CN102198681A - Method for preparing environment-friendly laminated wood board - Google Patents
Method for preparing environment-friendly laminated wood board Download PDFInfo
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- CN102198681A CN102198681A CN2011101179867A CN201110117986A CN102198681A CN 102198681 A CN102198681 A CN 102198681A CN 2011101179867 A CN2011101179867 A CN 2011101179867A CN 201110117986 A CN201110117986 A CN 201110117986A CN 102198681 A CN102198681 A CN 102198681A
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Abstract
The invention discloses a method for preparing an environment-friendly laminated wood board. The method comprises the following steps of: 1, preparing core strips; 2, preparing a wood core board by adopting the core strips; 3, assembling a veneer and the wood core board; 4, pressing the obtained assembly by using adhesive, wherein the adopted adhesive is biological glue, and the adopted process is a one-time pressing molding process; and 5, trimming and sanding to obtain a board finished product. The biological glue is used as the adhesive, and the biological glue is an environment-friendly substance, so the problem of formaldehyde emission is not caused, and the environmental pollution problem of furniture due to the use of urea resin adhesive is radically solved. Moreover, the outer layer of the board is sealed, so that the formaldehyde emission caused by other reasons is further reduced. By the method, the formaldehyde release amount of the board is greatly reduced, the indoor pollution is reduced, and an environment-friendly living space is provided.
Description
Technical field
The present invention relates to a kind of core-board of building materials technology field, specifically, that relate to is a kind of preparation method of environment friendly lumbercore plywood.
Background technology
Core-board is commonly called as central layer, is a kind of glued board with solid wood plate core, is widely used in making bearing and ornament furnishings such as desk, bed, cabinet, kitchen furniture, door and window cover, heating installation cover.Along with the continuous intensification of house ornamentation heat, the consumption and the sales volume of core-board constantly increase.The quality of core-board and burst size of methanal are the focuses that people pay close attention to.Formaldehyde pollutes the good new home that makes many finishings allows people's " hear and step back ", and how to reduce that formaldehyde in the sheet material pollutes is a difficult problem in the process always.
Detailed catalogue worker's plate of numerous domestic is still using Lauxite as main adhesive at present, because the superiority of this adhesive maximum is an abundant raw materials, functional, cheap, but Lauxite is subjected to the restriction of synthesis technique, improve prescription in any case, chemical reaction can not be very complete, and still there is the unnecessary formaldehyde problem that has neither part nor lot in reaction that discharges in product in manufacturing and use.Synthesis technique falls behind, and the formaldehyde gas of then emitting is many; Synthesis technique is advanced, and formaldehyde gas is just less, is difficult to control, can not eradicate.It is extremely important for reducing indoor pollution to select the low detailed catalogue worker's plate of burst size of methanal.
Country has also formulated some standards for the problems such as environmental pollution of furniture, some economic relatively advanced areas and the bigger enterprise of scale also attach great importance to the problem of formaldehyde emissions at present, they adopt various measures to reduce the release of formaldehyde, and main way has following several: the one, and the prescription and the reaction process condition of change Lauxite; The 2nd, in the core-board production process, apply and can reduce the additive that formaldehyde discharges; The 3rd, core-board is carried out post-processed; The 4th, the core-board exposed surface is carried out encapsulation process.Should, there is not technical difficulty in the measure that above-mentioned reduction formaldehyde discharges, but no matter adopts what technology, and its result must cause the increase of production cost, and burst size of methanal is low more, and the increase of production cost is also many more.
Chinese invention patent: the production technology of environment friendly lumbercore plywood, application number: 200510043606.4 applyings date: 2005.5.20, this patent provides a kind of production technology of environment friendly lumbercore plywood: formed by adhesive hot pressing by central layer, middle plate and dash board, it is characterized in that the weight of described adhesive consists of: virgin rubber: flour: wood powder: bentonite: curing agent=1: 0.05～0.15: 0.05～0.1: 0.05～0.1: 0.001～0.005.Major technique characteristics of the present invention are by improving adhesive, in original urea-formaldehyde resin adhesive that contains formaldehyde, add the assistant that can reduce free formaldehyde, reduce the burst size of free formaldehyde in the urine aldehyde glue, reduce the mol ratio of urea PARA FORMALDEHYDE PRILLS(91,95), the burst size of methanal of urine aldehyde glue is obviously descended, thereby reduce the harm of free formaldehyde to human body "; though this patent can reduce burst size of methanal to a certain extent; essentially; still can't resolve the problem of the formaldehyde emissions that brings because adopt urea-formaldehyde resin adhesive, so still there is problem of environmental pollution.
Summary of the invention
The objective of the invention is to solve above-mentioned deficiency of the prior art, a kind of preparation method of environment friendly lumbercore plywood is provided, making it can fundamentally overcome the problem of the formaldehyde emissions that brings because of adopting urea-formaldehyde resin adhesive, is a kind of construction material of environmental protection.
For realizing above-mentioned purpose, the preparation method of environment friendly lumbercore plywood of the present invention comprises the steps:
The first step, preparation core bar;
In second step, adopt the core bar to prepare block board;
In the 3rd step, veneer and block board are carried out assembly;
The 4th step, the assembly that obtains is carried out glue laminated, the adhesive of employing is a biological glue, the technology of employing is a compression moulding technology;
The 5th step, the saw limit, sanding obtains the sheet material finished product.
Further, described central layer uses the preparation of core bar glue jointer.
Further, the outer laminating melamine wetted surface paper of sheet material, and then can fully formaldehyde be closed in the sheet material, play the effect of very environmental protection.
Further, described biological glue is the biological adhesive with environment protection significance, and compression moulding technology is paddle core and panel, backboard to be formed together directly enter press behind the base and suppress.
In the prior art, the preparation core-board is most of to adopt urea-formaldehyde resin adhesive, but Lauxite is subjected to the restriction of synthesis technique, improves prescription in any case, all can exist to discharge the unnecessary formaldehyde problem that has neither part nor lot in reaction, has brought very serious environmental pollution problem.
Adopt biological glue as adhesive among the present invention, because biological glue is a kind of environmental protection material, thus can not cause the problem of formaldehyde emissions, thus the problem of environmental pollution that brings furniture because use adhesive fundamentally solved.And the present invention also carries out encapsulation process at the skin of sheet material, further reduces the formaldehyde emissions that other reasons brings.The present invention greatly reduces the burst size of methanal of sheet material, has reduced indoor pollution, and the living space of an environmental protection is provided.
The specific embodiment
The technical solution of the present invention is further explained below in conjunction with embodiment, but following content is not intended to limit the scope of the invention, and protection scope of the present invention is as the criterion with claims.
Embodiment 1
Present embodiment provides a kind of preparation method of environment friendly lumbercore plywood, comprises the steps:
The first step, preparation core bar;
The core bar accounts for the core-board volume more than 60%, with the quality of core-board much relations is arranged.Making the seeds of core bar preferably adopts material softer, wood structure evenly, distortion is little, contract with dry rate is little, and timber is tangential and less seeds of contract with dry rate difference radially, easily processing, the size of core bar, shape are more accurate, then production board face planarization is good, sheet material is not yielding, and weight is lighter, helps using.General core bar moisture content 8%--12%, northern air drying can be 6%--12%, and the southern area air humidity is big, but must not surpass 15%.
Core bar thickness: the thickness of block board adds the allowance of plate face planing when making block board.
Core bar width: the width of central layer is generally 1.5 times of thickness, had better not surpass 2 times, and the core-board core bar width that some quality requirements are very high can not be wide more greater than 20mm core bar, and when moisture content changed, the distortion of core bar was just big more.
Core bar length: the core bar is long more, and the buckling strength of core-board is high more, yet the core bar is long more, and timber utilization rate is low more.
The processing of central layer: use core bar glue jointer.
In second step, adopt the core bar to prepare block board;
In the 3rd step, veneer and block board are carried out assembly;
The 4th step, the assembly that obtains is carried out glue laminated, the adhesive of employing is a biological glue; Paddle core and panel, backboard formed together directly enter press behind the base and suppress;
The 5th step, the saw limit, sanding obtains the sheet material finished product.
After the block board splicing, the coarse injustice of plate face adopts thicknesser processing usually, and the machine that core bar machining accuracy is very high is pieced together block board, can process with sanding to replace scraping.
Embodiment 2
Present embodiment provides a kind of preparation method of environment friendly lumbercore plywood, comprises the steps:
The first step, preparation core bar;
In second step, adopt the core bar to prepare block board;
In the 3rd step, veneer and block board are carried out assembly;
The 4th step, the assembly that obtains is carried out glue laminated, the adhesive of employing is a biological glue;
The 5th step, the saw limit, sanding obtains the sheet material finished product.
The 6th step, the outer laminating melamine wetted surface paper of sheet material, and then can fully formaldehyde be closed in the sheet material, play the effect of very environmental protection.
Except step 6, other enforcement is identical with embodiment in the present embodiment.
Adopt biological glue as adhesive among the present invention, because biological glue is a kind of environmental protection material, thus can not cause the problem of formaldehyde emissions, thus the problem of environmental pollution that brings furniture because use adhesive fundamentally solved.And the present invention also carries out encapsulation process at the skin of sheet material, further reduces the formaldehyde emissions that other reasons brings.The present invention greatly reduces the burst size of methanal of sheet material, has reduced indoor pollution, and the living space of an environmental protection is provided.
The above only is part preferred embodiment of the present invention, is not that technical scope of the present invention is done any restriction, and the present invention also goes for the preparation of other building boards.All any modifications of making within the spirit and principles in the present invention are equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the preparation method of an environment friendly lumbercore plywood is characterized in that comprising the steps:
The first step, preparation core bar;
In second step, adopt the core bar to prepare block board;
In the 3rd step, veneer and block board are carried out assembly;
The 4th step, the assembly that obtains is carried out glue laminated, the adhesive of employing is a biological glue, the technology of employing is a compression moulding technology;
The 5th step, the saw limit, sanding obtains the sheet material finished product.
2. the preparation method of environment friendly lumbercore plywood according to claim 1 is characterized in that: the preparation of described central layer use core bar glue jointer.
3. the preparation method of environment friendly lumbercore plywood according to claim 1 is characterized in that: the outer laminating melamine wetted surface paper of described sheet material, and then can fully formaldehyde be closed in the sheet material.
4. the preparation method of environment friendly lumbercore plywood according to claim 1 is characterized in that: a described compression moulding technology is paddle core and panel, backboard to be formed together directly enter press behind the base and suppress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101179867A CN102198681A (en) | 2011-05-09 | 2011-05-09 | Method for preparing environment-friendly laminated wood board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101179867A CN102198681A (en) | 2011-05-09 | 2011-05-09 | Method for preparing environment-friendly laminated wood board |
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| Publication Number | Publication Date |
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| CN102198681A true CN102198681A (en) | 2011-09-28 |
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| CN2011101179867A Pending CN102198681A (en) | 2011-05-09 | 2011-05-09 | Method for preparing environment-friendly laminated wood board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493942A (en) * | 2013-12-11 | 2015-04-08 | 融安华海木业有限公司 | Production method of eucalyptus wooden door substrate |
| CN105365003A (en) * | 2015-11-13 | 2016-03-02 | 合肥市科天化工有限公司 | Manufacturing technology for water-based zero-formaldehyde blockboard |
| CN108818784A (en) * | 2018-07-21 | 2018-11-16 | 王迅 | A kind of soybean protein base is without aldehyde Furniture panel |
-
2011
- 2011-05-09 CN CN2011101179867A patent/CN102198681A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493942A (en) * | 2013-12-11 | 2015-04-08 | 融安华海木业有限公司 | Production method of eucalyptus wooden door substrate |
| CN105365003A (en) * | 2015-11-13 | 2016-03-02 | 合肥市科天化工有限公司 | Manufacturing technology for water-based zero-formaldehyde blockboard |
| CN108818784A (en) * | 2018-07-21 | 2018-11-16 | 王迅 | A kind of soybean protein base is without aldehyde Furniture panel |
| CN108818784B (en) * | 2018-07-21 | 2020-06-19 | 广州帝威办公家具有限公司 | Soybean protein-based formaldehyde-free furniture board |
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Application publication date: 20110928 |