CN1400085B - Mechanically glued veneer, its manufacture method and equipment - Google Patents
Mechanically glued veneer, its manufacture method and equipment Download PDFInfo
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- CN1400085B CN1400085B CN 01131426 CN01131426A CN1400085B CN 1400085 B CN1400085 B CN 1400085B CN 01131426 CN01131426 CN 01131426 CN 01131426 A CN01131426 A CN 01131426A CN 1400085 B CN1400085 B CN 1400085B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 180
- 239000003292 glue Substances 0.000 claims abstract description 155
- 238000001035 drying Methods 0.000 claims abstract description 23
- 239000002023 wood Substances 0.000 claims description 115
- 238000005303 weighing Methods 0.000 claims description 16
- 229920002488 Hemicellulose Polymers 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 229920005610 lignin Polymers 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 9
- 239000007790 solid phase Substances 0.000 claims description 9
- 230000004913 activation Effects 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
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- 229920003002 synthetic resin Polymers 0.000 claims description 5
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- 238000002156 mixing Methods 0.000 claims description 3
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Images
Classifications
-
- 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
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention relates to a production method and a corresponding device for a board made of fibers or chips and to a board produced according to said method. The invention relates particularly to an MDF or HDF or a chip board. The aim of the invention is to provide a board having a low glue content in comparison with prior art. According to the invention, this is achieved in that the fibers or chips are first dried. The dried fibers or chips are then mixed with glue at temperatures substantially below drying temperatures, i.e. especially below 100 DEG C. This prevents the glue from being undesirably exposed to relatively high temperatures occurring during drying. The resulting board has a relatively low glue content.
Description
Technical field
The plate that the present invention relates to a kind of manufacture method of the plate made from fiber and wood chip and related device and make by this method.The invention particularly relates to MDF plate, HDF plate or sawdust-board.
Background technology
A kind of typically, the disclosed manufacturing production method that starts the plate of described form carries out as follows: the ripe wood shavings that are used for making the plate of being made by fiber are sent to a roller mill earlier.Wood shavings are especially applying under the condition of temperature and pressure and are being processed to fiber by the model dish in this roller mill.Fiber is sent in the roll squeezer by steam and is continued to carry by a pipeline that is referred to as " blue line ".Steam pressure is about 10bar at this.Temperature is about 150 to 160 ℃.Glue is added in " blue line ".After adding glue, " blue line " and then enlarges.Because this expansion forms turbulent flow, glue mixes with fiber.The percentage by weight of glue and fiber is about 20%.
" blue line " feeds the middle part of drying tube, and the drying tube diameter for example is 2.6m.It is 160 ℃ that air is blown over temperature, is up to 220 to 240 ℃ drying tube.Humidity is reduced to 8% to 11% from 100% in drying tube.
Especially in drying tube, glue is in the undesirable Temperature Treatment.From surpassing 80 ℃, glue is adversely affected or activates.The glue that is activated is no longer available for the operation that following bonding fiber is pressed into plate.
The active part of glue has reduced by above-mentioned prior art.When fiber-when the glue mixture leaves drying tube, only have 1 to 8% can use among the 22wt% originally.
For HDF plate, MDF plate and sawdust-board, adopt glue based on Lauxite.As the production floor, then in glue, add melanin.Can avoid the expansion that causes through moisture thus.
Therefore problem is, the part of glue loses through Temperature Treatment in the operation of reality.Therefore, for fiber or wood chip being pushed and therefore reaching desirable result (promptly obtaining the MDF plate), must in fiber or wood chip, add many glue of Duoing under the condition of heating than actual needs.The MDF plate has every cubic metre of 60 kilograms of glue approximately at present.
Summary of the invention
The objective of the invention is to, a kind of plate that compared with the prior art has lower glue percentage composition is provided.
For reaching above-mentioned purpose of the present invention, the method for the plate that a kind of manufacturing made by fiber or wood chip is provided, wherein, comprise that step is as follows: provide fiber or wood chip; Fiber or wood chip is dry in a drying device; Dried fiber or wood chip are molded into thin layer or knitmesh, and before described thin layer or knitmesh delivered to a plurality of nozzles in the blender; By utilizing described blender that glue and fiber or wood chip are cooled off, and by described nozzle, being lower than under 100 ℃ the temperature, glue is coated on the fiber or wood chip of the drying that is molded to thin layer or knitmesh, wherein said thin layer or knitmesh cover the whole width in the described blender; Under heating condition, will be with the fiber or the wood chip of glue to be pressed into plate.
A kind of equipment that is used to make the plate of being made by fiber or wood chip also is provided, it has a fiber or wood chip carries out dry drying device therein, and has a blender of giving dried fiber or wood chip gluing, also have the fiber of band glue or the device that wood chip is pressed into plate, wherein, this blender comprises the cooling device that is used to cool off described glue and described fiber or wood chip, to be lower than under 100 ℃ the temperature, glue is coated on fiber or the wood chip, this equipment also comprises the device that the fiber of thin layer or knitmesh form or wood chip are transported to blender, the described device that the fiber or the wood chip of thin layer or knitmesh form are transported to blender comprises a plurality of rolls and is used for described fiber or wood chip are transported to the conveyer belt of roll or the belt feeder of weighing, and described thin layer or knitmesh cover the whole width in the described blender; This equipment also comprises and is used for glue is coated in a plurality of nozzles on fiber or the wood chip, and the device before the nozzle that the described fiber or the wood chip of thin layer or knitmesh form are delivered to ejection glue.
A kind of plate of being made by the said equipment also is provided, and it is made up of wood fibre and glue, it is characterized in that, the interior glue content of plate is 50 to 52kg/m
3
Reach following advantage in addition, promptly in drier or drying tube, have only water and do not have chemical reagent to be dried.Because dry air does not have the steam of being introduced by glue in prior art, therefore help protecting environment.
Fiber that is dried or wood chip be gluing not preferably.The gluing influence is dry.Therefore compared with the prior art, can save the dry in the past big energy that must consume in the drier.The result greatly reduces cost.
By spray glue mode of the present invention, the required glue amount of MDF plate is reduced.It can reduce to 45 to 55 kilograms of every square metre of plates, and representative value is 50 to 52 kilograms of every cubic metre of plates.
An important amount that reaches the best spray glue of fiber or wood chip is fiber or wood chip and glue " correctly " ratio.Therefore in a method form of implementation of the present invention, dry fiber or wood chip are sent on the belt feeder of weighing before spray glue.Fiber on the belt feeder of weighing or wood chip on the one hand by around conveyer belt continued to transmit, on the other hand by weighing.Know thus will in fiber, add how much glue in the step below.
Fiber that transmits or wood chip arrive the equipment of back by the belt feeder of weighing.In one embodiment, detected, the record of the fiber that is transmitted possible weight fluctuation during transmitting and storing.These data are processed and as the control parameter of back spray glue.In one embodiment, the delivery time of material between the equipment (as feed roller) of measurement point and arrival back also considered in this adjusting.Can guarantee thus, realize that fluctuation changes charging rate according to actual weight.
By the change of charging rate, constant material amount is transported to the equipment of back.The determining and can finish of fiber or wood chip weight in refinement step, thus and can be with the adding fiber or the wood chip of for example ± 1% uniform precision.
Make fiber have enough glue, this is also remarkable.Because fiber is rolled in together as cotton easily.Therefore it is difficult glue will being evenly distributed on the fiber.In a kind of form of implementation of the present invention, in a blender that glue and fiber are mixed with each other, realize spray glue.For wood chip, the employing of blender provides comparable advantage.
In one embodiment of this invention, mixing apparatus has the device that is used for cooling off its housing.For this reason, in an especially simple form of implementation, be provided with one and have the double walled housing to small part, as double-wall pipe, it is the part of mixer case.Cooling liquid (as cooling water) passes through from the double-walled housing, so that cooling and mixing device and its wall.By the inside cooling, on wall, form a cooling water layer.That the cooling water layer makes band glue and can not be bonded on the wall and stop up blender with the fiber of glue or wood chip.
According to a form of implementation of the present invention, flattened behind the fiber drying, therefore constitute skim by fiber.And then add glue, especially spray in the thin layer.Preferably spray into air-glue mixture, distribute as far as possible uniformly to guarantee glue.Reach by forming thin layer, become the cotton-wool shape to compare, glue more is evenly distributed on the fiber with fiber.
In another form of implementation, the thin layer or the knitmesh (mat) of being made by fiber are admitted to blender.By nozzle air-glue mixture is injected in thin layer or the knitmesh.Therefore glue is sent on the thin layer by nozzle.Next, thin layer preferably contactlessly passes through blender.By contactless conveying, avoided fiber to be bonded on the wall.Pollution problem and relevant cost are lowered.
Glue, is preferably in the fiber that sprays into drying under 55 to 60 ℃ especially at 40 to 70 ℃ with air.Make glue have dry epidermis thus.Therefore its activation degree is low.Realize better thus: ensuing glue-fiber mixture can not be bonded at (as internal mixer) on conveyer and the utensil.
In a form of implementation of the present invention, glue prepares like this: promptly it solidified after the given time.Therefore can suitably adjust glue by Temperature Treatment.In addition, after solidifying 60 seconds, can add curing agent.The preparation of glue is especially carried out in blender, or before entering blender curing agent in glue adds dry fiber.
The advantage that the present invention had is that when subsequently fiber being squeezed into plate, glue solidifies immediately.Can realize shorter extrusion time thus.To each situation, the time of curing is determined targetedly by the professional, so that reach short especially extrusion time.Compared with the prior art, this provides important economic advantages.In prior art, can not realize so short extrusion time owing to need hardening time.
Because glue is in than the lower temperature that is adopted so far, therefore can adopt the glue higher than prior art activation degree.Chemicals component (as formaldehyde) content is reduced, and this more helps environmental protection.
In a form of implementation of the present invention, utilize hot-air that glue is stirred, this air-glue mixture is added in the dry fiber or wood chip.Be transported to hot-air in the blender by a container with glue and dry fiber or wood chip, make the little glue of generation drip the surface and activate slightly.Thus, bonding to back equipment of fiber or wood chip by corresponding inhibition.Otherwise for example blender must clean in a short period of time.Produce and then be forced to pause.In addition, correspondingly reduced undesirable cleaning cost.The defective that above-mentioned remarkable economical defective and glue are activated on a small quantity is suitable, and the two must compare mutually.The technical staff can know just by a spot of experiment for reaching desirable economy, the surface active that make glue is to which kind of degree.The content of activation glue is compared with the prior art lower usually.
In a form of implementation of the present invention, glue joins after the dry fiber or wood chip, and the Free Surface of glue is continued activation by a corresponding device thereof, so that simplify the manufacturing procedure of back.After glue joins dry fiber or wood chip, especially leave after the blender, the fiber or the wood chip of band glue preferably arrive one 10 to 30 meters long, preferably about 20 meters long tedges.The diameter of this tedge is preferably 1 to 4 meter.
Tedge preferably is cooled equally, and itself is double-walled for example, so that cooling liquid is entered between two walls of double-walled.Purpose is to form the cooling water layer on the inwall of tedge once more, so that the fiber or the wood chip of band glue can not be bonded on the wall.
The fiber or the wood chip of band glue can simply, contactlessly pass through tedge by air or gas stream.
The result shows, fiber or wood chip should be with 25m/sec at least, and the speed that is preferably 35 meters of per seconds is at least passed through tedge.If speed is lower, although take foregoing measure, fiber or wood chip also can stick on the tedge.Therefore tedge is unnecessarily polluted.If speed is lower, tedge must clean after 8 hours.By adjusting corresponding speed, its cycle can expand to 7 to 8 days.Therefore only must clean one time tedge weekly.
The fiber of band glue or wood chip depend on the parts of back or the capacity of equipment by the maximal rate of tedge.Be noted that at this parts of back or equipment must be to be in the fiber of the processing amount of reaching or the state of wood chip.In the reality, present attainable upper limit speed is 40 meters of per seconds.From 50 meters of per seconds, used rearward part will overload at present.Obviously, if the performance height of the parts of back, then this upper limit speed can improve.In principle, higher transfer rate has advantage in the tedge, because, the problem of making dirty and the production that causes the thus corresponding minimizing that pauses.
The surface that is arranged so that glue of tedge is further activated, so the operation of back can be carried out better.The length of tedge is determined by the professional and is mated with desirable glue activation grade.The professional should consider the transfer rate in the tedge when design.
After treating that glue adds dry fiber or wood chip, especially after the part activation, the fiber of band glue arrives in the cyclone separator glue in tedge.At this, because foregoing measure, the surface of glue is enough activated, so it is no longer bonding in cyclone separator.Fiber or wood chip are formed sediment in cyclone separator and by a conveyer, are sent to subsequent processing as conveyer belt.Fiber or wood chip in cyclone separator with air separation.In a form of implementation, conveyer is delivered to an inspection post with fiber or wood chip.In this inspection post, fiber is detected thick particle.These thick particles are rejected automatically.Thick particle for example is a blob of viscose.
Fiber or wood chip are continued to be sent to extruder and are squeezed into plate at this from the inspection post by conveyer belt.Extruder preferably is made up of mobile compressive zone extruding, corresponding annealing.Therefore can be continuously extruded.By the definite temperature that is complementary with the glue that is using of professional.It is different that energy value and relevant temperature can be selected in a form of implementation for two compressive zones, produces distortion when avoiding making sheet.Temperature difference when extrusion temperature is about 200 ℃ is no more than 20 ℃.
The nozzle that is used for glue is added fiber in a form of implementation preferably is arranged to taper shape.Glue comes out from the vertex of a cone with droplet form, and therefore the even distribution of desired glue is enhanced.
When the glue that for example comes out from nozzle does not contact the instrument (as the instrument in the blender) of back, the production pause that this helps avoid cleaning and causes thus.Therefore, glue preferably directly points to the direction of fiber or wood chip, and is also injected.Usually to note between the instrument in the blender of nozzle and back enough intervals being arranged.Practical experience proves that when the flat injection of glue, the interval in the blender between instrument and the nozzle is minimum to be 1 meter, is preferably at least 2 meters.Fiber then vertically is sent to opening top and being continued horizontal feed at this of blender.Described concrete spacing value only depends on concrete situation.They do not have general rule, because they finally also depend on the speed of glue from the nozzle ejection.
Spray towards machine direction as pectin-air mixture, then preferably form an air stream simultaneously, fiber is at first as far as possible contactlessly blown over the equipment (as blender or tedge) of back by air stream and therefore is transferred.Air can be by gas instead in principle.
Instrument in the blender especially adopts agitating device, and it makes fiber thoroughly mix with glue.
For obtaining a good result, before fiber arrives nozzle with thin layer form.Thus, except that the advantage of having spoken of, also can avoid glue to spray in the blender and the instrument here made dirty.Otherwise fiber is bonded on the instrument, and blender is blocked at short notice, thereby must clean in the short time interval.
In a kind of form of implementation, the instrument in the blender is fixed on the central shaft and by the rod that star separates to be formed, and they are as blade stretching, extension in a flat zone.Star is made up of for example 4 instruments.Every pair of adjacent instrument forms 90 ℃ of angles, and these blades are obliquely installed with respect to the air stream that flows through blender.Thus, realize the turbulent flow of air, and therefore fiber or wood chip are thoroughly mixed with glue.A plurality of " type star polygon work " that constitute by instrument with uniform fixed interval on axle.Fiber or wood chip then are parallel to this conveying and pass through blender.Instrument is worked thus like this, promptly also makes air turbulence except that fiber or wood chip.The instrument of propeller type is preferentially adopted.
Preferably make thin layer by fiber as follows.
One transmission medium such as conveyer belt or the belt feeder of weighing are provided with at least one at its end, best a plurality of rolls.Fiber passes through from roll.Roll pushes especially each other.If retention gap between two rolls or roll and boundary face is harmless in principle, realize thus, make thin layer or knitmesh by roll by fiber.Therefore, the shape of thin layer is made by roll.
Preferably adopt a conveyer belt, because it can guarantee that fiber is sent to roll equably.As adopting the belt feeder of weighing as a kind of form of implementation, the speed that then is transported to roll should be controlled like this, and the fiber that is about to special even amount is transported to roll.According to prior art, when making the MDF plate, adopt the conveying worm conveying fiber usually.It is even inadequately when but, fiber leaves conveying worm.Consequently thin layer is formed by inhomogeneous fiber.The thin layer of uniform thickness and width helps glue and distributes uniformly.Can make the glue that sprays into thin layer and subsequently instrument reliable separation in addition.
Especially by (coarctate) roll that is used for making thin layer, can avoid fiber to continue to be transferred with cotton-wool or bulk.This will hinder evenly spray glue.
For the fiber process straticulation and the uniform especially thin layer of acquisition of q.s as the roll of a kind of form of implementation employing more than two, being used for making the fiber of thin layer by this roll.Roll preferably is crisscross arranged up and down successively, and roll and transmission medium (as the conveyer belt or the belt feeder of weighing) form an acute angle, can add enough material to transmission medium thus, as adds conveyer belt to and deserve to be called, so that the fiber of q.s evenly can be processed.
Practice shows that for fiber being made thin layer and subsequently fiber being carried out machinery spray glue, four rolls are particularly advantageous.
As a kind of form of implementation, be used to make the opening before the thin layer of being made by fiber enters or be sent to blender, preferably with the Breadth Maximum of mixer case (as form simultaneously mixer wall as described in the diameter of pipeline) suitable.Guarantee that thus the overall width in the blender is covered by thin layer.Otherwise glue can be walked around thin layer in all the other gaps of side and spray in the blender, and causes foregoing pollution problem.
If the whole width of blender is not capped, then not only glue is sprayed into blender, is also sprayed into together with heavy outer fibrae marginatae, and forms bulk.Quality of materials degenerates thus.The corresponding post-processed problem that will run into production problem and material, and increase cost.
In practice, the sidewall of blender preferably is cooled to 7 to 15 ℃, especially 10 to 12 ℃.By this way, on wall, form a cooling water layer.Avoid viscose glue by the cooling water layer.
Above described temperature be suitable for the formation of tedge inwall cooling water layer equally.
As another form of implementation of the present invention, wood chip or wood shavings at first are broken down into solid phase wood components cellulose and liquid phase component lignin and liquid phase hemicellulose.Lignin separates with solid phase components with hemicellulose and uses as glue, promptly mixes with the wood-fibred or the wood chip of drying according to the present invention.The solid phase wood components is continued to be processed into fiber or wood chip.Liquid phase component can for example separate with solid phase components in an agitator.In the above-mentioned contained component, typical percentage by weight is 20 to 35% hemicelluloses, 45 to 50% celluloses and 20 to 35% lignin.
In a form of implementation, wood shavings at first are admitted in the plug screw conveyer (plug screw), they from the plug screw conveyer come out with squeezed state enter a boiling vessel and at this under high pressure by boiling.Boiling vessel is under the corresponding elevated pressures.Pressure in the boiling vessel is especially at least 12 to 20bar.According to prior art, wood shavings are only boiling under 8 to 9bar pressure usually.Handle by high-temperature steam, solid phase wood components (cellulose) is separated with hemicellulose with the liquid phase component lignin.Cellulose exists with solid phase form.Other two kinds of component lignin and hemicellulose are liquid and can be used as glue in principle.Its bonding force mainly comes from hemicellulose.
Existing international monopoly WO 98/37147 disclose, contained lignin and hemicellulose and the glue that is used as manufacturing MDF plate after solid phase components separates in the timber.There is serious distributing in this method, the environment in this severe contamination production place.Can't eliminate this distributing by the alternative measure of economy.According to the present invention, the problem of distributing reduces in the following manner, and promptly liquid phase component at first places in the airtight boiling vessel, does not have component to overflow from this container.Liquid phase component is cooled after separating, and is continued to handle under relatively low temperature, promptly is directed onto on the fiber by nozzle.Liquid phase component was significantly cooled off before leaving the smell closed system.Under this state of cooling, the odor dispersion degree is very low, become possibility below lignin and hemicellulose make as glue: promptly these components of timber are only left leak-tight system at lower temperature (especially be starkly lower than 100 ℃ temperature under), and are coated on the fiber under the state of cooling.Realize in this way, obviously alleviate the environmental pollution that causes by odor dispersion in the mode of economy.
As a kind of form of implementation of the present invention, liquid component hemicellulose of Huo Deing and lignin mix with conventional glue in a manner described.Hemicellulose and the lignin content in this glue mixture preferably is no more than 20wt%.In addition, this mixture also contains a kind of glue based on urine aldehyde.
As adopting hemicellulose and content of lignin mixture greater than the glue of 20wt%, the extrusion time during will being pressed into plate with glue fiber (for the backing (backing-up use) of the rubber polymer of present routine) is oversize.Therefore, it is economical hemicellulose and lignin being mixed with other glue or glue mixture.In this way, can save conventional glue on the one hand, can not make this method oversize and uneconomical on the other hand owing to what become than long extrusion time.For the upper limit with economy of hemicellulose and content of lignin, it depends on the reactivation of the glue that mixes with hemicellulose and lignin component, and the upper limit of above-mentioned 20wt% is only represented the reference value based on experience.
Because by blender, the nozzle that therefore is used for spraying glue has the gap to mixer case to the air that transmits fiber in a form of implementation with glue.Before nozzle then is positioned at the opening of mixer case.Therefore have gap or annular gap between nozzle and the opening, outside air is by be inhaled into and transmit easily herein.In this external this form of implementation, preheated by the air that gap or annular gap enter, reach temperature desired in the blender so that make, especially realize the activation on glue surface.
Instrument is fixed on the axle in the blender in a form of implementation.The nozzle that is used for spraying glue is ringwise around this setting, so that make the even cloth glue of fiber.Fiber or preferably between nozzle and instrument, pass through perpendicular to axle by the thin layer that fiber is made.Nozzle is arranged to single row or multiple rows according to the diameter of blender.For for major diameter, the whole opening of blender is used for spraying glue, and wherein two row's nozzles go in ring around the axle setting.
As another form of implementation of the present invention, in addition glass fibre or synthetic resin fiber are added in the fiber of being made up of the solid phase wood components.This interpolation is especially finished before blender in blender or directly.Thus, can make good especially plate shape profiled member, they for example can be used as the ornament materials of automotive interior.Such profiled sheeting for example can be used as the hood lining in auto industry, it is pre-stamped that this is enough to make the lamination system only to need, and do not need to carry out the final pressure step.
The profiled member that needs in the auto industry does not resemble usually many with the cheap fiber of producing of big industrially scalable.Therefore, the MDF plate is together made is economical for the profiled member that is particularly useful for auto industry and (be used for make panel), so that can use the fibre weight of big industrially scalable.Above the MDF plate that is used to make panel has one and below one, their stretching, extensions parallel to each other and be level and smooth.They have several millimeters thick.They do not have synthetic resin fiber and glass fibre usually, do not go out special shape because do not need from level and smooth surperficial branch.
When making profiled member, sharp-pointed arris can go wrong.They are easy to tear.These problems can be avoided by strengthening with glass fibre or synthetic resin fiber.
The profiled member of above-mentioned form also is used to furniture industry.For example door just needs such profiled member.
Different with the plate of being made by fiber (for example being used as the MDF plate of panel), profiled member only needs pre-stamped.Low many of pre-stamped pressure ratio normal extrusion pressure.Pre-stamped pressure only be the normal extrusion step pressure 1/3.The pressure of normal extrusion step is 75-80kg/cm
2
The content of glass fibre and/or synthetic resin fiber reaches as high as 25wt% in the profiled member, preferably reaches 15wt%, so that obtain inexpensive result.At least should adopt 5wt%.
The fiber that is used to make profiled member is different with the fiber of MDF plate that is used to make panel (particularly floor) or HDF plate, does not rely on those fibers of mentioning herein according to the present invention, and compared with prior art also is economical especially.
According to one aspect of the invention, the method of the plate that a kind of manufacturing made by fiber or wood chip is provided, it is characterized in that, comprise that step is as follows :-fiber or wood chip be provided,-by utilizing therein blender that glue and fiber or wood chip are mixed with each other glue and fiber or wood chip are cooled off, being lower than under 100 ℃ the temperature, glue is coated on fiber or the wood chip,-under heating condition, will be with the fiber or the wood chip of glue to be pressed into plate.In one embodiment, this method is further comprising the steps of :-fiber or wood chip is dry in a drying device ,-in the temperature that is higher than 140 ℃, will be with the fiber of glue to be pressed into plate.
According to a further aspect of the invention, a kind of device that is used to make the plate of being made by fiber or wood chip is provided, it has a fiber or wood chip carries out dry drying device therein, and has a blender 2 of giving fiber or wood chip gluing, also have the fiber of band glue or the device that wood chip is pressed into plate, it is characterized in that, be provided with and be used for fiber or wood chip are transported to from drying device the conveying device of blender 2, and wherein this blender 2 comprises the cooling device that is used to cool off described glue and described fiber or wood chip, with being lower than under 100 ℃ the temperature, glue is coated on fiber or the wood chip.
Further illustrate the present invention by following accompanying drawing.
Description of drawings
Fig. 1 shows the sectional view of the blender 2 of weigh belt feeder 1 and back.
Fig. 2 shows and is parallel to the view that axle 12 blender is looked.
The specific embodiment
Shown in the arrow among Fig. 13, the fiber of the drying of being made by wood shavings is sent to the belt feeder 1 of weighing by the opening of housing 4.Inclined-plane 5 is guided to being with of the belt feeder of weighing to the fiber that arrives.The inventory that the belt feeder of weighing metering and control transmit towards three roll 6 directions.Three rolls 6 reach up and down successively and are crisscross arranged, and they form a sharp angle with the belt feeder 1 of weighing.The fiber that is on the belt feeder 1 of weighing arrives in this acute angle.Their rolls 6 by rotating.During this time, form a thin layer by fiber, it continues to be transmitted straight down along arrow 7 directions owing to gravity.Therefore thin layer arrives in the blender 2, especially between a plurality of nozzles 8 and instrument 9.
Blender is made up of a tubular shell.This housing is made up of double-walled 10 and 11.Enclosure interior central authorities are provided with an axle 12, and instrument 9 is fixed thereon.Instrument 9 forms a right angle with axle 12.Per four paddle-like instrument 9 star patterns together.A plurality of this instruments of combining are fixed on the axle 12 with same intervals.The front area that is entered by fibrous thin layer does not have instrument.Therefore guaranteed between instrument 9 and the nozzle 8 enough intervals are arranged.Because existence at interval can not be sprayed directly on on the instrument at instrument 9 duration of works from the glue that nozzle 8 comes out thus.
The diameter of mixer case is suitable with the width of opening, and the thin layer of being made by fiber is admitted to blender by this opening.The width of thin layer and the width of opening are fit to.Nozzle 8 is distributed in upper area around axle 12 semicirculars in shape.Realize that thus on the one hand, thin layer has the glue of equivalent; And on the other hand, the glue that comes out from nozzle 8 can not be sprayed directly on on the parts of blender.Be provided with between nozzle 8 and the housing at interval, therefore form the annular gap.Air is inhaled into by this annular gap.The device that is used to heat the air that is inhaled into is not shown.Form air-glue mixture in the above-described manner.The thin layer (in other words, promptly by fibrous knitmesh) of band glue is parallel to axle 12 by air stream and transmits by blender 2.During transmitting, axle rotates, thereby instrument 9 also rotates.At this, glue continues to mix with fiber.Between two walls 10 and 11 of double-walled, import the liquid that is cooled so that internal mixer within it wall can form the cooling water layer.
Owing to reason clearly, in Fig. 2, only show two instruments 9.Especially the upper area in Fig. 2 can be seen the semicircular nozzle arrangements of a row.
Claims (35)
1. the method for the plate made by fiber or wood chip of a manufacturing is characterized in that, comprises that step is as follows:
-fiber or wood chip be provided,
-fiber or wood chip is dry in a drying device,
-dried fiber or wood chip are molded into thin layer or knitmesh, and before described thin layer or knitmesh delivered to a plurality of nozzles in the blender,
-by utilizing described blender glue and fiber or wood chip are cooled off, and by described nozzle, being lower than under 100 ℃ the temperature, glue is coated on the fiber or wood chip of the drying that is molded to thin layer or knitmesh, wherein said thin layer or knitmesh cover the whole width in the described blender;
-under heating condition, will be with the fiber or the wood chip of glue to be pressed into plate.
2. method according to claim 1 is characterized in that, and is further comprising the steps of:
-in the temperature that is higher than 140 ℃, will be with the fiber of glue to be pressed into plate.
3. the method for claim 1 is characterized in that, glue is applied on fiber or the wood chip in the following manner, and promptly the form with a kind of glue-gas mixture is injected on the fiber.
4. the method for claim 1 is characterized in that, the coated weight of glue is that every cubic metre of plate applies 45 to 55 kilograms of glue.
5. the method for claim 1 is characterized in that, fiber or wood chip are placed in before gluing on the belt feeder of weighing, and controls weigh belt feeder and gluing like this: make the mixed proportion of glue and fiber or wood chip keep constant during gluing.
6. the method for claim 1 is characterized in that, described blender has cooling wall.
7. the method for claim 1 is characterized in that, glue is applied on fiber or the wood chip together with the hot-air under 40 to 70 ℃.
8. the method for claim 1 is characterized in that, glue is coated on fiber or the wood chip together with curing agent.
9. the method for claim 1 is characterized in that, after glue was coated on fiber or the wood chip, only the surface range at glue made its activation.
10. the method for claim 1 is characterized in that, after described coating step and before described pressing step, the fiber or the wood chip of band glue are blown over one section tedge.
11. the method for claim 1 is characterized in that, timber is broken down into the solid phase components that forms described fiber or wood chip and is applied to liquid phase component on fiber or the wood chip as glue.
12. method as claimed in claim 11 is characterized in that liquid phase component is cooled before coating.
13. the method for claim 1 is characterized in that, contains lignin and hemicellulose in the glue, its percentage by weight is up to 20wt%.
14. the method for claim 1 is characterized in that, synthetic resin fiber and/or glass fibre are added in the fiber of being made by timber.
15. the method for claim 1 is characterized in that, produces tabular profiled member.
16. the method for claim 1 is characterized in that, is made simultaneously as the MDF plate on floor and/or HDF plate and profiled member, wherein used fiber is from identical lapping device.
17. equipment that is used to make the plate of making by fiber or wood chip, it has a fiber or wood chip carries out dry drying device therein, and has a blender (2) of giving dried fiber or wood chip gluing, also have the fiber of band glue or the device that wood chip is pressed into plate, it is characterized in that
This blender (2) comprises the cooling device that is used to cool off described glue and described fiber or wood chip, with being lower than under 100 ℃ the temperature, glue is coated on described fiber or the wood chip,
This equipment also comprises the device that the fiber of thin layer or knitmesh form or wood chip are transported to blender, the described device that the fiber or the wood chip of thin layer or knitmesh form are transported to blender comprises a plurality of rolls (6) and is used for described fiber or wood chip are transported to the conveyer belt of roll or the belt feeder of weighing (1), and described thin layer or knitmesh cover the whole width in the described blender;
This equipment also comprises and is used for glue is coated in a plurality of nozzles (8) on fiber or the wood chip, and the device before the nozzle that the described fiber or the wood chip of thin layer or knitmesh form are delivered to ejection glue.
18. equipment as claimed in claim 17 is characterized in that, it has one by means of the model dish, is applying the device that under the situation of temperature and pressure wood shavings is processed into fiber.
19. equipment as claimed in claim 17 is characterized in that, drying device has a pipeline and is used for gaseous medium is heated and blows over the device of this pipeline.
20. equipment as claimed in claim 17 is characterized in that, in described blender (2), glue is mechanically mixed by stirring tool (9) each other with fiber or wood chip, wherein, stirring tool is arranged to oar blade type or propeller type, forms turbulent flow to avoid air in blender.
21. equipment as claimed in claim 17 is characterized in that, described cooling device can cool off the housing (10,11) of described blender (2).
22. equipment as claimed in claim 17 is characterized in that, described blender (2) has double-walled housing (10,11) at least in part.
23. equipment as claimed in claim 17, wherein said blender (2) has double walled ducting at least in part.
24. equipment as claimed in claim 17 is characterized in that, it has tedge vertical stretching, extension, that follow blender closely, and described fiber or wood chip overcome gravity and blown over from this tedge.
25. equipment as claimed in claim 24 is characterized in that, described cooling device is provided for the housing that cools off described blender and/or described tedge with cooling liquid.
26. equipment as claimed in claim 24 is characterized in that, described cooling device can form the cooling water layer on the inwall of described blender and/or described tedge.
27. equipment as claimed in claim 17 is characterized in that, described roll is configured to self and interlocks, and described roll and described conveyer belt or the described belt feeder of weighing (1) formation acute angle (α).
28. equipment as claimed in claim 17 is characterized in that, described mixing apparatus is useful on the device of the air that is inhaled into of heating and makes glue be coated in device on fiber or the wood chip together with heated air.
29. equipment as claimed in claim 17 is characterized in that, it has makes glue be coated in device on fiber or the wood chip together with curing agent.
30. equipment as claimed in claim 17 is characterized in that, it has one makes the precipitated therein cyclone separator that goes out of the band fiber of glue or wood chip; And/or one make band fiber of glue or the inspection post that wood chip can be monitored selectively.
31. equipment as claimed in claim 17 is characterized in that, it has an extruder that comprises the compressive zone of the circulation that is extruded each other.
32. equipment as claimed in claim 17 is characterized in that, it has an opening, is admitted in the blender or before delivering to blender, the Breadth Maximum of this opening and mixer case is suitable by fibroplastic thin layer from this opening.
33. equipment as claimed in claim 24 is characterized in that, described tedge and/or described blender are made of metal.
34. equipment as claimed in claim 17 is characterized in that, it is provided with and makes timber resolve into solid constituent promptly, the device of fiber or wood chip and liquid component and described liquid component is coated in device on fiber or the wood chip.
35. the plate by each described device fabrication of claim 17-34, it is made up of wood fibre and glue, it is characterized in that, the glue content in the plate is 50 to 52kg/m
3
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20112599.4 | 2001-08-01 | ||
| DE20112599U DE20112599U1 (en) | 2001-08-01 | 2001-08-01 | MDF board and manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1400085A CN1400085A (en) | 2003-03-05 |
| CN1400085B true CN1400085B (en) | 2010-11-03 |
Family
ID=7959926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01131426 Expired - Lifetime CN1400085B (en) | 2001-08-01 | 2001-09-07 | Mechanically glued veneer, its manufacture method and equipment |
Country Status (11)
| Country | Link |
|---|---|
| EP (2) | EP2476526B1 (en) |
| CN (1) | CN1400085B (en) |
| CA (1) | CA2416817A1 (en) |
| DE (2) | DE20112599U1 (en) |
| ES (2) | ES2389498T3 (en) |
| FR (1) | FR2828128B1 (en) |
| NO (1) | NO20035856L (en) |
| PL (1) | PL194518B1 (en) |
| PT (2) | PT1412147E (en) |
| RU (1) | RU2286248C2 (en) |
| WO (1) | WO2003013808A1 (en) |
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| ATE371528T1 (en) * | 2003-09-12 | 2007-09-15 | Kronospan Tech Co Ltd | HIGH PRESSURE GLUING IN THE FIBER MIXER |
| ITMO20040127A1 (en) | 2004-05-25 | 2004-08-25 | Imal Srl | PROCESS OF GLUING FRAGMENTS OR WOOD SHAVINGS FOR OSB AND RELATED BONDING APPARATUS. |
| DE202006012116U1 (en) * | 2006-08-08 | 2007-12-27 | Vöhringer GmbH | Wood panel |
| CN101086150B (en) * | 2007-07-04 | 2011-08-31 | 南昌大学 | Gluing-free middle and high-density fiber board preparation method |
| DE102008056650A1 (en) * | 2008-11-10 | 2010-05-12 | Martin Dreisman | Composition and method of making a wood or fiberboard |
| SI2230477T1 (en) * | 2009-03-10 | 2015-04-30 | Kronotec Ag | Wood chips drying plant for drying wood chips and method for drying wood chips |
| IT1399772B1 (en) | 2010-04-30 | 2013-05-03 | Imal Srl | APPARATUS FOR THE INJECTION OF CHEMICAL COMPONENTS IN A FLOW OF NON-INCORRENT WOODEN MATERIAL |
| CN103358384B (en) * | 2013-07-25 | 2015-06-10 | 宁波博帆卫浴有限公司 | Wood meal pretreatment equipment |
| WO2016079124A1 (en) | 2014-11-17 | 2016-05-26 | Metadynea Austria Gmbh | Process for low temperature pressing |
| CN106079027B (en) * | 2016-08-23 | 2018-03-27 | 辽宁蓝亿实业有限公司 | A kind of medium-density plate preparation method for strengthening sheet material soundproof effect |
| US11499778B2 (en) | 2017-03-03 | 2022-11-15 | Douglas Technical Limited | Apparatus and method for continuously drying bulk goods, in particular wood chips and/or wood fibers comprising a solid fired hot gas generator |
| CN110382961A (en) | 2017-03-03 | 2019-10-25 | 道格拉斯科技有限公司 | The device and method including hot gas cyclone separator for continuous drying bulk product, particularly sawdust and/or wood-fibred |
| US11248845B2 (en) | 2017-03-03 | 2022-02-15 | Douglas Technical Limited | Apparatus and method for continuously drying bulk goods, in particular wood chips and/or wood fibers comprising a heat exchanger |
| UA125909C2 (en) | 2017-06-06 | 2022-07-06 | Даґлас Текнікал Лімітед | Apparatus and method for continuously drying bulk goods |
| CN108608659B (en) * | 2018-04-27 | 2024-05-24 | 山东玲珑机电有限公司 | Tire inner cavity glue spraying device suitable for high-temperature-resistant glue stock |
| CN111098370A (en) * | 2020-02-28 | 2020-05-05 | 重庆德沃木制品加工有限公司 | Production process of spliced ecological plate |
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- 2001-08-16 ES ES01967279T patent/ES2389498T3/en not_active Expired - Lifetime
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- 2001-08-16 RU RU2002125407/12A patent/RU2286248C2/en active
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2416817A1 (en) | 2003-02-01 |
| PT1412147E (en) | 2012-08-22 |
| FR2828128B1 (en) | 2005-06-03 |
| EP1412147B1 (en) | 2012-06-13 |
| WO2003013808A1 (en) | 2003-02-20 |
| NO20035856L (en) | 2005-03-24 |
| EP1412147A1 (en) | 2004-04-28 |
| DE10139966C2 (en) | 2003-12-04 |
| DE20112599U1 (en) | 2002-12-19 |
| EP2476526A1 (en) | 2012-07-18 |
| FR2828128A1 (en) | 2003-02-07 |
| PL194518B1 (en) | 2007-06-29 |
| CN1400085A (en) | 2003-03-05 |
| ES2519641T3 (en) | 2014-11-07 |
| PT2476526E (en) | 2014-10-22 |
| PL349240A1 (en) | 2003-02-10 |
| EP2476526B1 (en) | 2014-07-30 |
| DE10139966A1 (en) | 2003-02-27 |
| RU2286248C2 (en) | 2006-10-27 |
| ES2389498T3 (en) | 2012-10-26 |
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