CN115847566A - Preparation method of material-saving and energy-saving three-layer solid wood composite floor - Google Patents
Preparation method of material-saving and energy-saving three-layer solid wood composite floor Download PDFInfo
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- CN115847566A CN115847566A CN202211346984.XA CN202211346984A CN115847566A CN 115847566 A CN115847566 A CN 115847566A CN 202211346984 A CN202211346984 A CN 202211346984A CN 115847566 A CN115847566 A CN 115847566A
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Abstract
The invention belongs to the technical field of building auxiliary materials, and relates to a method for preparing a material-saving and energy-saving three-layer solid wood composite floor. The invention adopts the radiata pine lath as the core board of the three-layer solid wood composite floor, can save materials and energy, improve the elasticity of the floor, reduce the production cost, use the compression radiata pine sheet of unilateral superficial layer as the surface board, and roll coat wear-resisting paint on the superficial layer of the floor, can compensate the soft defect of radiata pine material, improve surface wearability and hardness, improve the durability of the floor, and because the growth cycle of radiata pine is short, the raw materials are low in price, the three-layer solid wood composite floor of radiata pine prepared can greatly increase the economic benefits and social benefits of enterprises.
Description
Technical Field
The invention belongs to the technical field of building auxiliary materials, relates to a floor, and particularly relates to a preparation method of a material-saving and energy-saving three-layer solid wood composite floor.
Background
With the rapid decrease of the global natural forest resources, the wood processing industry has the phenomenon of increasing shortage of raw materials. The wood floor is used as an important decorative material for interior decoration, and the market demand of the wood floor is increasing. In order to solve the contradiction between supply and demand of wood, the fast-growing artificial forest mainly comprising poplar and radiata pine is planted vigorously at home and abroad, and the vacancy of wood resources is filled.
In the domestic market, the solid wood composite floor is the fastest-developing product in the floor industry, and the solid wood composite floor is divided into a three-layer solid wood composite floor and a multi-layer solid wood composite floor. At present, the three-layer solid wood composite surface plate mainly uses broad-leaved hardwood, but the hardwood has long growth period and limited resources, and the price cost is higher and higher along with the limitation of imported wood resources, thereby becoming a bottleneck restricting the development of enterprises. The core board is mainly made of European white pine and the like, but the growth cycle of the European white pine is long, the price cost is gradually improved along with the limitation of imported wood resources, and the overall economic benefit is poor.
Pinus radiata, the name of wood, hardwood pine (school name: pinus radiata), is a plant of the Pinaceae, pinus genus, an evergreen arbor. The tree species is the main conifer species of the national artificial forest of Chilean, new Zealand, australia and the like, the growth is fast, the height is about 25m, and the diameter at breast height can reach 0.7m. Is mainly imported from New Zealand, and has large quantity. Macrostructure, namely, the early and late timbers are changed suddenly, the annual rings of immature timbers are wider, and the late timbers are low; the annual rings of the mature timber section are narrow, and the late timber rate is high. The axial resin passage is obvious, large and much under the magnifier and is a small black hole. The wood ray magnifier can be seen under the wood ray magnifier, and is slightly dense and very narrow. Wood properties: brittle, coarse and uniform structure and slightly low strength. Easy processing, smooth section, good rotary cutting performance, strong degreasing force, long fiber and corrosion resistance. Easily warped when dried and having an air-dry density of about 0.48g/cm 3 . The wood-plastic composite board is suitable for rotary-cut veneers, plywood, packaging materials, building materials, shaving boards, fiber boards, wood chips and paper making, and can be used for furniture in a small amount.
The radiation loose board strips are used as the core layer of the three-layer solid wood composite floor, so that the material forming period of raw materials can be shortened, the production cost can be reduced, the elasticity of the floor can be improved, and the mechanical property of the floor can be ensured. If the single-side surface layer compressed radiata pine sheet is used as the surface plate, precious hardwood resources can be greatly saved, and because the radiata pine material is soft and has low density, the upper surface layer of the radiata pine sheet on the surface layer of the floor can be compressed, and the surface density is improved to 0.6-0.65 kg/m 3 And simultaneously combining roller coating abrasion-resistant paint and hardening primer to increase the surface abrasion resistance and hardness.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to disclose a preparation method of a material-saving and energy-saving three-layer solid wood composite floor.
A method for preparing a material-saving and energy-saving three-layer solid wood composite floor comprises the steps of compressing a radiata pine sheet on a single surface layer to form a surface plate, using a common radiata pine batten to form a core plate, using a radiata pine veneer to form a bottom plate, performing surface layer single-side compression, assembly, gluing, hot-press gluing, cooling and sanding to obtain a crude product, and performing a painting process to obtain the material-saving and energy-saving three-layer solid wood composite floor.
In a preferred disclosed embodiment of the invention, the radiata pine sheet compressed on the surface layer at one side is obtained by sawing radiata pine into sheets with the thickness of 3.2-4 mm and the water content of 7-12%, preferably 10%, and then sending the sheets into a hot press for hot pressing, wherein the temperature of an upper press plate is 140-160 ℃, preferably 150 ℃, the temperature of a lower press plate is normal temperature, the preheating time is 2-60 s, preferably 30s, and the closing time of the upper press plate and the lower press plate is 15-300 s, preferably 150s.
In a better disclosed embodiment of the invention, the radiata pine batten is obtained by sawing radiata pine into a plate, then planing and sawing the plate into battens with the width of 20-50 mm and the thickness of 8-10 mm, and the water content is 8-12%; furthermore, the side of the radiata pine laths is spliced to form a core plate, and the gap between the laths is not more than 1mm.
In the preferred embodiment of the invention, the single-side surface layer is compressed and assembled by the radiata pine thin plate, the common radiata pine lath and the radiata pine single plate and is glued, the used adhesive is a bi-component polyurethane adhesive, and the gluing amount of the surface plate and the bottom plate is 160-200 g/m 2 The pressure during hot pressing is 9-11 kg/cm 2 The hot pressing temperature is 80-85 ℃, the hot pressing time is 5-7 min, and the heat preservation is carried out for 2-5 d after the hot pressing is finished so as to reduce the deformation.
In a better disclosed embodiment of the invention, the base plate of the split floor is sanded, and then the surface plate is subjected to coarse sanding and fine sanding for two times.
In a preferred embodiment of the present invention, the painting process comprises the following steps: roller coating of water-based primer, roller coating of hard primer, roller coating of wear-resistant primer, roller coating of finish paint and roller coating of finish paint. The hard primer and the wear-resistant primer are added to the single-side surface layer of the radiata pine sheet and the surface layer of the floor by roller coating, so that the hardness and the wear resistance of the surface of the floor are improved, and the service life of the floor is prolonged.
The invention adopts the radiata pine as the surface layer, the core layer and the back layer of the three-layer solid wood composite floor, which is beneficial to shortening the growth period of raw materials, reducing the production cost, improving the economic benefit, increasing the elasticity of the floor and simultaneously ensuring the mechanical property and the dimensional stability of the floor.
Advantageous effects
The invention takes the radiata pine lath as the core board of the three-layer solid wood composite floor, can save materials and energy, improve the elasticity of the floor, reduce the production cost, use the unilateral superficial layer to compress the radiata pine sheet as the surface board, and roll coat the wear-resisting paint on the superficial layer of the floor, can compensate the soft defect of the radiata pine material, improve the surface wearability and hardness, improve the durability of the floor, and because the radiata pine growth cycle is short, the raw materials are low in price, the three-layer solid wood composite floor of radiata pine prepared can greatly increase the economic benefits and social benefits of enterprises. Compared with the integral compression of the solid wood floor, the energy is saved, the floor elasticity is improved, the surface wear resistance of the floor is improved, the surface hardness of the floor is improved on the premise that the density of the surface plate is also improved, the preparation method is simple, and the preparation cost is low.
Detailed Description
The present invention will be described in detail below with reference to examples to enable those skilled in the art to better understand the present invention, but the present invention is not limited to the following examples.
A preparation method of a material-saving and energy-saving three-layer solid wood composite floor comprises the following steps:
1. preparing a single-side surface layer compression radiata pine sheet: sawing the radiata pine into thin plates with the thickness of 3.2mm and the water content of 7-10%, and then sending the thin plates into a hot press for hot pressing, wherein the temperature of an upper press plate is 150 ℃, the temperature of a lower press plate is normal temperature, the preheating time is 30s, and the closing time of the upper press plate and the lower press plate is 150s.
2. Preparing raw materials: the surface plate is a sawed single-layer surface layer compressed radiata pine sheet with the water content of 7-12%, the thickness is 3.2-4 mm, the core plate is a radiata pine lath with the thickness of 8-10 mm, the width of 20-50 mm and the water content of about 8-12%, the bottom plate is a radiata pine rotary-cut single plate with the thickness of 2mm and the water content of 6-9%;
3. gluing: selecting bi-component polyurethane adhesive to glue the surface plate and the bottom plate, wherein the glue spreading amount is 160-200 g/m 2 ；
4. Assembling: and assembling the glued surface plate, the core plate and the bottom plate, wherein the gap between the radials loose strips of the core plate is not more than 1mm. Aging for 5-10 min after assembly;
5. hot pressing: adopts a hot pressing process, and the hot pressing pressure is 9-11 kg/cm 2 The hot pressing temperature is 80-85 ℃, and the hot pressing time is 5-7 min;
6. and (3) aging: the aging time is 2-5 days;
7. subdividing: sawing the floor according to the specification;
8. sanding: firstly, sanding the back plate of a floor blank plate in a fixed thickness, then performing primary coarse sanding on the surface plate, and finally performing fine sanding on the surface plate, wherein the fine sanding of the surface plate is quantitative sanding;
9. tenoning: carrying out lock catch processing on the floor by adopting a production line subjected to longitudinal double-end milling and transverse double-end milling;
10. painting: the paint process adopts a paint process of coating water-based primer on the surface layer of the floor in three times and coating finish paint in two times, wherein the water-based primer is coated on the surface layer of the floor in a roller way, the hardened primer is coated in a roller way after infrared drying, the wear-resistant primer is coated in a roller way after UV drying, and the finish paint is coated in a roller way after twice UV drying.
The thickness of the finished floor is 13-15 mm.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (8)
1. A preparation method of a material-saving and energy-saving three-layer solid wood composite floor is characterized by comprising the following steps: the method comprises the following steps of preparing a rough product by using a single-side surface layer compression radiata pine sheet as a surface plate, a common radiata pine batten as a core plate and a radiata pine veneer as a bottom plate through the procedures of single-side surface layer compression, assembly, gluing, hot-press gluing, cooling and sanding, and then performing a painting procedure to obtain the product.
2. The method for preparing the material-saving and energy-saving three-layer solid wood composite floor as claimed in claim 1, wherein the method comprises the following steps: the single-side surface layer compressed radiata pine sheet is prepared by sawing radiata pine into sheets with the thickness of 3.2-4 mm and the water content of 7-12%, and then sending the sheets into a hot press for hot pressing, wherein the temperature of an upper press plate is 140-160 ℃, the temperature of a lower press plate is normal temperature, the preheating time is 2-60 s, and the closing time of the upper press plate and the lower press plate is 15-300 s.
3. The method for preparing the material-saving and energy-saving three-layer solid wood composite floor as claimed in claim 2, wherein the method comprises the following steps: the water content is 10%, the temperature of the upper pressing plate is 150 ℃, the preheating time is 30s, and the closing time of the upper pressing plate and the lower pressing plate is 150s.
4. The method for preparing the material-saving and energy-saving three-layer solid wood composite floor as claimed in claim 1, wherein the method comprises the following steps: the radiata pine lath is obtained by sawing radiata pine into a plate, planing and sawing the plate into laths with the width of 20-50 mm and the thickness of 8-10 mm, and the water content is 8-12%.
5. The method for preparing the material-saving and energy-saving three-layer solid wood composite floor as claimed in claim 1, wherein the method comprises the following steps: the common radiata pine laths are taken as a core board, the radiata pine laths are spliced at the sides to be taken as the core board, and the gap between the laths is not more than 1mm.
6. The method for preparing the material-saving and energy-saving three-layer solid wood composite floor as claimed in claim 1, wherein the method comprises the following steps: the assembly of the single-side surface layer compressed radiata pine thin plate, the common radiata pine lath and the radiata pine single plate is glued, the used adhesive is a bi-component polyurethane adhesive, and the gluing amount of the surface plate and the bottom plate is 160-200 g/m 2 The pressure during hot pressing is 9-11 kg/cm 2 The hot pressing temperature is 80-85 ℃, the hot pressing time is 5-7 min, and the health preservation is needed for 2-5 d after the hot pressing is finished.
7. The method for preparing the material-saving and energy-saving three-layer solid wood composite floor as claimed in claim 1, wherein the method comprises the following steps: and sanding the bottom plate of the split floor, and then performing coarse sanding and fine sanding on the floor for two times.
8. The method for preparing the material-saving and energy-saving three-layer solid wood composite floor as claimed in claim 1, wherein the method comprises the following steps: the paint process comprises the following steps: roller coating of water-based primer, roller coating of hard primer, roller coating of wear-resistant primer, roller coating of finish paint and roller coating of finish paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211346984.XA CN115847566A (en) | 2022-10-31 | 2022-10-31 | Preparation method of material-saving and energy-saving three-layer solid wood composite floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211346984.XA CN115847566A (en) | 2022-10-31 | 2022-10-31 | Preparation method of material-saving and energy-saving three-layer solid wood composite floor |
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| Publication Number | Publication Date |
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| CN115847566A true CN115847566A (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211346984.XA Pending CN115847566A (en) | 2022-10-31 | 2022-10-31 | Preparation method of material-saving and energy-saving three-layer solid wood composite floor |
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| CN (1) | CN115847566A (en) |
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- 2022-10-31 CN CN202211346984.XA patent/CN115847566A/en active Pending
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