A method of making a fibrous sheet. The method includes forming a nascent web from an aqueous solution of papermaking fibers, dewatering the nascent web to form a dewatered web having a consistency from about ten percent solids to about seventy percent solids, moving the dewatered web on a transfer surface, and transferring the dewatered web from the transfer surface to a molding roll at a molding zone. The molding roll includes an exterior and a patterned surface on the exterior of the molding roll. Papermaking fibers of the dewatered web are redistributed on the patterned surface in order to form a molded paper web. The method also includes transferring the molded paper web to a drying section and drying the molded paper web in the drying section to form a fibrous sheet.

A method for treating a pulp web in a paper or tissue machine with an extended-nip press unit. This extended-nip press unit includes a shoe press roll with a revolving press belt and a backing roll, where the pulp web is dewatered in the extended press nip between the backing roll and the press belt and where the pulp web is carried on the revolving press belt of the press roll after the extended press nip to a transfer fabric that receives the pulp web. The transfer fabric is guided over a stationary transfer device in the transfer area. A corresponding device for treating the pulp web.

Provided is a sheet manufacturing apparatus capable of desirably adjusting the thickness of the sheet, and forming sheets with highly uniform thickness or grammage. A sheet manufacturing apparatus configured to make a sheet from defibrated material of defibrated paper includes: a drum unit having a cylinder with a defibrated material storage space inside and multiple openings through which the defibrated material passes formed in the outside of the cylinder; an accumulator configured to accumulate the defibrated material that past the openings, forming a deposit; and a housing configured to enclose the drum unit and the accumulator, the housing having a vent through which air passes between the drum unit and the accumulator.

Provided is a sheet manufacturing apparatus capable of desirably adjusting the thickness of the sheet, and forming sheets with highly uniform thickness or grammage. A sheet manufacturing apparatus configured to make a sheet from defibrated material of defibrated paper includes: a drum unit having a cylinder with a defibrated material storage space inside and multiple openings through which the defibrated material passes formed in the outside of the cylinder; an accumulator configured to accumulate the defibrated material that past the openings, forming a deposit; and a housing configured to enclose the drum unit and the accumulator, the housing having a vent through which air passes between the drum unit and the accumulator.

Provided is technology enabling appropriately maintaining or adjusting the thickness of accumulated fiber when accumulating and processing fiber. A sheet manufacturing apparatus 100 has a distributor 60 that distributes a mixture MX containing fiber; a second web former 70 that forms a second web W2; a mesh belt 72 that conveys the second web W2 in a conveyance direction F1; a roller unit 650 that compresses the second web W2; a measurement device 400 that measures the distribution of the thickness of the second web W2 in a second direction intersecting the conveyance direction F1 while the second web W2 is being compressed by the roller unit 650, or after the second web W2 is compressed by the roller unit 650; and a controller 110 that compares a measurement from the measurement device 400 with a set thickness distribution, and controls the thickness distribution of the second web W2.

Provided is technology enabling appropriately maintaining or adjusting the thickness of accumulated fiber when accumulating and processing fiber. A sheet manufacturing apparatus 100 has a distributor 60 that distributes a mixture MX containing fiber; a second web former 70 that forms a second web W2; a mesh belt 72 that conveys the second web W2 in a conveyance direction F1; a roller unit 650 that compresses the second web W2; a measurement device 400 that measures the distribution of the thickness of the second web W2 in a second direction intersecting the conveyance direction F1 while the second web W2 is being compressed by the roller unit 650, or after the second web W2 is compressed by the roller unit 650; and a controller 110 that compares a measurement from the measurement device 400 with a set thickness distribution, and controls the thickness distribution of the second web W2.

The disclosure provides tissue webs and products comprising cross-linked cellulosic fibers. In certain embodiments cross-linked cellulosic fibers are selectively disposed in one or more layers of a multi-layered tissue, wherein the tissue layer comprising cross-linked fibers is adjacent to a layer which is substantially free from cross-linked fiber. The cross-linked fibers may include hardwood kraft fibers reacted with a cross-linking agent selected from the group consisting of DMDHU, DMDHEU, DMU, DHEU, DMEU, and DMeDHEU. Tissue products and webs produced in this manner generally have improved sheet bulk, without losses in strength, compared to similar tissue products produced without cross-linked cellulosic fibers. As such the tissue products of the present invention generally have a basis weight from about 10 to about 50 gsm, a sheet bulk greater from about 8.0 to about 12.0 cc/g and geometric mean tensile from about 730 to about 1,500 g/3.

The disclosure provides tissue webs and products comprising cross-linked cellulosic fibers. In certain embodiments cross-linked cellulosic fibers are selectively disposed in one or more layers of a multi-layered tissue, wherein the tissue layer comprising cross-linked fibers is adjacent to a layer which is substantially free from cross-linked fiber. The cross-linked fibers may include hardwood kraft fibers reacted with a cross-linking agent selected from the group consisting of DMDHU, DMDHEU, DMU, DHEU, DMEU, and DMeDHEU. Tissue products and webs produced in this manner generally have improved sheet bulk, without losses in strength, compared to similar tissue products produced without cross-linked cellulosic fibers. As such the tissue products of the present invention generally have a basis weight from about 10 to about 50 gsm, a sheet bulk greater from about 8.0 to about 12.0 cc/g and geometric mean tensile from about 730 to about 1,500 g/3.

The present invention relates to a transfer device applied to a robotic arm and a production line for pulp molding, which solves the problems of lower production efficiency and the like in the prior art. The transfer device applied to a robotic arm for pulp molding includes a wet blank transfer mold provided with a closed air chamber therein, a front surface of the wet blank transfer mold is provided with at least one inward concave matching cavity capable of being sleeved outside a pulp wet blank container and recessed toward the closed air chamber side, the inward concave matching cavity is matched with the pulp wet blank container, an inner wall of each inward concave matching cavity and a bottom of the inward concave matching cavity are respectively provided with a plurality of small communicating holes for communicating the inward concave matching cavity with the closed air chamber, a back surface of the wet blank transfer mold is connected with a moving frame parallel to the wet blank transfer mold through a guide mechanism, and a driver is connected between the back surface of the wet blank transfer mold and the moving frame. The present invention has the advantage of improving the production efficiency.

The present invention relates to a transfer device applied to a robotic arm and a production line for pulp molding, which solves the problems of lower production efficiency and the like in the prior art. The transfer device applied to a robotic arm for pulp molding includes a wet blank transfer mold provided with a closed air chamber therein, a front surface of the wet blank transfer mold is provided with at least one inward concave matching cavity capable of being sleeved outside a pulp wet blank container and recessed toward the closed air chamber side, the inward concave matching cavity is matched with the pulp wet blank container, an inner wall of each inward concave matching cavity and a bottom of the inward concave matching cavity are respectively provided with a plurality of small communicating holes for communicating the inward concave matching cavity with the closed air chamber, a back surface of the wet blank transfer mold is connected with a moving frame parallel to the wet blank transfer mold through a guide mechanism, and a driver is connected between the back surface of the wet blank transfer mold and the moving frame. The present invention has the advantage of improving the production efficiency.