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 PDF

Info

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
plate
eucalyptus
hot
Prior art date
Application number
CN201610746835.0A
Other languages
Chinese (zh)
Other versions
CN106363714A (en
Inventor
杨小星
张兆杰
董华平
万阳
杨景和
Original Assignee
广西华晟木业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广西华晟木业有限公司 filed Critical 广西华晟木业有限公司
Priority to CN201610746835.0A priority Critical patent/CN106363714B/en
Publication of CN106363714A publication Critical patent/CN106363714A/en
Application granted granted Critical
Publication of CN106363714B publication Critical patent/CN106363714B/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27DWORKING VENEER OR PLYWOOD
    • B27D1/00Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04Joining 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
    • B27D1/08Manufacture of shaped articles; Presses specially designed therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N1/00Pretreatment of moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N1/00Pretreatment of moulding material
    • B27N1/02Mixing the material with binding agent
    • B27N1/0227Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/002Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/10Moulding of mats
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/10Moulding of mats
    • B27N3/14Distributing or orienting the particles or fibres
    • B27N3/143Orienting the particles or fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIAL AS ADHESIVES
    • C09J161/00Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/20Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C09J161/32Modified amine-aldehyde condensates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B2037/1269Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives multi-component adhesive

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

The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press

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.
CN201610746835.0A 2016-08-29 2016-08-29 The method that environmentally friendly particieboard is produced using full Eucalyptus leftover pieces continuous hot-press CN106363714B (en)

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 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 (11)

* Cited by examiner, † Cited by third party
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
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
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
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
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

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
Stark et al. Wood-based composite materials: Panel products, glued-laminated timber, structural composite lumber, and wood-nonwood composite materials
US2831793A (en) Composite veneer or plywood panel
US2642371A (en) Composite wooden board
CN102423891B (en) Manufacturing method of non-formaldehyde solid wood composite floor using low-density cottonwood veneers as base materials
Youngquist Wood-based composites and panel products
CN100553911C (en) Solid wooden compound floor and preparation method with cutting plate, veneer composition
JP6171059B2 (en) Soybean adhesive and composites produced from the adhesive
CN105150338A (en) Manufacturing method for formaldehyde-free medium and high density fiber panel
CN100486786C (en) Manufacturing method of wood/hybrid Chinese pennisetum composite artificial board
Nugroho et al. Development of structural composite products made from bamboo I: fundamental properties of bamboo zephyr board
CN102773901B (en) Bamboo filament composite board and method for processing same
CN102198684B (en) Oriented chipboard and processing technology
US7354503B2 (en) Fire retardant composite panel product and a method and system for fabricating same
CN1261289C (en) Plate fabricated from upright core of bamboo and its mfg. method
US6737155B1 (en) Paper overlaid wood board and method of making the same
CN101342723B (en) Method for manufacturing sunflower artificial board of straw
CN100392200C (en) Charring wood composite floor and manufacturing method thereof
US4361612A (en) Medium density mixed hardwood flake lamina
CN103317585B (en) Environmental-friendly ecological plant fibreboard and shaving board and manufacture method thereof
BE1019736A3 (en)
CN100548603C (en) The manufacture method of high-strength anti-corrosion integrated material
EP2574455B1 (en) Light multiple layer wood panel
CN103192442B (en) A kind of production method of medium density fibre board (MDF)
CN104608228B (en) A kind of antibacterial and mouldproof aroma type oriented wood chipboard and preparation technology thereof
CN101513745B (en) Preparation method for composite inflaming retarding core-board

Legal Events

Date Code Title Description
PB01 Publication
C06 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