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SE2330472A1 - A tool for wet molding a fiber-based product - Google Patents

A tool for wet molding a fiber-based product

Info

Publication number
SE2330472A1
SE2330472A1 SE2330472A SE2330472A SE2330472A1 SE 2330472 A1 SE2330472 A1 SE 2330472A1 SE 2330472 A SE2330472 A SE 2330472A SE 2330472 A SE2330472 A SE 2330472A SE 2330472 A1 SE2330472 A1 SE 2330472A1
Authority
SE
Sweden
Prior art keywords
forming side
mold body
suction
tool
bottom section
Prior art date
Application number
SE2330472A
Inventor
Mikael Sjögren
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
Priority to SE2330472A priority Critical patent/SE2330472A1/en
Priority to TW113138755A priority patent/TW202530499A/en
Priority to TW113211003U priority patent/TWM670143U/en
Priority to EP24206729.6A priority patent/EP4545704A1/en
Publication of SE2330472A1 publication Critical patent/SE2330472A1/en

Links

Classifications

    • 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
    • D21J3/10—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of hollow bodies
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)

Abstract

The present invention relates to a tool for use in a process of molding a product from a fibrous pulp slurry, said tool comprising: -a mold body having a three-dimensional forming side comprising at least one bottom section, essentially vertical sidewalls surrounding said bottom section, and a flange extending horizontally from an upper portion of said sidewalls; said mold body comprising a plurality of suction channels evenly distributed across said forming side and arranged to generate a suction at the surface of the forming side upon coupling the mold body to a vacuum suction source during use; wherein at least one of said suction channels comprises a slit opening located at the intersection between the essentially vertical sidewall and the horizontal flange, such that said slit opening is facing both said vertical sidewall and said horizontal flange.

Claims (8)

1. A tool for use in a process of molding a product from a fibrous pulp slurry, said tool comprising: -a mold body (10) having a three-dimensional forming side (2), said forming side comprising at least one bottom section (3), essentially vertical sidewalls (4) surrounding said bottom section, and a flange (5) extending horizontally from an upper portion of said sidewalls, and said mold body (10) comprising a plurality of suction channels (6) evenly distributed across said forming side (2) and arranged to generate a suction at the surface of the forming side upon coupling the mold body to a vacuum suction source during use; characterized in that at least one (60) of said suction channels comprises a slit opening (61) located at the intersection between the essentially vertical sidewall (4) and the horizontal flange (5), such that said slit opening (61) is facing both said vertical sidewall (4) and said horizontal flange (5).
2. The tool according to claim 1, wherein, upon coupling the mold body (10) to a vacuum suction source, the suction flow generated through said slit opening (61) is directed both vertically and horizontally via the same suction opening (61).
3. The tool according to claim 1, wherein said slit opening (61) has a base width (w) between 2-4mm, preferably between 2-3mm.
4. The tool according to claim 1, wherein the mold body (10) is a solid body made of cast metal, preferably aluminum.
5. The arrangement according to any one of claims 1-3, wherein the mold body (10) is manufactured by means of 3D printing.
6. The tool according to claim 1, further comprising at least one water-permeable mesh arranged to complement the three- dimensional shape of said forming side (2), said mesh being arranged to retain pulp fibers.
7. The tool according to claim 1, further comprising a cover plate (8).
8. A method for producing a molded product from fiber-containing pulp slurry comprising the steps of: -providing a mold body (10) having a three-dimensional forming side (2) comprising at least one bottom section (3), essentially vertical sidewalls (4) surrounding said bottom section and a flange (5) extending horizontally from an upper portion of said sidewalls, said mold body comprising a plurality of suction channels (6) evenly distributed across said forming side (2) arranged to deliver a suction to the surface of the forming side upon coupling the mold body to a vacuum suction source during use; wherein at least one (60) of said suction channels comprises a slit opening (61) located at the intersection between the essentially vertical sidewall (4) and the horizontal flange (5), such that said suction opening (61) is facing both said vertical sidewall (4) and said horizontal flange (5); -placing a water-permeable mesh arranged to retain pulp fibers and designed to complement the three-dimensional shape of said forming side (2), on top of said forming side (2);-positioning a cover plate (8) on said mold body (10) such that the flange (5) is at least partially covered, thereby exposing at least the bottom section (3) and essentially vertical sidewalls (4); -immersing at least the forming side (2) into an aqueous fiber- containing pulp slurry; -activating the vacuum suction source so to that a vacuum suction is generated at the forming side (2) via said suction channels (2), leading to that pulp fibers are drawn onto said mesh forming a fiber layer with a shape complementary to the shape of the mesh; -withdrawing the tool from said pulp slurry and drying said fiber layer to obtain a three-dimensional molded fiber product (9).
SE2330472A 2023-10-23 2023-10-23 A tool for wet molding a fiber-based product SE2330472A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE2330472A SE2330472A1 (en) 2023-10-23 2023-10-23 A tool for wet molding a fiber-based product
TW113138755A TW202530499A (en) 2023-10-23 2024-10-11 A tool for wet molding a fiber-based product
TW113211003U TWM670143U (en) 2023-10-23 2024-10-11 A tool for use in a process of molding a product from a fibrous pulp slurry
EP24206729.6A EP4545704A1 (en) 2023-10-23 2024-10-15 TOOL FOR WET FORMING A FIBER-BASED PRODUCT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2330472A SE2330472A1 (en) 2023-10-23 2023-10-23 A tool for wet molding a fiber-based product

Publications (1)

Publication Number Publication Date
SE2330472A1 true SE2330472A1 (en) 2025-04-24

Family

ID=93119777

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2330472A SE2330472A1 (en) 2023-10-23 2023-10-23 A tool for wet molding a fiber-based product

Country Status (3)

Country Link
EP (1) EP4545704A1 (en)
SE (1) SE2330472A1 (en)
TW (2) TWM670143U (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829568A (en) * 1957-04-05 1958-04-08 Chaplin Corp Pulp forming die
CA2069295A1 (en) * 1990-01-24 1991-07-25 Gerhard Schneider Process for the production of thick-walled shaped articles especially for packaging uses
WO2020141208A1 (en) * 2019-01-03 2020-07-09 Celwise Ab Tool and method for producing a 3d molded pulp product
JP2022136119A (en) * 2020-10-28 2022-09-15 セルワイズ・エービー Tools or tool parts, equipment containing tools or tool parts, methods of making tools or tool parts, and methods of forming products from pulp slurries
WO2023170624A1 (en) * 2022-03-11 2023-09-14 Stora Enso Oyj An arrangement for drying a molded fiber-based product and a method for producing the product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE532078C2 (en) 2008-02-20 2009-10-20 Rottneros Ab Apparatus and method for molding fiber trays
EP4098420B1 (en) * 2021-05-31 2025-11-26 Rottneros Packaging AB Compression moulding tool and method for manufacturing a fibrous pulp tray using the tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829568A (en) * 1957-04-05 1958-04-08 Chaplin Corp Pulp forming die
CA2069295A1 (en) * 1990-01-24 1991-07-25 Gerhard Schneider Process for the production of thick-walled shaped articles especially for packaging uses
WO2020141208A1 (en) * 2019-01-03 2020-07-09 Celwise Ab Tool and method for producing a 3d molded pulp product
JP2022136119A (en) * 2020-10-28 2022-09-15 セルワイズ・エービー Tools or tool parts, equipment containing tools or tool parts, methods of making tools or tool parts, and methods of forming products from pulp slurries
WO2023170624A1 (en) * 2022-03-11 2023-09-14 Stora Enso Oyj An arrangement for drying a molded fiber-based product and a method for producing the product

Also Published As

Publication number Publication date
EP4545704A1 (en) 2025-04-30
TW202530499A (en) 2025-08-01
TWM670143U (en) 2025-05-11

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