Environment-friendly furniture plate with built-in calcium silicate plate core and manufacturing method thereof

Abstract

The application discloses an environmentally-friendly furniture plate with a built-in calcium silicate plate core and a manufacturing method thereof, which comprises a calcium silicate plate, a decorative layer and an adhesive; the calcium silicate plate further contains magnetic fibers and light anti-cracking fibers; the adding amount ratio of the magnetic fibers to the light anti-cracking fibers is 1:3-1:5, and the total adding amount of the magnetic fibers and the light anti-cracking fibers does not exceed 15% of the total weight of the calcium silicate plate; the light anti-cracking fibers are uniformly distributed in the calcium silicate plate, the magnetic fibers are directionally distributed in the calcium silicate plate, and the quantity and directionality of the magnetic fibers near the two surfaces of the calcium silicate plate are stronger than those of the magnetic fibers in the middle part; the magnetic fibers near the surface layer or the magnetic fibers and the light anti-cracking fibers together are exposed from the surface layer of the calcium silicate plate and connected with the adhesive. The furniture plate has the characteristics of light weight, high strength, crack resistance, fire resistance, safety and environmental protection, and is suitable for manufacturing various furniture.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture plate production and processing, in particular to an environmentally-friendly furniture plate with a built-in calcium silicate plate core and a manufacturing method thereof. BACKGROUND

[0002] Custom furniture refers to personalized furniture configuration according to personal preferences, space details, etc., which is mainly concentrated in the fields of custom cabinets, custom wardrobes, etc. in China. With the improvement of people's pursuit of life quality, the maturity of furniture consumption concept, and the improvement of furniture production technology, custom furniture has gradually expanded from the fields of custom cabinets, custom wardrobes, etc. to the fields of whole-house furniture such as study, children's room, living room, dining room, etc.

[0003] People pay great attention to the control of decoration materials during decoration. Especially now, people pay more and more attention to the environmental protection of decoration plates. After all, furniture such as wardrobes, cabinets, tea tables, etc. used at home will involve the existence of plates. In order to make the environment at home more environmentally friendly, most consumers will choose environmentally friendly plates with higher safety. Although E0 grade plates are currently relatively high in environmental protection level, they only represent a small amount of formaldehyde content and are not completely harmless, so many people want to use the most environmentally friendly plates. Now there are domestic calcium silicate plate manufacturers who have developed calcium silicate plates as furniture plate cores to produce furniture.

[0004] In addition to the functions of traditional plates, calcium silicate plates also have excellent fireproof performance and moisture resistance. However, there are many types of calcium silicate plates, and not all of them can be used as furniture plates. As a furniture plate, a low-density lightweight plate is required, with a density of less than 0.9 g / cm 3 , or even lower, and higher strength is required. Ordinary calcium silicate plates are brittle and easily broken, and if used as furniture plate cores, the strength must be at least 10 MPa.

[0005] In addition, the plate and the decorative layer need to have good bonding ability. In order to improve the bonding ability of the surface of the calcium silicate plate, the surface of the calcium silicate plate usually needs to be treated with permeation, but the permeation treatment time is long and needs to be carried out under a certain temperature and pressure range, which is not convenient to operate. SUMMARY

[0006] The present application relates to the technical field of furniture plate production and processing, in particular to an environmentally-friendly furniture plate with a built-in calcium silicate plate core and a manufacturing method thereof.

[0007] To achieve the above object, the technical scheme adopted by the present application is:

[0008] The application discloses an environmentally-friendly furniture plate with a built-in calcium silicate plate core, which comprises a calcium silicate plate as the plate core, decorative layers attached to the upper and lower surfaces of the calcium silicate plate respectively, and an adhesive arranged between the calcium silicate plate and the decorative layers; the calcium silicate plate further contains magnetic fibers and light anti-cracking fibers, the adding amount ratio of the magnetic fibers to the light anti-cracking fibers is 1:3-1:5, the total adding amount of the magnetic fibers and the light anti-cracking fibers is not more than 15% of the total weight of the calcium silicate plate, the light anti-cracking fibers are uniformly distributed in the calcium silicate plate, the magnetic fibers are directionally distributed in the calcium silicate plate, and the quantity and directionality of the magnetic fibers near the two surfaces of the calcium silicate plate are stronger than those of the magnetic fibers in the middle part; the magnetic fibers near the surface layer or the magnetic fibers and the light anti-cracking fibers together are exposed from the surface layer of the calcium silicate plate and connected with the adhesive.

[0009] The environmentally-friendly furniture plate with the built-in calcium silicate plate core has simple structure and is easy to manufacture; the setting of the magnetic fibers and the light anti-cracking fibers can enhance the anti-cracking property and bending strength of the calcium silicate plate, improve the connecting performance of the plate and the adhesive, make the adhesive strength of the laid decorative layer higher and prevent the decorative layer from being separated; the whole plate contains very low aldehyde content and basically does not volatilize harmful substances such as formaldehyde, has good safety and environmental protection performance, and is suitable for manufacturing various furniture.

[0010] The calcium silicate plate provided with the magnetic fibers and the light anti-cracking fibers does not need long-time pressure penetration treatment during glue coating and pressing, and only needs simple polishing process to expose part of the surface layer fibers, so as to enhance the combination ability of the fibers and the adhesive and prevent separation of the glue and the powder surface; the method is like setting a large number of small connecting bridges on the surface layer of the calcium silicate plate, which plays a connecting role and also plays a role in sharing and dispersing stress.

[0011] Moreover, the magnetic fibers and the light anti-cracking fibers are located in the calcium silicate plate body, and the anti-cracking property and durability of the calcium silicate plate are improved; the calcium silicate plate is made of mixed slurry and is a multi-phase non-homogeneous material, if the fibers span across both ends of a crack and play a bridging role, the magnetic fibers and the light anti-cracking fibers can transmit stress and delay and prevent further development of the crack; the existence of the magnetic fibers and the light anti-cracking fibers can reduce the width of the crack and the generation of the crack, and also enhance the overall bending resistance, so that the calcium silicate plate is not so brittle; since the calcium silicate plate itself has fireproof performance, the setting of the magnetic fibers and the light anti-cracking fibers can further improve the high-temperature performance, and the calcium silicate plate will not burst and generate toxic gas in a high-temperature or burning environment.

[0012] The combination of the magnetic fiber and the lightweight anti-cracking fiber can both reflect the anti-cracking performance, and the lightweight anti-cracking fiber can balance the weight, neutralize the density, and correspond to the low-density material to reduce the overall density, so that the calcium silicate board can maintain low density while adding magnetic fibers.

[0013] The magnetic fiber can affect the distribution of the magnetic fiber in the surface layer of the plate during the plate forming process through the control of the external magnetic field and magnetic force, so that the magnetic fiber has good directionality, such as transverse or oblique distribution, so that it can better play the role of anti-cracking, and the magnetic fiber can also be close to the surface layer and have more fibers distributed at the surface layer to facilitate the adhesion of the adhesive.

[0014] Through such a setting, the clamp plate with a calcium silicate plate core can be lighter, stronger and better in anti-cracking performance, the surface decorative layer is not easy to fall off, and there is no need to set too many layered structures, so the structure is simpler and thinner, and the economy and practicability are better.

[0015] Further, the magnetic fiber and the lightweight anti-cracking fiber both include long fibers and short fibers, and the average length of the fibers in the magnetic fiber is greater than the average length of the fibers in the lightweight anti-cracking fiber.

[0016] The combination of long and short fibers can better enhance the anti-bending performance in all directions and cope with cracks in different directions. For example, under the action of magnetic force, short fibers can maintain transverse distribution and can better inhibit the generation and spread of surface cracks. Long fibers will form an inclined distribution under the action of magnetic force, such as one end of the long fiber away from the surface layer, which is less affected by the magnetic force and basically does not move, while the end close to the surface layer will move under the action of magnetic force, so that the long fiber in the thickness direction is inclined, which can improve the overall connection strength and prevent through cracks, and the end of the long fiber close to the surface layer is also convenient for exposure.

[0017] Further, the total amount of the magnetic fiber and the lightweight anti-cracking fiber added is 3% to 5% or 5% to 10% or 10 to 15% of the total weight of the calcium silicate board. By controlling different amounts, low-density calcium silicate boards (0.9g / cm 3 and ultra-low-density calcium silicate boards (0.6g / cm 3 below) can be obtained.

[0018] Further, the exposed size of the magnetic fiber and / or the lightweight anti-cracking fiber is 0.01 to 1mm, and does not exceed the thickness of the adhesive. A slight treatment can be performed during the grinding process.

[0019] Further, the magnetic fiber is iron fiber or ferrite fiber, which is easy to be controlled by magnetic field; the lightweight anti-cracking fiber is carbon fiber, which is light in weight and high in strength and stability.

[0020] Further, the decorative layer is wood skin, bamboo skin or decorative film.

[0021] Further, the adhesive is one of polyvinyl acetate adhesive, isocyanate adhesive, formaldehyde-free resin and two-component polyurethane adhesive, which is free of aldehyde and has better safety.

[0022] An environmental-friendly furniture plate with built-in calcium silicate plate core, comprising the following steps:

[0023] Step one, manufacturing low-density calcium silicate plate, adding magnetic fiber and lightweight anti-cracking fiber in the process of manufacturing the calcium silicate plate, and controlling the directionality of the magnetic fiber on the surface layer by magnetic separation;

[0024] Step two, surface treatment of the batch-manufactured calcium silicate plate, polishing the calcium silicate plate by a polishing machine or low-mesh sandpaper to expose the magnetic fiber on the surface layer, and the polishing thickness is not more than 1mm;

[0025] Step three, pressing and pasting the decorative layer, laying a decorative layer material on the workbench, coating adhesive on the decorative layer, placing the calcium silicate plate in step two on the decorative layer, coating adhesive on the surface of the calcium silicate plate, and laying another layer of decorative layer, and pressing and forming the three layers by pressing.

[0026] Further, the calcium silicate plate is prepared by mixing light material, quartz sand tailings, calcium hydroxide, wollastonite, vermiculite powder, aluminum oxide, wood pulp, magnetic fiber and lightweight anti-cracking fiber, including the processes of beating, pulp placement, flow slurry forming, curing and demolding, autoclaving, drying and polishing, the magnetic fiber and the lightweight anti-cracking fiber are added in the beating process, and the flow slurry forming process uses a mold forming plate, and the mold is provided with a vibrating device and a magnetic separation device.

[0027] Further, the mold comprises a lower mold and an upper mold, the vibrating device comprises a micro-vibrator, and the magnetic separation device is an electromagnet; the lower mold is fixedly installed on the workbench, the lower mold is provided with a lower mold cavity, a plurality of electromagnets are arranged in the lower mold cavity, the upper mold is installed below the lifting mechanism, the upper mold is provided with an upper mold cavity, one side of the upper mold cavity facing the lower mold is also provided with a plurality of electromagnets, and a plurality of micro-vibrators are also installed in the upper mold cavity.

[0028] Compared with the prior art, the present application has the following advantages: 1. The furniture plate with the environmentally friendly built-in calcium silicate plate core has a simple structure and is easy to manufacture. The use of the magnetic fibers and the lightweight anti-cracking fibers can enhance the crack resistance and bending strength of the calcium silicate plate, improve the connection performance of the plate and the adhesive, and make the laid decorative layer have high bonding strength and be less likely to separate; moreover, the entire plate has very low aldehyde content and basically does not volatilize harmful substances such as formaldehyde, has good safety and environmental protection performance, and is suitable for manufacturing various furniture; 2. The calcium silicate plate provided with the magnetic fibers and the lightweight anti-cracking fibers does not need to be subjected to long-time pressure penetration treatment during glue coating and pressing, and the connection and fixing effect of the fibers can enhance the bonding capacity of the plate and the adhesive and prevent separation of the glue and the powder surface; 3. The use of the magnetic fibers and the lightweight anti-cracking fibers can balance the density, so that the calcium silicate plate can maintain low density while adding the magnetic fibers; 4. The use of long fibers and short fibers can better enhance the bending resistance in all directions and cope with cracks in different directions; the long fibers can form long fibers inclined in the thickness direction under the action of the magnetic force, which can improve the connection strength as a whole, prevent penetrating cracks, and facilitate the end portion of the long fibers to be arranged near the surface to be exposed. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the layered structure of the furniture plate with the environmentally friendly built-in calcium silicate plate core of the present application.

[0030] Figure 2 It is a schematic view of the layered structure of the furniture plate with the environmentally friendly built-in calcium silicate plate core of the present application. Figure 1 It is an enlarged structure schematic view of position A.

[0031] Figure 3 It is a schematic view of the calcium silicate plate with the exposed magnetic fibers.

[0032] Figure 4 It is a schematic view of the setting of a magnetic field during the forming process of the calcium silicate plate.

[0033] In the figure: 1, calcium silicate plate; 2, decorative layer; 3, adhesive; 4, magnetic fiber; 5, lightweight anti-cracking fiber; 6, lower mold; 7, upper mold; 8, lower mold cavity; 9, electromagnet; 10, upper mold cavity; 11, micro vibrator. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of this invention, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Example 1:

[0037] like Figures 1 to 3 As shown, an environmentally friendly furniture board with an embedded calcium silicate core includes a calcium silicate board 1 as the core. Decorative layers 2 are pressed onto the top and bottom surfaces of the calcium silicate board 1, and an adhesive 3 is provided between the calcium silicate board 1 and the decorative layers 2. The calcium silicate board 1 also contains magnetic fibers 4 and lightweight crack-resistant fibers 5, with a ratio of 1:3 (amount added per square meter) for the magnetic fibers 4 and the lightweight crack-resistant fibers 5. The total amount of magnetic fibers 4 and lightweight crack-resistant fibers 5 added does not exceed 15% of the total weight of the calcium silicate board. The lightweight crack-resistant fibers 5 are uniformly distributed in the calcium silicate board 1, and the magnetic fibers 4 are directionally distributed in the calcium silicate board 1, with the number and directionality of the magnetic fibers 4 near the two sides of the calcium silicate board 1 being stronger than those in the middle. The magnetic fibers 4 near the surface, or the magnetic fibers 4 together with the lightweight crack-resistant fibers 5, protrude from the surface of the calcium silicate board 1 and are connected to the adhesive 3.

[0038] This environmentally friendly furniture board with a built-in calcium silicate core has a simple structure and is easy to manufacture. The magnetic fibers 4 and lightweight crack-resistant fibers 5 enhance the crack resistance and bending strength of the calcium silicate board 1, and also improve the bonding performance between the board and the adhesive, resulting in a strong bond for the decorative layer that is not easily detached. Moreover, the entire board has extremely low formaldehyde content and basically does not release formaldehyde or other harmful substances, making it safe and environmentally friendly, and suitable for making various types of furniture.

[0039] The calcium silicate board 1, which is made of magnetic fiber 4 and lightweight crack-resistant fiber 5, does not require a long-term pressure penetration treatment when applying adhesive. A simple grinding process is sufficient to expose part of the surface fiber. Through the connection and fixing effect of the fiber, its bonding ability with the adhesive is enhanced, and separation of adhesive and powder is avoided. This is like setting a large number of tiny connecting bridges on the surface of the calcium silicate board, which not only play a connecting role, but also play a role in distributing and dispersing the stress.

[0040] And the magnetic fiber 4 and the lightweight anti-cracking fiber 5 are located in the calcium silicate board body, improving the anti-cracking performance and durability of the calcium silicate board 1; the calcium silicate board 1 itself is made of a plurality of slurries and is a multi-phase heterogeneous material, if the fibers span across both ends of the crack and play a "bridging" role, the magnetic fiber 4 and the lightweight anti-cracking fiber 5 can transmit stress and thus delay and prevent further development of the crack; the presence of the magnetic fiber 4 and the lightweight anti-cracking fiber 5 can reduce the width of the crack and the generation of the crack, and also enhance the overall bending resistance, so that the calcium silicate board 1 is not so brittle. Since the calcium silicate board 1 itself has fireproof performance, the setting of the magnetic fiber 4 and the lightweight anti-cracking fiber 5 can further improve its high-temperature performance and it will not burst or produce toxic gas in a high-temperature or burning environment.

[0041] The magnetic fiber 4 and the lightweight anti-cracking fiber 5 are used in combination and both can exhibit anti-cracking performance, wherein the setting of the lightweight anti-cracking fiber 5 can balance the weight and neutralize the density, which is equivalent to lowering the overall density of the fiber by using low-density materials, so that the calcium silicate board 1 can maintain low density while adding magnetic fibers.

[0042] The magnetic fiber 4 has the following effects: on the one hand, in the process of forming the board, the distribution of the magnetic fiber in the surface layer of the board can be affected by the external magnetic field and magnetic force, so that the magnetic fiber has good directionality, such as being distributed horizontally or obliquely, so that it can better play an anti-cracking role, and the magnetic fiber can also be close to the surface layer and distributed more in the surface layer to facilitate the adhesion of the adhesive.

[0043] Through such a setting, the clamp plate with a calcium silicate board core is lighter, stronger and better in anti-cracking performance, the surface decorative layer is not easy to fall off, and there is no need to set too many layered structures, so the structure is simpler and thinner, and the economy and practicability are better.

[0044] Further, the magnetic fiber 4 and the lightweight anti-cracking fiber 5 both include long fibers and short fibers, and the average length of the fibers in the magnetic fiber 4 is greater than the average length of the fibers in the lightweight anti-cracking fiber 5.

[0045] The use of long and short fibers in combination can better enhance the bending resistance in each direction and cope with cracks in different directions. For example, under the action of magnetic force, short fibers can maintain horizontal distribution, which can better inhibit the generation and spread of surface cracks. Under the action of magnetic force, long fibers will form an inclined distribution, for example, one end of the long fiber is away from the surface, and this end is less affected by the magnetic force and basically does not move, while the end close to the surface will move under the action of magnetic force, thus forming long fibers inclined in the thickness direction, which can improve the overall connection strength and prevent through cracks, and the end of the long fiber close to the surface can be exposed.

[0046] Further, the total amount of the magnetic fiber 4 and the lightweight anti-crack fiber 5 added is 3% to 5% or 5% to 10% or 10 to 15% of the total weight of the calcium silicate board. By controlling different amounts, low-density calcium silicate boards (0.9 g / cm 3 ) and ultra-low-density calcium silicate boards (0.6 g / cm 3 ) can be obtained.

[0047] Further, the exposed size of the magnetic fiber 4 and the lightweight anti-crack fiber 5 is 0.1 mm, and does not exceed the thickness of the adhesive 3. A slight treatment is performed during the grinding process.

[0048] Further, the magnetic fiber 4 is a paramagnetic steel fiber, which is easy to be controlled by a magnetic field; the lightweight anti-crack fiber 5 is a carbon fiber, which is light in weight and high in strength and stability.

[0049] Further, the decorative layer 2 is a wood grain veneer.

[0050] Further, the adhesive 3 is one of polyvinyl acetate adhesive, isocyanate adhesive, formaldehyde-free resin and two-component polyurethane adhesive, which does not contain aldehyde substances and is safer.

[0051] Example Two:

[0052] A manufacturing method of an environmentally friendly furniture board with a built-in calcium silicate board core, comprising the following steps:

[0053] Step one, manufacturing a low-density calcium silicate board, wherein magnetic fibers 4 and lightweight anti-crack fibers 5 are added during the manufacturing process of the calcium silicate board 1, and the directionality of the magnetic fibers 4 on the surface is controlled by magnetic separation;

[0054] Step two, surface treatment of the batch-manufactured calcium silicate board 1, wherein the magnetic fibers 4 on the surface are exposed by grinding the calcium silicate board 1 with a grinding machine or fine-grit sandpaper, and the grinding thickness is not more than 1 mm;

[0055] Step three, press the decorative layer 2, take a decorative layer material on the workbench, on the decorative layer 2 coated adhesive 3, then the calcium silicate board 1 in step two horizontally placed on the decorative layer 2, then on the surface of the calcium silicate board 1 coated adhesive 3, then laid a layer of decorative layer 2, by pressing the way the three are pressed into shape.

[0056] Further, the calcium silicate board 1 is prepared by mixing light material, quartz sand tailings, calcium hydroxide, wollastonite, vermiculite powder, aluminum oxide, wood pulp, magnetic fibers and lightweight anti-cracking fibers, including beating, pulp, flow, curing, steam pressure, drying and polishing processes, the magnetic fibers and the lightweight anti-cracking fibers are added in the beating process, and the slurry is formed by using a mold forming plate in the flow forming process.

[0057] Specifically, the preparation method of the light material is as follows: open the stirring reaction kettle and water pump, put water, calcium oxide, diatomite and catalyst into the stirring reaction kettle respectively for stirring, wherein the silicon calcium ratio is controlled at 0.4-0.7, the water solid ratio is 13-18, and the catalyst addition amount is 0.4%-0.6%; close the feed valve and exhaust valve of the stirring reaction kettle, control the temperature rise at a rate of 2-3℃ per 2 minutes, and continue to heat to about 185℃, then close the steam valve, enter the heat preservation stage, and the heat preservation time is at least 7 hours; after heat preservation, start pressure relief, control the temperature drop at a rate of 2-3℃ per 2 minutes, when the pressure in the stirring reaction kettle is zero, start unloading, and the prepared light material is put into the intermediate storage barrel.

[0058] The preparation method uses calcium oxide and diatomite to produce light material, uses calcium oxide as raw material, and releases a large amount of heat value after water, so that the water temperature rises, and the steam consumption required during the reaction is saved. Diatomite is used as raw material, diatomite has high activity, the required temperature for silicon calcium reaction is low, and more tobermorite is generated at the same temperature than using quartz powder, so the density of the generated light material is lower (0.12-0.15g / cm 3 ) than the commonly used pre-material on the market (0.2-0.27g / cm 3 ), the density of the light material is low, so the addition amount is also less, which is conducive to the formula adjustment of the whole low-density fireproof plate, and can produce lower density plate. The generated light material is mainly a mixture of tobermorite and silicon calcium gel, and the tobermorite has the characteristics of light weight, fireproof, high temperature resistance, good heat and sound insulation effect, high strength and size stability.

[0059] The operation process of the beating is as follows: starting the mixing machine, opening the water valve to add, and according to the weight ratio of 10-15 parts of the light material, 5-10 parts of calcium hydroxide, 20-30 parts of quartz sand tailings, 1-5 parts of wollastonite, 3-5 parts of vermiculite powder, 5-7 parts of aluminum oxide, 8-10 parts of the wood pulp and 3-15 parts of the magnetic fiber and the light anti-cracking fiber (the fibers can be premixed), each raw material is sequentially added, preferably 5-10 parts of the fiber mixture; mixing and stirring for more than 4 minutes, opening the power of the pulp pump, and feeding the pulp into the headbox.

[0060] The beating method adds light material and fiber additives, and adjusts the content of other components. The light material can greatly reduce the density of the calcium silicate board, and can improve the fireproof, high temperature resistant, heat and sound insulation effects of the board, making the board structure more stable. By adding additives, the problem of reducing the density of the board while reducing the fireproof performance and anti-cracking performance and increasing the brittleness is solved. The low-density calcium silicate board has a density as low as 0.8 g / cm 3 The bending strength can reach more than 14 Mpa, the fire resistance limit is more than 4 hours, and the low density, high strength, fireproof and anti-cracking performance are combined.

[0061] In the process of flow slurry forming, the distribution of each component in the slurry, especially the distribution of the fiber material, can be improved by using the jolting device in the mold, so that the magnetic fiber 4 is in a movable state. Under the action of the magnetic field of the magnetic separation device, the magnetic fibers 4 on the upper and lower surfaces can move to change their directionality, so that they can be arranged obliquely, which not only enhances the anti-cracking performance, but also facilitates the exposure of the end of the magnetic fiber under slight polishing.

[0062] Further, as shown in Figure 4 The mold includes a lower mold 6 and an upper mold 7. The lower mold 6 is fixedly installed on the forming workbench, and the lower mold 6 is provided with a lower mold cavity 8. A plurality of electromagnets 9 are arranged in the lower mold cavity 8. The upper mold 7 is installed below the lifting mechanism, and the upper mold 7 is provided with an upper mold cavity 10. One side of the upper mold cavity 10 facing the lower mold is also provided with a plurality of electromagnets 9. A plurality of micro vibrators 11 are also installed in the upper mold cavity 10.

[0063] In the process of flow slurry forming or flow slurry laying, the jolting of the micro vibrator 11 and the magnetic force of the electromagnet 9 are adjusted synchronously, and the degree of integration is high. While ensuring the flatness, tightness and directionality of the magnetic fiber 4, the production difficulty is greatly reduced, and the production efficiency is improved. The directionality of the magnetic fiber 4 formed in this way is very good, and the directionality after magnetic separation is maintained after the calcium silicate board wet blank is condensed and fixed.

[0064] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A method for manufacturing an environmentally friendly furniture board with an embedded calcium silicate board core, characterized in that, Includes the following steps: Step 1: Fabrication of low-density calcium silicate board. During the fabrication process, magnetic fibers and lightweight crack-resistant fibers are added, and the orientation of the surface magnetic fibers is controlled by magnetic separation. The calcium silicate board is produced by mixing lightweight materials, quartz sand tailings, calcium hydroxide, wollastonite, vermiculite powder, alumina, wood pulp, magnetic fibers, and lightweight crack-resistant fibers. The process includes pulping, slurry feeding, flow molding, curing and demolding, autoclaving, drying, and polishing. The magnetic fibers and lightweight crack-resistant fibers are added during the pulping process. In the flow molding process, a mold is used to form the board blank, and the mold is equipped with a vibration device and a magnetic separator. The selected device; the ratio of the magnetic fiber to the lightweight crack-resistant fiber is 1:3 to 1:5, and the total amount of the magnetic fiber and the lightweight crack-resistant fiber added does not exceed 15% of the total weight of the calcium silicate board; the lightweight crack-resistant fiber is uniformly distributed in the calcium silicate board, and the magnetic fiber is directionally distributed in the calcium silicate board, with the number and directionality of the magnetic fibers near the two sides of the calcium silicate board being stronger than those in the middle; both the magnetic fiber and the lightweight crack-resistant fiber contain long fibers and short fibers, and the average fiber length in the magnetic fiber is greater than the average fiber length in the lightweight crack-resistant fiber; During the slurry forming process, the vibration compaction device in the mold is used to improve the distribution of each component in the slurry, so that the magnetic fibers are in a movable state; under the action of the magnetic field of the magnetic separator, the magnetic fibers on the upper and lower surfaces are moved to change their orientation, so that the short fibers in the magnetic fibers are kept in a transverse distribution, and the long fibers in the magnetic fibers are arranged obliquely along the thickness direction of the calcium silicate board. Step 2: Perform surface treatment on the batch-produced calcium silicate boards by using a grinding machine or fine sandpaper to polish the calcium silicate boards so that the magnetic fibers on the surface are exposed. The thickness of the polishing should not exceed 1mm. Step 3: Pressing the decorative layer. Take a decorative layer material and lay it flat on the workbench. Apply adhesive to the decorative layer, then place the calcium silicate board from Step 2 horizontally on the decorative layer. Apply adhesive to the surface of the calcium silicate board, and then lay another decorative layer. Press the three together to form the desired shape. The magnetic fibers near the surface, or the magnetic fibers together with the lightweight crack-resistant fibers, protrude from the surface of the calcium silicate board and connect with the adhesive.

2. The method for manufacturing environmentally friendly furniture board with an embedded calcium silicate board core according to claim 1, characterized in that, The mold includes a lower mold and an upper mold. The vibration device includes a micro vibrator, and the magnetic separation device is an electromagnet. The lower mold is fixedly installed on the workbench. The lower mold has a lower mold cavity. Several electromagnets are distributed in the lower mold cavity. The upper mold is installed below the lifting mechanism. The upper mold has an upper mold cavity. Several electromagnets are also provided on the side of the upper mold cavity facing the lower mold. Several micro vibrators are also installed at intervals in the upper mold cavity.

3. The method for manufacturing the environmentally friendly furniture board with an embedded calcium silicate board core according to claim 1, characterized in that, The total amount of the magnetic fiber and the lightweight crack-resistant fiber added is 3% to 5%, 5% to 10%, or 10% to 15% of the total weight of the calcium silicate board.

4. The method for manufacturing the environmentally friendly furniture board with an embedded calcium silicate board core according to claim 1, characterized in that, The exposed size of the magnetic fiber and / or the lightweight crack-resistant fiber is 0.01 to 1 mm, and does not exceed the thickness of the adhesive application.

5. The method for manufacturing the environmentally friendly furniture board with an embedded calcium silicate board core according to claim 1, characterized in that, The magnetic fiber is iron fiber or ferrite fiber, and the lightweight crack-resistant fiber is carbon fiber.

6. The method for manufacturing the environmentally friendly furniture board with an embedded calcium silicate board core according to claim 1, characterized in that, The decorative layer is wood veneer, bamboo veneer, or decorative film.

7. The method for manufacturing an environmentally friendly furniture board with an embedded calcium silicate board core according to claim 1, characterized in that, The adhesive is one of polyvinyl acetate adhesive, isocyanate adhesive, formaldehyde-free resin, and two-component polyurethane adhesive.

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