CN104942908A - Method for manufacturing environment-friendly eucalyptus plywood - Google Patents
Method for manufacturing environment-friendly eucalyptus plywood Download PDFInfo
- Publication number
- CN104942908A CN104942908A CN201510321988.6A CN201510321988A CN104942908A CN 104942908 A CN104942908 A CN 104942908A CN 201510321988 A CN201510321988 A CN 201510321988A CN 104942908 A CN104942908 A CN 104942908A
- Authority
- CN
- China
- Prior art keywords
- veneer
- adhesive
- eucalyptus
- parts
- glued board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a method for manufacturing environment-friendly eucalyptus plywood. The method comprises the following steps: (1) pretreating eucalyptus; (2) taking the eucalyptus obtained through pretreatment as a veneer, adopting a composite face veneer structure, and preparing a face veneer and a core veneer; causing the thickness of the veneer to be 1.85 mm, adopting a roller drying machine to perform veneer drying, causing the water content of the core veneer to be below 4.8%, and causing the water content of the face veneer to be 9.5%; (3) performing glue mixing treatment on adhesive that is prepared by tea water containing tea polyphenols, polyethylene glycol, thiourea and urea solution, and being capable of adding 15-20% of composite additive during the glue mixing; and (4) using the adhesive after the glue mixing to perform adhesion of the core veneer and the face veneer through a plywood assembly, gluing and hot pressing process, so as to manufacture the needed plywood. According to the technical scheme, the method can overcome the shortcomings of high material cost, short service life and poor safety and poor environmental protection property in the prior art so as to have the advantages of low material cost, long service life and good safety and good environmental protection property.
Description
Technical field
The present invention relates to plank processing technique field, particularly, relate to a kind of manufacture method of environment-friendly type Eucalyptus glued board.
Background technology
Glued board also claims clamping plate, is commonly called as thin central layer.Formed by the veneer of three layers or multilayer one millimeters thick or the hot pressing of thin plate sticker.The advantages such as glued board has that little, the breadth of distortion is large, easy construction, non-warpage, band tensile mechanical performance are good, therefore be widely used in the use of the industrial departments such as Furniture manufacture, interior decoration, residential housing and shipbuilding, railway carriage manufacture, various military project, light industrial goods and packaging.
In recent years, with the fast development of the upstream and downstream industries such as real estate, furniture, architectural engineering, logistics packaging, the demand of market to glued board plate grows to even greater heights, wood processing industry also obtain fast development, the market demand of glued board constantly increases always, and its production technology, product quality also have a distinct increment.
The production of glued board, hot pressing is key procedure, and most producer producing glued board, all uses formaldehyde or carbamide resin, can discharge free formaldehyde gas, there is serious formaldehyde pollution in hot pressing process at present.And due to the problem of production technology level, the glued board of production technical indicator not high enough in wear-resisting, corrosion-resistant, MOR, bonding strength, shock resistance degree etc., can not better meet market demand.
Realizing in process of the present invention, inventor finds at least to exist in prior art the defect such as material cost is high, service life is short and Safety and Environmental Protection is poor.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of manufacture method of environment-friendly type Eucalyptus glued board, to realize that the cost of material is low, long service life and the good advantage of Safety and Environmental Protection.
For achieving the above object, the technical solution used in the present invention is: a kind of manufacture method of environment-friendly type Eucalyptus glued board, comprising:
(1) pretreatment is carried out to Eucalyptus;
(2) Eucalyptus pretreatment obtained, as veneer, adopts composite table plate structure, prepares dash board and central layer; The thickness of veneer is 1.85mm, and veneer drying adopts roller dryer, and central layer moisture content is below 4.8%, and dash board moisture content is 9.5%;
(3) carry out impregnation process to by the adhesive obtained containing the Aqua Folium Camelliae sinensis of Tea Polyphenols, polyethylene glycol, thiocarbamide and urea liquid, the compound additive of l5% ~ 20% can be added during impregnation, to increase the dry matter content of adhesive, reduce the moisture in slab, be conducive to the control of heat pressing process like this; The preparation method of this adhesive is as follows:
1. by each component of following parts by weight proportioning:
Aqua Folium Camelliae sinensis: 8.9 parts;
Polyethylene glycol: 5 parts;
Thiocarbamide: 6.8 parts;
Urea liquid: 7 parts;
Epoxy resin: 11 parts;
Polyetheramine: 10.5 parts;
2. after each component being pressed corresponding parts by weight proportioning, under the temperature conditions of 50 ~ 60 degree, by the obtained required adhesive of glue making machine;
(4) use the adhesive after impregnation, by glued board assembly, gluing and heat pressing process, by central layer and dash board bonding, obtained required glued board.
The manufacture method of the environment-friendly type Eucalyptus glued board of various embodiments of the present invention, owing to comprising: (1) carry out pretreatment to Eucalyptus; (2) Eucalyptus pretreatment obtained, as veneer, adopts composite table plate structure, prepares dash board and central layer; The thickness of veneer is 1.85mm, and veneer drying adopts roller dryer, and central layer moisture content is below 4.8%, and dash board moisture content is 9.5%; (3) carry out impregnation process to by the adhesive obtained containing the Aqua Folium Camelliae sinensis of Tea Polyphenols, polyethylene glycol, thiocarbamide and urea liquid, the compound additive of l5% ~ 20% during impregnation, can be added; (4) use the adhesive after impregnation, by glued board assembly, gluing and heat pressing process, by central layer and dash board bonding, obtained required glued board; Thus the defect that in prior art, material cost is high, service life is short and Safety and Environmental Protection is poor can be overcome, to realize that the cost of material is low, long service life and the good advantage of Safety and Environmental Protection.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from description, or understand by implementing the present invention.
Below by embodiment, technical scheme of the present invention is described in further detail.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Technical scheme of the present invention, Eucalyptus is utilized to develop low formaldehyde environment protection type high-strength Eucalyptus glued board, by carrying out modification to Eucalyptus, formaldehyde pollution is controlled to the improvement of glue formula, uses the intensity of special this guarantee of structural design production technology glued board, the physical index such as wear-resisting, and the main production equipments such as plate paver are improved, while reaching the low formaldehyde high strength of glued board environmental protection, to enhance productivity, save consumption of wood.
According to the embodiment of the present invention, provide a kind of manufacture method of environment-friendly type Eucalyptus glued board, comprising:
(i) Eucalyptus pretreatment
(ii) Eucalyptus plywood product conceptual design
(1) raw material Choice and design: take Eucalyptus as primary raw material, had both taken full advantage of the various excellent performance of Eucalyptus, also make the quality of product and combination property more excellent.
(2) product assembly structure: adopt the design of composite table plate structure.This structure can reduce hot pressing pressure and wood compression rate, and the ratio of strength to weight of product is higher, solves high pressure simultaneously, high compression rate product Wet-resilient is large and be out of shape large problem.
(3) veneer machined parameters design: when manufacturing the veneer of glued board, according to thin veneer, is conducive to the mechanical property improving glued board, but too increases the veneer number of plies of glued board, add the difficulty of consumption glue amount and plywood heat pressing process.And apply thick veneer, when particularly the thickness of Eucalyptus brachymedial plate is greater than 2.0mm, the mechanical property of plank is difficult to improve, this mainly due to Eucalyptus veneer thicker time, easily hear from veneer string cut off, layering.
In technical solution of the present invention, veneer thickness controls between 1.85mm, and veneer drying adopts roller dryer, can improve veneer flatness, reduces consumption glue amount; Central layer moisture content is below 4.8%, and dash board moisture content, at 8% ~ l0%, can ensure to reach best mechanical performance index.
(iii) adhesive improvement
One of material that adhesive must use as glued board, can produce free formaldehyde in production with in using, cause environmental pollution.Control Form aldehyde release, reach environmental protection object, must improve its formula and add suitable additive.Adopt Aqua Folium Camelliae sinensis (containing Tea Polyphenols), polyethylene glycol, thiocarbamide, urea liquid etc. through series of process improvement glue, the glued board burst size of methanal≤0.5mg/100g of production, is much higher than national standard, reaches international E0 standard.
(iv) the design of production technology and the improvement of production line, the mainly improvement of bed board equipment
(1) glued board assembly, gluing and heat pressing process
The glue adopted in production, be conducive to improving its curing rate, shortens hot pressing time.The compound additive of l5% ~ 20% can be added during impregnation, to increase the dry matter content of adhesive, reduce the moisture in slab, be conducive to the control of heat pressing process like this.Be also noted that the problem in veneer degree of tightness face during assembly, to make the institutional framework of structural plywood symmetrical, reduce product buckling deformation.
Use formaldehyde or carbamide resin in present plywood hot-pressing operation, there is serious formaldehyde pollution; And due to production technology backwardness, glued board is the low inferior problem of quality and technical index in wear-resisting, corrosion-resistant, MOR, bonding strength, shock resistance degree etc.Technical scheme of the present invention, uses the adhesive of special process and formula improvement, improves bed board production equipment, solve relevant issues pollution problem and waste of raw materials problem, substantially increase production efficiency, cost-saving more than 25%.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a manufacture method for environment-friendly type Eucalyptus glued board, is characterized in that, comprising:
(1) pretreatment is carried out to Eucalyptus;
(2) Eucalyptus pretreatment obtained, as veneer, adopts composite table plate structure, prepares dash board and central layer; The thickness of veneer is 1.85mm, and veneer drying adopts roller dryer, and central layer moisture content is below 4.8%, and dash board moisture content is 9.5%;
(3) carry out impregnation process to by the adhesive obtained containing the Aqua Folium Camelliae sinensis of Tea Polyphenols, polyethylene glycol, thiocarbamide and urea liquid, the compound additive of l5% ~ 20% can be added during impregnation, to increase the dry matter content of adhesive, reduce the moisture in slab, be conducive to the control of heat pressing process like this; The preparation method of this adhesive is as follows:
1. by each component of following parts by weight proportioning:
Aqua Folium Camelliae sinensis: 8.9 parts;
Polyethylene glycol: 5 parts;
Thiocarbamide: 6.8 parts;
Urea liquid: 7 parts;
Epoxy resin: 11 parts;
Polyetheramine: 10.5 parts;
2. after each component being pressed corresponding parts by weight proportioning, under the temperature conditions of 50 ~ 60 degree, by the obtained required adhesive of glue making machine;
(4) use the adhesive after impregnation, by glued board assembly, gluing and heat pressing process, by central layer and dash board bonding, obtained required glued board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321988.6A CN104942908A (en) | 2015-06-12 | 2015-06-12 | Method for manufacturing environment-friendly eucalyptus plywood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321988.6A CN104942908A (en) | 2015-06-12 | 2015-06-12 | Method for manufacturing environment-friendly eucalyptus plywood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104942908A true CN104942908A (en) | 2015-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510321988.6A Pending CN104942908A (en) | 2015-06-12 | 2015-06-12 | Method for manufacturing environment-friendly eucalyptus plywood |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186854A (en) * | 2017-07-25 | 2017-09-22 | 安徽省科晟生态木装饰材料有限公司 | A kind of preparation method of ecological board not easy to crack |
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| CN101456195A (en) * | 2008-04-28 | 2009-06-17 | 国家林业局北京林业机械研究所 | Structure plywood plate for timber-construction and production method thereof |
| CN101791811A (en) * | 2010-03-30 | 2010-08-04 | 嘉汉林业(广州)有限公司 | Combined lumber and fabrication technique thereof |
| CN101890739A (en) * | 2010-07-16 | 2010-11-24 | 成都市双虎实业有限公司 | Composite slab with symmetric structure and manufacturing method thereof |
| WO2011085559A1 (en) * | 2010-01-15 | 2011-07-21 | Style Limited | Methods of making manufactured eucalyptus wood products |
| WO2011085691A1 (en) * | 2010-01-15 | 2011-07-21 | Style Limited | Moisture control for manufactured wood products |
| CN202208047U (en) * | 2011-08-03 | 2012-05-02 | 大连建丰木业有限公司 | Eucalyptus wood profile for package box |
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2015
- 2015-06-12 CN CN201510321988.6A patent/CN104942908A/en active Pending
Patent Citations (7)
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| CN101396839A (en) * | 2007-09-30 | 2009-04-01 | 汤可新 | Preparation method of environmental protection type solid-wood composite floor |
| CN101456195A (en) * | 2008-04-28 | 2009-06-17 | 国家林业局北京林业机械研究所 | Structure plywood plate for timber-construction and production method thereof |
| WO2011085559A1 (en) * | 2010-01-15 | 2011-07-21 | Style Limited | Methods of making manufactured eucalyptus wood products |
| WO2011085691A1 (en) * | 2010-01-15 | 2011-07-21 | Style Limited | Moisture control for manufactured wood products |
| CN101791811A (en) * | 2010-03-30 | 2010-08-04 | 嘉汉林业(广州)有限公司 | Combined lumber and fabrication technique thereof |
| CN101890739A (en) * | 2010-07-16 | 2010-11-24 | 成都市双虎实业有限公司 | Composite slab with symmetric structure and manufacturing method thereof |
| CN202208047U (en) * | 2011-08-03 | 2012-05-02 | 大连建丰木业有限公司 | Eucalyptus wood profile for package box |
Non-Patent Citations (1)
| Title |
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| 王金权: "胶合板甲醛污染控制关键技术研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186854A (en) * | 2017-07-25 | 2017-09-22 | 安徽省科晟生态木装饰材料有限公司 | A kind of preparation method of ecological board not easy to crack |
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Application publication date: 20150930 |