A roll for molding a fibrous sheet. The roll includes a cylindrical shell and a vacuum box. The cylindrical shell is configured to be rotatably driven and is permeable to allow air to be moved through the cylindrical shell. The cylindrical shell has a permeable patterned surface on an exterior surface of the cylindrical shell. The permeable patterned surface has at least one of a plurality of recesses and a plurality of projections. The density of the at least one of the plurality of recesses and the plurality of projections is greater than about fifty per square inch. The vacuum box is positioned on the inside of the cylindrical shell and is configured to draw air from the exterior surface of the cylindrical shell to an interior surface of the cylindrical shell. The vacuum box is stationary with respect to the rotation of the cylindrical shell.

A roll for molding a fibrous sheet. The roll includes a cylindrical shell and a vacuum box. The cylindrical shell is configured to be rotatably driven and is permeable to allow air to be moved through the cylindrical shell. The cylindrical shell has a permeable patterned surface on an exterior surface of the cylindrical shell. The permeable patterned surface has at least one of a plurality of recesses and a plurality of projections. The density of the at least one of the plurality of recesses and the plurality of projections is greater than about fifty per square inch. The vacuum box is positioned on the inside of the cylindrical shell and is configured to draw air from the exterior surface of the cylindrical shell to an interior surface of the cylindrical shell. The vacuum box is stationary with respect to the rotation of the cylindrical shell.

A method of making a fibrous sheet. The method includes forming a nascent web from an aqueous solution of paper-making fibers, moving a dewatered web on a transfer surface, and applying a vacuum at a molding zone defined between the transfer surface and a molding roll. The molding roll includes a permeable patterned surface on an exterior of the molding roll. The method also includes transferring the dewatered web from the transfer surface to the permeable patterned surface at the molding zone. The vacuum is applied during the transferring of the dewatered web, and the papermaking fibers of the dewatered web are (i) redistributed on the permeable patterned surface and (ii) drawn into a plurality of recess of the permeable patterned surface, in order to form a molded paper web. The method further includes drying the molded paper web in a drying section to form a fibrous sheet.

A method of making a fibrous sheet. The method includes forming a nascent web from an aqueous solution of paper-making fibers, moving a dewatered web on a transfer surface, and applying a vacuum at a molding zone defined between the transfer surface and a molding roll. The molding roll includes a permeable patterned surface on an exterior of the molding roll. The method also includes transferring the dewatered web from the transfer surface to the permeable patterned surface at the molding zone. The vacuum is applied during the transferring of the dewatered web, and the papermaking fibers of the dewatered web are (i) redistributed on the permeable patterned surface and (ii) drawn into a plurality of recess of the permeable patterned surface, in order to form a molded paper web. The method further includes drying the molded paper web in a drying section to form a fibrous sheet.

The present invention relates to a method for measuring the diameter and/or the geometry of the diameter of a cylindrical object. The cylindrical object has a longitudinal axis and a cylindrical shell. The method comprises measuring in a contactless manner at a specific point in the direction of the longitudinal axis the momentary circumferential velocity of the cylindrical shell at specific time or the distance which the circumference of the cylindrical shell rotates, measuring revolutions of the cylindrical shell or the angle of rotation of the cylindrical shell simultaneously with the measuring of the momentary circumferential velocity at specific time or the distance which the circumference of the cylindrical shell rotates, and calculating the diameter of the cylindrical shell and/or the geometry of the diameter of the cylindrical shell at the specific point in the direction of the longitudinal axis. The present invention also relates to a measurement system for measuring the diameter and/or the geometry of the diameter of a cylindrical object and the use of the measurement system.

The present invention relates to a method for measuring the diameter and/or the geometry of the diameter of a cylindrical object. The cylindrical object has a longitudinal axis and a cylindrical shell. The method comprises measuring in a contactless manner at a specific point in the direction of the longitudinal axis the momentary circumferential velocity of the cylindrical shell at specific time or the distance which the circumference of the cylindrical shell rotates, measuring revolutions of the cylindrical shell or the angle of rotation of the cylindrical shell simultaneously with the measuring of the momentary circumferential velocity at specific time or the distance which the circumference of the cylindrical shell rotates, and calculating the diameter of the cylindrical shell and/or the geometry of the diameter of the cylindrical shell at the specific point in the direction of the longitudinal axis. The present invention also relates to a measurement system for measuring the diameter and/or the geometry of the diameter of a cylindrical object and the use of the measurement system.

A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color, and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.

A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color, and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.

A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color; and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.

A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color; and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.