WO2023170624A1 - Agencement pour séchage de produit moulé à base de fibres et procédé de fabrication du produit - Google Patents

Agencement pour séchage de produit moulé à base de fibres et procédé de fabrication du produit Download PDF

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Publication number
WO2023170624A1
WO2023170624A1 PCT/IB2023/052252 IB2023052252W WO2023170624A1 WO 2023170624 A1 WO2023170624 A1 WO 2023170624A1 IB 2023052252 W IB2023052252 W IB 2023052252W WO 2023170624 A1 WO2023170624 A1 WO 2023170624A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
drying
mold
mold body
arrangement according
Prior art date
Application number
PCT/IB2023/052252
Other languages
English (en)
Inventor
Mikael SJÖGREN
Sohrab KAZEMAHVAZI
Original Assignee
Stora Enso Oyj
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stora Enso Oyj filed Critical Stora Enso Oyj
Publication of WO2023170624A1 publication Critical patent/WO2023170624A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3814—Porous moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/56—Compression moulding under special conditions, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
    • B29C51/365—Porous moulds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/56—Compression moulding under special conditions, e.g. vacuum
    • B29C2043/561—Compression moulding under special conditions, e.g. vacuum under vacuum conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/56—Compression moulding under special conditions, e.g. vacuum
    • B29C2043/561—Compression moulding under special conditions, e.g. vacuum under vacuum conditions
    • B29C2043/563—Compression moulding under special conditions, e.g. vacuum under vacuum conditions combined with mechanical pressure, i.e. mould plates, rams, stampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Definitions

  • the present invention relates to an arrangement and a method for producing a 3D molded product from pulp slurry.
  • Natural fibers 10 are associated with the use of natural fibers for manufacturing packages. Being a renewable resource, natural fibers provide a sustainable alternative to other packaging materials such as aluminum and plastics, and furthermore natural fibers are both recyclable and biodegradable allowing for composting. Natural fibers include cellulose fibers of any natural origin, such as derived from wood pulp and/or plants.
  • One way of producing items from fibers is by molding pulp. For instance in wet forming, an aqueous pulp suspension is applied onto a forming tool/drying mold to form a wet fiber layer followed by
  • said molding tool is perforated or porous so that water and steam can be removed from the wet pulp during forming, such as in a dewatering/drying step.
  • Dewatering is
  • W02009/105027A1 describing a device and method for compression molding a fiber tray of cellulose.
  • Another porous drying mold is seen in W02020/141208A1, wherein a pair of molds, one being porous, presses a layer of pulp to a three-dimensional product.
  • an arrangement for drying a molded, fiber-based product comprising: -a drying mold having a front side and an opposite rear side, and a porous mold body arranged to support a fiber-based product when such a product is placed on the mold front side; and
  • the suction delivery device comprises heating elements for heating the fiber-based product during drying, allowing for combined heating and suction of water and/or steam.
  • fiber-based means "containing fibrous material” such as natural fibers including cellulose fibers.
  • porous means that the mold body is arranged with small holes, passages or pores allowing liquid I air to pass through, i.e. that the mold body is air- permeable.
  • porosity as used in this description is defined as the ratio in % of perforated front side surface area (i.e. the sum of the cross-sections of all pores at the front side surface) to total front side surface area.
  • the air-permeable mold body can be made thin thanks to the support provided by the distancing structure, and thus the pores are not clogged upon use.
  • the porous mold body may comprise a higher porosity compared to known tools which allows for efficient steam evacuation, minimizing the risk for steam explosions thus allowing for application of higher drying temperatures and reducing the drying time.
  • the design of the tool also leads to even suction distribution across the mold surface, i.e. meaning that a continuous suction is delivered to an equal extent across the whole surface at the same time. This in its turn leads to a uniform and speedy drying of the product.
  • the tool according to the invention does not get clogged, it is easy to clean, the arrangement provides even and efficient drying of the fiber-layer and enables production of high-quality molded fiber products.
  • a further advantage achieved thanks to the efficient steam evacuation is the possibility of designing the mold body with a smooth top surface (i.e. the surface arranged to support the fiber product) void of large evacuation openings.
  • This means the resulting dry molded product will acquire an even surface with very low roughness which is both aesthetically appealing and also leads to improved barrier quality in case of lamination or barrier surface coating of the end product.
  • Uneven surface on a substrate on which a barrier is applied leads to the risk of pinholes and/or barrier rupture causing leakage when using the product e.g. for carrying food stuff.
  • the drying mold is made of metal, preferably aluminum.
  • the mold tolerates high temperatures such as temperatures above 200°C, such as above 250°C.
  • the porous mold body comprises a wall thickness between 1 - 10mm, preferably 2 - 5mm. Thanks to the thinness of the mold body, the pores/openings are not prone to clogging, i.e. the drying mold is void of narrow passages where fines, fibers, resins and/or chemicals risk to get stuck.
  • the porous mold body comprises a porosity between 0.1 - 50%, preferably between 0.2 - 40%, more preferably between 0.5 - 15%.
  • said porous mold body further comprises through-passages having a diameter between 0.1 - 1mm, more preferably between 0.2 - 0.9, even more preferably between 0.7 - 0.9 mm.
  • the optimized porosity of the mold body ensures even and efficient evacuation of water and steam upon drying procedure, and still does not get clogged by fines, fibers and/or chemicals.
  • said distancing structure comprises multiple, elongated bars, arranged parallel to each other at said rear side of the molding tool.
  • said parallel, elongated bars do not intersect each other, meaning that no bar intersects /crosses another bar.
  • the distance between two parallel bars is between 2 - 15mm C-C, and the thickness (t) of each bar is between 1 - 5mm.
  • the distance between two parallel bars is between 5 - 10mm C-C, and the thickness of each bar is between 1 - 2mm.
  • the distance between the mold body and said receiving space in the suction delivery base, created by said distancing structure is at least 0.5mm, preferably at least 1mm, even more preferably at least 2mm.
  • the distance between the mold body and the surface of said receiving space does not exceed 7mm, preferably does not exceed 5mm.
  • the suction delivery base comprises a suction distributing formation which, upon activation of the suction source, is arranged to distribute suction evenly across the rear side surface of the porous mold body and through the porous mold body.
  • the porous mold body is manufactured by means of 3D-printing technology, preferably from aluminum material. According to one embodiment of the invention, the porous mold body and the distancing structure are manufactured in one piece.
  • the invention also relates to a method for producing a molded product from fiber-containing pulp slurry, comprising the steps of: a) providing a pulp slurry and wet-molding a three-dimensional fiber-based intermediate structure from said slurry wherein said intermediate structure comprises a dry content between 15-60wt%; b) transferring said intermediate structure to an arrangement according to the invention; c) placing said intermediate structure on the mold body at the front side of said drying mold while activating said suction source such that a suction is drawn through said porous mold body, thereby drying said intermediate structure to a dry content of >88wt%, preferably >94wt%, more preferably >96% thus obtaining a dried molded fiber product.
  • step c) further comprises heating the intermediate structure to a temperature >150°C.
  • step c) above, representing drying may be repeated multiple, consecutive times, such as two, three, four or more times, until the end product has reached a desired dryness.
  • the method further comprises providing a second drying mold matching said first drying mold and in step c) pressing said intermediate structure between said first and second molds while applying suction preferably combined with heat to evacuate water and steam.
  • said distancing structure may be designed in many ways in addition to the above-described parallel, elongated bars.
  • the distancing structure may be arranged as non-parallel bars, or the comprise discontinuous structures and/or a grid pattern or any other outline which provides the function of creating a distancing space allowing for even distribution of applied suction.
  • Fig. 1 shows in a schematic way a perspective view, partially exploded, of an arrangement according to the invention
  • Fig. 2 shows in a schematic way a frontal view of a suction delivery base according to one embodiment of the invention
  • Fig. 3a shows in a schematic way a cross-sectional view of an arrangement according to the invention
  • Fig. 3b is a detailed view of a cross section of an assembled arrangement according to one embodiment of the invention, showing the intersection between the drying mold and the suction delivery base;
  • Figs. 4a-b shows in a schematic way a perspective view and a side view respectively of a drying mold according to one embodiment of the invention.
  • Fig. 5 illustrates in a schematic way the set-up of an arrangement according to one embodiment of the invention.
  • Fig. 1 illustrates in a schematic way an arrangement 1 according to the invention, herein seen in a partially exploded view, including a first drying mold 10 and a suction delivery base 6.
  • Said drying mold 10 has a front side 11 and a rear side 12, wherein the front side 11 is intended for carrying and supporting a molded fiber product to be dried and the rear side 12 is arranged to face the suction delivery base 6 upon assembly of the arrangement 1.
  • the drying mold 10 as pictured herein is designed to support a molded fiber product in the form of an open tray.
  • the invention is not, however, limited to trays but can be modified in shape so as to manufacture various types of molded fiber articles such as bowls, lids, boxes, bottles, packages for electronics etc.
  • the longitudinal direction L and the transverse direction T are indicated in Fig. 1.
  • the suction delivery device 6 is arranged with at least one receiving space 63 (also called “receiving cavity” 63) matching said drying mold 10 in shape and being arranged to receive said drying mold during assembly and use.
  • the suction delivery device 6 comprises two receiving spaces 63 for receiving two respective drying molds 10.
  • each receiving space 63 of the suction delivery base 6 comprises a suction distributing formation 60, which herein is in the form of a suction channel or groove extending longitudinally L along the bottom portion of the respective space 63.
  • the suction distribution formation 60 e.g. suction channel
  • the suction delivery base 6 may also comprise heating elements arranged to heat the receiving spaces 63 and transfer heat via the drying mold 10 to any fiber-based product supported by it.
  • One way of achieving such function is by means of integrating heating rods into the base 6 via internal bores 62 extending through the structure 6.
  • the drying mold 10 is now to be more thoroughly described.
  • An example of the drying mold 10 according to a preferred example of the invention is seen in Figs. 4a-c.
  • the main body of the mold 10 is made from a porous I permeable structure, herein referred to as the porous mold body 14.
  • the mold body 14 is preferably made of metal such as aluminum and comprises a wall thickness w between 1.5 - 3mm (see Fig. 3b).
  • the mold body 14 has a porosity between 0.1 - 50%, preferably between 0.2 - 40%, more preferably between 0.5 - 15%.
  • the porous mold body 14 is manufactured by means of 3D-printing technology, preferably from aluminum material.
  • the distancing structure 4 which upon assembly of the arrangement 1 creates a distancing space 5 between the rear side of said mold body 14 and the meeting surface 65 of the receiving space 63.
  • the distancing structure 4 comprises multiple, elongated bars 4', arranged parallel to each other along a transversal direction T at said rear side 12 of the mold 10 so that no bar crosses another bar.
  • the distance d between two parallel bars is between 5 - 10 mm center-to-center, and the thickness t of each bar is between 1 - 2 mm.
  • Fig. 3a illustrates a cross sectional view of an assembled arrangement 1 according to the invention, wherein a drying mold 10 is positioned in a receiving space 63 of a suction delivery body 6.
  • the distancing bars 4' of the drying mold 10 creates an open distancing space 5 between the rear wall surface of the mold body 14 and the meeting surface 65 of the respective receiving space 63.
  • the distance referred to as "X" between the rear wall surface of the mold body 14 and said meeting surface 65 is between 3 - 7 mm, or between 3 - 5 mm.
  • said distance X does not exceed 7 mm, or optionally does not exceed 5 mm.
  • the distancing structure 4 of the mold 10 is arranged so that suction drawn via the suction outlets 64 and the suction channels 60 respectively is allowed to be spread evenly across the entire rear side 12 of the mold 10.
  • this is achieved in that the suction distribution channel 60 is extending perpendicular compared to the extension direction of the distancing bars 4'. See e.g. Fig. 3a. This way, suction will reach the entire distancing space 5 created between the mold body 14 and the meeting surface 65 of the respective receiving space 63 by said bars 4'.
  • other ways of achieving the same result are conceivable.
  • Fig. 5 shows an example of the arrangement 1 according to the invention in a schematic way.
  • the invention is used for drying a fiber product that has been formed in a previous step by means of wet forming procedure.
  • wet forming a pulp slurry is provided which contains natural fibers such as cellulose fibers, and a forming mold is brought into contact with said slurry to wet-form an intermediate three-dimensional (3D) structure 3 which may be dewatered by compression to a dry content between 15-60wt% based on the total fiber content, or between 20 - 35wt%.
  • 3D three-dimensional
  • the hereby obtained semiwet intermediate 3D structure is subsequently transferred to a downstream drying station in which an arrangement 1 according to the invention is used for further drying.
  • the intermediate fiber-based structure 3 is placed on the porous / permeable body 14 at the front side 11 of the mold 10, which mold 10 is then brought into assembled position in the receiving space 63 of the suction delivery base 6 (as seen in Fig. 3a).
  • Activation of the suction source 8 then leads to that an evenly spread suction is created at the rear side 12 of the mold 10 drawing water and steam through the porous mold body 14 via said distancing space 5 and said suction channel 60, out through the suction outlets 64.
  • drying is performed by means of drawing vacuum through the drying mold and at the same time applying a pressure and heat on the fiber layer 3 present on the mold front surface 11.
  • Application of pressure can be achieved in various ways, such as using a permeable or impermeable physical pressing member as seen in Fig. 5 in the form of a second drying mold 20.
  • Other pressing methods can be used such as compressed air, a flexible pressing membrane, heated compressed air or superheated steam for pressing the fiber-based article against the respective drying mold.
  • the fiber structure 3 is heated to between 100-300°C during drying operation.
  • the intermediate 3D structure 3 is dried to a dry content of >88wt%, preferably >94wt% based on the total fiber content, more preferably >96% thus obtaining a final, dry fiber product having a three-dimensional shape.
  • the drying step as described herein may be repeated several times, wherein the dry content of the fiber-based product is increased stepwise for each round.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Pens And Brushes (AREA)
  • Details Of Garments (AREA)

Abstract

La présente invention concerne un agencement pour séchage d'un produit moulé à base de fibres comprenant : un moule de séchage comportant une face avant et une face arrière opposée, et un corps de moule poreux conçu pour supporter un produit à base de fibres lorsqu'un tel produit est placé sur la face avant de l'outil ; et une base d'aspiration accouplée à une source d'aspiration, ladite base d'aspiration comprenant un espace de réception correspondant audit moule de séchage et conçu pour recevoir ledit moule de séchage ; ledit moule de séchage comprenant en outre une structure d'espacement à l'arrière, disposée de manière à créer un espace entre l'arrière du corps du moule et l'espace de réception, la base d'aspiration étant disposée, lors de l'activation de la source d'aspiration, pour fournir une aspiration uniformément répartie sur la face avant du moule de séchage par l'intermédiaire de l'espace et à travers le corps poreux du moule.
PCT/IB2023/052252 2022-03-11 2023-03-09 Agencement pour séchage de produit moulé à base de fibres et procédé de fabrication du produit WO2023170624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2230069A SE2230069A1 (en) 2022-03-11 2022-03-11 A tool for molding a fiber-based product
SE2230069-3 2022-03-11

Publications (1)

Publication Number Publication Date
WO2023170624A1 true WO2023170624A1 (fr) 2023-09-14

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PCT/IB2023/052252 WO2023170624A1 (fr) 2022-03-11 2023-03-09 Agencement pour séchage de produit moulé à base de fibres et procédé de fabrication du produit

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SE (1) SE2230069A1 (fr)
WO (1) WO2023170624A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531864A (en) * 1992-03-06 1996-07-02 Ngk Insulators, Ltd. Method of molding shaped pulp articles from fiber pulp, and shaped pulp article
JP2003306898A (ja) * 2002-04-10 2003-10-31 Toyoda Gosei Co Ltd パルプモールド成形方法及び抄紙装置
WO2006057609A1 (fr) * 2004-11-26 2006-06-01 Pakit International Trading Company Inc Moule pour pate et utilisation dudit moule pour pate
WO2012033449A1 (fr) * 2010-09-07 2012-03-15 Pakit International Trading Company Inc. Agencement de moule pour pâte
US20180187379A1 (en) * 2015-06-23 2018-07-05 Organoclick Ab Pulp molding apparatus and molds for use therein
US20190376238A1 (en) * 2014-12-22 2019-12-12 Celwise Ab Tool or tool part, system including such a tool or tool part, method of producing such a tool or tool part and method of molding a product from a pulp slurry
WO2020016416A2 (fr) * 2018-07-19 2020-01-23 Celwise Ab Procédé de production d'un produit de pâte

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6287428B1 (en) * 1999-08-30 2001-09-11 Regale Corporation Mold with integral screen and method for making mold and apparatus and method for using the mold
JP7160444B2 (ja) * 2020-10-28 2022-10-25 セルワイズ・エービー 工具または工具部品、工具または工具部品を含む装置、工具または工具部品の製造方法、およびパルプスラリーから製品を成形する方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531864A (en) * 1992-03-06 1996-07-02 Ngk Insulators, Ltd. Method of molding shaped pulp articles from fiber pulp, and shaped pulp article
JP2003306898A (ja) * 2002-04-10 2003-10-31 Toyoda Gosei Co Ltd パルプモールド成形方法及び抄紙装置
WO2006057609A1 (fr) * 2004-11-26 2006-06-01 Pakit International Trading Company Inc Moule pour pate et utilisation dudit moule pour pate
WO2012033449A1 (fr) * 2010-09-07 2012-03-15 Pakit International Trading Company Inc. Agencement de moule pour pâte
US20190376238A1 (en) * 2014-12-22 2019-12-12 Celwise Ab Tool or tool part, system including such a tool or tool part, method of producing such a tool or tool part and method of molding a product from a pulp slurry
US20180187379A1 (en) * 2015-06-23 2018-07-05 Organoclick Ab Pulp molding apparatus and molds for use therein
WO2020016416A2 (fr) * 2018-07-19 2020-01-23 Celwise Ab Procédé de production d'un produit de pâte

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