CN102120333A - Method for manufacturing melamine board with low formaldehyde content - Google Patents
Method for manufacturing melamine board with low formaldehyde content Download PDFInfo
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- CN102120333A CN102120333A CN2010105954982A CN201010595498A CN102120333A CN 102120333 A CN102120333 A CN 102120333A CN 2010105954982 A CN2010105954982 A CN 2010105954982A CN 201010595498 A CN201010595498 A CN 201010595498A CN 102120333 A CN102120333 A CN 102120333A
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- melamine
- plate
- formaldehyde content
- preparation
- low formaldehyde
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Abstract
The invention relates to a method for manufacturing a plate, in particular to a method for manufacturing a melamine board with low formaldehyde content, which comprises the following steps of: preprocessing raw materials; applying glue; drying; laying; performing hot press; cooling; cutting edges; and sanding. The method is characterized in that: in the preprocessing process, wheat straw is subjected to hammer milling by a crusher, the wheat straw subjected to hammer milling is humidified and bubbled, and solution of melamine is added; and cotton stalks and wood chips are sliced and the solution of melamine is sprayed. By the method, the wheat straw, the cotton stalks and the wood chips are processed, the formaldehyde content in the plate is greatly reduced, the environment is protected, equipment investment is reduced, the energy consumption is reduced and the cost is saved.
Description
Technical field
The present invention relates to a kind of preparation method of sheet material, be specifically related to a kind of preparation method of low formaldehyde content melamine plate.
Background technology
At present commercially available sheet material mostly is the product that adopts common production method to obtain greatly, and its content of formaldehyde is higher, and generally all more than state specified standards 8mg/100g, finished product sheet material need ventilate and hang for a long time, and nonetheless, formaldehyde can not leave completely.If the content of formaldehyde in the sheet material is higher, bring serious injury can for the health of human body.In recent years, the person skilled in sheet material field is being studied the problem that how to reduce content of formaldehyde in the sheet material always, does not but search out suitable method.
In addition, various sheet materials aborning, normally adopting single wheat straw, straw, cotton stalk or wood chip is raw material, they is carried out technologies such as defibrator process, cooling, boiling, applying glue and processes.Wheat straw, straw need not boiling, need not defibrator process and cold grinding, directly through dedusting, screening, pulverizing, metering applying glue, mat formation, hot pressing, cut in length and breadth, turnover panel cooling, sanding processing, stacking, put these technologies in storage and can obtain finished product sheet material; If is raw material, then needs boiling, defibrator process, applying glue stick, mat formation, hot pressing with the cotton stalk; If with the wood chip is raw material, need its boiling, defibrator process, applying glue, its hot pressing curve are different from wheat straw and cotton stalk.That is to say that because above its characteristic difference of these several raw materials, so their processing technology all has nothing in common with each other, thus, if above these several raw materials are processed in same equipment, difficulty is bigger.Common sheet material is processed and is adopted different equipment and technology to process at different raw materials, and its shortcoming is that the kind of equipment is many, invest greatly, and the energy consumption that the unlatching multiple devices bring is also very high.
In order to reduce the content of formaldehyde in the sheet material, make sheet material environmental protection more, drop to minimum to the injury of human body it, in addition, also wheat straw, cotton stalk or wood chip are processed, reduced the corresponding apparatus input, reduce the energy consumption of bringing by plurality of devices in order to be implemented in the equipment of the same race, therefore need that design is a kind of to reduce content of formaldehyde in the sheet material to greatest extent, and can in same equipment, realize wheat straw, straw, cotton stalk and wood chip method for processing.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides and a kind ofly can effectively reduce content of formaldehyde melamine board manufacturing method in the melamine plate, adopt this method to greatly reduce the content of formaldehyde in the melamine plate, realized that also wheat straw, cotton stalk and wood chip are processed into the melamine plate in same equipment.
The preparation method of low formaldehyde content melamine plate of the present invention, realize by following technical scheme:
Low formaldehyde content melamine plate and preparation method thereof, comprise the raw material pre-treatment, add glue, drying, mat formation, hot pressing, cooling, cutting edge and sanding step, in the pre-treatment process, wheat straw is hammered into shape broken with pulverizer, can adopt beater grinder, broken owing to only hammering into shape to wheat straw, need not section, therefore select for use beater grinder can reach the effect that material is thoroughly pulverized, to hammering the macerating of material humidification after broken into shape, add melamine solution in the material after macerating of humidification again; For cotton stalk and wood chip, then need, and then spray melamine solution its first slicing treatment; More than in wheat straw, cotton stalk, wood chip, add melamine solution concentration be 8%～12%, preferred concentration is 10%, adding the time that melamine solution keeps is 1～10h.
The addition of melamine solution be material heavy 8%～12%, preferred addition is 10% of a weight of material, when the addition of melamine surpasses above scope, can cause waste; If the addition of melamine is than above scope hour, its effect of removing formaldehyde is bad, and it is minimum that the content of formaldehyde is dropped to, because of the melamine solution of the above-mentioned content range of a little selections.
In adding the glue process, add melamine modified urea-formaldehyde glue, its addition is 150～190kg/m
3Plate, preferably 170kg/m
3Plate.
Concrete steps of the present invention are:
A. with pulverizer wheat straw is pulverized, then macerating of humidification; With cotton stalk, wood chip section;
B. add melamine solution in the wheat straw after macerating of humidification, on the cotton stalk after the section, wood chip, spray melamine solution, more than the concentration of said melamine solution be 8%～12%, preferably 10%, its addition be material heavy 8%～12%, preferably 10%, adding the time that keeps after the melamine solution is 1～10h;
C. the wheat straw after melamine solution is handled among the step b is added glue, among the step b through melamine solution handle the back cotton stalk, wood chip adds glue after passing through defibrator process again, more than added glue be melamine modified urea-formaldehyde glue, its addition is 150～190kg/m
3, 170kg/m preferably
3;
D. to add fibrous material dries behind the glue, mat formation, hot pressing, cooling, cutting edge, sanding.
Beneficial effect of the present invention is, added melamine solution man-hour in raw material material is handled owing to add, and greatly reduces the content of formaldehyde in the sheet material; Broken to the wheat straw hammer with beater grinder to wheat straw in addition, macerating of humidification can spread out fiber wherein, to cotton stalk, wood chip section, above several raw material can be processed in equipment of the same race.Therefore, produce the melamine plate, not only greatly reduce the content of formaldehyde in the sheet material, protected environment, also reduced the input amount of equipment, reduced energy consumption, saved cost by the technology that the present invention adopts.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is done further explanation, so that those skilled in the art more understands the present invention.
Embodiment 1
A. wheat straw is hammered into shape broken with beater grinder;
B. to hammering macerating of the wheat straw humidification processing after broken into shape, till soaking fully to wheat straw fiber, and then add concentration be melamine solution, its addition of 8% be material heavy 8%, the time of maintenance is 5h;
D. the material after will handling through step c adds glue, and added glue is melamine modified urea-formaldehyde glue, and its addition is 190kg/m
3;
E. to add sheet material drying behind the glue, mat formation, hot pressing, cooling, cutting edge, sanding.
Recording content of formaldehyde is 1.2 mg/100g, is lower than state specified standards 8mg/100g.
Embodiment 2
A. with slicer cotton stalk is cut into slices;
B. add concentration in the cotton stalk after section and be 10% melamine solution, its addition be material heavy 10%, the time of maintenance is 8h;
C. the material defibrator process after will handling through step b, add glue, added glue is melamine modified urea-formaldehyde glue, and its addition is 170kg/m
3;
D. to add cotton stalk fiber drying behind the glue, mat formation, hot pressing, cooling, cutting edge, sanding.
Content of formaldehyde is 1.8 mg/100g, is lower than state specified standards 8mg/100g.
Embodiment 3
A. with slicer wood chip is cut into slices;
B. add concentration in the wood chip after section and be 12% melamine solution, its addition be material heavy 12%, the time of maintenance is 10h;
C. the wood chip defibrator process after will handling through step b, add glue, added glue is melamine modified urea-formaldehyde glue, and its addition is 150kg/m
3;
D. to add sheet material drying behind the glue, mat formation, hot pressing, cooling, cutting edge, sanding.
Content of formaldehyde is 1.5 mg/100g, is lower than state specified standards 8mg/100g.
Claims (10)
1. the preparation method of a low formaldehyde content melamine plate, comprise the raw material pre-treatment, add glue, drying, mat formation, hot pressing, cooling, cutting edge and sanding step, it is characterized in that, in described pre-treatment process, hammer wheat straw into shape broken back macerating of humidification, add melamine solution in the material after macerating of humidification with pulverizer; To spraying melamine solution again after cotton stalk, the wood chip section.
2. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 1 is characterized in that, described pulverizer is a beater grinder.
3. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 1 is characterized in that, the concentration of described melamine solution is 8%～12%.
4. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 3 is characterized in that, the concentration of described melamine solution is 10%.
5. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 1 is characterized in that, the addition of described melamine solution is 8%～12% of a weight of material.
6. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 5 is characterized in that, the addition of described melamine solution is 10% of a weight of material.
7. as the preparation method of each described a kind of low formaldehyde content melamine plate in the claim 1 to 6, it is characterized in that the time that described adding melamine solution keeps is 1～10h.
8. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 1 is characterized in that, described adding in the glue process, adds melamine modified urea-formaldehyde glue.
9. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 8 is characterized in that, the addition of described melamine modified urea-formaldehyde glue is 150～190kg/m
3Plate.
10. the preparation method of a kind of low formaldehyde content melamine plate as claimed in claim 8 is characterized in that, the addition of described melamine modified urea-formaldehyde glue is 170kg/m
3Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010595498.2A CN102120333B (en) | 2010-12-20 | 2010-12-20 | Method for manufacturing melamine board with low formaldehyde content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010595498.2A CN102120333B (en) | 2010-12-20 | 2010-12-20 | Method for manufacturing melamine board with low formaldehyde content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102120333A true CN102120333A (en) | 2011-07-13 |
| CN102120333B CN102120333B (en) | 2014-01-22 |
Family
ID=44249047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010595498.2A Expired - Fee Related CN102120333B (en) | 2010-12-20 | 2010-12-20 | Method for manufacturing melamine board with low formaldehyde content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102120333B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115801A (en) * | 2017-12-21 | 2018-06-05 | 贺州宝兴新材料有限公司 | A kind of preparation method of low formaldehyde melamine plate |
| CN108115804A (en) * | 2017-12-21 | 2018-06-05 | 贺州宝兴新材料有限公司 | A kind of production method of new melamine plate |
| CN110666918A (en) * | 2019-10-16 | 2020-01-10 | 哈尔滨理工大学 | Process method for manufacturing artificial wood board by using camellia oleifera shells |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215362A (en) * | 1996-04-12 | 1999-04-28 | 马利特有限公司 | Method for production of lignocellulosic composite materials |
| CN1512931A (en) * | 2001-04-03 | 2004-07-14 | �������о�ίԱ�ṫ˾ | Methods of straw fiber processing |
| CN101426624A (en) * | 2006-03-13 | 2009-05-06 | 艾伯塔研究委员会公司 | Using lipid to improve lignocellulosic fibre bonding and dimensional performance |
| CN101791817A (en) * | 2010-02-05 | 2010-08-04 | 浙江省林业科学研究院 | Production method of environmental-friendly type low-cost middle and high density fiber board |
-
2010
- 2010-12-20 CN CN201010595498.2A patent/CN102120333B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215362A (en) * | 1996-04-12 | 1999-04-28 | 马利特有限公司 | Method for production of lignocellulosic composite materials |
| CN1512931A (en) * | 2001-04-03 | 2004-07-14 | �������о�ίԱ�ṫ˾ | Methods of straw fiber processing |
| CN101426624A (en) * | 2006-03-13 | 2009-05-06 | 艾伯塔研究委员会公司 | Using lipid to improve lignocellulosic fibre bonding and dimensional performance |
| CN101791817A (en) * | 2010-02-05 | 2010-08-04 | 浙江省林业科学研究院 | Production method of environmental-friendly type low-cost middle and high density fiber board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115801A (en) * | 2017-12-21 | 2018-06-05 | 贺州宝兴新材料有限公司 | A kind of preparation method of low formaldehyde melamine plate |
| CN108115804A (en) * | 2017-12-21 | 2018-06-05 | 贺州宝兴新材料有限公司 | A kind of production method of new melamine plate |
| CN110666918A (en) * | 2019-10-16 | 2020-01-10 | 哈尔滨理工大学 | Process method for manufacturing artificial wood board by using camellia oleifera shells |
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| Publication number | Publication date |
|---|---|
| CN102120333B (en) | 2014-01-22 |
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