WO2003016010A1 - Verfahren und vorrichtung zum herstellen von gipskartonplatten - Google Patents
Verfahren und vorrichtung zum herstellen von gipskartonplatten Download PDFInfo
- Publication number
- WO2003016010A1 WO2003016010A1 PCT/EP2002/008899 EP0208899W WO03016010A1 WO 2003016010 A1 WO2003016010 A1 WO 2003016010A1 EP 0208899 W EP0208899 W EP 0208899W WO 03016010 A1 WO03016010 A1 WO 03016010A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gypsum
- plasterboard
- suction
- cardboard
- web
- 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.)
- Ceased
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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
-
- 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
Definitions
- the invention relates to a method for producing plasterboard according to the preamble of claim 1 and a device for carrying out the method according to the preamble of claim 5.
- the gypsum has a proportion of pores, which has a significant influence on the weight of the board.
- the porosity at the interface between gypsum and cardboard has the major disadvantage that the bond between gypsum and cardboard and thus the stability of the entire gypsum cardboard plate deteriorates significantly.
- a method for producing plasterboard in which the bond between plaster and cardboard is to be improved.
- a first layer and two edge strips of gypsum with a relatively high density are applied to a lower cardboard web and then onto the first layer and between the edge strips a second layer of gypsum with a relatively low density.
- the surface thus formed is smoothed and covered with an upper cardboard web.
- the further treatment is carried out as usual by waiting for the setting time and then cutting and drying the plates.
- No. 2,940,505 describes a method in which the cardboard webs are each impregnated on one side with thin, non-hardened gypsum, and the board is then produced in a known manner.
- DE-AS 1 584 781 relates to a method for producing plasterboard panels provided with ribs on one side, in which plaster paste is applied to a lower, flat cardboard band.
- the gypsum slurry is shaped according to the ribs with a molding tool and covered with an upper rib-forming cardboard tape. So that the gypsum pulp penetrates into the rib-forming folds of the upper cardboard tape, these are supported with negative pressure acting from the outside.
- the cardboard-gypsum-pulp-cardboard arrangement thus formed is guided and held until the gypsum pulp solidifies and then cut into plates.
- the process does not concern the production of gypsum boards with a high proportion of pores in the plaster.
- the negative pressure is only applied in the area of the ribs and thus acts over only a small part of the width of the arrangement.
- the object of the invention is to provide a method for producing gypsum plasterboard, which in a simple way guarantees a secure bond between gypsum and cardboard, which produces a gypsum with relatively high density in the immediate vicinity of the cardboard, while the remaining gypsum produces one has the lowest possible density, so that lightweight plates with high stability are produced.
- Another object is to create an apparatus for performing the method.
- the first object is solved by the characterizing features of claim 1.
- the second object is solved by the characterizing features of claim 5.
- the device allows the method according to the invention to be carried out.
- the subclaims relate to the advantageous embodiment of the invention.
- the use of the negative pressure in the area of the forming station according to claim 2 has the greatest possible effectiveness because there is still a lot of free water.
- the selection of the size of the negative pressure as a function of its exposure time and the porosity of the carton according to claim 3 has the effect that on the one hand enough water is sucked in to achieve the desired effect, and on the other hand a tearing of the carton due to excessive tension as a result of excessive vacuum is avoided becomes.
- FIG. 1 shows the area of the molding station of a device according to the invention for producing plasterboard with suction boxes perpendicular from the side
- Figure 2 means for suction using the example of a suction box as a scheme
- Figure 3 shows the area of the molding station of another device according to the invention with suction rolls perpendicular from the side.
- a device according to the invention essentially consists of two unwinding devices, a molding station, means for suction with at least one suction device, transport devices, at least one cutting device and a drying device. For reasons of clarity, only the area of the molding station with the respective suction devices is shown in FIGS. 1 and 3.
- a lower cardboard web 1 is guided largely horizontally into the forming station 3 and on to the transport devices.
- the forming station 3 consists essentially of a machine frame with a top and horizontally arranged plate 4, over which the cardboard web 1 is guided, with a mixer 5, with means 6 for forming a plasterboard panel web 7 with suction devices 8, 9 designed as suction boxes suction.
- the transport devices are e.g. a conveyor belt 10 is arranged.
- the means 6 for molding have two lateral limiting strips, not shown, which run parallel to the transport direction 2 of the cardboard web 1 in the area of the plate 4 up to the distributing devices 11 and at a distance from one another and determine the width of the plasterboard board web 7. Furthermore, the means 6 for molding have a base plate 12, a pressure plate 15 and hydraulic cylinders 16. At the height of the plate 4 is the base plate 12, the front edge of which, viewed in the direction of transport 2, lies in the upper plane of the plate 4 and which rises gently in the further course and then again runs parallel to the plate 4. An upper cardboard web 13 is guided over deflection rollers 14 so that it runs parallel and spaced from the area of the front edge of the base plate 12 to the lower cardboard web 1. The pressure plate 15 is arranged above and parallel to the upper cardboard web 13. It is vertical over the Hydraulic cylinder 16 so displaceable that the distance between the base plate 12 and the pressure plate 15 corresponds exactly to the desired thickness of the plasterboard sheet 7.
- the suction boxes 8, 9 are fastened between the means 6 for molding and the conveyor belt 10.
- the lower suction box 9 is arranged so that its upward suction surface lies in one plane with the lower surface of the lower cardboard web 1. This level is identical to the level between the upper rear edge of the base plate 12 and the upper limit of the conveyor belt 10.
- the upper suction box 8 is fixed so that its downward suction surface lies in one plane with the lower surface of the pressure plate 15.
- the means for suction are shown in FIG. 2:
- they essentially comprise the suction box 9, a pressure-maintaining valve 17, a separating device 18, a suction fan 19 and connecting pipelines and measuring devices, these means being arranged separately for each suction point.
- One longitudinal end of the suction box 9 is connected to the suction fan 19 via the separating device 18.
- the other longitudinal end is connected to the pressure holding valve 17.
- FIG. 1 Another exemplary embodiment for the area of a molding station 3 is shown in FIG. It is largely constructed in the same way as the example in FIG. 1 and differs from it in the means 6 for shaping and in the means for suction, the latter being designed with suction rollers 20, 21.
- the means 6 for shaping have two lateral limiting strips, not shown, which are spaced apart from one another and run parallel to the transport direction 2 of the cardboard sheet 1 and determine the width of the plasterboard sheet 7, and an upper suction roller 21.
- the upper cardboard web 13 is guided over deflection rollers 14 to the upper suction roller 21, which is rotatably mounted so that its axis is horizontal and perpendicular to a longitudinal axis of the lower cardboard web 1 and that the lower boundary is spaced from the plate 4. The position of the axis can be adjusted vertically.
- the upper cardboard web 13 is guided around the upper suction roll 21 and further parallel and at a distance from the lower cardboard web 1.
- a lower suction roller 20 is rotatably mounted in a corresponding recess in the plate 4 such that the upper boundary of the lower suction roller 20 lies in the upper plane of the plate 4 and that the axis is perpendicular to that in the direction of the arrow 2 seen front limit of the upper suction roller 21 is located.
- the lower cardboard web 1 is continuously pulled off a roll in a roll-off device and guided over the plate 4 through the means 6 for molding onto the conveyor belt 10.
- gypsum powder, water foaming agent and, if appropriate, further additives are metered in continuously via the corresponding supply lines and mixed to form a porous gypsum paste 22.
- the upper cardboard web 13 which is fed from a second unwinding device, is pressed in a known manner onto the surface of the gypsum pulp 22 which has not yet set and together with the lower cardboard web 1 and the gypsum pulp 22 into the final shape of the gypsum cardboard panel web 7 - thickness, width and, if necessary, special shape of the edge area.
- the edges of the lower cardboard web 1, which is correspondingly wider than the upper cardboard web 13 are folded up and connected to it in an overlapping manner.
- the suction devices e.g. the suction boxes 8, 9 or the suction rolls 20, 21 have a negative pressure of e.g. - 0.2 bar ( ⁇ 0.8 bar (abs)) on the side facing away from the gypsum paste 22 of both the lower cardboard web 1 and the upper cardboard web 13.
- a negative pressure e.g. - 0.2 bar ( ⁇ 0.8 bar (abs)
- the pores in the gypsum paste are destroyed as the distance to one of the cardboard sheets 1, 13 decreases, so that the density of the gypsum paste in the area of the cardboard sheets 1, 13 is higher than in the rest of the area. Especially at the interfaces between cardboard webs 1, 13, the pores are almost completely destroyed.
- supersaturated water is sucked into the cardboard webs 1, 13 with dissolved gypsum.
- the negative pressure applied to the suction device is dependent on e.g. adapted to the carton quality and the production speed.
- the shaped plasterboard sheet 7 is transported further as is known, the gypsum slurry setting and hardening, cut into slabs after setting and dried in the drying device.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Producing Shaped Articles From Materials (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Finishing Walls (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02767350A EP1420926B1 (de) | 2001-08-17 | 2002-08-09 | Verfahren und vorrichtung zum herstellen von gipskartonplatten |
| US10/492,861 US20050155689A1 (en) | 2001-08-17 | 2002-08-09 | Method and device for producing gypsum plasterboards |
| DE50207446T DE50207446D1 (de) | 2001-08-17 | 2002-08-09 | Verfahren und vorrichtung zum herstellen von gipskartonplatten |
| CA002462520A CA2462520A1 (en) | 2001-08-17 | 2002-08-09 | Method and device for producing gypsum plasterboards |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10139420.9 | 2001-08-17 | ||
| DE10139420A DE10139420B4 (de) | 2001-08-17 | 2001-08-17 | Verfahren und Vorrichtung zum Herstellen von Gipskartonplatten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003016010A1 true WO2003016010A1 (de) | 2003-02-27 |
Family
ID=7695089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/008899 Ceased WO2003016010A1 (de) | 2001-08-17 | 2002-08-09 | Verfahren und vorrichtung zum herstellen von gipskartonplatten |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20050155689A1 (de) |
| EP (1) | EP1420926B1 (de) |
| AT (1) | ATE332221T1 (de) |
| CA (1) | CA2462520A1 (de) |
| DE (2) | DE10139420B4 (de) |
| WO (1) | WO2003016010A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7670520B2 (en) * | 2003-09-18 | 2010-03-02 | United States Gypsum Company | Multi-layer process for producing high strength fiber-reinforced structural cementitious panels with enhanced fiber content |
| US7445738B2 (en) * | 2003-09-18 | 2008-11-04 | United States Gypsum Company | Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels |
| US7513768B2 (en) | 2003-09-18 | 2009-04-07 | United States Gypsum Company | Embedment roll device |
| US20080099133A1 (en) | 2006-11-01 | 2008-05-01 | United States Gypsum Company | Panel smoothing process and apparatus for forming a smooth continuous surface on fiber-reinforced structural cement panels |
| US7513963B2 (en) * | 2006-11-01 | 2009-04-07 | United States Gypsum Company | Method for wet mixing cementitious slurry for fiber-reinforced structural cement panels |
| US7524386B2 (en) * | 2006-11-01 | 2009-04-28 | United States Gypsum Company | Method for wet mixing cementitious slurry for fiber-reinforced structural cement panels |
| US7754052B2 (en) | 2006-11-01 | 2010-07-13 | United States Gypsum Company | Process and apparatus for feeding cementitious slurry for fiber-reinforced structural cement panels |
| PL2694283T3 (pl) | 2011-04-01 | 2017-08-31 | Knauf Gips Kg | Karton z optymalizowaną przyczepnością do gipsu |
| US12338621B2 (en) | 2021-09-17 | 2025-06-24 | United States Gypsum Company | Structural load-bearing wall |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2940505A (en) * | 1952-10-16 | 1960-06-14 | British Plaster Board Ltd | Production of plaster board |
| US3260635A (en) * | 1963-08-22 | 1966-07-12 | United States Gypsum Co | Production of ribbed building board |
| WO1995032084A1 (en) * | 1994-05-25 | 1995-11-30 | National Gypsum Company | Apparatus and method for manufacturing gypsum board |
| US6190476B1 (en) * | 1998-07-08 | 2001-02-20 | Westroc Inc. | Gypsum board manufacture with co-rotating spreader roller |
| WO2002024424A1 (en) * | 2000-09-20 | 2002-03-28 | United States Gypsum Company | A process for making gypsum board having improved through-penetration strength |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1584781A (en) * | 1925-04-11 | 1926-05-18 | Langworthy Mitchell | Portable fracture bed |
-
2001
- 2001-08-17 DE DE10139420A patent/DE10139420B4/de not_active Expired - Fee Related
-
2002
- 2002-08-09 DE DE50207446T patent/DE50207446D1/de not_active Expired - Fee Related
- 2002-08-09 US US10/492,861 patent/US20050155689A1/en not_active Abandoned
- 2002-08-09 AT AT02767350T patent/ATE332221T1/de not_active IP Right Cessation
- 2002-08-09 WO PCT/EP2002/008899 patent/WO2003016010A1/de not_active Ceased
- 2002-08-09 EP EP02767350A patent/EP1420926B1/de not_active Expired - Lifetime
- 2002-08-09 CA CA002462520A patent/CA2462520A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2940505A (en) * | 1952-10-16 | 1960-06-14 | British Plaster Board Ltd | Production of plaster board |
| US3260635A (en) * | 1963-08-22 | 1966-07-12 | United States Gypsum Co | Production of ribbed building board |
| WO1995032084A1 (en) * | 1994-05-25 | 1995-11-30 | National Gypsum Company | Apparatus and method for manufacturing gypsum board |
| US6190476B1 (en) * | 1998-07-08 | 2001-02-20 | Westroc Inc. | Gypsum board manufacture with co-rotating spreader roller |
| WO2002024424A1 (en) * | 2000-09-20 | 2002-03-28 | United States Gypsum Company | A process for making gypsum board having improved through-penetration strength |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50207446D1 (de) | 2006-08-17 |
| EP1420926A1 (de) | 2004-05-26 |
| US20050155689A1 (en) | 2005-07-21 |
| DE10139420A1 (de) | 2003-03-06 |
| CA2462520A1 (en) | 2003-02-27 |
| EP1420926B1 (de) | 2006-07-05 |
| ATE332221T1 (de) | 2006-07-15 |
| DE10139420B4 (de) | 2006-07-27 |
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