A conveying device includes a blower and a conveyor. The blower blows air to a sheet material. The conveyor conveys the sheet material through a blowing region of the blower. The conveyor includes a surface movable member and a presser. The surface movable member conveys the sheet material with movement of a surface of the surface movable member, with a back side of the sheet material supported with the surface movable member. The presser presses at least a portion of a leading end of the sheet material toward the surface movable member in at least an area from a position upstream from the blowing region in a conveyance direction of the sheet material to a position in the blowing region of the blower.

Method for preparing a membrane from fibril cellulose includes supplying fibril cellulose dispersion on a filter layer, draining liquid from a fibril cellulose dispersion by the effect of reduced pressure through the filter layer that is impermeable to fibrils of the fibril cellulose but permeable to the liquid to form a membrane sheet on the filter fabric, applying heat on the opposite side of the membrane sheet to the membrane sheet while continuing draining of the liquid through the filter layer by pressure difference over the filter layer, and removing the membrane sheet from the filter layer as a freestanding membrane.

Method for preparing a membrane from fibril cellulose includes supplying fibril cellulose dispersion on a filter layer, draining liquid from a fibril cellulose dispersion by the effect of reduced pressure through the filter layer that is impermeable to fibrils of the fibril cellulose but permeable to the liquid to form a membrane sheet on the filter fabric, applying heat on the opposite side of the membrane sheet to the membrane sheet while continuing draining of the liquid through the filter layer by pressure difference over the filter layer, and removing the membrane sheet from the filter layer as a freestanding membrane.

The present disclosure relates to methods and apparatuses for removing water from a wet fibrous web. During the process of making a fibrous structure, a capillary dewatering apparatus remove water from a wet porous web. In some configurations, a capillary dewatering apparatus may include a capillary porous media. A molding member, such as a papermaking belt comprising an air permeable fabric, may advance the wet fibrous web onto the capillary porous media, wherein the fibrous web is positioned between the capillary porous media and the air-permeable fabric. An energy transfer surface may be positioned in contact with the air-permeable fabric or the outer circumferential surface, wherein the energy transfer surface operates to vibrate the capillary porous media. In turn, the vibration helps to drive water through the capillary porous media, allowing additional water to flow from the fibrous web and through pores in the capillary porous media.

The present disclosure relates to methods and apparatuses for removing water from a wet fibrous web. During the process of making a fibrous structure, a capillary dewatering apparatus remove water from a wet porous web. In some configurations, a capillary dewatering apparatus may include a capillary porous media. A molding member, such as a papermaking belt comprising an air permeable fabric, may advance the wet fibrous web onto the capillary porous media, wherein the fibrous web is positioned between the capillary porous media and the air-permeable fabric. An energy transfer surface may be positioned in contact with the air-permeable fabric or the outer circumferential surface, wherein the energy transfer surface operates to vibrate the capillary porous media. In turn, the vibration helps to drive water through the capillary porous media, allowing additional water to flow from the fibrous web and through pores in the capillary porous media.

Method and apparatus for dehydration of veneer sheet having therein a knot are disclosed. Veneer dehydration apparatus includes a first stationary single dehydrating roller and a plurality of second movable sectional dehydrating rollers, which rollers are disposed one above the other so that a nip through which a veneer sheet for dehydration is moved is formed between the first and second rollers. A stop device determines the initial position of each second roller relative to the first roller where a predetermined spaced distance is formed between the first and the second rollers. An urging device yieldably urges each second roller to the initial position. The second roller is movable away from the initial position against the urging force of the urging device independently of the other second rollers by a knot present in the veneer sheet and just moving through the nip between the second roller and the first roller.

Method and apparatus for dehydration of veneer sheet having therein a knot are disclosed. Veneer dehydration apparatus includes a first stationary single dehydrating roller and a plurality of second movable sectional dehydrating rollers, which rollers are disposed one above the other so that a nip through which a veneer sheet for dehydration is moved is formed between the first and second rollers. A stop device determines the initial position of each second roller relative to the first roller where a predetermined spaced distance is formed between the first and the second rollers. An urging device yieldably urges each second roller to the initial position. The second roller is movable away from the initial position against the urging force of the urging device independently of the other second rollers by a knot present in the veneer sheet and just moving through the nip between the second roller and the first roller.

A conveying device includes a blower and a conveyor. The blower blows air to a sheet material. The conveyor conveys the sheet material through a blowing region of the blower. The conveyor includes a surface movable member and a presser. The surface movable member conveys the sheet material with movement of a surface of the surface movable member, with a back side of the sheet material supported with the surface movable member. The presser presses at least a portion of a leading end of the sheet material toward the surface movable member in at least an area from a position upstream from the blowing region in a conveyance direction of the sheet material to a position in the blowing region of the blower.

A conveying device includes a blower and a conveyor. The blower blows air to a sheet material. The conveyor conveys the sheet material through a blowing region of the blower. The conveyor includes a surface movable member and a presser. The surface movable member conveys the sheet material with movement of a surface of the surface movable member, with a back side of the sheet material supported with the surface movable member. The presser presses at least a portion of a leading end of the sheet material toward the surface movable member in at least an area from a position upstream from the blowing region in a conveyance direction of the sheet material to a position in the blowing region of the blower.

The present disclosure relates to methods and apparatuses for removing water from a wet fibrous web. During the process of making a fibrous structure, a capillary dewatering apparatus remove water from a wet porous web. In some configurations, a capillary dewatering apparatus may include a capillary porous media. A molding member, such as a papermaking belt comprising an air permeable fabric, may advance the wet fibrous web onto the capillary porous media, wherein the fibrous web is positioned between the capillary porous media and the air-permeable fabric. An energy transfer surface may be positioned in contact with the air-permeable fabric or the outer circumferential surface, wherein the energy transfer surface operates to vibrate the capillary porous media. In turn, the vibration helps to drive water through the capillary porous media, allowing additional water to flow from the fibrous web and through pores in the capillary porous media.