Abstract: The invention relates to a method for producing an absorbent fiber product, starting with a parent fiber product that comprises fibers that, on the one hand, lie at a statistical distance from one another and, on the other hand, make contact with one another at contact points. The method comprises treating the parent fiber product with a fluid medium in such a way that the fibers are at least partially wetted and the fluid medium is then rapidly evaporated by irradiation, so that the evaporation pressure generated by the evaporating fluid medium has a kinematic effect on the fibers, which increases the distance between them. In this way the risk of inadvertent, in particular, thermal damage to the fibers is eliminated. Furthermore, the intrinsic fiber structure is left unaffected, or is only affected in a controlled manner. This prevents the uncontrolled destruction of the fiber structure and a detrimental effect on the fiber product, for example, to its tear resistance when wet.

Abstract: The invention describes a method for production of a three-dimensional structured surface with haptically and/or optically detectable microstructures, in which the microstructures are fixed as a dataset, with the steps: a) preparation of at least a virtual or real elastic film; b) determination of the elongations and compressions produced in the elastic film in the shaping process of the structured surface; c) modification of the datasets so that the elongations and compressions are at least partially compensated; d) checking of an elastic film structured with the modified dataset for distortions in the microstructures; e) if necessary, repetition of steps b) to d), until a final dataset is obtained; and f) structuring of the elastic film, so that at least a structure-supporting surface is produced on the film.

Abstract: The invention describes a method for production of a three-dimensional structured surface with haptically and/or optically detectable microstructures, in which the microstructures are fixed as a dataset, with the steps: a) preparation of at least a virtual or real elastic film; b) determination of the elongations and compressions produced in the elastic film in the shaping process of the structured surface; c) modification of the datasets so that the elongations and compressions are at least partially compensated; d) checking of an elastic film structured with the modified dataset for distortions in the microstructures; e) if necessary, repetition of steps b) to d), until a final dataset is obtained; and f) structuring of the elastic film, so that at least a structure-supporting surface is produced on the film.

Abstract: The invention relates to a method for producing an absorbent fiber product, starting with a parent fiber product that comprises fibers that, on the one hand, lie at a statistical distance from one another and, on the other hand, make contact with one another at contact points. The method comprises treating the parent fiber product with a fluid medium in such a way that the fibers are at least partially wetted and the fluid medium is then rapidly evaporated by irradiation, so that the evaporation pressure generated by the evaporating fluid medium has a kinematic effect on the fibers, which increases the distance between them. In this way the risk of inadvertent, in particular, thermal damage to the fibers is eliminated. Furthermore, the intrinsic fiber structure is left unaffected, or is only affected in a controlled manner. This prevents the uncontrolled destruction of the fiber structure and a detrimental effect on the fiber product, for example, to its tear resistance when wet.

Abstract: A roller arrangement for embossing web-shaped materials, in particular, web-shaped paper and tissue materials, is disclosed. A roller arrangement comprises a punch, which includes a first embossing pattern, containing a plurality of spaced-apart elevations, and a matrix which includes a second embossing pattern, containing a plurality of spaced-apart elevations. The elevations on the first embossing pattern can be lowered into free spaces in between elevations of the second embossing pattern. Elevations on embossing patterns on punches and matrixes are positioned in rows spaced apart in a circumferential direction. At least one cleaning roller is provided, which comprises cleaning elements arranged in a circumferential direction that interact with a punch or a matrix in between rows of elevations on embossing patterns of punches and matrixes.

Abstract: An expandable layer made of compressible material placed in a rotary printing from between a core cylinder and a sleeve. An embodiment includes depressions on the outer circumferential surface and/or the inner circumferential surface of the expandable layer. The depressions can be, at least partly, fashioned as open circumferential annular channels. In addition, at least some of the depressions and annular channels can be arranged according to a required bending compensation of the sleeve. In another embodiment, an initial section of the depressions stretches in an axial direction on the expandable layer and a subsequent section of the depressions stretches in a radial direction over the expandable layer, whereby a part of the material of the expandable layer can be displaced in the depressions and at least a portion of the depressions is arranged according to a required bending compensation of the sleeve.