EP0143939A1 - Procédé pour la production de panneaux pris dans le plâtre - Google Patents

Procédé pour la production de panneaux pris dans le plâtre Download PDF

Info

Publication number
EP0143939A1
EP0143939A1 EP84111582A EP84111582A EP0143939A1 EP 0143939 A1 EP0143939 A1 EP 0143939A1 EP 84111582 A EP84111582 A EP 84111582A EP 84111582 A EP84111582 A EP 84111582A EP 0143939 A1 EP0143939 A1 EP 0143939A1
Authority
EP
European Patent Office
Prior art keywords
gypsum
plaster
particles
fleece
boards
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Withdrawn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
EP84111582A
Other languages
German (de)
English (en)
Inventor
Günter Dipl.-Holz. Bücking
Jochen Dipl.-Kfm. Hübner
Günter Dr. Schwarz
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.)
Bison Werke Baehre and Greten GmbH and Co KG
Original Assignee
Bison Werke Baehre and Greten GmbH and Co KG
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 Bison Werke Baehre and Greten GmbH and Co KG filed Critical Bison Werke Baehre and Greten GmbH and Co KG
Publication of EP0143939A1 publication Critical patent/EP0143939A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/52Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/02Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type

Definitions

  • the invention relates to a process for the production of gypsum-bonded boards, in which an endless, lignocellulosic and / or cellulose-containing and / or inorganic particles, powdery gypsum and setting water for the gypsum-containing nonwoven is formed on a continuously moving base, which presses into finished boards becomes.
  • the wetting device is designed as a suction wetting device with nebulizing nozzles and is provided with a control device which can be set for wetting that is free of water residues.
  • the pressing and dewatering device consists of a mobile plate press, which has a dewatering belt with drainage spaces for dewatering water that is also endlessly guided over deflection rollers under the sieve belt.
  • the known system is not free from disadvantages.
  • a uniform build-up of the material to be pressed which significantly influences the technological properties of the finished plates to be produced, is disturbed, especially since at least smaller gypsum and / or fiber particles inevitably get into the suction flow and have to be separated out of it again by means of suitable measures.
  • the excess water to be discharged causes wastewater and sewage problems that pollute the environment or their solution requires high investment and operating costs.
  • the present invention has for its object to provide a method of the type defined, which is energy-saving and environmentally friendly and with which it is possible to produce uniformly constructed plates with smooth surfaces.
  • the method according to the invention is therefore particularly characterized by a comparatively low energy consumption and a high degree of environmental friendliness, whereby the documents can also be reused in the production process after the panels have been removed.
  • a free-flowing particle mixture is formed into a fleece exclusively by windsifting scattering on the flat and air-impermeable underlays. This is because the pressed fleece then has an improved bending stress in addition to smooth surfaces.
  • a sensible combination for fleece shaping is to first sprinkle a lower cover layer on the underlays in a windsifting manner, then pouring a middle layer onto the previously formed cover layer separately in the fleece shape and finally sprinkling a further upper cover layer on the middle layer in fleece form in a windsifting manner .
  • Another particularly preferred possibility of the process according to the invention is that as exothermic
  • hardening binders suitable chemical gypsum made from raw phosphate, from which flue gas desulfurization and the like can be used even in only partially cleaned or even unpurified form, with economically at least acceptable production capacities.
  • the time sequence of the hydration process with the start of stiffening, stiffening and end of hydration can be optimally controlled either by acceleration means or by deceleration means which are known per se.
  • the start of stiffening coincides with the pressing of the respective package to the nominal thickness in the press and the package is only opened when the stiffening or, preferably, the hydration has ended, it can be seen that the gypsum-bonded plates obtained are maximally manipulative and moisture-resistant.
  • a preferred embodiment of the method according to the invention still consists in shredding annual plants, such as e.g. Use straw, flax, cotton stems and the like, which delay the setting process of the plaster.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Credit Cards Or The Like (AREA)
  • Manufacturing Optical Record Carriers (AREA)
EP84111582A 1983-10-05 1984-09-27 Procédé pour la production de panneaux pris dans le plâtre Withdrawn EP0143939A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833336243 DE3336243A1 (de) 1983-10-05 1983-10-05 Verfahren zum herstellen von gipsgebundenen platten
DE3336243 1983-10-05

Publications (1)

Publication Number Publication Date
EP0143939A1 true EP0143939A1 (fr) 1985-06-12

Family

ID=6211080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111582A Withdrawn EP0143939A1 (fr) 1983-10-05 1984-09-27 Procédé pour la production de panneaux pris dans le plâtre

Country Status (6)

Country Link
EP (1) EP0143939A1 (fr)
DE (1) DE3336243A1 (fr)
ES (1) ES536515A0 (fr)
FI (1) FI75517C (fr)
NL (1) NL8401036A (fr)
NO (1) NO843976L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5342566A (en) * 1990-08-23 1994-08-30 Carl Schenck Ag Method of manufacturing fiber gypsum board
US5637362A (en) * 1993-08-20 1997-06-10 Louisiana-Pacific Corporation Thin, sealant-coated, fiber-reinforced gypsum panel

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416824C2 (de) * 1984-05-07 1987-04-02 Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe Verfahren zum Herstellen von gipsgebundenen Formkörpern
DE3840718A1 (de) * 1988-12-02 1990-06-07 Baehre & Greten Verfahren zum herstellen von formkoerpern, insbesondere von platten
DE4300428A1 (en) * 1992-02-19 1993-08-26 Wilhelm Rusteberg Gypsum building material - contg. fibrous esp. waste material, used for boards, blocks and mouldings
DE4239033A1 (fr) * 1992-03-19 1993-09-23 Fraunhofer Ges Forschung
DE4323116C2 (de) * 1993-07-10 1997-03-20 Fraunhofer Ges Forschung Verfahren zur Regelung des Hydratationsverhaltens von Gips bei der Verbundwerkstoff-Herstellung
DE19715310A1 (de) * 1997-04-02 1998-10-08 Kschiwan Marlis Dämmende Baustoffmasse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109585B (de) * 1958-06-04 1961-06-22 Gerrit Jan Van Elten Vorrichtung zum Herstellen von Leichtbauplatten
CH399278A (de) * 1961-08-02 1966-03-31 Isotex Leichtbauplattenwerk Ka Verfahren und Vorrichtung zum Herstellen von Bauplatten, insbesondere Holzwolle- Zementplatten
DE1653280A1 (de) * 1966-06-23 1971-01-28 Schnitzler Dr Erwin Anlage zur Herstellung von Spanplatten,Faserplatten u.dgl.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1784657B2 (de) * 1968-09-02 1977-12-01 Ferma International Entwicklungswerk Fuer Rationelle Fertigbaumethoden Und Maschinenanlagen Gmbh & Co Kg, 7516 Karlsbad Verfahren zum kontinuierlichen Herstellen von Formkörpern, insbesondere von Platten, aus Gips und Fasern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109585B (de) * 1958-06-04 1961-06-22 Gerrit Jan Van Elten Vorrichtung zum Herstellen von Leichtbauplatten
CH399278A (de) * 1961-08-02 1966-03-31 Isotex Leichtbauplattenwerk Ka Verfahren und Vorrichtung zum Herstellen von Bauplatten, insbesondere Holzwolle- Zementplatten
DE1653280A1 (de) * 1966-06-23 1971-01-28 Schnitzler Dr Erwin Anlage zur Herstellung von Spanplatten,Faserplatten u.dgl.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5342566A (en) * 1990-08-23 1994-08-30 Carl Schenck Ag Method of manufacturing fiber gypsum board
US5637362A (en) * 1993-08-20 1997-06-10 Louisiana-Pacific Corporation Thin, sealant-coated, fiber-reinforced gypsum panel

Also Published As

Publication number Publication date
DE3336243A1 (de) 1985-05-02
NL8401036A (nl) 1985-05-01
ES8506492A1 (es) 1985-08-01
FI843682L (fi) 1985-04-06
ES536515A0 (es) 1985-08-01
FI75517C (fi) 1988-07-11
FI843682A0 (fi) 1984-09-20
FI75517B (fi) 1988-03-31
NO843976L (no) 1985-04-09

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): AT CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19851106

17Q First examination report despatched

Effective date: 19870515

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890331

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HUEBNER, JOCHEN, DIPL.-KFM.

Inventor name: BUECKING, GUENTER, DIPL.-HOLZ.

Inventor name: SCHWARZ, GUENTER, DR.