Plywood and its manufacturing method
A manufacturing method and technology of plywood, applied in the direction of manufacturing tools, chemical instruments and methods, wood layered products, etc., can solve the problems of poor impact resistance of plywood, and achieve the effect of excellent impact resistance
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Embodiment 1
[0167] (manufacturing of plywood)
[0168] As the first layer, a poplar veneer having a thickness of 1.3 mm and a specific gravity of 0.43 was prepared by slicing a poplar. In addition, as the second layer, a eucalyptus veneer having a thickness of 2.7 mm and a specific gravity of 0.55 was prepared by slicing eucalyptus. In addition, the same poplar veneer as the above-mentioned first layer was prepared for the third, fifth, and seventh layers, and the same eucalyptus veneer as the above-mentioned second layer was prepared for the fourth and sixth layers. The prepared poplar veneer and eucalyptus veneer are formed in order from top to poplar veneer / eucalyptus veneer / Poplar veneer / eucalyptus veneer / poplar veneer / eucalyptus veneer / poplar veneer is laminated in a layer structure from the first layer to the seventh layer to prepare a laminated body of wood layers.
[0169] The above-mentioned laminated body of the wood layer was hot-pressed for 5 minutes under the conditions of a...
Embodiment 2
[0172] The types and thicknesses of trees in the first and second layers are shown in Table 1, and the same veneers as in Example 1 were laminated as the third to seventh layers. That is, each layer from the first layer to the seventh layer is laminated and adjusted in thickness using the same manufacturing method as in Example 1 above, forming a poplar veneer 0.8mm / eucalyptus veneer 2.5mm / poplar veneer Board 1.2mm / eucalyptus veneer 2.5mm / poplar veneer 1.2mm / eucalyptus veneer 2.5mm, the thickness was adjusted by grinding the poplar veneer as the seventh layer so that the total thickness of the plywood was 11.5mm. Other than that, it carried out similarly to Example 1, and produced the plywood.
Embodiment 3
[0174] The types and thicknesses of trees in the first and second layers are shown in Table 1, and the same veneers as in Example 1 were laminated as the third to seventh layers. That is, each layer from the first layer to the seventh layer is laminated and adjusted in thickness using the same manufacturing method as in the above-mentioned Example 1, forming a poplar veneer 0.6mm / eucalyptus veneer 2.5mm / poplar veneer Board 1.2mm / eucalyptus veneer 2.5mm / poplar veneer 1.2mm / eucalyptus veneer 2.5mm, the thickness was adjusted by grinding the poplar veneer as the seventh layer so that the total thickness of the plywood was 11.5mm. Other than that, it carried out similarly to Example 1, and produced the plywood.
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Abstract
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