CN108393977B - High-stability formaldehyde-free functional decorative board and manufacturing method thereof - Google Patents

High-stability formaldehyde-free functional decorative board and manufacturing method thereof Download PDF

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Publication number
CN108393977B
CN108393977B CN201810433001.3A CN201810433001A CN108393977B CN 108393977 B CN108393977 B CN 108393977B CN 201810433001 A CN201810433001 A CN 201810433001A CN 108393977 B CN108393977 B CN 108393977B
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layer
thick
formaldehyde
stability
thickness
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CN108393977A (en
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孙丰文
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Nanjing Forestry University
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Nanjing Forestry University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/18—Compounds of alkaline earth metals

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

The invention relates to a high-stability formaldehyde-free functional decorative board and a manufacturing method thereof, wherein the front surface of the outermost layer is a surface functional decorative film with antibacterial property and oxygen anion excitation function, and the back surface of the outermost layer is a back surface balance decorative layer with a balance function; the secondary outer layer is two layers of transverse reinforced thin veneers which are symmetrically paved and have the thickness of 1.5-2.0 mm; the middle core layer is a two-layer modified thick core board which is symmetrically paved and has the thickness of 6.0-10.0mm and is subjected to nano calcium filling and carbonization modification; and adjacent veneers are glued by adopting formaldehyde-free adhesive. The invention adopts the integrated technology of log high-efficiency softening treatment, rotary cutting, nano calcium carbonate in-situ reaction deposition filling, high-temperature carbonization drying and shaping to prepare the decorative plate with the functions of surface antibiosis and oxygen anion excitation.

Description

High-stability formaldehyde-free functional decorative board and manufacturing method thereof
Technical Field
The invention relates to a method for preparing an aldehyde-free functional decorative board by filling modification and carbonization treatment and gluing of thick veneer nano calcium carbonate by utilizing fast-growing wood. Belonging to the technical fields of wood science, wood processing and artificial boards.
Background
In the production process of the plywood, the thickness of each layer of veneer is increased, and the number of veneer layers and the number of glue layers can be reduced, so that the adhesive consumption and the formaldehyde release amount of the product can be obviously reduced, meanwhile, the increase of the veneer thickness and the reduction of the number of layers can greatly reduce the labor consumption and improve the labor efficiency, and the overall appearance of the product is more similar to that of a solid wood board, so that the thick-core plywood becomes an important development direction in recent years. However, the back surface cracks caused by the rotary cutting of the thick veneer are serious, and the thickness deviation of the veneer is large, so that the thickness non-uniformity, the warping and the distortion of the manufactured veneer are more serious, and the veneering processing difficulty is high; this seriously affects the popularization and application of the product.
Disclosure of Invention
The invention provides a high-stability formaldehyde-free functional decorative board and a manufacturing method thereof, aiming at the industrial situation of the plywood manufacturing industry and the product defect of thick-core plywood.
The technical scheme provided by the invention is as follows:
the front surface of the outermost layer is a surface functional decorative film with antibacterial property and oxygen anion excitation function, and the back surface of the outermost layer is a back surface balance decorative layer with a balance function; the secondary outer layer is two layers of transverse reinforced thin veneers which are symmetrically paved and have the thickness of 1.5-2.0 mm; the middle core layer is a two-layer modified thick core board which is symmetrically paved and has the thickness of 6.0-10.0mm and is subjected to nano calcium filling and carbonization modification; and adjacent veneers are glued by adopting formaldehyde-free adhesive.
The manufacturing method of the high-stability formaldehyde-free functional decorative board comprises the following process steps:
1) Preparing a wood section and rotary cutting a thick veneer: sawing the log to be processed into log segments with a certain length, adopting a rotary cutter to rotary cut the log segments into Cheng Xuan log segments, then putting the rotary log segments into an impregnating tank, vacuumizing, sucking sodium carbonate aqueous solution with the temperature of normal temperature to 75 ℃, taking out the rotary log segments after pressurizing and impregnating for a certain time, and rotary-cutting the log segments into thick veneers with the thickness of 6-10mm on a thick veneer rotary cutter;
2) Drying and stabilizing the thick veneer: firstly, drying a thick veneer until the water content is below 18%, then putting the thick veneer into an impregnating tank, injecting a saturated aqueous solution of calcium chloride, pressurizing and impregnating for a certain time, and taking out the thick veneer; firstly, placing the materials into a dryer or a drying kiln, and drying the materials at the temperature of 95-105 ℃ until the water content of the single board is 12-16%; then placing the mixture into a hot press, heating to 180-240 ℃, carbonizing at high temperature for 3-10min under the condition that the unit pressure is 0.2-0.6MPa, and taking out the mixture to prepare a thick veneer with stable size;
3) Manufacturing a thick core substrate: forming a four-layer board by the stabilized two-layer thick veneers and the two-layer thin veneers, and coating Shi Regu aldehyde-free adhesive between adjacent thick veneers with the adhesive coating amount of 130-180g/m 2 Then placing the plate blank into a hot press, hot-pressing under the conditions of unit pressure of 0.8-1.2MPa and hot-pressing temperature of 90-110 ℃, releasing pressure, taking out the glued plate blank, stacking for more than 8 hours at room temperature, and carrying out edge trimming, thickness fixing and sanding to obtain a thick core substrate;
4) And (3) veneering and forming the thick core substrate: the surface of the thick core substrate manufactured by trimming, thickness fixing and sanding is coated with aldehyde-free adhesive, and the single-sided adhesive coating amount is 80-120g/m 2 Aging for 10-30min, laying a layer of antibacterial oxygen anion membrane material on the front surface, laying a layer of soaking balance membrane material on the back surface, and placing into a hot press at unit pressureHot-pressing for 1.0-2.0min under the conditions of 0.8-1.2MPa and hot-pressing temperature of 120-140 ℃, taking out, cooling, and sawing to obtain the high-stability formaldehyde-free functional decorative board with standard size. Further, the impregnation time is determined by the diameter of the log, and the diameter is 0.5-2.0min for each 1 mm.
Further, the hot pressing is carried out for 0.8-1.2min per 1mm of slab thickness on average.
Further, the impregnated balance film material is impregnated paper or impregnated non-woven fabric.
Compared with the prior art, the invention has the beneficial effects that:
the invention innovatively adopts the integrated technology of rotary cutting, nano calcium carbonate in-situ reaction deposition filling, high-temperature carbonization drying and shaping after log high-efficiency softening treatment to develop a thick veneer with precise rotary cutting and stable size, adopts the technologies of aldehyde-free gluing, functional decorative film material veneering and the like to develop a decorative plate with perfect integrity, excellent dimensional stability and surface antibacterial and oxygen anion excitation functions.
Drawings
Fig. 1: the invention relates to a structural schematic diagram of a high-stability formaldehyde-free functional decorative board.
In the figure: 1-a surface function decorative film, 2-a back balance decorative layer, 3-a transverse reinforced thin veneer and 4-a modified thick core plate.
Detailed Description
The invention will be further illustrated with reference to specific examples.
A high-stability formaldehyde-free functional decorative board is characterized in that the decorative board consists of six layers of structures, and the detail is shown in figure 1. Wherein the front surface of the outermost layer is a surface function decorative film 1 with antibacterial property and oxygen anion excitation function, and the back surface of the outermost layer is a back surface balance decorative layer 2 with balance function; the secondary outer layer is two layers of transverse reinforced thin veneers 3 which are symmetrically paved and have the thickness of 1.5-2.0 mm; the middle core layer is a two-layer modified thick core plate 4 which is symmetrically paved and has the thickness of 6.0-10.0mm and is subjected to nano calcium filling and carbonization modification; and adjacent veneers are glued by adopting formaldehyde-free adhesive.
A manufacturing method of a high-stability formaldehyde-free functional decorative board comprises the following process steps:
1. preparing a wood section and rotary cutting a thick veneer: sawing the log to be processed into log segments with a certain length, adopting a common rotary cutter to rotary-cut the log segments into regular cylinders (rotary log segments), then loading the rotary log segments into an impregnation tank, vacuumizing, sucking sodium carbonate aqueous solution with the temperature of normal temperature to 75 ℃, carrying out pressurized impregnation for a certain time (the impregnation time is determined by the diameter of the log, and impregnating each 1mm of diameter for 0.5-2.0 min), taking out the rotary log segments, and rotary-cutting the log segments into thick veneers with the thickness of 6-10mm on a thick veneer rotary cutter.
2. Drying and stabilizing the thick veneer: drying a thick veneer until the water content is below 18%, then filling the thick veneer into an impregnation tank, injecting a saturated aqueous solution of calcium chloride, pressurizing and impregnating for a certain time (the impregnation time is determined by the thickness of the veneer, and impregnating for 0.5-2min every 1mm thickness), taking out the thick veneer, firstly filling the thick veneer into a dryer or a drying kiln, drying at the temperature of 95-105 ℃ until the water content of the veneer is 12-16%, then filling the thick veneer into a hot press, heating to 180-240 ℃, carbonizing at the high temperature for 3-10min under the condition of the unit pressure of 0.2-0.6MPa, and taking out the thick veneer to prepare the thick veneer with stable size.
3. Manufacturing a thick core substrate: the stabilized two-layer thick veneer and the two-layer thin veneer are formed into a 4-layer veneer according to the structure shown in figure 1, shi Regu aldehyde-free adhesive is coated between adjacent thick veneers, and the adhesive coating amount is 130-180g/m 2 And then the plate blank is put into a hot press, the average thickness of the plate blank per 1mm is hot-pressed for 0.8-1.2min under the conditions of unit pressure of 0.8-1.2MPa and hot-pressing temperature of 90-110 ℃, the pressure is relieved, the plate blank formed by gluing is taken out, stacked for more than 8 hours at room temperature, and the plate blank is subjected to edge trimming, thickness fixing and sanding to prepare the thick core substrate.
4. And (3) veneering and forming the thick core substrate: the surface of the thick core substrate manufactured by trimming, thickness fixing and sanding is coated with aldehyde-free adhesive, and the single-sided adhesive coating amount is 80-120g/m 2 Aging for 10-30min, spreading a layer of antibacterial oxygen anion membrane material on front surface, spreading a layer of soaking balance membrane material (soaking paper or soaking non-woven fabric) on back surface, placing into hot press, hot pressing under unit pressure of 0.8-1.2MPa and hot pressing temperature of 120-140deg.C for 1.0-2.0min, taking out, cooling, and sawingAnd the high-stability formaldehyde-free functional decorative board is manufactured according to the specification and the size.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent replacement, and improvement made to the above embodiments by those skilled in the art without departing from the technical scope of the present invention, will fall within the scope of the present invention.

Claims (5)

1. A manufacturing method of a high-stability formaldehyde-free functional decorative plate is characterized by comprising the following steps: the method comprises the following process steps:
1) Preparing a wood section and rotary cutting a thick veneer: sawing the log to be processed into log segments with a certain length, adopting a rotary cutter to rotary cut the log segments into Cheng Xuan log segments, then putting the rotary log segments into an impregnating tank, vacuumizing, sucking sodium carbonate aqueous solution with the temperature of normal temperature to 75 ℃, taking out the rotary log segments after pressurizing and impregnating for a certain time, and rotary-cutting the log segments into thick veneers with the thickness of 6-10mm on a thick veneer rotary cutter;
2) Drying and stabilizing the thick veneer: firstly, drying a thick veneer until the water content is below 18%, then putting the thick veneer into an impregnating tank, injecting a saturated aqueous solution of calcium chloride, pressurizing and impregnating for a certain time, and taking out the thick veneer; firstly, placing the materials into a dryer or a drying kiln, and drying the materials at the temperature of 95-105 ℃ until the water content of the single board is 12-16%; then placing the mixture into a hot press, heating to 180-240 ℃, carbonizing at high temperature for 3-10min under the condition that the unit pressure is 0.2-0.6MPa, and taking out the mixture to prepare a thick veneer with stable size;
3) Manufacturing a thick core substrate: forming a four-layer board by the stabilized two-layer thick veneers and the two-layer thin veneers, and coating Shi Regu aldehyde-free adhesive between adjacent thick veneers with the adhesive coating amount of 130-180g/m 2 Then placing the plate blank into a hot press, hot-pressing under the conditions of unit pressure of 0.8-1.2MPa and hot-pressing temperature of 90-110 ℃, releasing pressure, taking out the glued plate blank, stacking for more than 8 hours at room temperature, and carrying out edge trimming, thickness fixing and sanding to obtain a thick core substrate;
4) And (3) veneering and forming the thick core substrate: will beThe surface of the thick core substrate manufactured after trimming, thickness fixing and sanding is coated with aldehyde-free adhesive, and the single-sided adhesive coating amount is 80-120g/m 2 Aging for 10-30min, laying a layer of oxygen anion membrane material with antibacterial property on the front surface, laying a layer of soaking balance membrane material on the back surface, putting into a hot press, hot-pressing for 1.0-2.0min under the conditions of unit pressure of 0.8-1.2MPa and hot-pressing temperature of 120-140 ℃, taking out, cooling, and sawing into standard and dimension to obtain the high-stability formaldehyde-free functional decorative plate.
2. The method for manufacturing a high-stability aldehyde-free functional decorative board according to claim 1, wherein: the impregnation time is determined by the diameter of the log, and the diameter is 0.5-2.0min for each 1 mm.
3. The method for manufacturing a high-stability aldehyde-free functional decorative board according to claim 1, wherein: the hot pressing is carried out for 0.8-1.2min per 1mm of plate blank thickness.
4. The method for manufacturing a high-stability aldehyde-free functional decorative board according to claim 1, wherein: the impregnated balance film material is impregnated paper or impregnated non-woven fabric.
5. A high stability formaldehyde free functional trim panel made by the method of any one of claims 1-4, characterized by: the formaldehyde-free functional decorative board consists of 6 layers, wherein the front surface of the outermost layer is a surface functional decorative film with antibacterial property and oxygen anion excitation function, and the back surface of the outermost layer is a back surface balance decorative layer with a balance function; the secondary outer layer is two layers of transverse reinforced thin veneers which are symmetrically paved and have the thickness of 1.5-2.0 mm; the middle core layer is a modified longitudinal thick core plate which is symmetrically paved and has the thickness of 6.0-10.0mm and is subjected to nano calcium filling and carbonization modification; and adjacent veneers are glued by adopting formaldehyde-free adhesive.
CN201810433001.3A 2018-05-08 2018-05-08 High-stability formaldehyde-free functional decorative board and manufacturing method thereof Active CN108393977B (en)

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Publication number Priority date Publication date Assignee Title
CN109571651A (en) * 2018-12-14 2019-04-05 沭阳县金森源木业有限公司 A kind of thickness core plate rotary cutting method
CN113618867A (en) * 2021-07-22 2021-11-09 左众文 Manufacturing method of environment-friendly heavy-duty decorative plate
CN114571549A (en) * 2022-03-01 2022-06-03 南京爱克斯射线防护技术有限公司 Radiation protection multiply wood

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CN102785273A (en) * 2012-08-31 2012-11-21 广西南宁绿园北林木业有限公司 Three-hot-pressing and two-sanding eucalyptus poplar composite artificial board and method for manufacturing same
CN103692505A (en) * 2013-12-10 2014-04-02 福建农林大学 Carbonized plywood and manufacturing method thereof
CN104608211A (en) * 2015-02-06 2015-05-13 寿光市鲁丽木业有限公司 Plywood with super-thick core layer and preparation process thereof
CN104890069A (en) * 2015-06-25 2015-09-09 安徽农业大学 Composite CaCO<3>/wood material and manufacturing method thereof
CN105729587A (en) * 2016-03-07 2016-07-06 德华兔宝宝装饰新材股份有限公司 Ecological decorative board

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CN102785273A (en) * 2012-08-31 2012-11-21 广西南宁绿园北林木业有限公司 Three-hot-pressing and two-sanding eucalyptus poplar composite artificial board and method for manufacturing same
CN103692505A (en) * 2013-12-10 2014-04-02 福建农林大学 Carbonized plywood and manufacturing method thereof
CN104608211A (en) * 2015-02-06 2015-05-13 寿光市鲁丽木业有限公司 Plywood with super-thick core layer and preparation process thereof
CN104890069A (en) * 2015-06-25 2015-09-09 安徽农业大学 Composite CaCO<3>/wood material and manufacturing method thereof
CN105729587A (en) * 2016-03-07 2016-07-06 德华兔宝宝装饰新材股份有限公司 Ecological decorative board

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