CN110480784A - A kind of preparation process of zero formaldehyde log particle board - Google Patents
A kind of preparation process of zero formaldehyde log particle board Download PDFInfo
- Publication number
- CN110480784A CN110480784A CN201910737094.3A CN201910737094A CN110480784A CN 110480784 A CN110480784 A CN 110480784A CN 201910737094 A CN201910737094 A CN 201910737094A CN 110480784 A CN110480784 A CN 110480784A
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- CN
- China
- Prior art keywords
- log
- particle board
- preparation process
- wood shavings
- zero formaldehyde
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- 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
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- 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
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The present invention relates to a kind of preparation processes of zero formaldehyde log particle board, its key points of the technical solution are that: production stage are as follows: chipped after stacking log, flaking, drying and obtain two kinds of wood shavings particles of top layer raw material and core layer raw material by screening, add PMDI ecology glue again and self-control aldehyde-free cement mixed, mated formation, precompressed, hot pressing and post-processing finished product particle board can sorting storage.The preparation process of zero formaldehyde log particle board of one kind of the invention, wood shavings board finished product obtained have the advantages that content of formaldehyde is zero, safe to use, environmentally protective and intensity is high and production technology is easily achieved.
Description
Technical field
The invention belongs to artificial board technology fields, more specifically, it relates to a kind of preparation of zero formaldehyde log particle board
Technique.
Background technique
Solid wood granule plate is one kind of particieboard, is the particle made of timber or other ligno-cellulosic materials, both sides
Using fine and closely woven wood-fibred, centre presss from both sides long matter wood-fibred, applies the wood-based plate composed under heating power and pressure effect after adhesive,
It is the plate produced with the technique of particieboard.Solid wood granule plate as a kind of novel, high-grade environmental protection substrate by American-European countries
Tool manufacturer is widely used, and domestic top grade plate fitment market also starts large area using this kind of plate.
Currently, the Chinese patent that notification number is CN102555009B discloses a kind of high-strength environment-friendly shaving board, skill
Art programme element is: after making surface layer material and core layer material by the dry wood shavings of raw material wood and High-strength environmentally-friefuran adhesive, mated formation,
Hot pressing is made；Burst size of methanal≤0.24mg/L of the high-strength environment-friendly shaving board, environmental protection grade are high.
Above scheme existing defects: still largely used formaldehyde water-soluble in the preparation process of the High-strength environmentally-friefuran adhesive
Liquid influences the health of worker in process of production, also pollutes atmospheric environment as raw material.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of preparation of zero formaldehyde log particle board
Technique, wood shavings board finished product obtained have the advantages that zero content of formaldehyde, safe to use, environmentally protective and intensity be high and life
Production. art is easily achieved.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of 1. zero formaldehyde logs
The preparation process of grain plate, it is characterised in that production stage is:
(1) chip: log stacked, grabbed log by grapple after lorry to factory, be deposited into 5 meters of height, after chip
The slice of thickness about 10-30MM is made in processing；
(2) flaking: by slice planing at having a size of wood shavings particle；
(3) dry: wood shavings particle, which is dried to moisture content, using German Dieffenbacher single-pass formula roller drier SPE5*27M is
1.0-3.5%；
(4) it screens: the wood shavings particle after drying being divided into top layer raw material and core layer raw material, surface layer: 0.5-0.65mm sandwich layer:
1.0-1.1mm；
(5) glue mixing: PMDI ecology glue, aldehyde-free cement are mixed with two kinds of wood shavings particles；
(6) mat formation: obtained slab of mating formation；
(7) slab precompressed: is suppressed using continuous precompressed mode；
(8) hot pressing: slab is subjected to hot pressing using high temperature and obtains particieboard；
(9) post-processing: slab obtained is subjected to sanding processing after turnover panel, stacking health, then sawing obtains finished product
Grain plate, sorting storage.
By using above-mentioned technical proposal, zero formaldehyde addition log particle board is made using a kind of PMDI ecology glue.This
The characteristics of kind of ecological glue is that zero content of formaldehyde, thermosetting property are good and good with the rubber relay force of timber, in sizing workshop section addition PMDI ecology
Glue is mixed with wood shavings particle, then is added the high self-control aldehyde-free cement of tack and overcome the problems, such as plate blank molding, after hot pressing
Produce the super environmentally friendly log particle board of zero formaldehyde addition.
Preferably, the preparation step of self-control aldehyde-free cement is: sequentially adding water, polyvinyl alcohol, xanthan to reaction kettle
Glue and acrylate and vinyl acetate emulsion are heated to defined temperature stirring, starch are added after cooling and vegetable protein is again stirring for, adjusts pH
Value, blowing is sealed after stirring to be cooled；Required DBP, DOP are put into reaction kettle, are uniformly mixed, is then successively added again
Enter MDI glue, is heated to defined temperature stirring under nitrogen protection, blowing is sealed after cooling；Before use, by required
Component A and component B mixing obtains the good adhesive of the tack without formaldehyde.
By using above-mentioned technical proposal, makes aldehyde-free cement by oneself and overcome the problems, such as plate blank molding, wood shavings board finished product obtained
Intensity is high, and without using pollution of the formaldehyde as raw material, in reduction production process to atmospheric environment in preparation process.
Preferably, the component and weight percent of self-control aldehyde-free cement are as follows: component A80%, component B20%, wherein group
Dividing in A includes component and weight percent: polyvinyl alcohol 30%, xanthan gum 30%, acrylate and vinyl acetate emulsion 30%, starch 5% and plant egg
Component and mass percent are DBP40%, DOP40% and MDI20% in white 5%, component B.
Preferably, viscosity, isocyano-content, hydrolyzable chloride content, acidity, the density of PMDI ecology glue meet state
The technical standard requirement of family's standard.
In conclusion the invention has the following advantages:
First, its content of formaldehyde of wood shavings board finished product is zero, safe to use and intensity is high；
Second, production technology is environmentally protective and is easily achieved.
Detailed description of the invention
Fig. 1 is the production technological process of zero formaldehyde log particle board.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
1. a kind of preparation process of zero formaldehyde log particle board, it is characterised in that production stage is:
(1) chip: log stacked, grabbed log by grapple after lorry to factory, be deposited into 5 meters of height, after chip
The slice of thickness about 10-30MM is made in processing；
(5) flaking: by slice planing at having a size of wood shavings particle；
(6) dry: wood shavings particle, which is dried to moisture content, using German Dieffenbacher single-pass formula roller drier SPE5*27M is
1.0-3.5%；
(7) it screens: the wood shavings particle after drying being divided into top layer raw material and core layer raw material, surface layer: 0.5-0.65mm sandwich layer:
1.0-1.1mm；
(5) glue mixing: PMDI ecology glue, aldehyde-free cement are mixed with two kinds of wood shavings particles；
(6) mat formation: obtained slab of mating formation；
(7) slab precompressed: is suppressed using continuous precompressed mode；
(8) hot pressing: slab is subjected to hot pressing using high temperature and obtains particieboard；
(9) post-processing: slab obtained is subjected to sanding processing after turnover panel, stacking health, then sawing obtains finished product
Grain plate, sorting storage.
Aldehyde-free cement is using application No. is 201810218715.2 from preparing adhesive.
The log can be former brush wood, purchased wood chip, sawdust wood chaff, furniture waste material, and log density is generally in 500-
800kg/m3, moisture content: 40-65%.
In the step (2) size of wood shavings particle be length: 10~25mm, width: 4~10mmh, thickness: 0.2~
0.5mm。
Flaking is carried out using Germany Perlman ring flaker PZKP14-450 in the step (2).
Surface layer and sandwich layer screening are carried out using the screening installation with 1.35mm sieve pore in the step (4), are less than
1.35mm is surface layer, and being greater than is sandwich layer.
Described is exactly PMDI glue from Wan Hua company.
Surface layer applies 5-8 parts of aldehyde-free cement in the step (5), and sandwich layer does not add aldehyde-free cement, and surface layer adds
Add 3.0-3.5 parts of PMDI glue, sandwich layer adds 4.0-5.0 parts of PMDI glue.
Implement in room feed bin of mating formation in the step (6) middle berth, is smashed wood shavings by mating formation promoting roller, and with constant
Speed spread from wood shavings through two Fans carry out airflow pavement.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of preparation process of zero formaldehyde log particle board, it is characterised in that production stage is:
(1) chip: log stacked, grabbed log by grapple after lorry to factory, be deposited into 5 meters of height, after chip
The slice of thickness about 10-30MM is made in processing；
(2) flaking: by slice planing at having a size of wood shavings particle；
(3) dry: wood shavings particle, which is dried to moisture content, using German Dieffenbacher single-pass formula roller drier SPE5*27M is
1.0-3.5%；
(4) it screens: the wood shavings particle after drying being divided into top layer raw material and core layer raw material, surface layer: 0.5-0.65mm sandwich layer:
1.0-1.1mm；
(5) glue mixing: PMDI ecology glue, aldehyde-free cement are mixed with two kinds of wood shavings particles；
(6) mat formation: obtained slab of mating formation；
(7) slab precompressed: is suppressed using continuous precompressed mode；
(8) hot pressing: slab is subjected to hot pressing using high temperature and obtains particieboard；
(9) post-processing: slab obtained is subjected to sanding processing after turnover panel, stacking health, then sawing obtains finished product
Grain plate, sorting storage.
2. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: aldehyde-free cement is adopted
It is that application No. is 201810218715.2 from preparing adhesive.
3. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: the log can be
Former brush wood, purchased wood chip, sawdust wood chaff, furniture waste material, log density is generally in 500-800kg/m3, moisture content: 40-65%.
4. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: in the step (2)
The size of wood shavings particle is length: 10~25mm, width: 4~10mmh, thickness: 0.2~0.5mm.
5. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: in the step (2)
Flaking is carried out using German Perlman ring flaker PZKP14-450.
6. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: in the step (4)
Middle to carry out surface layer and sandwich layer screening using the screening installation with 1.35mm sieve pore, being less than 1.35mm is surface layer, and being greater than is sandwich layer.
7. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: described is exactly PMDI glue
Water derives from Wan Hua company.
8. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: in the step (5)
Middle surface layer applies 5-8 parts of aldehyde-free cement, and sandwich layer does not add aldehyde-free cement, and 3.0-3.5 parts of PMDI glue is added on surface layer,
Sandwich layer adds 4.0-5.0 parts of PMDI glue.
9. the preparation process of zero formaldehyde log particle board of one kind as described in claim 1, it is characterised in that: in the step (6)
Middle berth is implemented in room feed bin of mating formation, and is smashed wood shavings by mating formation promoting roller, and spread from wood shavings with constant speed through two
Blower carries out airflow pavement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737094.3A CN110480784A (en) | 2019-08-11 | 2019-08-11 | A kind of preparation process of zero formaldehyde log particle board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737094.3A CN110480784A (en) | 2019-08-11 | 2019-08-11 | A kind of preparation process of zero formaldehyde log particle board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110480784A true CN110480784A (en) | 2019-11-22 |
Family
ID=68550551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910737094.3A Pending CN110480784A (en) | 2019-08-11 | 2019-08-11 | A kind of preparation process of zero formaldehyde log particle board |
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| Country | Link |
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| CN (1) | CN110480784A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844323A (en) * | 2020-08-05 | 2020-10-30 | 陈乃峰 | Guqin and manufacturing process thereof |
| CN116604670A (en) * | 2023-05-22 | 2023-08-18 | 广东始兴县华洲木业有限公司 | Composite bamboo board and preparation method thereof |
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|---|---|---|---|---|
| EP0664738B1 (en) * | 1992-10-17 | 1996-06-05 | Achim MÖLLER | Plate-like or moulded derived timber product |
| CN101664952A (en) * | 2009-09-10 | 2010-03-10 | 浙江林学院 | Manufacturing method of bamboo-Chinese fir composite plate |
| CN108504320A (en) * | 2018-03-16 | 2018-09-07 | 广东始兴县华洲木业有限公司 | A kind of preparation method and applications of aldehyde-free cement |
| CN109129791A (en) * | 2018-09-27 | 2019-01-04 | 大亚木业（江苏）有限公司 | A kind of production technology of particleboard with zero-formaldehyde emission |
| CN109624016A (en) * | 2018-12-20 | 2019-04-16 | 广西丰林木业集团股份有限公司 | A kind of superpower particieboard manufacturing process changing shaving shape structure |
-
2019
- 2019-08-11 CN CN201910737094.3A patent/CN110480784A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0664738B1 (en) * | 1992-10-17 | 1996-06-05 | Achim MÖLLER | Plate-like or moulded derived timber product |
| CN101664952A (en) * | 2009-09-10 | 2010-03-10 | 浙江林学院 | Manufacturing method of bamboo-Chinese fir composite plate |
| CN108504320A (en) * | 2018-03-16 | 2018-09-07 | 广东始兴县华洲木业有限公司 | A kind of preparation method and applications of aldehyde-free cement |
| CN109129791A (en) * | 2018-09-27 | 2019-01-04 | 大亚木业（江苏）有限公司 | A kind of production technology of particleboard with zero-formaldehyde emission |
| CN109624016A (en) * | 2018-12-20 | 2019-04-16 | 广西丰林木业集团股份有限公司 | A kind of superpower particieboard manufacturing process changing shaving shape structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844323A (en) * | 2020-08-05 | 2020-10-30 | 陈乃峰 | Guqin and manufacturing process thereof |
| CN116604670A (en) * | 2023-05-22 | 2023-08-18 | 广东始兴县华洲木业有限公司 | Composite bamboo board and preparation method thereof |
| CN116604670B (en) * | 2023-05-22 | 2024-02-20 | 广东始兴县华洲木业有限公司 | Composite bamboo board and preparation method thereof |
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Application publication date: 20191122 |