JPS5845908A - Manufacture of synthetic material wood for veneer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention (1) utilizes small-diameter trees such as thinned wood, miscellaneous trees, side cores, etc. that are unsuitable for cutting veneer veneers in a plywood factory 6. The present invention relates to a method for producing synthetic logs (hereinafter referred to as 1 synthetic logs).

When a log is cut into veneer lace as a cutting snow cover at a plywood factory, the wood is small in diameter, with a diameter of about 10 to 40 cm, and the side core remains.

The side core is usually a chip for forming pillars, bars, particle boards. Alternatively, it can be used as fuel, but it can only be used at an extremely low price compared to when used as a veneer veneer.

In order to solve the shortcomings of A ``method for producing veneer'' has been proposed, but it involves applying adhesive to each side of small-diameter wood and bonding the small-diameter wood together to form regenerated logs. , which required an extremely large amount of adhesive.

In particular, in terms of the price of recycled logs, while the price of small-diameter logs is extremely low, adhesives account for an extremely high proportion, leading to high costs.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, it is an object of the present invention to provide a method for producing synthetic logs that can produce synthetic logs at low cost by reducing the amount of adhesive consumed.

Hereinafter, the method of the present invention will be explained according to the embodiments shown in FIGS. 1 to 3.

The outer peripheral surface of the small-diameter wood l in the figure is cut in a cutting process at a plywood factory, and is formed into a substantially hexagonal column shape, preferably a regular hexagonal column shape.

In addition, in the Okuki process, the small-diameter wood L with the same outer diameter was cut to form a hexagonal prism shape. There is no problem even if there is.

Plane portion 11 of small diameter tree 1 formed in a hexagonal prism shape
Of II, the plane portion 11. After applying an adhesive such as a thermosetting adhesive, a thermoplastic adhesive, or a wet-curing adhesive to each IC and left pair, apply at least 7 pieces with approximately equal outer diameters. The cross section in the direction perpendicular to the core of the above small-diameter wood l is made by making the flat parts lb, ld, if, which are non-adhesive surfaces, and the flat part 1a*1cele, which is the adhesive adhering surface shown by diagonal lines in FIG. 2, in contact with each other. One synthetic raw wood W is formed by adhesively bundling the wood so that it has a substantially circular tortoise-shell shape.

In addition, the number of small diameter trees 1 suitable for forming the synthetic log W exhibiting a substantially circular shape is as follows.

A=3g-(*+1)+1 (n is any integer) Therefore, the minimum required number is seven.

In addition, when bonding the small-diameter trees 1 together, the small-diameter trees 1 are tightly bound together by a method of tightening them with cables or the like.

Moreover, it is possible to obtain synthetic raw wood W that is reliably bonded and tightly bundled.

When the synthetic raw wood W is placed on a veneer lace (not shown) and cut, a top-stripped veneer (not shown) with a narrow width is obtained up to the position shown by the broken line in Figure 2, and After that, a strip-shaped nest board S is obtained, which is made up of one narrow-width board that is horizontally cut as shown in FIG. 3.

1. In this embodiment, adhesive is uniformly applied to the flat parts 1B, lc, and le at every interval among the flat parts 1m-If of the small-diameter wood l, and the adhesive is applied uniformly to the flat parts 1B, lc, and le of the small-diameter wood l. A method was adopted in which the flat parts 1b, ld, and If, which serve as non-adhesive surfaces, were brought into contact with each other and bonded together.

By omitting the application of adhesive to the flat parts of small-diameter trees located at the outermost periphery that are not in contact with the flat parts of other small-diameter trees, the consumption of adhesive can be further reduced and costs can be reduced. I can do it.

In addition, in this embodiment, a flat part 1 a e 1 c * 1 e of a hexagonal prism-shaped small diameter tree l is used as an adhesive adhesion surface.
Adhere the adhesive over the entire surface of the flat part 1 m"+I
cele and flat parts 1b and ld as adhesive non-adhesive surfaces
, If are connected to each other, and a large number of small diameter trees 1 are bonded and bundled. However, in the present invention, for one of the adjacent planar parts,
Even if there is a method of obtaining appropriate partitions as shown in Prisoner 41,
It is possible to obtain the veneer veneer S shown in (2) in the same figure, and it is possible to reduce the consumption of adhesive and realize cost reduction.

As explained above, the method of the present invention can reduce the consumption of adhesive and form a low-cost composite IR log.

Appendix l According to the actual test, the chips are undried or dried.

As an adhesive, "Dainippon Ink Co., Ltd.@5r-1004 type" or "Sumito Bakelite Co., Ltd. Smitatta GA-61"
Type 4 wet curing adhesive can be used as undiluted solution or 30 times (
After diluting the material below (weight ratio) to form a synthetic log with a moisture content similar to that of natural logs, a urea-based adhesive as a thermosetting adhesive was attached to the dried chips. I was able to obtain 7 logs.

Supplementary note 2 The synthetic raw wood obtained from the present invention C can be turned into a veneer without destroying the bonded bond of small diameter wood even if a speedle rotation drive type veneer race is used. By using the so-called peripheral drive type veneer lace that was first developed by humans, the action of extra rotational driving force on one synthetic log is regulated, so it is possible to reliably prevent the destruction of one bundle of synthetic logs.

Addendum 3 During turning with veneer lace, one rotation driving force acts on the end of the log, and the wood? Because it will be destroyed.

A short side core is obtained, and the short side cores are joined in the direction of the core to form a long small diameter wood.

Even if a large number of small-diameter trees were glued together and the joints of adjacent small-diameter trees did not match, one synthetic bark log could be formed. (5th
(See Figures ＾・■) In addition, the above method was able to similarly form synthetic water removal even for short thinned wood and miscellaneous trees.Additional note 4 As shown in Figure 6, the material is divided into equal parts on the outer periphery and has a roughly trapezoidal shape. By using the method of forming synthetic logs using small-diameter pieces of wood, the number of small-diameter trees required to form synthetic logs could be saved by three.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a small diameter tree used in the method of the present invention. FIG. 112 is an explanatory diagram showing a state of adhesive binding of small diameter trees as shown in FIG. FIG. 3 is an explanatory diagram showing the turning state of synthetic raw wood. 614 Figure ^ (B+) to Figure 6 are explanatory diagrams showing modified examples of the present invention. In the figure, 1 is small diameter wood, ja to 1f are flat parts, and W is synthetic raw wood. Patent - Applicant Stock Company Meinan Seisakusho Agent Patent Attorney Ken Ito - Commissioner of the Patent Office Haruki Shimada N April 851 I
Bi^1. Display of the case 1982 Patent Application No. 145228 2 Name of the invention Method for manufacturing synthetic lumber for veneer veneer 3 Person making the amendment Relationship to the case Patent applicant address 3-130 Kajita-cho, Obu City, Aichi Prefecture Name Co., Ltd. Name: Minami Seisakusho Representative: Katsutsugu Hase 4, Agent Address: 6, 1-181 Higashiura-dori, Minami-ku, Nagoya City, ``Detailed Description of the Invention'' column 7 of the specification to be amended Contents (1) "Circular shape" written in lines 3 to 4 of page 3 of the specification is corrected to "cylindrical shape." C) rA=3n −(
Correct n+1)+IJ to rA-3n--(n+1)+IJ. e) As described in page 7, line 4 of the specification, [A short side core is obtained, but 1, a short side core...! "・" is corrected to "A short side core is obtained, but a short side core is...". (4) "Elongated shape" described on page 7, line 5 of the specification is replaced with "
Corrected to ``elongated''. (5) "Short shape" described on page 7, line 9 of the specification is replaced with "
Corrected to "short length".

Claims (1)

[Scope of Claims] L A method for obtaining synthetic logs by cutting the outer periphery of small-diameter trees to form a substantially hexagonal prism shape, and then adhesively bundling the planar parts of at least seven or more small-diameter trees, respectively. . At least the flat part of each adjacent small-diameter tree,
A method for producing synthetic lumber for veneer veneer, characterized in that adhesive is applied only to the flat part of the veneer and the small-diameter pieces of wood are bonded together.