Direct skin-attached plywood based on fast-growing eucalyptus engineered wood
By adopting a multi -layer single -board structure based on the direct skin paste patchhole based on fast -growing eucalyptus technology wood, the problem of weakness and surface unevenness of traditional plywood substrates are solved, and high -density, flatness, and stability of plywood substrates are achieved. For decorative materials.
Patent Information
- Application Number
- CN202420936292.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Traditional plywood substrates are soft, difficult to withstand pressure, and have uneven surfaces, with defects such as stuttering, burrs, cracks, etc., resulting in surface carbonization, poor glue strength, unevenness, bubbles and degumming.
The direct skin paste of the fast -growing eucalyptus technology wood with a multi -layer veneer structure is adopted by reorganizing the technology of the technology of the technology and the thermoplastic film item.
The flatness and stability of the plywood substrate is realized, the problem of unevenness and deformation of surface unevenness and density is avoided, the density and practical value are enhanced, and the tiomine paper has not been dehydrated.
Smart Images
Figure CN222406210U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of technical wood, in particular to a direct skin-adhesive plywood based on fast-growing eucalyptus technical wood. Background Art
[0002] Technological wood, also known as artificial wood, is a new type of material that is superior in hardness, corrosion resistance and other aspects, produced by using fast-growing wood as raw material and using the principle of bionics to process the original wood through a series of processing. Compared with fast-growing wood raw materials, the density of technological wood is considered to be controllable, the product performance is stable, the size is stable, and the surface flatness is good. There is basically no waste of wood during the processing process, and the comprehensive utilization rate reaches more than 86%. From its nature, technological wood is not wood, but an artificial composite material.
[0003] Using artificial fast-growing eucalyptus as raw material to prepare direct skin-attached plywood based on technical wood can effectively utilize fast-growing eucalyptus resources, realize the dream of efficient use of wood, and meet the growing market demand. Fast-growing eucalyptus technical wood substrate board is super flat, the product surface is flat and smooth, the texture is good, the density is high and can withstand high pressure, and it is suitable for furniture panels. The density of traditional plywood substrates is mostly 0.4-0.5kg / m 3 It is soft and cannot withstand pressure, and the surface is uneven, with bumps and lumps, and has defects such as knots, burrs, and cracks, which can easily cause surface carbonization, poor bonding strength, unevenness, bubbles, and debonding. Utility Model Content
[0004] The utility model aims to provide a direct skin-bonded plywood based on fast-growing eucalyptus technological wood, so as to solve the problems that the traditional plywood substrate is relatively soft and cannot withstand pressure, and the surface is uneven, bumpy, has knots, burrs and cracks. The prepared plywood substrate is flat, does not require additional treatment, and has no bubbles or degumming after being bonded with triamine paper.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A direct skin-adhesive plywood of the technological wood has a multi-layer veneer structure, wherein the multi-layer veneer structure is made of reconstituted technological wood veneers, the wood grain texture directions of each layer of reconstituted technological wood veneers are mutually crossed, and each layer of reconstituted technological wood veneers is hot-pressed and bonded by a thermoplastic adhesive film.
[0007] The reconstituted technical wood veneer is specifically made by planing the square end faces of the technical wood.
[0008] The multi-layers are 3 layers.
[0009] The recombinant technical wood veneer is prepared from fast-growing eucalyptus wood.
[0010] The thermoplastic film is melamine-modified urea-formaldehyde resin.
[0011] The melamine-modified urea-formaldehyde resin sizing amount is greater than 130 g / m 2 .
[0012] By adopting the above technical solution, the utility model has the following advantages and beneficial effects:
[0013] The utility model adopts eucalyptus veneer as raw material to make direct skin-adhesive plywood based on fast-growing eucalyptus technology wood. It is different from the technology wood plywood currently sold on the market, which is soft, easy to deform, and has low density. It is more innovative and endowed with skin-adhesive properties, which improves the practical value of eucalyptus. At the same time, it can also have the effect of skin-adhesive, excellent stability, good flatness, and compared with plywood, which needs to be leveled with putty and then veneered, it has certain innovation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic structural diagram of the direct skin contact plywood based on fast-growing eucalyptus technical wood provided in Example 1.
[0015] Figure 2 This is a schematic diagram of the reorganization of the wooden square. DETAILED DESCRIPTION
[0016] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.
[0017] Example 1
[0018] In this embodiment, the direct skin-adhesive plywood substrate of the technological wood has a three-layer veneer structure, and each layer of veneer is made of reconstituted technological wood veneer. The texture direction of the wood grain of the top veneer and the bottom veneer is the same, and the texture direction of the wood grain of the middle veneer is perpendicular to the texture direction of the wood grain of the top veneer and the bottom veneer.
[0019] like Figure 1 As shown, the reconstructed high-tech wood veneer is made by sawing a fast-growing eucalyptus high-tech wood block with a size of 850*1220*2440mm in the middle, stacking the two parts up and down, re-rolling UF glue, and cold-pressing them into new wood blocks with a size of 2440*850*1220mm, which are then sliced into eucalyptus high-tech wood veneers of the required thickness.
[0020] Each layer of veneer is bonded with melamine-modified urea-formaldehyde resin, cold pressed for 2-3 hours, and then hot pressed for 15-20 minutes, at a temperature of 110°C and a pressure of 9-10kgf / cm 2, forming an ultra-flat, ultra-thin, anti-deformation decorative material, which is the high-tech wood direct skin-bonded plywood substrate.
[0021] Then, a heavy-duty press is used to quickly and directly paste triammine paper on the technical wood direct skin-to-plywood substrate. The hot pressing pressure when pasting triammine paper is 13kgf / cm 2 The hot pressing temperature is 160-180℃ and the hot pressing time is 3-5min. Then it is cooled and polished to obtain the finished product.
[0022] Preferably, the glue used in the re-roller coating step is urea-formaldehyde resin modified by melamine that meets the ENF standard, the glue application amount is 500g per side, and the glue application area is 1220*2440mm.
[0023] The obtained high-tech wood direct skin-bonded plywood substrate has good flatness and high stability, does not need to be puttyed for leveling and then veneered, and is not easy to deform. The density of the obtained high-tech wood direct skin-bonded plywood substrate reaches 0.65kg / m 3 .
[0024] The main features of the utility model are described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements. These changes and improvements all fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A direct skin contact plywood of technological wood, characterized in that: It includes triamine paper and direct skin-contact plywood substrate, the triamine paper is pasted on the direct skin-contact plywood substrate of technological wood, the direct skin-contact plywood substrate has a multi-layer veneer structure, the multi-layer veneer structure is made of reconstituted technological wood veneers, each layer of the reconstituted technological wood veneers crosses each other according to different grain directions, and each layer of the reconstituted technological wood veneers is hot-pressed and bonded by a thermoplastic adhesive film.
2. The direct skin contact plywood of technological wood according to claim 1, characterized in that: The reconstituted technical wood veneer is specifically made by planing the square end faces of the technical wood.
3. The direct skin contact plywood of technological wood according to claim 1, characterized in that: The multi-layers are 3 layers.
4. The direct skin contact plywood of technological wood according to claim 1 or 2, characterized in that: The recombinant technical wood veneer is prepared from fast-growing eucalyptus wood.
5. The direct skin contact plywood of technological wood according to claim 1 or 2, characterized in that: The thermoplastic film is melamine-modified urea-formaldehyde resin.
6. The direct skin contact plywood of technological wood according to claim 5, characterized in that: The melamine-modified urea-formaldehyde resin sizing amount is greater than 130 g / m 2 .