JPS591764Y2 - wooden board - Google Patents

Description

[Detailed description of the invention] The present invention is a water-quality plate-like product formed by using waste veneer such as saw-cut edge waste, clipper cutting waste, and clipper cutting waste generated in large quantities during the manufacturing of plywood. This is related to.

Until now, scrap materials such as the sawn selvedge scraps and scrap veneers, which are generated multiple times during the production of plywood, have been used only for low-value purposes such as fuel.

The present invention aims to make effective use of these sawn selvedge scraps and scrap veneers, and also has fiber directionality in the formed plate-like object, excellent bending strength, and the surface of the plate-like object. By pasting a veneer on the back side, a plywood with quality and strength comparable to ordinary plywood can be obtained, and thick plywood can be easily obtained. It has many advantages such as being easily formed using an extrusion molding device with low equipment costs.

The present invention will be explained below with reference to an example shown in the drawings.The core material 2 used in the present invention is made by cutting a sawn edge scrap 1 as shown in FIG. A predetermined width W obtained by cutting at C (set equal to the thickness of the desired plate-like object, approximately 6 mm to 12 mm)
It is cut to the width of a person.

), and is in the form of a long and thin strip with a predetermined length L.

The wooden rod-shaped small piece 4 is, for example, a scrap veneer 3 as shown in FIG.
The cross section obtained by cutting the veneer finely along the cutting line C' parallel to the fiber direction F is several mm square (depending on the thickness of the scrap veneer), and the length is from several cm to several tens of mm. c.
It is a rod-shaped piece of indefinite length.

In the present invention, adhesive such as urea resin adhesive is applied in advance to a large number of these wooden rod-like pieces 4, and if necessary, the front and back surfaces 1'' of the core material 2 that will be in contact with the rod-like pieces 4 are applied. By applying adhesive to the core material 2 and aligning the fiber direction, that is, the longitudinal direction, of the large number of wooden rod-like pieces 4, and making the fiber direction coincide with the longitudinal direction of the core material 2, As shown in FIG. 4, the plate-like objects 5 arranged so that the rod-like small pieces 4 are arranged alternately and shaped are the predetermined width W of the core material 2, and the length thereof is the same as the core material 2.
The core material 2 is oriented so as to have a predetermined length L, and the wooden rod-shaped pieces 4 are interposed between the core materials 2.

The plate-like material 5 is formed by, for example, extrusion-type molding means, and consists of surface plates that are vertically opposed to each other at approximately equal intervals to a predetermined width W of the core material 2 and a predetermined length L of the core material 2. A molding path is formed by side plates arranged on the left and right at approximately equal intervals, and a core material 2 and an appropriate amount of a large number of wooden rod-like pieces 4 are placed in this molding path, with the longitudinal direction of the core material 2 and the fiber direction of the rod-like pieces 4 being aligned. Align and alternately insert the core material 2 and each time an appropriate amount of the wooden rod-like pieces 4 are inserted, press with a reciprocating pressing member from the direction perpendicular to the fibers of the rod-like pieces 4, that is, from the side of the core material 2,
By compressing and fixing them together, the thickness becomes the specified width W.
In this way, a plate-like object 5 having a predetermined length L is formed.

In addition, the dimension in the direction orthogonal to the longitudinal direction of the core material 2 of the plate-like material 5 should be a dimension that matches the size of the veneer to be attached to the front and back surfaces of the core material when it is used as a core of ordinary plywood. be.

As mentioned above, the wood planks of the present invention have directional fibers, so they can be used as the core of ordinary plywood, and the core material obtained from sawn selvedges acts as aggregate. The bending strength in the fiber direction is much higher than that of a plate made only from rod-shaped small pieces, and the molding can be carried out using an extrusion-type molding device with low equipment costs. Smooth molding, which could not be achieved with only small rod-shaped pieces, becomes smoother with the presence of core material.Furthermore, it is possible to use scrap materials such as sawn edges and scrap veneer, so the manufacturing cost is lower than that of other materials. It has the advantage of being much cheaper than plate-shaped materials, and also contributes to improving yields in plywood manufacturing.

[Brief explanation of the drawing]

Figure 1 is a slope view of sawn edge waste, Figure 2 is a slope view of scrap veneer,
FIG. 3 is an oblique view of a wooden rod-like piece, and FIG. 4 is an oblique view of a wooden plate-like object of the present invention. 1... sawed ear scraps, 2... heartwood, 3...
...Scrap veneer, 4...Small wood sticks, 5...
...Wood board-like material.

Claims (1)

[Scope of utility model registration request] A core material 2 with a predetermined width and a predetermined length obtained by cutting sawn edge scraps 1 of plywood parallel to the saw cut line 1', and a scrap layer veneer 3 etc. are cut in the fiber direction. The longitudinal direction of the core material 2 and the fiber direction of the many wood rod-like pieces 4 are roughly aligned, and the core material 2 and an appropriate amount of the many wood rod-like pieces 4 are alternately arranged. A wood board-like article having a thickness and length that is a predetermined width and a predetermined length of the core material 2 and integrally formed with an adhesive.