EP3169497B1 - Method and apparatus for producing a gypsum plasterboard - Google Patents

Method and apparatus for producing a gypsum plasterboard Download PDF

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Publication number
EP3169497B1
EP3169497B1 EP14739164.3A EP14739164A EP3169497B1 EP 3169497 B1 EP3169497 B1 EP 3169497B1 EP 14739164 A EP14739164 A EP 14739164A EP 3169497 B1 EP3169497 B1 EP 3169497B1
Authority
EP
European Patent Office
Prior art keywords
roll
rolls
sheet
forming table
gypsum
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.)
Active
Application number
EP14739164.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3169497A1 (en
Inventor
Vincent BREDOUX
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.)
Knauf Gips KG
Original Assignee
Knauf Gips 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 Knauf Gips KG filed Critical Knauf Gips KG
Priority to PL14739164T priority Critical patent/PL3169497T3/pl
Publication of EP3169497A1 publication Critical patent/EP3169497A1/en
Application granted granted Critical
Publication of EP3169497B1 publication Critical patent/EP3169497B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0092—Machines or methods for applying the material to surfaces to form a permanent layer thereon to webs, sheets or the like, e.g. of paper, cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
    • B28B3/123—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material in moulds or on moulding surfaces moving continuously underneath or between the rollers, e.g. on an endless belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
    • B28B3/126—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material passing directly between the co-operating rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00—Producing 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
    • B28B5/02—Producing 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
    • B28B5/021—Producing 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 the shaped articles being of definite length
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/041—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres composed of a number of smaller elements, e.g. bricks, also combined with a slab of hardenable material
    • E04C2/042—Apparatus for handling the smaller elements or the hardenable material; bricklaying machines for prefabricated panels

Definitions

  • the invention relates to a method and an apparatus for producing a gypsum plasterboard.
  • EP 0 759 840 B1 describes an apparatus and a method for producing a gypsum plasterboard including a gypsum core.
  • a gypsum slurry flows and spreads out across a first sheet, forming a gypsum core.
  • a second cover sheet is then laid over the core.
  • the second cover sheet is unreeled from a supply roll and passed under an idler roll which guides the cover sheet, smoothes the upper surface of the slurry, and reduces the slurry thickness to a desired value.
  • a coating apparatus is mounted in an area between two decks and comprises a coating roll and a pressure roll adjacent to each other.
  • US 1 953 589 discloses a method in accordance with the preamble of claim 1 and an apparatus for producing a gypsum plasterboard, comprising at least a forming table and two, a first and a second, opposing rolls, wherein the first roll is integrated in the forming table.
  • a method for producing a gypsum plasterboard comprises the steps of:
  • a core idea of the present invention lies in the two opposing rolls that crush at least the largest particles. Thereby, it can be avoided that a cover sheet (paper) breaks and the production process must be stopped. This leads to a more efficient and less expensive production of gypsum plasterboards.
  • the first (cover) sheet is a paper sheet.
  • other embodiments e.g. fleece sheets or the like are possible.
  • the gypsum slurry is arranged between the first sheet and a second sheet (preferably before step b)).
  • the gypsum slurry may form (one) core layer.
  • the first and second sheet should define outer layers with one or more core layers of gypsum in between.
  • the second sheet is preferably a paper sheet (or alternatively, a fleece sheet or the like).
  • the solid particles are crushed after the combination of first sheet, one or more core layer and the second sheet. All in all, an efficient production and in particular crushing of solid particles is achieved.
  • At least one of the first and second roll is moveable or moved towards or away from the (corresponding) opposing roll.
  • a lower roll is fixed.
  • an upper roll may be moveable or moved towards or away from the lower roll.
  • the two rolls are placed in a lamination zone (immediately) before a stabilization zone.
  • lamination zone preferably means an area of the production zone in which the first (and optionally the second sheet) are combined with the gypsum slurry.
  • stabilization zone preferably means an area of the production zone in which the combined layers (first sheet, at least one gypsum slurry and optionally second sheet) stabilize (in particular harden) without a (substantial) change of the form (in particular thickness).
  • the two rolls are placed so that the breaking of solid particles happens before the stabilization zone is entered, i.e. before the (substantially) final thickness is achieved. Hence, it can be efficiently avoided that too large solid particles result in damaged (cover) sheets.
  • At least one of the two rolls may be driven by a traction of the first and/or second sheet.
  • the first roll may essentially be driven by the first (cover) sheet.
  • the second roll may be (essentially) driven by the second (cover) sheet.
  • the two rolls are passive elements (with respect to the actuation of their rotation) and are (only) provided in order to break the particles (and optionally in order to guide the cover sheets in a certain direction).
  • the structure of the rolls may be very simple which enhances the efficiency of the method.
  • the first and/or second roll may have a diameter of at least 100 mm, preferably at least 150 mm, further preferably at least 170 mm. With such a diameter, the breaking (crushing) of solid particles is very efficient and reliable.
  • rotational axes of the two rolls are arranged in the same (vertical) plane.
  • breaking of particles is very reliable and efficient.
  • the first roll is integrated in a first (lower) forming table.
  • the term "forming table” means preferably an element which defines the (final) thickness (in general: shape) of the gypsum plasterboards.
  • the second roll is integrated in a second (upper) forming table. Portions of the first and/or second table on an entry side of the two opposing rolls are preferably angled in relation to each other. Portions of the first and/or second table on an exit side of the rolls may be parallel to each other. In particular, the entry side of the two opposing rolls forms a funnel. Such funnel structure brings the one or two sheets together with the slurry so that after the combined layers have passed the two opposing rolls, a predefined thickness of the plasterboards is achieved.
  • a portion of the first and/or second table on an entry side of the rolls may have an angle of at least 5%, further preferably at least 10% and/or less than 30%, further preferably less than 25% (with respect to a horizontal plane).
  • the last portion of a funnel defined by portions of the first and second table on an entry side of the two opposing rolls is formed by the two opposing rolls. For example, at least the last 6 mm of the lamination is done by the two opposing rolls.
  • a plate thickness of the final plasterboards may be less than 1.0 times, preferably less than 0.8 times, further preferably less than 0.7 times the diameter of the (largest) particles within the slurry.
  • the "diameter" of particles should preferably be understood as “sieve diameter”.
  • the "sieve diameter” should preferably be defined by a minimum distance between two parallel borders of a virtual sieve through which the corresponding particle may just pass (wherein the corresponding particle would not pass a sieve with two parallel borders having a smaller distance).
  • the diameter is for example the diameter of the spheres.
  • the diameter is the length of an edge of the cube.
  • the particle diameter may be calculated by the maximum diameter of the corresponding particle (being defined by the two points on the surface of the particle having the maximum distance from each other).
  • a minimum distance between the two rolls may be less than 1.0 times, preferably less than 0.8 times, further preferably less than 0.7 times the diameter of the largest particles within the slurry.
  • a plate thickness of the final plasterboard may be less than 18 mm, preferably less than 12 mm, further preferably less than 10 mm.
  • the present invention allows to produce comparatively thin plasterboards even under the use of a gypsum slurry containing comparatively large particles.
  • a minimum distance between the two rolls may be less than 20 mm, preferably less than 14 mm, further preferably less than 12 mm. Thereby, it is efficiently possible to break large particles.
  • At least one of the sheets, preferably the second (upper) sheet, is guided by at least one idler roll provided in addition to the two opposing rolls. Further preferably, the idler roll is arranged at an entry end of the second (upper) table.
  • Idler rolls in order to guide a sheet within a gypsum plasterboard production are (as such) known.
  • the combination of an idler roll with one of the two opposing rolls on the same side of the gypsum layer allows an efficient guidance and breaking of larger particles.
  • the idler roll is arranged at an entry end of the second (upper) table, the overall disturbance of the corresponding sheet (paper sheet) is minimised.
  • an apparatus for producing a gypsum plasterboard in particular according to the above described method comprises a first forming table and a second forming table and two (a first and a second) opposing rolls for breaking at least a proportion of solid particles within a gypsum slurry being deposited on a sheet, in particular paper sheet, wherein at least the first roll is integrated in the forming table and the second roll is integrated in the second forming table wherein the first forming table and the second forming table each comprise an angle portion which are angled in relation to each other which define together with the roles a funnel.
  • a (minimum) distance between the first and second roll is preferably less than 20 mm, further preferably less than 15 mm.
  • Both opposing rolls may be integrated in a corresponding forming table.
  • the first roll may be integrated in a first (lower) forming table.
  • the second (upper) roll may be provided in a second (upper) forming table.
  • minimum distance preferably means the minimum of the distance if the distance as such is variable. In any case, the (minimum) distance between the two opposing rolls may be more than 5 mm, preferably more than 8 mm.
  • At least one of the first and second roll may be moveable towards or away from the (corresponding) opposing roll.
  • a maximum distance may be 0.5, preferably 2 times the minimum distance.
  • the distance may vary between 5 mm and 30 mm, preferably 10 mm and 20 mm.
  • the lower roll may be fixed.
  • an upper roll may be moveable towards or away from the other roll.
  • At least one of the two opposing rolls is freely rotatable so that it can be driven by a traction of the first and/or second sheet.
  • the first and/or second roll has a diameter of at least 100 mm, preferably at least 150 mm, further preferably at least 170 mm. Rotational axes of the two rolls are preferably arranged in the same (vertical) plane.
  • At least one idler roll may be provided in addition to the two opposing rolls for guiding at least the first and/or second sheet, preferably wherein the idler roll is arranged at an entry end of the second (upper) table.
  • a system comprising an apparatus of the pre-described kind and a gypsum slurry with solid particles.
  • a minimum distance between the two opposing rolls is less than a diameter of the largest solid particles.
  • a use of the apparatus of the pre-described kind and/or a use of the system of the pre-described kind is proposed, for breaking particles in a gypsum slurry within a process for producing gypsum plasterboards, in particular according to the pre-described kind.
  • Figs. 1 and 2 show an embodiment of a first (lower) forming table 10 and a second (upper) forming table 11 of an apparatus for producing a gypsum plasterboard.
  • the apparatus may comprise further components (e.g. mixers for the gypsum slurry or transport means or cutting means etc., not being shown in the figures).
  • Two (a first 12 and a second 13) opposing rolls are provided.
  • the first roll 12 is integrated in the first table 10.
  • the second roll 13 is integrated in the second table 11.
  • an idler roll 15 is provided at an entry end 14 of the second table 11.
  • the idler roll 15 (compare Fig. 3 ) guides a second (cover) sheet 16 of paper so that the second sheet 16 is guided between the forming tables 10 and 11.
  • a first sheet (of paper) 17 moves along the first table 10 (compare Fig. 3 ).
  • the arrangement of Fig. 3 may be divided in a lamination zone 19 and a stabilization zone 20.
  • a gypsum slurry 21 is arranged between and bonded with the (cover) sheets 16, 17.
  • the lower table 10 comprises an angled portion 22.
  • the upper table 11 comprises an angled portion 23.
  • the angled portions 22 and 23 define together with the rolls 12, 13 a funnel 24 so that the progressing sheets 16, 17 approach each other in order to form a gypsum plasterboard.
  • the opposing surfaces of the forming tables 10 and 11 are parallel to each other so that the thickness of the gypsum layer between the sheets is constant and may define a gypsum plasterboard with its final thickness.
  • the gypsum slurry 21 comprises solid particles, wherein (exemplarily) one solid particle 26 is shown.
  • the solid particle 26 is still far away from the two opposing rolls 12, 13. However, together with the movement of the gypsum slurry 21 in the direction of the two opposing rolls (in Fig. 3 to the left), the particle 26 approaches a space 27 between the two opposing rolls. Because the diameter of the particle 26 is larger than a distance between the two opposing rolls, the particle is compressed by the two opposing rolls 12, 13 and finally breaks (as shown in Fig. 5 ). Therefore, the broken particle 26 does not disturb the further process, e.g. break the sheets 16, 17.
  • Both rolls 12, 13 may be fixed to the corresponding forming table 10, 11.
  • the upper table 11 may be moveable in a vertical direction (together with roll 13).
  • the two rolls, 12, 13 are placed (just) before the stabilization zone 20 within the lamination zone 19.
  • the diameter of the rolls may be (approximately) 150 mm (or could be larger).
  • the rolls must have a sufficient resistance in order to be able crush (break) the particles. The crushing strength is therefore dependent on the resistance of the rolls 12, 13 and their geometry (in particular diameter).
  • both rotation axes of the rollers are (precisely) in the same vertical plane and parallel.
  • the method and apparatus of the present invention is exceptionally advantageous if comparatively thin plasterboards should be produced.
  • the inventive solution is, in this regard, simpler and more efficient than known solutions (e.g. optimisation of the mixer, a production stop and raising the forming table when a paper break is detected with a sensor, chemistry in the mixer or the use of a grid after the outlet pipes are connected to the mixer).
  • the present method and apparatus permits the reduction in size of any solid particles (lumps) so that lumps which are initially larger than a distance between the two (cover) sheets 16, 17 become smaller. By the rolls, a very high crushing strength may be achieved.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
EP14739164.3A 2014-07-15 2014-07-15 Method and apparatus for producing a gypsum plasterboard Active EP3169497B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14739164T PL3169497T3 (pl) 2014-07-15 2014-07-15 Sposób i urządzenie do wytwarzania płyty gipsowo-kartonowej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/065133 WO2016008511A1 (en) 2014-07-15 2014-07-15 Method and apparatus for producing a gypsum plasterboard

Publications (2)

Publication Number Publication Date
EP3169497A1 EP3169497A1 (en) 2017-05-24
EP3169497B1 true EP3169497B1 (en) 2021-09-01

Family

ID=51178930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14739164.3A Active EP3169497B1 (en) 2014-07-15 2014-07-15 Method and apparatus for producing a gypsum plasterboard

Country Status (12)

Country Link
EP (1) EP3169497B1 (pl)
JP (1) JP6637024B2 (pl)
CN (1) CN106470812A (pl)
AU (1) AU2014401105B2 (pl)
BR (1) BR112017000590B1 (pl)
CO (1) CO2017000909A2 (pl)
ES (1) ES2895170T3 (pl)
PL (1) PL3169497T3 (pl)
PT (1) PT3169497T (pl)
RU (1) RU2667399C2 (pl)
UA (1) UA118229C2 (pl)
WO (1) WO2016008511A1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111347547A (zh) * 2020-04-01 2020-06-30 太仓北新建材有限公司 一种石膏料浆的挤压装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1489693A (en) * 1922-09-25 1924-04-08 United States Gypsum Co Machine and method for making hardened-edged plaster board
US1597623A (en) * 1924-12-24 1926-08-24 Joseph E Schumacher Fabrication of plaster board
US1953589A (en) * 1932-01-13 1934-04-03 United States Gypsum Co Uniting dissimilar materials
JPS6048306A (ja) * 1983-08-26 1985-03-16 太平洋セメント株式会社 石膏ボ−ドの寸法形状制御方法
JPH0847911A (ja) * 1994-08-08 1996-02-20 Kubota Corp 板状体形成方法、及び、形成装置
JP3315935B2 (ja) * 1998-08-28 2002-08-19 吉野石膏株式会社 石膏ボードの製造方法及び装置
US6524679B2 (en) * 2001-06-06 2003-02-25 Bpb, Plc Glass reinforced gypsum board
JP4503628B2 (ja) * 2002-03-27 2010-07-14 吉野石膏株式会社 石膏ボード及び該石膏ボードの製造方法
TWI265087B (en) * 2002-03-27 2006-11-01 Yoshino Gypsum Co Plaster board and method of fabricating the plaster board
JP2005035866A (ja) * 2003-06-30 2005-02-10 Yoshio Otsu 発泡材、発泡ボードおよび発泡ボードの製造方法
CN2707458Y (zh) * 2004-07-12 2005-07-06 张进国 一种石膏装饰板连续成型机
NZ571510A (en) * 2006-03-23 2012-05-25 Hercules Inc Improved paper for gypsum wallboard
CN102350728B (zh) * 2011-09-24 2013-05-08 湖南天牌实业有限公司 大规格纤维石膏板成型装置
WO2013156083A1 (en) * 2012-04-20 2013-10-24 Metso Minerals (Sweden) Ab Feeder aparatus and method for feeding material to a high pressure roller crusher

Also Published As

Publication number Publication date
WO2016008511A1 (en) 2016-01-21
BR112017000590A2 (pt) 2018-01-23
PL3169497T3 (pl) 2022-01-03
UA118229C2 (uk) 2018-12-10
RU2667399C2 (ru) 2018-09-19
RU2017104416A3 (pl) 2018-08-15
AU2014401105B2 (en) 2020-03-26
PT3169497T (pt) 2021-10-27
RU2017104416A (ru) 2018-08-15
JP6637024B2 (ja) 2020-01-29
CO2017000909A2 (es) 2017-04-20
JP2017527463A (ja) 2017-09-21
CN106470812A (zh) 2017-03-01
AU2014401105A1 (en) 2017-01-12
BR112017000590B1 (pt) 2022-07-19
ES2895170T3 (es) 2022-02-17
EP3169497A1 (en) 2017-05-24

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