EP2576168B1 - Bande de transport et méthode pour fabriquer le placoplâtre - Google Patents

Bande de transport et méthode pour fabriquer le placoplâtre Download PDF

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Publication number
EP2576168B1
EP2576168B1 EP11723946.7A EP11723946A EP2576168B1 EP 2576168 B1 EP2576168 B1 EP 2576168B1 EP 11723946 A EP11723946 A EP 11723946A EP 2576168 B1 EP2576168 B1 EP 2576168B1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
ditches
belt according
conveyor
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
EP11723946.7A
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German (de)
English (en)
Other versions
EP2576168A1 (fr
Inventor
Thomas Krämer
Jürgen MARTIN
Grzegorz Klon
Artur Kropielnicki
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
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Publication date
Application filed by Knauf Gips KG filed Critical Knauf Gips KG
Priority to EP11723946.7A priority Critical patent/EP2576168B1/fr
Priority to PL11723946T priority patent/PL2576168T3/pl
Publication of EP2576168A1 publication Critical patent/EP2576168A1/fr
Application granted granted Critical
Publication of EP2576168B1 publication Critical patent/EP2576168B1/fr
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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

Definitions

  • the present invention relates to a conveyor belt and its use.
  • Conveyor belts are usually stationary systems which belong to the continuous conveyors. They are used in many forms for a wide variety of applications, for example in opencast mining, in industrial production or at supermarket cash registers. They are used both for the transport of general cargo and for the transport of bulk goods.
  • conveyor belts consist of a carcass of textile or steel inserts, which transmit the tensile forces. This carcass is surrounded by one or more cover or wear layers which may be of different materials (e.g., rubber, rubber compounds, modified PVC blends).
  • CA 2,363,480 relates to a conveyor belt for transporting particles such as coal, pieces of wood or cereal grains, in which a slipping back during a region in which the conveyor belt is increasing, to be prevented.
  • EP 1 925 576 relates to a conveyor belt for curved belt applications in which a conveyor belt is guided in a curve.
  • the transport product undergoes a chemical or physical change process during transport, for example by drying, curing, setting, shaping, surface structuring, etc.
  • the slab strand consists of a face cardboard and a cardboard backing with a trapped, liquid, still malleable and settable gypsum core between the two boxes.
  • the gypsum core exotherms exothermally.
  • the plate strand heats up to 10K during this setting process.
  • the slab strand is subject to length and width expansion. First portions of the excess water added in the gypsum slurry production process are released to the environment via the already moist cardboard surface.
  • the visible side board forms during the transport process the Plattenrohstrangunterseite and thus the contact surface to the forming belt.
  • the relative movement between Rohplattenstrang and Formgurt must be recorded without adversely affecting the gypsum board surface.
  • volume is required for portions of the excess water condensing on the belt.
  • the driving side panel is necessary due to the very high product requirements of the market for the finished panel side view surface.
  • the gypsum board surface must be level, without dents and undulations, without grooves or other mechanical deformations and damages.
  • a realization of the requirements can be achieved in production only by a manufactured and used with special requirements for the belt surface form band.
  • Object of the present invention was to find ways to improve the surface structure of Abbindeb Sn / mold bands, and thus to allow a more reliable, more economical production of the straps and the gypsum boards.
  • the claimed claimed structure causes the conveyor belt promotes the Plattenstrangober vomformung positive.
  • the formation of the plasterboard by the surface is the relevant property of the conveyor belt, while the actual transport function is practically irrelevant. It is believed that the wells dissipate and diffuse the water leaving the plasterboard during the setting process and distribute it on the conveyor belt surface to reduce the adhesive forces between the carton and the conveyor belt surface. This results in certain flexibility with regard to the expansion of the board web and the entire gypsum matrix strand.
  • the volume of the wells is just chosen so that the liquid can be removed, on the other hand, the recess but not so large that the structures can not support the plate in a plane.
  • the parameters of claim 1 have proven to be a suitable description. It is particularly important that the wells are networked together, so that liquid can be removed.
  • the Dränage Angel plays an essential role in the operation of the transport and Abbindebandes invention.
  • the conveyor belt according to the invention has a support surface for the product, this page is also referred to as the support side. Within the support surface, there are one or more structural regions having recesses. This structural area has depressions. These pits form a network on the surface, i. H. Wells are connected to other wells.
  • a structural area is an area on the conveyor belt of at least 20 * 20 cm.
  • the depressions preferably have widths of max. 1.5 mm. There may be individual wider depressions, with at least 90% of the well being no wider than 1.5 mm.
  • the width of a pit is measured by measuring the smallest distance between two edge areas of the pit.
  • the wells should not be too deep either.
  • the recesses are in the range of 0.1 to 2 mm. At least 90% of wells should not exceed this range; H. lie lower.
  • the widths and depths are maintained in at least one structural area.
  • each structural region has no depressions.
  • An indentation occurs when the material is abruptly (discontinuously) lowered by a height of at least 0.1 mm in relation to the adjacent regions. Lower height differences do not form a depression.
  • the volume of the depression based on an area of 1 cm 2 , should be between 10 and 80 mm 3 .
  • the parameters can be measured as follows:
  • a sample of a conveyor belt is cut to an exact size of 10 * 10 cm and determined by measuring the thickness at least 10 points evenly distributed over the surface with a manual thickness gauge 50/5 with a 30mm dish.
  • the blank edges of the conveyor belt are sealed against ingress of water.
  • the theoretical volume of the surface-plane conveyor belt is calculated from the mean value determined over the 10 thickness measured values and the base area.
  • the sample is immersed in a vessel with water and measured by the buoyancy reduced weight. From the difference between the weight in the dry state and the weight in water, the actual volume of the body can be determined. The measured volume minus the actual volume gives the volume of the sum of the wells of the sample.
  • a sample of the conveyor belt to be examined is placed evenly with the structured surface facing upwards on a base.
  • a crack width meter rack width ruler
  • a crack magnifying glass with integrated scale the width of the recess is manually determined optically.
  • a sample of the conveyor belt to be examined is placed evenly with the structured surface facing upwards on a base.
  • a digital profile thickness gauge with a sensor head adapted in thickness, the depths of the depressions are measured manually.
  • the recesses are regularly formed, for example in the form of square structures. However, it is preferred that the depressions run irregularly, it being possible to use both irregular structures-for example zigzag courses, curves, etc.-as well as a completely irregular-for example stochastic structure-can be used.
  • the recesses may extend parallel to the direction of the conveyor belt, but they can also be transverse or at any other angles to the direction of the conveyor belt. For the wells to form a network, it is necessary that they do not all run parallel to each other. Recesses can be formed at right angles, but also with shallower or more acute angles to each other. In particular, curves can also be used instead of sharp angles.
  • the depressions themselves can run in a straight line, but they can not run in a straight line in a depression, but form curves, etc. and change in the course depth and width.
  • the invention further relates to the use of the conveyor belt according to the invention for transporting a plasterboard during a setting process.
  • the setting process is the setting of a gypsum matrix.
  • Corresponding structured areas can be attached to conveyor belts in a variety of ways. It is possible to use blades to rupture the surface, emboss the surface with embossing rollers, or use UV radiation and temperature to age the material and then break it. Further variants are shock freezing of the surface with liquid nitrogen and breaking of the surface by mechanical stress and combinations thereof.
  • Suitable materials for the support surface are in particular natural and synthetic rubbers, but also various polymers such. also modified PVC.
  • Such conveyor belts may have fabric structures inside, but these are then covered with a cover / wear layer.
  • a conveyor belt was subjected to UV and cold / heat treatment.
  • the surface is in FIG. 2 shown.
  • the plasterboard produced on this tape had a particularly uniform and smooth visible side.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Belt Conveyors (AREA)

Claims (13)

  1. Bande de transport et de formage pour plaques de plâtre cartonné avec une surface d'appui pour le transport du produit et au moins une zone structurelle à l'intérieur de la surface d'appui, la zone structurelle au moins au nombre de un présentant des creux,
    - les creux formant un réseau
    - au moins 60 % de chaque zone structurelle ne présentant pas de creux
    - le volume des creux, rapporté à une surface de base de 1 cm2, se situant dans la plage de 10 à 80 mm3.
  2. Bande de transport selon la revendication 1, la largeur des creux étant de 1,5 mm maximum.
  3. Bande de transport selon la revendication 1 ou 2, la profondeur des creux se situant dans la plage de 0,1 à 2 mm.
  4. Bande de transport selon une des revendications 1 à 3, caractérisée en ce que les creux sont réalisés de façon régulière.
  5. Bande de transport selon une des revendications 1 à 3, caractérisée en ce que les creux sont réalisés de façon irrégulière.
  6. Bande de transport selon une des revendications 1 à 5, caractérisée en ce que les creux sont disposés parallèlement à la direction de déplacement de la bande de transport.
  7. Bande de transport selon une des revendications 1 à 5, caractérisée en ce que les creux ne sont pas disposés parallèlement à la direction de déplacement de la bande de transport, en particulier sont disposés transversalement à la direction de déplacement de la bande de transport.
  8. Bande de transport selon une des revendications 1 à 7, caractérisée en ce que les creux sont disposés en ligne droite.
  9. Bande de transport selon une des revendications 1 à 7, caractérisée en ce que les creux ne sont pas disposés en ligne droite.
  10. Bande de transport selon une des revendications 1 à 9, caractérisée en ce que la zone structurelle est plane à l'exception des creux.
  11. Bande de transport selon une des revendications 1 à 10 pour le transport d'un tronçon brut de plaque de plâtre pendant le processus de durcissement.
  12. Utilisation selon la revendication 11 pour la formation de la surface d'un tronçon brut de plaque de plâtre.
  13. Procédé de fabrication d'une plaque de plâtre cartonné, comprenant les étapes suivantes :
    - réalisation d'une matrice de plâtre pouvant durcir
    - application de la matrice de plâtre sur une première bande de carton
    - couverture de la matrice de plâtre avec une deuxième bande de carton, ce qui forme une bande de plâtre cartonné
    - durcissement de la matrice de plâtre sur une bande de transport et de formage selon une des revendications 1 à 10
    - découpe de la bande de plâtre cartonné durcie au moins partiellement.
EP11723946.7A 2010-06-04 2011-06-01 Bande de transport et méthode pour fabriquer le placoplâtre Active EP2576168B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11723946.7A EP2576168B1 (fr) 2010-06-04 2011-06-01 Bande de transport et méthode pour fabriquer le placoplâtre
PL11723946T PL2576168T3 (pl) 2010-06-04 2011-06-01 Taśma transportująca i sposób produkcji płyty gipsowo-kartonowej

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10164998 2010-06-04
PCT/EP2011/059118 WO2011151401A1 (fr) 2010-06-04 2011-06-01 Courroie transporteuse
EP11723946.7A EP2576168B1 (fr) 2010-06-04 2011-06-01 Bande de transport et méthode pour fabriquer le placoplâtre

Publications (2)

Publication Number Publication Date
EP2576168A1 EP2576168A1 (fr) 2013-04-10
EP2576168B1 true EP2576168B1 (fr) 2014-03-19

Family

ID=43066973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11723946.7A Active EP2576168B1 (fr) 2010-06-04 2011-06-01 Bande de transport et méthode pour fabriquer le placoplâtre

Country Status (4)

Country Link
EP (1) EP2576168B1 (fr)
ES (1) ES2460090T3 (fr)
PL (1) PL2576168T3 (fr)
WO (1) WO2011151401A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE687837C (de) * 1936-08-20 1940-02-07 J Laroche Lechat Sa Ets Vorrichtung zum Enttropfen von nassem Foerdergut
FR991280A (fr) * 1949-05-14 1951-10-03 Le Caoutchouc S I T Perfectionnements aux courroies transporteuses pour le transport de matières granulaires à grains fins
CA948997A (en) * 1971-06-09 1974-06-11 Richard B. H. Sewell Belt for picking up liquids
JPS617117A (ja) * 1984-06-19 1986-01-13 Yamauchi Rubber Ind Co Ltd 抄紙工程のエクステンデッドニッププレス用エンドレスベルト
DE4115615A1 (de) * 1991-05-14 1992-11-19 Rolf Weigele Transportband fuer eine vorrichtung zur uebergabe von teigigem backgut
CA2363480A1 (fr) 2001-05-14 2002-11-14 Ronald F. Ryde Courroie rainuree flexible pour convoyeur
US7670240B2 (en) * 2001-10-04 2010-03-02 Otis Elevator Company Elevator belt assembly with noise reducing groove arrangement
US20060029785A1 (en) 2004-08-03 2006-02-09 Lance Wang Gypsum boards with glass fiber reinforcements having a titanate or zirconate coupling coating
US8192317B2 (en) 2006-11-22 2012-06-05 Veyance Technologies, Inc. Reinforced belt for powerturn applications
US20100055439A1 (en) * 2008-08-29 2010-03-04 Lee Jerry H C WUCS Fibers Having Improved Flowing And Dispersing Properties

Also Published As

Publication number Publication date
ES2460090T3 (es) 2014-05-13
EP2576168A1 (fr) 2013-04-10
WO2011151401A1 (fr) 2011-12-08
PL2576168T3 (pl) 2014-08-29

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