CN112157746B - Process for pressing melamine impregnated paper veneer on surface of inorganic board - Google Patents
Process for pressing melamine impregnated paper veneer on surface of inorganic board Download PDFInfo
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- CN112157746B CN112157746B CN202011040007.8A CN202011040007A CN112157746B CN 112157746 B CN112157746 B CN 112157746B CN 202011040007 A CN202011040007 A CN 202011040007A CN 112157746 B CN112157746 B CN 112157746B
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- inorganic board
- impregnated paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
The invention discloses a process for pressing and pasting a melamine impregnated paper veneer on the surface of an inorganic board, which comprises the following steps: (1) sanding and dedusting the inorganic board, and adjusting the water content to obtain a pretreated inorganic board; (2) superposing the pretreated inorganic plate and the polymer adhesive film to obtain a blank A; (3) then, superposing the polymer adhesive film and the melamine impregnated paper to obtain a blank B; (4) superposing the assembly B on the assembly A to obtain a pre-pressing plate, and then carrying out hot pressing treatment to obtain the composite material; in the step (2) and the step (3), the main component of the polymer adhesive film is PE or PE graft copolymer. The facing process of the invention does not need to press twice, reduces the physical damage of the inorganic board, the damage of the first heating pressing is twice lower than that of the second heating pressing, and the inorganic board can achieve A-level fire prevention by adopting the first pressing.
Description
Technical Field
The invention relates to the technical field of plate facing processes, in particular to a process for pressing and pasting melamine impregnated paper facing on the surface of an inorganic plate.
Background
The melamine board is called melamine impregnated bond paper facing artificial board for short. Paper with different colors or textures is soaked in melamine resin adhesive, then dried to a certain curing degree, and paved on the surfaces of shaving boards, damp-proof boards, medium-density fiberboards, plywood, core boards, multi-layer boards or other hard fiberboard, and then hot pressed to form the decorative board. Can freely imitate various patterns, and has the advantages of scratch resistance, wear resistance, good heat resistance, corrosion resistance, pollution resistance and the like.
The traditional melamine board is produced by gluing the surface of a board, then paving non-woven fabric or kraft paper with melamine impregnated paper pressed on the surface of an inorganic board, assembling, and then putting the inorganic board into a hot press for heating, pressurizing and laminating. However, the gluing process of the process adopts melamine glue, the performance of the melamine glue becomes weaker along with the increase of the storage time, the board surface and the side surface of the board are easily polluted during gluing, the painting thickness and the density are easily uneven during painting, the yield is influenced, and the process is complex.
Disclosure of Invention
The invention aims to provide a process for pressing and pasting a melamine impregnated paper veneer on the surface of an inorganic board, which can save complex processes in the production process, improve the production efficiency and simultaneously improve the surface bonding strength of the inorganic board.
In order to achieve the purpose, the invention adopts the following technical scheme:
a process for pressing melamine impregnated paper on the surface of an inorganic board to form a veneer comprises the following steps:
(1) sanding and dedusting the inorganic board, and adjusting the water content to obtain a pretreated inorganic board;
(2) superposing the pretreated inorganic plate and the polymer adhesive film to obtain a blank A;
(3) then, superposing the polymer adhesive film and the melamine impregnated paper to obtain a blank B;
(4) superposing the assembly B on the assembly A to obtain a pre-pressing plate, and performing hot pressing treatment to obtain the finished product; in the step (2) and the step (3), the component of the polymer adhesive film is PE or PE graft copolymer.
The invention has precise requirement on the breadth specification of the polymer adhesive film, the specification and the size are required to be consistent with those of the inorganic board, if the polymer adhesive film is larger than the specification of the inorganic board, the adhesive film can damage the steel board after hot pressing and melting, and if the polymer adhesive film is smaller than the specification of the inorganic board, the melamine impregnated paper can not be completely adhered to the surface of the inorganic board.
The PE graft copolymer has no acute toxicity, no sensitization infection, no slow toxicity and long-term toxicity, does not contain additives or compounds such as lead, mercury, cadmium, chromium and the like, does not contain asbestos, oxyfluoride and halide, is not a water pollutant, and does not cause harm to the environment and health; stable performance, stable and chemically inert at normal temperature, and can be stored for a long time without influencing the service performance.
Preferably, the PE graft copolymer is polyethylene graft-modified with maleic anhydride.
Preferably, in the step (2) and the step (3), the upper layer and the lower layer of the polymer adhesive film are both provided with release protective film layers, and the middle layer is provided with a polymer self-adhesive layer. The release protective film layer is bonded with the polymer self-adhesive layer together, so that different protective layers can be uncovered during use, the protective layers are bonded with a polymer waterproof sheet or a building waterproof structure layer, a waterproof effect is achieved, and the strength and the tearing strength of an inorganic board are improved.
More preferably, the main components of the polymeric self-adhesive layer are polyurethane, polyolefin elastomer and ethylene-vinyl acetate copolymer.
Preferably, the polymer adhesive film is recovered by the following method: and (3) placing the polymer adhesive film in a granulator for granulation to obtain the plastic.
Preferably, in the step (1), the sanding belt used for sanding is 180-200 meshes, and the sanding speed is 45-50 m/min.
Preferably, in the step (1), the water content of the inorganic board is adjusted to 5 to 8%.
Preferably, in step (4), the working method of the hot-pressing press comprises: adopts a hot pressing method with high temperature, short period and long period at low temperature.
Preferably, in the step (4), the temperature of the hot pressing treatment is 150 ℃ to 160 ℃.
Preferably, in the step (4), the pressure of the hot pressing treatment is 12-14 MPa.
Preferably, in the step (4), the time of the hot pressing treatment is 30-40s per sheet.
The pressing time is too short, so that glue on the melamine impregnated paper cannot flow and solidify in time, and the polymer adhesive film cannot be completely melted, so that the finally pressed inorganic board and the melamine impregnated paper cannot be completely combined or foamed, and dry flowers or white spots can be formed on the surface of the veneer. Therefore, the time for heating and pressurizing in examples 1 to 3 of the present invention was 25 to 40 seconds.
Preferably, in the step (4), the hot pressing treatment is carried out under the conditions that the ambient temperature is 20-35 ℃ and the humidity is 40-70%.
Preferably, in step (4), edge deletion is further included after the hot pressing.
The invention also provides the application of the facing process in an inorganic board.
Has the advantages that:
1. the inorganic plate does not need to be pressed twice, the physical damage of the inorganic plate is reduced, the damage of the primary heating pressing is twice lower than that of the secondary heating pressing, and the inorganic plate adopting the primary pressing can achieve A-level fire prevention.
2. The inorganic board coating machine has the advantages that glue does not need to be coated on the surface of an inorganic board, the coating thickness and density are not uniform, the yield is improved, the production efficiency is improved, the labor cost is reduced, the process times are saved, meanwhile, the inorganic board coating machine is wear-resistant and non-deformable, and the inorganic board coating machine is simple in structure, easy to manufacture, low in cost and free of formaldehyde release.
3. The polymer adhesive film used in the invention has strong bonding capability, and can firmly bond the melamine impregnated paper and the inorganic board.
Detailed Description
The present invention will be explained in more detail with reference to examples. The practice of the present invention is not limited to the following examples, and any modification or variation of the present invention is within the scope of the present invention.
Example 1
The process for pressing and pasting the melamine impregnated paper veneer on the surface of the inorganic board comprises the following steps:
(1) sanding an inorganic plate by 180 meshes to smooth, cleaning surface dust, and controlling the water content of the inorganic plate to be 5%;
(2) cutting the polymer adhesive film into a size consistent with the specification of the inorganic board, and overlapping the inorganic board and the polymer adhesive film with the smooth surface of the polymer adhesive film facing upwards to obtain a blank A;
(3) superposing the polymer adhesive film and melamine impregnated paper, and enabling the polymer adhesive film to face downwards to obtain a component B;
(4) and (3) overlapping the assembly B on the assembly A to form a prepressing plate, putting the assembled prepressing plate into a hot press for heating and pressurizing at the temperature of 150 ℃ and the pressure of 12Mpa for 40 seconds, taking out the plate by using a sucker conveyer belt after hot pressing is finished, and cleaning redundant melamine impregnated paper on the periphery to obtain a finished product.
Example 2
The process for pressing and pasting the melamine impregnated paper veneer on the surface of the inorganic board comprises the following steps:
(1) sanding an inorganic plate by 180 meshes to smooth, cleaning surface dust, and controlling the water content of the inorganic plate to be 5%;
(2) cutting the polymer adhesive film into a size consistent with the specification of the inorganic board, overlapping the inorganic board and the polymer adhesive film, and enabling the smooth surface of the polymer adhesive film to face upwards to obtain a blank A;
(3) superposing a polymer adhesive film and melamine impregnated paper, wherein the smooth surface of the polymer adhesive film faces downwards, and assembling a blank B;
(4) and (3) overlapping the assembly B on the assembly A to form a prepressing plate, putting the assembled prepressing plate into a hot press for heating and pressurizing at the temperature of 160 ℃, the pressure of 14Mpa for 30 seconds, taking out the plate by using a sucker conveyer belt after the hot pressing is finished, and cleaning redundant melamine impregnated paper on the periphery to obtain a finished product.
Example 3
The process for pressing and pasting the melamine impregnated paper veneer on the surface of the inorganic board comprises the following steps:
(1) sanding an inorganic plate by 180 meshes to smooth, cleaning surface dust, and controlling the water content of the inorganic plate to be 5%;
(2) cutting the polymer adhesive film into a size consistent with the specification of the inorganic board, and overlapping the inorganic board and the polymer adhesive film with the smooth surface of the polymer adhesive film facing upwards to obtain a blank A;
(3) superposing the polymer adhesive film and melamine impregnated paper, and enabling the polymer adhesive film to face downwards to obtain a component B;
(4) and (3) overlapping the assembly B on the assembly A to form a prepressing plate, putting the assembled prepressing plate into a hot press for heating and pressurizing at the temperature of 150 ℃ and the pressure of 12Mpa for 25 seconds, taking out the plate by using a sucker conveyer belt after hot pressing is finished, and cleaning redundant melamine impregnated paper on the periphery to obtain a finished product.
The pressing time is too short, so that glue on the melamine impregnated paper cannot flow and solidify in time, and the polymer adhesive film cannot be completely melted, so that the finally pressed inorganic board and the melamine impregnated paper cannot be completely combined or foamed, and dry flowers or white spots can be formed on the surface of the veneer. Therefore, the time for heating and pressurizing in examples 1 to 3 of the present invention was 25 to 40 seconds.
Comparative example 1
The traditional process for pressing and pasting the melamine impregnated paper veneer on the surface of the inorganic board comprises the following steps:
(1) sanding an inorganic plate by 180 meshes to smooth, cleaning surface dust, and controlling the water content of the inorganic plate to be 5%;
(2) after the surface A of the inorganic board is coated with melamine glue, the melamine impregnated paper is laid flatly;
(3) sending the inorganic board on which the melamine impregnated paper is spread into a hot press for pressing and molding;
(4) turning over the inorganic board pressed on the surface A to enable the surface B to face upwards, and cleaning;
(5) after the surface B of the inorganic board is coated with melamine glue, the melamine impregnated paper is laid flatly;
(6) and (3) sending the inorganic board on which the melamine impregnated paper is spread into a hot press for pressing and forming.
Comparative example 2
The process for pressing and pasting the melamine impregnated paper veneer on the surface of the inorganic board comprises the following steps:
(1) sanding an inorganic plate by 180 meshes to smooth, cleaning surface dust, and controlling the water content of the inorganic plate to be 5%;
(2) cutting the polymer adhesive film into a size consistent with the specification of the inorganic board, and overlapping the inorganic board and the polymer adhesive film with the smooth surface of the polymer adhesive film facing upwards to obtain a blank A;
(3) taking melamine impregnated bond paper as a blank B;
(4) and (3) overlapping the assembly B on the assembly A to form a prepressing plate, putting the assembled prepressing plate into a hot press for heating and pressurizing at the temperature of 150 ℃ and the pressure of 12Mpa for 40 seconds, taking out the plate by using a sucker conveyer belt after the hot pressing is finished, and cleaning redundant melamine impregnated bond paper around to obtain a finished product.
The sheets obtained in example 1, example 2 and comparative example were subjected to performance tests, respectively, and the test results are shown in table 1:
TABLE 1
While the present invention has been described in detail with reference to the preferred embodiments thereof, the principles and embodiments of the present invention are described herein using specific examples, which are provided to assist in understanding the method and its core concepts, including the best mode, and to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The scope of the invention is defined by the claims and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (9)
1. A facing process for pressing melamine impregnated paper on the surface of an inorganic board is characterized by comprising the following steps:
(1) sanding and dedusting the inorganic board, and adjusting the water content to obtain a pretreated inorganic board;
(2) superposing the pretreated inorganic plate and the polymer adhesive film to obtain a blank A;
(3) then, superposing the polymer adhesive film and the melamine impregnated paper to obtain a blank B;
(4) superposing the assembly B on the assembly A to obtain a pre-pressing plate, and then carrying out hot pressing treatment to obtain the composite material; in the step (2) and the step (3), the main component of the polymer adhesive film is PE or PE graft copolymer; the PE graft copolymer is polyethylene graft-modified with maleic anhydride.
2. The process of claim 1, wherein in step (1), the sanding belt used for sanding is 180-200 mesh, and the sanding speed is 45-50 m/min.
3. The facing process for pressing melamine-impregnated paper on the surface of an inorganic board according to claim 1, wherein in the step (1), the moisture content is adjusted to 5-8% for the inorganic board.
4. The facing process for laminating melamine impregnated paper on the surface of an inorganic plate according to claim 1, wherein the upper and lower layers of the polymer adhesive film are both release protective film layers, and the middle layer is a polymer self-adhesive layer.
5. The process of claim 4, wherein the main components of the polymeric self-adhesive layer are polyurethane, polyolefin elastomer and ethylene-vinyl acetate copolymer.
6. The facing process for pressing melamine impregnated paper on the surface of an inorganic board according to claim 1, wherein in the step (4), the temperature of the hot pressing treatment is 150 ℃ to 160 ℃, and the pressure of the hot pressing treatment is 12Mpa to 14 Mpa.
7. The facing process for pressing melamine impregnated paper on the surface of an inorganic board according to claim 1, wherein in the step (4), the time of the hot pressing treatment is 30-40s, the environment temperature of the hot pressing is 25-35 ℃, and the humidity of the hot pressing is 40-70%.
8. The process for decorating the surface of the inorganic board pressed with the melamine impregnated paper according to claim 1, wherein in the step (4), the hot pressing treatment is followed by edge cleaning treatment.
9. Use of the facing process of any of claims 1 to 8 in an inorganic board.
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| CN202011040007.8A CN112157746B (en) | 2020-09-28 | 2020-09-28 | Process for pressing melamine impregnated paper veneer on surface of inorganic board |
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| CN202011040007.8A CN112157746B (en) | 2020-09-28 | 2020-09-28 | Process for pressing melamine impregnated paper veneer on surface of inorganic board |
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| CN112157746B true CN112157746B (en) | 2022-02-18 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804251Y (en) * | 2005-06-29 | 2006-08-09 | 王晶中 | Reinforced aluminum/plastic compound floor |
| CN109130400A (en) * | 2018-08-06 | 2019-01-04 | 合肥中通防水工程有限公司 | A kind of HDPE Macromolecular self-adhesive membrane waterproof roll and its manufacturing process |
| CN211251578U (en) * | 2019-11-28 | 2020-08-14 | 杭州瑞艺户外休闲用品有限公司 | Novel outdoor furniture board |
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2020
- 2020-09-28 CN CN202011040007.8A patent/CN112157746B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804251Y (en) * | 2005-06-29 | 2006-08-09 | 王晶中 | Reinforced aluminum/plastic compound floor |
| CN109130400A (en) * | 2018-08-06 | 2019-01-04 | 合肥中通防水工程有限公司 | A kind of HDPE Macromolecular self-adhesive membrane waterproof roll and its manufacturing process |
| CN211251578U (en) * | 2019-11-28 | 2020-08-14 | 杭州瑞艺户外休闲用品有限公司 | Novel outdoor furniture board |
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| CN112157746A (en) | 2021-01-01 |
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