EP2632670A1 - Befeuchtungsanlage für pressen - Google Patents
Befeuchtungsanlage für pressenInfo
- Publication number
- EP2632670A1 EP2632670A1 EP11778569.1A EP11778569A EP2632670A1 EP 2632670 A1 EP2632670 A1 EP 2632670A1 EP 11778569 A EP11778569 A EP 11778569A EP 2632670 A1 EP2632670 A1 EP 2632670A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- material cake
- moistening
- application
- moistening agent
- 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- Withdrawn
Links
- 239000000463 material Substances 0.000 claims abstract description 183
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 99
- 239000011230 binding agent Substances 0.000 claims abstract description 14
- 239000002023 wood Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000003906 humectant Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 5
- 238000007774 anilox coating Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 239000003973 paint Substances 0.000 description 6
- 239000000080 wetting agent Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000015250 liver sausages Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/02—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
- B05C1/025—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles to flat rectangular articles, e.g. flat sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
- B27N3/186—Separating the cauls from the boards
Definitions
- the present invention relates to a moistening system for presses for pressing mixed with binder material cake, preferably continuously operating presses, in particular for the production of material plates, preferably Holztechnikstoffpiatten.
- the invention further relates to a continuous press with such a humidification system and a method for producing pressed material plates and a humidifying agent for the production of material plates.
- Such moistening has the disadvantage that a metering of the moistening agent due to the application of the moistening agent in the vaporous state is only possible in a very inaccurate manner.
- exposure to steam is generally associated with relatively high losses of humectant.
- the evaporation also leads to the formation of condensation on machine parts, the condensed moistening agent then being able to drip onto the material cake. This can affect the pressed plate optically or lead to procedural disadvantages.
- the humidification should allow as possible a good penetration of the material cake with steam.
- the Erftndungshacke humidification for presses for pressing material offset with binder material cake, preferably continuously operating press, in particular for the production of material plates, preferably wood-based panels, has a first Befeuchtungsmittef-applying device.
- the first moistening agent application device has a first application roll, which can be set from above against the material cake conveyed by a conveying device of the press.
- against thesecondswaize at least a first metering roller can be adjusted.
- the at least one first dosing trough dips into a first humidifying bath for receiving wetting agents.
- against each first Dosierwaize at least one stripping roller can be adjusted, via which the amount of humidifier received by each first metering roller is adjustable.
- the moistening agent can advantageously be transferred to the material cake. Since the humectant is applied in liquid form and transferred directly from the applicator roll to the cake, the loss of humectant during application is extremely low.
- the high moisture content on the surface causes a sudden evaporation, so that a jet of steam passes through the material cake.
- a particularly good heat penetration of the material cake is possible.
- free OH groups can also form, which can be advantageous in the activation of a binder. Due to the good heat penetration of the material cake due to the steam shock, the setting of the binder, in particular in the interior of the material cake, further accelerated.
- the moisture on the surface also causes an improved surface smoothness of the finished pressed plate, whereby the grinding allowance in the further processing is lower. Furthermore, an improved surface smoothness causes the pores on the surface of the plate to be smaller, so that a blocking effect arises compared with later applied lacquers. The later applied paints therefore do not penetrate alizu deep into the plate, so that the paint consumption is much lower.
- the pate can even be printed without first applying a filler to improve the surface smoothness.
- a first metering roller is provided, wherein a plurality of stripping rollers are arranged on the first metering roller over the width of the first Dosierwaize, such that over the width of the first metering roller, the amount of moistening agent received by the first metering roller is differently adjustable.
- the stripping rollers are preferably offset from one another and arranged overlapping in the edge region of the stripping rollers.
- the amount of moistening agent received by the metering roller can be set differently over the width of the metering roller. For example, it may be provided that a smaller amount of humidifying agent is stripped off the Abstreifwaize at the Dosierwaize in their midst than in the edge regions and, correspondingly, a higher amount of humidifying agent is transferred to the center of the material cake. As a result, for example, a deformation of the material cake, for example, the so-called Teller bin counteracted.
- the moistening system may provide a second moistening agent applicator having a second applicator roll and at least one second metering roll, the second applicator roll being susceptible from below to the material cake conveyed by the conveyor of the press and having a second moistening center bath, the at least one second metering roller being in the second moistening center bath dips in to receive moistening agent
- the second wetting agent applicator has a second applicator roll, as well as the first
- the humectant are transmitted from the bottom very good dosterbar on the material cake.
- the first and / or the second Dosierwaize is an anilox roller, wherein the first and / or the second metering roller preferably has an elastically compliant surface and / or a surface structure with a stochastic pattern.
- Such metering rollers can advantageously absorb the liquid moistening medium and transferred in an advantageous manner to the material cake.
- An elastically yielding surface of the dosing rolls causes a particularly advantageous transfer of the moistening agent to the material cake. It has been found that a surface structure with a stochastic pattern produces a particularly uniform moistening agent transfer to the material cake.
- the second wetting agent applicator may be disposed in an opening in the conveyor of the press.
- the second applicator roll is arranged below the first applicator roll, wherein preferably the distance between the firstsecondswaize and the second applicator roll is adjustable so that the distance is less than the thickness of the material cake.
- the material cake By placing the second applicator roll below the first applicator roll and providing a distance between the first and second applicator rolls that is less than the thickness of the material cake, the material cake is caused to collapse as it passes through the first and second applicator rolls.
- Auffcragsvornchtung relaxes the cake, so that the moistening agent applied to the surface of the top and bottom of the material cake is sucked when relaxing, due to a resulting suction in the interior of the material cake. This results in the material cake thus a so-called "sponge effect".
- the invention may be provided that the second applicator roll is movable orthogonal to the material cake, such that the opening in the conveyor of the press, in which the second humidifying application device is arranged, is closable, preferably for the orthogonal movement of the second applicator roll, the second humidifying applicator is movable.
- This has the advantage that the moistening system according to the invention can also be used only for one-sided moistening of the material cake. In this case, the second applicator or the second Befeuchtungsscharguessvorraum be moved away from the material cake, so that the opening in the conveyor of the press can be closed.
- the material cake can not break because the opening in the conveying device of the press can be closed so that the conveying device is arranged continuously below the material cake ,
- the distance between the first and the second applicator roll is also adjustable in an advantageous manner.
- the firstsecondswaize the first moistening agent application device has a larger diameter than the second applicator roll of the second Humidifying agent applicator, wherein preferably the ratio of the diameter of the first applicator roll to the diameter of the second applicator roll is between 1.3 and 2.5 Such a ratio has been found to be particularly advantageous.
- the first momentswaSze forms a larger contact surface with the material cake, so that the second application roller can press from below against the material cake in an advantageous manner.
- the space for the second moistening applicator device is limited by the arrangement in an opening of the conveyor of the press, so that a smaller configuration of the second applicator roll is advantageous.
- the invention further provides a continuously operating press for the production of material plates, preferably wood-based panels, which has a humidification system according to the invention. It can be provided that the conveyor of the continuously operating press is arranged circumferentially around the second moistening agent application device. This has the particular advantage that the conveying device arranged before and after the second moistening device always has the same speed since it is the same continuous conveying device.
- the conveyor is a conveyor belt, wherein the opening in the conveyor by two spaced guide rollers around which the conveyor belt rotates, is formed.
- Such a conveyor has been found to be particularly advantageous.
- the deflection rollers for closing the opening are mutually movable. In this way, the opening in the conveyor, in which the second humidifying applicator is arranged, closed in a particularly simple manner. At the same time it can be ensured in an advantageous manner that when the opening is closed a virtually uninterrupted conveyor is formed.
- the invention further provides a method for producing pressed material plates, preferably wood-based panels, with the following steps:
- Pre-pressing material material into a material cake moistening the material cake from above via an applicator roll, applying release agent,
- the method according to the invention may further comprise the following step:
- the moistening agent can be well metered, while at the same time the loss of moistening agent being kept very low.
- the steam produced during the pressing of the material cake which is to penetrate into the interior of the material cake, can be produced in a particularly advantageous manner, since the burst of steam penetrates from above and below into the material cake.
- the moistening of the material cake from below deformation effects of the material cake, resulting from the moistening.
- the method according to the invention further provides that the amount of moistening agent transferred to the material cake can be varied over the width of the material cake, with the amount of moistening agent being at the center of the material cake Materiaikuchens increases. Due to the variable adjustment of the amount of humidifying agent, deformation effects of the material cake due to moistening can likewise be counteracted in an advantageous manner.
- the inventive method provides in particular that the Materiaikuchen is pressed together during humidification. After compression, the material cake can relax again and there is a suction effect that holds the moistening agent to the material cake and conveyed into the material cake inside. This is particularly advantageous on the lower surface of the Materiaikuchens because the suction effect of gravity counteracts.
- the inventive method provides in particular that a press according to the invention is used.
- the continuous press according to the invention and the method according to the invention in particular between the application of moistening agent and the application of separating agent! to distinguish.
- the moistening agent should be drawn into the material cake on the material cake in order to produce a burst of steam during pressing, which penetrates into the interior of the material cake in order to accelerate the setting of the glue in an advantageous manner.
- release agent is applied to the surface of the Materiaikuchens immediately before the press, which allows a separation of the press from the Materiaikuchen after the press in an advantageous manner. The release agent must therefore necessarily remain on the surface of the Materiaikuchens.
- targeted moistening of the material cake can take place, the moisture remaining on the surface or in the region near the surface.
- the inner area of the material cake has a lower moisture content.
- the interior of the material cake can have a moisture content of 6%, which is thus lower than the moisture content of the material cake than in the process known from the prior art.
- a lower energy input is needed for drying the material cake.
- the moisture application provided on the surface of the material cake according to the invention increases the moisture content of the material cake only in such a way that an effective burst of steam takes place in the interior of the material cake.
- the moisture content of the material cake is lower overall, so that a lower energy input is necessary, resulting in a higher energy efficiency.
- a faster production can take place.
- the application of the moistening agent takes place very close to the press, for example 5 to 6 m in front of the press, so that there is a very short path between application of the moistening agent and the press. This can be achieved in particular that humidification! remains in the surface area of the material cake.
- Fig. 1 a humidification system according to the invention schematically in the
- FIG. 2 is a side view of a first moistening agent application device according to the invention
- Fig. 3 shows a first humidifying agent application device according to the invention schematically in plan view
- Fig. 4 shows a second humidifying application according to the invention schematically in the side view schematically when closing the opening of the conveyor of the press.
- a moistening system 1 according to the invention for presses 100 for pressing mixed with binders material cake 200 is shown schematically in a side view.
- the moistening system 1 is arranged in the region of a conveying device 300 of the press 100, via which the material cake 200 is fed to the press 100.
- the press 100 can be any type of press for producing sheets of material, usually consists of a pressing section formed by pressing belts and a separating media application device arranged in front of the pressing section.
- the moistening system 1 serves to introduce moisture into the material cake 200.
- the moisture is used to produce a steam pulse in the area of the pressing bands, which usually have a temperature of about 250 ° C., in the material cake
- Material cake penetrates and penetrates the material cake.
- heat is transported into the interior of the material cake, which is conducive to the setting of the binder in the material cake.
- free OH groups can form, which can activate the binder.
- the moistening system 1 consists of a first moistening agent application device 3 and a second moistening application device 5.
- the first moistening agent application device 3 moistens the upward surface of the material cake 200, while the second moistening agent application device 5 subjects the downward surface of the material cake 200 moistened.
- the first moistening agent application device 3 consists of a first application roller 7, which can be attached to the material cake 200 from above.
- the material cake 200 is conveyed via the conveyor 300 of the press 100.
- a first metering roller 9 is arranged, which is adjustable against the first applicator roll.
- the metering roller 9 dips into a Befeuchtungsmitteibad 11 and takes humidifying and transfers it to the first applicator roll 7,
- the first dipper roller 9 before a plurality of stripping rollers 13 the are indicated schematically in Fig. 1.
- the arrangement of first application roller 7, first metering roller 9 and stripping rollers 13 can be seen in FIGS. 2 and 3.
- the second moistening agent application device 3 is arranged in an opening 302 of the conveyor 300 of the press 100.
- the second moistening agent application device 5 consists of a second application roller 15 which transfers moistening agents from below to the material cake 200.
- a second metering roller 17 is arranged, which is adjustable against the second application roller 15.
- the amount of humidifier which are transferred from the second humidifying on the material cake 200, on the second Dosing roller 17 arranged scraper or stripping rollers, which are not shown in Fig. 1, is adjustable.
- the second moistening agent application device 5 is set against the material cake 200 with the second application roller 15 such that the distance d between the second application roller 15 and the first application roller 7 of the first Humidifying agent application device 3 is less than the thickness D of the material cake 200. In this way, the material cake 200 is slightly compressed when passing through the moistening system 1.
- the Materlaikuchen 200 can then relax again, with the relaxation of the material cake 200, a negative pressure errt inside of the material cake 200 is created, which causes the applied to the upper and lower surfaces of the material cake 200 moistening! is sucked into the material cake 200.
- the first applicator roller 7 of the first moistening agent application device is substantially larger in the embodiment shown in FIG. 1 than the second applicator roller 15 of the second moistening agent application device 5.
- the ratio between the first application roller 7 and the second application roller 15 can, for example, be between 1.3 and 2.5 ,
- the first application roller thus has a larger contact surface with the material cake 200, so that the second application roller 15 when pressed against the material cake 200 can press this against the first application roller 7 in an advantageous manner.
- the material cake 200 is pressed more strongly on the underside than on the contact surface between the first applicator roll and the material cake, so that the so-described effect on the underside occurs particularly strongly.
- the moistening agent applied from below onto the material cake 200 is advantageously sucked into the material cake 200 and held there, since the suction effect counteracts gravity.
- the second wetting agent application device is arranged vertically movable, so that the second wetting agent application device of the Material cake 200 can be moved away, in a space formed by the conveyor 300 free space 304th
- the opening 302 in the conveyor 300, via which the material cake 200 is accessible from below for the second humidifying agent application device, is formed by two deflection rollers 306. About the Umlenkrolien 306, as shown in Fig. 4 it can be seen, the opening 302 closed.
- the first humidifying agent applying device 3 is schematically shown in the side view and the plan view.
- the amount of moistening agent transferred from the metering roller 9 to the applicator roller 7 is set via a plurality of stripping rollers 13 on the first metering roller 9.
- the stripping rollers 13 may be formed as Gautschwalzen.
- the Befeuchtungsmittefmenge can be set differently, it is possible that, for example, in the middle of the material cake 200, a larger amount of moistening agent is applied, as in the lateral edge regions of the material cake 200. In this way Furthermore, counteracted that the Materiaikuchen 200 due to the introduction of humidifying agents.
- the second moistening agent application device 5 is shown in a state in which it has been moved away from the material cake 200, not shown in Fig. 4.
- the opening 302 in the conveyor 300 can be closed by the pulleys 306 are moved to each other. As a result, the opening 302 can be closed and a virtually continuous conveying surface of the conveyor 300 is formed.
- the conveyor 300 forming the conveyor belt has buffer areas which allow for the movement of the deflection rollers 306 necessary steering changes.
- the humidifier system according to the invention can also be operated only with a one-sided humidification from above via the first moistening agent application device. It is particularly advantageous if the material cake 200 is not or only slightly precompressed so that it threatens to break at the transition point between the conveyor and the second humidifier application device.
- the first and second metering rollers 9, 17 may each be an anilox roller having an elastically compliant surface and a surface structure with a stochastic pattern. Such metering rollers have been found to be particularly advantageous for the transfer of moistening agents to the applicator rollers.
- the inventive method for the production of pressed material plates possible.
- Material material is first pre-pressed to the material cake 200.
- the material cake 200 is moistened from above with the aid of the first application roller 7.
- the material cake 200 can also be moistened from below via the second application roller 15.
- the press 100 the application of release agent and the pressing of the material cake 200 to a material plate.
- the application of the moistening agent to the material cake 200 takes place at a considerable distance from the press 100, so that the moistening agent can penetrate into the interior of the material cake 200, inter alia, by the suction effect which results from the brief compression of the material cake 200 in the moistening system 1.
- a release agent applied in the press is merely applied to the surface of the material cake 200 and is intended to remain thereon.
- the humectant vaporizes upon compression of the material cake and generates a burst of steam which permeates the material cake.
- heat is conveyed into the interior of the material cake 200, so that the binder contained in the material cake can set in an advantageous manner and very quickly.
- the burst of steam free OH groups that can activate the binder.
- the amount of moistening agent transferred to the material cake 200 can be metered very well. Since the moistening agent is transferred by means of rollers, the loss of moistening agent during transfer is very low. By applying the humectant, both from above and from below, it is at least largely prevented that deformations of the material cake 200, such as the so-called Teller bin, can occur. In order to counteract these and also other deformation effects due to the moistening of the material cake 200, moreover, the amount of moistening agent transferred on the material cake 200 over the width of the material cake 200 can be adjusted differently.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010049777.0A DE102010049777B4 (de) | 2010-10-29 | 2010-10-29 | Befeuchtungsanlage für Pressen |
PCT/EP2011/069003 WO2012056007A1 (de) | 2010-10-29 | 2011-10-28 | Befeuchtungsanlage für pressen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2632670A1 true EP2632670A1 (de) | 2013-09-04 |
Family
ID=44906088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11778569.1A Withdrawn EP2632670A1 (de) | 2010-10-29 | 2011-10-28 | Befeuchtungsanlage für pressen |
Country Status (6)
Country | Link |
---|---|
US (1) | US9186811B2 (de) |
EP (1) | EP2632670A1 (de) |
CN (1) | CN103260839B (de) |
CA (1) | CA2815912A1 (de) |
DE (1) | DE102010049777B4 (de) |
WO (1) | WO2012056007A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007001302B4 (de) * | 2007-01-03 | 2017-02-23 | Andreas Koch | Vorrichtung zur Beschichtung eines flächigen Trägerelementes mit einem fließfähigen Material |
DE102013205974A1 (de) * | 2013-04-04 | 2014-10-09 | Brav-O-Tech Gmbh | Flüssigkeitsauftragsanlage |
DE102014102607B4 (de) | 2014-02-27 | 2018-07-26 | Pfleiderer Deutschland Gmbh | Beaufschlagen eines Vlieses mit einer Flüssigkeit |
AT515634A1 (de) * | 2014-03-19 | 2015-10-15 | Siemens Ag Oesterreich | Verfahren zur Herstellung von Pressgütern insbesondere von Spanplatten |
DE202014101461U1 (de) | 2014-03-27 | 2015-07-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung zum kontinuierlichen Aufbringen einer Flüssigkeit auf ein Substrat |
DE102014104340A1 (de) | 2014-03-27 | 2015-10-01 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Verfahren und Vorrichtung zum kontinuierlichen Aufbringen einer Flüssigkeit auf ein Substrat |
DE102017111177B4 (de) | 2017-05-22 | 2019-05-16 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung und Verfahren zum kontinuierlichen Aufbringen eines Benetzungsmittels auf ein sich bewegendes Substrat |
DE102017111173B4 (de) | 2017-05-22 | 2019-10-17 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung zum kontinuierlichen Aufbringen eines Trennmittels auf ein umlaufendes Band |
DE202017103098U1 (de) | 2017-05-22 | 2018-06-26 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung zum kontinuierlichen Aufbringen eines Benetzungsmittels auf ein sich bewegendes Substrat |
DE102017111175B3 (de) | 2017-05-22 | 2018-06-28 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung zum Aufbringen eines Benetzungsmittels auf ein sich bewegendes Substrat |
PL3456498T3 (pl) * | 2017-09-19 | 2022-04-04 | Homann Holzwerkstoffe GmbH | System płyty falistej |
CN108033689B (zh) * | 2017-11-24 | 2020-06-19 | 太仓耀华玻璃有限公司 | 一种平面减反射镀膜玻璃的制备工艺 |
JP6984484B2 (ja) * | 2018-02-23 | 2021-12-22 | 株式会社リコー | 塗布装置、液体を吐出する装置 |
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- 2011-10-28 WO PCT/EP2011/069003 patent/WO2012056007A1/de active Application Filing
- 2011-10-28 CA CA 2815912 patent/CA2815912A1/en not_active Abandoned
- 2011-10-28 US US13/881,681 patent/US9186811B2/en not_active Expired - Fee Related
- 2011-10-28 EP EP11778569.1A patent/EP2632670A1/de not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
WO2012056007A1 (de) | 2012-05-03 |
US20130270742A1 (en) | 2013-10-17 |
CN103260839B (zh) | 2016-04-20 |
CA2815912A1 (en) | 2012-05-03 |
DE102010049777B4 (de) | 2017-10-05 |
CN103260839A (zh) | 2013-08-21 |
DE102010049777A1 (de) | 2012-05-03 |
US9186811B2 (en) | 2015-11-17 |
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