WO1993017183A1 - Equipement pour la fabrication d'articles en fibre vegetale, et moule a aspiration destine a cet equipement - Google Patents

Equipement pour la fabrication d'articles en fibre vegetale, et moule a aspiration destine a cet equipement Download PDF

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Publication number
WO1993017183A1
WO1993017183A1 PCT/DK1993/000071 DK9300071W WO9317183A1 WO 1993017183 A1 WO1993017183 A1 WO 1993017183A1 DK 9300071 W DK9300071 W DK 9300071W WO 9317183 A1 WO9317183 A1 WO 9317183A1
Authority
WO
WIPO (PCT)
Prior art keywords
projections
mould
papier
suction mould
wire gauze
Prior art date
Application number
PCT/DK1993/000071
Other languages
English (en)
Inventor
Poul Erik Jessen
Ib Jørgen KJELDSEN
René PIHL
Torben Rasmussen
Original Assignee
Brødrene Hartmann A/S
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8091558&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1993017183(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Brødrene Hartmann A/S filed Critical Brødrene Hartmann A/S
Priority to DE69307304T priority Critical patent/DE69307304T2/de
Priority to EP93905228A priority patent/EP0637353B1/fr
Publication of WO1993017183A1 publication Critical patent/WO1993017183A1/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
    • 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
    • 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

Definitions

  • the present invention relates to equipment of the kind set forth in the preamble of claim 1.
  • the suction moulds are costly to produce, especially if they are to comprise a great number of projections or raised portions, as the sha ⁇ ping surface is produced by material-removing machining of a metallic blank, the shaping surface of which is formed by a through-going metal gauze having been shaped in its en- tirety.
  • Such suction moulds can only be used profitably for making extremely great numbers of uniform products, such as e.g. egg trays or egg packages.
  • the invention also relates to a suction mould to be used in equipment according to the invention.
  • a preferred embodiment for such a suction mould is set forth in claim 2.
  • FIG. 3 Another embodiment of the suction mould according to the invention is set forth in claim 3.
  • the use of stainless steel makes the components concerned easy to clean and pro ⁇ tects them against electrolytic corrosion.
  • the combination set forth in items b and c has proved suitable for achieving a homogenous deposition of pulp material on the shaping sur- face of the suction mould.
  • a further preferred embodiment is set forth in claim 4.
  • Especially high-density polyethylene is cheap and easy to shape at low cost to the desired shapes, while its hy- drophobic surface properties reduce the necessary cleaning of the suction mould.
  • a wire-gauze covering made in the manner indicated has proved to serve its purpose excellently, and the resi ⁇ stance welding of the wire gauze has proved not to reduce its permeability.
  • the suction mould may also exhibit the features set forth in claim 6.
  • a protruding rib will be formed be ⁇ tween the ribs referred to on the side of the papier-mache product facing the suction mould, while on the opposite side of the product a projection with a relatively plane surface will be formed, said projection, when dried papier-mache products are stacked on top of each other and nested within each other, will abut against the protruding rib on the papier-mache product lying immediately above, thus producing a certain spacing from the latter.
  • the present invention also relates to equipment of the kind set forth in the preamble of claim 7, and according to the invention, this equipment is charac- terized by the features set forth in the c a act rizing clause of said claim 7. with this arrangement it is possible to exploit the benefits of the modular-system arrangement set forth in claim 1 and used for making the suction mould.
  • Figure 1 is a partial plan view of the corner of a suction mould according to the invention
  • Figure 2 is a sectional view along the line A-A in Figure 1,
  • Figure 3 is a sectional view along the line A-B in Figure 1
  • Figure 4 is a partial sectional view through a region of a pressing mould according to the invention.
  • FIGS 1-3 show a corner of a suction mould generally designated 1.
  • the suction mould 1 comprises a plane metal plate 2, along the periphery of which a so-called flushing edge 3 is secured by means of screws 4.
  • the metal plate 2 is perforated by a number of through-going bores 5, prefer ⁇ ably with a diameter of 2 mm and having their centres spaced from each other by appr. 8 mm, the moulding surface of said metal sheet 2 being covered by 50-mesh metal wire gauze 6. Both the metal plate 2 and the metal wire gauze 6 are made of stainless steel.
  • Projections generally designated 8 are secured to the metal plate 2 above suitable openings 7, each of said projections consisting of a hollow member 9 of high-density polyethylene, the external surface of which is covered with metal-wire gauze 10.
  • the hollow members 9 are perforated by bores 11, like the bores 5 in the plate 2 having a diameter of 2 mm and preferably having their centres spaced approximately 8 mm apart.
  • the metal-wire gauze 10 is made from stain- less steel and has a mesh size of 50.
  • the projections 8 are secured to the metal plate 2 by means of screws 12.
  • the projections 8 shown in the drawing all have the same dimensions and the same shape, as they are shaped some- what like truncated cones with square base and rounded cor ⁇ ners. It is, however, to be understood that according to the present invention, the projections 8 may have various dimensions and shapes, such as similar to a truncated cone with a rectangular base and rounded corners, and they may have been selected among a modular system comprising pre- -fabricated projections of a relatively small number of types with different dimensions and shapes.
  • a pair of ribs 13 are placed close side-by-side between two of the projections 8.
  • the purpose of these ribs 13 is to produce a recess with a downwardly protruding rib on the surface shaped by the suction mould 1 on the papier-mSche product made on this mould, and to produce a substantially plane raised portion on the opposite surface of the product, said rib and a corresponding raised portion on the next product lying below in a stack of nested papier-mSche pro ⁇ ducts having as their purpose to make it easier to separate stacked products from each other.
  • Figure 4 is a partial sectional view of a region of a pressing mould according to the present invention, adapted for hot-pressing of a dried papier-mache product made with a suction mould according to the invention.
  • the pressing mould consists of a first mould part generally designated 14 and a second mould part generally designated 15.
  • the first mould part 14 comprises projections 16 of a shape complementary to the shape of the recesses produced in the dried papier-mache product by the shaping surface of the suction mould, while the second mould part
  • the projection 15 comprises recesses 17 of a shape complementary to the shape of the projections 16 on the first mould part, but having dimensions greater than the projections 16 on the first mould part enlarged by the wall thickness of the hot- -pressed papier-mSche product.
  • Both the projections 16 and the recesses 17 may be produced by suitably machining metal ⁇ lic work pieces.
  • the projection 16 shown in Figure 4 is pre-fabricated and chosen from second modular system comprising a relatively small number of types with different dimensions and shapes corresponding to the dimensions and shapes after shrinkage of the recesses produced in the papier-mSch ⁇ product using projections according to the first-mentioned modular system described in connection with the suction mould related to with reference to Figures 1-3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Buffer Packaging (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Equipement comprenant un moule à aspiration (1) comprenant une plaque (2) munie de perforations (5) et d'un tissu métallique de recouvrement (6). Un certain nombre de projections (8) constituant des éléments creux (9) réalisés dans une matière plastique telle que du polyéthylène de faible densité, sont fixés sur des ouvertures appropriées (7) ménagées dans la plaque (2) et dans le treillis métallique (6). Les éléments creux (9) sont perforés (11) et recouverts d'un tissu métallique (10) à l'extérieur. Il sont choisis dans un premier système modulaire comprenant un nombre relativement faible de types de projections (8) préfabriqués, de dimensions et taille différentes. L'équipement peut également comprendre un moule de pressage (non représenté) pour pressage à chaud de produits en papier mâché réalisé dans le moule à aspiration, ledit moule comprenant un premier élément dont les saillies ont une forme et des dimensions complémentaires des évidements du produit en papier mâché façonné par les saillies contre le moule à aspiration, et un deuxième élément de moulage présentant des évidements complémentaires des saillies du premier élément de moulage, mais plus largement dimensionné de manière à ménager l'épaisseur du produit pressé en papier mâché. Les saillies du premier élément de moule sont préfabriquées. Elles sont choisies dans un deuxième système modulaire comprenant un nombre relativement limité de types de dimensions et de tailles différentes, après un retrait correspondant aux dimensions des évidements réalisés dans le produit en papier mâché par les saillies du premier système modulaire.
PCT/DK1993/000071 1992-02-28 1993-02-26 Equipement pour la fabrication d'articles en fibre vegetale, et moule a aspiration destine a cet equipement WO1993017183A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69307304T DE69307304T2 (de) 1992-02-28 1993-02-26 Einrichtung zur herstellung von formkörpern aus faserbrei
EP93905228A EP0637353B1 (fr) 1992-02-28 1993-02-26 Equipement pour la fabrication d'articles a partir d'une pate fibreuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK026292A DK169084B1 (da) 1992-02-28 1992-02-28 Anlæg til fremstilling af et skalformet papmacheemne af pulpmateriale
DK0262/92 1992-02-28

Publications (1)

Publication Number Publication Date
WO1993017183A1 true WO1993017183A1 (fr) 1993-09-02

Family

ID=8091558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1993/000071 WO1993017183A1 (fr) 1992-02-28 1993-02-26 Equipement pour la fabrication d'articles en fibre vegetale, et moule a aspiration destine a cet equipement

Country Status (6)

Country Link
EP (1) EP0637353B1 (fr)
AT (1) ATE147449T1 (fr)
AU (1) AU3627793A (fr)
DE (1) DE69307304T2 (fr)
DK (1) DK169084B1 (fr)
WO (1) WO1993017183A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994024371A1 (fr) * 1993-04-15 1994-10-27 Brødrene Hartmann A/S Outils de moulage modulaires utilises dans une machine a fabriquer des carapaces ou des flans a parois minces a partir d'un materiau en pate
FR2711622A1 (fr) * 1993-10-27 1995-05-05 Anacellulose Elément de protection contre les chocs, procédé de fabrication et dispositif pour la mise en Óoeuvre du procédé.
EP0687327A4 (fr) * 1993-02-16 1997-06-25 Moulded Fibre Technology Inc Appareil et procedes de production d'articles moules
EP1323857A2 (fr) * 2001-12-25 2003-07-02 Toyoda Boshoku Corporation Non-tissé à trois dimensions, moule utilisé et procédé de fabrication
CN109371762A (zh) * 2018-10-30 2019-02-22 永发（河南）模塑科技发展有限公司 一种纸浆模塑制品及其模具和窄跑道工艺方法
WO2021073674A3 (fr) * 2019-10-14 2021-06-10 Kiefel Gmbh Installation de mise en forme de fibres destinée à la fabrication d'articles moulés en matière fibreuse biodégradable
WO2021073673A3 (fr) * 2019-10-14 2021-06-10 Kiefel Gmbh Installation de moulage de fibres pour fabriquer des pièces moulées à partie de matière fibreuse dégradable de manière écocompatible

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627841A (en) * 1945-12-14 1949-08-17 Mapes Cons Mfg Co Dies for molding pulp articles
GB708393A (en) * 1952-01-17 1954-05-05 Mapes Cons Mfg Co Pulp molding dies
US2903062A (en) * 1955-09-16 1959-09-08 Central Fibre Products Company Pulp-molding dies

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627841A (en) * 1945-12-14 1949-08-17 Mapes Cons Mfg Co Dies for molding pulp articles
GB708393A (en) * 1952-01-17 1954-05-05 Mapes Cons Mfg Co Pulp molding dies
US2903062A (en) * 1955-09-16 1959-09-08 Central Fibre Products Company Pulp-molding dies

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0687327A4 (fr) * 1993-02-16 1997-06-25 Moulded Fibre Technology Inc Appareil et procedes de production d'articles moules
WO1994024371A1 (fr) * 1993-04-15 1994-10-27 Brødrene Hartmann A/S Outils de moulage modulaires utilises dans une machine a fabriquer des carapaces ou des flans a parois minces a partir d'un materiau en pate
US6149772A (en) * 1993-04-15 2000-11-21 Brodrene Hartmann A/S Modular moulding tools for use in a machine for manufacturing shells or thin-walled blanks from pulp material
FR2711622A1 (fr) * 1993-10-27 1995-05-05 Anacellulose Elément de protection contre les chocs, procédé de fabrication et dispositif pour la mise en Óoeuvre du procédé.
EP1323857A2 (fr) * 2001-12-25 2003-07-02 Toyoda Boshoku Corporation Non-tissé à trois dimensions, moule utilisé et procédé de fabrication
EP1323857A3 (fr) * 2001-12-25 2005-02-02 Toyoda Boshoku Corporation Non-tissé à trois dimensions, moule utilisé et procédé de fabrication
CN109371762A (zh) * 2018-10-30 2019-02-22 永发（河南）模塑科技发展有限公司 一种纸浆模塑制品及其模具和窄跑道工艺方法
CN109371762B (zh) * 2018-10-30 2024-05-10 永发（河南）模塑科技发展有限公司 一种纸浆模塑制品及其模具和窄跑道工艺方法
WO2021073674A3 (fr) * 2019-10-14 2021-06-10 Kiefel Gmbh Installation de mise en forme de fibres destinée à la fabrication d'articles moulés en matière fibreuse biodégradable
WO2021073673A3 (fr) * 2019-10-14 2021-06-10 Kiefel Gmbh Installation de moulage de fibres pour fabriquer des pièces moulées à partie de matière fibreuse dégradable de manière écocompatible

Also Published As

Publication number Publication date
ATE147449T1 (de) 1997-01-15
EP0637353B1 (fr) 1997-01-08
DK26292A (da) 1993-08-29
DE69307304T2 (de) 1997-05-15
EP0637353A1 (fr) 1995-02-08
AU3627793A (en) 1993-09-13
DK169084B1 (da) 1994-08-08
DE69307304D1 (de) 1997-02-20
DK26292D0 (da) 1992-02-28

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