CN106363714B - The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press - Google Patents
The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press Download PDFInfo
- Publication number
- CN106363714B CN106363714B CN201610746835.0A CN201610746835A CN106363714B CN 106363714 B CN106363714 B CN 106363714B CN 201610746835 A CN201610746835 A CN 201610746835A CN 106363714 B CN106363714 B CN 106363714B
- Authority
- CN
- China
- Prior art keywords
- wood shavings
- particieboard
- eucalyptus
- plate
- hot
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- 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
-
- 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
- B27N1/0227—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
-
- 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
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- 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
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- 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
- B27N3/10—Moulding of mats
-
- 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
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
- B27N3/143—Orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/32—Modified amine-aldehyde condensates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B2037/1269—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives multi-component adhesive
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses the methods for producing environmentally friendly particieboard using full Eucalyptus leftover pieces continuous hot-press, including chipping, flaking, it is dry, screening twice (peeling desanding), sorting polishing, adjust glue mixing, it is hot-forming, post-processing, sanding and select the processes such as plate, the present invention makes full use of Eucalyptus leftover pieces, save the waste of timber, the particieboard of production be up to state standards " particieboard " GB/T4897-2015 require and " burst size of methanal in indoor decorating and refurnishing materials wood-based plate and its product " GB18570-2001 requirement, melamine impregnated paper can be pasted on surface by producing plate, manufacture high-grade desktop, wardrobe cupboard board, partition, timber floor, the plates such as ceiling.
Description
Technical field
It is especially a kind of using full Eucalyptus leftover pieces continuous hot-press production environmental protection plane the invention belongs to wood-based plate manufacturing field
The method of card.
Background technique
Particieboard is that wood-based plate is one such, particieboard (Particle board), also known as flakeboard, particle board,
Grain plate, wood wool board etc., are made wood shavings (particle) using timber or other lignocellulosics as basic material, after application adhesive
The wood-based plate composed under temperature and pressure effect.Because particieboard structure is relatively uniform, processing performance is good, can according to need
It is processed into the plate of large format, is widely used in the fields such as furniture, office, timber floor and interior decoration, applies also for building
Industry and train, automobile bodies manufacture.
The raw material of production particieboard includes wood particulate or lignocellulosic material, adhesive and additive, wood particulate or
Lignocellulosic material accounts for 90% or so of plate dry weight, and adhesive and additive account for 10% or so；Wood particulate is derived between forest zone more
Cut down material, small dimension wood (diameter is usually at 8 centimetres or less), logging residue and wood machining residues etc..Wood particulate includes into
Sheet, strip, needle-shaped, granular wood chip, wood shavings, wood wool, sawdust etc.；In addition, non-wooden material such as plant haulm, seed hulls skin
It may be made as plate, name often titled with material therefor name, as pine particieboard, bagasse (wood shavings) plate, reed plate, hemp stalk are broken
Grain plate etc..Adhesive is mostly used urea-formaldehyde resin adhesive and phenolic resin glue, the former rouge color is light, and solidification temperature is low, to various plant materials
Such as straw, rice husk particieboard have good adhesion effect, and hot pressing temperature is 160~240 DEG C.It is widely used in production, but
There is the shortcomings that release free formaldehyde high pollution environment.
Shaving shape is the deciding factor of board quality, therefore first has to produce qualified wood shavings.Timber processing
The wood shavings of middle residue can be used as the sandwich layer of particieboard through reprocessing.Surface layer wood shavings are mainly with the residue in felling or processing
(such as sawdust) and special grinding apparatus processing are produced.The length of wood shavings, thickness, wide size because production method and for make sandwich layer or
Surface layer etc. and it is different.The process equipment for preparing wood shavings has the equipment such as wood chipping equipment, ring flaker, desintegrator, sander, cutting way
There are cutting, cutting and slicing, broken etc..To obtain high-quality wood shavings, by cutting, slicing, screening, polishing and broken again need to wait
Journey.
Manufactured goods particieboard does not need to process again, can directly use, and sound-absorbing and sound insulation value are also fine.But it also has
Its intrinsic disadvantage is easy moisture absorption, so just seeming especially heavy with particle boards to manufacturing edge sealing of furniture technique because of edge roughness
It wants.It is larger additionally, due to particieboard volume, with its Hepplewhite, for other plates, also than heavier.
In recent years, the provinces such as Guangdong and Guangxi Provinces, Yunnan, Fujian, Guizhou, Hainan of south China start to introduce a fine variety is trained by Guangxi state-owned forest farms
The fast-growing eucalyptus kind with Guangdong is educated, fast-growing Eucalyptus is a kind of leaf wood of light color, and wood grain is close and irregular, and sapwood layer compares
Width, in white to pale pink；The light brown red that core material has.The fast-growing eucalyptus speed of growth is fast at present, can become a useful person within 3 years, hill farmer is a large amount of
Plantation, accounted for south can utilize timber 50% or more, in addition the arboreal growths such as original tree species such as pine tree, Chinese fir, margosa compared with
Slowly, it is no longer able to haggle as wildwood and cut down, and the timber yield of 1 mu of fast-growing eucalyptus is equivalent to 5 mu or more of wildwood yield,
Eucalyptus only accounts for the 13.7% of forest in Guangxi area, but solves the timber demand in 80% or more Guangxi, 20% or more the whole nation.
So fast-growing eucalyptus plate manufacturing enterprise rapid emergence, production method are to be peeled into plate after cutting down eucalyptus, do
Plate is bonded into multi-layer board with adhesive again after dry, this multi-layer board is also referred to as solid wood plywood, can be used as good office and uses
The multiple uses such as product, timber floor, furniture and building-supporting plate, but a large amount of corner timber can be generated in multiple-plate production,
Either in cutting, rotary-cut or adhesion process, many leftover pieces can be all generated, these multi-layer board factories, leftover pieces initial stage is only
It can be burnt up as fuel, cause the great wasting of resources.
Chinese patent discloses some methods for using culled wood to produce particieboard for raw material, such as:
1, application number: 200710065965.9, denomination of invention: a kind of particieboard, it is to be related to one kind to recycle once
Property chopsticks be raw material production particieboard, belong to composite wooden material technical field.Wood shavings board raw material are as follows: the throwaway chopsticks of recycling
1-100%, conventional raw material 0-99%.Particieboard of the invention using conventional production technology preparation, specifically: recycling it is disposable
Chopsticks are processed into wood shavings after washing, obtain again through processes such as drying, sizing, hot pressing.
2, application number: 201310016324.X, denomination of invention: method for making particle board；It will be originated from wood materials
Particle forms slab, when then carrying out compacting manufacture particieboard to the slab, by using low-gravity wood materials and with slab
The high compression ratio of thickness and hair plates thickness is suppressed, and can be made light-weight at low cost and have splendid intensity, ruler
The particieboard of very little stability and surface characteristic.
3, application number: 201010265173.8；Denomination of invention: particieboard discloses a kind of orientation for structure application
Structural particleboard and its manufacturing method include: the long stock that length-width ratio is greater than 2, and shell of this strand from oil palm leaf section, which is
The by-product formed when harvesting oil palm tree fruit, therefore section chief is about limited to 1 meter, this strand is cut from the housing region of oil palm leaf
Out, and the outside in the main face of at least oriented structure chipboard.
Particieboard disclosed in above-mentioned document is disclosed to be pressed into using throwaway chopsticks, oil palm tree and low-gravity wood materials
The method of particieboard, but have no and the corner timber of fast-growing eucalyptus production process of plate is used to produce full Eucalyptus leftover pieces plane for raw material
The report of card.
Moreover, mostly use leftover pieces greatly in existing particieboard production process, due to doped with more bark, performance with
Wooden core difference is larger, if it is soft or hard not identical to will lead to each position of the particieboard produced by its hot pressing together, absorb water journey
Degree, intensity is not identical (bark is softer, and wooden core is harder) yet, so the board quality produced is difficult to ensure, and sets at present
The removal of skin is the technical problem being not easily solved.
Summary of the invention
The object of the present invention is to provide a kind of corner timber for using fast-growing eucalyptus production process of plate for raw material hot pressing production
The method of full Eucalyptus leftover pieces particieboard.
The technical scheme of the present invention is realized as follows:
It is comprised the following steps that using the method that full Eucalyptus leftover pieces continuous hot-press produces environmentally friendly particieboard:
(1) raw material rough segmentation
By produce Eucalyptus glued board leftover pieces and cutting material, Eucalyptus small stems through first separation metal and stone, cut
It is sent after piece, simple screening to wood chip storage transitional storehouse and is stored, chipper is then delivered to by spiral conveyer and is dug
It cuts, then is sent in wet wood shavings material transitional storehouse and is stored through scratch board conveyor；The moisture content of wet wood shavings should be maintained at 45% or less；
The separation metal uses magnetic separator.
(2) dry
Wet wood shavings are delivered in roller drier through scratch board conveyor to be dried by high-temperature flue gas, contains the end of wood shavings
Water rate is in 1.5-2.5%, and bark and wood shavings are mixed in together in dried material at this time.
(3) screening is debarked for the first time
The later wood shavings of drying are easily tied by the difference of screen mesh size using bark fiber using three rectangle swinging screens
Group's principle sorting enters the sorting of next stage swinging screen, the bark of upper layer conglomeration as acceptable material through the wood shavings of upper screen
Direct fuel of the waste discharge as energy centre can also be transferred to production line and be used to be polished into surface layer material use.
(4) second of screening separation table, sandwich layer wood shavings and small sandstone
The qualified wood shavings that rectangle swinging screen is sorted utilize the difference of different layers screen mesh size into three three layers of swinging screens are crossed,
Wood shavings are separated into surface layer wood shavings (fines), sandwich layer wood shavings (qualification material), excessive wood shavings (being polished into surface layer material), be delivered to table,
Sandwich layer winnowing machine sorts sandstone, aniseed.
(5) polishing sorting
The excessive wood shavings for sieving isolated bark and second of screening separation for the first time are polished into surface layer material by sander,
Sandstone, excessive material are separated by winnowing machine, the feeding dry wood shavings storehouse in surface layer is spare, and qualification material separates sandstone by sandwich layer winnowing machine
And after crossing aniseed, it is spare to be sent into the dry wood shavings storehouse of sandwich layer.
(6) glue mixing is adjusted
The qualified dry wood shavings of watch core layer are transported through transporter, are sent to glue mixer, while impregnation after the metering of chip metering feed bin
Workshop section mixes glue required by technique and other chemical industry auxiliary materials by pump after metering to glue mixer, wood shavings and glue in watch core layer
Under being sufficiently stirred of glue machine, achieve the effect that uniformly mixing is sufficiently glued, wood shavings particle or Eucalyptus Fibers material account for plate dry weight
85-90%, adhesive accounts for 10-15%.
(7) mat formation molding, pre- hot pressing
Wood shavings after sizing are sent through belt conveyer to mechanical classification diamond roller spreading machine, by mechanical classification mat formation unit paving
The slab of uniform ground out makes slab compression forming have conveying some strength by certain pressure；
Shaping slab is pressed into plate in continuous hot press, through temperature, pressure and hot pressing time.
(8) treatment and finishing section
Profiled sheeting will with fork truck after the cooling of cooling plate rack turnover panel to corresponding size by briar and deburring saw sawing
The good plate fork of stacking is put into semi-finished product storehouse and carries out equilibrium moisture content processing in 68-80 hours.
(9) sanding workshop section, the particieboard through cooling stacking are sent to sanding production line and carry out sanding, sawing, and sand goes to surface
Pre-hardening thickness is sawed into standard breadth (or customer requirement) production board.
(10) Xuan Ban workshop section, the offline plate of sanding cross sorting through equipment, according to finished appearance and inherent physical property
Difference is classified into different brackets plate as required；
(11) veneer pastes melamine impregnated paper, woodgrained paper or metal film on surface according to user demand, packs and enter
Library.
Leftover pieces described in step (1) are unavailable waste materials during rotary-cut Eucalyptus plate production glued board；It is described
Cutting material be Eucalyptus fell or rotary-cut processing in residue, such as timber butt, edges of boards；The Eucalyptus small stems is Eucalyptus
Felling process cannot function as the short and small branch of timber.
In described step (7) the hot pressing making sheet, hot press Temperature Distribution from high to low: heating zone first stage 230-245
℃；220-240 DEG C of second stage；210-230 DEG C of second stage；190-220 DEG C of final stage；The heat that the hot press uses
Medium is conduction oil.
Heat absorption wind apparatus is arranged at the hot press top, and the hot air pipe for the wind apparatus that absorbs heat is sent heat back to hot-air drier and done
Eliminating dampness wood shavings.
The method of the present invention for producing environmentally friendly particieboard using full Eucalyptus leftover pieces continuous hot-press can be used as manufacture
High-grade desktop, wardrobe cupboard board, partition, timber floor, furniture and office appliance plate substrate material.
The above-described method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press, used adhesive
Using composite urea formaldehyde resin, wherein the parts by weight of each raw material are as follows:
50~100 parts of cyanurotriamide modified urea resin；
1~3 part of polyvinyl alcohol；
100~200 parts of clear water.
The production method of the composite urea formaldehyde resin is will by weight: first clear water being put into reaction kettle, is heated to
It 80-100 DEG C, stirs 10 minutes to 30 minutes, adds polyvinyl alcohol and be allowed to dissolve, add melamine modified urea-formaldehyde tree
Rouge is kept for 80-90 DEG C and is stirred to react 2-5 hours, can be used being added to stir evenly using first 10-20 minutes.
Anti-blushing agent or fire retardant can be further added in the composite urea formaldehyde resin, also can according to need addition filler,
Filler is starch.
The composite urea formaldehyde resin adhesive, the function of each raw material are as follows:
Cyanurotriamide modified urea resin is adhesive major ingredient.Urea-formaldehyde resin adhesive is a kind of thermosetting polymer glue
Stick.The advantages that due to its simple process, raw material is cheap, and adhesive strength is high, colorless and transparent is widely used in glued board, plane
The industries such as card, medium density fibre board (MDF), the production of artificial board and interior decoration can be bought in Market of Adhesives.
The country has at present: village Xinghua construction material auxiliary reagent factory is paid in Hebei province Langfang City Dacheng County production.French, Germany,
Also there is production in Japan, Northern Europe.
Polyvinyl alcohol is toughener, is that one kind is commonly in chemical products, its strength of shaving boards for produce is added
Increase.
The invention has the advantages that
1, environmentally friendly particieboard is produced using Eucalyptus leftover pieces continuous hot-press, since Eucalyptus is a kind of fast growing wood, cuts down back spin
It is cut into sheet of veneer, plate is bonded into multi-layer solid wood glued board with adhesive again after dry, can be used as good office appliance, wood
The multiple uses such as floor, furniture and building-supporting plate, but either in cutting, rotary-cut or bonding in multiple-plate production process
Process can all generate many particles, leftover pieces, these multi-layer board factories, and this kind of raw material initial stage can only burn up as fuel, make
At the great wasting of resources, the present invention uses leftover pieces, is a kind of direction for making full use of resource, saving timber.
From the point of view of the Guigang of Guangxi Zhuang Autonomous Region, there are thousands of plywood factories in the whole city, and the Eucalyptus such as broken veneer are resourceful,
The present invention uses full Eucalyptus leftover pieces extrusion chipboard, and primary raw material is broken veneer (accounting for about 60%), be secondly the butt of Eucalyptus wood,
Wooden chaff etc. (accounts for about 40%).
2, present invention production has unique technique, first is that utilizing Eucalyptus leftover pieces；Second is that utilizing bark fiber easy to knot groups
Principle sorting, sub-elects bark through swinging screen；Third is that heat absorption wind apparatus is arranged at hot press top, the hot air pipe for the wind apparatus that absorbs heat will
Heat sends the dry wet wood shavings of hot-air drier back to.
3, modified urea-formaldehyde resin is used according to the characteristic of environmentally friendly particieboard, it is cheap which has a raw material, manufacture craft
The advantages that easy to operate, production glue adhesive strength is high, colorless and transparent, and low formaldehyde gas discharges, and is a kind of environmental type
Resin.
4, the plate that the method for the present invention manufactures can paste melamine impregnated paper on surface, manufacture high-grade desktop,
The plates such as wardrobe cupboard board, partition, timber floor, ceiling.Anti-blushing agent or fire retardant can be further added in the adhesive.It produces
Product are more widely applied.
5, the particieboard of the standard that plate reaches, above method production is up to state standards " particieboard " GB/T4897-
2015 requirements and " burst size of methanal in indoor decorating and refurnishing materials wood-based plate and its product " GB18570-2001 requirement.
Specific embodiment
Embodiment 1
It is comprised the following steps that using the method that full Eucalyptus leftover pieces continuous hot-press produces environmentally friendly particieboard:
(1) raw material rough segmentation
By produce Eucalyptus glued board leftover pieces and cutting material, Eucalyptus small stems through first separation metal and stone, cut
It is sent after piece, simple screening to wood chip storage transitional storehouse and is stored, chipper is then delivered to by spiral conveyer and is dug
It cuts, then is sent in wet wood shavings material transitional storehouse and is stored through scratch board conveyor；The moisture content of wet wood shavings should be maintained at 45% or less；
The leftover pieces are unavailable waste materials during rotary-cut Eucalyptus plate production glued board；The cutting material
It is the residue in Eucalyptus felling or rotary-cut processing, such as timber butt, edges of boards；The Eucalyptus small stems is that Eucalyptus fells process
It cannot function as the short and small branch of timber.
(2) dry
Wet wood shavings are delivered in roller drier through scratch board conveyor to be dried by high-temperature flue gas, or by hot press
The hot air pipe of top heat absorption wind apparatus sends heat back to hot-air drier dry wet wood shavings, makes the whole moisture content of wood shavings in 1.5-
In 2.5%, bark and wood shavings are mixed in together in dried material at this time；
(3) screening is debarked for the first time
The later wood shavings of drying are easily tied by the difference of screen mesh size using bark fiber using three rectangle swinging screens
Group's principle sorting enters the sorting of next stage swinging screen, the bark of upper layer conglomeration as acceptable material through the wood shavings of upper screen
Direct fuel of the waste discharge as energy centre can also be transferred to production line and be used to be polished into surface layer material use；
(4) second of screening separation table, sandwich layer wood shavings
The qualified wood shavings that rectangle swinging screen is sorted utilize the difference of different layers screen mesh size into three three layers of swinging screens are crossed,
Wood shavings are separated into surface layer wood shavings (fines), sandwich layer wood shavings (qualification material), excessive wood shavings (being polished into surface layer material), be delivered to table,
Sandwich layer winnowing machine sorts sandstone, aniseed (traditional particieboard production only this screening sorting process)；
(5) polishing sorting
The excessive wood shavings for sieving isolated bark and second of screening separation for the first time are polished into surface layer material by sander,
Sandstone, excessive material are separated by winnowing machine, the feeding dry wood shavings storehouse in surface layer is spare, and qualification material separates sandstone by sandwich layer winnowing machine
And after crossing aniseed, it is spare to be sent into the dry wood shavings storehouse of sandwich layer；
(6) glue mixing is adjusted
The qualified dry wood shavings of watch core layer are transported through transporter, are sent to glue mixer, while impregnation after the metering of chip metering feed bin
Workshop section mixes glue required by technique and other chemical industry auxiliary materials by pump after metering to glue mixer, wood shavings and glue in watch core layer
Under being sufficiently stirred of glue machine, achieve the effect that uniformly mixing is sufficiently glued, wood shavings particle or Eucalyptus Fibers material account for plate dry weight
85-90%, adhesive accounts for 10-15%；
Used adhesive uses composite urea formaldehyde resin, wherein the parts by weight of each raw material are as follows:
50 parts of cyanurotriamide modified urea resin；
1 part of polyvinyl alcohol；
100 parts of clear water.
The production method of the composite urea formaldehyde resin is that first clear water is put into reaction kettle, is added by according to parts by weight
Heat stirs 30 minutes to 80 DEG C, adds polyvinyl alcohol and be allowed to dissolve, and adds cyanurotriamide modified urea resin, keeps 80
It DEG C is stirred to react 5 hours, can be used being added to stir evenly using first 10-20 minutes.Starch, face are additionally added in the present embodiment
Powder filler, the weight that filler is added is the 10-20% of adhesive weight.Anti-blushing agent can be further added in composite urea formaldehyde resin.
(7) mat formation molding, pre- hot pressing
Wood shavings after sizing are sent through belt conveyer to mechanical classification diamond roller spreading machine, by mechanical classification mat formation unit paving
The slab of uniform ground out makes slab compression forming have conveying some strength by certain pressure；
Shaping slab is pressed into plate in continuous hot press, through temperature, pressure and hot pressing time.In hot pressing making sheet, heat
Press temperature is distributed from high to low: 230-245 DEG C of heating zone first stage；220-240 DEG C of second stage；Second stage 210-
230℃；190-220 DEG C of final stage；The thermal medium that the hot press uses is conduction oil.Suction is arranged at the hot press top
Hot air apparatus sends heat back to hot-air drier dry wet wood shavings.
(8) treatment and finishing section
Profiled sheeting will with fork truck after the cooling of cooling plate rack turnover panel to corresponding size by briar and deburring saw sawing
The good plate fork of stacking is put into semi-finished product storehouse and carries out equilibrium moisture content processing in 72 hours.
(9) sanding workshop section, the particieboard through cooling stacking are sent to sanding production line and carry out sanding, sawing, and sand goes to surface
Pre-hardening thickness is sawed into standard breadth (or customer requirement) production board.
(10) Xuan Ban workshop section, the offline plate of sanding cross sorting through equipment, according to finished appearance and inherent physical property
Difference is classified into different brackets plate as required, is packed and is put in storage.
Above-described embodiment production particieboard be up to state standards " particieboard " GB/T4897-2015 require and " indoor dress
Adorn burst size of methanal in finishing material wood-based plate and its product " GB18570-2001 requirement, production plate can be in surface patch three
Poly cyanamid impregnated paper manufactures the plates such as high-grade desktop, wardrobe cupboard board, partition, timber floor, ceiling.
Embodiment 2
It is comprised the following steps that using the method that full Eucalyptus leftover pieces continuous hot-press produces environmentally friendly particieboard:
(1) raw material rough segmentation
By produce Eucalyptus glued board leftover pieces and cutting material, Eucalyptus small stems through first separation metal and stone, cut
It is sent after piece, simple screening to wood chip storage transitional storehouse and is stored, chipper is then delivered to by spiral conveyer and is dug
It cuts, then is sent to progress transition storage in wet wood shavings feed bin through scratch board conveyor；The moisture content of wet wood shavings should be maintained at 45% or less；
The leftover pieces are unavailable waste materials during rotary-cut Eucalyptus plate production glued board；The cutting material
It is the residue in Eucalyptus felling or rotary-cut processing, such as timber butt, edges of boards；The Eucalyptus small stems is that Eucalyptus fells process
It cannot function as the short and small branch of timber.
(2) dry
Wet wood shavings are delivered in roller drier through scratch board conveyor to be dried by high-temperature flue gas, contains the end of wood shavings
Water rate is in 1.5-2.5%, and bark and wood shavings are mixed in together in dried material at this time；
(3) screening is debarked for the first time
The later wood shavings of drying are easily tied by the difference of screen mesh size using bark fiber using three rectangle swinging screens
Group's principle sorting enters the sorting of next stage swinging screen, the bark of upper layer conglomeration as acceptable material through the wood shavings of upper screen
Direct fuel of the waste discharge as energy centre can also be transferred to production line and be used to be polished into surface layer material use；
(4) second of screening separation table, sandwich layer wood shavings
The qualified wood shavings that rectangle swinging screen is sorted utilize the difference of different layers screen mesh size into three three layers of swinging screens are crossed,
Wood shavings are separated into surface layer wood shavings (fines), sandwich layer wood shavings (qualification material), excessive wood shavings (being polished into surface layer material), be delivered to table,
Sandwich layer winnowing machine sorts sandstone, aniseed (traditional particieboard production only this screening sorting process)；
(5) polishing sorting
The excessive wood shavings for sieving isolated bark and second of screening separation for the first time are polished into surface layer material by sander,
Sandstone, excessive material are separated by winnowing machine, the feeding dry wood shavings storehouse in surface layer is spare, and qualification material separates sandstone by sandwich layer winnowing machine
And after crossing aniseed, it is spare to be sent into the dry wood shavings storehouse of sandwich layer；
(6) glue mixing is adjusted
The qualified dry wood shavings of watch core layer are transported through transporter, are sent to glue mixer, while impregnation after the metering of chip metering feed bin
Workshop section mixes glue required by technique and other chemical industry auxiliary materials by pump after metering to glue mixer, wood shavings and glue in watch core layer
Under being sufficiently stirred of glue machine, achieve the effect that uniformly mixing is sufficiently glued, wood shavings particle or Eucalyptus Fibers material account for plate dry weight
85-90%, adhesive accounts for 10-15%；
Used adhesive uses composite urea formaldehyde resin, wherein the parts by weight of each raw material are as follows:
100 parts of cyanurotriamide modified urea resin；
3 parts of polyvinyl alcohol；
200 parts of clear water.
The production method of the composite urea formaldehyde resin is that first clear water is put into reaction kettle, is added by according to parts by weight
Heat stirs 10 minutes to 100 DEG C, adds polyvinyl alcohol and be allowed to dissolve, and adds cyanurotriamide modified urea resin, keeps 90
It DEG C is stirred to react 2 hours, can be used being added to stir evenly using first 10-20 minutes.Be additionally added in the present embodiment tapioca starch,
Flour filler, the weight that filler is added is the 10-20% of adhesive weight.Cyanurotriamide modified urea resin adhesive at home
Market purchase；Fire retardant can be further added in composite urea formaldehyde resin.
(7) mat formation molding, pre- hot pressing
Wood shavings after sizing are sent through belt conveyer to mechanical classification diamond roller spreading machine, by mechanical classification mat formation unit paving
The slab of uniform ground out makes slab compression forming have conveying some strength by certain pressure；
Shaping slab is pressed into plate in continuous hot press, through temperature, pressure and hot pressing time.In hot pressing making sheet, heat
Press temperature is distributed from high to low: 230-245 DEG C of heating zone first stage；220-240 DEG C of second stage；Second stage 210-
230℃；190-220 DEG C of final stage；The thermal medium that the hot press uses is conduction oil.Suction is arranged at the hot press top
Hot air apparatus sends heat back to hot-air drier dry wet wood shavings.
(8) treatment and finishing section
Profiled sheeting will with fork truck after the cooling of cooling plate rack turnover panel to corresponding size by briar and deburring saw sawing
The good plate fork of stacking is put into semi-finished product storehouse and carries out equilibrium moisture content processing in 72 hours.
(9) sanding workshop section, the particieboard through cooling stacking are sent to sanding production line and carry out sanding, sawing, and sand goes to surface
Pre-hardening thickness is sawed into standard breadth (or customer requirement) production board.
(10) Xuan Ban workshop section, the offline plate of sanding cross sorting through equipment, according to finished appearance and inherent physical property
Difference is classified into different brackets plate as required, is packed and is put in storage.
Above-described embodiment production particieboard be up to state standards " particieboard " GB/T4897-2015 require and " indoor dress
Adorn burst size of methanal in finishing material wood-based plate and its product " GB18570-2001 requirement, production plate can be in surface patch three
Poly cyanamid impregnated paper manufactures the plates such as high-grade desktop, wardrobe cupboard board, partition, timber floor, ceiling.
Claims (4)
1. the method for producing environmentally friendly particieboard using full Eucalyptus leftover pieces continuous hot-press, which is characterized in that by following processing step
It completes: (1) raw material rough segmentation
By produce Eucalyptus glued board leftover pieces through first separation metal and stone, chip, sent after simple screening to wood chip store
Transitional storehouse is stored, and is then delivered to chipper by spiral conveyer and is carried out slicing, then is sent to wet plane through scratch board conveyor
It is stored in flower transition feed bin；The moisture content of wet wood shavings should be maintained at 45% or less；Notice that storage process cannot be too long, avoids
Wet wood shavings are mouldy and overheat；
The separation metal uses magnetic separator；
(2) dry
Wet wood shavings are delivered to hot-air drier through scratch board conveyor and are dried, and make the whole moisture content of wood shavings in 1.5-2.5%, this
When dried material in bark and wood shavings it is mixed in together；
(3) bark of screening separation for the first time
It is easy using bark fiber by the later wood shavings of drying using two layers or two layers or more swinging screen by the difference of screen mesh size
The sorting of conglomeration principle enters the sorting of next stage swinging screen, the tree of upper layer conglomeration as acceptable material through the wood shavings of upper screen
Skin is transferred to production line and is used to be polished into surface layer material use；
(4) second of screening separation table, sandwich layer wood shavings and small sandstone
Wood shavings are separated into surface layer plane by the difference that the qualified wood shavings of vibrating screen sorting are utilized to different layers screen mesh size by swinging screen
Flower fines, sandwich layer wood shavings qualification material, excessive wood shavings；
(5) polishing sorting
The excessive wood shavings for sieving isolated bark and second of screening separation for the first time are polished into surface layer material by sander, pass through
Winnowing machine separates sandstone, excessive material, and the feeding dry wood shavings storehouse in surface layer is spare, and qualification material is by sandwich layer winnowing machine separation sandstone and mistake
After aniseed, it is spare to be sent into the dry wood shavings storehouse of sandwich layer；
(6) glue mixing is adjusted
The qualified dry wood shavings of watch core layer are transported through transporter, are sent to glue mixer, while impregnation workshop section after the metering of chip metering feed bin
Glue required by technique and other chemical industry auxiliary materials are arrived into glue mixer, wood shavings and glue in watch core layer glue mixer by pump after metering
Being sufficiently stirred under, achieve the effect that uniformly to mix and be sufficiently glued, wood shavings and bark fiber material account for the 85- of plate dry weight
90%, adhesive accounts for 10-15%；The adhesive uses composite urea formaldehyde resin；
The parts by weight of each raw material of the composite urea formaldehyde resin are as follows:
50~100 parts of cyanurotriamide modified urea resin；
1~3 part of polyvinyl alcohol；
100~200 parts of clear water；
The production method of the composite urea formaldehyde resin is that according to parts by weight, first clear water is put into reaction kettle, is heated to 80-
100 DEG C, polyvinyl alcohol is added and is allowed to dissolve, stirs 10 minutes to 30 minutes, adds cyanurotriamide modified urea resin, keeps
80-90 DEG C is stirred to react 2-5 hours, can be used being stirred evenly using first 10-20 minutes；
(7) mat formation molding, pre- hot pressing
Wood shavings after sizing are sent through belt conveyer to mechanical classification diamond roller spreading machine, are spread out by mechanical classification unit of mating formation
Even smooth slab makes slab compression forming have certain conveying intensity by certain pressure；
Shaping slab is pressed into plate in continuous hot press, through temperature, pressure and hot pressing time；
The hot press Temperature Distribution is from high to low: 230-245 DEG C of heating zone first stage；220-240 DEG C of second stage；The
Three 210-230 DEG C of stages；190-220 DEG C of final stage；The thermal medium that the hot press uses is conduction oil；
Heat absorption wind apparatus is arranged at the hot press top, and it is wet that the hot air pipe of the wind apparatus that absorbs heat sends heat back to hot-air drier drying
Wood shavings；
(8) treatment and finishing section
Profiled sheeting arrives corresponding size by briar and deburring saw sawing, after cooling plate rack turnover panel cools down, with fork truck by stacking
Good plate fork is put into semi-finished product storehouse and carries out standing 68-80 hours, equilibrium moisture content processing；
(9) sanding workshop section, the particieboard through cooling stacking are sent to sanding production line and carry out sanding, sawing, and sand goes to surface pre- solid
Change layer, is sawed into the production board of standard breadth or customer requirement；
(10) Xuan Ban workshop section, the offline plate of sanding cross sorting through equipment, according to finished appearance and the difference of inherent physical property,
It is classified into different brackets plate as required；
(11) veneer pastes melamine impregnated paper, woodgrained paper or metal film in surface of chipboard according to user demand.
2. the method according to claim 1 for producing environmentally friendly particieboard using full Eucalyptus leftover pieces continuous hot-press, feature
Be: leftover pieces described in step (1) are unavailable waste materials during rotary-cut Eucalyptus plate production glued board；Described cuts
Fracture is the residue in Eucalyptus felling or rotary-cut processing, including timber butt, edges of boards；The Eucalyptus small stems is that Eucalyptus is adopted
The process of cutting down cannot function as the short and small branch of timber.
3. the method described in claim 1 for producing environmentally friendly particieboard using full Eucalyptus leftover pieces continuous hot-press, it is characterised in that:
The particieboard is as the substrate for manufacturing high-grade desktop, wardrobe cupboard board, partition, timber floor, furniture and office appliance plate
Raw material.
4. the method according to claim 1 for producing environmentally friendly particieboard using full Eucalyptus leftover pieces continuous hot-press, feature
Be: filler, anti-blushing agent or fire retardant can be further added in the composite urea formaldehyde resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746835.0A CN106363714B (en) | 2016-08-29 | 2016-08-29 | The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746835.0A CN106363714B (en) | 2016-08-29 | 2016-08-29 | The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106363714A CN106363714A (en) | 2017-02-01 |
| CN106363714B true CN106363714B (en) | 2019-08-13 |
Family
ID=57903124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610746835.0A Active CN106363714B (en) | 2016-08-29 | 2016-08-29 | The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106363714B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107030812A (en) * | 2017-04-06 | 2017-08-11 | 大亚人造板集团有限公司 | It is a kind of can high-fidelity printing fiberboard production processes |
| CN108724419A (en) * | 2017-04-17 | 2018-11-02 | 廊坊华日家具股份有限公司 | Waste wooden formwork composite fiber plate and preparation method thereof |
| CN107081837A (en) * | 2017-04-19 | 2017-08-22 | 张寰 | A kind of net aldehyde particieboard |
| CN107297809A (en) * | 2017-07-06 | 2017-10-27 | 广西祥盛木业有限责任公司 | A kind of particieboard hot-press method |
| CN107379205A (en) * | 2017-07-06 | 2017-11-24 | 广西祥盛木业有限责任公司 | A kind of production method of particieboard |
| CN107322748B (en) * | 2017-07-11 | 2019-11-15 | 英杰惠能（北京）能源新技术有限公司 | Fire-retardant low VOC particieboard and preparation method thereof |
| CN107190581A (en) * | 2017-07-18 | 2017-09-22 | 安徽农业大学 | A kind of sago tree waste material sheet material and preparation method thereof, application |
| CN107984580A (en) * | 2017-11-24 | 2018-05-04 | 万华生态板业(信阳)有限公司 | The preparation method of plate wood shavings and the preparation method of wood-based plate |
| CN107984592A (en) * | 2017-11-27 | 2018-05-04 | 万华生态板业(信阳)有限公司 | The manufacture method and stalk-shaving board of stalk-shaving board |
| CN108177227A (en) * | 2017-12-14 | 2018-06-19 | 万华生态板业(信阳)有限公司 | The manufacturing method of wood shavings fiber composite plate and wood shavings fiber composite plate |
| CN110216765A (en) * | 2018-03-02 | 2019-09-10 | 万华生态板业股份有限公司 | Camphorwood particieboard and its manufacturing method |
| CN109514673A (en) * | 2018-11-16 | 2019-03-26 | 遵义市播州区彤辰废木回收有限公司 | A kind of wood leftover material recycling technique |
| CN109624016A (en) * | 2018-12-20 | 2019-04-16 | 广西丰林木业集团股份有限公司 | A kind of superpower particieboard manufacturing process changing shaving shape structure |
| CN109571660A (en) * | 2019-01-03 | 2019-04-05 | 广西德科新型材料有限公司 | Using full Eucalyptus brush wood and glued board flaw-piece production can finish coat collection plate method |
| CN111113586A (en) * | 2019-12-26 | 2020-05-08 | 广西大学 | Preparation method of oriented strand board |
| CN111775262B (en) * | 2020-06-17 | 2022-08-16 | 江苏金牌厨柜有限公司 | Low-odor shaving board and preparation method thereof |
| CN112109176A (en) * | 2020-09-21 | 2020-12-22 | 千年舟新材科技集团有限公司 | Atomization spraying auxiliary agent for oriented strand board, and preparation process, method and application thereof |
| CN113172720A (en) * | 2021-05-07 | 2021-07-27 | 辽宁尼尔科达环保材料有限公司 | Sky blue anion wood particle board |
| CN113815084A (en) * | 2021-09-26 | 2021-12-21 | 佳诺威集团股份有限公司 | Raw material treatment method based on moxa board production |
| EP4444523A1 (en) * | 2021-12-07 | 2024-10-16 | Inca Renewable Technologies Inc. | Balsa-like wood alternative products and methods for preparing same |
| CN116175725A (en) * | 2023-02-24 | 2023-05-30 | 巴中建丰新材料有限公司 | LSB board production method and LSB board |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607408A (en) * | 2008-06-18 | 2009-12-23 | 上海万象木业有限公司 | Utilize urban waste wood materials to make the production method of particieboard |
| CN102310453A (en) * | 2010-07-08 | 2012-01-11 | 巨野沃德森板业有限公司 | Method for manufacturing regenerated composite boards by using waste wood |
| CN203665658U (en) * | 2014-01-24 | 2014-06-25 | 昌吉州锐通木业有限公司 | System for producing particleboards with three-waste wood materials |
| CN105082316A (en) * | 2015-07-07 | 2015-11-25 | 鸿伟木业（仁化）有限公司 | Production process for eucalyptus veneer formaldehyde-free shaving board |
-
2016
- 2016-08-29 CN CN201610746835.0A patent/CN106363714B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607408A (en) * | 2008-06-18 | 2009-12-23 | 上海万象木业有限公司 | Utilize urban waste wood materials to make the production method of particieboard |
| CN102310453A (en) * | 2010-07-08 | 2012-01-11 | 巨野沃德森板业有限公司 | Method for manufacturing regenerated composite boards by using waste wood |
| CN203665658U (en) * | 2014-01-24 | 2014-06-25 | 昌吉州锐通木业有限公司 | System for producing particleboards with three-waste wood materials |
| CN105082316A (en) * | 2015-07-07 | 2015-11-25 | 鸿伟木业（仁化）有限公司 | Production process for eucalyptus veneer formaldehyde-free shaving board |
Non-Patent Citations (3)
| Title |
|---|
| 《刨花板生产气流分选设备的选用》;郭东升等;《中国人造板》;20120430(第4期);第11-13页 |
| 《刨花板生产线的工艺配置与设备选型》;薛建利等;《中国人造板》;20120531(第5期);第13-16页 |
| 《浅析提高桉木刨花板质量的措施》;陈耀礼等;《中国人造板》;20140930(第9期);第15-17页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106363714A (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106363714B (en) | The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press | |
| CN106182328B (en) | The method that sieve method screens the production particieboard of the bark in full Eucalyptus leftover pieces twice | |
| CN104626292B (en) | One can facing oriented wood chipboard and preparation technology thereof | |
| CN109624016A (en) | A kind of superpower particieboard manufacturing process changing shaving shape structure | |
| CN104608228B (en) | A kind of antibacterial and mouldproof aroma type oriented wood chipboard and preparation technology thereof | |
| CN101214677B (en) | Method of preparing full bamboo or bamboo wood composite oriented structure shaving board | |
| CN106272865B (en) | The method of full Eucalyptus leftover pieces production weatherability oriented wood chipboard | |
| CN101664952B (en) | Manufacturing method of bamboo-Chinese fir composite plate | |
| CN106313265B (en) | The method of full Eucalyptus leftover pieces production high temperature resistant oriented wood chipboard | |
| CN103770187A (en) | Special type oriented strand board and manufacturing process thereof | |
| WO2020258682A1 (en) | Formaldehyde-free medium and high-density board supporting deep overcoating and manufacturing method thereof | |
| CN102886808A (en) | Oriented shaving board and preparation method thereof | |
| CN108908646A (en) | A kind of bamboo wood of high intensity and oriented wood chipboard composite plate and preparation method thereof | |
| CN105082316A (en) | Production process for eucalyptus veneer formaldehyde-free shaving board | |
| US4405542A (en) | Method for the production of a composite material | |
| WO2006071736A2 (en) | Wood composite material containing paulownia | |
| CN101885201A (en) | Composite shaving board | |
| WO2008002763A2 (en) | Wood composite material containing paulownia | |
| CN111605025B (en) | Shaving board production method and shaving board | |
| CN108162122A (en) | Oriented wood chipboard and orientation wood-based plate | |
| CN103072172B (en) | Boxboard based on high-density oriented strand board and processing method thereof | |
| CN102896683A (en) | Directed wood shaving board and preparation method thereof | |
| CN106217576A (en) | A kind of Masson Pine Mianzhu laminated particle-board | |
| CN106121181A (en) | The recombinant wood floor that a kind of brush wood mixes with bamboo timber | |
| CN109624014A (en) | It is a kind of can facing multiple-layered wood chipboard production technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |