CN-122008364-A - Aldehyde-free environment-friendly multilayer solid wood composite floor and preparation method thereof

CN122008364ACN 122008364 ACN122008364 ACN 122008364ACN-122008364-A

Abstract

The invention discloses an aldehyde-free environment-friendly multilayer solid wood composite floor and a preparation method thereof, wherein the aldehyde-free environment-friendly multilayer solid wood composite floor comprises a balance solid wood layer, a functional solid wood layer and a wear-resistant solid wood layer which are sequentially arranged from bottom to top, wherein the central area among the balance solid wood layer, the functional solid wood layer and the wear-resistant solid wood layer is formed by adopting aldehyde-free glue through hot pressing, and the edge parts are connected by adopting a self-locking structure; the upper surface central area on balanced wood layer is equipped with first net groove, and the lower surface on function wood layer is equipped with a plurality of first briquetting that correspond with first net groove, and the upper surface central area on function wood layer is equipped with the second net groove, and the lower surface on wear-resisting wood layer is equipped with a plurality of second briquetting that correspond with the second net groove. The invention has the characteristics of reducing the glue consumption and protecting environment on the basis of ensuring the connection strength of the floor.

Inventors

LI HONGBO
SHEN HONGMING
Lei xinhua
Tian Yuanbao
Long Shunli

Assignees

浙江独角犀家居有限公司

Dates

Publication Date: 20260512
Application Date: 20260302

Claims (10)

1. The formaldehyde-free environment-friendly multilayer solid wood composite floor is characterized by comprising a balance solid wood layer (1), a functional solid wood layer (2) and a wear-resistant solid wood layer (3) which are sequentially arranged from bottom to top, wherein a central area among the balance solid wood layer (1), the functional solid wood layer (2) and the wear-resistant solid wood layer (3) is formed by adopting formaldehyde-free glue through hot pressing, the edge part is formed by adopting a self-locking structure, a first grid groove (11) is arranged in the central area of the upper surface of the balance solid wood layer (1), a plurality of first press blocks (21) corresponding to the first grid groove (11) are arranged on the lower surface of the functional solid wood layer (2), a second grid groove (22) is arranged in the central area of the upper surface of the functional solid wood layer (2), and a plurality of second press blocks (31) corresponding to the second grid groove (22) are arranged on the lower surface of the wear-resistant solid wood layer (3).
2. The formaldehyde-free environment-friendly multilayer solid wood composite floor board of claim 1, wherein a moisture-proof layer (4) is arranged below the balance solid wood layer (1), wavy damping sheets (5) are arranged between the balance solid wood layer (1) and the moisture-proof layer (4), certain buffer gaps are reserved between the damping sheets (5) and the balance solid wood layer (1) and between the damping sheets (4), damping blocks (51) are arranged at upper and lower concave parts of the damping sheets (5), and reinforcing ribs (14) which are clamped with the corresponding damping blocks (51) in a matching mode are arranged on the balance solid wood layer (1) and the moisture-proof layer (4).
3. The formaldehyde-free environment-friendly multi-layer solid wood composite floor board of claim 1, wherein the side parts of the first grid grooves (11) are communicated with each other through a first channel (111), and the side parts of the second grid grooves (22) are communicated with each other through a second channel (221).
4. The formaldehyde-free environment-friendly multi-layer solid wood composite floor board is characterized in that the self-locking structure comprises a first sawtooth structure (12) located on at least one side edge of the upper surface of the balanced solid wood layer (1), a second sawtooth structure (23) is arranged on at least one side edge of the upper surface of the functional solid wood layer (2), a third sawtooth structure (24) which is correspondingly meshed with the first sawtooth structure (12) is arranged on the lower surface of the functional solid wood layer (2), and a fourth sawtooth structure (32) which is correspondingly meshed with the second sawtooth structure is arranged on the lower surface of the wear-resistant solid wood layer (3).
5. The formaldehyde-free environment-friendly multi-layer solid wood composite floor board of claim 4, wherein a circle of first annular grooves (13) are formed in the balance solid wood layer (1) and located outside the first grid grooves (11), the notch height of each first annular groove (13) is lower than that of each first grid groove (11), a circle of second annular grooves (25) are formed in the functional solid wood layer (2) and located outside the second grid grooves (22), and the notch height of each second annular groove (25) is lower than that of each second grid groove (22).
6. The formaldehyde-free environment-friendly multi-layer solid wood composite floor board of claim 5, wherein the first sawtooth structure (12) is communicated with the first annular groove (13), the first sawtooth structure (12) is recessed to a depth smaller than the depth of the first annular groove (13), the second sawtooth structure is communicated with the second annular groove (25), and the second sawtooth structure is recessed to a depth smaller than the depth of the first annular groove (13).
7. The formaldehyde-free environment-friendly multi-layer solid wood composite floor board as claimed in claim 4, wherein annular uniform distribution nets (26) are arranged on the upper surfaces of the first annular groove (13) and the second annular groove (25).
8. The formaldehyde-free environment-friendly multi-layer solid wood composite floor board as claimed in claim 1, wherein the functional solid wood layer (2) is internally provided with a honeycomb-shaped hollow structure (27), and the honeycomb-shaped hollow structure (27) is internally filled with air, flame retardant materials, sound absorbing materials or antibacterial materials.
9. The method for preparing the formaldehyde-free environment-friendly multi-layer solid wood composite floor as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps: s1, processing fine micro scores on the upper surface of a balance solid wood layer (1), the upper surface and the lower surface of a functional solid wood layer (2) and the lower surface of a wear-resistant solid wood layer (3); S2, respectively machining a first grid groove (11), a first annular groove (13) and a first sawtooth structure (12) from the center to the outside on the upper surface of the balance solid wood layer (1), machining a reinforcing rib (14) on the lower surface of the balance solid wood layer (1), respectively machining a second grid groove (22), a second annular groove (25) and a second sawtooth structure (23) from the center to the outside on the upper surface of the functional solid wood layer (2), machining a first pressing block (21) in the central area of the lower surface of the functional solid wood layer (2), machining a third sawtooth structure (24) in the edge part of the lower surface of the functional solid wood layer (2), machining a second pressing block (31) in the central area of the lower surface of the wear-resistant solid wood layer (3), and machining a fourth sawtooth structure (32) in the edge part of the lower surface of the wear-resistant solid wood layer (3); S3, respectively immersing the balance solid wood layer (1), the functional solid wood layer (2) and the wear-resistant solid wood layer (3) into an antibacterial solution, performing ultrasonic treatment, taking out and drying, and controlling the water content of the balance solid wood layer (1), the functional solid wood layer (2) and the wear-resistant solid wood layer (3) to be 6% -7%; S4, uniformly distributing nets (26) on the first annular groove (13) and the second annular groove (25), coating aldehyde-free glue on the central areas of the upper surfaces of the balanced solid wood layer (1) and the functional solid wood layer (2), and leaving a certain amount of aldehyde-free glue at the bottoms of the first grid groove (11) and the second grid groove (22) without glue at the edge parts; S5, overlapping the balance solid wood layer (1), the functional solid wood layer (2) and the wear-resistant solid wood layer (3), wherein a first pressing block (21) is embedded into a first grid groove (11), a third sawtooth structure (24) is meshed with a first sawtooth structure (12), a second pressing block (31) is embedded into a second grid groove (22), a fourth sawtooth structure (32) is meshed with a second sawtooth structure (23), and then hot pressing is carried out; And S6, after the hot pressing is finished, sequentially installing a damping sheet (5) and a moisture-proof layer (4) below the balance solid wood layer (1) to obtain the formaldehyde-free environment-friendly multi-layer solid wood composite floor.
10. The method according to claim 9, wherein in the step S5, the initial stage of hot pressing is performed at a temperature of 50-60 ℃ and a pressure of 0.3-0.5 MPa, the middle stage of hot pressing is performed at a temperature of 120-160 ℃ and a pressure of 1-2 MPa, and the later stage of hot pressing is performed at a temperature of 90-120 ℃ and a pressure of 0.5-0.8 MPa.

Description

Aldehyde-free environment-friendly multilayer solid wood composite floor and preparation method thereof Technical Field The invention relates to an environment-friendly floor, in particular to an aldehyde-free environment-friendly multilayer solid wood composite floor and a preparation method thereof. Background The multilayer solid wood composite floor is formed by vertically and horizontally staggered hot-pressing and gluing multilayer solid wood veneers, and comprises a surface layer (adopting oak, walnut, teak, maple and other hard wood veneers), 7-13 base material layers (adopting eucalyptus, birch, pine and poplar constant-speed soft wood), a bottom layer (adopting poplar, birch and other veneers with good stability) and a core layer, wherein the inner stress is vertically counteracted by wood grains of adjacent layers, so that high stability is realized. The production uses log rotary cutting, drying, assembly, hot pressing, sanding, veneering, slotting and painting as a core process. The existing environment-friendly multilayer solid wood composite floor is even provided with aldehyde-free glue, but the number of layers is large, so that the glue consumption between each layer is large in order to ensure the connection strength, the use cost of the aldehyde-free glue is increased, the aldehyde-free glue can excessively permeate into surface wood to damage a fiber structure, and layering and swelling occur after long-term use. Disclosure of Invention The invention aims to provide an aldehyde-free environment-friendly multilayer solid wood composite floor and a preparation method thereof. The invention has the characteristics of reducing the glue consumption and protecting environment on the basis of ensuring the connection strength of the floor. The technical scheme is that the formaldehyde-free environment-friendly multilayer solid wood composite floor comprises a balance solid wood layer, a functional solid wood layer and a wear-resistant solid wood layer which are sequentially arranged from bottom to top, wherein a central area among the balance solid wood layer, the functional solid wood layer and the wear-resistant solid wood layer is formed by adopting formaldehyde-free glue through hot pressing, edge parts are connected through a self-locking structure, a first grid groove is formed in the central area of the upper surface of the balance solid wood layer, a plurality of first pressing blocks corresponding to the first grid groove are arranged on the lower surface of the functional solid wood layer, a second grid groove is formed in the central area of the upper surface of the functional solid wood layer, and a plurality of second pressing blocks corresponding to the second grid groove are arranged on the lower surface of the wear-resistant solid wood layer. In the formaldehyde-free environment-friendly multilayer solid wood composite floor, the moisture barrier is arranged below the balance solid wood layer, the wavy damping sheet is arranged between the balance solid wood layer and the moisture barrier, a certain buffer gap is reserved between the damping sheet and the balance solid wood layer and between the damping sheet and the moisture barrier, damping blocks are arranged at the upper concave part and the lower concave part of the damping sheet, and reinforcing ribs matched with the corresponding damping blocks are arranged on the balance solid wood layer and the moisture barrier. In the formaldehyde-free environment-friendly multilayer solid wood composite floor, the side parts of the first grid grooves are communicated with each other through the first channel, and the side parts of the second grid grooves are communicated with each other through the second channel. In the formaldehyde-free environment-friendly multilayer solid wood composite floor, the self-locking structure comprises a first sawtooth structure positioned on at least one side edge of the upper surface of the balanced solid wood layer, a second sawtooth structure is arranged on at least one side edge of the upper surface of the functional solid wood layer, a third sawtooth structure which is correspondingly meshed with the first sawtooth structure is arranged on the lower surface of the functional solid wood layer, and a fourth sawtooth structure which is correspondingly meshed with the second sawtooth structure is arranged on the lower surface of the wear-resistant solid wood layer. In the formaldehyde-free environment-friendly multilayer solid wood composite floor, a circle of first annular grooves are formed in the balance solid wood layer, the outer portions of the first annular grooves are located, the notch heights of the first annular grooves are lower than those of the first annular grooves, a circle of second annular grooves are formed in the functional solid wood layer, the outer portions of the second annular grooves are located, and the notch heights of the second annular grooves are lower than those of the