A mill for an air-formed cellulose blank product and method for using the same
AssigneePulPac AB
InventorOve LARSSON
Life of this patent
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Abstract
A mill for separating fibres including: a mill head for separating fibres from a compressed pulp sheet, an enclosure, an inlet opening, an outlet opening, an infeed region arranged to feed a first pulp sheet or a second pulp sheet to the mill head, wherein the infeed region includes a first infeed path, first infeed path is arranged to be in an active state when a second infeed path is in an idle state, where a first pulp sheet is arranged to be fed to the mill head by the active first infeed path, and where the second pulp sheet is arranged to rest in the idle second infeed path, wherein the infeed region is arranged to switch state of the infeed paths when a signal is issued indicating the end of a first pulp sheet in the active first infeed path.
Claims14
A mill for separating fibres from a compressed pulp sheet for forming non-flat cellulose products from an air-formed cellulose blank structure, the mill comprising:
- a mill head for separating fibres from a compressed pulp sheet;
- an enclosure enclosing the mill head;
- an inlet opening for air;
- an outlet opening for an air-fibre mixture;
- an infeed region arranged to feed a first pulp sheet or a second pulp sheet to the mill head,
- wherein the infeed region comprises a first infeed path and a second infeed path, where the first infeed path is in an active state when the second infeed path is in an idle state, where a first pulp sheet is arranged to be fed to the mill head by the active first infeed path, and where the second pulp sheet is arranged to rest in the idle second infeed path,
- wherein the infeed region is arranged to switch state of the infeed paths when a signal is issued indicating the end of a first pulp sheet in the active first infeed path, and
- wherein the infeed region comprises a driven feeder roller, where the feeder roller is arranged to rotate in a first direction when feeding a first pulp sheet to the mill head in the first infeed path, and to rotate in a second direction when feeding a second pulp sheet to the mill head in the second infeed path.
A method for separating fibres from a compressed pulp sheet by using a mill, the method comprising the steps of:
- feeding a first pulp sheet to a mill head of the mill in a first infeed path by rotating a feeder roller in a first direction, where the first infeed path is in an active state;
- positioning a second pulp sheet in a second infeed path, where the second infeed path is in an idle state, where the second pulp sheet is held in a fixed position;
- monitoring the first pulp sheet in the first infeed path with a first detector arranged in the first infeed path;
- when the first detector indicates the end of the first pulp sheet in the first infeed path, rotating the feeder roller in a second direction such that the first pulp sheet of the first infeed path is removed from the mill head, and feeding the second pulp sheet of the second infeed path to the mill head by rotating the feeder roller in the second direction.
Dependencies are inferred from the claim text.