EP0422833A3 - Control system and method for the manufacture of plaster board - Google Patents

Control system and method for the manufacture of plaster board Download PDF

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Publication number
EP0422833A3
EP0422833A3 EP19900310878 EP90310878A EP0422833A3 EP 0422833 A3 EP0422833 A3 EP 0422833A3 EP 19900310878 EP19900310878 EP 19900310878 EP 90310878 A EP90310878 A EP 90310878A EP 0422833 A3 EP0422833 A3 EP 0422833A3
Authority
EP
European Patent Office
Prior art keywords
awat
raw materials
adjusted
set point
point value
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Withdrawn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
EP19900310878
Other versions
EP0422833A2 (en
Inventor
Peter Albert Childs
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.)
BPB Ltd
Original Assignee
BPB Industries PLC
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 BPB Industries PLC filed Critical BPB Industries PLC
Publication of EP0422833A2 publication Critical patent/EP0422833A2/en
Publication of EP0422833A3 publication Critical patent/EP0422833A3/en
Withdrawn legal-status Critical Current

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
    • 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
    • B28B5/026—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 indefinite length
    • B28B5/027—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 indefinite length the moulding surfaces being of the indefinite length type, e.g. belts, and being continuously fed
    • 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
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0063—Control arrangements
    • B28B17/0081—Process control
    • 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

Abstract

To control the manufacture of plasterboard the supervisor enters required board parameters and production rate into a central processor. The processor senses the ratio of liquid raw materials to solid raw materials (AWAT) in a mixer and compares AWAT to a calculated setpoint value (SWAT). The set point value is adjusted in accordance with the difference between AWAT and SWAT. The height of a slurry dam behind an extruder on the boardline is then sensed and compared with a set point value (SDAM). If the sensed value (ADAM) differs from the set point value (SDAM) the setting belt speed (ABEL) is adjusted. The adjusted belt speed is then compared to the desired production rate (SBEL) and the raw materials feed rates varied to compensate for the difference.
EP19900310878 1989-10-12 1990-10-04 Control system and method for the manufacture of plaster board Withdrawn EP0422833A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8923034 1989-10-12
GB8923034A GB2236876A (en) 1989-10-12 1989-10-12 Control of the manufacture of plaster board

Publications (2)

Publication Number Publication Date
EP0422833A2 EP0422833A2 (en) 1991-04-17
EP0422833A3 true EP0422833A3 (en) 1991-12-04

Family

ID=10664484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900310878 Withdrawn EP0422833A3 (en) 1989-10-12 1990-10-04 Control system and method for the manufacture of plaster board

Country Status (2)

Country Link
EP (1) EP0422833A3 (en)
GB (1) GB2236876A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3829125A1 (en) * 1988-08-27 1990-03-01 Bayer Ag METHOD FOR THE PRODUCTION OF CHROME ACID
CA2125557C (en) * 1992-10-10 2005-09-20 Helmut Wedi Process for producing composite boards
US9983574B2 (en) * 2013-09-30 2018-05-29 United States Gypsum Company Systems and methods for controlling a conveyor system during product changeovers
CN108724435B (en) * 2017-04-24 2019-09-13 北新集团建材股份有限公司 A kind of control method of plasterboard formation system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1560759A (en) * 1967-03-28 1969-03-21
US3532576A (en) * 1966-06-20 1970-10-06 Nat Gypsum Co Apparatus for making gypsum board
US4038531A (en) * 1976-05-18 1977-07-26 Weyerhaeuser Company Process control apparatus for controlling a particleboard manufacturing system
GB2035617A (en) * 1978-10-27 1980-06-18 Andritz Ag Maschf Control system for a dewatering press
DE3347720A1 (en) * 1983-12-31 1985-09-05 Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen Control device for a building board production plant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1307958A (en) * 1961-09-15 1962-11-03 Neyrpic Ets Improvements to machines for making paper, cardboard or other sheets
SE371460B (en) * 1967-04-24 1974-11-18 Asea Ab
LU79390A1 (en) * 1978-04-06 1979-11-07 Metallurgie Hoboken CONTINUOUS CASTING PROCESS OF A METAL AND APPARATUS FOR ITS IMPLEMENTATION
FR2429867A1 (en) * 1978-06-30 1980-01-25 Centre Tech Ind Papier CONTROLLING THE OPERATION OF THE HEADBOX OF A PAPER MACHINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532576A (en) * 1966-06-20 1970-10-06 Nat Gypsum Co Apparatus for making gypsum board
FR1560759A (en) * 1967-03-28 1969-03-21
US4038531A (en) * 1976-05-18 1977-07-26 Weyerhaeuser Company Process control apparatus for controlling a particleboard manufacturing system
GB2035617A (en) * 1978-10-27 1980-06-18 Andritz Ag Maschf Control system for a dewatering press
DE3347720A1 (en) * 1983-12-31 1985-09-05 Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen Control device for a building board production plant

Also Published As

Publication number Publication date
GB2236876A (en) 1991-04-17
GB8923034D0 (en) 1989-11-29
EP0422833A2 (en) 1991-04-17

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