EP2167731A1 - Procédé de fabrication de panneaux permettant de construire des articles de mobilier tels que des placards, des cuisines modulaires et des éléments mobiliers en général, et panneaux obtenus à partir du procédé - Google Patents

Procédé de fabrication de panneaux permettant de construire des articles de mobilier tels que des placards, des cuisines modulaires et des éléments mobiliers en général, et panneaux obtenus à partir du procédé

Info

Publication number
EP2167731A1
EP2167731A1 EP08708202A EP08708202A EP2167731A1 EP 2167731 A1 EP2167731 A1 EP 2167731A1 EP 08708202 A EP08708202 A EP 08708202A EP 08708202 A EP08708202 A EP 08708202A EP 2167731 A1 EP2167731 A1 EP 2167731A1
Authority
EP
European Patent Office
Prior art keywords
resin
panel
blanket
finished product
cubic metre
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP08708202A
Other languages
German (de)
English (en)
Inventor
Roberta Bas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Macber Srl
Original Assignee
Macber Srl
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
Priority claimed from ITPN20070004 external-priority patent/ITPN20070004A1/it
Priority claimed from ITPN20070005 external-priority patent/ITPN20070005A1/it
Application filed by Macber Srl filed Critical Macber Srl
Publication of EP2167731A1 publication Critical patent/EP2167731A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J1/00—Fibreboard

Definitions

  • the present invention relates to a process for manufacturing panels for constructing articles of furniture such as cupboards, modular kitchens and furniture items in general, and a panel obtained by the process.
  • An object of the invention is to provide a process for manufacturing a panel for use in the production of articles of furniture which eliminates the defects and drawbacks of the methods and panels of known type.
  • Another object of the invention is to produce panels for use in the construction of furnishing elements by which the consumption of economical and energy resources is reduced compared with currently known panel production methods.
  • Another object of the invention is to provide a panel usable in the furniture sector presenting mechanical characteristics equal to or better than those of currently known panels, which is made of materials alternative to those currently used for similar products.
  • the process of the invention consists substantially of preparing a mass composed of fibrous material and impregnating this material with a binding agent.
  • the quantity of the various materials which make up the panels of the invention refer to the production of one cubic metre of finished product.
  • the present manufacturing method requires a quantity of between 350 kg and 900 kg of "dry" paper mill sludge, in which the length of the cellulose fibres is too short for its reuse in paper production.
  • dry sludge the sludge extracted from the paper mill production lines is dried by squeezing it to reduce the aqueous component of the sludge to 30-40% by weight, followed by a drying process which further reduces that percentage to about 5% by weight.
  • the sludge is defined as "dry”.
  • the dry sludge is in the form of cylindrical blocks which at the moment of use are micronized in machines provided with adjacent rotary discs the position of which can be adjusted to modify the fibre length and diameter.
  • a downy mass is obtained, which is spread uniformly over a surface to form a blanket of homogeneous consistency.
  • the blanket obtained in this manner is pressed in a press and simultaneously impregnated with a binding agent consisting of a soluble resin preferably chosen from sodium silicate and acrylic, phenolic, urea and vinyl resins.
  • a binding agent consisting of a soluble resin preferably chosen from sodium silicate and acrylic, phenolic, urea and vinyl resins.
  • the dry residue of this resin is between 30% and 50%, the resin quantity being between 600 kg and 1 100 kg per cubic metre of finished product.
  • the sodium silicate known also as waterglass
  • the present invention has a dry residue of about 35-36%.
  • the binding agent is forced between the interstices of the blanket by subjecting this latter to a pressure gradient between its lower and upper surface.
  • impregnation with waterglass gives the product fireproof and self-extinguishing properties.
  • the blanket impregnated with binding agent is dried to eliminate the solvent component of the binding agent by maintaining it pressed i.e. without interrupting the pressing applied during its impregnation.
  • the drying temperature is preferably between 200 and 220 0 C, while the drying time is generally equal to one minute for each millimetre of thickness of the finished panel. It is essential to maintain blanket pressing during drying to avoid the strong shrinkage to which the panel is subjected during formation by the evaporation of the binder solvent portion from causing crumbling and/or permanent deformation of the panel.
  • a cubic metre of finished product comprises a soluble resin quantity of 180-550 kg. If waterglass is used as the binding agent, said quantity is between 200 kg and 400 kg.
  • this drying can take place in a saturated carbon dioxide atmosphere. This gas enables the drying temperature to be raised without running the risk of burning the fibres of the processed product as oxygen is not present in a form suitable for participation in a combustion reaction.
  • hardening of the waterglass is favoured by the presence of carbon dioxide, with a further reduction in drying time.
  • the chemical reaction taking place between the sodium silicate and the carbon dioxide is the following: Na 2 CnSiO 2 + H 2 O -» NaHCO 3 + nSiO 2
  • the carbon dioxide used in the sodium silicate solidification can be withdrawn from the atmospheric air, so contributing to reducing the presence of this component and favouring air quality improvement.
  • This chemical reaction can also take place at ambient temperature (conventionally fixed at 20 0 C), so that, if following drying of the product being processed there is still a quantity of sodium silicate present which has not participated in the reaction, this quantity can participate in it even after the finished panel has been formed.
  • the processing waste which is produced when the panel is trimmed to size and/or machined can also be used as a material usable to reduce the presence of carbon dioxide in the atmospheric air.
  • Dry sludge quantities between 450 kg and 670 kg per cubic metre increase the panel fragility as the lower limit of the range is approached. If a sludge quantity less than 450 kg is used, the panel is no longer usable for manufacturing articles of furniture.
  • Sludge quantities greater than 900 kg disadvantageously increase the total panel weight, resulting in transport and handling difficulties during working.
  • the panel produced by the method of the invention presents mechanical characteristics suitable for its use in furniture production and improved workability.
  • the method of the invention requires a total quantity between 450 kg and 700 kg of paper mill sludge to which a quantity between 70 kg and 250 kg of natural or synthetic polymer-type material is added, comprising a mixture of different thermoplastic and/or thermosetting types such as ABS (acrylonitrile-butadiene-styrene), polystyrene, or phenolic, epoxy or polyurethane resins, previously micronized.
  • ABS acrylonitrile-butadiene-styrene
  • polystyrene polystyrene
  • phenolic, epoxy or polyurethane resins previously micronized.
  • the mixture obtained in this manner is uniformly spread over a surface to form a blanket of homogeneous consistency and pressed under hot conditions in a press.
  • the pressing temperature is greater than or equal to that required to melt the polymer material, the temperature being in particular at least 180 0 C.
  • Hot-pressing the mixture blanket or layer of paper mill sludge and polymer material results in a semifinished product having the form of a thick sheet consisting of fibre aggregate.
  • the semifinished product is transported into an impregnation station in which it is permeated by a binding agent.
  • the component quantities to be used to manufacture a panel usable for constructing articles of furniture are shown below.

Landscapes

  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

La présente invention concerne un procédé de fabrication de panneaux, en particulier des panneaux pour produire des articles de mobilier. Le procédé est caractérisé en ce qu'il consiste à: obtenir une masse de boue de papeterie dans une quantité allant de 450 à 900 kg par mètre cube de produit fini; microniser ladite boue de papeterie et la répandre sur une surface pour former une couche; presser ladite couche et la mélanger simultanément avec une quantité de résine soluble comprise entre 600 et 1 100 kg par mètre cube de produit fini; sécher la couche imprégnée avec la résine soluble tout en maintenant ladite couche pressée.
EP08708202A 2007-02-01 2008-01-25 Procédé de fabrication de panneaux permettant de construire des articles de mobilier tels que des placards, des cuisines modulaires et des éléments mobiliers en général, et panneaux obtenus à partir du procédé Withdrawn EP2167731A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITPN20070004 ITPN20070004A1 (it) 2007-02-01 2007-02-01 "pannello per la fabbricazione di articoli di arredamento e relativo metodo di produzione"
ITPN20070005 ITPN20070005A1 (it) 2007-02-01 2007-02-01 "procedimento di fabbricazione di un pannello per articoli di arredamento e relativo pannello"
PCT/EP2008/050872 WO2008092807A1 (fr) 2007-02-01 2008-01-25 Procédé de fabrication de panneaux permettant de construire des articles de mobilier tels que des placards, des cuisines modulaires et des éléments mobiliers en général, et panneaux obtenus à partir du procédé

Publications (1)

Publication Number Publication Date
EP2167731A1 true EP2167731A1 (fr) 2010-03-31

Family

ID=39361253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08708202A Withdrawn EP2167731A1 (fr) 2007-02-01 2008-01-25 Procédé de fabrication de panneaux permettant de construire des articles de mobilier tels que des placards, des cuisines modulaires et des éléments mobiliers en général, et panneaux obtenus à partir du procédé

Country Status (2)

Country Link
EP (1) EP2167731A1 (fr)
WO (1) WO2008092807A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CO6290089A1 (es) * 2009-12-16 2011-06-20 Quiroz Edwin Andres Garcia Proceso para fabricar materiales de construccion a partir de residuos celulosicos

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1405587A (en) * 1971-07-21 1975-09-10 Nat Res Dev Production of shaped articles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008092807A1 *

Also Published As

Publication number Publication date
WO2008092807A1 (fr) 2008-08-07

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