Transverse plywood based on fast-growing eucalyptus technical wood veneer

Abstract

The utility model discloses a transverse plywood based on fast-growing eucalyptus engineered wood veneers, which is provided with a multi-layer veneer structure, the multi-layer veneer structure is made of the eucalyptus engineered wood veneers, the wood grain directions of the layers of the eucalyptus engineered wood veneers are mutually crossed, and the layers of the eucalyptus engineered wood veneers are adhered through foam glue. The eucalyptus engineered wood veneers are specifically formed by slicing the end faces of eucalyptus engineered wood battens. According to the transverse plywood based on the fast-growing eucalyptus engineered wood veneers, on one hand, the traditional longitudinal mode of the plywood is changed, the variable coefficient and the deformation resistance of the plywood are improved, on the other hand, fast-growing eucalyptus can be utilized in a high-value synergistic mode, cost and resources are saved, and the quality of the plywood is improved. And the practical value is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of technical wood, in particular to a transverse plywood based on fast-growing eucalyptus technical wood veneer. Background Art

[0002] With rapid economic development, demand for precious wood species for interior decoration and furniture manufacturing is increasing, while forest resources for these species are becoming increasingly scarce. The advent of "technological wood" effectively protects natural forest resources of these precious species while effectively meeting market demand. Derived from nature and superior to nature, technological wood opens up a vast potential for development in the wood processing and manufacturing industry, actively explores sustainable development in the wood industry, and injects new vitality into the traditional wood industry. It not only creates new "green, healthy, and natural" wood products, but also promotes concern for the ecological environment, embracing the trend of sustainable development.

[0003] Using planted fast-growing eucalyptus as raw material for plywood effectively utilizes this resource, increasing its utilization rate and adding value, with significant economic and social benefits. However, because eucalyptus is directly used in plywood production, its weak deformation resistance makes the resulting plywood susceptible to deformation, limiting its application in plywood production. Utility Model Content

[0004] In order to solve the problem that plywood made of fast-growing eucalyptus is easy to deform, the utility model provides a transverse plywood based on fast-growing eucalyptus technical wood veneer, which improves the coefficient of variation and deformation resistance of the plywood by changing the traditional longitudinal method of the plywood.

[0005] A transverse plywood based on fast-growing eucalyptus technical wood veneer has a multi-layer veneer structure. The multi-layer veneer structure is made of reconstituted technical wood veneer. The wood grain texture directions of each layer of reconstituted technical wood veneer are mutually crossed. The layers of reconstituted technical wood veneer are hot-pressed and bonded with thermoplastic film. The reconstituted technical wood veneer is specifically made by slicing the square end faces of technical wood.

[0006] The multi-layer structure is 7 layers.

[0007] The thermoplastic film is melamine-modified urea-formaldehyde resin.

[0008] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0009] The utility model adopts eucalyptus wood as raw material to make technological wood square, which is then sliced into wood veneers. The wood veneers are made by cross-reorganizing the wood grain directions. The utility model changes the traditional longitudinal method of plywood to make transverse plywood, which not only reduces the production process, but also improves the coefficient of variation and anti-deformation ability of the plywood, and has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of a transverse plywood based on fast-growing eucalyptus technical wood veneer provided in a specific embodiment of the present invention.

[0011] Figure 2 This is a schematic diagram of the reorganization of wooden squares. DETAILED DESCRIPTION

[0012] To further illustrate the present invention, the present invention is described in further detail below with reference to the accompanying drawings and examples. It should be understood that the examples are merely provided to illustrate the present invention and are not intended to limit the present invention.

[0013] Example 1

[0014] like Figure 1 As shown, the transverse plywood based on fast-growing eucalyptus technical wood veneer described in the present invention has 7 layers of eucalyptus technical wood veneer, the wood grain texture directions of two adjacent layers are perpendicular to each other, and the layers are glued together using melamine-modified urea-formaldehyde resin.

[0015] Eucalyptus technical wood veneer is obtained through the following methods:

[0016] The fast-growing eucalyptus wood square of 850*1275*2550mm is sawn in the middle, and the two parts are stacked up and re-coated with UF glue by roller, and then cold-pressed into a new square of 2550*850*1275mm with vertical grain. It is then hot-pressed for 30-50 minutes at a pressure of 13kgf / cm 2 The hot pressing temperature is 130℃. After the hot pressing, it is left to cool for about 7-10 days, and then the edges are sanded and sawn to become straight-laid materials. It is then sliced into eucalyptus technical wood veneers of the required thickness. The thickness of the eucalyptus technical wood veneers is controlled at 0.15mm-3mm.

[0017] Preferably, the glue used for the packaging end face is foam glue, the composition of which is polyurethane quick-drying glue, the glue application area is 850*1270mm, and the glue application amount is 400-500g / sheet.

[0018] Preferably, the cold pressing time in the cold pressing step is 4-6 hours, and the cold pressing pressure is 13-15 kgf / cm 2 .

[0019] Preferably, the thickness of the sliced eucalyptus technical wood veneer is 0.15-3.5 mm.

[0020] The above describes the main features of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A transverse plywood based on fast-growing eucalyptus technical wood veneer, characterized by: It has a multi-layer veneer structure, and the multi-layer veneer is made of eucalyptus technical wood veneer. The wood grain texture directions between each layer of eucalyptus technical wood veneer are intertwined, and the texture directions of two adjacent layers of veneer are derived from the longitudinal slicing and transverse slicing of fast-growing eucalyptus technical wood squares respectively; the length direction of the plywood is perpendicular to the length direction of the logs of the fast-growing eucalyptus technical wood squares.

2. The transverse plywood based on fast-growing eucalyptus technical wood veneer according to claim 1, characterized in that: The multi-layer structure is 7 layers.

3. The transverse plywood based on fast-growing eucalyptus technical wood veneer according to claim 1, characterized in that: The thickness of the eucalyptus technical wood veneer is 0.15-3.5 mm.

4. The transverse plywood based on fast-growing eucalyptus technical wood veneer according to claim 1, characterized in that: The foam glue is composed of polyurethane quick-drying glue, and the glue application amount is 369~461g / m 2 .

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