Disclosed is a press fabric and related method to impart a texture to a cellulose product by having macro-voids in a complementary pattern on a sheet-contact side surface of the press fabric.

A method for producing a paper machine clothing includes the following steps: a) providing a film-like substrate having an upper face and a lower face opposite the upper face; b) forming a pattern of holes in the substrate by boring a multiplicity of holes, which connect the upper face to the lower face, into the substrate by way of at least one laser light source. A bore hole strategy is applied which ensures that, in temporal sequence between the forming of a first hole and an immediately adjacent second hole in the pattern of holes, at least one further hole of the pattern of holes is formed in the substrate which is not immediately adjacent either the first hole or the second hole in the pattern of holes.

A papermaking belt including zones of material laid down successively using a 3D printing process. The zones include at least a pocket zone configured to form three dimensional structures in a paper web by applying vacuum to pull the paper web against the pocket zone. In at least one exemplary embodiment, the zone also include at least one vacuum breaking zone configured to limit an amount of paper fibers pulled through the pocket zone by the applied vacuum.

A method for producing a paper machine clothing includes the following steps: a) providing a film-like substrate having an upper face and a lower face opposite the upper face; b) forming a pattern of holes in the substrate by boring a multiplicity of holes, which connect the upper face to the lower face, into the substrate by way of at least one laser light source. A bore hole strategy is applied which ensures that, in temporal sequence between the forming of a first hole and an immediately adjacent second hole in the pattern of holes, at least one further hole of the pattern of holes is formed in the substrate which is not immediately adjacent either the first hole or the second hole in the pattern of holes.

A clothing for a machine for producing a fibrous web, more particularly a paper or cardboard web, is substantially formed from a film-shaped material having a first surface facing the fibrous web and a second surface facing away from the fibrous web. The clothing includes a plurality of through openings each extending along a central axis from the first surface to the second surface. The central axes of at least some of the through openings in the covering enclose an angle with the first surface which differs from 90°. A machine for producing a fibrous web, more particularly a paper or cardboard web, includes the clothing. A method for producing the clothing includes making the through openings in the film-shaped material by using a laser.

Clothing is provided for a machine for producing a fibrous web, in particular a paper, board or tissue web. The clothing has a substrate. The substrate has a top side, an underside, two side edges and a useful region between the two side edges. The useful region has a plurality of through-channels, which connect the top side to the underside of the substrate. An inner surface of at least one through-channel, preferably of the majority of all the through-channels, more preferably of all the through-channels in the useful region of the substrate, has a mean roughness depth that is greater than 4 μm, preferably greater than 6 μm, more preferably greater than 8 μm. The clothing of this type is produced using a laser.

A substrate of a paper machine clothing has a usable region formed with through-channels that are non-cylindrical with a cross-sectional area becoming smaller from an upper side to a middle region of the substrate. An upper rim of at least one of the through-channels directly contacts an upper rim of at least one neighboring through-channel and the upper rims have common local maximum. A sectional plane parallel to the thickness direction of the substrate defines an intersecting line with a sidewall of a neighboring through-channel. The intersecting line has a convexly shaped first portion, a concavely shaped second portion, and a third portion that is again convexly shaped going from the at least one common local maximum toward the middle region of the substrate. There is also described a method of producing such a paper machine clothing.

A paper machine clothing has a substrate with an upper side, a lower side, two lateral edges and a usable region between the two lateral edges. The usable region is formed with a plurality of through-channels extending through the substrate and connecting the upper side with the lower side. The through-channels are non-cylindrical with a cross sectional area becoming smaller when going in a thickness direction of the substrate from the upper side to a middle region of the substrate between the upper side and the lower side, wherein a shape of the cross sectional area of at least one through-channel, preferably of all through-channels, of the plurality of through-channels changes proceeding in the thickness direction of the substrate from the upper side to the lower side.

A structure for use in industrial fabrics such as paper machine clothing and engineered fabrics. The structure is a bicomponent extruded elastomeric netting or mesh having a high degree of both compressibility under an applied normal load and excellent recovery (resiliency or spring back) upon removal of that load.

A method for producing a base structure of a clothing for use in a machine producing and/or processing a fiber web. The clothing base structure is a laminate formed of at least two layers and the layers are formed substantially from polymer material. The method includes the following steps: locally melting the polymer material of the two layers by the action of radiation from a radiation source and pressing the polymer material of the two layers onto each other. The polymer material of the two layers is thereby guided into a press nip formed by two press rolls, forming an inlet gap, and the radiation is directed into the inlet gap.