METHOD AND APPARATUS FOR MANUFACTURING STAND-UP PLASTIC BAGS

摘要

A method and apparatus (F) for manufacturing a stand-up plastic bag. The apparatus includes a section for supplying a continuous length of heat-sealable material (A), and a bag assembly section (B, C, D, E) connected to the supply section for producing a bag from the heat-sealable material having close sides, a closed bottom and an open mouth. The apparatus also includes a section for receiving the bag (F) after it is assembled and shaping the bag into a stand-up plastic bag. The bag shaping section includes a series of stations including: a first station for forming opposed faces, opposed sides, and a substantially flat bottom; a second station for creasing at least the bottom of the bag, so that the bottom folds inwardly and does not obstruct the front and back display surfaces of the bag; and a third station for unloading the bag.