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WO1999056923A1 - Elements moules a partir de granules de coques dures de noix de coco, et leur procede de production - Google Patents

Elements moules a partir de granules de coques dures de noix de coco, et leur procede de production Download PDF

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Publication number
WO1999056923A1
WO1999056923A1 PCT/EP1999/002935 EP9902935W WO9956923A1 WO 1999056923 A1 WO1999056923 A1 WO 1999056923A1 EP 9902935 W EP9902935 W EP 9902935W WO 9956923 A1 WO9956923 A1 WO 9956923A1
Authority
WO
WIPO (PCT)
Prior art keywords
binder
granules
coconut
hard
produced
Prior art date
Application number
PCT/EP1999/002935
Other languages
German (de)
English (en)
Inventor
Rüdiger MENGE
Original Assignee
Rudolph, Norbert-W.
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 Rudolph, Norbert-W. filed Critical Rudolph, Norbert-W.
Priority to AU38254/99A priority Critical patent/AU3825499A/en
Publication of WO1999056923A1 publication Critical patent/WO1999056923A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles

Definitions

  • Molded elements made from coconut hard shell granules and process for their
  • the invention relates to molded elements and processes for their production, which are based on a novel starting material, namely granules made from hard coconut shells.
  • Shaped elements in the sense of the invention are primarily plate-shaped moldings, preferably for building purposes, the production of furniture or the like, which essentially correspond to hardboard or chipboard, but also other moldings in general, in which the special properties resulting from the coconut Hard shell granules produced surfaces.
  • Conventional hardboard or chipboard is designed for certain purposes by chemical additives, that is, made more resistant to mechanical stress, water-resistant and the like.
  • coconut fibers are used for various purposes, the leaves and stems of the coconut palm as well as the coconut meat from which Copra and the like are made.
  • the hard shells usually only represent waste and must be disposed of. Even in the production of activated carbon, the hard shell is only partially used. Although it is known to use portions of coconut shells ground to powder in plate processing, this is done primarily to support the binder, but does not produce molded parts made from hard coconut shells.
  • the invention is based on the object of providing molded parts made from hard coconut shells and a process for their production so that the hard coconut shells which are usually produced as waste can be used, and the molded parts, in particular plates, produced therefrom are lightweight have high mechanical strength and high water resistance and, moreover, panels which can be used excellently in the construction sector can be produced with little economic outlay.
  • the invention proposes a method for producing molded elements, wherein a granulate made of coconut hard shells with an activatable binder without Cold adhesive properties are mixed, shaped and, after activation of the binder, is finally shaped by pressing.
  • the method can be used to produce a molded element from coconut hard shell granulate, preferably in plate form, which, according to an advantageous proposal of the invention, has a bulk density of approximately 600 g / dm 3 .
  • molded elements manufactured in this way in particular panels, over chipboard or hardboard used as construction panels is the fact that the panels are very hard compared to the comparatively low weight, and in particular their resistance to water, chemicals and the like.
  • the panels can be sawed, but have a strength that even allows threads to be cut into the panels.
  • granules are made from small-grain coconut hard shells, ie edge lengths between 0.1 and 2 mm. Edge lengths of 0.8 to 1.6 mm are preferably used. Such granules are advantageously produced by grinding, but alternative methods such as shredding, crushing by pressure and the like can also be used. When using a binder content of around 10%, preferably less than 10%, the plate produced has a bulk density of 600 g / dm 3 +/- 20 g / dm 3 .
  • fibrous natural materials preferably fibers of the outer coconut shell
  • fibrous natural materials can be added to the granules made from coconut hard shells. This makes sense in terms of production technology, since raw material procurement is concentrated.
  • a crosslinkable plastic is used as the binder, preferably a polyurethane binder.
  • appropriate additives can be used, for example borates or the like, for example to have a fire-retardant, decay-inhibiting and the like.
  • the hard coconut shells In contrast to wood shavings and comparable materials or simple fibers, the hard coconut shells have a residual moisture that is favorable for further processing, which is around 14%, while they only have a little moisture soak up. For this reason, a special procedural problem is the so-called gluing, since the individual granules have to be embedded in an activatable glue or binder.
  • the binder has no cold glue properties, so that the granules can still be processed as granules.
  • the gluing takes place, for example, by spraying, pressure spraying, centrifugal atomization or comparable gluing processes.
  • the glued granules are first preformed, that is, for example, poured onto a plate-forming station, and then, after activation of the binder, are pressed and finally shaped, for example by heat, radiation or the like.
  • the activation can e.g. B. in so-called cold-compressible binders by applying a corresponding activation pressure or the like. For this reason, a pourable mass of granulate and dry binder can also be mixed and shaped.
  • Binder activation can be carried out, for example, by passing steam through the preformed layer, from which a plate is later produced by pressing during or after the activation of the binder.
  • the invention thus represents an overall industrial concept for the production of novel molded parts, in particular sheets. It begins with the procurement of raw materials in the form of hard coconut shells, optionally with a coconut fiber shell shell. The hard shells are then processed into granules using suitable processes. These granules are provided with a binder and molded directly afterwards and after storage and / or transport in molding stations in order to be pressed and finally shaped after the binder activation.
  • Pre-classification is preferably carried out during the production of the granulate, ie excessively large granulate parts are fed to further comminution, the granulate itself is divided into different fractions.
  • the fractionation can also take place at a later point in time, for example when the granules mixed with binder are discharged onto the molding station.
  • Corresponding roller screens and the like are suitable for controlling the arrangement of granule parts of different sizes on different layers of the plate.
  • the granulate can be stored, transported and traded as an intermediate product before or after gluing. In contrast to conventional plates, this enables the local separation of process steps and / or the integration of process steps in logistics. In the country of origin, for example, granules can be produced from hard coconut shells and glued during shipping.
  • the special board manufacturing processes correspond to the usual manufacturing processes for the production of chipboard.
  • the coconut hard-shell granules practically do not swell, the plates can also be used in the moisture range if appropriate binders are used.
  • the coconut shell granules have a much lower level of flammability than comparable wood chips. The strength and wear and tear of the boards produced using the new process far exceed that of conventional particle boards.
  • the plates After the plates have been manufactured, they can be further processed as required. For example, the surfaces can be ground, coated or the like. The plates are finally assembled and sent for further processing.
  • the panels also provide original and novel surfaces, so that they are suitable for direct use in the furniture sector.
  • the invention closes a gap between completely different molded part systems and provides completely new molded parts.
  • Wood fibers, mineral fibers, cellulose fibers and the like have surfaces and absorbent properties, so that they can easily be joined to form uniform parts with binders.
  • Such masses can be cast into plates, for example, in a continuous process on large plants.
  • Such panels can be made into composite tiles and the like, for example.
  • the present invention now relates to a material which advantageously combines properties from both systems.
  • the coconut hard shell material is only slight, but at least not very absorbent and the surfaces are good for binder wetting.
  • the results are molded parts with the advantageous properties of both systems mentioned above. If the surface properties are not sufficient for the desired binder system, surface pretreatments can also take place in which the surfaces are broken open or the properties of the material are changed at least in the surface area.
  • Fig. 1 is a flowchart-like representation of a process flow in the production of molded parts according to the invention.
  • the illustration is roughly schematic and only one possible embodiment for the production of molded parts is to be explained. It is assumed that the coconut hard shells (not shown) are available as a raw material quantity. The hard shells are crushed in a mill 1 and the granules of the desired size are stored in a storage bunker 2. These processes can already be carried out separately. For example, it is conceivable to have the shredding carried out in the country of origin or on the transport routes. The storage preferably takes place where the gluing is then carried out, which is preferably carried out in a so-called gluing device 3. Glueing is to be understood as the wetting of the granulate surfaces with the appropriate binder. Without activation, the binder has no adhesive properties, so it must be activated by heat, radiation, pressure, a combination thereof or similar influences.
  • the glue / granulate mixture is in turn temporarily stored and / or transported.
  • the element is prepared in the mold preparation 4 by targeted application of glued granules, then pressed in a press 5 and finally brought to final dimensions in a final forming station 6, optionally also assembled.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

L'invention vise à créer des pièces moulées à partir de granulés de coques dures de noix de coco, ainsi qu'un procédé pour leur production, de sorte que les coques de noix de coco constituant habituellement des déchets puissent être utilisées, et de sorte que les pièces moulées, notamment les plaques ainsi produites, présentent un poids faible et une résistance mécanique élevée ainsi qu'une grande résistance à l'eau, et enfin de sorte que des plaques se prêtant remarquablement bien à une utilisation notamment dans le bâtiment puissent être produites de façon économique. A cet effet, il est prévu un procédé de production d'éléments moulés, consistant à mélanger un granulé de coques dures de noix de coco avec un liant pouvant être activé, sans propriétés adhésives à froid, puis à mouler ledit mélange et à lui donner sa forme finale par pressage après activation du liant.
PCT/EP1999/002935 1998-05-02 1999-04-29 Elements moules a partir de granules de coques dures de noix de coco, et leur procede de production WO1999056923A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38254/99A AU3825499A (en) 1998-05-02 1999-04-29 Moulded elements made of hard coconut shell granulate and method for producing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19819738.1 1998-05-02
DE19819738 1998-05-02

Publications (1)

Publication Number Publication Date
WO1999056923A1 true WO1999056923A1 (fr) 1999-11-11

Family

ID=7866551

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/002935 WO1999056923A1 (fr) 1998-05-02 1999-04-29 Elements moules a partir de granules de coques dures de noix de coco, et leur procede de production

Country Status (2)

Country Link
AU (1) AU3825499A (fr)
WO (1) WO1999056923A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002007953A1 (fr) * 2000-07-26 2002-01-31 Giesen, Heinz Procede de fabrication d'articles moules a base de plastique
WO2002022331A1 (fr) * 2000-09-13 2002-03-21 Fritz Homann Gmbh & Co. Kg Element moule en forme de plaque a base de fibres naturelles et son procede de realisation
WO2008074310A3 (fr) * 2006-12-21 2008-09-25 E & W Greenland Gmbh Matériau pour fabriquer un corps moulé, et corps moulé
DE102009056015A1 (de) * 2009-11-27 2011-06-01 Hans Willi Babka Trockenbauplatte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5328086A (en) * 1976-08-26 1978-03-15 Mitsubishi Motors Corp Compound molds of cconut shellgranules
GB2150606A (en) * 1983-11-28 1985-07-03 Dev And Investments A method of manufacture utilising coconut fibre and an article of manufacture produced using the method
JPH07150007A (ja) * 1993-11-26 1995-06-13 Sumitomo Bakelite Co Ltd フェノール樹脂成形材料
EP0729814A1 (fr) * 1995-03-03 1996-09-04 National Research Development Corporation Procédé de production de panneaux de particules de balles de riz

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5328086A (en) * 1976-08-26 1978-03-15 Mitsubishi Motors Corp Compound molds of cconut shellgranules
GB2150606A (en) * 1983-11-28 1985-07-03 Dev And Investments A method of manufacture utilising coconut fibre and an article of manufacture produced using the method
JPH07150007A (ja) * 1993-11-26 1995-06-13 Sumitomo Bakelite Co Ltd フェノール樹脂成形材料
EP0729814A1 (fr) * 1995-03-03 1996-09-04 National Research Development Corporation Procédé de production de panneaux de particules de balles de riz

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 7817, Derwent World Patents Index; Class A81, AN 78-30973A, XP002108072 *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 009 31 October 1995 (1995-10-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002007953A1 (fr) * 2000-07-26 2002-01-31 Giesen, Heinz Procede de fabrication d'articles moules a base de plastique
WO2002022331A1 (fr) * 2000-09-13 2002-03-21 Fritz Homann Gmbh & Co. Kg Element moule en forme de plaque a base de fibres naturelles et son procede de realisation
US7405248B1 (en) 2000-09-13 2008-07-29 Homatherm Ag Plate-shaped moulding elements based on natural fibres and method for the production thereof
WO2008074310A3 (fr) * 2006-12-21 2008-09-25 E & W Greenland Gmbh Matériau pour fabriquer un corps moulé, et corps moulé
DE102009056015A1 (de) * 2009-11-27 2011-06-01 Hans Willi Babka Trockenbauplatte

Also Published As

Publication number Publication date
AU3825499A (en) 1999-11-23

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