EP2576168A1 - Transporting belt - Google Patents
Transporting beltInfo
- Publication number
- EP2576168A1 EP2576168A1 EP11723946.7A EP11723946A EP2576168A1 EP 2576168 A1 EP2576168 A1 EP 2576168A1 EP 11723946 A EP11723946 A EP 11723946A EP 2576168 A1 EP2576168 A1 EP 2576168A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor belt
- recesses
- belt according
- gypsum
- plasterboard
- 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.)
- Granted
Links
- 229910052602 gypsum Inorganic materials 0.000 claims description 28
- 239000010440 gypsum Substances 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000011505 plaster Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004464 cereal grain Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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 covering or wearing layers, which may consist of different materials (eg rubber, rubber compounds, modified PVC mixtures)
- 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 rises, 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.
- An example of such a process is the production of plasterboard.
- the basic principle the production of plasterboard is described for example in US 2006/0029785 AI.
- Special conveyor belts are used in the gypsum plasterboard industry, so-called te Abbindeb stands or called form bands. These forming belts are located in the technological process of gypsum board production immediately after the extrusion of the still moist and moldable, infinite gypsum board strand (hereafter referred to as flat slab strand), ie at the beginning of the so-called bonding section (FIG. 1).
- 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 carton forms the bottom side of the plate raw material and thus the contact surface with 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 downwards due to the very high product requirements of the market on the finished panel side 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 object is achieved by providing a transport and forming belt for plasterboard with a support surface for product transport and at least one structure area within the support surface, wherein the at least one structural region has recesses, wherein
- the volume of the wells based on a base area of 1 cm 2 in the range of 10 to 80 mm 3 .
- 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 trans- portbandes, 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.
- the depressions can be connected to one another in a cross-linked manner so that the liquid can be liquefied.
- 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. Measurement of the width of a depression
- 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 rip magnifier with integrated scale the width of the recess is manually optically determined.
- 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, wherein both irregular structures - such as zigzag courses, roundings, etc. - can be used, as well as a völ lig 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 structural region outside the regions of the depression is preferably flat, ie. the non-recessed areas have as good a matching height as possible.
- FIG. 1 shows schematically a process from the production of gypsum boards at the beginning of the raw board forming strand. Visible is the supply of the visible side carton (2) and the backside carton (1), feeding the gypsum slurry from the main mixer (3) and forming the raw plate strand (5) in the extruder (4) with subsequent shaping on the transport and forming belt (6).
- FIG. 2 shows a surface tape according to the example.
- 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.
- the invention also provides a method for producing a plasterboard, comprising the following steps: providing a settable 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.
- a material for the bearing surface are in particular natural and synthetic rubbers, but also a variety of polymers such. B. also modified PVC.
- Such conveyor belts may have fabric structures inside, but these are then covered with a cover / wear layer.
- Example 1 The invention is further illustrated by the following example: Example 1
- a conveyor belt was subjected to UV and cold / heat treatment.
- the surface is shown in FIG. Determination of the volume
- a test piece measuring 10 * 10cm was measured. It had a thickness of 1.4 cm, so that mathematically a volume of 140 cm 3 resulted.
- 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)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11723946T PL2576168T3 (en) | 2010-06-04 | 2011-06-01 | Conveyor and method for the manufacture of gypsum plaster board |
EP11723946.7A EP2576168B1 (en) | 2010-06-04 | 2011-06-01 | Conveyor and method for the manufacture of gypsum plaster board |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10164998 | 2010-06-04 | ||
EP11723946.7A EP2576168B1 (en) | 2010-06-04 | 2011-06-01 | Conveyor and method for the manufacture of gypsum plaster board |
PCT/EP2011/059118 WO2011151401A1 (en) | 2010-06-04 | 2011-06-01 | Transporting belt |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2576168A1 true EP2576168A1 (en) | 2013-04-10 |
EP2576168B1 EP2576168B1 (en) | 2014-03-19 |
Family
ID=43066973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11723946.7A Active EP2576168B1 (en) | 2010-06-04 | 2011-06-01 | Conveyor and method for the manufacture of gypsum plaster board |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2576168B1 (en) |
ES (1) | ES2460090T3 (en) |
PL (1) | PL2576168T3 (en) |
WO (1) | WO2011151401A1 (en) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE687837C (en) * | 1936-08-20 | 1940-02-07 | J Laroche Lechat Sa Ets | Device for de-dripping wet conveyed material |
FR991280A (en) * | 1949-05-14 | 1951-10-03 | Le Caoutchouc S I T | Improvements to conveyor belts for transporting fine-grained granular materials |
CA948997A (en) * | 1971-06-09 | 1974-06-11 | Richard B. H. Sewell | Belt for picking up liquids |
JPS617117A (en) * | 1984-06-19 | 1986-01-13 | Yamauchi Rubber Ind Co Ltd | Endless belt |
DE4115615A1 (en) * | 1991-05-14 | 1992-11-19 | Rolf Weigele | Dough conveyor belt - comprises flexible plastics with structured non-stick surface |
CA2363480A1 (en) | 2001-05-14 | 2002-11-14 | Ronald F. Ryde | Grooved flexible conveyor belt |
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 |
-
2011
- 2011-06-01 EP EP11723946.7A patent/EP2576168B1/en active Active
- 2011-06-01 WO PCT/EP2011/059118 patent/WO2011151401A1/en active Application Filing
- 2011-06-01 PL PL11723946T patent/PL2576168T3/en unknown
- 2011-06-01 ES ES11723946.7T patent/ES2460090T3/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011151401A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2460090T3 (en) | 2014-05-13 |
PL2576168T3 (en) | 2014-08-29 |
WO2011151401A1 (en) | 2011-12-08 |
EP2576168B1 (en) | 2014-03-19 |
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