Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1992-03-16
1993-04-20
Terrell, William E.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493226, 493231, 493264, 493926, B31B 3714, B31B 3326, B31B 3362, B31B 3786
Patent
active
052037584
ABSTRACT:
This invention relates to a method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle portion, and it also relates to sacks or bags manufactured in accordance with this method. For the solution of the problem to simplify already known methods, onto a continuously advanced flat web two strips of sealing-wax which are in parallel to each other and perpendicular to the lateral edges are applied on one side at distances of one bag length, respectively, and at corresponding locations of the back side of the flat web four short strips of sealing-wax are applied, and between the strips of sealing-wax two reinforcements are glued thereto with their whole surface. Below the first reinforcement a folded sheet with a leg is glued, whereas the other leg is folded back thereonto. Below the second reinforcement an area is provided with glue which in size corresponds to the leg. On one side of the flat web an adhesive strip is applied. By forming lateral folds the web is folded to a tube such that the free leg is arranged on the glued area and that simultaneously the two reinforcements are arranged above each other. The sealing-wax strips are reactivated and fold edges are pregrooved. Finally, in the section of the reinforcements lying on top of each other a griphole is punched. The still open bottom is folded to be closed in the usual manner after filling of the bag.
REFERENCES:
patent: 3472130 (1969-10-01), Brockmuller
patent: 3605570 (1971-09-01), Goodwin
patent: 3611883 (1971-10-01), Grob
patent: 3853040 (1974-12-01), Achelpohl
patent: 4018142 (1977-04-01), Canno
Achelpohl Fritz
Jurgens Werner
Terrell William E.
Windmoller & Holscher
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