The Procter Gamble Company

Sudhanshu Gupta

Gueltekin Erdem

Joseph Hung Lam

Walter Pieter Hendrik Laurentius Van Der Klugt

Nadezhda Kurbatova

Bruno Johannes Ehrnsperger

Holger Beruda

Walter Klugt

The present disclosure provides methods of winding substrates comprising three-dimensional features about a core to form a spool so that at least a majority of the three-dimensional features in one wrap of a lane of the spool are at least partially nested with a majority of the three-dimensional features in another adjacent wrap in the same lane of the spool. By at least partially nesting these three-dimensional features in adjacent wraps of a lane of the spool, the three-dimensional features may be at least mostly maintained in the substrates without significant compression during winding and storage of the spool.

Methods of winding substrates having three-dimensional features

A spool comprises a three-dimensional substrate and a core. The three-dimensional substrate comprises a plurality of projections extending outwardly from a plane of the substrate. The spool comprises a first plurality of spirally wound portions and a first plurality of helically wound portions. The substrate is spirally wound around the core to form each spirally wound portion of the first plurality of spirally wound portions. The spirally wound portions of the first plurality of spirally wound portions are located next to each other along a longitudinal axis of the core between a first transversal side edge of the core and a second transversal side edge of the core. The substrate is helically wound around the core along the longitudinal axis of the core to form each helically wound portion. Each helically wound portion extends between two adjacent spirally wound portions of the first plurality of spirally wound portions.

Spool of a three-dimensional substrate

The present invention relates to apparatus and methods for winding and unwinding web materials, the web materials having a plurality of narrow lanes which form a spool. In a first aspect of the invention each lane of web material is defined by a width measured in the axial direction of the spool and between a minimum and a maximum radial height measured radially from a central axis of the spool. Each lane is wound, in turn, with web material up to the maximum radial height, the web material is folded by a first, second, third and fourth folds so that the web material is realigned parallel to the adjacent lane and wound to form the adjacent lane.

Apparatus and method for winding and unwinding web material

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Euskirchen, Germany

Sudhanshu Gupta