阅读说明：本技术 一种三聚氰胺复合板 (Melamine composite board ) 是由 张爱文 于 2019-10-29 设计创作，主要内容包括：本发明涉及建筑板材技术领域,尤其为一种三聚氰胺复合板,包括玻镁板、平衡层、中层板、板皮层和三聚氰胺浸渍纸。本发明中,利用有机氟、水性聚氨脂、阴离子表面活性剂和低醛胶水作为三聚氰胺纸的涂料,降低甲醛的释放量,同时增强三聚氰胺纸高亮度、高抗污的特定,该板材的制作工艺,全程使用乳胶作为粘合剂,进一步减少甲醛含量,同时,由于乳胶不需要进行热压就可获得良好的粘固效果,所以本发明中只需要使用常温冷压就可将三聚氰胺浸渍纸粘固在板材上,有效减少生产能耗,节约了能源成本,适宜推广使用。(The invention relates to the technical field of building boards, in particular to a melamine composite board which comprises a glass magnesium board, a balance layer, a middle layer board, a board skin layer and melamine impregnated paper. According to the manufacturing process of the melamine impregnated paper, the organic fluorine, the water-based polyurethane, the anionic surfactant and the low-formaldehyde glue are used as the coating of the melamine paper, so that the release amount of formaldehyde is reduced, the high brightness and high anti-fouling performance of the melamine paper are enhanced, the latex is used as the adhesive in the whole process, the formaldehyde content is further reduced, and meanwhile, the latex can obtain a good cementation effect without hot pressing, so that the melamine impregnated paper can be cemented on the board only by cold pressing at normal temperature, the production energy consumption is effectively reduced, the energy cost is saved, and the manufacturing process is suitable for popularization and use.)

1. The utility model provides a melamine composite sheet, includes glass magnesium board (1), balanced layer (2), well plywood (3), board cortex (4) and melamine impregnated paper (5), its characterized in that: the processing of the melamine composite board comprises the following steps:

1) the preparation method comprises the following steps of preparing a melamine adhesive, wherein specifically, the melamine adhesive comprises organic fluorine, water-based polyurethane, an anionic surfactant and low-aldehyde glue, adding the anionic surfactant into the low-aldehyde glue and then stirring to obtain a primary adhesive, then mixing and stirring the organic fluorine and the water-based polyurethane uniformly to form a mixture, adding the mixture into the primary adhesive and stirring uniformly to obtain the melamine adhesive;

2) coating the melamine adhesive on the surface layer of kraft paper to obtain melamine paper (5);

3) gluing the upper side and the lower side of a glass magnesium board (1), then adhering a balance layer (2), gluing again, adhering a middle layer board (3), cold pressing for 1-2 hours at normal temperature under the pressure of 7-9Mpa, and finishing the surface after cold pressing to obtain a semi-finished product;

4) carrying out hot pressing on the cold-pressed semi-finished plate for 8 minutes at the temperature of 110-120 ℃ and under the pressure of 7-9Mpa, and carrying out first curing after hot pressing for 8 days;

5) sanding the semi-finished plate after the first cultivation, coating glue solution on two sides, attaching a plate skin layer (4), and cold pressing for 35-40 minutes at normal temperature under the pressure of 7-9 Mpa;

6) after the cold pressing is finished, the semi-finished product is placed at the temperature of 120-140 ℃, the pressure is 8-10Mpa, and the hot pressing is carried out for 8-10 minutes;

7) and (3) finishing the board surface and sanding after hot pressing, coating latex on the upper and lower surfaces of the semi-finished product after sanding, sticking melamine paper (5), cold pressing for 5 hours at normal temperature under the pressure of 5-7Mpa, and cutting to obtain the finished product.

2. A melamine composite board according to claim 1, wherein: the balance layer (2) is prepared by impregnating kraft paper made of semi-bleached sulfite wood pulp with melamine resin and thermally curing the kraft paper.

3. A melamine composite board according to claim 1, wherein: the middle layer plate (3) is made of poplar.

4. A melamine composite board according to claim 1, wherein: the board cortex (4) is made of radiata pine.

Technical Field

The invention relates to the technical field of building boards, in particular to a melamine composite board.

Background

Most melamine boards in the market at present are decorative boards which are prepared by soaking paper with different colors or textures in melamine resin adhesive, drying to a certain degree of curing, adhering the paper to the surfaces of shaving boards, moisture-proof boards, medium-density fiberboards, plywood, blockboards or other hard fiberboard and hot-pressing the paper. The plate has the advantages of smooth surface, difficult deformation due to the same expansion coefficient of the two surfaces of the plate, bright color, wear resistance and corrosion resistance of the surface and economic price, but the formaldehyde content cannot be effectively reduced to influence the health, so the melamine composite plate is provided for solving the problems.

Disclosure of Invention

The invention aims to provide a melamine composite board, which utilizes organic fluorine, water-based polyurethane, an anionic surfactant and low-formaldehyde glue as a coating of melamine paper, reduces the release amount of formaldehyde, and simultaneously enhances the characteristics of high brightness and high stain resistance of the melamine paper.

In order to achieve the purpose, the invention provides the following technical scheme:

the melamine composite board comprises a glass magnesium board, a balance layer, a middle layer board, a board skin layer and melamine impregnated paper, and the processing of the melamine composite board comprises the following steps:

1. the preparation method comprises the following steps of preparing a melamine adhesive, wherein specifically, the melamine adhesive comprises organic fluorine, water-based polyurethane, an anionic surfactant and low-aldehyde glue, adding the anionic surfactant into the low-aldehyde glue and then stirring to obtain a primary adhesive, then mixing and stirring the organic fluorine and the water-based polyurethane uniformly to form a mixture, adding the mixture into the primary adhesive and stirring uniformly to obtain the melamine adhesive;

2. coating the melamine adhesive on the surface layer of kraft paper to obtain melamine paper;

3. gluing the upper side and the lower side of the glass magnesium board, then gluing a balance layer, gluing again, pasting a middle layer board, cold pressing for 1-2 hours at normal temperature under the pressure of 7-9Mpa, and finishing the surface after cold pressing to obtain a semi-finished product;

4. carrying out hot pressing on the cold-pressed semi-finished plate for 8 minutes at the temperature of 110-120 ℃ and under the pressure of 7-9Mpa, and carrying out first curing after hot pressing for 8 days;

5. sanding the semi-finished plate after the first cultivation, smearing glue solution on two surfaces of the semi-finished plate, attaching a plate skin layer, and cold pressing for 35-40 minutes at normal temperature and under the pressure of 7-9 Mpa;

6. after the cold pressing is finished, the semi-finished product is placed at the temperature of 120-140 ℃, the pressure is 8-10Mpa, and the hot pressing is carried out for 8-10 minutes;

7. and finishing and sanding the board surface after hot pressing, coating latex on the upper and lower surfaces of the semi-finished product after sanding, adhering melamine paper, cold pressing for 5 hours at normal temperature under the pressure of 5-7Mpa, and cutting to obtain the finished product.

Preferably, the balance layer is prepared by impregnating kraft paper made of semi-bleached wood sulfite with melamine resin and thermally curing.

Preferably, the middle-layer plate is made of poplar.

Preferably, the material of the board skin layer is radiata pine.

Compared with the prior art, the invention has the beneficial effects that: the manufacturing process of the board uses latex as an adhesive in the whole process, so that the formaldehyde content is further reduced, and meanwhile, the latex can obtain a good cementation effect without hot pressing.

Drawings

Fig. 1 is a schematic view of the overall structure of a melamine composite board according to the present invention.

In the figure: 1. a glass magnesium board; 2. a balancing layer; 3. a middle layer plate; 4. a sheet skin layer; 5. melamine impregnated paper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution:

the melamine composite board comprises a glass magnesium board 1, a balance layer 2, a middle layer board 3, a veneer layer 4 and melamine impregnated paper 5, and the processing of the melamine composite board comprises the following steps:

1. the preparation method comprises the following steps of preparing a melamine adhesive, wherein specifically, the melamine adhesive comprises organic fluorine, water-based polyurethane, an anionic surfactant and low-aldehyde glue, adding the anionic surfactant into the low-aldehyde glue and then stirring to obtain a primary adhesive, then mixing and stirring the organic fluorine and the water-based polyurethane uniformly to form a mixture, adding the mixture into the primary adhesive and stirring uniformly to obtain the melamine adhesive;

2. coating the melamine adhesive on the surface layer of kraft paper to obtain melamine paper 5;

3. gluing the upper side and the lower side of the glass magnesium board 1, then adhering the balance layer 2, gluing again, adhering the middle layer board 3, cold pressing at normal temperature under the pressure of 7-9Mpa for 1-2 hours, and finishing the surface after cold pressing to obtain a semi-finished product;

4. carrying out hot pressing on the cold-pressed semi-finished plate for 8 minutes at the temperature of 110-120 ℃ and under the pressure of 7-9Mpa, and carrying out first curing after hot pressing for 8 days;

5. sanding the semi-finished plate after the first cultivation, smearing glue solution on two surfaces, attaching a plate skin layer 4, and cold pressing at normal temperature and under the pressure of 7-9Mpa for 35-40 minutes;

6. after the cold pressing is finished, the semi-finished product is placed at the temperature of 120-140 ℃, the pressure is 8-10Mpa, and the hot pressing is carried out for 8-10 minutes;

7. and finishing and sanding the board surface after hot pressing, coating latex on the upper and lower surfaces of the semi-finished product after sanding, sticking melamine paper 5, cold pressing for 5 hours at normal temperature under the pressure of 5-7Mpa, and cutting to obtain the finished product.

Wherein, the balance layer 2 is prepared by impregnating kraft paper made of semi-bleached sulfite wood pulp with melamine resin and thermally curing.

Wherein, the middle layer plate 3 is made of poplar.

Wherein, the material of the slab layer 4 is radiata pine.

The manufacturing process of the board uses latex as an adhesive in the whole process, further reduces the formaldehyde content, and simultaneously can obtain a good cementation effect without hot pressing, so that the melamine impregnated paper can be cemented on the board only by cold pressing at normal temperature, thereby effectively reducing the production energy consumption, saving the energy cost and being suitable for popularization and use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.