EP0079824A1 - Markieren von zusammengesetzten durch Glasfäden bewehrten Gipsprodukten - Google Patents

Markieren von zusammengesetzten durch Glasfäden bewehrten Gipsprodukten Download PDF

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Publication number
EP0079824A1
EP0079824A1 EP82402047A EP82402047A EP0079824A1 EP 0079824 A1 EP0079824 A1 EP 0079824A1 EP 82402047 A EP82402047 A EP 82402047A EP 82402047 A EP82402047 A EP 82402047A EP 0079824 A1 EP0079824 A1 EP 0079824A1
Authority
EP
European Patent Office
Prior art keywords
product
plaster
matrix
nozzles
lines
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
Application number
EP82402047A
Other languages
English (en)
French (fr)
Inventor
Claude Jacquot
Freddy Wattez
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.)
Saint Gobain Isover SA France
Original Assignee
Saint Gobain Isover SA France
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 Saint Gobain Isover SA France filed Critical Saint Gobain Isover SA France
Publication of EP0079824A1 publication Critical patent/EP0079824A1/de
Ceased legal-status Critical Current

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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
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/06—Accessories, e.g. tool or work holders
    • B44B3/061—Tool heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • 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
    • B28B17/0036—Cutting means, e.g. water jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/72—Non-load-bearing walls of elements of relatively thin form with respect to the thickness of the wall
    • E04B2/723—Non-load-bearing walls of elements of relatively thin form with respect to the thickness of the wall constituted of gypsum elements
    • E04B2002/725—Corner or angle connection details

Definitions

  • the present invention relates to the production of marks on composite products, that is to say formed from a matrix in which threads or fibers are embedded.
  • plaster products provided with such marks, reinforced with threads or fibers, in particular glass, said products being in particular in the form of plates or ribbon.
  • They may be non-traversing marks, that is to say visible only on one side of the products, along rectilinear lines or not, or on a surface, to decorate or give a mark. They may also be through marks obtained by removing the matrix along a straight line or not or on a surface, while preserving the reinforcing threads or fibers, in particular with a view to folding the product along of said line or of the insertion of any part or accessory in the opening made on said surface.
  • the matrix may be a plastic material, a hydraulic binder, plaster, etc., the reinforcements of metallic threads, glass threads, natural or artificial textile threads etc.
  • plaster-free lines consisting only of exposed reinforcing threads, do not always have the desired quality. Indeed, on the one hand the chamfers which border them are too irregular to be aesthetic, on the other hand, they are too smooth and even sometimes still cluttered with plaster waste that has been released, so that in the in the case of a folding, the blocking, relative to one another, of the plate elements folded around said line, is made more difficult.
  • the present invention aims to remedy the aforementioned drawbacks, namely complexity of the technique, risk of nicking the reinforcing wires, fouling of installations releasing plaster, imprecision in the shape of the edges of the plaster-free line which can lead to a rupture of the reinforcements by excessive tensioning during folding, unsightly of these edges, inability of said edges to be assembled one on the other.
  • the through marks can have a double aspect, on one side of the plates, a very precise, clear, aesthetic layout, on the other side, a serrated appearance which during folding, on the one hand promotes the assembly one on the other of the edges of the plate elements, on the other hand provides a gradually increasing resistance to folding.
  • This process essentially consists in spraying on the product, and in particular on the plaster product having son and / or glass fibers embedded in its thickness since we said to take the plaster reinforced by glass son as an example, without this limit the invention to said plaster, at least one jet of a fluid under a pressure at least equal to that which degrades the plaster matrix, but less than that which attacks the threads or fibers embedded in said matrix.
  • the jets are jetted at an angle which is of the same order of magnitude as that which these edges should form with the surface of the product.
  • a product is thus obtained provided with marks which following the energy of the water jets, are either non-through, through.
  • the invention also provides a device for carrying out the method, this device essentially comprising means carrying the product to be worked and nozzles supplied with fluid, in particular water under pressure which, in the case of a plaster product reinforced by glass strands, passing under the nozzles at a speed of less than 10 meters per minute, is between 1 and 75 bars and preferably between 5 and 30 bars.
  • Fig. 1 shows in exploded view, an example of reinforcements which can be introduced inside plasterboards manufactured in particular as indicated in the French patent publication 2416777 and having the order of a centimeter in thickness. It may be a sheet of glass threads 1, continuous, looped and entangled, enclosed above and below by a grid of glass threads 2 and 3, for example with a square mesh of 0.5 to 1 centimeter. next to.
  • Exposing reinforcements such as 1, 2 and 3 in a plate plaster in particular for the production of fold lines for the manufacture of non-planar building panels, for example U-shaped panels, of the type described in French patent publication No. 2448008, or only the tracing of non-through marks, on plasterboard, can be obtained using the device, an example of which is given in fig. 2.
  • a plaster ribbon 4 can be seen passing over a conveyor belt 5 providing the plaster with a continuous bearing surface, surmounted by equipment A intended to produce two parallel lines of marks, whether crossing or not.
  • This equipment A essentially consists of two plotting stations 7 and 8 each assigned to tracing a line, each station comprising a series of two nozzles 9 and 10 supplied with water under medium pressure and a suction mouth 11 placed after the nozzles considering the direction of travel of the plaster tape.
  • the two plotting stations 7 and 8 are carried by a gantry 12 straddling the plaster tape production line and which can be moved along said line at will to be placed at the place where the plaster is in the ready state. more favorable to undergo the tracing of a mark.
  • Each nozzle 9 or 10 is mounted sliding and orientable in a nozzle holder 13 or 14 mounted on a plate 15 attached to the gantry 12 by means of a system allowing the height adjustment of said plate relative to the conveyor 5, for example a threaded rod 16.
  • the position of each plate can also be adjusted in the transverse direction, for example using threaded rods 16 '.
  • Each nozzle 9 or 10 essentially consists of a straight tube 17 having a length at least equal to 10 times its diameter, or about 8 to 10 ' cm in length, to stabilize the flow of the liquid, connected on one side by a hose 18 to a pressurized water supply station not shown in the figures, terminated on the other side by a calibrated nozzle 19.
  • the suction mouth 11 is also fixed to the gantry 12 so as to have its opening disposed flush with the plaster tape.
  • the two nozzles 9 and 10 are inclined relative to the surface of the plaster tape and also inclined relative to each other, thus together forming a V approximately in a plane perpendicular to the direction of travel of the plaster tape.
  • the two nozzles are slightly offset from each other in the direction of advance of the plaster tape. All the settings for distances, pressure, angles depend on the nature of the plaster, its condition at moment of marking, depth of the mark, its profile. be able to be marked the plaster must be plastic, that is to say during setting. If the setting is too little advanced the trace obtained by the water jets is immediately filled.
  • the setting of the plaster must be sufficiently advanced for the plaster to stand alone. More precisely, the plaster can be marked from the moment when it ceases to creep under its own weight, until the moment when its setting speed reaches a maximum.
  • This maximum setting speed can be identified by performing plaster sampling series on the belt conveyor 5 and determining for each sample taken the amount of phase transformed.
  • the temperature of the plaster tape can be recorded using thermocouples embedded in the plaster, the setting reaction being exothermic, it is thus possible to detect the moment when the setting speed is maximum.
  • this period during which the plaster tape can be marked is approximately between a quarter of the time of end of setting Vicat, and the time of setting Vicat; the Vicat setting end time and the conditions for its measurement being defined in AFNOR standards for hydraulic binders P 15-414, P 15-431 and B 12-402. Consequently, the gantry 12 is placed in the region of the production line where the plaster is in this state.
  • nozzle 9 or 10 nozzle with baton jet, nozzle with flat jet, nozzle with conical jet, etc, ... according to the nature of the desired brand.
  • nozzles with stick jets Assuming that a stick jet nozzle has been chosen, its diameter is then determined; diameters between 0.30 and 1 mm will be commonly used.
  • the water pressure feeding the nozzles is a function of the desired mark depth, but for a through mark on a reinforced plasterboard as described above, 6 to 7 mm thick, not passing more than 10 m / min under the marking nozzles 9 or 10 it will be between 1 and 75 bars and preferably between 5 and 30 bars.
  • the plaster continues to be degraded, of course, but the reinforcements also begin to be damaged.
  • the height of the nozzles in relation to the plaster tape must also be adjusted in particular for that the jet from nozzle 9 or 10 retains the same characteristics when it arrives on the plaster tape. From this height also depends the depth of the mark and / or the extent of the mark when using conical jet nozzles as illustrated in FIG. 6. In the case of stick jet nozzles, distances from the nozzles to the plaster tape, of the order of 3 mm to 10 cm, may be adopted for the water pressures and nozzle diameters indicated above. This height of the nozzles will be adjusted by modifying the height of the plate 15, for example using the threaded rod 16.
  • the shape of the profile of the mark will depend essentially on the inclination of the jets relative to the surface of the ribbon. plaster.
  • Each jet can be tilted relative to the plaster tape at an angle between 90 ° (vertical jet) and 30 °.
  • the two nozzles will be inclined at the same angle relative to the plaster tape, so that they form a V.
  • the two nozzles will be arranged at short distance from each other, at a sufficient distance however so that the jets do not disturb before touching the plaster, shifts of the order of a centimeter in the direction of advance of the plaster tape will be very suitable .
  • the jets will be made to converge on the upper surface of the product or in the surface layer of the plaster tape free of reinforcements.
  • the suction mouth 11 associated with each pair of nozzles 9 and 10 is advantageously arranged after said nozzles, at a distance of between 5 mm and 5 cm, and preferably less than 2 cm, approximately 5 mm from the surface of the plaster. . It is connected to a vacuum installation not shown in the figures, providing a vacuum of the order of 300 mm CE. The installation being adjusted as described above, it is possible to obtain a through trace as shown diagrammatically in FIG. 3. On the upper surface of the plaster tape, the mark has sharp and smooth edges 20 and 21, while on the lower surface of the tape, the mark has more irregular edges 22 and 23, provided with fine serrations distributed randomly. The width of the mark on the upper face is determined by the different settings of the jets.
  • the shape of the mark and in particular its width also depends on these adjustments, but moreover it depends on the reinforcements placed on the path of the water jets. Indeed, each coherent jet of water when it enters the product, is disturbed as soon as it meets a wire, it then ceases to be coherent is deflected by the wire, turbulence is created, possibly it interacts with the neighboring jet and finally it emerges on the other face of the product in a medium direction substantially identical to its direction of entry, but having a wider section and diverging. It then produces in the thicknesses of the plaster tape located under the reinforcements, a mark whose profile is no longer as regular as in front superior.
  • the reinforcements, in particular the tangled wires 1, looped in a sheet having a random distribution, plaster is removed on the underside which also are irregular and produce the serrations 24 or irregularities.
  • Fig. 4 shows in enlarged view an underside of through mark. We can see the serrations as mentioned above, having real widths of the order of mm, but also the reinforcing wires left intact.
  • Water can be allowed to flow by simple gravity under the plaster tape, said tape being of course supported by a discontinuous conveyor. It is also possible to draw water under the plaster tape.
  • jets of water instead of jets of water, it is similarly possible to use jets of other fluids: gas jets or jets of other liquids.
  • fig. 6 shows the production of a mark covering an entire surface using a conical jet nozzle.
  • the through marks along lines can in particular constitute fold lines around the hinge formed by reinforcements free of plaster and left intact, for the manufacture of non-planar building panels, for example U-shaped panels.
  • the edges 25, 26 of plasterboard delimited by rectilinear marks can be folded as shown in fig. 5, jagged edges of the mark inside the fold.
  • the U-shaped panel has aesthetic edges, with a very clear outline.
  • the fold is less aesthetic, but this is not annoying because the top of such panels is never visible after installation, and in addition it is generally covered with an insulating material of the type glass wool.
  • contact edges are obtained which, instead of being smooth as in U-shaped panels of the old type, have irregularities. These irregularities favor the assembly of the two edges one on the other, in particular using glue, said glue passing from one face to the other between the reinforcing threads and between the different serrations of the two edges which touch each other as shown in fig. 6, and realizing with said serrations 24 a real succession of rivets 27 whose bodies are clamped between two adjacent serrations and the open heads on each face of the panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Surface Treatment Of Glass (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Nonwoven Fabrics (AREA)
  • Aftertreatments Of Artificial And Natural Stones (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP82402047A 1981-11-12 1982-11-08 Markieren von zusammengesetzten durch Glasfäden bewehrten Gipsprodukten Ceased EP0079824A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8121156 1981-11-12
FR8121156A FR2516008A1 (fr) 1981-11-12 1981-11-12 Marquage de produits composites, notamment des produits en platre renforces par des fils de verre

Publications (1)

Publication Number Publication Date
EP0079824A1 true EP0079824A1 (de) 1983-05-25

Family

ID=9263926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402047A Ceased EP0079824A1 (de) 1981-11-12 1982-11-08 Markieren von zusammengesetzten durch Glasfäden bewehrten Gipsprodukten

Country Status (13)

Country Link
EP (1) EP0079824A1 (de)
JP (1) JPS5889311A (de)
KR (1) KR840002291A (de)
AU (1) AU9029982A (de)
DK (1) DK500982A (de)
ES (1) ES517330A0 (de)
FI (1) FI823874L (de)
FR (1) FR2516008A1 (de)
GR (1) GR76747B (de)
NO (1) NO823746L (de)
PL (1) PL238980A1 (de)
PT (1) PT75842B (de)
ZA (1) ZA828274B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994002293A1 (de) * 1992-07-15 1994-02-03 Hoechst Ceramtec Aktiengesellschaft Verfahren zum strukturieren von keramischen grünkörpern
WO2000053860A1 (en) * 1999-03-10 2000-09-14 Bpb Plc A gypsum board and a method for its manufacture
US6306237B1 (en) * 1995-11-28 2001-10-23 Roy D. Wemyss Lamination of surfaces using pressurized liquid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU613104B2 (en) * 1987-11-06 1991-07-25 Brickworks Limited Manufacturing of bricks
FR3029811B1 (fr) * 2014-12-16 2019-04-12 Xavier Rocher Dispositif et procede de fabrication de structures tridimensionnelles realisees en couches successives

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1404887A (fr) * 1964-08-11 1965-07-02 Asbestbetonwerk Porschendorf V Procédé et dispositif pour la fabrication de plaques planes, notamment en ciment d'amiante avec des bords spécialement conformés
US3985848A (en) * 1974-12-05 1976-10-12 Bredero Price, B.V. Method for cutting concrete coated pipe
FR2376272A1 (fr) * 1977-01-03 1978-07-28 Douglass James Element de construction en forme de panneau, notamment en platre
FR2448008A1 (fr) * 1979-02-05 1980-08-29 Saint Gobain Elements de construction en platre pour l'amenagement de structures de batiments
GB1586512A (en) * 1978-05-31 1981-03-18 Eternit Fab Dansk As Building sheets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1404887A (fr) * 1964-08-11 1965-07-02 Asbestbetonwerk Porschendorf V Procédé et dispositif pour la fabrication de plaques planes, notamment en ciment d'amiante avec des bords spécialement conformés
US3985848A (en) * 1974-12-05 1976-10-12 Bredero Price, B.V. Method for cutting concrete coated pipe
FR2376272A1 (fr) * 1977-01-03 1978-07-28 Douglass James Element de construction en forme de panneau, notamment en platre
GB1586512A (en) * 1978-05-31 1981-03-18 Eternit Fab Dansk As Building sheets
FR2448008A1 (fr) * 1979-02-05 1980-08-29 Saint Gobain Elements de construction en platre pour l'amenagement de structures de batiments

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ENGINEERING, vol. 217, no. 4, avril 1977, pages 297-301, Londres (GB); *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994002293A1 (de) * 1992-07-15 1994-02-03 Hoechst Ceramtec Aktiengesellschaft Verfahren zum strukturieren von keramischen grünkörpern
US6306237B1 (en) * 1995-11-28 2001-10-23 Roy D. Wemyss Lamination of surfaces using pressurized liquid
WO2000053860A1 (en) * 1999-03-10 2000-09-14 Bpb Plc A gypsum board and a method for its manufacture

Also Published As

Publication number Publication date
KR840002291A (ko) 1984-06-25
FR2516008B1 (de) 1984-04-20
FR2516008A1 (fr) 1983-05-13
AU9029982A (en) 1983-05-19
ES8308748A1 (es) 1983-10-16
PT75842B (fr) 1985-02-27
ZA828274B (en) 1984-01-25
FI823874A0 (fi) 1982-11-11
NO823746L (no) 1983-05-13
JPS5889311A (ja) 1983-05-27
PL238980A1 (en) 1983-07-18
ES517330A0 (es) 1983-10-16
PT75842A (fr) 1982-12-01
GR76747B (de) 1984-08-30
DK500982A (da) 1983-05-13
FI823874L (fi) 1983-05-13

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