Cores for compressed core wound paper products
AssigneeThe Procter & Gamble Company
InventorJay K. Sato
Life of this patent
Estimating the term…
Abstract
A core for compressed core wound paper products such as toilet tissue and paper toweling is disclosed. The core is selectively cut and scored to form folding tab portions that fold radially inward when the core is in a generally flattened configuration. Upon rerounding of the core to a generally cylindrical configuration, the folding tab portions can be unfolded to form circular arcs conforming to the core inner and outer surfaces. The folding tab portions enable the core to reround to a generally cylindrical configuration that resists reflattening.
Claims18
A core about which a paper product may be wound, the core being deformable from a generally cylindrical configuration to a generally flattened configuration, the core comprising:
- an inner surface and an outer surface separated by a core wall having a finite thickness;
- first and second longitudinally spaced apart core ends defining a longitudinal core axis and a core length;
- at least one folding tab portion for selectively weakening the core disposed at a given circumferential position and having an aggregate longitudinal length less than the core length, each folding tab portion being foldable to extend radially inward of the core surfaces when the core is in the generally flattened configuration, each folding tab portion being generally conformable to the core inner and outer surfaces when the core is in the generally cylindrical configuration, each folding tab portion comprising:
- longitudinally spaced apart first and second free edges, at least one of the free edges spaced from the core ends;
- a first selectively weakened attachment to the core extending intermediate the first and second free edges;
- and
- a second selectively weakened attachment to the core circumferentially spaced from the first selectively weakened attachment and extending intermediate the first and second free edges.
A core about which a paper product may be wound, the core being deformable from a generally cylindrical configuration to a generally flattened configuration, the core comprising:
- an inner surface and an outer surface separated by a core wall having a finite thickness;
- first and second longitudinally spaced apart core ends defining a longitudinal core axis and a core length;
- at least one folding tab portion for selectively weakening the core disposed at a given circumferential location and having an aggregate longitudinal length less than the core length, each folding tab portion being foldable to extend radially inward of the core surfaces when the core is in the generally flattened configuration, each folding tab portion being generally conformable to the core inner and outer surfaces when the core is in the generally cylindrical configuration, each folding tab portion comprising:
- longitudinally spaced apart first and second free edges formed by circumferentially oriented cuts through the core, the first and second free edges spaced longitudinally inward from the core ends;
- a first selectively weakened attachment to the core extending intermediate the first and second edges;
- a second selectively weakened attachment to the core circumferentially spaced from the first selectively weakened attachment and extending intermediate the first and second free edges;
- and
- a folding hinge intermediate the first and second selectively weakened attachments to the core and extending intermediate the first and second free edges.
Dependencies are inferred from the claim text.