CN106272871B - The plastic-spraying method preparation process of wood plastics composite oriented wood chipboard - Google Patents
The plastic-spraying method preparation process of wood plastics composite oriented wood chipboard Download PDFInfo
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- CN106272871B CN106272871B CN201610813565.0A CN201610813565A CN106272871B CN 106272871 B CN106272871 B CN 106272871B CN 201610813565 A CN201610813565 A CN 201610813565A CN 106272871 B CN106272871 B CN 106272871B
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- 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
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/166—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the material to be sprayed being heated in a container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/168—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed with means for heating or cooling after mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/10—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- 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
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2203/00—Other substrates
- B05D2203/20—Wood or similar material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/60—Adding a layer before coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The plastic-spraying method preparation process of wood plastics composite oriented wood chipboard, the present invention will slide leakage to solve the big plastic grain of prior art Midst density to the bottom of slab, be unevenly distributed so as to cause plastic content and density on product thickness direction and propose a kind of plastic-spraying method preparation process of wood plastics composite oriented wood chipboard.The present invention has the step of stock, pretreatment of raw material, addition coupling agent, spray attachment plastic powders, roller mixing, layering orienting spreading, hot pressing and cold pressing and post-production.The beneficial effects of the invention are as follows：Plastic powders can be enable to be adhered to the wood material surface pre-processed through liquid coupling agent, plastic powders have been effectively ensured to uniformly disperse, the elasticity modulus and toughness of plate are enhanced by being layered orienting spreading, the comprehensive mechanical property of wood plastic composite is improved on the basis of reducing quantity of plastics and improving wood material dosage, be not in aggregation of the plastics on sheet metal thickness direction and avoid undaform Vertical density gradient（VDP）Formation.
Description
Technical field
The present invention relates to material processing fields, are related to a kind of manufacturing method of wood plastic composite, and in particular to wood moulding is multiple
Close the plastic-spraying method preparation process of oriented wood chipboard.
Background technology
Wood plastic composite is one of fastest-rising advanced polymer composites of field of compound material.It squeezes out, injection
It is the method for three kinds of main production wood plastic composites with hot pressing, but squeezes out the size that its product is limited with injection,
Therefore pressure sintering is to produce the best practice of large format wood plastic composite.Existing wood plastic composite manufacturing requirements wood
The size of matter raw material is sufficiently small, and the powdery wood fibre of usually used 40~100 mesh of industry, the milling of raw material not only increases
Energy consumption, and be also dust pollution and the source of noise pollution.Using large scale raw material, the prototype structure that can keep raw material is few
It is destroyed, so as to be conducive to increase the properties of product, and energy-saving and noise-reducing can be played the role of.The master of wood plastic composite
Raw material is wanted to include wood material and plastics, in cost, the price of plastics is higher than the price of wood material, therefore improves in product
The content of wood material can reduce the cost of product.However, in existing wood plastic composite wood material mass fraction one
As 20% to 50%, when wood material content is higher than 50%, the poor fluidity of wood material and plastic hybrid, with equipment pipe
The frictional resistance of wall is larger, the defects of causing product lack of homogeneity and face checking, therefore how to pass through new technique and improve wood
The content of wood material becomes the emphasis and hot spot of research in plastic composite materials.
During conventional thermocompression method produces wood-plastic composite (WPC), the density of plastic grain is more than the close of wood material
Degree, so as to which in mixed process, the big plastics of the density wood shavings small with density are difficult to be uniformly mixed or even mating formation and hot pressing
Cheng Zhong, the big plastic grain of density will be slided to the bottom of slab to be leaked, so as to cause plastic content and density in product thickness direction
On be unevenly distributed.Although long size wood material is conducive to increase the performance of final products, on caused by grain plastic
It states sliding leakage and unevenly distributed phenomenon becomes apparent from.
This just directly results in material and is unevenly distributed, and easily assembles on the thickness direction of slab, so as to be formed
Undaform Vertical density gradient（VDP）, and then influence the mechanical property and apparent mass of material.Plastic powders is made to spread as required
Dress, and realize powder particle homodisperse, control mat formation after the completion of the thickness of plastics pave-load layer be the weight for currently needing to solve
Want problem.Also lack one kind in the prior art simultaneously in wood plastic composite preparation process is prepared based on the plastics mode of dusting,
Allow plastic powders uniformly disperse the discoloration that plastic powders simultaneously, is avoided to occur due to centralized head load or flame, denaturation,
The method of the wood plastic composite of the defects of burning.
The content of the invention
The present invention proposes the spray of wood plastics composite oriented wood chipboard to solve a series of problems in the prior art
Modeling method preparation process, comprises the following steps：Step 1: stock：By timber or stalk by flaking, chip, roll, sawing and sieve
One or more of choosing mode processes 20~200mm of growth, wide 2~20mm, the wood material of 0.1~2mm of thickness；Step 2:
Pretreatment of raw material：High temperature drying or hot-water extraction processing or combination, and containing wood material are carried out to wood material
The drying of water rate is to less than 5%, and the surface of wood material can reduce；Step 3: addition coupling agent：Wood will be accounted for using spraying method
The liquid coupling agent of modeling compound-voltage blocking quality 0.5~2% is applied on pretreated wood material；Step 4: spray attachment
Plastic powders：Thermoplastic particle is adhered to wood material surface using plastics mode of dusting；Spray attachment plastic powders use
Thermoplastic powder spraying melt apparatus, the thermoplastic powder spraying melt apparatus have high-pressure powder container and spray gun, described
Spray gun is equipped with feed arrangement, and the feed arrangement is connected by pipeline with the high-pressure powder container, and the spray, which is robbed, also to be set
There is nozzle；It is transported in the high-pressure powder container equipped with thermoplastic powder, the thermoplastic powder with air-flow
The feed arrangement is sprayed through the spray gun into the nozzle and through the nozzle；Step 5: roller mixes：By the warp
The wood material of spray attachment plastic powders is placed in roller and is uniformly mixed, and obtains raw mixture；Step 6: multi-layer oriented mat formation：
Mixed wood material is subjected to layering orienting spreading, obtains multi-layer oriented slab；Step 7: hot pressing and cold pressing：It will mixing
Uniform wood material is put into flat-bed press hot pressing 3~20 minutes at 120~220 DEG C, backward hot press heating plate
It is passed through 5~25 DEG C of cold water or slab is transferred into room temperature press and be cold-pressed, taken out when board briquette is down to 50~60 DEG C；
Step 8: post-production：It is displayed after carrying out cutting edge and surface treatment.The beneficial effects of the invention are as follows：It can be with by the above method
Plastic powders is enable to be adhered to the wood material surface pre-processed through liquid coupling agent, plastic powders have been effectively ensured and have uniformly divided
Dissipate, by it is multi-layer oriented mat formation enhance the elasticity modulus and toughness of plate, reduce quantity of plastics improve wood material dosage
On the basis of improve the comprehensive mechanical property of wood plastic composite, be not in aggregation of the plastics on sheet metal thickness direction,
And avoid undaform Vertical density gradient（VDP）Formation.
Further, orienting spreading described in step 6 includes step in detail below：
A, orienting spreading bottom：Raw mixture is oriented to acquisition of mating formation has certain thickness orienting spreading bottom
Layer；
B, orienting spreading last layer：Change orienting spreading direction on the orienting spreading bottom, with the orienting spreading
Bottom angle is in that relation of hanging down continues to be superimposed orienting spreading last layer；
C, slab orienting spreading is completed：Repeat b step several times, until mating formation with certain thickness and the number of plies is completed,
Surface layer is carried out again to mat formation, and is finally completed plate blank paving.
Further, the plastic powders sprayed through the nozzle are the vaporific plastic powders of melting.
Further, the nozzle includes powder conveying section, powder melts section and drop spray section, the powder conveying section with
The powder melts section is connected, and the powder melts section sprays section with drop and is connected, and the powder conveying section has air-flow through hole
And air current spray nozzle, the powder melts section have cavity wall, heater and the melt chamber formed by the cavity wall and heater enclosing
Body；The air-flow through hole is connected by air current spray nozzle with the melting cavity of the powder melts section；The drop sprays section tool and connects
Socket part and jet head, one end of the melting cavity are connected with the connecting portion, and the connecting portion is connected with the jet head；Institute
It is vaporific plastic powders to state jet head ejection.
Further, the thermoplastic described in step 4 is high density polyethylene (HDPE), low density polyethylene (LDPE), high density poly- third
In alkene, polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene resin, nylon, polylactic acid, polyhydroxyalkanoate
It is one or more of；Thermoplastic described in step 4 is the waste material of recovered acquisition.
Further, described pipeline one end connects the feed arrangement, and the other end is connected with the high-pressure powder container bottom；
Intelligent control panel is additionally provided on the high-pressure powder container, the intelligent control panel can control the air pressure of high-pressure powder container
And current situation；The intelligent control panel is electrically connected with the chip on the spray gun, the work shape of the chip record spray gun
The operating condition signals are simultaneously passed to intelligent control panel by condition signal, and the intelligent control panel is according to the work of the spray gun
Make air pressure and the electric current of situation signal adjustment high-pressure powder container.
Further, the air-flow through hole has primary air road, expands circulation road, volume suction spout, attached wall curved surface and advection cavity, institute
It states volume and inhales the intersection that spout is arranged on the primary air road and the expansion circulation road, the volume inhales spout and the attached wall curved surface phase
Neighbour, the attached wall curved surface enclose the advection cavity, and the advection cavity is connected with the air current spray nozzle.
Further, the powder conveying section is made of air inlet component and mixed gas component, the air inlet component and the mixed gas
Parts nest connects, and the powder conveying section is connected by the mixed gas component with the powder melts section；The intake section
Part is equipped with primary air road entrance and expands flow channel inlet, has primary air chamber between the mixed gas component and the air inlet component
And volume inhales spout, air, which enters primary air chamber by primary air road entrance and passes through volume, inhales spout ejection, during air-flow sprays
The Air Entrainment that the air expanded near flow channel inlet is sprayed in primary air chamber；On the mixed gas component spout is inhaled with the volume
Adjacent enters the mixed gas component equipped with attached wall curved surface, air and by the air that volume is inhaled along the attached wall curved surface, and described in warp
The advection cavity that attached wall curved surface encloses is moved to air current spray nozzle direction.
Further, the cavity wall is connected by reinforcing member with heater, and anti-scald interlayer is also wrapped on outside the cavity wall.
Further, the air current spray nozzle is parallel airflow nozzle；The air is the mixing air containing plastic powders.
Further, the air current spray nozzle is equipped with advection drainage plate, and the advection drainage plate is multiple, and each advection drains
Plate is mutually parallel.
Further, the heater is combustion heater, fuel heater, laser heater, infrared heater, electromagnetism add
One or more combination in hot device and resistance heater.
Further, the heater is controllable temperature resistance heating wire, and the temperature range of the heater heating is Celsius 150
It spends to 600 degrees Celsius.
Further, the jet head has connecting leg and spray nozzle, and the connecting leg is threadedly coupled with the connecting portion.
Further, the spray nozzle is conical spray nozzle, and the cone spray nozzle is equipped with regulating valve, described in adjusting
Regulating valve can change the shape of the conical spray nozzle, and then change sprayed liquid level width.
Further, orienting spreading refers to raw mixture is mutually overlapped and is superimposed in step 6, long with raw mixture
Mat formation with axial into 0~30 degree of angle in degree direction.
Further, described in step 6 it is multi-layer oriented mat formation in each layer raw mixture when mating formation orientation direction it is parallel or
It is axial perpendicular to slab, while overlaying structure is symmetrical in slab central plane.
Description of the drawings
Fig. 1 is the plastic-spraying method preparation technology figure of wood plastics composite oriented wood chipboard of the present invention；
Fig. 2 is the structure diagram of thermoplastic powder spraying melt apparatus in the present invention；
Fig. 3 is the structure diagram of thermoplastic powder spraying melt apparatus nozzle in the present invention；
Fig. 4 is the sectional structure chart of thermoplastic powder spraying melt apparatus nozzle in the present invention；
Fig. 5 is nozzle part principle schematic in the present invention；
Fig. 6 is the structural exploded view of nozzle in the present invention.
Each several part meaning is as follows in figure：1 intelligent control panel；2 high-pressure powder containers；3 feed arrangements；4 pipelines；5 spray guns；
51 chips；6 nozzles；61 powder conveying sections；611 air-flow through holes；612 air current spray nozzles；6121 advection drainage plates；613 primary air roads；
6131 primary air road entrances；6132 primary air chambers；614 expand circulation road；6141 expand flow channel inlet；The suction spouts of volume 615；616 is attached
Wall curved surface；617 advection cavities；618 air inlet components；619 mixed gas components；62 powder melts sections；621 cavity walls；622 heaters；623 is molten
Melt cavity；624 reinforcing members；625 anti-scald interlayers；63 drops spray section；631 connecting portions；632 jet heads；6321 connecting legs；6322 sprays
Liquid mouth.
Specific embodiment
Illustrate the specific embodiment of the present invention below in conjunction with the accompanying drawings.
Specific embodiment 1：The present embodiment will be described with reference to Fig. 1, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, comprise the following steps：
Step 1: stock：By timber or stalk by flaking, chip, roll, one or more of sawing and screening side
20~200mm of formula processing growth, wide 2~20mm, the wood material of 0.1~2mm of thickness；
Step 2: pretreatment of raw material：High temperature drying or hot-water extraction processing or combination are carried out to wood material, and
By the moisture content drying of wood material to less than 5%, and the surface of wood material can reduce；
Step 3: addition coupling agent：The liquid of wood plastics composite oriented wood chipboard quality 0.5~2% will be accounted for using spraying method
Coupling agent is applied on pretreated wood material；
Step 4: spray attachment plastic powders：Thermoplastic particle is adhered to wood material table using plastics mode of dusting
Face；Spray attachment plastic powders use thermoplastic powder spraying melt apparatus, and the thermoplastic powder spraying melt apparatus have high pressure
Powder container and spray gun, the spray gun are equipped with feed arrangement, and the feed arrangement passes through pipeline and the high-pressure powder container
Connection, the spray, which is robbed, is additionally provided with nozzle；Equipped with thermoplastic powder, the thermoplastic in the high-pressure powder container
Powder is transported to the feed arrangement with air-flow, is sprayed through the spray gun into the nozzle and through the nozzle；
Step 5: roller mixes：The wood material through spray attachment plastic powders is placed in roller and is uniformly mixed, is obtained
Raw mixture；
Step 6: multi-layer oriented mat formation：Mixed wood material is subjected to layering orienting spreading, obtains multi-layer oriented plate
Base；
Step 7: hot pressing and cold pressing：Uniformly mixed wood material is put into flat-bed press at 120~220 DEG C
Hot pressing 3~20 minutes, backward hot press heating plate be passed through 5~25 DEG C of cold water or slab is transferred to carried out into room temperature press it is cold
Pressure, takes out when board briquette is down to 50~60 DEG C；
Step 8: post-production：It is displayed after carrying out cutting edge and surface treatment.
Present embodiment has the technical effect that：By the above method plastic powders can be enable to be adhered to be coupled through liquid
The wood material surface of agent pretreatment, has been effectively ensured plastic powders and has uniformly dispersed；By setting feed arrangement on spray gun, and
The feed arrangement is connected with high-pressure powder container, and it is controllable for ensure that spray gun sprays plastic powders；By using thermoplastic
Property plastic powders spraying melt apparatus can make thermoplastic molten, and be easier to be combined with wood material after being sprayed by nozzle,
And then it can preferably ensure the quality of wood plastic composite；By it is multi-layer oriented mat formation enhance the elasticity modulus of plate and tough
Property, the comprehensive mechanical property of wood plastic composite is improved on the basis of reducing quantity of plastics and improving wood material dosage, no
It is present with aggregation of the plastics on sheet metal thickness direction and avoids undaform Vertical density gradient（VDP）Formation.
Specific embodiment 2：Illustrate present embodiment with reference to Fig. 1 and Fig. 2, wood plastics composite orientation plane described in present embodiment
The plastic-spraying method preparation process of card, orienting spreading described in step 6 include step in detail below：
A, orienting spreading bottom：Raw mixture is oriented to acquisition of mating formation has certain thickness orienting spreading bottom
Layer；
B, orienting spreading last layer：Change orienting spreading direction on the orienting spreading bottom, with the orienting spreading
Bottom angle is in that relation of hanging down continues to be superimposed orienting spreading last layer；
C, slab orienting spreading is completed：Repeat b step several times, until mating formation with certain thickness and the number of plies is completed,
Surface layer is carried out again to mat formation, and is finally completed plate blank paving；Other are identical with specific embodiment 1.
Present embodiment has the technical effect that：Due to using it is multi-layer oriented mat formation by the way of, from macroscopically making wood plastics composite
The mechanical index such as static bending strength, the modulus of elasticity in static bending, the internal bond strength of plate have obtained comprehensive improvement, and the water suction for making plate is thick
Degree expansion rate decreases, and then makes the performance of wood-plastic composite panel more superior.
Specific embodiment 3：Illustrate present embodiment with reference to Fig. 1, Fig. 2 and Fig. 4, wood plastics composite described in present embodiment is determined
To the plastic-spraying method preparation process of particieboard, the plastic powders sprayed in step 4 through the nozzle 6 are the vaporific plastics of melting
Powder；Other are identical with specific embodiment 1 or 2.
Present embodiment has the technical effect that：The vaporific plastic powders that nozzle 6 sprays can preferably be combined with wood material,
Be not in aggregation of the plastics on sheet metal thickness direction, it is possible to prevente effectively from undaform Vertical density gradient（VDP）Formation.
Specific embodiment 4：Illustrate present embodiment with reference to Fig. 1, Fig. 2 and Fig. 4, wood plastics composite described in present embodiment is determined
To the plastic-spraying method preparation process of particieboard, the nozzle 6 includes powder conveying section 61, powder melts section 62 and drop and sprays section
63, the powder conveying section 61 is connected with the powder melts section 62, and the powder melts section 62 sprays section 63 with drop and is connected,
The powder conveying section 61 has air-flow through hole 611 and air current spray nozzle 612, and the powder melts section 62 has cavity wall 621, heating
Device 622 and the melting cavity 623 enclosed by the cavity wall 621 and heater 622；The air-flow through hole 611 passes through air-flow
Nozzle 612 is connected with the melting cavity 623 of the powder melts section 62；The drop sprays section 63 and has connecting portion 631 and hydrojet
First 632, one end of the melting cavity 623 is connected with the connecting portion 631, and the connecting portion 631 connects with the jet head 632
It connects；Other are identical with specific embodiment 2 or 3.
Present embodiment has the technical effect that：Due to setting powder conveying section, powder melts section and liquid on the nozzle
Drop sprays section, and plastic powders is allow to be melted in powder melts section, and sprays section by drop and be emitted into uniform liquid phase modeling
Expect particle, when liquid phase plastic grain arrival mat formation can be realized when face freezes it is homodisperse, and avoid plastic powders change
The defects of color, denaturation, burning, ensure that the wood plastic composite prepared has superior comprehensive mechanical property and suitable table
Appearance quality.
Specific embodiment 5：Illustrate present embodiment with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, wood moulding described in present embodiment is answered
The plastic-spraying method preparation process of oriented wood chipboard is closed, described 4 one end of pipeline connects the feed arrangement 3, the other end and the high pressure
2 bottom of powder container connects；Intelligent control panel 1 is additionally provided on the high-pressure powder container 2, the intelligent control panel 1 can
Control air pressure and the current situation of high-pressure powder container 2；The intelligent control panel 1 is electrically connected with the chip 51 on the spray gun 5
It connecing, the chip 51 records the operating condition signals of spray gun 5 and the operating condition signals is passed to intelligent control panel 1,
The intelligent control panel 1 adjusts air pressure and the electric current of high-pressure powder container 2 according to the working condition signal of the spray gun 5；Its
He is identical with specific embodiment 3.
Present embodiment has the technical effect that：Pipeline is connected with high-pressure powder container bottom, can make high-pressure powder container
Interior filling thermoplastic powder makes height without overfill, and due to being provided with intelligent control panel on high-pressure powder container
The electric current and air pressure for pressing powder container can be controlled reasonably, the intelligence when spray gun opens and closes on high-pressure powder container
Energy control panel can be connected to the electric signal that chip transmits on spray gun, and then determine that the electric current of high-pressure powder container is gentle
Pressure ensures the reasonable conveying of thermoplastic powder and air.
Specific embodiment 6：Illustrate present embodiment with reference to Fig. 2, Fig. 4, Fig. 5 and Fig. 6, wood moulding described in present embodiment is answered
The plastic-spraying method preparation process of oriented wood chipboard is closed, the air-flow through hole 611 has primary air road 613, expands circulation road 614, volume suction
Spout 615, attached wall curved surface 616 and advection cavity 617, the volume inhale spout 615 and are arranged on the primary air road 613 and the expansion circulation
The intersection in road 614, the volume suction spout 615 is adjacent with the attached wall curved surface 616, and the attached wall curved surface 616 encloses described
Advection cavity 617, the advection cavity 617 are connected with the air current spray nozzle 612；Other are identical with specific embodiment 4 or 5.
Present embodiment has the technical effect that：By setting primary air road 613 in powder conveying section, expanding circulation road 614, volume
Inhale spout 615, attached wall curved surface 616 and advection cavity 617 so that expand the air meeting around circulation road 614 when primary air road 613 is ventilated
Because volume inhales spout 615 and the flow velocity therefore expanded for making air, the air inhaled by volume and plastic powders meeting is inhaled to the volume of air
It is moved along attached wall curved surface 616, and since air driven plastic powders enter advection cavity so that in the present embodiment not only
Plastic powders transfer efficiency improves, and more allows air that advection output occurs, and then controls the transmission direction of plastic powders, makes modeling
Feed powder end will not assemble in powder melts section 2, also avoid adhesion of the plastic powders in cavity wall and heater.
Specific embodiment 7：Illustrate present embodiment with reference to Fig. 4, Fig. 5 and Fig. 6, wood plastics composite described in present embodiment is determined
To the plastic-spraying method preparation process of particieboard, the powder conveying section 61 is made of air inlet component 618 and mixed gas component 619, described
Air inlet component 618 and mixed 619 nested encryptions of gas component, and the powder conveying section 61 by the mixed gas component 619 with
The powder melts section 62 is connected；The air inlet component 618 is equipped with primary air road entrance 6131 and expands flow channel inlet 6141,
There is primary air chamber 6132 and volume to inhale spout 615, air passes through master between the mixed gas component 619 and the air inlet component 618
Flow channel entrance 6131, which enters primary air chamber 6132 and passes through volume suction spout 615, to be sprayed, and expansion circulation road enters during air-flow sprays
The Air Entrainment that air near mouth 6141 is sprayed in primary air chamber；On the mixed gas component 619 spout 615 is inhaled with the volume
Adjacent enters the mixed gas component 619 equipped with attached wall curved surface 616, air and by the air that volume is inhaled along the attached wall curved surface 616,
And the advection cavity 617 enclosed through the attached wall curved surface 616 is moved to 612 direction of air current spray nozzle；Other and specific embodiment
Any one of 4-6 is identical.
Present embodiment has the technical effect that：By setting air inlet component 618 and mixed gas component 619 in powder conveying section,
And primary air road entrance 6131 on air inlet component 618 is set and expands flow channel inlet 6141, make thermoplastic powder spray fusing
Device can be preferably connected with external equipment, and due to the setting of primary air chamber 6132, make the transfer capability of powder delivery section more
By force；Air, which enters primary air chamber 6132 by primary air road entrance 6131 and passes through volume suction spout 615, to be sprayed, and air-flow sprays process
The middle Air Entrainment that is sprayed in primary air chamber of air expanded near flow channel inlet 6141, on the mixed gas component 619 with institute
It states volume 615 adjacent of suction spout and enters institute equipped with attached wall curved surface 616, air and by the air that volume is inhaled along the attached wall curved surface 616
Mixed gas component 619 is stated, and the advection cavity 617 enclosed through the attached wall curved surface 616 is moved to 612 direction of air current spray nozzle, makes sky
Advection output can occur for gas, and then control the transmission direction of plastic powders, make plastic powders will not be in powder melts section 62
Aggregation, the air draught of acceleration, which plays, carries out self-cleaning effect for equipment, avoids plastic powders in cavity wall and heater
On adhesion.
Specific embodiment 8：Illustrate present embodiment with reference to Fig. 3, Fig. 4 and Fig. 6, wood plastics composite described in present embodiment is determined
To the plastic-spraying method preparation process of particieboard, the cavity wall 621 is connected by reinforcing member 624 with heater 622, the cavity wall 621
Anti-scald interlayer 625 is also wrapped on outside；Other are identical with any one of specific embodiment 4-7.
Present embodiment has the technical effect that：It is fixed heater；Set anti-scald interlayer that can prevent outside cavity wall
User is scalded during use.
Specific embodiment 9：Illustrate present embodiment with reference to Fig. 4 and Fig. 5, wood plastics composite orientation plane described in present embodiment
The plastic-spraying method preparation process of card, the air current spray nozzle 612 are parallel airflow nozzle；The air is mixed containing plastic powders
Close air；Other are identical with any one of specific embodiment 4-8.
Present embodiment has the technical effect that：Plastic powders and powder are further prevented due to being provided with parallel airflow nozzle
The related device such as last melt zone cavity wall, heater carries out making contact, and plastics is prevented to be sticked on melting cavity；Air is to contain modeling
The mixing air at feed powder end, can be such that plastic powders uniformly disperse in air, and plastic powders can also be made to be easier in powder
Melt zone is more rapid to be melted, and is avoided plastic powders and is sticked together in melting process, also avoid plastic powders with
The adhesions in relation to device such as powder melts section cavity wall, heater.
Specific embodiment 10：Illustrate present embodiment with reference to Fig. 4, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, the air current spray nozzle 612 be equipped with advection drainage plate 6121, the advection drainage plate 6121 is more
It is a, and each advection drainage plate 6121 is mutually parallel；Other are identical with any one of specific embodiment 4-9.
Present embodiment has the technical effect that：Due to being provided with multiple advection drainage plates being mutually parallel, further prevent
The related device such as plastic powders and powder melts section cavity wall, heater carries out making contacts, and plastics is prevented to be sticked to melting cavity
On.
Specific embodiment 11：Illustrate present embodiment, wood plastics composite described in present embodiment with reference to Fig. 1, Fig. 2 and Fig. 4
The plastic-spraying method preparation process of oriented wood chipboard, the heater 622 is combustion heater, fuel heater, laser heater, red
One or more combination in outer heating device, electromagnetic heater and resistance heater；Other in specific embodiment 4-10 with appointing
One identical.
Present embodiment has the technical effect that：As a result of the heater with higher performance, make plastic powders in powder
In the melt chamber body of last melt zone molten condition can be effectively heated to rapidly.
Specific embodiment 12：Illustrate present embodiment, wood moulding described in present embodiment with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4
The plastic-spraying method preparation process of compound-voltage blocking, the heater 622 be controllable temperature resistance heating wire, the heater 622
The temperature range of heating is in 150 to 600 facilities degree centigrade；Other are identical with any one of specific embodiment 4-11.
Present embodiment has the technical effect that：Due to use, resistance heating wire is heated, and makes heating operation more convenient,
Make heated perimeter and heating time more flexibly controllable；The resistance heating wire can control temperature range to be arrived at 150 degrees Celsius
600 facility degree, can facilitate different types of plastic molting.
Specific embodiment 13：Illustrate present embodiment with reference to Fig. 2 and Fig. 6, wood plastics composite described in present embodiment orients
The plastic-spraying method preparation process of particieboard, the jet head 632 have connecting leg 6321 and spray nozzle 6322, the connecting leg 6321 with
The connecting portion 631 is threadedly coupled；Other are identical with any one of specific embodiment 4-12.
Present embodiment has the technical effect that：Since the connecting leg 6321 is threadedly coupled with the connecting portion 631, make described
Jet head can be replaced flexibly as needed, can be according to need when the plastics kind of spray fusing or the object of spray fusing change
More preferable nozzle is wanted without replacing entire thermoplastic powder spraying melt apparatus.
Specific embodiment 14：Illustrate present embodiment with reference to Fig. 2 and Fig. 6, wood plastics composite described in present embodiment orients
The plastic-spraying method preparation process of particieboard, the spray nozzle 6322 are conical spray nozzle, and the cone spray nozzle, which is equipped with, to be adjusted
Valve is saved, the shape of the conical spray nozzle can be changed by adjusting the regulating valve, and then change sprayed liquid level width；Its
He is identical with any one of specific embodiment 4-13.
Present embodiment has the technical effect that：Due to being equipped with regulating valve on the conical spray nozzle, make what is sprayed
Liquid level width can change, and allow the plastic grain and composite material that are sprayed through thermoplastic powder spraying melt apparatus
Raw material mixing evenly or can as needed regulating liquid surface width so that ensure work efficiency raising.
Specific embodiment 15：Illustrate present embodiment with reference to Fig. 2, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, the intelligent control panel 1 and the chip 51 on the spray gun 5 are electrically connected or are wirelessly electrically connected to be wired
It connects；Other are identical with any one of specific embodiment 4-14.
Present embodiment has the technical effect that：Using wired electrical connection signal can be made more stable and be not easy dry by the external world
It disturbs, and uses radio connection then more convenient to use, make construction site cleaner and tidier, advantageously reduce security incident.
Specific embodiment 16：The present embodiment will be described with reference to Fig. 1, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, thermoplastic described in step 4 is high density polyethylene (HDPE), low density polyethylene (LDPE), high density poly- third
In alkene, polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene resin, nylon, polylactic acid, polyhydroxyalkanoate
It is one or more of；Other are identical with any one of specific embodiment 1-15.
Present embodiment has the technical effect that：The processing of the present invention can be effectively ensured by being processed using thermoplastic
Performance, the one or more combinations chosen in above-mentioned plastics can improve the comprehensive performance of plate, and plate can be made to have spy
Different purposes.
Specific embodiment 17：The present embodiment will be described with reference to Fig. 1, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, thermoplastic described in step 4 is the waste material of recovered acquisition；Other and specific embodiment party
Any one of formula 1-16 is identical.
Present embodiment has the technical effect that：Waste plastic is made to be used appropriately, reduces the wasting of resources, avoiding need not
The environmental pollution wanted realizes the comprehensive utilization of waste plastic and wooden resource.
Specific embodiment 18：The present embodiment will be described with reference to Fig. 1, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, the step that wood material is uniformly mixed is carried out in inclined shaft roller described in step 4, wooden original
Expect that the speed for going to 60 turns in inclined shaft roller again with per minute 10 is mixed, until stopping mixing after mixing；Other and tool
Any one of body embodiment 1-17 is identical.
Present embodiment has the technical effect that：It can rationally using wood materials quality in itself and again using inclined shaft roller
Power realizes mixing, and the speed for going to 60 turns using per minute 10 avoids and reduced wooden original caused by mechanical mixture possibility to the greatest extent
The further damaged possibility of material, and then ensure that the physical and mechanical property of wood material does not decline in mixed process, together
When wood material can be uniformly mixed.
Specific embodiment 19：The present embodiment will be described with reference to Fig. 1, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, orienting spreading refers to raw mixture is mutually overlapped and is superimposed in step 6, with raw mixture
Length direction is mated formation with axial into 0~30 degree of angle；Other are identical with any one of specific embodiment 1-18.
Present embodiment has the technical effect that：Mutually overlap joint superposition can increase machine of the raw mixture in hot pressing
Tool interlocks, and can also further rely on the promotion that the chemical bond between wood material and wooden raw material realizes plate mechanical property.
Specific embodiment 19：The present embodiment will be described with reference to Fig. 1, wood plastics composite oriented wood chipboard described in present embodiment
Plastic-spraying method preparation process, described in step 6 it is multi-layer oriented mat formation in each layer raw mixture when mating formation orientation direction it is parallel
Or it is axial perpendicular to slab, while overlaying structure is symmetrical in slab central plane；Other with it is any in specific embodiment 1-18
Item is identical.
Present embodiment has the technical effect that：The mechanical processing of plate can be improved while plate physical property is improved
Performance.
Claims (9)
1. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard, it is characterised in that comprise the following steps：
Step 1: stock：By timber or stalk by flaking, chip, roll, one or more of sawing and screening mode add
20~200mm of work growth, wide 2~20mm, the wood material of 0.1~2mm of thickness；
Step 2: pretreatment of raw material：High temperature drying or hot-water extraction processing or combination are carried out to wood material, and by wood
The moisture content drying of matter raw material is to less than 5%, and the surface of wood material can reduce；
Step 3: addition coupling agent：It is using spraying method that the liquid for accounting for wood plastics composite oriented wood chipboard quality 0.5~2% is even
Connection agent is applied on pretreated wood material；
Step 4: spray attachment plastic powders：Thermoplastic particle is adhered to wood material surface using plastics mode of dusting；Spray
Attached plastic powders use thermoplastic powder spraying melt apparatus, and the thermoplastic powder spraying melt apparatus hold with high-pressure powder
Device and spray gun, the spray gun are equipped with feed arrangement, and the feed arrangement is connected by pipeline with the high-pressure powder container, spray
Nozzle is additionally provided on rifle；Equipped with thermoplastic powder in the high-pressure powder container, the thermoplastic powder is with air-flow
The feed arrangement is transported to, is sprayed through the spray gun into the nozzle and through the nozzle；The nozzle includes powder
Transportation section, powder melts section and drop spray section, and the powder conveying section is connected with the powder melts section, the powder melts
Section sprays section with drop and is connected, and the powder conveying section has air-flow through hole and air current spray nozzle, and the powder melts section has chamber
Wall, heater and the melting cavity formed by the cavity wall and heater enclosing；The air-flow through hole passes through air current spray nozzle and institute
The melting cavity for stating powder melts section is connected；The drop, which sprays section, has connecting portion and jet head, described to melt the one of cavity
End is connected with the connecting portion, and the connecting portion is connected with the jet head；The jet head ejection is vaporific molding powder
End；
Step 5: roller mixes：Wood material through spray attachment plastic powders is placed in roller and is uniformly mixed, obtains raw material mixing
Object；
Step 6: multi-layer oriented mat formation：Mixed wood material is subjected to layering orienting spreading, obtains multi-layer oriented slab；
Step 7: hot pressing and cold pressing：Uniformly mixed wood material is put into flat-bed press the hot pressing 3 at 120~220 DEG C
~20 minutes, backward hot press heating plate be passed through 5~25 DEG C of cold water or slab be transferred into room temperature press and be cold-pressed, treat
Board briquette takes out when being down to 50~60 DEG C；
Step 8: post-production：Carry out cutting edge and surface treatment.
2. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard according to claim 1, it is characterised in that step 6 institute
Stating orienting spreading includes step in detail below：
A, orienting spreading bottom：Raw mixture is oriented to acquisition of mating formation has certain thickness orienting spreading bottom；
B, orienting spreading last layer：Change orienting spreading direction on the orienting spreading bottom, with the orienting spreading bottom
The perpendicular relation of angle continues to be superimposed orienting spreading last layer；
C, slab orienting spreading is completed：Repeat b step several times, until mating formation with certain thickness and the number of plies is completed, then into
Row surface layer is mated formation, and is finally completed plate blank paving.
3. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard according to claim 1, it is characterised in that：The step
The plastic powders sprayed in four through the nozzle are the vaporific plastic powders of melting.
4. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard according to claim 1, it is characterised in that：Step 4 institute
The thermoplastic stated is high density polyethylene (HDPE), low density polyethylene (LDPE), high density poly propylene, polyvinyl chloride, polystyrene, propylene
One or more of nitrile-butadiene styrene resin, nylon, polylactic acid, polyhydroxyalkanoate.
5. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard according to claim 1, it is characterised in that：Step 4 institute
The thermoplastic stated is the waste material of recovered acquisition.
6. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard according to claim 1, it is characterised in that：The air-flow
Through hole has primary air road, expands circulation road, volume suction spout, attached wall curved surface and advection cavity, and the volume suction spout is arranged on the main gas
Runner and the intersection for expanding circulation road, the volume suction spout is adjacent with the attached wall curved surface, and the attached wall curved surface encloses
The advection cavity, the advection cavity are connected with the air current spray nozzle.
7. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard according to claim 6, it is characterised in that：The powder
Transportation section is made of air inlet component and mixed gas component, and the air inlet component is connected with the mixed gas parts nest, and the powder
Transportation section is connected by the mixed gas component with the powder melts section；The air inlet component is equipped with primary air road entrance and expansion
There is flow channel inlet primary air chamber and volume to inhale spout between the mixed gas component and the air inlet component, and air passes through main gas
Flow channel entry point, which enters primary air chamber and passes through volume, inhales spout ejection, and air-flow expands the air quilt near flow channel inlet during spraying
The Air Entrainment sprayed in primary air chamber；Spout adjacent is inhaled with the volume be equipped with attached wall curved surface, air on the mixed gas component
And by the air that volume is inhaled along the attached wall curved surface into the mixed gas component, and through the advection cavity that the attached wall curved surface encloses to
Air current spray nozzle direction moves.
8. the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard according to claim 1, it is characterised in that：In step 6
Orienting spreading refers to raw mixture is mutually overlapped and is superimposed, with raw mixture length direction with axial into 0~30 degree of folder
Mat formation at angle.
9. according to the plastic-spraying method preparation process of wood plastics composite oriented wood chipboard any one of claim 1-8, feature exists
In：Described in step 6 it is multi-layer oriented mat formation in each layer raw mixture when mating formation orientation direction parallel or perpendicular to slab axis
To, while overlaying structure is symmetrical in slab central plane.
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| CN201610813565.0A CN106272871B (en) | 2016-09-11 | 2016-09-11 | The plastic-spraying method preparation process of wood plastics composite oriented wood chipboard |
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| CN115093806B (en) * | 2022-06-17 | 2024-02-09 | 福建友谊胶粘带集团有限公司 | Adhesive tape coating device |
| CN117258598A (en) * | 2022-06-17 | 2023-12-22 | 福建友谊胶粘带集团有限公司 | Preparation facilities of anti strong adhesive tape that draws with ligature ability |
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|---|---|---|---|---|
| CN1043899A (en) * | 1989-09-27 | 1990-07-18 | 庞亚民 | Wood plastics and waste plastics compound artificial board |
| CN1154290A (en) * | 1996-11-06 | 1997-07-16 | 康熙若 | Wood/plastic compound material and method for preparing same |
| CN101537652A (en) * | 2009-04-29 | 2009-09-23 | 西北农林科技大学 | Wood-plastic reconstituted wood and fabricating method thereof |
| CN102120334A (en) * | 2010-12-27 | 2011-07-13 | 山东贺友集团有限公司 | Production process for wood-plastic biological composite board |
| CN103659946A (en) * | 2013-11-30 | 2014-03-26 | 北京林业大学 | Directional wood-plastic composite plate and manufacturing method thereof |
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2016
- 2016-09-11 CN CN201610813565.0A patent/CN106272871B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043899A (en) * | 1989-09-27 | 1990-07-18 | 庞亚民 | Wood plastics and waste plastics compound artificial board |
| CN1154290A (en) * | 1996-11-06 | 1997-07-16 | 康熙若 | Wood/plastic compound material and method for preparing same |
| CN101537652A (en) * | 2009-04-29 | 2009-09-23 | 西北农林科技大学 | Wood-plastic reconstituted wood and fabricating method thereof |
| CN102120334A (en) * | 2010-12-27 | 2011-07-13 | 山东贺友集团有限公司 | Production process for wood-plastic biological composite board |
| CN103659946A (en) * | 2013-11-30 | 2014-03-26 | 北京林业大学 | Directional wood-plastic composite plate and manufacturing method thereof |
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