阅读说明：本技术 一种贴有天然名贵木皮层的实木复合地板及生产工艺 (Solid wood composite floor pasted with natural rare wood skin layer and production process ) 是由 葛立军 苏小营 霍子微 郎需斌 国春旭 于 2020-05-09 设计创作，主要内容包括：本发明公开了一种贴有天然名贵木皮层的实木复合地板及生产工艺,包括多层板材结构,所述多层板材结构由单层板材结构上下复合而成,所述单层板材结构由小径原木构成,所述小径原木为半正六棱柱体结构,其生产工艺包括截断去弯、去皮、蒸煮软化、整形、定形、干燥、木料加工、涂胶组坯、板材加工等步骤；本发明的优点在于：不但提高了产品档次,而且产品结构强度高,不易磨损,延长了使用寿命。(The invention discloses a solid wood composite floor stuck with natural rare wood skins and a production process, the solid wood composite floor comprises a multilayer board structure, the multilayer board structure is formed by compounding a single-layer board structure from top to bottom, the single-layer board structure is formed by small-diameter logs, the small-diameter logs are in a semi-regular hexagonal prism structure, and the production process comprises the steps of cutting off and removing bends, peeling, stewing and softening, shaping, drying, wood processing, gluing and assembling, board processing and the like; the invention has the advantages that: not only improves the grade of the product, but also has high structural strength, is not easy to wear and prolongs the service life.)

1. The utility model provides a solid wood composite floor who pastes natural rare wood cortex which characterized in that: the anti-moisture fabric comprises a base material layer, wherein the base material layer is an artificial board, the thickness of the base material layer of the artificial board is 7-15 mm, and the base material layer is a multilayer plywood or a high-density moisture-proof fiber laminated board; the multilayer plywood is formed by alternately pressing and pasting fast growing wood veneers; the high-density moisture-proof fiber laminated board is a high-density moisture-proof fiber board, and a single board is attached to the back of the high-density moisture-proof fiber laminated board;

the natural rare decorative veneer layer is pasted on the base material layer, the anti-cracking glue layer is coated on the surface of the veneer layer, and the transparent UV paint protective layer is coated on the surface of the veneer layer coated with the glue layer.

2. The solid wood composite floor stuck with the natural rare wood skin according to the claim 1, is characterized in that: the longitudinal and transverse sides of the solid wood composite floor are respectively provided with a tenon and a groove which are matched with each other.

3. The solid wood composite floor stuck with the natural rare wood skin according to the claim 1, is characterized in that: wear-resistant particles are added into the transparent UV paint protective layer, and comprise one or more of alumina materials, silicon carbide, diamonds and silicon oxide, and the mass percentage of the wear-resistant particles is about 0.5-10% of that of the transparent UV paint protective layer; the wear-resistant particles are uniformly dispersed in the transparent UV paint protective layer in an average particle size of 5-50 mu m.

4. The solid wood composite floor stuck with the natural rare wood skin according to the claim 1, is characterized in that: the transparent UV paint protective layer is composed of a plurality of coatings, the thickness of the transparent UV paint protective layer is 200-400 mu m, the optimal thickness is 300-400 mu m, and the hardness of a paint film is larger than or equal to 5H.

5. The solid wood composite floor stuck with the natural rare wood skin according to claim 4, characterized in that: and the upper surface of the transparent UV paint protective layer is also sprayed with a transparent nano anti-fouling coating.

6. A process for manufacturing a solid wood composite floor veneered with a natural precious wood skin according to any one of claims 1-5, comprising the steps of:

(1) selecting materials, namely selecting rare solid wood, which has good slicing performance and hardness which cannot be too high and is black walnut, teak, sapelli and Brazilian rose;

(2) cooking, namely cooking the selected rare solid wood species raw material at the temperature of 120 ℃ for 30-45 minutes;

(3) balancing, namely stacking and banding the well-shaped noble wood, putting the noble wood into a drying kiln for balancing until the moisture content is 6-9%, and releasing stress;

(4) slicing and cutting the square timber, slicing the balanced valuable timber to the required thickness, and then cutting the timber to the required size to obtain the square timber;

(5) cutting veneers, namely cutting the wood squares of the rare wood obtained in the step (4) into thin wood veneers, cutting the thin wood veneers to the required thickness, and cutting the thin wood veneers into required sizes;

(6) hot pressing the veneers, namely gluing the square wood obtained in the step (4) and the wood skin obtained in the step (5) with a modified urea-formaldehyde resin adhesive to ensure that the wood skin and a substrate layer such as a multilayer plywood are glued, wherein the glue applying amount is 140-²Pre-pressing for 30min at 12MPa to pre-cure the adhesive;

hot pressing at the pressure of 12-14MPa and the temperature of 115-125 ℃ for 5-6 min;

(7) anti-cracking treatment, namely uniformly coating an anti-cracking glue layer on the upper surface of the decorative wood veneer layer of the pre-pressed plate blank, brushing and brushing for 1-2 times by using a roller, standing for 1-2 hours after glue coating, and flattening and completely covering the plate blank by using a high-temperature resistant film;

(8) performing secondary balance, namely placing the pressed and pasted product in a balance room with the temperature of 25 ℃ and the relative humidity of 35-45% for curing for 48 h;

(9) repairing, namely repairing the crack of the board surface by using R810AB two-component black atomic ash, and storing for 6-8 h;

(10) cutting, namely cutting the repaired semi-finished product obtained in the step (9), cutting by a multi-blade saw, sanding the back surface of the semi-finished product, and making a plain plate with a fixed thickness;

(11) curing for 7 days in an environment with the temperature of 40 ℃ and the humidity of 60%;

(12) coating a primer by UV, roller-coating a primary anti-cracking glue layer, then roller-coating a primary UV flame-retardant coating layer, and finally curing the UV flame-retardant coating layer by using UV ultraviolet rays;

(13) slotting, namely slotting a mortise on the end surface, and slotting a tenon and a groove on the solid wood composite floor by a slotting machine;

(14) rolling and coating primary UV wear-resistant finish paint to form a transparent UV paint protective layer, and then curing the UV finish paint coating to a semi-cured state by using UV ultraviolet rays; rolling and coating the UV elastic finish once again, and finally curing the UV elastic finish by using UV ultraviolet rays;

(15) wax sealing, namely sealing wax on the mortise part of the wood floor, pumping high-temperature wood wax oil into a conveying pipeline through a vacuum pump, starting a nozzle connected with the conveying pipeline to spray the high-temperature wood wax oil in a mist form, and sealing wax on the mortise part of the wood floor; the temperature of the high-temperature wood wax oil is 60-80 ℃;

(16) and packaging the finished product, and finally checking and accepting the finished product, packaging and warehousing.

Technical Field

The invention relates to a solid wood composite floor, in particular to a solid wood composite floor adhered with a natural rare wood skin layer and a production process thereof, belonging to the field of solid wood composite floors.

Background

At present, the traditional solid wood floor is made of wood from bottom to top. The common materials are: the painted floor is prepared from oak, ash tree, maple, cherry, etc., and also from noble tree species such as rosewood and rosewood. The wood composite floor is a floor which is formed by pressing a plurality of layers or a plurality of layers of criss-cross pine veneers subjected to insect and mildew prevention treatment as base materials and then a single wood veneer with the thickness of 1 to 5 millimeters as a surface layer.

The solid wood floor is made of natural log through sawing, drying, edge planing, tongue and groove processing and UV roller (spraying) paint. The wood grain floor has the main advantages that the wood grain is natural, noble and elegant, but the installation is troublesome, and the wood keel must be laid firstly, and then the surface layer floor must be laid. The surface paint is not wear-resistant and expensive, and is generally used by higher-level users. The laminate flooring is formed by processing a 8mm high-density fiberboard substrate, melamine impregnated wood grain paper and aluminum oxide wear-resistant paper through high-temperature and high-pressure pressing and grooving. The floating type floor has the main advantages of suspension installation, convenience in installation, low price and wear-resistant surface, and can be widely used in public places with more people streams. However, the surface of the wood-grain paper is coated by melamine impregnated wood-grain paper, so that the wood-grain paper is monotonous in style, low in product grade and incapable of meeting the requirements of high-level consumption. And the existing floor products have more manufacturers and market supply is larger than the demand, so that the majority of users urgently need a floor which can widely absorb the advantages of the two products.

Disclosure of Invention

In order to solve the problems, the invention designs the solid wood composite floor pasted with the natural rare wood skin layer and the production process, which not only improve the product grade, but also have high product structural strength, are not easy to wear and prolong the service life.

The technical scheme of the invention is as follows:

a solid wood composite floor pasted with natural rare wood skins comprises a base material layer, wherein the base material layer is an artificial board, the thickness of the base material layer of the artificial board is 7-15 mm, the surface of the artificial board is smooth, and the solid wood composite floor is made of multilayer plywood or a high-density moisture-proof fiber laminated board or a directional structure board; the multilayer plywood is formed by alternately pressing and pasting fast-growing wood veneers with certain thickness; the high-density moisture-proof fiber laminated board is a high-density moisture-proof fiber board, and a single board is attached to the back of the high-density moisture-proof fiber laminated board; the directional structure plate is a structure type plate which is made by using narrow and long thin and flat wood shavings as basic units and through the processes of drying, gluing, directional paving and hot pressing; the surface of the wood veneer coated with the glue layer is coated with a transparent UV paint protective layer;

in addition, the longitudinal and transverse sides of the solid wood composite floor are respectively provided with a tenon and a groove which are matched, so that the solid wood composite floor is convenient to install.

Wear-resistant particles are added into the transparent UV paint protective layer, and comprise one or more of alumina materials, silicon carbide, diamonds and silicon oxide, and the mass percentage of the wear-resistant particles is about 0.5-10% of that of the transparent UV paint protective layer; the wear-resistant particles are uniformly dispersed in the transparent UV paint protective layer in an average particle size of 5-50 mu m.

The transparent UV paint protective layer is composed of a plurality of coatings, the thickness of the transparent UV paint protective layer is 200-400 mu m, the optimal thickness is 300-400 mu m, and the hardness of a paint film is larger than or equal to 5H.

The upper surface of the transparent UV paint protective layer can be sprayed with a transparent UV elastic finish paint layer.

A production process of a solid wood composite floor stuck with a natural rare wood skin layer comprises the following steps:

(1) selecting materials, namely selecting rare solid wood species, directly determining the grade of a product, wherein the selection is not only the rare solid wood, but also has good slicing performance, and the hardness cannot be too high; the thickness is determined by taking the production cost into full consideration, taking the sanding allowance of the surface finished product, peripheral chamfering treatment and the like into consideration, preferably, the veneering tree species are rare tree species such as black walnut, teak, sapelli, Brazilian rose and the like, and the thickness of the surface layer is 0.5-0.8 mm;

the fracture length does not exceed 1/2 of the nominal length of the finished product, the width is 0-3cm, and the fracture width outside the end part is 0-3.5cm as a standard;

(2) cooking, namely cooking the selected rare solid wood species raw material at the temperature of 120 ℃ for 30-45 minutes, wherein the shaping speed is high, and the raw material is not easy to crack;

(3) balancing, namely stacking and banding the well-shaped noble wood, putting the noble wood into a drying kiln for balancing until the moisture content is 6-9%, and releasing stress;

(4) slicing and cutting the square timber, slicing the balanced valuable timber to the required thickness, and then cutting the timber to the required size to obtain the square timber;

(5) cutting veneers, namely cutting the wood squares of the rare wood obtained in the step (4) into thin wood veneers, cutting the thin wood veneers to the required thickness, and cutting the thin wood veneers into required sizes;

(6) hot pressing the veneers, namely gluing the square wood obtained in the step (4) and the wood skin obtained in the step (5) with a modified urea-formaldehyde resin adhesive to ensure that the wood skin and a substrate layer such as a multilayer plywood are glued, wherein the glue applying amount is 140-²Pre-pressing for 30min at 12MPa to pre-cure the adhesive;

because the upper layer of the base material adopts the veneer, the lower layer adopts the melamine impregnated paper balance layer of the common laminate flooring, the upper layer and the lower layer adopt asymmetric materials, the board surface needs to be balanced, the glue seed has good water resistance and strong anti-stripping capability, can resist high temperature, has low toxicity and environmental protection, and is not easy to penetrate glue, such as single-component hot-pressing glue, the time and the temperature are the most important in three factors of the pressure, the time and the temperature of the hot-pressing process, the time is too long, the temperature is too high, the glue layer becomes brittle, and the board surface is easy to deform; the bonding strength is reduced when the time is too short and the temperature is too low, so the time and the temperature are moderate; the hot-pressing pressure, time and temperature directly determine the bonding strength; because the back balance paper has good waterproof performance and hardly absorbs water, the water content of the surface veneer must be moderate and cannot be too wet or too dry, so as to prevent the veneer from absorbing moisture and expanding or shrinking in the air drying process to cause the deformation of the floor board surface;

hot pressing at the pressure of 12-14MPa and the temperature of 115-125 ℃ for 5-6 min;

(7) anti-cracking treatment, namely uniformly coating an anti-cracking glue layer on the upper surface of the decorative wood veneer layer of the pre-pressed plate blank, brushing and brushing for 1-2 times by using a roller, standing for 1-2 hours after glue coating, and flattening and completely covering the plate blank by using a high-temperature resistant film;

(8) performing secondary balance, namely placing the pressed and pasted product in a balance room with the temperature of 25 ℃ and the relative humidity of 35-45% for curing for 48 h;

(9) repairing, namely repairing the crack of the board surface by using R810AB two-component black atomic ash, and storing for 6-8 h;

(10) cutting, namely cutting the repaired semi-finished product obtained in the step (9), cutting by a multi-blade saw, sanding the back surface of the semi-finished product, and making a plain plate with a fixed thickness;

(11) curing for 7 days in an environment with the temperature of 40 ℃ and the humidity of 60 percent. The method is carried out in a special curing room which comprises a temperature and humidity adjusting system and a good ventilation system. Through health preservation, the moisture content of the wood is further balanced, the internal stress is released, the solid wood floor reaches a relatively stable state, when the solid wood floor is influenced by external factors, the moisture content and the physical and chemical properties of the solid wood floor can meet requirements, the solid wood floor is suitable for being applied to different environments, and the color and luster are bright;

(12) coating a primer by UV, roller-coating a primary anti-cracking adhesive layer to achieve an anti-cracking effect, roller-coating a primary UV flame-retardant coating layer to increase the surface plumpness and hardness and achieve a flame-retardant effect, wherein the coating surface of the floor subjected to the paint rolling process is uniform, and finally, curing the UV flame-retardant coating layer by UV ultraviolet rays;

(13) slotting, namely slotting a mortise on the end surface, and slotting a tenon and a groove on the solid wood composite floor by a slotting machine;

(14) rolling and coating UV finishing paint for one time to form a transparent UV paint protective layer, so that the surface is wear-resistant, hard, scratch-resistant, smooth, flat and flame-retardant, and then curing the UV finishing paint coating to a semi-cured state by using UV ultraviolet rays; rolling and coating the UV elastic finish paint once again to make the floor more comfortable and the foot feel better, and finally curing the UV elastic finish paint by using UV ultraviolet rays;

(15) wax sealing, namely sealing wax on the mortise part of the wood floor, for example, pumping high-temperature wood wax oil into a conveying pipeline through a vacuum pump, starting a nozzle connected with the conveying pipeline to spray the high-temperature wood wax oil in a mist form, and sealing wax on the mortise part of the wood floor; the temperature of the high-temperature wood wax oil is 60-80 ℃; the wood wax oil is permeated into wood, absorbed by the wood and firmly combined with wood fibers, so that the permeation of moisture in the surrounding environment to the wood is reduced, the drying shrinkage and wet expansion of the wood are reduced, the dimensional stability of the wood is increased, the cracking degree of the wood is reduced, the anti-cracking effect is improved, the floor deformation is prevented, the service life of the floor is prolonged, meanwhile, the oil in the wood wax oil can permeate into the wood to be tightly combined with the wood fibers, the deep moistening and maintenance are given to the wood, the elasticity of the wood is increased, the groove and tenon part (groove) of the floor is effectively lubricated, the friction sound between the groove and tenon of the floor is thoroughly solved, the silencing effect is achieved, and the effects of water resistance, durability, environmental protection, silence, repeated use and the like are achieved;

(16) and packaging the finished product, and finally checking and accepting the finished product, packaging and warehousing.

In addition, shaping and setting treatment can be carried out after the step (2), the temperature is 150-200 ℃, the setting time is 25-30 minutes, and the stability of the wood is good. If the setting temperature is too high and the setting time is too long, the color of the shaping material is deepened, and the mechanical property is reduced. The shaping speed can be greatly improved by adding a proper amount of ammonia gas in the cooking process, the adding amount of the ammonia gas accounts for 5-20% of the total amount of the mixed gas with steam, the shaping time can be shortened by adding more ammonia gas, but the space is polluted, and therefore 10% of ammonia gas is suitable.

The invention has the beneficial effects that: not only improves the grade of the product, but also has high structural strength, is not easy to wear and prolongs the service life.

The invention is further illustrated by the following figures and examples.

Drawings

FIG. 1 is a schematic structural diagram of a natural noble wood-attached skin layer according to an embodiment of the present invention;

fig. 2 is a process flow chart of a production process of a solid wood composite floor pasted with a natural rare wood skin layer in the embodiment of the invention.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.