Packaging material making machine
AssigneeEasypack Limited
InventorsMark Alan Kempster, Timothy Edward Lawrence Panther
Life of this patent
Estimating the term…
Abstract
In a machine for making packaging material, paper is pulled off a roll by two pairs of spaced rubber nip rollers, the lower ones of which rollers are driven. The edges of the paper roll over as the paper passes through the former and the rolled paper is pushed into a pair of meshing gear wheels in order to hold the rolled dunnage together loosely. A pair of blades cut the dunnage to the required length after it has passed through the gear wheels.
Claims13
In a packaging material making machine having a sheet material supply roller arranged to supply sheet material to a former, pulling means including at least one driven rotatable member arranged to pull the sheet material in a direction of travel from the supply roller to the former, and connecting means including at least one driven rotatable member located downstream of the pulling means and arranged to assist in maintaining overlapping layers of the sheet material together, characterized in that the pulling means are arranged to act along the former and in that the driving surface of the driven rotatable member of the pulling means is arranged to travel at a greater rate than the driving surface of the driven rotatable member of the connecting means in order to cause the sheet material to be pushed to the connecting means and thus to bunch, wherein the resulting packaging material is increased in bulk.
A method of making packaging material comprising:
- employing pulling means to pull sheet material in a direction of travel from a supply roller and to push the sheet material from the supply roller to a part of the machine that at least partially connects overlapping portions of the sheet material and employing a former to cause the shape of the sheet material to change;
- and wherein (a) the pulling means acts along the former and (b) the pulling means travels at a greater rate than the part that at least partially connects overlapping portions of the sheet material and pulls the sheet material at a greater rate than the rate at which the sheet material passes through the part that at least partially connects overlapping portions of the sheet material, which causes the pulling means to push the sheet material to the part that at least partially connects the overlapping portions, causing the sheet material to bunch and the resulting packaging material to increase in bulk.
Dependencies are inferred from the claim text.