Method for making paper dunnage
View Patent ↗Dunnage making machine and method in which a web of paper is drawn across a forming bar with curved end sections to roll the edge portions of the paper, then drawn through a first throat section to urge the rolled edge portions toward each other and cause them to gather, and thereafter through a second throat section of lesser dimension than the first to gather the central portion of the paper and further gather the edge portions. The gathered paper is then pressed with a roller to crumple it, following which the crumpled paper is perforated along a serrated tear line.
1. A method of making paper dunnage, comprising the steps of: drawing a web of paper across a forming bar with curved end sections to roll the edge portions of the paper, drawing the paper through a first throat section to gather and pleat the rolled edge portions, drawing the paper with the pleated edge portions through a second throat section to gather and pleat the central portion of the paper, pressing the gathered and pleated portions of the paper with a roller to crumple the paper, and perforating the crumpled paper along a serrated tear line.
2. The method of claim 1 wherein the paper is drawn over the forming bar and through the throat sections by engaging the paper with a roller of lesser lateral extent than the first throat section so that only the central portion of the paper is tensioned by the roller.
3. The method of claim 1 wherein the paper is drawn over the forming bar and through the throat sections by the crumpling roller.
4. The method of claim 1 wherein the paper is perforated along a zig-zag line by engagement with knife blades mounted in a zig-zag pattern on a rotating mandrel.
5. A method of making paper dunnage, comprising the steps of: drawing a web of paper across a forming bar with curved end sections to roll the edge portions of the paper, drawing the paper through a first throat section to gather and pleat the rolled edge portions, drawing the paper through a second throat section of lesser dimension than the first to gather and pleat the central portion of the paper, and passing the gathered and pleated portions of the paper between a pair of crumpling rollers to crumple the paper.
6. The method of claim 5 including the additional step of perforating the crumpled paper along a serrated tear line.
7. The method of claim 5 wherein the paper is drawn over the forming bar and through the throat sections by engaging the paper with a roller of lesser lateral extent than the first throat section so that only the central portion of the paper is tensioned by the roller.
8. The method of claim 5 wherein the paper is drawn over the forming bar and through the throat sections by the crumpling rollers.
9. A method of making paper dunnage, comprising the steps of: drawing a web of paper across a forming bar with curved end sections to roll the edge portions of the paper, drawing the paper through a first throat section to gather and pleat the rolled edge portions, drawing the paper with the pleated edge portions through a second throat section to gather and pleat the central portion of the paper, pressing the gathered and pleated portions of the paper with a crumpling roller to crumple the paper.
10. The method of claim 9 wherein the paper is drawn over the forming bar and through the throat sections by engaging the paper with a roller of lesser lateral extent than the first throat section so that only the central portion of the paper is tensioned by the roller.
11. The method of claim 9 wherein the paper is drawn over the forming bar and through the throat sections by the crumpling roller.