EP2040859A2 - Appareil à rayonnement, procédé et ensemble de revêtement par poudre de matériaux dérivés du bois - Google Patents

Appareil à rayonnement, procédé et ensemble de revêtement par poudre de matériaux dérivés du bois

Info

Publication number
EP2040859A2
EP2040859A2 EP07819896A EP07819896A EP2040859A2 EP 2040859 A2 EP2040859 A2 EP 2040859A2 EP 07819896 A EP07819896 A EP 07819896A EP 07819896 A EP07819896 A EP 07819896A EP 2040859 A2 EP2040859 A2 EP 2040859A2
Authority
EP
European Patent Office
Prior art keywords
temperature
radiation device
powder
radiation
irradiated
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Withdrawn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
EP07819896A
Other languages
German (de)
English (en)
Inventor
Gerhard Brendel
Karl-Heinz Ullerich
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.)
TGC TECHNOLOGIE BETEILIGUNGSGESELLSCHAFT MBH
Original Assignee
TGC TECHNOLOGIE BETEILIGUNGSGESELLSCHAFT MBH
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 TGC TECHNOLOGIE BETEILIGUNGSGESELLSCHAFT MBH filed Critical TGC TECHNOLOGIE BETEILIGUNGSGESELLSCHAFT MBH
Publication of EP2040859A2 publication Critical patent/EP2040859A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B05D3/0263—After-treatment with IR heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0209—Multistage baking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating

Definitions

  • the present invention relates to a method and an arrangement for powder coating of particular plate or disc-shaped wood objects and a corresponding radiation device for this purpose.
  • WO 2006/061391 A2 discloses a radiation device and a powder application station and an arrangement for coating temperature-sensitive materials and a method for this purpose.
  • the present invention relates to a further development of the devices and methods described there, so that the disclosure content of WO 2006/061391 A 2 is fully incorporated by reference into the present application.
  • WO 2006/061391 a method and a corresponding device is known, by means of which a rapid heating or heating of surfaces and in particular provided with powder MDF panels for powder coating thereof using the use of movable energy sources, in particular infrared emitters allows becomes.
  • the movement of the energy emitters takes place oscillating, preferably on a circular path or partial circular path.
  • the object to be coated with powder is moved past the energy emitters. This allows a uniform powder coating of wood-based materials without damaging the wood-based material due to a temperature load on the wood-based materials, in particular in their core area.
  • a temperature-sensitive materials and in particular wood materials such as MDF (Medium Density Fiber) elements
  • a further provided control device can control at least one of the measured area of the surface associated energy emitter.
  • a regulation to a certain temperature value or a temperature interval is possible.
  • the temperature sensors which are preferably formed by infrared sensors, are arranged so that a direct measurement of the surface temperature during irradiation possible is.
  • the temperature sensors it is also possible to simplify the device, the temperature sensors to be arranged so that a time-staggered control or regulation of the energy source is guaranteed.
  • a time-staggered control of the energy emitters on the basis of the determined temperature data is regarded as a regulation and not only an immediate regulation without a long time delay or without local offset of the arrangement of energy emitter and temperature sensor, which is also possible.
  • the control device is thus preferably designed as a control unit which automatically sets the temperature in at least one, preferably several, and in particular all areas of the irradiated surface to a predetermined temperature or a predetermined temperature interval, the measured temperature values are automatically used for control and thus for control.
  • known control techniques are used.
  • the division of the surface to be irradiated or irradiated into imaginary or virtual areas is advantageous because the temperature sensors are designed for the sake of simplicity so that they can determine the temperature only in a localized area of the object to be irradiated or irradiated , Accordingly, it is advantageous to set up the control unit such that the energy radiators assigned to this area are also controlled or regulated only for the measured area. Thus, it is possible to monitor, control or automatically irradiate only individual, critical areas of the surface to be irradiated or irradiated accordingly. However, it is advantageous if possible to monitor the entire surface to be irradiated or irradiated by means of temperature sensors and to control or regulate the energy emitters accordingly. Accordingly, the surface to be irradiated or irradiated is subdivided into a multiplicity of imaginary regions, for each of which one or more temperature sensors are provided.
  • the temperature sensors can be correspondingly combined in groups, so that from the various temperature sensors of a group for an area to be monitored, a temperature average is formed.
  • a plurality of energy radiators can also be combined to form a group, in which case the energy radiators of this group are uniformly controlled and / or regulated by the control unit.
  • the imaginary regions of the surface to be irradiated or to be irradiated are arranged next to or above one another transversely to a transport direction of the surface to be irradiated or to be irradiated.
  • the temperature sensors can be arranged spatially spaced from the energy emitters, whereby a greater temporal offset of the temperature measurement for irradiation with the corresponding energy emitter can occur. This simplifies the apparatus required for the dynamic arrangement with moving energy emitters and moving object. In order to keep the control effort low, it is advantageous to arrange the temperature sensors equidistant from the energy emitters assigned to them, so that the same temporal offset of the temperature measurement takes place for all temperature sensors.
  • the temperature sensors can be arranged on a part of a circular path, an ellipse or an oval.
  • the objects to be irradiated are preferably MDF boards which are to be coated on both main surfaces and the peripheral end faces, it is also advantageous to provide the temperature sensors on both sides of the transport path for the objects to be irradiated, as well as with the energy emitters he follows.
  • the temperature sensors are preferably infrared sensors which can detect the radiation emitted by the surface. Since the emission values depend on the objects to be irradiated and in particular the applied powder or its color, the control device and / or the temperature sensors are designed such that the measured value determination is adjusted automatically, eg by color matching. It is also possible that by means of a database corresponding emission values for the to be irradiated Objects and in particular the corresponding powder are stored, so that the controller can make a corresponding adjustment of the evaluation or determination of the temperature values based on this information.
  • the radiation power of the energy radiator is continuously made by the control device, so that a targeted and accurate adjustment of the radiation power is possible.
  • irradiation in the near-infrared range is advantageous, in which case it is possible in particular to use halogen-infrared radiators.
  • a process is proposed for powder coating wood-based materials, in particular MDF boards, in which first powder is applied in a powder application station and subsequently the powder is heated or melted with a radiation device to be finally cured in a curing and curing area.
  • the wood moisture of the objects to be coated is hereby adjusted to 7 to 7.8 percent by weight of water, since this produces optimum results both for powder application and for curing and crosslinking, without causing damage to the wood-based material.
  • the curing and crosslinking of the powder can be carried out after the first heating by a first radiation device according to the invention after the powder application station either in a Um Kunststoffofen and / or by means of a second radiation device, which preferably has UV emitters for UV-curing powder.
  • a convection oven an air speed of more than 5 m / s is preferably set.
  • the powder is applied electrostatically, wherein a particularly homogeneous application of the powder is made possible by the use of a low leakage current in the range of 1 to 10 ⁇ A.
  • the temperature treatment of the powder by the first radiation device for rapid heating is preferably to ensure that the surface temperature of the object or the powder is greater than 110 0 C, in particular greater than 14O 0 C and preferably in the range of 140 0 C to 160 0 C. to ensure a rapid fusion or rapid reaction of the powder.
  • the core temperature of the material to be coated should not rise above 100 0 C and preferably below 90 0 C.
  • the surface temperature of the object should be above 110 0 C or in the range of 115 0 C to 150 0 C and especially 14O 0 C to 15O 0 C and thereby for a certain time kept constant or gradually lowered.
  • the core temperature of the object below 100 0 C should be used during any time, including during the curing and crosslinking, preferably be maintained below 9O 0 C and in particular in the range from 70 0 C to 9O 0 C.
  • a corresponding climatic chamber can be provided with a corresponding arrangement for coating wood-based materials.
  • FIG. 1 shows a plant according to the invention for powder coating of MDF boards.
  • Fig. 2 is a side view of a radiation device according to the invention
  • 3 shows a sectional view through the radiation device from FIG. 2 transversely to the transport plane
  • FIG. 5 is a schematic representation of the arrangement of the temperature sensors in a radiation device according to the invention.
  • Fig. 1 shows a schematic representation of the structure of a plant according to the invention for powder coating of MDF boards 8, as they are used in the furniture industry.
  • the plant has a total of six processing stations 1 to 6, which passes through the MDF plate 8 by means of a transport device 7.
  • the transport device 7 is realized by a rail arrangement, are received in the brackets 10, to which the MDF board 8 can be mounted.
  • the MDF board 8 is processed by means of a grinder 9 on the surfaces so that a smooth clean surface is formed.
  • the MDF plate is flamed in the processing station 2 by means of a gas burner 38 shown schematically on the surface to remove any remaining after the grinding process wood fibers and to densify the surface by the action of flame.
  • a plasma treatment plant (not shown) may be provided after or instead of the processing station 2 with the flaming, wherein the plasma action on the surface likewise results in a densification of the surface.
  • a painting system with a spray booth 1 1 and a spraying device 14 is shown, by means of which water vapor supported painting a primer is applied to the surface of the MDF board 8.
  • the primer serves to seal the surface gas-tight and to fill the pores in the surface of the MDF board 8, as in the patent application of Patrick Oliver Ott regarding a method for the pretreatment of surfaces of wood and / or wood fiber composite blanks for subsequent powder or foil coating is described.
  • a water-soluble primer which may be a commercially available primer, is preferably used, since this leads to particularly smooth and dense surface layers in connection with a steam-assisted process, as described in the patent application DE 10 2004 012 889.
  • a steam generating device 12 is provided in addition to the paint supply device 13 in the painting of the processing station 3.
  • the primed MDF board 8 can be transferred immediately after painting in a continuous process in the next processing station, since the high temperature of the water vapor is a very fast drying. If necessary, a buffer station not shown here can be installed in the arrangement in order to realize a certain drying time for the MDF boards 8.
  • an electrostatic powder application such as spray guns 16, powder reservoir 15, feed lines 20 u.
  • a discharge element 18 is provided, which is grounded via the line 19 and serves to dissipate excess charge and to smooth the field line pattern on the object 8 to be coated in order to increase the powder application to the powder Avoid edges where field concentrations can form.
  • the current to be set is chosen to be very small, preferably in the range from 1 to 10 ⁇ A.
  • powder application means 16 in the form of a spray gun 16 are provided in the powder application station 4 for each side of the MDF board 8, with diverting elements 18 being arranged opposite the spray guns 16.
  • the second powder application spray gun 16 is also not shown, since it is covered by the discharge element 18. Only the supply line 20 can be seen.
  • the diverting element 18 is designed as a lattice-shaped structure in which the lattice bars are designed as flat bars with a depth of a few centimeters (4 to 6 cm) and a thickness of approx.
  • the MDF plate 8 is transferred by the transport device 7 with the applied powder in the processing station 5, in which a radiation device 21 according to the invention with short-wave infrared radiators or near infrared emitters, in particular halogen emitters is provided to that on the surface of the MDF -Latte 8 powder to melt by a very fast and short heating.
  • a radiation device 21 according to the invention with short-wave infrared radiators or near infrared emitters, in particular halogen emitters is provided to that on the surface of the MDF -Latte 8 powder to melt by a very fast and short heating.
  • Figures 2 and 3 show the Strahluns réelle invention or a part thereof in greater detail.
  • the radiation device 21 has, as can be seen in particular in Figure 3, two opposing circular rings 40 on which the energy emitter 41 are arranged about a rotation axis parallel to the transport plane 48 tilting or pivoting. Between the rings 40 with the energy emitters 41, the transport plane 48 for the MDF boards 8 runs.
  • the ring 40 is rotatably supported by spokes 42 on a rotation axis 43 and connected there to an eccentric 44, on which in turn a rod 45 is arranged.
  • the rod 45 is also connected at its other end with an eccentric 47, which is arranged for example on an electric motor 46.
  • the rotational movement of the electric motor 46 is first converted into a reciprocating movement of the rod 45 and via the eccentric 44 again into a pivoting movement of the ring 40.
  • the energy emitters 41 in the ring plane 40 are moved back and forth about the axis 43 by means of a pivoting movement, so that they transfer their energy or heat in a bent region to the MDF plate 8.
  • the rings 40 be formed perpendicular to the transport plane 48.
  • the radiation device 21 has a temperature sensor arrangement by means of which the surface temperatures on the MDF board 8 can be measured without contact.
  • the holder is shown in Figures 4 (a) to (c) in different side views.
  • the stator 50 for the temperature sensor arrangement is an arcuate plate, which is arranged according to the representation of FIG. 5 to the ring 40, in each case one stator on each side of the transport plane 48.
  • the temperature sensors 51 are also arcuate in accordance with the embodiment 5 in a circular portion corresponding to the ring 40, arranged so that the temperature sensors 51 are provided equidistant to corresponding energy beams 41 on the ring 40. This ensures that the temperature measurement takes place according to the same path traveled by the MDF board after irradiation in the transport direction (see arrow in FIG. 5).
  • the energy emitter can be moved by the oscillating movement of the ring 40 each over a certain range of the surface to be irradiated of the MDF board 8, the energy emitters certain temperature sensors 51 can be assigned, the temperature detection in the corresponding areas 58 of the MDF board to capture.
  • These areas 58 are arbitrary imaginary areas, which are delimited by dashed lines in FIG. 5, and are only influenced by the temperature sensors and / or energy radiators used.
  • the measured values measured by the temperature sensors 51 are transmitted to a control device 52, which controls or regulates the assigned energy emitter 41 on the basis of the determined temperatures for the individual regions 58 of the surface to be irradiated.
  • a plurality of temperature sensors and / or energy emitters 51 may each be combined into groups having either a uniform measurement, e.g. provide an average value and / or be controlled or regulated in a uniform manner.
  • the MDF plate 8 processed in this way passes indirectly in a convection oven 6 as the sixth processing station (see Fig. 1), in which in several zones, for example three zones corresponding heated circulating air, for example, through inlet openings 24 from bottom to top (see arrow 27) is guided to the suction 25.
  • the speed of the circulating air very high, for example in the range of more than 1 m / s, preferably greater than or equal to 2 m / s, in particular greater than or equal to 5 m / s, so that over a long distance a constant temperature profile can be set.
  • a further radiation device 21 can be provided in particular with UV lamps.
  • a corresponding UV curing with a radiation device equipped with UV lamps 21 may also be provided instead of the recirculating oven 6 or be integrated in these.
  • the inventive method as has been illustrated in the embodiment, very uniform powder coatings can be produced on MDF boards, without causing damage to the MDF board.
  • MDF boards should preferably have a residual moisture content of between 7 and 7.8% by weight, which can be achieved, for example, by storage in climatic chambers or the like.
  • the resistance in this case has a value of about 10 ⁇ ⁇ .
  • the MDF boards have a density of about 800 kg / m 3 +/- 20 kg / m 3 .
  • the conductivity can be achieved for example by appropriate additives or by conductive primer coatings.
  • FIGs 6 a) and b) show two further alternatives of the embodiment of a radiation device 21 according to the invention, wherein in the partial image a) the ring 40 'has an oval shape along the oval, the energy emitters 41 are arranged in a similar manner as in The embodiment of Figures 2 to 5. Accordingly, only a few energy emitters 41 are shown in the figure ⁇ a.
  • Figure 6b shows a spiral 40 "which may also be used in place of the annulus 40 in the radiation tool 21.
  • a spiral 40 " which may also be used in place of the annulus 40 in the radiation tool 21.
  • FIGS. 2 to 5 show a spiral 40 "which may also be used in place of the annulus 40 in the radiation tool 21.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

L'invention concerne un appareil à rayonnement permettant d'irradier des surfaces, en particulier de chauffer rapidement des surfaces d'objets (8) en particulier déplacés devant l'appareil à rayonnement, en particulier d'éléments MDF lors d'un revêtement par poudre. L'appareil à rayonnement comporte plusieurs diffuseurs d'énergie (41) répartis sur la surface d'irradiation, de préférence des émetteurs de rayonnement thermique, en particulier des émetteurs de rayonnement infrarouge ou proche infrarouge, placés en particulier de manière mobile sur au moins un support de préférence mobile (40, 40', 40"). Selon l'invention, au moins un capteur de température à mesure sans contact (51), capable de mesurer la température de l'objet irradié dans au moins une zone (58) de la surface irradiée de l'objet (8), et un dispositif de commande (52) sont conçus de sorte que ledit dispositif de commande (52) peut recevoir la température mesurée par le ou les capteurs de température (51) et commande au moins un diffuseur d'énergie (41) associé à la zone (58) de la surface d'irradiation pour laquelle la mesure de température est effectuée. L'invention concerne également un ensemble et un procédé de revêtement par poudre d'objets en bois en forme de disque ou de panneau, de préférence de panneaux MDF, au moyen d'un ensemble comprenant un poste d'application de poudre (4), un premier appareil à rayonnement, en particulier selon une des revendications précédentes, et une zone (6) destinée au durcissement ou à la réticulation de la poudre, comprenant en particulier une étuve à circulation d'air et/ou un second appareil à rayonnement. Le premier appareil à rayonnement (21) est placé entre le poste d'application de poudre et la zone de durcissement/réticulation et le second appareil à rayonnement est placé dans la zone de durcissement/réticulation, en particulier la zone de postcuisson, l'humidité du bois des objets à traiter étant réglée sur 7 à 7,8 en pourcentage massique d'eau.
EP07819896A 2006-07-11 2007-06-20 Appareil à rayonnement, procédé et ensemble de revêtement par poudre de matériaux dérivés du bois Withdrawn EP2040859A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006032111A DE102006032111A1 (de) 2006-07-11 2006-07-11 Strahlungsgerät, Verfahren und Anordnung zur Pulverbeschichtung von Holzwerkstoffen
PCT/EP2007/056160 WO2008006681A2 (fr) 2006-07-11 2007-06-20 Appareil à rayonnement, procédé et ensemble de revêtement par poudre de matériaux dérivés du bois

Publications (1)

Publication Number Publication Date
EP2040859A2 true EP2040859A2 (fr) 2009-04-01

Family

ID=38523412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07819896A Withdrawn EP2040859A2 (fr) 2006-07-11 2007-06-20 Appareil à rayonnement, procédé et ensemble de revêtement par poudre de matériaux dérivés du bois

Country Status (5)

Country Link
US (1) US20100028555A1 (fr)
EP (1) EP2040859A2 (fr)
DE (1) DE102006032111A1 (fr)
RU (1) RU2457907C2 (fr)
WO (1) WO2008006681A2 (fr)

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DE102005003802A1 (de) * 2004-12-10 2006-06-14 Nütro Maschinen- und Anlagenbau GmbH & Co. KG Strahlungsgerät sowie Pulverauftragsstation und Anordnung zur Beschichtung von temperatursensiblen Materialien und Verfahren hierzu
WO2011119525A2 (fr) 2010-03-22 2011-09-29 University Of Florida Research Foundation, Inc. Systèmes de filtres infrarouges, procédés d'utilisation, et procédés de désinfection et de décontamination
EP2415615B1 (fr) * 2010-08-04 2014-01-15 Faber- Castell AG Procédé de fabrication de stylos, crayons et feutres
SE536336C2 (sv) * 2011-12-20 2013-08-27 Pivab Ab Exponeringskammare för härdning av strålningshärdbara beläggningar
US20140295095A1 (en) * 2013-04-02 2014-10-02 Robert Langlois In-Line Powder Coating of Non-Conductive Profiles Produced in a Continuous Forming Process such as Pultrusion and Extrusion
RU2640771C2 (ru) * 2016-03-09 2018-01-11 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева-КАИ" (КНИТУ-КАИ) Способ отверждения термореактивных полимерных порошковых покрытий
CN108410710A (zh) * 2018-03-27 2018-08-17 天津市天圣颐和科技有限公司 一种利用秸秆制备育秧盘的系统及生产方法

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Also Published As

Publication number Publication date
WO2008006681A2 (fr) 2008-01-17
US20100028555A1 (en) 2010-02-04
WO2008006681A3 (fr) 2008-08-14
RU2457907C2 (ru) 2012-08-10
RU2009103774A (ru) 2010-08-20
DE102006032111A1 (de) 2008-01-24

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