EP1858681A2 - Verfahren und vorrichtung zur herstellung beschichteter gipsplatten - Google Patents
Verfahren und vorrichtung zur herstellung beschichteter gipsplattenInfo
- Publication number
- EP1858681A2 EP1858681A2 EP06725118A EP06725118A EP1858681A2 EP 1858681 A2 EP1858681 A2 EP 1858681A2 EP 06725118 A EP06725118 A EP 06725118A EP 06725118 A EP06725118 A EP 06725118A EP 1858681 A2 EP1858681 A2 EP 1858681A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- gypsum board
- gypsum
- drying
- coated
- 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.)
- Granted
Links
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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
-
- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
Definitions
- the present invention relates to a method and an apparatus for producing coated plasterboard.
- gypsum boards Construction boards based on gypsum, hereinafter referred to as gypsum boards, are used in dry construction for the production of floors, walls and ceilings.
- the corresponding plates are manufactured industrially.
- stucco In gypsum plasterboard, stucco is typically mixed with water and various additives into a slurry and then poured onto a board web. Then a second board web is placed so that the plaster is enclosed before the setting of the two board webs. The strand is then passed over a binding band. During the time required for this, the stucco in the plate core binds to calcium sulfate dihydrate. The hardened strand is cut into plates by a suitable cutting device. This is followed by a drying process in which the excess water is removed.
- cardboard it is also possible to use alternative products for sheathing, such as glass fiber fleeces or textile fleeces.
- gypsum fiberboards which are typically made of gypsum and cellulose loose fibers.
- stucco and cellulose fibers are intimately mixed. This mixture is added to water for the
- the joints between the plates are usually filled, the resulting walls or ceilings primed and painted or papered. Painting or wallpapering is used as decorative on designated. Frequently, primers or wallpapers are applied beforehand.
- the edges of the plates are usually pre-primed manually.
- EP 0 777 800 B1 describes the use of a cardboard with a cover layer which is already prepared so that it can be decorated without pretreatment.
- EP 1 076 137 A2 relates to a lining paper, which receives a decorative surface design by printing and is then used to produce a plasterboard.
- US 2003/0113572 describes a special coating composition for a gypsum board containing a binder, soy protein and two or more Pigments. Although it is generally described in this document that the coating can take place before or after the stayer dryer, it is preferred that the coating composition is applied before the stayer dryer. Investigations of the mass described there have shown that it has drying times of well over 10 minutes and only dries well when used in front of the floor dryer.
- WO 99/10151 relates to a material for the production of inorganic phosphate-based materials. It is described there on page 7 that a corresponding method for plasterboard is not applicable.
- the present invention has the object to develop a method and an apparatus with which the disadvantages of the prior art can be overcome.
- a coating in the sense of this application comprises both the application of primers and of means for decoration, such as colors.
- Gypsum boards are dried in a continuous production process and, after passing through the drying station, trimmed, stacked and packed and / or provided with a strapping as transport security. Unstacking already stacked plates to further process them is generally a costly process that would reduce the production capacity of such equipment.
- the invention therefore provides a process for the production of a coated gypsum board, comprising in one operation the following steps in the following order: a) forms a plasterboard; b) drying the gypsum board in a drying apparatus; c) coating the gypsum board by spraying with a coating agent following drying; d) stacking the gypsum boards,
- the step of coating the gypsum boards is included in the manufacturing process and immediately follows the drying process.
- the still warm plate is sprayed with a coating agent.
- the residual heat of the plate surprisingly accelerates the drying of the coating agent so much that the coating agent is dried sufficiently until the step of stacking the gypsum boards in order to prevent sticking of the stacked plates to one another.
- the step of forming the gypsum board includes the steps necessary to make the gypsum board until it enters the dryer. Herein may be included steps of setting or dimming.
- the drying of the gypsum board and the coating there is no stacking or transfer to another workstation between the drying of the gypsum board and the coating, but the drying is followed directly by the coating. Subsequently, the gypsum board is stacked with other plates to form a plasterboard stack.
- the inventive method is suitable for both plasterboard and gypsum fiber boards.
- the spray areas can overlap.
- several plates are made in parallel and run together from the drying device at the same time. These are then coated simultaneously by a correspondingly larger number of spray nozzles.
- Particularly suitable spray nozzles are wide jet spray nozzles.
- airless spray systems Drucksprühsysteme
- the nozzles do not spray on the plate surface at 90 °, but slightly obliquely on the plate surface, the nozzles being arranged to spray with or against the transport direction of the plates.
- the angle between the spraying direction of the nozzles and the disk surface is 20 to 80 °, more preferably 30 to 60 °.
- Typical distances are in the range of 10 to 60 cm, more preferably in the range of 20 to 40 cm.
- the coating composition preferably has a water content in order to avoid emissions by evaporating solvents, etc.
- Preferred water contents are at least 30% by weight, more preferably at least 40% by weight and even more preferred water contents are at least 80% by weight or at least 95% by weight, in particular in primers.
- an application of coating material in an amount of 20 to 100 g / m 2 (based on the dry weight of the coating agent).
- a period of less than 60 seconds, more preferably less than 40 seconds, and most preferably less than 30 seconds, is between the end of the coating and the stacking of the gypsum board.
- the said time is the time after which the coated side of the produced coated gypsum board makes contact with another surface, typically by depositing another gypsum board on it during stacking.
- the applicable coating compositions are diverse. It can be used e.g. water-repellent coating agents, water-barrier coating agents, wallpaper replacement primer, paints, impregnating agents, anti-slipping agents, liquid films and / or strength-increasing agents.
- gypsum board has a Cobb value of about 100 to 200 g / m 2 for a two-hour exposure according to ASTM C473-87a. Further preferred values are in the range of 130 to 160 g / m 2 . Since the gypsum core is already dried at the time of coating, it is irrelevant whether the coating used hampers the water leaving the surface. It is therefore also possible to use monomers for the coating, which subsequently polymerize. Also agents that consolidate the surface, such as one-component resins, can be used.
- a further drying step is provided to accelerate the drying.
- a drying by infrared radiation, hot air or the like can be used.
- such a further drying step is not provided.
- the plates thus obtained can - as in the usual way - be further processed, for example by punching, bending, slitting or trimming.
- This subsequent processing step can likewise be integrated into the production process and be carried out before the gypsum boards are stacked. However, it is also possible to spend the plates after stacking to another station and to do there further steps. Of course, it is also possible to integrate part of the post-processing into the production process and to carry out further post-processing later. Typical post-processing steps serve for the production of chamfer edges, step seam edges, etc.
- the gypsum boards are coated on at least one edge.
- coating composition is applied to this edge region.
- the joint strength is increased.
- Corresponding processing can be connected directly to the processing of the edge by means of bundler or milling devices.
- a treatment step may follow, in which edges of the stacked th gypsum boards are coated by spraying with a coating material, in particular by a primer. Also, this can increase the edge strength.
- the gypsum boards are advantageously used together with a putty compound to joint the joints formed between the boards, which has an identical color as the coating, so that even after grouting the boards a uniform appearance of the walls is achieved.
- the coating is synchronized with the transport of the plates, i.
- the spraying is interrupted as soon as one plate leaves the spraying area and resets when the next plate reaches the spraying device.
- the device according to the invention has a drying device for drying one, in particular several gypsum boards.
- a drying device for example, a multi-floor dryer can be provided. Upstream of the drying device can be provided for serving the plasterboard gypsum board forming device.
- Subordinated to the drying device is a conveying device, through which the gypsum boards are conveyed after drying to a stacking device. With the help of the stacking device, the gypsum boards are stacked on pallets or the like, for example.
- a coating device for coating the gypsum boards immediately after the drying device, by means of which the still warm gypsum boards are coated, the coating being carried out in particular as described above with reference to the method according to the invention.
- the coating is thus preferably carried out during the transport of the gypsum board from the drying device to the stacking device.
- a deflection device is preferably provided in order to avoid fouling of conveying elements of the conveying device, such as a conveyor belt. By deflecting the conveying element is arranged or deflected in the loading layer region at a distance from the gypsum board.
- the device according to the invention is preferably developed further as described above with reference to the method according to the invention.
- FIG. 1 shows a schematic side view of a first preferred embodiment of the invention
- Figure 2 is a schematic side view of a second preferred embodiment of the invention.
- FIG. 3 shows a schematic, enlarged view of the coating area.
- a drying device 10 which is a multi-tray dryer in the illustrated embodiment, a plurality of gypsum boards 12 are arranged.
- a conveyor 14 for example, via a
- Hydraulic 16 in the direction of arrow 18 is adjustable in height, the gypsum plates 12 are removed from the drying device 10 and transported via a second conveyor 20 to a stacking device, not shown, are stacked by the gypsum plates 12, for example, on pallets.
- a coating device 22 is provided in the region of the pivotable conveying device 14.
- the coating device 22 has spray nozzles 26 arranged transversely to a transport direction 24. With the aid of the spray nozzles 26, the gypsum boards 12 are coated while being transported by the conveying device 14 in the conveying direction 24.
- a plurality of drying devices can be arranged next to one another, so that a plurality of gypsum boards can be transported side by side at the same time by the conveying device 14 and coated simultaneously by correspondingly provided spray nozzles.
- the coating device 22 can be pivoted together with the conveying device 14 so that the distance between the spray nozzles 26 and the gypsum plates 12 remains constant regardless of the position of the conveyor 14.
- the coating device 22 is not provided in the region of the pivotable conveying device 14, but in the region of the conveying device 20 adjoining thereto. This has the advantage that a pivoting of the coating device together with the conveyor 14 is not required.
- a deflection device 28 (FIG. 3) can be provided in the area of the coating device 22 .
- the deflection direction has four deflection rollers 30, so that a conveying element 32, such as a conveying path, has a distance to the plasterboard 12 in a coating region 34.
- a receiving device 36 For collecting excess Be Mrsungsma- material is preferably between the gypsum board 12 and the conveyor element 32nd in the coating area 34, a receiving device 36, such as a tub provided.
- a gypsum board was conventionally made on a line where a gypsum slurry is continuously applied to a board web and covered with a second board web. After the setting of the gypsum core, the plates are separated and transferred to a floor dryer. After drying, a coating was carried out with a device according to FIG. 2, in which two wide-jet nozzles were used.
- the coating agent used was a water-based paint containing inorganic pigments, binders, emulsifiers and other stabilizers and stabilizers. The order was 65 g / m 2 . Due to the residual heat of the plates, the coating composition dried within 20 seconds so far that the coated plates could be stacked directly on top of each other using a standard device.
- Example 2 The procedure was as in Example 1, but after removal from the dryer and the coating two adjacent edges of the gypsum boards were chamfered and then stacked the plates.
- the gypsum board stack was subjected to a further coating step at a further station where the edges were coated.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL06725118T PL1858681T3 (pl) | 2005-03-17 | 2006-03-17 | Sposób produkcji powlekanych płyt gipsowych |
| EP06725118.1A EP1858681B1 (de) | 2005-03-17 | 2006-03-17 | Verfahren zur herstellung beschichteter gipsplatten |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05102105 | 2005-03-17 | ||
| EP06725118.1A EP1858681B1 (de) | 2005-03-17 | 2006-03-17 | Verfahren zur herstellung beschichteter gipsplatten |
| PCT/EP2006/060815 WO2006097520A2 (de) | 2005-03-17 | 2006-03-17 | Verfahren und vorrichtung zur herstellung beschichteter gipsplatten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1858681A2 true EP1858681A2 (de) | 2007-11-28 |
| EP1858681B1 EP1858681B1 (de) | 2014-05-07 |
Family
ID=34939002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06725118.1A Expired - Lifetime EP1858681B1 (de) | 2005-03-17 | 2006-03-17 | Verfahren zur herstellung beschichteter gipsplatten |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090074977A1 (de) |
| EP (1) | EP1858681B1 (de) |
| ES (1) | ES2470376T3 (de) |
| PL (1) | PL1858681T3 (de) |
| WO (1) | WO2006097520A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3013543B1 (de) * | 2013-06-26 | 2017-08-09 | Knauf Gips KG | Gipsplattenherstellungsanlage und verfahren zur herstellung einer gipsplatte |
| JP2016536159A (ja) * | 2013-10-07 | 2016-11-24 | クナウフ ギプス カーゲー | 石膏プラスターボードを生産するための方法 |
| JP7382723B2 (ja) * | 2013-10-07 | 2023-11-17 | クナウフ ギプス カーゲー | 石膏プラスターボードを生産するための方法 |
| DE102020003304B4 (de) | 2020-06-02 | 2022-06-23 | Klaus Obermeier | Trocknungsvorrichtung |
| CN111761702B (zh) * | 2020-07-08 | 2022-01-21 | 安庆米锐智能科技有限公司 | 一种空心砖成型处理设备及成型处理工艺 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB973492A (en) * | 1959-12-04 | 1964-10-28 | Gasway Corp | Method and apparatus for painting |
| US4572864A (en) * | 1985-01-04 | 1986-02-25 | The United States Of America As Represented By The United States Department Of Energy | Composite materials for thermal energy storage |
| US4988543A (en) * | 1989-09-25 | 1991-01-29 | Ecole Polytechnique | Process for incorporation of a phase change material into gypsum wallboards and other aggregate construction panels |
| AT408346B (de) * | 1997-08-22 | 2001-10-25 | Gerhard Melcher | Verfahren zur herstellung von überwiegend anorganischen schäumen auf ortsfesten anlagen und dafür benötigte anlagen |
| US6066201A (en) * | 1998-11-09 | 2000-05-23 | Ergon, Inc. | Thixotropic wax emulsion compositions |
| US20020071954A1 (en) * | 2000-12-08 | 2002-06-13 | Nelson Christopher R. | Cellulose gypsum based substrate with increased water resistance and strength by surface application of polymeric diphenylmethane diisocyanate |
| US6663979B2 (en) * | 2001-12-19 | 2003-12-16 | United States Gypsum Company | Coating for gypsum board face with uniform gloss intensity |
| US20050287293A1 (en) * | 2004-06-29 | 2005-12-29 | John Rothman | Coated wallboard process |
-
2006
- 2006-03-17 EP EP06725118.1A patent/EP1858681B1/de not_active Expired - Lifetime
- 2006-03-17 WO PCT/EP2006/060815 patent/WO2006097520A2/de not_active Ceased
- 2006-03-17 US US11/885,897 patent/US20090074977A1/en not_active Abandoned
- 2006-03-17 ES ES06725118.1T patent/ES2470376T3/es not_active Expired - Lifetime
- 2006-03-17 PL PL06725118T patent/PL1858681T3/pl unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006097520A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1858681B1 (de) | 2014-05-07 |
| US20090074977A1 (en) | 2009-03-19 |
| WO2006097520A3 (de) | 2007-01-18 |
| ES2470376T3 (es) | 2014-06-23 |
| WO2006097520A2 (de) | 2006-09-21 |
| PL1858681T3 (pl) | 2014-09-30 |
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