Abstract: In a sheet manufacturing apparatus which includes an installation unit on which a container that stores a powder is installed and which manufactures sheets including the powder and fibers, the installation unit includes an inlet for receiving the powder from the container, and a first shutter for opening and closing the inlet, the first shutter is capable of moving between an open position at which the inlet is opened and a closed position at which the inlet is closed in accordance with attachment and detachment of the container with respect to the installation unit, and the first shutter is provided with a plurality of shutter members and, at the open position, the plurality of shutter members are stored overlapping one another.

Abstract: A device for manufacturing a tray of cellulose material, includes: a compression mold including an essentially flat bottom end and surrounding sides for compression molding and drying of cellulose pulp to a finished tray; a male mold arranged to fit into the compression mold and that includes a bottom space and lateral surfaces corresponding to the compression mold, wherein the compression mold and the male mold between themselves delimit a mold space including a base section and a side section for compression molding of the cellulose pulp. Both the compression mold and the male mold are provided with blow and suction devices for blowing in and suction of fluid in and out of the mold space. The blow and suction devices include an inlet pipe having an inlet valve, coupled to an inlet chamber in connection with the mold space, and an outlet pipe having an outlet valve separated from the inlet pipe and coupled to an outlet chamber in connection with the mold space.

Abstract: A method of forming a moulded and printed product from pulp material including the steps of: forming a pre-form mould to have one or more planar surfaces, compound conjoined planar surfaces and/or two dimensional curved surfaces; transferring an amount of pulp slurry material to the pre-form mould; forming a moulded pre-form from the transferred pulp slurry material; applying printing to the planar and/or dimensional curved surfaces in a pre-distorted configuration; and moulding the printed pre-form to a different final shape whereby the printed surfaces retain the printing without running and the printing conforms to a desired post distortion configuration.

Abstract: A method of producing a fiber molded article using a pressing mold, includes inserting a first split and a second split into a slurry tank such that a fiber layer is formed on the first split and a fiber layer is formed on the second split, placing the pressing mold, which includes a solid elastic member and an inflatable elastic member configured to be inflated, onto the fiber layer on the first split, joining the first split and the second split such that a fiber molded article is formed from the fiber layer on the first split and the fiber layer on the second split, and dewatering and shaping the fiber molded article by pressing the fiber molded article by the solid elastic pressing member and the inflatable elastic pressing member.

Abstract: A pulp molded article (1) of the present invention comprises a neck portion (2) and a thread (5) provided on the outer surface of the neck portion (2), and has an overrun torque of 1 N·m or higher between the neck portion and a threaded cap screwed on the neck portion (2).

Abstract: A molded body formed with pulp mold having projected lines corresponding to a slit-shaped vent package part, capable of being provided by paper-making/dewatering, using a paper making mold, a slurry having fibers dispersed in a liquid so as to obtain a three-dimensional fiber wetted laminated body, moving the laminated body to a dry mold having an inner surface with the slit-shaped vent package, and pressing and drying that laminated body.

Abstract: Disclosed is a method of producing a fiber-molded hollow article by using a papermaking mold (2) composed of splits (21, 22) which are joined to form a cavity (20) having two openings (20a, 20b) connecting with the outside and an expandable pressing member (3) adapted to be placed in the cavity (20). The method comprises the steps of immersing each of the splits (21, 22) before being joined in a fiber slurry to form a fiber preform (10a, 10b), joining the splits (21, 22) each having the fiber preform (10a, 10b) formed thereon while placing the pressing member (3) in the cavity (20), and molding and dewatering a molded article (1) in the papermaking mold (2).

Abstract: A method of producing a pulp molded article. The method feeds a pulp slurry to a cavity of a papermaking mold having a prescribed cavity shape to form a pulp preform including a main part having an opening and a separable part having a flange and connected to an edge of the opening. A pressing member is inserted into the preform, the pressing member is expanded to press the preform toward the papermaking surface, the preform is removed from the papermaking mold, and then the preform is cut at a joint between the separable part and the main part.

Abstract: A method for producing a pulp molded article is disclosed. The method comprises the steps of forming and drying a pulp molded precursor (15). The drying step includes a first step and a second step. In the first step, the precursor (15) is set in a cavity of a heating mold, and is hot-pressed. The cavity has a configuration in conformity to the contour of the pulp molded article to be produced. In the second step, the hot-pressed precursor (15) is taken out from the heating mold and is heat-dried in a drying furnace.

Abstract: A method of producing a pulp molded article comprising the steps of assembling splits (10, 11) each having a suction passageway and a papermaking screen (5) into a papermaking mold (1), filling the cavity of the papermaking mold (1) with a pulp slurry, discharging the liquid component of the pulp slurry through the suction passageway to deposit pulp fiber on the inner side of the papermaking screen (5) into an undried wet molded article, and dewatering the undried molded article deposited on the inner side of the papermaking screen (5), wherein the splits (10, 11) each have a large number of flow passageways (2) for feeding a purging fluid for cleaning the papermaking screen (5), and the purging fluid is ejected from the outer side of the papermaking screen (5) toward the cavity through the flow passageways (2) during the filling with the pulp slurry.

Abstract: A method for producing a pulp molded article (7) comprising the steps of supplying a pulp slurry into the cavity (1) of a mold (10) composed of a set of splits (3 and 4), the set of splits (3 and 4) being assembled together to form the cavity (1) with a prescribed configuration, to form a pulp deposited body (5), feeding a fluid into the cavity (1) to press the pulp deposited body (5) onto the inner wall of the cavity (1) for dewatering.

Abstract: The invention relates to an apparatus and method for producing articles (5) from moulded pulp material that are laminated with a plastic film (4). Thus an environmental friendly and water-resistant package for food products and for other moulded pulp products such as packages for industrial products is provided. The apparatus comprises a moulding line 1 and a laminating line (3). The moulding line (1) comprises a suction moulding station (20) with a pulp vat (25) and a number of suction moulds (22), a drying oven (28) and conveying means (26,28) for transporting the moulded pulp articles through the moulding line (1). The articles are transported in line by a conveyor 10 from the moulding line (1) to the laminating line (3), the laminating line (3) comprises a plastic film supply unit (47), a heating station (69) a laminating station (80) and conveying means (56) for conveying the articles (5) through the laminating line (3).

Abstract: A mold with integral screen comprising a body of material having a surface, the body has a grid-like pattern of vacuum holes extending through the body of material and opening through said surface and permitting a vacuum to be supplied to said surface, a screen overlying said surface, said screen and said body being formed of the same material as the body and being integral.

Abstract: A method of producing a pulp molded article is disclosed. The method comprises the steps of: feeding a pulp slurry to a cavity (4) of a papermaking mold (1) having a prescribed cavity shape to form a pulp preform (7) comprising a main part (7a) having an opening and a separable part (7b) having a flange (7c) and connected to the edge of the opening; inserting a pressing member (8) into the preform (7); expanding the pressing member (8) to press the preform (7) toward the papermaking surface; removing the preform (7) from the papermaking mold (1); and then cutting the preform (7) at a joint between the separable part (7b) and the main part (7a).

Abstract: Pulp deposited bodies (7 and 8) are formed on the surfaces (2a and 3a) of a set of splits (2 and 3) of a papermaking mold, each split having a plurality of interconnecting holes connecting the outside to the inside thereof, and the splits (2 and 3) are mated to join the pulp deposited bodies (7 and 8).

Abstract: Pulp deposited bodies (7 and 8) are formed on the surfaces (2a and 3a) of a set of splits (2 and 3) of a papermaking mold, each split having a plurality of interconnecting holes connecting the outside to the inside thereof, and the splits (2 and 3) are mated to join the pulp deposited bodies (7 and 8).

Abstract: A pulp molded article is produced by depositing pulp fiber on the outer surface of a papermaking core mold having a plurality of interconnecting paths connecting the outside and the inside to form a pulp deposited body, placing the pulp deposited body in a set of split molds, and then pressing the pulp deposited body for dehydration by a prescribed means.

Abstract: A disc filter used in the pulp and paper industry meets modern requirements by axially dividing the tank and shaft (with the flow channels) into at least two separate and distinct portions, so that the treatment of pulp in several different stages using the same disc filter is possible.

Abstract: A method and apparatus for forming articles, used as dunnage material, from pulped paper products includes a paper shredder that forms the pulped paper and delivers it to a slurry tank. The slurry tank gravity feeds the slurry into a slurry reservoir where a pump pumps the slurry into molds. A plunger delivers compressed air to the slurry blobs contained within each molds to expand the slurry blobs to the shape of the molds and to force the water in the slurry through an outlet in the bottom of the molds to a vacuum chamber connected to the molds. The delivery of compressed air further forms a cavity within the expanded slurry blobs. During the next four steps, the molds again connect to the vacuum so that additional water is forced from the pulp into the vacuum chamber. Finally, an ejector supplies compressed air to the bottom of the molds such that the finished articles are propelled from the molds onto a conveyor which delivers the cubes to packaging machines.

Abstract: Free-flowing dunnage of molded pulp pieces (10), having random non-nestable shapes to insure the free-flowing characteristic, is made by a method and apparatus involving partially drying pulp fibers on a forming-die screen (38) to form intermediate dish-shaped pieces, form-free removal of such pieces from the screen, and thereafter drying them free of form support to obtain random shapes. One preferred embodiment involves blowing intermediate pieces from the screen onto a conveyor (50) for subsequent drying, such blowing and landing altering the intermediate piece shapes to enhance randomness in the shapes of the dunnage pieces, and another involves using heated air for partial drying.

Abstract: Tubular filter elements are formed by first feeding a slurry into a tubular moulding space between a vertical core and a cylindrical fine mesh screen. Air pressure is applied to the slurry so that the liquid drains through the screen and through a screen at one base of the space, while a mass of microfibres builds up to be removed from the space for bonding by a synthetic resin. A reciprocable sleeve increases the effective height of the screen as the mass builds up. Layers of microfibres having different qualities can be assembled by using different core diameters in succession. Filter elements that need not necessarily be cylindrical can be formed by this or analogous pressure methods in which the majority of the microfibres are directed approximately parallel to one another, and/or in which one or each face of the filter element has moulded into it a perforated sheet of supporting material.