CN1054566C - Method for making integrally formed wood board using melamine resin - Google Patents
Method for making integrally formed wood board using melamine resin Download PDFInfo
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- CN1054566C CN1054566C CN96103362A CN96103362A CN1054566C CN 1054566 C CN1054566 C CN 1054566C CN 96103362 A CN96103362 A CN 96103362A CN 96103362 A CN96103362 A CN 96103362A CN 1054566 C CN1054566 C CN 1054566C
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- melmac
- melamine resin
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Abstract
The present invention relates to a method for manufacturing integrally formed wood board using melamine resin. A melamine resin sheet is directly stuck on wood in a die, wood dust is used as a raw material and is injected into a lower die of the die on an oil press, and a dried wood chip soaked with the melamine resin is arranged above the lower die. The thermoset melamine resin adhesive is hardened via pressurization at a high temperature of more than 130 DEG C, the oil press is demoulded, and semi-products are hooked by a special hook nail in an upper die. After the lower die is cleaned, a pre-manufactured melamine resin sheet and two thin wood chips which are soaked by the melamine resin adhesive and are dried are arranged in the lower die, and the wood of the present invention is manufactured after hot pressing at 80 to 100 DEG C for 5 to 10 minutes and demoulding.
Description
The present invention relates to a kind of method of making integrally formed wood board using melamine resin.Or rather, the present invention relates to a kind of is diaphragm with the melmac, can directly be used in furniture, family's decorations purposes to make, and omit the method for the one-body molded molded timber plate of melmac of complicated post-processing step commonly used.
The raw material one of furniture is to mainly being timber, but in recent years because scientific and technological progress, and the shortage gradually of wood raw material, more since environmental consciousness strengthen, so many alternative materials appearance, for example fiberboard, three-ply board, particieboard etc. are arranged.But taking a broad view of the preparation method of these materials, all is to make flat board earlier, again through cutting, step such as moulding just is accomplished, consuming time beyond doubt, expense material and taking a lot of work.For reducing manufacturing cost, advanced countries such as U.S., moral, then will need a large amount of products of producing and using, mfg. moulding die injects the former material of making fiberboard wherein, just like the process of making fiberboard, make it molded and shaped, make the finished product that will produce, yet, even so, these substitute products all have following shortcoming:
(1) wood grain of shortage log, must further process again, the applying wood chip, so that product shows the outward appearance of wood grain, but even so, all can't make the complete applying of wood chip at some engraving, lines, arc chord angle and periphery place,, also need expend the machine of a large amount of manpowers or use high precision even can reach desired effect reluctantly;
(2) product water proofing properties such as fiberboard, three-ply board, particieboard are all not good, and product is all not long service life;
(3) all products are after overmolding, no matter whether fitted the wood chip or the scraps of paper, all need pass through the application step, just can make it have graceful outward appearance, yet spent cost, the manpower of furniture application is surprising especially, desired quality is high more, required application step is many more, and for example present five-star polyester application promptly needs through three to four road priming paint coateds, per pass priming paint all needs sanding once, goes up colored paint and finish paint at last again.Even so, the highest 3H that also only reaches of the hardness of lacquer itself, and can't really protect furniture surface to make it avoid being subjected to scratch, waterproof infiltration and destruction furniture;
(4) general melamine board (melmac plate) is to utilize the melmac coated on the scraps of paper that are printed on institute's desire demonstration wood grain, again under high pressure, action of high temperature, with one or two heavy kraft paper moulding, and form the thick flat board that reaches 0.8 to 1.0 millimeter.Commercially available melamine board need pass through on the plate that cuts through cutting to fit in, if engraving, radian are arranged, then can't fit on the plate.General melamine board is for asking its flatness, so only coated very thin-one deck, its dried film thickness approximately has only 0.01 millimeter, though its water proofing property, hardness are very high, can't reach as application and has a transparent thickness (thickness that comprises priming paint, colored paint, finish paint).Therefore, still need a kind of method, so that can produce a kind of log wood grain that has, need not further to process the applying wood chip, can make product show the outward appearance of wood grain, and overcome some engraving, lines, arc chord angle and periphery place all can't make the shortcoming of the complete applying of wood chip, and need not to expend a large amount of manpowers or use the machine of high precision to finish, and overcome fiberboard, three-ply board, the water proofing property of products such as particieboard is not good, the shortcoming that life-span is not long, need not to pass through again the application step, can have graceful outward appearance, thereby save a large amount of manpowers and cost, more can replace the melamine board or the fiberboard of present use, three-ply board, particieboard, and water proofing property, hardness is higher, and can have a transparent thickness, make its aesthetic property more be better than the product that uses melamine board made at present.
Therefore; an object of the present invention is to provide a kind of method of making integrally formed wood board using melamine resin; so that can produce a kind of is diaphragm and directly be used in furniture, family decorations purposes with the melmac, and omits the integrated molded timber plate of melmac of complicated post-processing step commonly used.
Another object of the present invention, provide a kind of method of making integrally formed wood board using melamine resin, so that can produce a kind of have log wood grain or color and luster, need not further to process the applying wood chip, can make product show the outward appearance of wood grain or required color and luster, and overcome some engraving, lines, arc chord angle and the periphery place all can't make shortcomings such as the complete applying of wood chip, and the integrated molded timber plate of melmac that need not to expend a large amount of manpowers or use the machine of high precision promptly to can be made into.
Another object of the present invention, provide a kind of method of making integrally formed wood board using melamine resin, so that can produce a kind of shortcoming that water proofing property is not good, the life-span is not long that overcomes products such as fiberboard, three-ply board, particieboard, and need not to pass through again the application step, promptly have graceful outward appearance, and thereby save the integrated molded timber plate of melmac of a large amount of manpowers and cost.
Another purpose of the present invention, provide a kind of method of making integrally formed wood board using melamine resin, so that can produce a kind of melamine board that replaces present use or fiberboard, three-ply board, particieboard, and water proofing property, hardness are higher, and can have a transparent thickness, make its aesthetic property more be better than the integrated molded timber plate of melmac of the melamine board that uses at present or fiberboard, three-ply board, the made product of particieboard.
The various shortcomings that the present invention can overcome on the prior art to be run into, and complicated originally procedure of processing is greatly simplified, and make the hurried reduction of cost.
Method of the present invention is directly in mould; melmac is fitted on the timber; and make integrated melmac timber plate; its mode is with wood raw material; with 25 centimetres of about amounts of 1.3 kilograms of per 30 cm x, 30 cm x; injection places the counterdie of the mould on the hydraulic press; and an impregnation melamine resin adehsive and through the wood chip of super-dry is placed by the side thereon; under the temperature more than 130 ℃ the pressurization and heated 5 to 10 minutes; this time is to decide according to the area of the product of wanting and thickness; so that this thermosetting melamine resin adehsive sclerosis; with the hydraulic press demoulding; semi-finished product are hooked by the special hook nail in the patrix; behind the cleaning counterdie; in wherein placing the ready-made melmac thin slice of a slice and two-layer this melamine resin adehsive of impregnation and through the veneer of super-dry; hot pressing is 5 to 10 minutes under the temperature between 80 to 100 ℃; the demoulding then; or cooling is cooled to the back demoulding below 50 ℃ on same or another hydraulic press, and obtains to have the product of melmac protection.
Present widely used melamine board, advantage with high water proofing property and high rigidity, but it is three polyamino resins to be coated on be printed on institute's desire demonstration wood grain, on the scraps of paper of color or pattern, again in high pressure, under the action of high temperature, with one or two heavy kraft paper moulding, and form the thick flat board that reaches 0.8 to 1.0 millimeter, when using, need to have transshipped on the plate of cutting through cutting to fit in, on the plate if engraving arranged, radian, then can't fit, and melamine board is for asking its flatness, so only apply the melmac film of about 0.01 millimeters thick of very thin one deck, though so its water proofing property, hardness is very high, has a transparent thickness but still can't reach as application.
Method of the present invention is directly in mould, makes melamine fitted on the timber by resin, and makes integrated melmac timber plate, and the method may further comprise the steps:
(1) with wood raw material with 2.5 centimetres of about amounts of 1.3 kilograms of per 30 cm x, 30 cm x, inject the counterdie place the mould on the hydraulic press, and an impregnation melamine resin adehsive and through the wood chip of super-dry is placed by the side thereon;
(2) pressurization and heating 5 to 10 minutes under the temperature more than 130 ℃, this time is to decide according to the area of the product of wanting and thickness, so that this thermosetting melamine resin adehsive hardens;
(3) make the hydraulic press demoulding, semi-finished product are hooked by the special hook nail in the patrix, behind the cleaning counterdie, in wherein placing the ready-made melmac thin slice of a slice and two-layer this melamine resin adehsive of impregnation and through the veneer of super-dry, hot pressing is 5 to 10 minutes under the temperature between 80 to 100 ℃;
(4) demoulding then, or cooling is cooled to the back demoulding below 50 ℃ on same or another hydraulic press, and obtain to have the product of melmac protection.
Employed in the methods of the invention wood chip is about 3 millimeters or the less little wood chip of smashing and obtaining through sieving with beating crusher, and optionally carries out drying, makes its moisture content be lower than 16%, and it is that the wood raw material required with making particieboard is identical; Perhaps, in an alternative, can use the waste material or the wood particle of plywood (three-ply board), smash with beating crusher again and obtain about 3 millimeters or less little wood chip, and optionally carry out drying, make its moisture content be lower than 16% through sieving; Perhaps, in another alternative, can use the mixture of little wood chip, plywood waste material or wood particle, smash with beating crusher again and obtain about 3 millimeters or less little wood chip, and optionally carry out drying, make its moisture content be lower than 16% through sieving.
Employed in the methods of the invention melamine resin adehsive, system is made up of formalin, urea, melamine and ammoniacal liquor, under 80 ℃, these compositions are mixed according to the ratio of 70 weight % formalin, 6 weight % ammoniacal liquor, 16 weight % urea, 8 weight % melamines, and be modulated into the melamine resin adehsive that impregnation is used.
With desire on product, to show wood chip, cloth sheet, the scraps of paper of wood grain or pattern, contain be dipped in this melamine resin adehsive after, take out dryly, if wood chip need be painted, then in jelly, add colorant, to obtain required color and luster.
In the method for the invention, wood chip is mixed stirring 15 minutes with jelly, make it even.The main reason of using melamine resin adehsive in the methods of the invention is the water proofing property that is that it is superior, because at present fiberboard, the employed urea glue of plywood water proofing property are relatively poor.
Employed ready-made melmac thin slice in step (3), be be dissolved in water or this technology a kind of melmac in the solvent commonly used after, formed solution is coated on the paper stock, be absorbed and after drying handles at solution, form and have the melmac dried film thickness and be at least 0.1 millimeter melmac thin slice.Wherein paper stock is 10 to 16 pounds a cotton paper.This melmac can be identical or different with employed melmac in the aforementioned melamine resin adehsive, can be in a liquid state, solid-state or powdery, for example is commercially available CASCOMELMF-600
In the method for making of integrally formed wood board using melamine resin of the present invention, adopt 30kg/cm with temperature controller
2To 35kg/cm
2Hydraulic press, wherein employed mould is according to the desired form manufacturing.
Because employed temperature is more than 130 ℃ in the step (2), so step (3) can obtain a collection of semi-finished product, can make operation together again after its cooling, to increase production efficiency.After step (3) is finished, but direct demold, or if need then cooling cooling on the another one hydraulic press, or the just demoulding after cooling is cooled to below 50 ℃ on original hydraulic press that uses.
It should be noted that in the method for the invention the purpose of step (4) is to guarantee the flatness of product, so as not to after the demoulding because of expanding with heat and contract with cold, and the melmac reaction is not exclusively, and causes the negative effect of product distortion.The last module system of mould has hook nail through design, attaches to patrix with the semi-finished product of guaranteeing step (2) after the demoulding, in order to the enforcement of the demoulding and step (3).The mode of heating of mould can carry out with usual way, for example electrothermal tube or steam.After product is finished, can be optionally again through the polishing waxing, to meet the need of market.
The invention has the advantages that the product that can obtain with the melmac protection, owing to had through the wood chip of applying or the wood grain or the pattern of the scraps of paper on the finished product, and can optionally paint, so the furniture that can have been finished or family's decorations product.Secondly, owing to use dried film thickness to be at least 0.1 millimeter melmac thin slice, thus can reach effect as the timber products of polyester institute application, and hardness and water proofing property are higher.And commercially available melamine board need pass through on the plate that cuts through cutting to fit in, if engraving, radian are arranged, then can't fit on the plate.General melamine board is for asking its flatness, so only apply the melmac film of about 0.01 millimeters thick of very thin one deck, though its water proofing property, hardness are very high, have a transparent thickness but can't reach as application, yet integrally formed wood board using melamine resin of the present invention there are not these shortcomings.
According to the made integrally formed wood board using melamine resin of the inventive method, can be used in and include, but is not limited to family's decorations, furniture product, products such as desktop, chair plate, the chair back, door-plate, engraving door-plate, sound rack, toilet lid, hat rack base for example, its scope is also unrestricted, as long as the product of the energy demoulding all can use.
Following embodiment in order to the explanation but not limit the scope of the invention.
Embodiment
Make 2.5 centimetres of 60 cm x, 90 cm x
The desktop with radian, its chamfering is 60 °
Preliminary step:
The waste wood of each timber factory is picked up from collection, if the timber that wood chip itself is crossed by undried still produces, then needs earlier through heated-air drying, make its moisture content be lower than 16%.Above-mentioned wood chip also can use the waste material or the wood particle of plywood.This wood raw material is smashed with beating crusher, and through the filter of 3 mm sieve mesh screens, and obtain desired little wood chip.
The melamine resin adehsive that the preparation impregnation is used is by 70 weight % formalin, 6 weight % amine water, 16 weight % urea, 8 weight % melamines, forms 80 ℃ of following hybrid modulation.With desire on goods, to show the wood chip of wood grain or pattern, contain be immersed in this melamine resin adehsive after, take out and to dry in the shade or with heated-air drying
In resin glue, add colorant in case of necessity, to obtain required color and luster.
With 10: 1 weight ratio, wood chip is mixed stirring 15 minutes with this impregnation with resin glue, make it even.
Two kilograms of CASCOMEL MF-600 melmacs are mixed with 1 kg of water, are deployed into melmac solution, make 10 pounds to 16 pounds the cotton paper impregnation wherein, and make its drying, and obtain the about 0.25 millimeter melamine thin slice of integral thickness.
Manufacture process:
1. prepare following raw material:
(1) 7.8 kilogram wood chip and resin compound;
(2) wood chip a slice of the back side desire use of desktop, 0.3 centimetre of 66 cm x, 96 cm x;
Two of the wood chips that (3) 2 * 3 table-top surface desires are used, 0.3 centimetre of 66 cm x, 96 cm x;
Melmac thin slice a slice that (4) 66 cm x are 96 centimetres.
2. (1) is injected the counterdie of mould, and covered the wood chip of (2) thereon, at 160 ℃ temperature and 30kg/cm
2Pressure under, pressurize and heat the demoulding after 8 minutes, and the cleaning counterdie.
3. (4) are placed (3) counterdie then, behind mold closing, make the semi-finished product of itself and step 2, together at 90 ℃ and 30kg/cm
2Temperature and down heating 8 minutes of pressure.
4. make the back demoulding below the mould temperature drop to 50 ℃, take out product of the present invention.
5. polish this product with 40 horsepowers automatic polishing wax-polishing machine.
Under the same terms,, see below subordinate list with the product comparison of product of the present invention and polyester application, polyurethane (PU) application and melamine board.
Subordinate list
Annotate: 1. decide on product quality
| Product of the present invention | The polyester application | The PU application | Melamine board | |
| Case hardness | 3H | 3H | 2H | 1H to 3H1 |
| Glossiness 2 | Good | Good | Poor slightly | Difference |
| External form | One-body molded, can be considered the moulding of monoblock log | 1. with MDF 3Manufacture, can find out fits for wood chip forms 2. and forms with the manufacturing of log jigsaw | Identical with the polyester application | Fit in the MDF/ three-ply board, then edge exposure need process in addition |
2. after polishing
3.MDF: medium density fiber
Though the present invention is in above describing in detail and utilizing specific embodiment to be illustrated, but what should understand is that the technical staff of the industry can do various changes and correction to its form and details not departing under scope of the present invention and the spirit, and these change with revise all may be within the scope of the present invention.
Claims (10)
1, a kind ofly melmac be fitted on the timber and make the method for integrated melmac timber plate, it is characterized in that the method may further comprise the steps:
(1), with per 30 * 30 * 2.5 cubic centimetres of about amounts of 1.3 kilograms, inject the counterdie place the mould on the hydraulic press, and a wood chip of impregnation melamine resin adehsive and drying is placed by the side thereon with wood raw material;
(2) pressurization and heating 5 to 10 minutes under the temperature more than 130 ℃, this time decides according to the area of the product of wanting and thickness, so that this thermosetting melamine resin adehsive hardens;
(3) make the hydraulic press demoulding, semi-finished product are hooked by the special hook nail in the patrix, behind the cleaning counterdie, in the veneer of wherein placing the ready-made melmac thin slice of a slice and two-layer this melamine resin adehsive of impregnation and drying, hot pressing is 5 to 10 minutes under the temperature between 80 to 100 ℃;
(4) demoulding then, or cooling is cooled to the back demoulding below 50 ℃ on same or another hydraulic press, and obtain to have the product of melmac protection.
2, method according to claim 1 is characterized in that this wood chip is for smashing through beating crusher and having about 3 millimeters or less little wood chip through sieving.
3, method according to claim 2 it is characterized in that this wood chip through super-dry, and moisture content is lower than 16%.
4, method according to claim 2 is characterized in that this wood chip is selected from and comprises little wood chip, wood particle, plywood waste material and composition thereof, smashes with beating crusher and obtains about 3 millimeters or less little wood chip.
5, method according to claim 4 it is characterized in that this wood chip through super-dry, and moisture content is lower than 16%.
6, method according to claim 1, it is characterized in that this melamine resin adehsive, formed by formalin, urea, melmac and ammoniacal liquor, under 80 ℃, these compositions are mixed according to the ratio of 70 weight % Formalins, 6 weight % amine water, 16 weight % urea, 8 weight % melmacs, and be modulated into the melamine resin adehsive that impregnation is used.
7, method according to claim 6 is characterized in that wood chip, cloth sheet, the scraps of paper that will desire to show wood grain or pattern on goods, contains to be dipped in this melamine resin adehsive, takes out dry then.
8, method according to claim 6 is characterized in that adding colorant in this melamine resin adehsive, so that this wood chip is painted and obtained required color and luster.
9, method according to claim 1, it is characterized in that obtain to have the melmac diaphragm product have and do thick melmac film at least 0.1 millimeter.
10, method according to claim 1, it is characterized in that employed ready-made this melmac thin slice in the step (3), be by after being dissolved in a kind of melmac in water or the common solvent, with formed solution coated on paper stock, be absorbed and after drying handles at solution, form and have the melmac dried film thickness and be at least 0.1 millimeter melmac thin slice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103362A CN1054566C (en) | 1996-04-02 | 1996-04-02 | Method for making integrally formed wood board using melamine resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103362A CN1054566C (en) | 1996-04-02 | 1996-04-02 | Method for making integrally formed wood board using melamine resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1161269A CN1161269A (en) | 1997-10-08 |
| CN1054566C true CN1054566C (en) | 2000-07-19 |
Family
ID=5118020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96103362A Expired - Fee Related CN1054566C (en) | 1996-04-02 | 1996-04-02 | Method for making integrally formed wood board using melamine resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1054566C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385384A (en) * | 2014-11-21 | 2015-03-04 | 重庆星星套装门（集团）有限责任公司 | Melamine synchronous wood grain decorative surface precasting process and hot press |
| CN104827544B (en) * | 2015-01-30 | 2017-05-17 | 董彬 | Preparation method of aldehyde-free and poison-free fireproof artificial board |
| CN104924410B (en) * | 2015-05-11 | 2017-04-05 | 广德县新杭镇聚源新型材料压膜厂 | A kind of deodorizing toilet cover and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056834A (en) * | 1990-05-24 | 1991-12-11 | 上海木材工业研究所 | Diversity-type simulating ebony and manufacture method thereof |
| CN1063070A (en) * | 1991-12-18 | 1992-07-29 | 李立敏 | Pine laminated bending wood and manufacture method thereof |
| CN2156900Y (en) * | 1993-05-19 | 1994-02-23 | 北京林业大学 | Durable goal bat |
| CN1108593A (en) * | 1994-02-07 | 1995-09-20 | 李成宗 | Method for hardening and processing wood into product |
-
1996
- 1996-04-02 CN CN96103362A patent/CN1054566C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056834A (en) * | 1990-05-24 | 1991-12-11 | 上海木材工业研究所 | Diversity-type simulating ebony and manufacture method thereof |
| CN1063070A (en) * | 1991-12-18 | 1992-07-29 | 李立敏 | Pine laminated bending wood and manufacture method thereof |
| CN2156900Y (en) * | 1993-05-19 | 1994-02-23 | 北京林业大学 | Durable goal bat |
| CN1108593A (en) * | 1994-02-07 | 1995-09-20 | 李成宗 | Method for hardening and processing wood into product |
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| Publication number | Publication date |
|---|---|
| CN1161269A (en) | 1997-10-08 |
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