CN103773296A - Glue composition for plywood - Google Patents
Glue composition for plywood Download PDFInfo
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- CN103773296A CN103773296A CN201310725985.XA CN201310725985A CN103773296A CN 103773296 A CN103773296 A CN 103773296A CN 201310725985 A CN201310725985 A CN 201310725985A CN 103773296 A CN103773296 A CN 103773296A
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Abstract
The invention provides a glue composition for plywood, which is prepared by adding 6-8 parts by mass of Acacia bark powder, 13-27 parts by mass of inorganic filler and 23-32 parts by mass of water in 100 parts by mass of resole aqueous liquid containing 25-35wt% of resin component and blending. According to the invention, a veneer is coated with the glue composition, multiple veneers are overlapped and pressurized and heated to prepare the plywood. Accordingly, the increment of the viscosity of the glue composition for the plywood after blending is inhibited, the stratification of the plywood during preparation can be inhibited under the conditions that the veneer having ordinary moisture content or low moisture content and the veneer having high moisture content are both used, and drying problem is inhibited.
Description
Technical field
The invention belongs to glued board and stick with glue agent composition.
Background technology
For meeting the ever-increasing demand of timber-work, artificial fast growing wood and small diameter grade assortment will become the main raw material of wood processing industry.Therefore, making full use of felling residuum, industrial wood waste and inferior timber development wood-based plate and artificial splicing goods, is one of effective measure that solve timber imbalance between supply and demand, and tackiness agent plays very important effect therein.
In the past, stick with glue agent composition as the glued board of the manufacture for glued board, known have as described in Patent Document 1, for the viscosity suppressing after the modulation of adhesive compound increases, and be added with the organic fillers such as mineral filler and wood powder such as calcium carbonate in the aqueous solution of resole.
But, in adhesive compound, if reduce the addition of water, in the time that adhesive compound is applied to veneer, easily become dry (dry-out) state, the problem that exists gummed power to reduce.
Summary of the invention
The object of the present invention is to provide a kind of glued board to stick with glue agent composition, use this glued board to stick with glue the manufacture method of glued board of agent composition and the glued board producing by this manufacture method, viscosity increase after the modulation of adhesive compound is inhibited, not only in the case of using the veneer that water ratio is general or water ratio is low, and in the case of using the veneer of high-moisture percentage, demixing phenomenon when plywood making is also inhibited, and dry problem is also inhibited.
The present invention realizes by following technology:
Be in the resole aqueous solution 100 mass parts of 25-35 mass percent, to add yearning between lovers bark fines 6-8 mass parts, mineral filler 13-27 mass parts and water 23-32 mass parts to make to resinous principle.
Find by research, add the mineral fillers such as yearning between lovers bark fines, calcium carbonate and water and the paste liquid that modulates in the resole aqueous solution, the viscosity increase after its modulation is inhibited.And it is relatively many that the water amount of having found this paste liquid sticks with glue agent composition than glued board in the past, therefore, dry problem is inhibited, and demixing phenomenon when plywood making is also inhibited.By in industrial use, water ratio is 10% to 17%, though the gummed between the veneer of having found to remain in this case enough, and suppress dry problem, the required paste liquid composition of demixing phenomenon while suppressing plywood making.And, found to use the glued board that this paste liquid produces warpage, rising and falling is inhibited.
Embodiment
Embodiment 1
Be in the resole aqueous solution 100 mass parts of 25-35 mass percent, to add yearning between lovers bark fines 6-8 mass parts, mineral filler 13-27 mass parts and water 23-32 mass parts to make to resinous principle.
In the present embodiment, the median size of preferred described yearning between lovers bark fines is 50-100 μ m.Due to the median size less than 50 μ m of yearning between lovers bark fines, the dispersiveness of yearning between lovers bark fines in adhesive compound reduces, if exceed 100 μ m, easily stops up the applying device of adhesive compound.
In the present embodiment, also can preferably add polyvinyl alcohol 0.5-1 mass parts and make.Improve the interim gummed of veneer and prevent from sticking with paste the dry effect of liquid because polyvinyl alcohol has.As addition less than 0.5 mass parts of pectin/polyvinyl alcohol, can reduce the validity of interpolation, if exceed 1 mass parts, can reduce economy.
In the present embodiment, preferably also can add silicon-dioxide 0.5-1 mass parts and make.This is to stick with paste the coating workability of liquid and the dry effect that suppresses to stick with paste liquid because silicon-dioxide has to improve.If addition less than 0.5 mass parts of silicon-dioxide, can reduce the validity of interpolation, if exceed 1 mass parts, can reduce economy.
Manufacture method: above-mentioned glued board is sticked with glue to agent composition and be applied to veneer, and by overlapping multiple described veneers and pressurize, heat and make.
The wood adhesive performance that the present invention makes is as follows:
1. viscosity
Use NDJ-9s Digital Viscometer, measure by GB/T 2794-1995.
2. stability
Mechanical stability: with 800 type centrifuge separators, under 3000r/min, rotate continuously 15 minutes, bureaucratic airs has or not layering; Room temperature stability: room temperature lower seal leaves standstill, and routine observation has or not layering.
3. solid content
Measure with reference to GB/T 2793-1995
4. the cohesiveness of sizing agent
Wood specimen size 12cm*6cm*1.5cm, bond length 12cm, press curing 5d.Style is soaked respectively in 70 ℃ of water, 10% sulfuric acid and 10% sodium hydroxide solution, test water tolerance, erosion resistance.
5. surface drying time and doing solid work the time
Get the sizing agent of appropriate preparation, be applied on the glass dish after cleaning, test surface drying time and do solid work the time.
The results are shown in Table 1
Claims (4)
1. glued board sticks with glue an agent composition, it is characterized in that obtaining by the following method:
Be in the resole aqueous solution 100 mass parts of 25-35 mass percent, to add yearning between lovers bark fines 6-8 mass parts, mineral filler 13-27 mass parts and water 23-32 mass parts to make to resinous principle.
2. a kind of glued board according to claim 1 sticks with glue agent composition, and the median size that it is characterized in that described yearning between lovers bark fines is 50-100 μ m.
3. a kind of glued board according to claim 1 sticks with glue agent composition, it is characterized in that also can adding polyvinyl alcohol 0.5-1 mass parts and makes.
4. a kind of glued board according to claim 1 sticks with glue agent composition, it is characterized in that also can adding silicon-dioxide 0.5-1 mass parts and makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725985.XA CN103773296A (en) | 2013-12-25 | 2013-12-25 | Glue composition for plywood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725985.XA CN103773296A (en) | 2013-12-25 | 2013-12-25 | Glue composition for plywood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103773296A true CN103773296A (en) | 2014-05-07 |
Family
ID=50566071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310725985.XA Pending CN103773296A (en) | 2013-12-25 | 2013-12-25 | Glue composition for plywood |
Country Status (1)
| Country | Link |
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| CN (1) | CN103773296A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760096A (en) * | 2015-03-30 | 2015-07-08 | 广西宾阳县荣良新材料科技有限公司 | Production method of anticorrosion low-formaldehyde composite solid wood floor |
| CN105440970A (en) * | 2014-08-21 | 2016-03-30 | 上海胤东化工科技有限公司 | Micro particles added in adhesive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584889C (en) * | 2002-03-08 | 2010-01-27 | 株式会社伍德第一 | Method for producing powder with high tannin content and its application |
| CN102892855A (en) * | 2010-05-06 | 2013-01-23 | 株式会社越井木材万事通 | Adhesive composition for plywood, method for producing plywood, and plywood |
-
2013
- 2013-12-25 CN CN201310725985.XA patent/CN103773296A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584889C (en) * | 2002-03-08 | 2010-01-27 | 株式会社伍德第一 | Method for producing powder with high tannin content and its application |
| CN102892855A (en) * | 2010-05-06 | 2013-01-23 | 株式会社越井木材万事通 | Adhesive composition for plywood, method for producing plywood, and plywood |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440970A (en) * | 2014-08-21 | 2016-03-30 | 上海胤东化工科技有限公司 | Micro particles added in adhesive |
| CN104760096A (en) * | 2015-03-30 | 2015-07-08 | 广西宾阳县荣良新材料科技有限公司 | Production method of anticorrosion low-formaldehyde composite solid wood floor |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |