EP0367770B1 - Verfahren zur herstellung von thermischen, akustischen und schallabsorbierenden isolierplatten - Google Patents

Verfahren zur herstellung von thermischen, akustischen und schallabsorbierenden isolierplatten Download PDF

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Publication number
EP0367770B1
EP0367770B1 EP88904450A EP88904450A EP0367770B1 EP 0367770 B1 EP0367770 B1 EP 0367770B1 EP 88904450 A EP88904450 A EP 88904450A EP 88904450 A EP88904450 A EP 88904450A EP 0367770 B1 EP0367770 B1 EP 0367770B1
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EP
European Patent Office
Prior art keywords
board
preshaping
manufacturing
web
pulp
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.)
Expired - Lifetime
Application number
EP88904450A
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English (en)
French (fr)
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EP0367770A1 (de
Inventor
William Wauters
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Sa Terre Engineering
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Sa Terre Engineering
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Filing date
Publication date
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Priority to AT88904450T priority Critical patent/ATE77859T1/de
Publication of EP0367770A1 publication Critical patent/EP0367770A1/de
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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
    • D21J3/12—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of sheets; of diaphragms
    • 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
    • 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
    • D21J1/16—Special fibreboard
    • D21J1/20—Insulating board

Definitions

  • the present invention relates to insulating panels made from recycled raw materials or in the noble state consisting of cellulose fiber and agglomerated plant waste and more particularly straw and paper in bulk or in bales from selective crops.
  • the object of the invention is to provide the process as described above with new characteristics improving the various phases of the process and allowing to obtain a self-supporting, dry, non-brittle, felted, non-deformed material resistant to a compressive force of 160 KN / m2 with a maximum deformation of 10%.
  • the homogenized paste coming from a metering device is brought into a preforming machine on an endless fabric of the type stationery forming fabric, used successively to support and drain the dough during pressing and preforming and as a means of handling the preformed panel for its evacuation from the preforming machine.
  • the characteristic of the process is that the preformed panel is introduced into a double-sided percussion tunnel oven, the hot air being blown on both sides of the panel to be forced and very uniformly dried at a temperature between 185 ° C and 200 ° C.
  • the panel dried and automatically calibrated, covered on each face with glue and a layer of cardboard, is introduced into a heating press which simultaneously hardens the glue and achieves a knockout on the perimeter of the panel .
  • a panel according to the invention is produced from, for example, the following materials: straw, paper in bulk or in bales, mains water and draining water, recycled chips from calibration and machining.
  • the pulp is prepared in a pulper, homogenized and then sent to a doser feeding a preformer 1, the movable plate 2 of which overcomes an endless forming fabric 3, of the stationery forming fabric type.
  • the movable plate 3 actuated by jacks, slides downwards until the required pressure, of the order of 1.1 kg / cm2 to 4 kg / cm2, is reached.
  • the canvas 3 is used to support the dough and to drain it during pressing and preforming and also as a means of handling the preformed panel to evacuate it from the preformer and quickly transfer it to a conveyor 4 at two speeds by the through a 4 ′ elevator-descender.
  • the fabric 3 is driven by cylinders 1 ′ allowing, by an appropriate means, to adjust its running and its centering. These cylinders 1 ′ are provided with a cleaning system by scraping and spraying water. In order to distribute the compression stresses on the forming fabric 3, an intermediate perforated sheet 3 ′ is fixed to the attached grid of the preformer 1 and said fabric 3 slides over it.
  • the two-speed conveyor 4 slowly introduces the preformed panel into the tunnel oven 5, equipped with several stage conveyors allowing production on several parallel levels 6.
  • the drying in the oven is carried out under very precise repetitive conditions aimed at eliminating a well-defined percentage of water in the preformed panel of the order of 65% to 75% relative to the total weight of the cake .
  • This water after drying, leaves a quantity of air cavities giving the panel its thermal and acoustic qualities as well as its felted rigidity.
  • the continuous oven operates at a temperature between 185 ° C and 200 ° C and the hot air is distributed on both sides of the panel in a forced and very uniform manner at a speed between 13 m / sec and 18 m /dry.
  • the drying time will depend on the thickness of the panel.
  • the conditions required for drying make it possible to obtain an optimal treatment of the material and to preserve its qualities throughout the manufacturing.
  • the dry panels are unloaded from a two-speed conveyor 7 (elevator-descender 7 ′) automatically on pallets, or else they are introduced directly by a belt conveyor 8 into a double-sided grader 9, where the panel is calibrated and sanded automatically.
  • the calibrated panel is then sent to a palletizer, or else to the sizing 10 and to the covering 11 by a layer of cardboard on each face before being introduced into a heating press 12, which makes the glue harden. Simultaneously, a knockout on the perimeter of the panel is carried out in this heating press 12.
  • the edges are thinned by compression in the form of a chamfer with a width of 4 cm to 6 cm and a depth of 2 mm to 4 mm on the four sides of the panel. This allows the user to join the joints of the panels always in a tight and solid manner using a strip of fiberglass glued into the hollow created by the chamfers of two juxtaposed panels.
  • the finishing is then done perfectly using filling and finishing plaster.
  • FIG. 2 The embodiment of the chamfer in the heating press 12 intended to bond the final coating of the panel is shown in FIG. 2 showing the fixed heating plate 13 with shim 14, the mobile heating plate 15 mounted on hydraulic cylinders 16 and provided with a counterform 17 for the chamfer, the panel 18 with the adhesive 19 and the coating 20.
  • the thinning of the edges of the panel and the polymerization of the adhesive for bonding the coating are carried out in a single hot pressing operation.
  • the panel On leaving the heating press, the panel is sawn square on all four sides, put on a pallet and stored.
  • cellulose is meant either cellulose from old paper mixed from selective crops, defibrated with water in a conventional pulper to form a pulp, or cellulose produced from plants such as papyrus, bagasses of sugar cane , wood, banana leaves and all fibrous plants of the same type, defibrated to form a paste.
  • vegetable waste plant materials considered as manufacturing residues, such as coffee parch, bran, rice husk and all other grain husks, grain and rice flakes, sawdust and wood shavings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Paper (AREA)
  • Building Environments (AREA)
  • Refrigerator Housings (AREA)

Claims (6)

1. Verfahren zur Herstellung von thermischen und akustischen Isolierglatten, die ausgehend von Recycling-Rohstoffen oder hochwertigen Rohstoffen hergestellt werden, die aus Cellulosefasern und agglomerierten pflanzlichen Abfällen bestehen, bei denen die Rohstoffe bereitgestellt werden, ein Brei hergestellt und homogenisiert wird und die Tafeln vorgeformt und getrocknet werden, wobei der von einem Dosierer bereitgestellte homogenisierte Brei in einer Vorformmaschine (1) auf ein endloses Formgewebe (3) aufgebracht wird, wie es als Formgewebe für Papierwaren verwendet wird, welches nacheinander als Unterstützung und zum Abtropfen des Breis beim Pressen und Vorformen dient und als Handhabungsmittel für die vorgeformte Tafel dient, um diese aus der Vorformmaschine (1) herauszubewegen, dadurch gekennzeichnet, daß die vorgeformte Tafel in einen Zweiseitenbehandlungs-Tunnelofen (5) gefördert wird und Heißluft auf die beiden Flächen der Tafel geblasen wird, um diese zwangsweise und sehr gleichförmig auf eine Temperatur aufzuheizen, die zwischen 185° C und 200° C liegt.
2. Verfahren zur Herstellung von Isoliertafeln gemäß Anspruch 1, dadurch gekennzeichnet, daß das Vorformen in einem einzigen Arbeitsschritt bei einem Druck von 1,1 kg/cm2 bis 4 kg/cm2 durchgeführt wird.
3. Verfahren zur Herstellung von Isoliertafeln nach Anspruch 1, dadurch gekennzeichnet, daß das endlose Formgewebe (3) durch Walzen (1′) angetrieben wird, welche ein Regeln der Laufgeschwindigkeit und der Bandzentrierung gestatten, und auf einem Lochblech (3′) gleitet, um die Kompressionsbelastungen auf das Band (3) zu verteilen.
4. Verfahren zur Herstellung von Isoliertafeln nach Anspruch 1, dadurch gekennzeichnet, daß die vörgeformte Tafel vor dem Trocknen einen Wassergehalt von größenordnungsmäßig 65 bis 75 % bezogen auf das Gesamtgewicht des Kuchens aufweist.
5. Verfahren zur Herstellung von Isoliertafeln nach Anspruch 1, dadurch gekennzeichnet, daß die Heißluft im Tunnelofen (5) mit einer Geschwindigkeit verteilt wird, die zwischen 13 m/sec und 18 m/sec liegt.
6. Verfahren zur Herstellung von Isoliertafeln nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Tafel (18), die getrocknet, in einer Zweiseiten-Kalibrierpresse automatisch kalibriert und auf jeder ihrer Flächen mit Klebstoff (19) und mit einer Kartonschicht (20) beschichtet worden ist, in eine Heizpresse (12) geführt wird, in welcher der Klebstoff polymerisiert wird, um ein Ankleben der Deckschicht zu bewirken, und gleichzeitig eine Dickenverminderung oder Anfasung vorgenommen wird, die sich über den Rand der Tafel erstreckt, indem auf der beweglichen Heizplatte (15) der Presse (12) eine Gegenform (17) angeordnet wird.
EP88904450A 1988-04-29 1988-04-29 Verfahren zur herstellung von thermischen, akustischen und schallabsorbierenden isolierplatten Expired - Lifetime EP0367770B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88904450T ATE77859T1 (de) 1988-04-29 1988-04-29 Verfahren zur herstellung von thermischen, akustischen und schallabsorbierenden isolierplatten.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BE1988/000013 WO1989010449A1 (fr) 1988-04-29 1988-04-29 Procede de fabrication de panneaux isolants, thermiques et acoustiques, et absorbants phoniques et panneaux realises suivant le procede

Publications (2)

Publication Number Publication Date
EP0367770A1 EP0367770A1 (de) 1990-05-16
EP0367770B1 true EP0367770B1 (de) 1992-07-01

Family

ID=3883184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88904450A Expired - Lifetime EP0367770B1 (de) 1988-04-29 1988-04-29 Verfahren zur herstellung von thermischen, akustischen und schallabsorbierenden isolierplatten

Country Status (8)

Country Link
EP (1) EP0367770B1 (de)
JP (1) JPH03500552A (de)
AT (1) ATE77859T1 (de)
AU (1) AU615452B2 (de)
DE (1) DE3872522T2 (de)
PT (1) PT92083A (de)
RU (1) RU2015237C1 (de)
WO (1) WO1989010449A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPN200895A0 (en) * 1995-03-28 1995-04-27 Griffiths, Alan Lyle Insulation, and method and machine for forming same
FR2867263B1 (fr) * 2004-03-02 2006-05-26 Solaronics Irt Installation de sechage pour une bande defilante, notamment pour une bande de papier
RU2469157C2 (ru) * 2011-02-22 2012-12-10 Евгений Владимирович Левин Многослойная строительная панель и способ ее изготовления

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1536163A (en) * 1919-10-07 1925-05-05 Agasote Millboard Co Apparatus for making sheets of pulp and similar articles
US1570335A (en) * 1924-11-19 1926-01-19 Henry B Cobb Machine for making wall board, etc.
CH155800A (de) * 1931-09-10 1932-07-15 Siempelkamp Ewald Verfahren und Einrichtung zur Gewinnung von trockenen Platten aus einer nassen Bahn aus Holzstoff, Zellstoff, Zellulose und dergleichen.
US3748222A (en) * 1971-10-20 1973-07-24 Wood Processes Process for making a fiber overlay web for a composite board
LU83899A1 (fr) * 1982-01-26 1983-09-02 Terre Asbl Panneau isolant
US4622190A (en) * 1983-02-28 1986-11-11 Masonite Corporation Method of making wet process panels of composite wood material with semi-matching contoured pressure plates

Also Published As

Publication number Publication date
DE3872522T2 (de) 1992-12-03
WO1989010449A1 (fr) 1989-11-02
ATE77859T1 (de) 1992-07-15
JPH03500552A (ja) 1991-02-07
DE3872522D1 (de) 1992-08-06
AU1806588A (en) 1989-11-24
PT92083A (pt) 1991-06-25
AU615452B2 (en) 1991-10-03
EP0367770A1 (de) 1990-05-16
RU2015237C1 (ru) 1994-06-30

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