A paper-faced hybrid panel for interior partitions and a method for producing the same

Abstract

The application provides a paper-faced mixed artificial board for interior partition wall, which comprises a core layer, a sub-surface layer and a surface layer, wherein the core layer is a shaving board or a fiber board, the sub-surface layer is a wood veneer, the surface layer is a medium-thickness kraft paper, and the adhesive used between the core layer and the sub-surface layer and the wood veneer of the sub-surface layer is a citric acid glycerol hyperbranched polyester resin; the paper-faced mixed artificial board is prepared through continuous core layer preparation, continuous core layer gluing, connection and assembly, secondary hot pressing and post-processing to obtain a paper-faced mixed artificial board product; the method is based on a continuous flat shaving board production line or a medium-density fiber board production line, and through extension and reorganization, the defects of reduced production efficiency caused by intermittent molding are overcome, the heat transfer path of post-curing is shortened, the paper-faced mixed artificial board has excellent static bending strength and nail holding force, can meet the limited requirement of formaldehyde release of EN F-grade artificial board, and can be directly used for interior partition wall to meet the demand of fabricated building.

Description

TECHNICAL FIELD

[0001] The present application relates to a paper-faced mixed type of artificial board for interior partition wall and a production method thereof, and belongs to the technical field of wood processing and production. BACKGROUND

[0002] In the process of house building and interior decoration, especially after the completion of the main structure of the building, making interior partition wall to separate the indoor layout is an important part of the building. The materials for making interior partition wall include ordinary clay brick, light brick, glass brick, gypsum board, glass, and polystyrene particle sandwich board, etc. These materials have different properties, among which ordinary clay brick and light brick are the most commonly used, accounting for more than 90%, and have the advantages of heat preservation, sound insulation, high strength, etc., but have defects such as troublesome construction process, poor wall nail holding force, and inability to improve efficiency through prefabrication. At the same time, the production of solid clay bricks in China destroys about 5000 hectares of land per year, consumes 40 million to 50 million tons of standard coal, accounting for about 40% of the energy consumption of building material production. Gypsum board is a widely used interior partition wall material in the decoration process, which is usually composed of steel and wood keel as the framework and gypsum board as the panel. The gypsum board interior partition wall is convenient to construct and reasonable in price, but the wall made of it cannot hang heavy objects and has low overall strength, which is not suitable for making large-span interior partition wall. In addition, ordinary clay brick, light brick and gypsum board are all inorganic materials, which do not have the characteristics of sustainable use compared with biomass raw materials, and the overall comfort is also poor when used for interior partition wall.

[0003] Wood-based artificial board uses renewable biological resources as raw materials and has a broad application prospect as a building interior partition wall material. In some economically developed countries, the proportion of wood-based artificial board used as interior partition wall material in houses is close to 50%. In China, wood-based artificial board is mainly used for furniture manufacturing and interior decoration. Although the recently developed oriented strand board and fine surface oriented strand board can meet the application requirements of building interior partition wall, they have the disadvantages of complex production process, high cost, and poor surface decoration, etc. The use of low-cost ordinary strand board to make building interior partition wall has the disadvantages of low static bending strength and low nail holding force. With the rapid development of prefabricated buildings, new artificial board products that meet the requirements of building interior partition wall, especially those with excellent static bending strength and nail holding force and relatively low cost, are urgently needed to be developed. SUMMARY

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a paper-faced mixed type of artificial board for interior partition wall and a production method thereof, which overcomes the defects of the current wood-based artificial board used as building interior partition wall by combining the mechanical properties of different artificial board structural units.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The paper-faced mixed artificial board for building interior partition wall is composed of a core layer of shaving board or fiber board, a plurality of surface layers of wood veneer on both sides of the core layer, and a surface of kraft paper.

[0007] The adhesive used between the core layer and the secondary surface layer and between the wood veneers of the secondary surface layer is a citric acid glycerol hyperbranched polyester resin, which is suitable for hot core layer assembly and prevents the pre-solidification of the adhesive.

[0008] The citric acid glycerol hyperbranched polyester resin is prepared by adding 50% of the total amount of glycerol and a catalyst into a reaction kettle under stirring, heating to 90-95 DEG C, gradually adding citric acid within 30 minutes, slowly heating to 115-120 DEG C after the addition is completed, and controlling the viscosity growth rate to be 1-5 mPa·S per minute.

[0009] The citric acid is added in an amount of 200% of the mass of glycerol, and the catalyst is added in an amount of 0.1-0.5% of the mass of glycerol.

[0010] The core layer of the shaving board or fiber board used in the application can improve the production efficiency and product quality stability of the mixed artificial board, reduce the production cost of the mixed artificial board, and provide a technical solution for upgrading the existing shaving board production line and medium-density fiberboard production line.

[0011] The thickness of the core layer is 5-13 mm.

[0012] The core layer and the wood veneer are combined to improve the static bending strength and nail holding force of the mixed artificial board.

[0013] The total number of wood veneers is 4-10, and the thickness of the wood veneer is 0.5-3.0 mm.

[0014] The paper-faced mixed artificial board uses kraft paper on the surface, which solves the problem of discontinuity of the board blank in the production of plywood and improves the decorative performance of the final product.

[0015] Medium-thick kraft paper with a weight of 100-300 g / m 2 .

[0016] In another aspect, the present application provides a production method of the paper-faced hybrid panel for interior partition wall, which is produced by extending a continuous flat-pressing particle board or fiber board production line, using continuous forming and multi-stage hot pressing, and the specific steps are as follows:

[0017] 1. Primary forming

[0018] The continuous core layer is produced by using the production process of conventional particle board or fiber board and using continuous flat-pressing production method.

[0019] 2. Core layer processing and online continuous assembly

[0020] The two sides of the continuous core layer are sanded by using a sander, and the sanding depth is 0.01-0.10 mm; then, gluing is performed, wherein the double-sided gluing is performed by using a roller coating method, and the gluing amount is 50-100 g / m 2 ; finally, the assembly is performed online, and the particle board or fiber board is used as the continuous core layer, and a plurality of layers of wood veneers are laid on the upper and lower sides of the continuous core layer according to the principle of symmetric intersection (according to the intersection of wood veneer textures), and the surface is covered with medium-thick kraft paper, and the assembly is continuously performed to obtain a continuous panel blank of the paper-faced hybrid panel;

[0021] 3. Compound forming

[0022] The continuous panel blank of the paper-faced hybrid panel is cured and formed by a continuous flat-pressing hot press at high temperature and low pressure to obtain a cured and formed paper-faced hybrid panel.

[0023] The present application provides a high-temperature and low-pressure rapid forming method, which avoids the damage to the cohesion of the product formed in the first stage due to secondary forming, and the hot pressing temperature is 120-210 DEG C, and the pressure is 0.5-1.5 MPa.

[0024] In the above production method, the production line composed of a production line including a particle board or fiber board, a conveying mechanism, a continuous hot press, a gluing mechanism, and an assembly mechanism is used.

[0025] The present application has the following beneficial effects:

[0026] 1. The paper-faced hybrid panel for interior partition wall of the present application has the advantages of various types of panels, excellent static bending strength, nail holding force, and surface performance, and relatively low cost, and can be precast, has a large width, is convenient to saw, nail, and drill, and can be directly used for various finishing construction on the surface, and therefore, the installation and construction speed is convenient.

[0027] 2、The present application uses glycerol citrate hyperbranched polyester resin adhesive, which is beneficial to improve the bonding strength of the board, and can ensure that the production of mixed artificial board can meet the requirements of ENF grade artificial board formaldehyde emission limit standard, in addition, the number of wood veneer layers can be adjusted according to the performance requirements, and the performance of the artificial board is improved;

[0028] 3、The present application adopts the method of multiple hot pressing forming, fully absorbs the advantages of various artificial board production technologies, and considers the barrier-free connection with the existing production line, adopts the high-temperature low-pressure rapid forming method during composite forming, and avoids the damage of the cohesion of the primary formed product caused by secondary forming;

[0029] 4、The method is simple to operate, does not change the existing artificial particle board and medium density fiberboard production line equipment and process flow, only needs to extend the existing production line and add related equipment to produce mixed artificial board, and can provide a technical scheme for upgrading and reforming the existing particle board production line and medium density fiberboard production line;

[0030] 5、Compared with the existing materials, the paper-faced mixed artificial board for building interior partition wall has small quality, so as to reduce the load on the floor and floor layer, reduce the wall thickness, increase the use area of the building, and greatly reduce the material transportation amount;

[0031] The production method of the present application is based on a continuous flat-pressing particle board production line or a medium density fiberboard production line, and is extended and reorganized, wherein the continuous forming overcomes the defect of reduced production efficiency caused by intermittent forming, and the multiple hot pressing considers the curing characteristics of different blanks and shortens the heat transfer path of the later curing. The paper-faced mixed artificial board obtained by the present application enriches the variety of artificial boards, combines the performance advantages of various artificial boards, has excellent static bending strength and nail holding force, and is mainly used for building interior partition walls to meet the demand of prefabricated buildings. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structure schematic view of the paper-faced mixed artificial board for building interior partition wall of the present application;

[0033] Figure 2 is a production process schematic view of the paper-faced mixed artificial board for building interior partition wall of the present application;

[0034] In the figure: 1-thick kraft paper; 2-wood veneer I, 3-wood veneer II; 4-particle board or fiberboard; 4-hopper; 5-particle; 6-continuous flat-pressing particle board production line; 7-gluing mechanism; 8-conveying belt; 9-driving roller; 10-continuous hot press; 11-edge trimmer; 12-truncator. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0036] The paper-faced mixed artificial board for interior partition walls of buildings of the present application integrates the performance advantages of various artificial boards such as conventional plywood, particle board and fiber board, and fully absorbs the advantages of various artificial board production technologies in the manufacturing process. Compared with the current one-time forming method, the present application has higher efficiency, lower production cost and simpler quality control.

[0037] The primary forming of the present application is a relatively independent manufacturing unit. The particle board or fiber board produced by a conventional production line according to conventional technology is used as a prefabricated core layer for subsequent manufacturing, and the thickness is 5-13 mm.

[0038] In order to improve the bonding performance in the subsequent processing process, the core layer particle board or fiber board is sanded to improve the surface roughness;

[0039] In order to adapt to the process requirements of hot board blanks and the limited amount of formaldehyde release of ENF grade artificial boards, citric acid glycerol hyperbranched polyester resin adhesive is used.

[0040] The present application selects different gluing methods according to the requirements of the blank assembly, among which the roll coating method is selected for double-sided gluing. The gluing method is simple and well connected with the production line.

[0041] In the secondary blank assembly process, kraft paper is used on the continuous kraft paper, and the sub-surface layer is placed layer by layer, which solves the problem of discontinuous board blanks in the production technology of plywood and also solves the problem of poor board surface quality, improving the decorative performance of the final product.

[0042] The present application adopts the technology of multiple hot pressing forming, mainly considering that the heat transfer mode and efficiency of wood veneer are different from those of particle board and fiber board. There are a large number of voids in the particle board and fiber board blanks, while the heat transfer channels between the layers of the plywood blank are less, and the heat transfer efficiency of the two kinds of board blanks differs greatly. In view of this difference, the present application divides the current continuous flat press into two sections and adopts different hot pressing strategies. The high-temperature low-pressure rapid forming method is adopted in the compounding process to avoid the damage to the cohesion of the primary formed product caused by secondary forming.

[0043] Example 1: The thickness of the paper-faced mixed artificial board for interior partition walls of buildings prepared in this embodiment is 9 mm

[0044] 1. Particle board preparation

[0045] For example Figure 1As shown, the shavings 5 enter the continuous flat-pressed shaving board production line 6 from the hopper 4, and a continuous shaving board is prepared according to a conventional production process, the tree species is eucalyptus, and an isocyanate adhesive is selected to obtain a shaving board with a thickness of 5 mm, which is cooled, contact-type coarse sanded, and glued, and then added to the next process, wherein the sanding depth is 0.02 mm, the double-sided gluing uses a double-sided roller coating method of a roller coater, and the gluing amount is 50 g / m 2 ;

[0046] 2. Preparation of citric acid glycerol hyperbranched polyester resin

[0047] Under stirring, 50% of the total amount of glycerol and zinc chloride were added to the reaction kettle, heated to 90℃, and citric acid was gradually added within 30 minutes. After the addition was completed, the temperature was slowly increased to 115℃ and kept for 30 minutes, and the viscosity growth rate was controlled to be 3 mPa·S per minute. Then the remaining 50% of the glycerol was added within 30 minutes, and after keeping at 115℃ for 90 minutes, the temperature was reduced to 65℃, water was added, and the solid content was adjusted to 70%. After keeping at 65℃ for 30 minutes under stirring, the temperature was quickly reduced to 25℃ for standby. The amount of citric acid added was 200% of the mass of glycerol, and the amount of catalyst added was 0.1% of the mass of glycerol.

[0048] 3. Two layers of wood veneers were combined according to conventional plywood production technology to obtain a subsurface, the wood veneers were arranged with crossed textures (see Figure 2 Wood veneer I 2, wood veneer II 3), the tree species was eucalyptus, and the thickness of each layer of wood veneer was 1.0 mm. The adhesive used for the glued veneer was citric acid glycerol hyperbranched polyester resin. Under the conveying action of the conveyor belt 8 and the transmission roller 9, the double-sided glued shaving board was used as the core layer, and the above-prepared subsurface was laid on the upper and lower sides of the core layer, a total of 4 layers of wood veneers, and the surface layer was kraft paper with a grammage of 100 g / m 2 ;

[0049] 4. High-temperature and low-pressure forming was performed using a continuous hot press 10, the hot pressing temperature was 210℃, and the pressure was 0.5 MPa.

[0050] 5. Conventional edge trimmer 11 and cutting machine 12 were used for cutting and edge trimming to obtain a paper-faced hybrid wood-based panel product with a thickness of 9 mm for building interior partitions. The performance of the product was tested, and the results are shown in Table 1.

[0051] Table 1

[0052] .

[0053] Example 2: In this example, a paper-faced hybrid wood-based panel with a thickness of 11 mm for building interior partitions was prepared

[0054] 1. Fiberboard preparation

[0055] The core layer is prepared according to the conventional fiberboard production process, the tree species is poplar, and a conventional urea-formaldehyde resin adhesive is selected to obtain a fiberboard with a thickness of 6 mm, which is cooled, contacted with coarse sand, and coated with glue before being added to the next process, wherein the sanding depth is 0.10 mm, the double-sided glue coating uses a roll coating method, and the glue coating amount is 80 g / m 2 ;

[0056] 2. Preparation of citric acid glycerol hyperbranched polyester resin:

[0057] Under stirring, 50% of the total amount of glycerol and zinc chloride were added to the reaction kettle, heated to 95℃, and citric acid was gradually added within 30 minutes. After the addition was completed, the temperature was slowly increased to 120℃ and kept for 30 minutes, and the viscosity increase rate was controlled to be 2 mPa·S per minute. Then the remaining 50% of the glycerol was added within 30 minutes, and after keeping at 120℃ for 90 minutes, the temperature was lowered to 70℃, water was added, and the solid content was adjusted to 65%. After keeping at 70℃ for 30 minutes under stirring, the temperature was quickly lowered to 30℃ for standby. The addition amount of citric acid was 200% of the mass of glycerol, and the addition amount of catalyst was 0.2% of the mass of glycerol.

[0058] 3. Preparation of the subsurface layer according to the conventional plywood production technology, the multi-layer wood veneer is arranged according to the texture intersection, the tree species is poplar, the thickness of each layer of wood veneer is 1.25 mm, and the adhesive used for the glue-coated veneer is citric acid glycerol hyperbranched polyester resin. The fiberboard with sanding is used as the core layer, and the subsurface layer is laid on the upper and lower sides of the core layer, a total of 4 layers of wood veneer are laid, the surface layer is a kraft paper with a grammage of 150 g / m 2 , and the continuous board blank of paper-faced mixed wood-based panel is obtained by continuous lamination.

[0059] 4. Compound forming

[0060] The continuous flat pressing hot press is used for high temperature and low pressure forming, wherein the hot pressing temperature is 190℃, and the pressure is 1.5 MPa; the cutting and edge processing are carried out according to the conventional processing procedure, and the paper-faced mixed wood-based panel product with a thickness of 11 mm for building interior partition wall is obtained. The performance test is carried out on the product, and the results are shown in Table 2:

[0061] Table 2

[0062] .

[0063] Example 3: In this example, a paper-faced mixed wood-based panel with a thickness of 13 mm for building interior partition wall is prepared

[0064] 1. Particle board preparation

[0065] The core layer is prepared according to a conventional shaving board production process, the tree species is eucalyptus, and an isocyanate adhesive is selected to obtain a shaving board with a thickness of 8 mm, which is cooled, contacted with coarse sand, and coated with glue, and then added to the next process, wherein the sanding depth is 0.05 mm, the double-sided glue coating uses a roll coating method, and the glue coating amount is 100 g / m 2 ;

[0066] 2. Preparation of citric acid glycerol hyperbranched polyester resin

[0067] Under stirring, 50% of the total amount of glycerol and zinc chloride were added to the reaction kettle, heated to 92℃, and citric acid was gradually added within 30 minutes. After the addition was completed, the temperature was slowly increased to 118℃ and kept for 30 minutes, and the viscosity growth rate was controlled at 4 mPa·S per minute. The remaining 50% of the glycerol was added within 30 minutes, and after keeping at 118℃ for 90 minutes, the temperature was reduced to 68℃, water was added, and the solid content was adjusted to 75%. After keeping at 65℃ for 30 minutes under stirring, the temperature was quickly reduced to 30℃ for standby. The amount of citric acid added was 200% of the mass of glycerol, and the amount of catalyst added was 0.3% of the mass of glycerol.

[0068] 3. According to the conventional plywood production technology, 5 layers of wood veneer were compounded to obtain the subsurface layer, the tree species was eucalyptus, and the thickness of the wood veneer was 0.5 mm. The wood veneer was coated with citric acid glycerol hyperbranched polyester resin, and the single-sided glue coating amount was 200 g / m 2 ; the shaving board with double-sided glue coating was the core layer, and 10 layers of wood veneer were laid on the upper and lower sides of the core layer, and the surface layer was kraft paper with a grammage of 200 g / m 2 , and the continuous board blank of paper-faced mixed wood-based panel was obtained by continuous pressing.

[0069] 4. Compound molding

[0070] High temperature and low pressure molding was performed using a continuous flat pressing hot press, the hot pressing temperature was 180℃, the pressure was 1.0 Mpa, and the cutting and edge processing were performed according to the conventional processing procedure, and the thickness of the paper-faced mixed wood-based panel product for building interior partition wall was 13 mm. The performance test results of the product are shown in Table 3:

[0071] Table 3

[0072] .

[0073] Example 4: In this example, a paper-faced mixed wood-based panel with a thickness of 15 mm for building interior partition wall was prepared

[0074] 1. Shaving board preparation

[0075] Prepared according to the oriented strand board production process, the tree species is eucalyptus, and an isocyanate adhesive is selected to obtain the oriented strand board with a thickness of 7 mm, which is cooled, contacted with coarse sand, and coated with glue, and then added to the next process, wherein the sanding depth is 0.06 mm, the double-sided coating uses a roller coating method, and the coating amount is 70 g / m 2 ;

[0076] 2. Preparation of citric acid glycerol hyperbranched polyester resin

[0077] Under stirring, 50% of the total amount of glycerol and zinc chloride were added to the reaction kettle, heated to 90℃, and citric acid was gradually added within 30 minutes. After the addition was completed, the temperature was slowly increased to 120℃ and kept for 30 minutes, and the viscosity growth rate was controlled to be 2 mPa·S per minute. Then the remaining 50% of the glycerol was added within 30 minutes, and after keeping at 120℃ for 90 minutes, the temperature was reduced to 70℃, water was added, and the solid content was adjusted to 65%. After keeping at 70℃ for 30 minutes under stirring, the temperature was quickly reduced to 30℃ for standby. The addition amount of citric acid was 200% of the mass of glycerol, and the addition amount of catalyst was 0.4% of the mass of glycerol.

[0078] 3. Two layers of wood veneers were compounded according to the conventional plywood production technology to obtain the subsurface, and the tree species was eucalyptus with a veneer thickness of 2.0 mm. The wood veneer was coated with citric acid glycerol hyperbranched polyester resin, and the single-sided coating amount was 200 g / m 2 . The double-sided coated oriented strand board was the core layer, and four layers of wood veneers were laid on the upper and lower sides of the core layer, and the surface layer was a kraft paper with a grammage of 300 g / m 2 , and the paper-faced hybrid wood-based panel continuous blank was obtained by connecting the groups.

[0079] 3. Compound molding

[0080] The continuous flat hot press was used for high-temperature and low-pressure molding, and the hot pressing temperature was 180℃ and the pressure was 1.0 MPa. According to the conventional processing procedure, the cutting and edge trimming treatment was carried out, and the paper-faced hybrid wood-based panel product with a thickness of 15 mm for building interior partition wall was obtained. The performance test was carried out on the product, and the results are shown in Table 4:

[0081] Table 4

[0082] .

Claims

1. A paper-faced hybrid wood-based panel for use in interior partitions, characterized in that: The paper-faced mixed artificial board comprises a core layer, a subsurface layer and a surface layer, the subsurface layer is arranged on both sides of the core layer, and the surface layer is arranged outside the subsurface layer, wherein the core layer is a shaving board or a fiber board, the subsurface layer is a wood veneer, the surface layer is a medium-thickness kraft paper, and the adhesive used between the core layer and the subsurface layer and between the wood veneers of the subsurface layer is a citric acid glycerol hyperbranched polyester resin. The citric acid glycerol hyperbranched polyester resin is prepared by adding 50% of the total amount of glycerol, a catalyst into a reaction kettle under stirring, heating to 90-95℃, gradually adding citric acid within 30 min, then heating to 115-120℃ and keeping the reaction for 25-35 min, and controlling the viscosity growth rate to be 1-5 mPa·S per minute; then adding the remaining 50% of the glycerol within 30 min, reacting for 90 min, cooling to 65-70℃, adding water, adjusting the solid content to 65-75%, reacting for 30 min at 65-70℃, and cooling to 25-35℃. The above-mentioned paper-faced mixed artificial board for building interior partition wall is prepared by extending the continuous flat pressing shaving board or fiber board production line and hot pressing in batches, and the specific steps are as follows: (1) according to the production process of the shaving board or the fiber board, a continuous core layer is prepared by using a continuous flat pressing production method; (2) the continuous core layer is sequentially cooled, contacted with coarse sand, and coated with glue, and then a plurality of subsurface layers and surface layers are continuously laid on both sides of the continuous core layer, the wood veneers of the subsurface layers are arranged in a cross-grain manner, and then the surface layers are covered on the subsurface layers to obtain a continuous board blank of the paper-faced mixed artificial board, and the continuous board blank of the paper-faced mixed artificial board is cured and formed by a continuous flat pressing hot press to obtain a cured and formed paper-faced mixed artificial board; the hot pressing temperature in the high-temperature and low-pressure curing and forming is 120-210℃, and the pressure is 0.5-1.5 MPa; (3) the cured and formed paper-faced mixed artificial board is cut and edged to obtain a finished paper-faced mixed artificial board.

2. The paper-faced hybrid wood-based panel for use in interior partitions according to claim 1, characterized in that: The addition amount of citric acid is 200% of the mass of glycerol, and the addition amount of catalyst is 0.1-0.5% of the mass of glycerol.

3. The paper-faced hybrid wood-based panel for use in interior partitions according to claim 1, characterized in that: The thickness of the shaving board or fiber board is 5-13 mm; the thickness of the wood veneer is 0.5-3.0 mm, the total number of the wood veneer is 4-10 layers; the medium-thickness kraft paper has a weight of 100-300 g / m 2 .

4. The paper-faced hybrid wood-based panel for use in interior partitions according to claim 1, characterized in that: In step (2), the contact type coarse sanding has a sanding depth of 0.01-0.10 mm.

5. The paper-faced hybrid wood-based panel for use in interior partitions according to claim 1, characterized in that: In step (2), the glue coating uses a roll coater for double-sided glue coating, and the glue coating amount is 50-100 g / m2.

6. The paper-faced hybrid wood-based panel for use in interior partitions according to claim 1, characterized in that: In the production, a production line including a shaving board or fiber board production line, a conveying mechanism, a continuous hot press, a glue coating mechanism and a board blank assembling mechanism is used.

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