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 liquefied paper material is used as raw materials. A paper frame member 1 supporting a vibrating plate is paper-skimmed and formed. On paper-skimming and forming, a central hole for use in voice coils, air-release hole 1a releasing air pressure in a rear of the vibrating plate to outside due to vibration of the vibrating plate. A loudspeaker system is manufactured using the paper frame member 1.

Abstract: A pulp moulding process including the steps of pulp stock, forming wet products by means of forming die (7), transferring the wet products from the forming die by means of a heated transferring die-and-heated pressing tool arrangement (13)(14) for in-mould pressing and drying of the wet product, and delivering the dried products to a down line facility (18). The invention encompasses a pulp moulding system, a pulp moulding apparatus, and a pulp moulded product made by such a process, system and/or apparatus.

Abstract: Apparatus for producing a molded pulp product from a fiber slurry comprising a dip tank containing a fiber slurry therein and having a liquid level. A platen is provided. A porous mold is carried by the platen. The platen and the mold carried thereby are lowered into the fiber slurry in a downward direction with the platen being disposed upwardly of the mold so that the mold is introduced through the liquid level into the fiber slurry. A vacuum is supplied to the platen and to the mold while the mold is disposed in the fiber slurry to cause fibers in the fiber slurry to collect onto the mold and form a wet molded pulp product. The platen and the mold with the wet molded product thereon are moved out of the fiber slurry through the liquid level to permit water to drain from the mold and the wet molded pulp product. The wet molded pulp product is then dried.

Abstract: A pulp forming machine includes a forming head including a platen and plurality of mould carriers. The mould carriers are connected to the platen by mould carrier support means which allow the mould carrier and the platen to transmit forces perpendicular to the general plane of the platen but allow movement and expansion of each mould carrier in the general plane of the platen. Mould carrier to mould carrier locating means locate the mould carriers of opposing platens during the forming process to align moulds carried on the mould carriers with cooperating moulds of the cooperating platen.

Abstract: An efficient, low cost method and apparatus for controlling fiber deposition in a fiber reinforced preform is provided. In the method, a main screen is placed in a tank filled with liquid. The main screen has a major surface, upright side walls and a plurality of openings formed therein. Reinforcing fibers are added to the liquid to create a slurry. The main screen is raised through the slurry to a level beneath the top of the slurry, thereby causing the reinforcing fibers to be deposited on the main screen. A retainer screen is inserted into the slurry so that the reinforcing fibers are sandwiched between the main screen and the retainer screen. Both the main screen and retainer screen are raised out of the tank effectively forming a preform with minimal deformation. An alternative embodiment includes a bubbler zone control device for mixing the slurry. The tank is divided into separate areas or zones whereby the supply of fluid to each bubbler zone is controlled.

Abstract: An efficient, low cost method and apparatus for controlling fiber deposition in a fiber reinforced preform is provided. In the method, a main screen is placed in a tank filled with liquid. The main screen has a major surface, upright side walls and a plurality of openings formed therein. Reinforcing fibers are added to the liquid to create a slurry. The main screen is raised through the slurry to a level beneath the top of the slurry, thereby causing the reinforcing fibers to be deposited on the main screen. A retainer screen is inserted into the slurry so that the reinforcing fibers are sandwiched between the main screen and the retainer screen. Both the main screen and retainer screen are raised out of the tank effectively forming a preform with minimal deformation. An alternative embodiment includes a bubbler zone control device for mixing the slurry. The tank is divided into separate areas or zones whereby the supply of fluid to each bubbler zone is controlled.

Abstract: A cam actuated system for precisely timing and quickly operating a locking and unlocking mechanism for a quick change press, said locking and unlocking system being made of at least four locking levers, with at least two of said levers located at each side of the press, and the cam actuated mechanism including a series of at least two cam rollers which roll along the first series of at least two cam tracks for locking said press, and along a second series of at least two cam tracks, each of the series of cam tracks being fixedly mounted at a predetermined location in the travel path of the press.

Abstract: In a precision moulding or finishing machine operating in continuous motion to form fully finished products from materials such as wood pulp, an improved system for transferring a preform into a transfer mould and thence into precision mating with a finishing mould in a pressing operation suitable for manufacturing products such as bowls, cups, pots and boxes, the preform remaining in one pair of moulds throughout the pressing operation. Transfer mould assemblies are transferred sequentially from one transporting carrier to another for fully rotatable mounting on releasable mounts guided precisely through a preferred endless travel path and orientation program. The concept of a releasably mounted and freely transferable transfer mould assembly provides for the addition of such functions as printing and labelling in the same continous production line.

Abstract: A drum type disc filter device for dehydrating paper pulp slurry. The drum and the disc filters are axial drain chambers and sector type filter members. Pressurized air is fed into the drain chambers sequentially when each drain chamber and corresponding filter members are at a predetermined angle of rotation of the drum. Paper guide plates are secured between the disc filters to guide separated paper pulp cakes safely into a chute without causing interference of lumping of the paper pulp cakes.

Abstract: A method and apparatus for use in the manufacture of improved molded pulp products are disclosed wherein foraminous molds disposed over openings in a liquid impervious belt are moved beneath the surface of a flowing furnish and suction is applied to draw liquid through the molds and deposit a layer of pulp on each mold. Thereafter, the pulp deposit on each mold is simultaneously subjected to a generally uniform pressing with a second belt and suction which forms a smooth exposed surface on the pulp deposit and removes a portion of the liquid therein.