DK495588A - PROCEDURE FOR MANUFACTURING PLASTIC FIBER PLATES - Google Patents

PROCEDURE FOR MANUFACTURING PLASTIC FIBER PLATES

Info

Publication number
DK495588A
DK495588A DK495588A DK495588A DK495588A DK 495588 A DK495588 A DK 495588A DK 495588 A DK495588 A DK 495588A DK 495588 A DK495588 A DK 495588A DK 495588 A DK495588 A DK 495588A
Authority
DK
Denmark
Prior art keywords
board
moisture
dihydrate
hemihydrate
coagulation
Prior art date
Application number
DK495588A
Other languages
Danish (da)
Other versions
DK495588D0 (en
Inventor
Winold Vogt
Original Assignee
Pfleiderer Ind Gmbh & 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
Priority claimed from DE19873730585 external-priority patent/DE3730585A1/en
Application filed by Pfleiderer Ind Gmbh & Co Kg filed Critical Pfleiderer Ind Gmbh & Co Kg
Publication of DK495588D0 publication Critical patent/DK495588D0/en
Publication of DK495588A publication Critical patent/DK495588A/en

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Reinforced Plastic Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Producing Shaped Articles From Materials (AREA)

Abstract

PURPOSE: To produce a fibrous plaster board by a new combination of wet molding and dry recrystallization by preparing a suspension from a beaten fiber material and calcium sulfate dihydrate and dehydrating the same to mold a board and heating the board to recrystallize the same to a hemihydrate which is subsequently converted back into the dihydrate. CONSTITUTION: A suspension consisting of raw material plaster and wet-adjusted fiber is mechanically dehydrated by using an endless filter 13 so that hot distillation moisture becomes about 30-40% to be molded into a board. At this time, a dihydrate is recrystallized into a β-form of a hemihydrate in air and moisture necessary for coagulation is absorbed through the board. The raw material board is dried and calcined in a continuous heating furnace 15 at a board temp. of 100-170 deg.C, pref., 115-140 deg.C. Next, moisture necessary for coagulation is absorbed into a board core part by an absorbing apparatus 17. It is advantageous to set moisture excessiveness to at least 2.5 times a stoichiometric moisture demand. A press 19 is connected after absorption. By this constitution, penetration is equalized and the board is compressed to perform additional dehydration and calibration.
DK495588A 1987-09-11 1988-09-06 PROCEDURE FOR MANUFACTURING PLASTIC FIBER PLATES DK495588A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873730585 DE3730585A1 (en) 1987-09-11 1987-09-11 METHOD AND DEVICE FOR PRODUCING PLASTER FIBER PANELS
EP19880113212 EP0309709B1 (en) 1987-09-11 1988-08-13 Process for the production of gypsum fibre board

Publications (2)

Publication Number Publication Date
DK495588D0 DK495588D0 (en) 1988-09-06
DK495588A true DK495588A (en) 1989-03-12

Family

ID=25859685

Family Applications (1)

Application Number Title Priority Date Filing Date
DK495588A DK495588A (en) 1987-09-11 1988-09-06 PROCEDURE FOR MANUFACTURING PLASTIC FIBER PLATES

Country Status (5)

Country Link
JP (1) JPH01152008A (en)
AT (1) ATE73117T1 (en)
DK (1) DK495588A (en)
FI (1) FI884165A (en)
NO (1) NO884036L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080179775A1 (en) * 2007-01-31 2008-07-31 Usg Interiors, Inc. Transfer Plate Useful in the Manufacture of Panel and Board Products

Also Published As

Publication number Publication date
FI884165A (en) 1989-03-12
JPH01152008A (en) 1989-06-14
DK495588D0 (en) 1988-09-06
NO884036D0 (en) 1988-09-09
NO884036L (en) 1989-03-13
FI884165A0 (en) 1988-09-09
ATE73117T1 (en) 1992-03-15

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment