CN1056330C - Medium-density fibreboard producing method and product - Google Patents
Medium-density fibreboard producing method and product Download PDFInfo
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- CN1056330C CN1056330C CN97100924A CN97100924A CN1056330C CN 1056330 C CN1056330 C CN 1056330C CN 97100924 A CN97100924 A CN 97100924A CN 97100924 A CN97100924 A CN 97100924A CN 1056330 C CN1056330 C CN 1056330C
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Abstract
The present invention relates to a producing method and products for medium-density fibreboards from shive (or corn stalks and roots and bean stalks) as principal raw material. The producing method successively comprises the working procedures of removing fluff, roots and dust (crushing and winnowing to remove skin, pith and dust for corn stalks and roots and bean stalks), steaming, fibre separation, glue spraying (adding wax for bean stalks), fibre drying, spreading, prepressing, hot-pressing, cooling, board turning, edge sawing, depositing, sanding, testing, grading, warehousing, etc. Production of one cubic meter of boards needs 1800 to 2500 kilograms of principal raw material, 110 to 140 kilograms of urea-formaldehyde glue and also 2.8 to 5.6 kilograms of wax for bean stalks. The present invention has the advantages of simple production method, low cost and broad raw material source (agricultural wastes) to relieve the deficiency of timber resources. The produced boards have performance indices better than those of the existing wooden or non-wooden boards.
Description
The present invention relates to manufacture method of fiberboard and products thereof, particularly a kind of is the product that primary raw material is made the method for medium density fibre board (MDF) and adopted this method to make with shive (or corn rhizome or beans bar).
In recent years, the production development of countries in the world particieboard is rapid, the U.S. produces 600 myriametres 3 per year, Japan, West Germany, states such as the Soviet Union also are doubled and redoubled, usually particieboard production accounts for 4% of wood-based plate output, especially West Europe accounts for 78%, but the minimizing gradually with human resource of improving constantly along with human industrialization degree, fewer and feweri as the forest tree resource of producing wood shavings, this has just proposed to produce the raw material sources problem of particieboard, because the forest reserves reduce gradually, raw material sources are restricted, cause cost to improve, people have developed and have adopted other raw material to substitute method and technology that wood shavings are produced various sheet materials for this reason, a kind of method of making sheet material with corn stalk is disclosed for Chinese patent CN87103594.A number in the recent period, though the sheet material of this method manufacturing is compared with particieboard, surface smoothness is good, MOR and plane tensile strength increase, but it still can not satisfy the fundamental characteristics as construction material fully: i.e. light weight, high strength and high rigidity, dimensional stability is good, corrosion resistant and anti-combustion, sound-insulating and heat-insulating, nontoxic etc.Its manufacturing cost is higher simultaneously, complex process.
The objective of the invention is: a kind of raw material wide material sources are provided, price is low, the method that adopts shive (or corn rhizome or beans bar) to come the wood shavings of replacing wood to produce medium density fibre board (MDF) for primary raw material promptly is provided, alleviate the timber resources deficiency, keep the ecological balance, keep environment, and by the medium density fibre board (MDF) manufacturing cost of this method manufacturing reduce significantly, manufacturing process is simple, various performance indications and surface quality are better than particieboard.
The present invention is achieved by following manner; A kind of manufacture method of medium density fibre board (MDF), it is characterized in that: the employing shive is a primary raw material, successively with remove suede, remove root, dust removal, boiling, fiber separation, spray glue, fiber drying, mat formation, precompressed, hot pressing, cooling turnover panel, saw limit are stacked, the sanding check grades warehouse-in etc., and operation is finished, making every cubic metre of fiberboard primary raw material shive is 1800～2200 kilograms, 110～140 kilograms of urea-formaldehyde glues, wherein:
A, to go the suede operation be earlier with the tooth of insert on the cylinder that rotates on the linter, adopt the way of combing, compartition to remove about 70% numb suede, then with fourth chi rake on the defibrator cylinder and the interference on the screen cloth adopt extruding, fall draw, the numb suede of the way removal 20% of the effect of combing and selection by winnowing;
B, to go the root operation be to remove snippings in the shive with air blast;
C, dust removal operation are to remove dust with 40 purpose vibratory sieves;
D, cooking process are that the ready shive material of C operation is carried out the boiling preheating, and the time is 3～5 minutes, and steam pressure is 0.65～0.70MPa;
E, fiber separation operation are will carry out fiber separation through the material of D operation with defibrator;
F, spray glue process are that the material of process E operation sprays glue, and its solid content is 50%, and viscosity is 25 ± 5 * 10pas, and pH value is 7.0～7.5, and be 90～120S (second) hardening time, and water-soluble 3～4 times, resin added is 10～14%;
G, fiber drying operation are to carry out drying with drying machine through the material behind the above-mentioned F operation spray glue, and baking temperature is 170～175 ℃, and dried material water ratio is 8～10%;
H, the operation of mating formation are to adopt airflow pavement machine or mechanical spreading machine to be layered on the plate blank conveyer through the dry good material of G operation;
I, prepressing procedures are that the material that will pave adopts the syllogic precompressed that it is pressed into the slab with certain intensity;
J, hot pressing process are that the slab after the precompressed is carried out hot pressing with hot press, and hot pressing temperature is 150～170 ℃, and unit pressure is 3.0～3.5MPa, and the time is 28～38s/mm;
K, cooling turnover panel operation are will cool off through the slab of hot pressing and turn over;
It is to saw the limit through the slab of K operation with sawing machine and to be deposited in together that operation is stacked on L, saw limit;
M, sanding inspection process are to carry out sanding with the slab that sander will be sawed the limit, then the check warehouse-in that grades.
The medium density fibre board (MDF) of Zhi Zaoing according to the method described above.
In addition, present technique can also adopt corn rhizome and beans bar as the main material production medium density fibre board (MDF).
When being main material production for corn rhizome and beans bar, aforesaid manufacture method is basic identical, just raw material is prepared different, be that cooking process is different before, and identical after the cooking process, successively with pulverize, selection by winnowing (peeling, medulla), dust removal, boiling, fiber separation, spray glue (should add cured), fiber drying to the beans bar, mat formation, precompressed, hot pressing, cooling turnover panel, saw limit are stacked, the sanding check grades warehouse-in etc., and operation is finished.For the corn rhizome is primary raw material, and it is 2100～2500 kilograms on corn rhizome of every cubic metre of plate that its raw material is prepared, urea-formaldehyde glue 110～140kg (solids content of glue is 50%).For the beans bar is primary raw material, and it is 1900～2200 kilograms every cubic metre that its raw material is prepared, and urea-formaldehyde glue is 110～140 kilograms, and cured consumption is 2.8～5.6 kilograms (accounting for 1～1.5%).
The present invention can add fire prevention (or claiming fire-retardant) agent and anticorrisive agent in the fiber separation treatment process, in addition, also can paste Decorative watch at its plate surface.
The medium density fibre board (MDF) of said method manufacturing has reached relative national standards through check.
The present invention compares with prior art, have following advantage: manufacture method is simple, various performance indications and surface quality are better than existing wooden and non-wood particleboard, low cost of manufacture, the raw material wide material sources all are agricultural wastes, have solved the problem of timber resources deficiency, keep the ecological balance, keep characteristics such as environment.
Further specify technical solution of the present invention below in conjunction with embodiment.
Embodiment:
A kind of manufacture method of medium density fibre board (MDF), it is characterized in that: the employing shive is a primary raw material, successively with remove suede, remove root, dust removal, boiling, fiber separation, spray glue, fiber drying, mat formation, precompressed, hot pressing, cooling turnover panel, saw limit are stacked, the sanding check grades warehouse-in etc., and operation is finished, making every cubic metre of fiberboard primary raw material shive is 1800～2200 kilograms, 110～140 kilograms of urea-formaldehyde glues, wherein:
A, to go the suede operation be earlier with the tooth of insert on the cylinder that rotates on the linter, adopt the way of combing, compartition to remove about 70% numb suede, then with fourth chi rake on the defibrator cylinder and the interference on the screen cloth adopt extruding, fall draw, the numb suede of the way removal 20% of the effect of combing and selection by winnowing;
B, to go the root operation be to remove snippings in the shive with air blast;
C, dust removal operation are to remove dust with 40 purpose vibratory sieves;
D, cooking process are that the ready shive material of C operation is carried out the boiling preheating, and the time is 3～5 minutes, and steam pressure is 0.65～0.70MPa;
E, fiber separation operation are will carry out fiber separation through the material of D operation with defibrator;
F, spray glue process are that the material of process E operation sprays glue, and its solid content is 50%, and viscosity is 25 ± 5 * 10pas, and pH value is 7.0～7.5, and be 90～120S (second) hardening time, and water-soluble 3～4 times, resin added is 10～14%;
G, fiber drying operation are to carry out drying with drying machine through the material behind the above-mentioned F operation spray glue, and baking temperature is 170～175 ℃, and dried material water ratio is 8～10%;
H, the operation of mating formation are to adopt airflow pavement machine or mechanical spreading machine to be layered on the plate blank conveyer through the dry good material of G operation;
I, prepressing procedures are that the material that will pave adopts the syllogic precompressed that it is pressed into the slab with certain intensity;
J, hot pressing process are that the slab after the precompressed is carried out hot pressing with hot press, and hot pressing temperature is 150～170 ℃, and unit pressure is 3.0～3.5MPa, and the time is 28～38s/mm;
K, cooling turnover panel operation are will cool off through the slab of hot pressing and turn over;
It is to saw the limit through the slab of K operation with sawing machine and to be deposited in together that operation is stacked on L, saw limit;
M, sanding inspection process are to carry out sanding with the slab that sander will be sawed the limit, then the check warehouse-in that grades.
The medium density fibre board (MDF) of Zhi Zaoing according to the method described above.
Embodiment 2 and embodiment 3
Present technique can also adopt corn rhizome and beans bar as the main material production medium density fibre board (MDF).
When being main material production for corn rhizome and beans bar, aforesaid manufacture method is basic identical, just raw material is prepared different, be that cooking process is different before, and identical after the cooking process, successively with pulverize, selection by winnowing (peeling, medulla), dust removal, boiling, fiber separation, spray glue (should add cured), fiber drying to the beans bar, mat formation, precompressed, hot pressing, cooling turnover panel, saw limit are stacked, the sanding check grades warehouse-in etc., and operation is finished.For the corn rhizome is primary raw material, and it is 2100～2500 kilograms on corn rhizome of every cubic metre of plate that its raw material is prepared, urea-formaldehyde glue 110～140kg (solids content of glue is 50%).For the beans bar is primary raw material, and it is 1900～2200 kilograms every cubic metre that its raw material is prepared, and urea-formaldehyde glue is 110～140 kilograms, and cured consumption is 2.8～5.6 kilograms (accounting for 1～1.5%).
The present invention can add fire prevention (or claiming fire-retardant) agent and anticorrisive agent in the fiber separation treatment process, in addition, also can paste Decorative watch at its plate surface.
The medium density fibre board (MDF) of said method manufacturing has reached relative national standards through check.
Claims (1)
1, a kind of manufacture method of medium density fibre board (MDF), it is characterized in that: the employing shive is a primary raw material, successively with remove suede, remove root, dust removal, boiling, fiber separation, spray glue, fiber drying, mat formation, precompressed, hot pressing, cooling turnover panel, saw limit are stacked, the sanding check grades, and the warehouse-in operation is finished, making every cubic metre of fiberboard primary raw material shive is 1800～2200 kilograms, 110～140 kilograms of urea-formaldehyde glues, wherein:
A, to go the suede operation be earlier with the tooth of insert on the cylinder that rotates on the linter, adopt the way of combing, compartition to remove about 70% numb suede, then with fourth chi rake on the defibrator cylinder and the interference on the screen cloth adopt extruding, fall draw, the numb suede of the way removal 20% of the effect of combing and selection by winnowing;
B, to go the root operation be to remove snippings in the shive with air blast;
C, dust removal operation are to remove dust with 40 purpose vibratory sieves;
D, cooking process are that the ready shive material of C operation is carried out the boiling preheating, and the time is 3～5 minutes, and steam pressure is 0.65～0.70MPa;
E, fiber separation operation are will carry out fiber separation through the material of D operation with defibrator;
F, spray glue process are that the material of process E operation sprays glue, and its solid content is 50%, and viscosity is 25 ± 5 * 10pas, and pH value is 7.0～7.5, and be 90～120S (second) hardening time, and water-soluble 3～4 times, resin added is 10～14%;
G, fiber drying operation are to carry out drying with drying machine through the material behind the above-mentioned F operation spray glue, and baking temperature is 170～175 ℃, and dried material water ratio is 8～10%;
H, the operation of mating formation are to adopt airflow pavement machine or mechanical spreading machine to be layered on the plate blank conveyer through the dry good material of G operation;
I, prepressing procedures are that the material that will pave adopts the syllogic precompressed that it is pressed into the slab with certain intensity;
J, hot pressing process are that the slab after the precompressed is carried out hot pressing with hot press, and hot pressing temperature is 150～170 ℃, and unit pressure is 3.0～3.5MPa, and the time is 28～38s/mm;
K, cooling turnover panel operation are will cool off through the slab of hot pressing and turn over;
It is to saw the limit through the slab of K operation with sawing machine and to be deposited in together that operation is stacked on L, saw limit;
M, sanding inspection process are to carry out sanding with the slab that sander will be sawed the limit, then the check warehouse-in that grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100924A CN1056330C (en) | 1997-03-03 | 1997-03-03 | Medium-density fibreboard producing method and product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100924A CN1056330C (en) | 1997-03-03 | 1997-03-03 | Medium-density fibreboard producing method and product |
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| Publication Number | Publication Date |
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| CN1160625A CN1160625A (en) | 1997-10-01 |
| CN1056330C true CN1056330C (en) | 2000-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN97100924A Expired - Fee Related CN1056330C (en) | 1997-03-03 | 1997-03-03 | Medium-density fibreboard producing method and product |
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Families Citing this family (16)
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|---|---|---|---|---|
| CN1073497C (en) * | 1999-05-05 | 2001-10-24 | 陆仁书 | Middle-density fibrous board made up of wheat or rice straws and aldehyde adhesive and its making mehtod |
| DE20112599U1 (en) * | 2001-08-01 | 2002-12-19 | Kronospan Tech Co Ltd | MDF board and manufacture |
| CN101298159B (en) * | 2008-06-17 | 2010-06-02 | 大亚科技股份有限公司 | Processing technique of medium density fiber plate suitable for routing board |
| CN101898381B (en) * | 2009-05-27 | 2012-08-08 | 浙江升华云峰新材股份有限公司 | Integrated board production process |
| CL2009001830A1 (en) * | 2009-09-09 | 2011-07-29 | Rootman Spa | Method of obtaining a pressed root plate comprising producing a reticular mattress, growing, cutting, draining, adding adhesive, pressing; and procedure to manufacture a panel. |
| CN102407553A (en) * | 2010-09-21 | 2012-04-11 | 大亚科技股份有限公司 | Manufacturing method of high density fiberboard for whitened type E1 grade floor substrate |
| CN102179857B (en) * | 2011-04-07 | 2013-02-13 | 云南工业大麻股份有限公司 | High-strength fiberboard and manufacturing method thereof |
| CN102218758B (en) * | 2011-04-07 | 2013-02-13 | 西南林业大学 | High-strength light plate material and manufacture method thereof |
| CN102672782B (en) * | 2012-04-28 | 2014-09-17 | 乔海平 | Method for preparing moxa board |
| CN103586957B (en) * | 2012-08-14 | 2016-01-20 | 李军 | A kind of diatomite manufactures the method for high density fiberboard |
| CN102922587B (en) * | 2012-10-15 | 2014-07-09 | 湖北中柏科技有限公司 | Method for manufacturing medium-density fiberboard in inorganic gluing |
| CN103015545A (en) * | 2012-12-10 | 2013-04-03 | 大连天佑保温材料有限公司 | Device for processing external wall insulation board by using waste glass wool and use method of device |
| CN104493944B (en) * | 2014-12-03 | 2016-09-07 | 潘传节 | A kind of P2 height tabula rasa processing method |
| CN104526832A (en) * | 2014-12-16 | 2015-04-22 | 上海振森木业机械有限公司 | Method for manufacturing high-density fiber board by crop straws |
| CN109138337A (en) * | 2018-08-01 | 2019-01-04 | 绍兴臣工新材料科技有限公司 | A kind of husk floor of natural environmental-protective |
| CN110154198A (en) * | 2019-05-13 | 2019-08-23 | 阜阳大可新材料股份有限公司 | A kind of production method of Ultrathin high density fiberboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041561A (en) * | 1988-09-07 | 1990-04-25 | 邹惟前 | The manufacture method of ply annual plant fibre board |
| CN1092009A (en) * | 1993-03-06 | 1994-09-14 | 贝勒及格雷滕比森制造厂公司 | The method and apparatus of working of stem of one-year-plant |
| CN1114927A (en) * | 1993-11-13 | 1996-01-17 | 黑龙江省拜泉人造板厂 | Compound flax leftover-shaving board and its manufacture method |
-
1997
- 1997-03-03 CN CN97100924A patent/CN1056330C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041561A (en) * | 1988-09-07 | 1990-04-25 | 邹惟前 | The manufacture method of ply annual plant fibre board |
| CN1092009A (en) * | 1993-03-06 | 1994-09-14 | 贝勒及格雷滕比森制造厂公司 | The method and apparatus of working of stem of one-year-plant |
| CN1114927A (en) * | 1993-11-13 | 1996-01-17 | 黑龙江省拜泉人造板厂 | Compound flax leftover-shaving board and its manufacture method |
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| Publication number | Publication date |
|---|---|
| CN1160625A (en) | 1997-10-01 |
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