CN105479557A - Processing technology of flame-retardant plywood - Google Patents
Processing technology of flame-retardant plywood Download PDFInfo
- Publication number
- CN105479557A CN105479557A CN201510822047.0A CN201510822047A CN105479557A CN 105479557 A CN105479557 A CN 105479557A CN 201510822047 A CN201510822047 A CN 201510822047A CN 105479557 A CN105479557 A CN 105479557A
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- CN
- China
- Prior art keywords
- veneer
- flame
- retardant
- hot pressing
- processing technology
- 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.)
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
Abstract
The invention discloses a processing technology of flame-retardant plywood. Through the preparation of a glue solution, the glue applied on veneers can be enabled to be uniform, the adhesivity between the two veneers is further enabled to be high, and the quality of the flame-retardant plywood is ensured; and under the thermal pressure control, the device consumption can be reduced when the outturn percentage is increased. The flame-retardant plywood, processed according to the processing technology, has the advantage of high flame retardant property, and has a wide market prospect.
Description
Technical field
The present invention relates to flame-retardant board production technology, particularly relate to a kind of processing technology of flame-retardant plywood.
Background technology
Flame-retardant board, become wood chip by rounding or become scantling block by flitch slicing, stick with glue three layers of agent gummed or the glued board of multilayer after flame treatment is carried out to wood chip again, usually use odd-level wood chip, and the orthogonal gummed of the machine direction of adjacent layer wood chip is formed.Flame-retardant board take timber as the flame-retardant board of main material production, due to the retrofit in the reasonability of its structure and production process, the defect that can overcome timber substantially improves the physical and mechanical property of timber greatly, difficult combustion glued board also overcomes the incendive shortcoming of normal plywood simultaneously, effectively improve glued board fire resistance, it is the important method sufficiently and reasonably utilizing timber, improve wood performance that flame-retardant board is produced.
Summary of the invention
The invention provides a kind of processing technology of flame-retardant plywood.For realizing object of the present invention, technical scheme of the present invention is as follows:
A processing technology for flame-retardant plywood, its concrete steps are:
(1) raw-material selection
Select eucalyptus and the willow of 2-4 life, be cut into the veneer that specification is 200mm × 200-240 × 240mm;
(2) dry
Put in air dry oven by veneer after processing and carry out drying, dry temperature is 150-170 DEG C, and the dry time is 1.2-1.4h;
(3) fire retardant impregnation process
By PNB-1 and FRS fire retardant wiring solution-forming, solution concentration is 10-20%, is immersed in fire retardant by dried veneer and floods, and dip time is 5-7h;
(4) fire-retardant veneer is washed
Rinse veneer with the water of flowing, the time of flushing is 6-8min, and the speed of flowing water is 20-40m3/min;
(5) dry again
It is in the drying box of 80-100 DEG C that veneer after washing is placed on temperature, and drying time is 1-2h, moisture content 10-12%;
(6) gluing
Dried veneer is carried out applying glue with the glue prepared respectively;
(7) ageing
Be placed in ageing room by veneer after gluing and carry out ageing, temperature is 23-25 DEG C, and the time is 10-12h;
(8) assembly
The veneer of ageing is arranged according to the mode that adjacent layer grain direction is vertical;
(9) hot pressing
Put in hot press by the slab that assembly is good and carry out hot pressing, the temperature of hot pressing is 80-100 DEG C;
(10) cutting edge
Veneer after hot pressing is carried out cutting edge process, forms finished product;
(11) check
Buttress after cutting edge is tested according to standard, forms finished product after the assay was approved.
Preferably, in described step (6) glue consist of phenol, formaldehyde, Na0H, promoter and water, the viscosity of described glue is 40-42s.
Preferably, the Stress control of described step (9) hot pressing is at 0.5-1.5MPa.
Beneficial effect: the processing technology that the invention provides a kind of flame-retardant plywood, the composition of glue, the applying glue of veneer can be made even, and then make both cohesives good, ensure that the quality of flame-retardant plywood, the Stress control of hot pressing, equipment loss can be reduced again while volume recovery can be increased, with the flame-retardant plywood of this kind of processes, there is the advantage that fire resistance is strong, there are wide market prospects.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
A processing technology for flame-retardant plywood, its concrete steps are:
(1) raw-material selection
Select eucalyptus and the willow of life in 3 years, be cut into the veneer that specification is 220mm × 220mm;
(2) dry
Put in air dry oven by veneer after processing and carry out drying, dry temperature is 160 DEG C, and the dry time is 1.3h;
(3) fire retardant impregnation process
By PNB-1 and FRS fire retardant wiring solution-forming, solution concentration is 15%, is immersed in fire retardant by dried veneer and floods, and dip time is 6h;
(4) fire-retardant veneer is washed
Rinse veneer with the water of flowing, the time of flushing is 7min, and the speed of flowing water is 30m3/min;
(5) dry again
It is in the drying box of 90 DEG C that veneer after washing is placed on temperature, and drying time is 1.5h, moisture content 11%;
(6) gluing
Dried veneer is carried out applying glue with the glue prepared respectively, glue consist of phenol, formaldehyde, Na0H, promoter and water, the viscosity of described glue is 41s;
(7) ageing
Be placed in ageing room by veneer after gluing and carry out ageing, temperature is 24 DEG C, and the time is 11h;
(8) assembly
The veneer of ageing is arranged according to the mode that adjacent layer grain direction is vertical;
(9) hot pressing
Put in hot press by the slab that assembly is good and carry out hot pressing, the temperature of hot pressing is 90 DEG C, and the Stress control of hot pressing is at 1MPa;
(10) cutting edge
Veneer after hot pressing is carried out cutting edge process, forms finished product;
(11) check
Buttress after cutting edge is tested according to standard, forms finished product after the assay was approved.
The invention provides a kind of processing technology of flame-retardant plywood, the composition of glue, the applying glue of veneer can be made even, and then make both cohesives good, ensure that the quality of flame-retardant plywood, the Stress control of hot pressing, equipment loss can be reduced again while volume recovery can be increased, with the flame-retardant plywood of this kind of processes, there is the advantage that fire resistance is strong, there are wide market prospects.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a processing technology for flame-retardant plywood, is characterized in that, its concrete steps are:
(1) raw-material selection
Select eucalyptus and the willow of 2-4 life, be cut into the veneer that specification is 200mm × 200-240 × 240mm;
(2) dry
Put in air dry oven by veneer after processing and carry out drying, dry temperature is 150-170 DEG C, and the dry time is 1.2-1.4h;
(3) fire retardant impregnation process
By PNB-1 and FRS fire retardant wiring solution-forming, solution concentration is 10-20%, is immersed in fire retardant by dried veneer and floods, and dip time is 5-7h;
(4) fire-retardant veneer is washed
Rinse veneer with the water of flowing, the time of flushing is 6-8min, and the speed of flowing water is 20-40m3/min;
(5) dry again
It is in the drying box of 80-100 DEG C that veneer after washing is placed on temperature, and drying time is 1-2h, moisture content 10-12%;
(6) gluing
Dried veneer is carried out applying glue with the glue prepared respectively;
(7) ageing
Be placed in ageing room by veneer after gluing and carry out ageing, temperature is 23-25 DEG C, and the time is 10-12h;
(8) assembly
The veneer of ageing is arranged according to the mode that adjacent layer grain direction is vertical;
(9) hot pressing
Put in hot press by the slab that assembly is good and carry out hot pressing, the temperature of hot pressing is 80-100 DEG C;
(10) cutting edge
Veneer after hot pressing is carried out cutting edge process, forms finished product;
(11) check
Buttress after cutting edge is tested according to standard, forms finished product after the assay was approved.
2. the processing technology of a kind of flame-retardant plywood according to claim 1, is characterized in that, in described step (6) glue consist of phenol, formaldehyde, Na0H, promoter and water, the viscosity of described glue is 40-42s.
3. the processing technology of a kind of flame-retardant plywood according to claim 1, is characterized in that, the Stress control of described step (9) hot pressing is at 0.5-1.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822047.0A CN105479557A (en) | 2015-11-23 | 2015-11-23 | Processing technology of flame-retardant plywood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822047.0A CN105479557A (en) | 2015-11-23 | 2015-11-23 | Processing technology of flame-retardant plywood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105479557A true CN105479557A (en) | 2016-04-13 |
Family
ID=55667003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510822047.0A Pending CN105479557A (en) | 2015-11-23 | 2015-11-23 | Processing technology of flame-retardant plywood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105479557A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363715A (en) * | 2016-08-31 | 2017-02-01 | 广西大学 | Manufacturing method of high-gluability flame-retardant plywood |
| CN111975888A (en) * | 2020-08-13 | 2020-11-24 | 南京和木新材料科技发展有限公司 | Environment-friendly multilayer board gluing process |
| CN113290657A (en) * | 2021-05-21 | 2021-08-24 | 深圳市深炜科技有限公司 | Plywood processing technology |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068585A (en) * | 1991-05-09 | 1993-02-03 | 伊索福圣戈班公司 | The preparation method of phenolic binder |
| US20050006003A1 (en) * | 2001-10-26 | 2005-01-13 | Kuniharu Yokoo | Laminated composite wooden material and method of manufacturing material |
| CN1603075A (en) * | 2004-11-04 | 2005-04-06 | 白世魁 | Method for producing mass material of compactness toughening veneer |
| US20050121108A1 (en) * | 2003-11-24 | 2005-06-09 | Raute Oyj | Method for determination of optimal spin axis for a log for peeling in a veneer lathe |
| CN1792579A (en) * | 2005-12-02 | 2006-06-28 | 南京林业大学 | Method for mfg. fire retardant poplar wood/glass fibre composite material |
| CN101054504A (en) * | 2006-04-16 | 2007-10-17 | 邹静中 | Process for preparing formaldehyde-free phenolic resin adhesive |
| CN104858947A (en) * | 2015-04-29 | 2015-08-26 | 安徽国泰印务有限公司 | Processing technology for flame retardant veneers |
-
2015
- 2015-11-23 CN CN201510822047.0A patent/CN105479557A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068585A (en) * | 1991-05-09 | 1993-02-03 | 伊索福圣戈班公司 | The preparation method of phenolic binder |
| US20050006003A1 (en) * | 2001-10-26 | 2005-01-13 | Kuniharu Yokoo | Laminated composite wooden material and method of manufacturing material |
| US20050121108A1 (en) * | 2003-11-24 | 2005-06-09 | Raute Oyj | Method for determination of optimal spin axis for a log for peeling in a veneer lathe |
| CN1603075A (en) * | 2004-11-04 | 2005-04-06 | 白世魁 | Method for producing mass material of compactness toughening veneer |
| CN1792579A (en) * | 2005-12-02 | 2006-06-28 | 南京林业大学 | Method for mfg. fire retardant poplar wood/glass fibre composite material |
| CN101054504A (en) * | 2006-04-16 | 2007-10-17 | 邹静中 | Process for preparing formaldehyde-free phenolic resin adhesive |
| CN104858947A (en) * | 2015-04-29 | 2015-08-26 | 安徽国泰印务有限公司 | Processing technology for flame retardant veneers |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363715A (en) * | 2016-08-31 | 2017-02-01 | 广西大学 | Manufacturing method of high-gluability flame-retardant plywood |
| CN111975888A (en) * | 2020-08-13 | 2020-11-24 | 南京和木新材料科技发展有限公司 | Environment-friendly multilayer board gluing process |
| CN113290657A (en) * | 2021-05-21 | 2021-08-24 | 深圳市深炜科技有限公司 | Plywood processing technology |
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Application publication date: 20160413 |