Resilient creaser
First Claim
1. In a paper interfolding machine of the type having first and second folding rolls mounted adjacent each other for rotation about parallel axes with porous tissue paper carried by each of said rolls and a wedge-shaped protrusion on said first folding roll and a mating recess on said second folding roll for receiving said protrusion in a nip between said rolls, the improvement in combination therewith comprising:
- (i) a resilient member filling at least a portion of said mating recess and forming an elastic anvil within said recess wherein said protrusion deforms said resilient member when said protrusion is received in said recess and creases a sheet of said paper received in the nip between said rolls by the action of said protrusion on said anvil, and(ii) vacuum port means on said second folding roll for selectively adhering said sheet to said second roll during said creasing.
1 Assignment
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Accused Products
Abstract
This invention relates to a paper interfolding machine of the type having first and second folding rolls mounted adjacent each other for rotation about parallel axes with porous tissue paper carried by each roll. A wedge-shaped protrusion on a first folding roll and a mating recess on a second folding roll is provided. A resilient member filling at least a portion of the mating recess forms an elastic anvil which is deformed by the protrusion received in the recess to crease a sheet of paper received in the nip between the rolls. Vacuum ports on the second folding roll are used to selectively adhere the sheet to the second roll during creasing.
56 Citations
6 Claims
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1. In a paper interfolding machine of the type having first and second folding rolls mounted adjacent each other for rotation about parallel axes with porous tissue paper carried by each of said rolls and a wedge-shaped protrusion on said first folding roll and a mating recess on said second folding roll for receiving said protrusion in a nip between said rolls, the improvement in combination therewith comprising:
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(i) a resilient member filling at least a portion of said mating recess and forming an elastic anvil within said recess wherein said protrusion deforms said resilient member when said protrusion is received in said recess and creases a sheet of said paper received in the nip between said rolls by the action of said protrusion on said anvil, and (ii) vacuum port means on said second folding roll for selectively adhering said sheet to said second roll during said creasing. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification