Abstract: A pulp mould, comprising a porous sintered body (11) having an outer surface (13) and an inner surface (12), wherein a portion (11B) of said mould comprises an area (16) at its outer periphery provided with means (16A; 47) integrated during sintering to achieve impermeability of said outer area (16).

Abstract: A papermaking mold for producing a pulp molded article comprising a core of prescribed shape which has a plurality of holes for fluid passage interconnecting the outside and the inside and is made of an elastically deformable material and a fluid-permeable material which covers the outer surface of the core, the fluid-permeable material being capable of forming passages for a fluid in its thickness direction even when pressed and deformed.

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: The pulp mold of the invention comprises a plurality of successive pulp mold units. Each unit comprises a plurality of higher and lower surfaces such that the pulp mold has a plurality of corrugated surfaces to provide a plurality of cushions and to simulate the deformation and spring recovery effect for performing positioning and cushioning. The pulp mold of the invention can adjust the number of pulp mold unit according to the weight and size of the article. The molding unit means of the invention can be constructed to be suitable for various articles. When the articles are no longer manufactured, the molding unit means can be re-constructed to be suitably used on other products.

Abstract: Disclosed is a pulp product manufacturing apparatus.

Abstract: The mutually associated moulding tools, such as a suction mould and an associated pressing-and-depositing mould, neither of which are shown, comprise a baseplate (1) with a modularly divided, rectangular area (2) provided with perforations (3), on which area (2) it is possible to secure, e.g. by means of screws, a number of closely adjacent modular mould parts (A,B) with a rectangular outline, each of the modular mould parts (A,B) serving to produce an article (C,D,E) to be separated from the pulp-material shell having been produced in a subsequent operation. With this arrangement, it is possible to keep the cost of manufacturing the moulding tools and the time required for re-arranging them at such low levels, that even small series of articles (C,D,E) may be manufactured profitably.

Abstract: An apparatus and method for molding articles from a fibrous slurry. The apparatus comprises a forming die manufactured from a water insoluble, porous, relatively rigid and easily shaped material having molding surface shaped to the contour of the article to be molded, a vacuum vessel for receiving the forming die, and an opening through the vacuum vessel for communicating with a vacuum means for applying suction through the forming die to draw the slurry against the molding surfaces to form a fiber layer having the configuration of the article to be molded.

Abstract: An improved flexible manufacturing process for making molded fiber products uses a molding machine provided with a large number of ports for mounting a variety of molds. Quick release mold attachments permit rapid changeover of production output. The molds used are designed to have a predetermined total height, and platen stops maintain this design separation during transfer of the molded product. An expanded stock chest is provided to permit a higher pulp usage rate. Separate positive air supply lines are provided for the different transfer mold sites. Using these separate lines, a novel air volume and flow control method is provided to control the volume of air applied to release products from transfer molds, permitting manufacture of a variety of complex structures. The air flow controls permit control of both the rate of flow and the duration of the selected rate of flow of positive pressure air, thus providing total volume control.

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 mold is disclosed for producing a pulp molding. The mold includes a reticulate resin mold part (1) of a three-dimensional shape. The resin mold part (1) is metallized for reinforcement and mounted on a support member (3) made of a resin, metal, or aggregate. The support member has substantially the same three-dimensional shape as that of the reticulate resin mold part, and has openings (3A, 3A) to discharge water from the openings (1A, 1A) of the metallized resin mold part (2).

Abstract: A mold composed of bonded water-insoluble particles and having a molding layer and a support layer. The molding layer includes first water insoluble particles, having an average size of 0.2-1.0 mm bonded to form a layer having a thickness 1-20 times the average size of the first particles. The support layer positioned on the inner surface of the molding layer, on which the fiber bodies are not formed, includes of second water-insoluble particles, having an average size of 1.0-10.0 mm, bonded to form a layer having a thickness of at least the average size of the second particles. The pulp mold has advantages in that it hardly suffers from clogging, it produces fiber bodies each having a smooth surface, it is free from damage caused by repeated use, and it produces fiber bodies in a short period of time.

Abstract: An improved mold construction is disclosed which is particularly useful in the manufacture of molded pulp products. The mold construction includes a rigid foraminous base member shaped to define the desired product, and a support frame having a first groove adapted to receive the marginal edge of the base member and a second groove which releasably receives a retainer member. The frame support is manipulatable to allow insertion and removal of the marginal edge of the base member into and from the first groove when the retainer member is removed from the second groove, but may not be so manipulated when the retainer member is inserted within the second groove. In one embodiment, the retainer member is separable from the support frame, while in an alternative embodiment the retainer member is formed integral with the support frame.