Abstract: A method of manufacturing a gusseted pinch bag from polypropylene. A sheet or seamless tube of polypropylene is provided. The sheet is preferably comprised of one or more layers of axially and/or biaxially oriented polypropylene. Perforation lines in a pinch pattern are formed in the sheet or tube. Preferably a laser forms a series of small, closely spaced holes in the sheet along the perforation line. The laser heats the plastic surrounding the holes, causing the polypropylene molecules between the holes to lose their orientation. Thus, the polypropylene in the perforation line between the holes is substantially weakened. If a sheet is used, it is folded into a gusseted tube and the edges are sealed together to make a tube. If a seamless tube is used, the tube is gusseted. In either case, a lateral force is then applied to the terminal tube, breaking the perforation line and separating the terminal tube from the sheet. The bottom end of the tube is then sealed, thereby forming a bag.

Abstract: A self-kindling fuel package comprising a container with walls and at least one pinched closure with a semi-rigid wick longitudinally folded into the end closure creating an oxygen channel within the end closure, and a method of constructing the self-kindling fuel package.

Abstract: Apparatus for producing handled bags includes a web dispenser; a perforator for creating perforated seams transversely across the web at predetermined intervals to generate a succession of adjacent web sections; means for attaching at least one handle to each web section; a tube forming mechanism for configuring the web into a tubular configuration; a separating device for breaking the perforated seams to separate the adjacent web sections without disturbing the handles; and a bottom forming mechanism for closing the bottom end of each separated web section. The separating device includes a rotatable first breaker roll having a pressure bar provided thereon and a rotatable second breaker roll having a cooperating gap formed therein for receiving the pressure bar as the first and second breaker rolls are synchronously rotated with the web fed therebetween.