JPH10217211A - Aggregate and columnar body made of the aggregate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aggregate and a columnar body made of the aggregate by utilizing it in any state of material of timber piece for constituting the aggregate, difference of color tones or surface state, preventing warpage and improving bending strengths in lateral and lengthwise directions. SOLUTION: Various types of thinnings and end material are manufactured to timber pieces of a predetermined thickness, and various width and length of a rectangular parallelepiped. Directions of the pieces are aligned, laminated in lengthwise and width directions with adhesive to a plate-like material of desired width and length. Thereafter, woody veneer of suitable thickness is laminated to perpendicularly cross a linear fiver direction of the material by using adhesive on both front and rear surfaces of the material and further as needed to obtain the aggregate, and the aggregates are suitably superposed and laminated to obtain the columnar body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly in which a single-layer wooden veneer is laminated on the front and back surfaces of a plate-like body in which wood pieces made of thinned wood and offcuts are attached to each other with the fiber directions orthogonal to each other. The present invention relates to a columnar member obtained by further laminating a laminated material and the laminated material with an appropriate number of adhesives.

[0002]

2. Description of the Related Art Heretofore, glued laminated lumber has simply been obtained by gathering wood pieces obtained from thinned wood or scrap wood with an adhesive. Therefore, in the case where extremely thin materials such as thinned wood or scraps are mixed with extremely low strength, hardness, etc., there is a case where the load or stress is concentrated on the portion and damage or deformation occurs. Therefore, it is necessary to use a piece of wood that has a certain quality even if it is a laminated wood. Also, when the laminated wood appears on the surface, those having knot holes and those having extremely different colors had to be sorted out or not to appear on the table. Therefore, glued lumber, which should be inexpensive, becomes expensive. The same problem also exists in the columnar body of the laminated wood.

[0003]

The present invention can be used regardless of the material, the color tone, or the surface condition of the pieces of wood constituting the laminated wood, and furthermore, the warpage can be prevented. It is an object of the present invention to provide a laminated wood having improved bending strength in the width direction and the length direction and a columnar body made of the laminated wood.

[0004]

As a result of various studies in order to solve the problems of the above-mentioned conventional laminated wood, the laminated wood of the present invention or a columnar body further laminated with the laminated wood is used as the laminated wood. Of the pieces of wood that make up, those with extremely different colors
Alternatively, they have found that even those having extremely poor physical properties can be used without selection, and have reached the present invention.

That is, according to the present invention, rectangular parallelepiped pieces of wood having a predetermined thickness are aligned and bonded in the length direction and the width direction to form a plate, and the thickness of the plate is appropriately adjusted on the front and back surfaces of the plate. Glued wood veneer with its fiber direction perpendicular to the fiber direction of the plate-like body is provided. Laminated wood characterized in that the veneer is bonded with its fiber direction parallel to the fiber direction of the plate-like body, provided that the laminated wood is cut to a predetermined width, and laminated as appropriate, Alternatively, there is provided a columnar body characterized in that the laminated bodies are appropriately stacked in number and then laminated and then cut to a predetermined width.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is intended to produce thinned woods and offcuts of various tree species into rectangular parallelepiped wood pieces having a predetermined thickness, various widths and lengths, and the directions of the wood pieces. Are aligned and glued in the length and width directions with an adhesive.
A plate-like body having a length, and thereafter, a woody veneer having an appropriate thickness is formed on the front and back surfaces of the plate-like body using an adhesive so that a fiber direction thereof is required to be orthogonal to a line fiber direction of the plate-like body. In accordance therewith, a veneer having an appropriate thickness is adhered thereon in parallel with the direction of the linear fibers of the plate-like body to obtain a laminated material. Further, a columnar body is obtained by cutting the laminated wood to a predetermined width and laminating the laminated lumber in appropriate numbers, or laminating the laminated lumber in a suitable number of times and then laminating the laminated lumber to a predetermined width.

[0007] The width and length of the wood pieces are appropriately determined according to the size of the thinned wood and the scraps. There is no particular limitation on the tree species of the thinned wood and offcuts. For example,
In addition to cypress, pine, keyaki, etc., cedar, paulownia, china, oak, ho,
Wood pieces of soft wood species such as wig, radiata pine, lauan, etc. may be randomly attached. The thickness of the thinned wood and the trimmings are in the range of 5 to 50 mm in thickness, 5 to 20 mm in width, and 10 to 500 mm in length. The thickness is constant according to the purpose of use. Saw wood pieces of various sizes. After that, pieces of wood of various sizes are aligned in the same direction and bonded to form a plate of a desired size, and a wood veneer is bonded as described above. When the wood veneer is attached such that the fiber direction is orthogonal to the fiber direction of the plate-like body as described above, the occurrence of warpage of the plate-like body can be prevented, and the bending strength in the width direction can be improved. Things. Further, it is preferable to attach a wooden veneer thereon so that the fiber direction thereof is parallel to the fiber direction of the plate-like body, since the bending strength in the length direction is improved even when the length of the wood piece is short. The thickness of the wood veneer is not particularly limited, but a range of 0.1 to 5 mm, preferably 0.3 to 3 mm is suitable for handling or economical. Further, the above laminated materials are laminated using an appropriate number of adhesives and bonded to obtain a columnar body.

[0008] Further, in laminating the laminated wood, a columnar body having a size which is an integral multiple of the width and thickness of a desired columnar body is manufactured and cut into a desired size to obtain a columnar body more efficiently. be able to. However, it is preferably about 3 to 4 times each side for handling. When a decorative paper or a veneer veneer is further adhered to one surface, front and back and side surfaces of the laminated material and the columnar body made of the laminated material, it can be used as a decorative plate, a decorative column, a decorative frame or the like.

[0009] As the adhesive for bonding the above-mentioned pieces of wood, phenolic resin, urea resin, urea melamine resin, melamine resin, vinyl acetate resin, epoxy resin, urethane resin and the like are used. Selected.

[0010]

As described above, the laminated body of the present invention and the columnar body obtained by laminating and bonding the laminated body are the front and back surfaces of a plate-like body obtained by laminating wood pieces with an adhesive. Since the wood veneer is bonded so that its fiber direction is perpendicular to the plate-like body fiber direction, warpage is prevented and bending strength in the width direction is improved, and further, the wood veneer is further placed thereon. When the fiber direction is bonded in parallel with the fiber direction of the above-mentioned shaped body, the bending strength in the length direction of the plate-shaped body is also improved, so that it can be used for applications requiring high strength. Further, since the wood pieces constituting the glued laminated lumber do not directly appear on the surface, even when concentrated load is applied to a certain point, the glued laminated lumber or the columnar body laminated and bonded thereto is not damaged or deformed. Further, even if the wood piece has a knot hole or if the wood piece is mixed with an extremely different color tone, there is no need to remove it, and the wood piece can be used without selecting wood pieces of various tree types. Glued lumber can be obtained at low cost.

Claims (3)

[Claims] 1. A rectangular parallelepiped piece of wood having a predetermined thickness is aligned and stuck in the length and width directions to form a plate-like body. A laminated wood characterized in that a fiber direction is attached so as to be orthogonal to a fiber direction of the plate-like body. 2. A wood veneer having an appropriate thickness is attached to the front and back surfaces of the glued laminated wood according to claim 1 so that the fiber direction thereof is parallel to the fiber direction of the plate-like body. Glulam. 3. The glued laminated wood according to claim 1 or 2 is cut into a predetermined width, and the laminated wood is laminated in a suitable number of times, or the laminated laminated wood is laminated in a suitable number of times and then cut into a predetermined width. A columnar body made of the laminated wood.