| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a used paper collecting bag forming a bag shape having a rectangular bottom surface when housing used paper, excellent in shape keeping performance of the bag, capable of binding the used paper by a tape by cutting the bag in perforations after housing the used paper to form the tape on a side surface of the bag. SOLUTION: This used paper collecting bag made of a plastic film is composed of (1) a bag A having the eight perforations reaching the bag bottom surface from the bag upper edge and having a residual side surface film becoming the tapes for binding the used paper by removing a cutoff part by cutting the bag side surface film in the perforations after housing the used paper and (2) a bag B having a bottom surface having almost the same dimension as the bottom surface of the bag A and the depth of 1/3 to 3/4 of the bag A, having the bag upper edge turned inside the bag, thermally welding an outside film of a side surface of the bag and a turned-in inside film by a welding line parallel to the bottom surface, and fitting and insulating a bottom part of the bag A. This method manufactures the bag B from a long size tubular plastic film.</p> |
