack, said adhesion regions form a disengageable link between consecutive bags of a predetermined peeling strength, said adhesion regions being located on each of said handles; and, b. a mounting and dispensing rack for mounting said bag pack and dispensing of said bags. A bag pack produced by the method of manufacturing automatic consecutively opened thermoplastic T-shirt bags for dispensing from a mounting and dispensing rack, which comprises: a. providing a continuous flattened tube of thermoplastic film; b. applying adhesive solution using a printing press to form adhesion regions on the outside of said tube in area to subsequently be formed into handles, as set forth below; c. forming side gussets in said tube; d. making traverse seals in said tube thereby dividing said tube into pillowcases, each seal defines a bottom end of a pillowcase and a top end of the following pillowcase; e. separating said pillowcases at said seals to form a series of end-sealed gussetted pillowcases; f. stacking said pillowcases in approximate alignment to form a bag pack; g. clamping one end of said bag pack to maintain its approximate alignment and cutting through said bag pack along a bag-mouth contour to form a plurality of T-shirt bags, said bag-mouth contour forms a set of laterally spaced handles each having a receiving aperture, a central tab having a mounting aperture, and an open mouth region; and, h. applying slight pressure to the proximate area of said adhesion regions of each bag in said bag pack to form a disengageable link between consecutive bags.