Preparation process of multilayer functional composite floor and veneer

Abstract

The invention belongs to the technical field of home decoration building materials, and relates to a preparation process of a multi-layer functional composite floor and veneer, which comprises the following steps: dipping decorative raw paper into wear-resistant coating decorative paper and veneer bond paper, and dipping balance raw paper into balance bond paper; three or more layers of plates made of different materials are coated, glued, assembled and pressed to form the base material layer, the plates are ultrathin moisture-proof fiber plates, inorganic straw plates, PVC (polyvinyl chloride) carbon crystal plates or plywood, the assembly positions of the ultrathin moisture-proof fiber plates are fixed on the uppermost layer and the lowermost layer of the base material layer, and the middle core layer is formed by assembling the plates made of different materials; a hot-pressing process; and curing and subsequent working procedures are carried out. The multi-layer composite floor and the veneer prepared according to the process are superior to common floors and veneers in dimensional stability, heat resistance, moisture resistance, fire resistance, corrosion resistance and the like, the cost is greatly reduced, and the additional value of products is obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of home decoration building materials, relates to home furnishings, and in particular to a preparation process of a multi-layer functional composite floor and a decorative panel. Background Art

[0002] With the rapid development of social economy, people have increasingly strict requirements on the quality of home decoration boards, and ordinary boards often cannot meet the requirements. At present, the commonly used base materials for flooring are density boards, plywood, and whole core boards, while the base materials for decorative panels are mainly particle boards, plywood, density boards, solid wood boards, etc. In addition, there are some emerging boards, such as PVC carbon crystal boards, inorganic straw boards, and aluminum honeycomb boards. The above single-material base materials may have some deficiencies in individual performance, such as poor bending resistance of plywood; difficult to control free formaldehyde in particle boards and density boards; and easy cracking and deformation of whole core boards.

[0003] The composite board made of multiple materials is superior to ordinary boards in terms of dimensional stability, heat and moisture resistance, bending deformation resistance, formaldehyde emission, etc. As the most common finishing material at present, impregnated film paper has the advantages of wear resistance, scratch resistance, low price, rich surface patterns, etc. After being pressed with multi-layer composite substrates, it can be widely used in the field of flooring or decorative panels. Summary of the invention

[0004] In order to overcome the problems commonly existing in the prior art of boards with a single material and structure, such as poor dimensional stability, easy warping and deformation, and high formaldehyde emission, the present invention provides a preparation process of a multi-layer functional composite floor and a decorative panel.

[0005] Technical Solution

[0006] A preparation process of a multi-layer functional composite floor and a decorative panel comprises the following steps:

[0007] A. Decorative base paper becomes wear-resistant coated decorative paper and facing film paper after being dipped in glue, and balanced base paper becomes balanced film paper after being dipped in glue;

[0008] B. Three or more layers of boards of different materials are coated with glue, assembled and pressed to form a substrate layer, wherein the board is an ultra-thin moisture-proof fiberboard, an inorganic straw board, a PVC carbon crystal board or a plywood, wherein the assembly position of the ultra-thin moisture-proof fiberboard is fixed at the uppermost layer and the lowermost layer of the substrate layer, and the middle core layer is assembled by boards of different materials;

[0009] C. Hot pressing process, according to different products, is divided into two categories:

[0010] Flooring: The upper surface of the multi-layer substrate is paved with wear-resistant coated paper, and the lower surface is paved with balanced film paper, which is hot-pressed in a short-cycle press;

[0011] Decorative panels: The upper and lower surfaces of the multi-layer substrate are covered with decorative film paper, and hot-pressed in a short-cycle press;

[0012] D. Health care and post-processing are divided into two categories according to different products:

[0013] Flooring: cutting, grooving, packaging;

[0014] Veneer panels: stacking and palletizing.

[0015] In a preferred disclosed embodiment of the present invention, in step A, the weight of the decorative base paper is 70-100 g, and the glue amount of the wear-resistant coated paper is 150-160 g / m 2 The glue amount of the facing film paper is 120~130g / m 2 The balance paper base paper is 50-80g, and the balance film paper glue amount is 140-150g / m 2 .

[0016] According to a preferred disclosed example of the present invention, in step B, the assembly method includes, from top to bottom, three layers: ultra-thin moisture-proof fiberboard + inorganic straw board / PVC carbon crystal board / plywood + ultra-thin moisture-proof fiberboard; four layers: ultra-thin moisture-proof fiberboard + any two combinations of inorganic straw board / PVC carbon crystal board / plywood + ultra-thin moisture-proof fiberboard; five layers: ultra-thin moisture-proof fiberboard + inorganic straw board + PVC carbon crystal board + plywood + ultra-thin moisture-proof fiberboard, and the positions of the middle three layers can be adjusted arbitrarily.

[0017] In the preferred disclosed embodiment of the present invention, in step B, the glue used for gluing is PUR hot melt glue, and the glue application amount is 50-100 g / m 2 , evenly coated on the surface of each layer of board, the temperature during pressing is 120-140℃, the time is 2-4min, and the pressure is 10-20kg / cm 2 The thickness of the ultra-thin moisture-proof density board is 1 to 3 mm, and the thickness of the inorganic straw board, PVC carbon crystal board and plywood is 5 to 20 mm.

[0018] Furthermore, the ultra-thin moisture-proof density board, by adding 1 to 3% of graphene to the density board raw material, is superior to ordinary density boards in terms of dimensional stability, water absorption thickness expansion rate, formaldehyde emission, etc.

[0019] Furthermore, the PVC carbon crystal board, also known as polyvinyl chloride foam board, is a fireproof lightweight decoration material, widely used in indoor partitions, roof insulation, air conditioning engineering packaging, etc., and has the characteristics of moisture-proof, weather-resistant, impact-resistant, heat-insulating, acid and alkali corrosion-resistant, and flame-resistant.

[0020] Furthermore, the inorganic straw board is made of straw (wheat straw, corn straw, rice straw, etc.) as raw material and inorganic substances such as magnesium oxide, magnesium sulfate, magnesium chloride as fillers, and is prepared by cold pressing. Compared with traditional fiberboard, it has lower formaldehyde emission, improved mechanical properties and waterproof properties. In addition, the utilization of waste materials such as straw is also in line with the current concept of green environmental protection and sustainable development.

[0021] In the preferred disclosed embodiment of the present invention, in step C, the pressing parameters of the floor product are temperature 160-180°C, pressing time 30-40s, and pressure 25-30kg / cm 2 The pressing parameters of the veneer products are temperature 180-200℃, pressing time 25-30s, and pressure 15-25kg / cm 2 .

[0022] In a preferred disclosed example of the present invention, in step D, the curing is to place the plate at room temperature for 3 to 5 days, which serves to balance the moisture content inside the plate, release internal stress, and reduce problems such as warping and deformation of the plate.

[0023] According to a preferred disclosed example of the present invention, in step D, the floor cutting method is staggered sawing; the milling groove buckle type is a U-lock buckle or a flat buckle; the packaging is that the floor is put into a paper box, and the floor is packed into a whole pallet using packing tape, wrapping film, and a pallet, which is convenient for subsequent storage and transportation; the decorative panel is packed into a whole pallet using plastic corner protectors, packing tape, packaging film, and protective board auxiliary materials, which is convenient for subsequent storage and transportation.

[0024] Beneficial Effects

[0025] The functional sheet materials used in the present invention are ultra-thin moisture-proof density board, PVC carbon crystal board, inorganic straw board, and multi-layer plywood. Among them, the ultra-thin moisture-proof density board has better waterproof performance and mechanical strength than ordinary density board. It is located in the top and bottom layers of the substrate, which can not only cover the surface defects of the core layer board and improve the flatness of the board surface, but also enhance the bonding strength between the film paper and the substrate; multi-layer plywood, as a more commonly used substrate, has the advantages of high strength, good dimensional stability, and green environmental protection; PVC carbon crystal board has the advantages of light weight, high strength, sound insulation, heat insulation, and high flame retardancy; inorganic straw board conforms to the current green environmental protection concept of waste utilization and sustainable development. The above common substrates and functional panels are compositely pressed to form a substrate body with at least three layers of structure. At the same time, according to the needs, suitable wear-resistant decorative paper or facing decorative paper is selected to give the product surface characteristics and improve the product expression. The multi-layer composite floor and decorative panels prepared in this way are superior to ordinary floors and decorative panels in terms of dimensional stability, heat and moisture resistance, fire retardancy, corrosion resistance, etc., and the cost is greatly reduced, and the added value of the products is significantly improved. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the embodiments so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0027] Example 1

[0028] A preparation process of a multi-layer functional composite floor comprises the following steps:

[0029] A. Decorative base paper is dipped into wear-resistant coated decorative paper, and balancing base paper is dipped into balancing film paper, wherein the weight of the decorative base paper is 70g, and the glue amount of the wear-resistant coated paper is 150g / m 2 The weight of the balanced paper base is 50g, and the glue weight of the balanced film paper is 140g / m 2 ;

[0030] B. Glue is applied on the surface of each substrate layer, and then the ultra-thin moisture-proof density board, inorganic straw board, and ultra-thin moisture-proof density board are assembled and pressed in the order from top to bottom. The glue is PUR hot melt adhesive, and the amount of glue applied is 50g / m 2 The ultra-thin moisture-proof density board is added with 2% graphene, with a thickness of 1mm, and the inorganic straw board is 8mm thick; the pressing temperature is 130℃, the time is 2min, and the pressure is 10kg / cm 2 ;

[0031] C. Wear-resistant coated adhesive paper is laid on the upper surface of the assembled and pressed multi-layer substrate layer, and balanced adhesive film paper is laid on the lower surface, and hot pressing is performed in a short-cycle press, wherein the hot pressing parameters are temperature 160°C, pressing time 30s, and pressure 25kg / cm 2 ;

[0032] D. After hot pressing, the boards are taken out, cooled and stacked, cured for 3 days, and then cut and milled to make the floor.

[0033] The multi-layer functional composite floor prepared in this embodiment has relevant performance indicators as shown in Table 1.

[0034] Table 1

[0035]

[0036] Example 2

[0037] A preparation process of a multi-layer functional composite veneer panel comprises the following steps:

[0038] A. Decorative base paper is impregnated with glue to become decorative film paper. The weight of the decorative base paper is 80g, and the glue amount of the decorative film paper is 120g / m 2 ;

[0039] B. Glue is applied on the surface of each substrate layer, and then the ultra-thin moisture-proof density board, PVC carbon crystal board, and ultra-thin moisture-proof density board are assembled and pressed in the order from top to bottom. The glue is PUR hot melt adhesive, and the amount of glue applied is 60g / m 2 The ultra-thin moisture-proof density board is added with 1% graphene, with a thickness of 2mm, and the thickness of the PVC carbon crystal board is 10mm; the pressing temperature is 120℃, the time is 2min, and the pressure is 10kg / cm 2 ;

[0040] C. Decorative film paper is evenly laid on the upper and lower surfaces of the assembled and pressed multi-layer substrate layer, and hot pressing is performed in a short-cycle press, wherein the hot pressing parameters are temperature 180°C, pressing time 25s, pressure 15kg / cm 2 ;

[0041] D. After hot pressing, the boards are taken out and packaged into pallets after cooling and stacking.

[0042] The multi-layer functional composite decorative panel prepared in this embodiment has been tested and its relevant performance indicators are shown in Table 2.

[0043] Table 2

[0044]

[0045] Example 3

[0046] A preparation process of a multi-layer functional composite floor comprises the following steps:

[0047] A. Decorative base paper is dipped into wear-resistant coated decorative paper, and balancing base paper is dipped into balancing glue film paper, wherein the weight of the decorative base paper is 75g, and the glue amount of the wear-resistant coated paper is 160g / m 2 The weight of the base paper of the balanced paper is 70g, and the glue amount of the balanced film paper is 150g / m 2 ;

[0048] B. Glue is applied on the surface of each substrate layer, and then the ultra-thin moisture-proof density board, plywood, PVC carbon crystal board, and ultra-thin moisture-proof density board are assembled and pressed in the order from top to bottom. The glue is PUR hot melt adhesive, and the amount of glue applied is 80g / m 2 The ultra-thin moisture-proof density board is added with 3% graphene, with a thickness of 1mm, and the thickness of the plywood and PVC carbon crystal board are both 6mm; the pressing temperature is 140℃, the time is 3min, and the pressure is 20kg / cm 2 ;

[0049] C. Wear-resistant coated adhesive paper is laid on the upper surface of the assembled and pressed multi-layer substrate layer, and balanced adhesive film paper is laid on the lower surface, and hot pressing is performed in a short-cycle press, wherein the hot pressing parameters are temperature 180°C, pressing time 35s, and pressure 20kg / cm 2 ;

[0050] D. After hot pressing, the boards are taken out, cooled and stacked, cured for 5 days, and then cut and milled to make the floor.

[0051] The multi-layer functional composite floor prepared in this embodiment has relevant performance indicators as shown in Table 3.

[0052] Table 3

[0053]

[0054] Example 4

[0055] A preparation process of a multi-layer functional composite veneer panel comprises the following steps:

[0056] A. Decorative base paper is impregnated with glue to become decorative film paper. The weight of the decorative base paper is 100g, and the glue amount of the decorative film paper is 130g / m 2 ;

[0057] B. Glue is applied on the surface of each substrate layer, and then the ultra-thin moisture-proof density board, PVC carbon crystal board, plywood, inorganic straw board, and ultra-thin moisture-proof density board are assembled and pressed in the order from top to bottom. The glue is PUR hot melt adhesive, and the amount of glue applied is 90g / m 2 The ultra-thin moisture-proof density board is added with 2% graphene, with a thickness of 3mm. The thickness of PVC carbon crystal board, plywood and inorganic straw board are all 5mm. The pressing temperature is 140℃, the time is 3min, and the pressure is 15kg / cm 2 ;

[0058] C. Decorative film paper is evenly spread on the upper and lower surfaces of the assembled and pressed multi-layer substrate layer, and hot pressing is performed in a short-cycle press, wherein the hot pressing parameters are temperature 200°C, pressing time 30s, and pressure 20kg / cm 2 ;

[0059] D. After hot pressing, the boards are taken out and packaged into pallets after cooling and stacking.

[0060] The multi-layer functional composite decorative panel prepared in this embodiment has been tested and its relevant performance indicators are shown in Table 4.

[0061] Table 4

[0062]

[0063] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the specification of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A process for preparing a multi-layer functional composite floor and a decorative panel, characterized in that: The steps include: A. Decorative base paper becomes wear-resistant coated decorative paper and facing film paper after being dipped in glue, and balanced base paper becomes balanced film paper after being dipped in glue; B. Three or more layers of boards of different materials are coated with glue, assembled and pressed to form a substrate layer, wherein the board is an ultra-thin moisture-proof fiberboard, an inorganic straw board, a PVC carbon crystal board or a plywood, wherein the assembly position of the ultra-thin moisture-proof fiberboard is fixed at the uppermost layer and the lowermost layer of the substrate layer, and the middle core layer is assembled by boards of different materials; C. Hot pressing process, according to different products, is divided into two categories: Flooring: The upper surface of the multi-layer substrate is paved with wear-resistant coated paper, and the lower surface is paved with balanced film paper, which is hot-pressed in a short-cycle press; Decorative panels: The upper and lower surfaces of the multi-layer substrate are covered with decorative film paper, and hot-pressed in a short-cycle press; D. Health care and post-processing are divided into two categories according to different products: Flooring: cutting, grooving, packaging; Veneer panels: stacking and palletizing.

2. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step A, the weight of the decorative base paper is 70-100 g, and the glue amount of the wear-resistant coated paper is 150-160 g / m 2 The glue amount of the facing film paper is 120~130g / m 2 The balance paper base paper is 50-80g, and the balance film paper glue amount is 140-150g / m 2 .

3. The preparation process of the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step B, the assembly method includes three layers from top to bottom: ultra-thin moisture-proof fiberboard + inorganic straw board / PVC carbon crystal board / plywood + ultra-thin moisture-proof fiberboard; Four layers: ultra-thin moisture-proof fiberboard + any combination of inorganic straw board / PVC carbon crystal board / plywood + ultra-thin moisture-proof fiberboard; Five layers: ultra-thin moisture-proof fiberboard + inorganic straw board + PVC carbon crystal board + plywood + ultra-thin moisture-proof fiberboard. The positions of the middle three layers can be adjusted at will.

4. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step B, the glue used for gluing is PUR hot melt glue, and the glue application amount is 50-100g / m 2 , evenly coated on the surface of each layer of board, the temperature during pressing is 120-140℃, the time is 2-4min, and the pressure is 10-20kg / cm 2 The thickness of the ultra-thin moisture-proof density board is 1-3 mm, and the thickness of the inorganic straw board, PVC carbon crystal board and plywood is 5-20 mm.

5. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step B, the ultra-thin moisture-proof density board is prepared by adding 1 to 3% of graphene to the density board raw material.

6. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step B, the PVC carbon crystal board is also known as polyvinyl chloride foam board.

7. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step B, the inorganic straw board is prepared by cold pressing using straw as raw material and inorganic substances such as magnesium oxide, magnesium sulfate, and magnesium chloride as fillers.

8. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step C, the pressing parameters of the floor product are temperature 160-180°C, pressing time 30-40s, and pressure 25-30kg / cm 2 The pressing parameters of the veneer products are temperature 180-200℃, pressing time 25-30s, and pressure 15-25kg / cm 2 .

9. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step D, the health preservation is to place it at room temperature for 3 to 5 days.

10. The process for preparing the multi-layer functional composite floor and decorative panel according to claim 1, characterized in that: In step D, the floor cutting method is staggered sawing; the milling groove buckle type is Youling lock buckle or flat buckle; the packaging is that the floor is put into a paper box, and the floor is packed into a whole pallet using packing tape, wrapping film, and pallet, which is convenient for subsequent storage and transportation; the decorative panel is packed into a whole pallet using plastic corner protectors, packing tape, packaging film, and protective board auxiliary materials, which is convenient for subsequent storage and transportation.

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