CN1227154A - Method for producing wheat straw flakeboard - Google Patents
Method for producing wheat straw flakeboard Download PDFInfo
- Publication number
- CN1227154A CN1227154A CN 99114027 CN99114027A CN1227154A CN 1227154 A CN1227154 A CN 1227154A CN 99114027 CN99114027 CN 99114027 CN 99114027 A CN99114027 A CN 99114027A CN 1227154 A CN1227154 A CN 1227154A
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- Prior art keywords
- wheat straw
- flakeboard
- hot pressing
- machine
- glue
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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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- Dry Formation Of Fiberboard And The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The wheat straw flakeboard is produced by using isocyanic ester glue as adhesive, and has improved mechanical performance and thus wide application. The production process includes the steps of material preparation, shredding wheat straw into flakes in shredding machine, drying the flakes to water content of 3-5% in rotor type or channel type drying machine, applying isocyanic ester glue in annular or cylindrical glue mixing machine, spreading of board blank with gradually changed structure blank in airflow spreading machine, hot pressing and post-treatment.
Description
The invention belongs to non-wooden material's class, specifically a kind of method for producing wheat straw flakeboard.
At present, interpolation inorganic chemical industry material was made various sheet materials again after people usually were processed into wheat straw particle.The said products generally can not substitute wood fibre board and wooden flake board and use.Wheat straw is compared with wood material, and there is a kind of waxy substance on the surface, adopts urea-formaldehyde resin commonly used and two kinds of tackiness agent of resol to be difficult to gummed.
The objective of the invention is to avoid above-mentioned weak point of the prior art, is the method that tackiness agent is made wheat straw flakeboard with the isocyanate glue and provide a kind of, to improve the physical and mechanical property of product, enlarges the purposes of product.
Purpose of the present invention can reach by following measure:
Get the raw materials ready: get and give birth to wheat straw then, neat as far as possible bundled colligation, root can not contain earth, and raw material will rationally be stored, and it is rotten to prevent to make moist; Pulverize: with special pulverizer, wheat straw is processed into the particle that length is no more than 10mm, also should contains in the total amount and be no less than 30% particulate state fines; Dry: will wetting with rotor-type drying machine or channel-type drying machine, to be dried to water ratio be 3～5% to the wheat straw particle; Applying glue: with the isocyanic ester is tackiness agent, and glue consumption is 6～8%, and applying glue equipment can be used ring type glue mixer or drum-type glue mixer; Mat formation: with the air-flowing type spreading machine wheat straw particle is mated formation into the grading structure slab, the top layer is a fines, and sandwich layer is a coarse fodder; Hot pressing: 160～180 ℃ of hot pressing temperatures, unit pressure are 3.0～3.5Mpa, and hot pressing time is 0.5～0.6min/mm thickness of slab, with the thickness of thickness piece control product.For preventing haftplatte, adopt the tetrafluoroethylene backing plate; Aftertreatment: comprise cooling, cutting edge and sanding operation.
The present invention has following advantage compared to existing technology:
1. the employing isocyanate adhesive can make sheet material obtain the ideal adhesion effect, has better waterproof;
2. after common wooden Flakeboard Product Line being carried out necessary transformation, just can produce wheat straw flakeboard;
3. the production cost of wheat straw flakeboard descends to some extent than wooden flake board and medium density fibre board (MDF).
Embodiment:
Get and give birth to wheat straw then, water ratio is 15%, be processed into particle with hog, wherein, the top layer is no less than 30% with fines content, reduce to 4% with the rotor-type drying machine wheat straw particle water ratio that will wet, add 7% isocyanate adhesive, with the applying glue of ring type glue mixer, by the air-flowing type spreading machine wheat straw particle is mated formation into slab, in thermocompressor, slab is compressed to 10mm, hot pressing temperature is 170 ℃, unit pressure is 3.5Mpa, and hot pressing time is 5min, and the sheet material after the hot pressing obtains the finished product through cooling, cutting edge and sanding.After measured, wheat straw flakeboard physical and mechanical property (seeing Table 1) reaches the requirement of wheat straw board standard (ANSIA208.1) regulation of American National Standard Institute's promulgation.
Table 1
| Performance | Unit | Test result |
| Density water ratio MOR Young's modulus internal bond strength thickness swelling rate | ????g/cm 3????％ ????Mpa ????Mpa ????MPa ????％ | ????0.65 ????8 ????25.0 ????3.0×10 3????0.35 ????6 |
In order to improve the surface quality of wheat straw flakeboard, can carry out veneer with veneer or melamine impregnated paper.
Wheat straw flakeboard can substitute products such as shaving board and medium density fibre board (MDF) in sector applications such as building construction, upholstery and furniture manufacturings.
Claims (3)
1. method for producing wheat straw flakeboard, comprise get the raw materials ready, shred, drying, applying glue, mat formation, hot pressing and postprocessing working procedures, it is characterized in that wheat straw being processed into particle with knife mill, reduce to 3～5% with rotor-type drying machine or the channel-type drying machine wheat straw particle water ratio that will wet, with the isocyanic ester is tackiness agent, with ring type glue mixer or the applying glue of drum-type glue mixer, mat formation into the grading structure slab with the air-flowing type spreading machine, make wheat straw flakeboard through hot pressing and aftertreatment.
2. method for producing wheat straw flakeboard according to claim 1 is characterized in that the consumption 6～8% of its isocyanate adhesive.
3. wheat straw flakeboard manufacture method according to claim 1 is characterized in that adopting the tetrafluoroethylene backing plate in hot pressing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114027A CN1091019C (en) | 1999-01-22 | 1999-01-22 | Method for producing wheat straw flakeboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114027A CN1091019C (en) | 1999-01-22 | 1999-01-22 | Method for producing wheat straw flakeboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1227154A true CN1227154A (en) | 1999-09-01 |
| CN1091019C CN1091019C (en) | 2002-09-18 |
Family
ID=5277158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99114027A Expired - Fee Related CN1091019C (en) | 1999-01-22 | 1999-01-22 | Method for producing wheat straw flakeboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1091019C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344426C (en) * | 2002-07-09 | 2007-10-24 | 戴文龙 | Method for making surface layer material having preconcerted density and equipment thereof |
| CN102501290A (en) * | 2011-09-29 | 2012-06-20 | 新平美坚新型竹材有限公司 | Method for preparing environmental-friendly tile from plants |
| CN103770190A (en) * | 2012-10-22 | 2014-05-07 | 长沙创远环保科技有限公司 | Method for manufacturing plates through wheat straw |
| CN105643759A (en) * | 2016-01-04 | 2016-06-08 | 万华生态板业股份有限公司 | Size-graded particleboard and manufacturing method thereof |
| CN105773784A (en) * | 2016-04-29 | 2016-07-20 | 安徽农业大学 | Thin type moisture-proof medium-density fiberboard and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364736C (en) * | 2005-06-20 | 2008-01-30 | 南京林业大学 | Industralized production and manufacture method for rice straw hollow flakeboard |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057226A (en) * | 1990-06-11 | 1991-12-25 | 云南农业大学 | Weed shaving board |
| MY135306A (en) * | 1997-02-21 | 2008-03-31 | Mitsui Chemicals Inc | Preparation processes of an adhesive for lignocellulose and a lignocellulose pressed board |
-
1999
- 1999-01-22 CN CN99114027A patent/CN1091019C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344426C (en) * | 2002-07-09 | 2007-10-24 | 戴文龙 | Method for making surface layer material having preconcerted density and equipment thereof |
| CN102501290A (en) * | 2011-09-29 | 2012-06-20 | 新平美坚新型竹材有限公司 | Method for preparing environmental-friendly tile from plants |
| CN103770190A (en) * | 2012-10-22 | 2014-05-07 | 长沙创远环保科技有限公司 | Method for manufacturing plates through wheat straw |
| CN105643759A (en) * | 2016-01-04 | 2016-06-08 | 万华生态板业股份有限公司 | Size-graded particleboard and manufacturing method thereof |
| CN105773784A (en) * | 2016-04-29 | 2016-07-20 | 安徽农业大学 | Thin type moisture-proof medium-density fiberboard and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091019C (en) | 2002-09-18 |
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