3D embossing
AssigneeSCA Hygiene Products AB
InventorsJurgen Sauter, Philippe Albouze
Life of this patent
Estimating the term…
Abstract
An embossing roll for producing fibrous products, has a structurized embossing surface suitable to run against an anvil roll. The structurized embossing surface includes male protrusions or female depressions starting from a base circumferential surface of the roll. The embossing pattern includes the following features: the base areas of selected male protrusions or female depressions in the base circumferential surface are different; the heights or depths of selected male protrusions or selected female depressions in a radial direction of the roll and starting from the base circumferential surface are different; and the angles between sidewall sections and the adjacent base circumferential surface of selected male protrusions and/or female depressions are different.
Claims12
An embossing roll for producing fibrous products, comprising:
- a structurized embossing surface suitable to run against an anvil roll, the structurized embossing surface comprising male protrusions or female depressions starting from a base circumferential surface of the embossing roll;
- the structurized embossing surface having the following features:
- base areas of a plurality of male protrusions or a plurality of female depressions in the base circumferential surface are different;
- heights or depths of the plurality of male protrusions or the plurality of female depressions in a radial direction of the embossing roll and starting from the base circumferential surface are different;
- angles between sidewall sections of the plurality of male protrusions and/or female depressions and the base circumferential surface are different;
- at least one male protrusion or female depression has sidewall sections with at least two different slope angles between the sidewall sections and the base circumferential surface, the slope angles defining a concave surface that curves inward toward the base circumferential surface;
- and
- the angles between sidewall sections of male protrusions or female depressions and a direction normal to the base circumferential surface exceed 30°.
An embossing roll for producing fibrous products, comprising:
- a structurized embossing surface suitable to run against an anvil roll, the structurized embossing surface comprising male protrusions or female depressions starting from a base circumferential surface of the embossing roll;
- the structurized embossing surface having the following features:
- base areas of a plurality of male protrusions or a plurality of female depressions in the base circumferential surface are different;
- heights or depths of the plurality of male protrusions or the plurality of female depressions in a radial direction of the embossing roll and starting from the base circumferential surface are different;
- angles between sidewall sections of the plurality of male protrusions and/or female depressions and the base circumferential surface are different;
- at least one male protrusion or female depression has sidewall sections with at least two different slope angles between the sidewall sections and the base circumferential surface;
- and
- the angles between sidewall sections of male protrusions or female depressions and a direction normal to the base circumferential surface exceed 30°,
- wherein a local surface of at least one female depression is curved such that two orthogonal directions starting from positions on the local surface can be defined, the two orthogonal directions crossing the base circumferential surface at angles β1, β2 satisfying the equation 30°<|β1−β2|<90°.
Dependencies are inferred from the claim text.