JPH07112407A - Glued laminated wood and manufacture thereof - Google Patents

Abstract

PURPOSE:To manufacture a glued laminated wood from a plurality of lumbers such as lumbers from thinning or the like. CONSTITUTION:The glued laminated wood 1 concerning is obtained through a series of treatments such as a softening process for softening a plurality of lumbers from thinning 2 by thermally treating with a stem heating device, hot water in a water tank or a high-frequency heating device, an adhesive applying process, a pressure compressing process and a solidifying treating process, all three of which are executed with a compression forming device. At this time, by properly selecting the number of lumbers from thinning 2 used, various glued laminated wood 1 are obtained, resulting in allowing use as building material over wide range.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thinning material that can be effectively used for thinning thin trees and short lengths and mill ends removed during the growth process of cedar, cypress, etc., and a method for producing the same. In particular, it can be used over a wide range of building materials, and the productivity of the aggregate is improved by shortening the curing period of the aggregate after the timber has been aggregated. It is about.

[0002]

2. Description of the Related Art Generally, cedar, cypress and the like are widely used as building materials, but since they are originally soft materials, their fastness is low, and their usable range is naturally limited. In particular, thinned wood removed in the growth process of cedar, cypress, etc. is a small-diameter tree, and since it is often extremely soft and curved, such thinned wood is a building material,
For example, it could hardly be used as a pillar or the like.

In order to make effective use of such thinned wood,
Conventionally, various methods have been proposed. For example, Japanese Unexamined Patent Publication (Kokai) No. 3-231802 describes a method for modifying a wood, in which the wood is placed in a steam atmosphere to be softened and then compression-molded under a high pressure condition to fix the deformation of the wood. ing. Further, Japanese Patent Laid-Open No. 3-97503 discloses a method for treating wood which is softened by high frequency dielectric heating and then pressed when softening the wood. Furthermore,
Japanese Unexamined Patent Publication No. 5-116112 discloses a composite wood pole material obtained by preliminarily chamfering a plurality of thinned wood into wedge-shaped quadrangular wood pillar materials, and assembling the quadrangular wood pillar materials by bonding them with an adhesive. Has been described.

[0004]

However, JP-A-3-231802 and JP-A-3-975 are mentioned above.
The method for treating wood described in Japanese Patent Publication No. 03 is a method for softening the thinned wood and then applying pressure to modify the thinned wood, but is only a treatment method for treating the thinned wood for each tree. . Therefore, although it is possible to improve the usefulness of thinned wood with low utility value as a building material etc., the thinned wood itself that has been modified in this way has a small diameter. Considering that it is wood, it is not available in a wide range of building materials.

Further, the composite wooden pole material disclosed in the above-mentioned Japanese Patent Laid-Open No. 5-116112 is constructed by adhering a plurality of thinned timbers to each other with an adhesive. In order to form into a predetermined shape (for example, a quadrangular shape), it is necessary to chamfer each thinning material in advance to form a wedge-shaped quadrangular wooden post material. As described above, it is a very complicated work to perform the chamfering process on each thinned material in advance, and there is a problem that the cost becomes high accordingly.

The present invention has been made in order to solve the above-mentioned conventional problems, and it can be used over a wide range of building materials by collecting and fixing a plurality of woods made of thinned wood or the like. It is an object of the present invention to provide an aggregate material and a method for manufacturing the aggregate material, which are capable of shortening the curing period of the aggregate material and improving the productivity.

[0007]

Means for Solving the Problems In order to achieve the above-mentioned object, an aggregate material according to the present invention has a predetermined shape by pressurizing and compressing while interposing an adhesive agent on each of a plurality of wood surfaces softened by heat treatment. In addition to forming an aggregate formed by molding, the aggregate is subjected to an immobilization treatment via a heating device.

The manufacturing method of the aggregate according to the present invention is
A first step of heat-treating a plurality of pieces of wood to soften each piece of wood, a second step of applying an adhesive to the surface of each piece of softened wood, and pressing each piece of wood to which the adhesive has been applied It is composed of a third step of forming an aggregate formed by compression into a predetermined shape, and a fourth step of immobilizing the aggregate through a heating device. At this time, the heat treatment for softening each piece of wood is performed by steam heating, heating in heated water, or high frequency heating. Also,
In the immobilization treatment by the heating device, the immobilization treatment is performed by heating the aggregated material through heated steam or a heater.

[0009]

The aggregate having the above-mentioned structure according to the present invention is a heating device for an aggregate formed by pressing and compressing while interposing an adhesive on the surface of each of a plurality of woods softened by heat treatment. The immobilization process is performed through the
When softened, each wood is easily plastically deformed, and the contact area between each wood is increased in the compression process to obtain an integrated aggregate. In such an aggregate, a plurality of pieces of wood are bound and fixed to each other via an adhesive, so that they can be used over a wide range of building materials. In addition, since the aggregate is fixed at a higher temperature for the aggregate formed into a predetermined shape by pressure compression, dimensional stability is improved and at the same time the curing period of the aggregate is shortened and productivity is improved. It is possible to obtain an aggregate material which is improved and is low in cost.

Further, in the method for manufacturing an aggregate material according to the present invention, a plurality of pieces of wood are heat-treated in the first step.
By this heat treatment, each piece of wood is softened so that it can be easily plastically deformed. At this time, various methods can be applied as a method for heat-treating each piece of wood, such as heat treatment by steam heating, heat treatment in heated water, and heat treatment by high-frequency heating. According to each of these heat treatment methods, a relatively large amount of wood can be heat treated at once.

After the first step, in the second step, an adhesive is applied to the surface of each softened wood. Here, the adhesive is for binding the woods to each other. Further, after the completion of the second step, in the third step, each wood coated with the adhesive as described above is pressed and compressed into a predetermined shape to form an aggregate formed by integrating a plurality of woods. It Further, in the fourth step, the aggregate thus formed is subjected to an immobilization treatment at a higher temperature than in the first step through a heating device that heats the aggregate with heated steam or a heater, whereby the aggregate material is obtained. Is manufactured.

In the aggregate material manufactured as described above, a plurality of pieces of wood are bound and fixed to each other with an adhesive, and therefore, by appropriately selecting the number of pieces of wood to be used, Aggregates that can be used over a wide range can be manufactured. In addition, since each timber is bound with an adhesive and then fixed through a heating device, it can be used as a building material with abundant dimensional stability at an early stage. It becomes possible to improve the productivity by removing the residual stress and shortening the curing period. Furthermore, since each wood used for the aggregate material does not require machining such as chamfering, it is possible to significantly reduce the aggregate material and the production cost thereof.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A detailed description will be given below of an embodiment embodying the present invention with reference to the drawings. First, FIG. 1 and FIG.
The structure of the aggregate material will be described with reference to FIG. Figure 1
Fig. 2 is an end view of an aggregated material obtained by compressing and assembling a plurality of thinned woods having a relatively uniform diameter, and Fig. 2 is an end view of an aggregated material obtained by compressing and assembling a plurality of thinned woods having different diameters. First, in FIG. 1, a plurality of aggregated materials 1 (12 in the aggregated material 1 of FIG. 1) are compressed and assembled with each other while interposing an adhesive 3 between the thinned materials 2 and further heating. It is fixed by steam or a heater. Here, each thinning material 2 is the thinning material removed from the growing process of cedar, cypress, etc., and each thinning material 2 has a front end 2A of about 15c.
The thinned timber with a comparatively uniform diameter is used with the m and the end opening 2B being about 10 cm.

Further, each thinning material 2 is, as shown in FIG.
In the vertical and horizontal rows of the aggregate 1, the main openings 2A and the end openings 2B are alternately arranged. For example, taking the row of the thinned woods 2 at the uppermost position in the aggregated wood 1 as an example, when the thinned woods 2 are arranged so that the main opening 2A is on the end face side (the thinning at the rightmost position of the row is shown). The timber 2) and the thinned timber 2 lined up with the thinned timber 2 are arranged so that their end openings 2B are on the end face side of the aggregated material 1. Then, the thinning materials 2 to be arranged next are arranged such that their base openings 2A are arranged on the end surface side of the aggregate material 1, and further, the thinning materials 2 of the next thinning material 2 are arranged on their end openings 2B on the end surface side of the aggregate material 1. Such a relationship between the thinning materials 2 is retained in the vertical rows and the horizontal rows of the aggregate material 1. By arranging the thinning materials 2 in this way, it becomes difficult to form a gap between the thinning materials 2 when performing compression molding and immobilization processing described later, and the amount of the adhesive 3 used is saved. can do.

Further, the adhesive 3 is for binding the thinning materials 2 to each other, and various kinds of adhesives can be used as the adhesive used in this embodiment. For example, a thermosetting adhesive such as a phenol-based adhesive containing a phenol resin as a main component or a resorcinol-based adhesive containing a resorcinol resin as a main component is preferably used. In addition, as the thermosetting adhesive, a melamine-based adhesive containing melamine resin as a main component, a urea-based adhesive containing urea resin as a main component,
An epoxy-based adhesive containing an epoxy resin as a main component can also be used. In addition to the thermosetting adhesive, an aqueous polymer-isocyanate adhesive containing isocyanate and an aqueous polymer as a main component, a vinyl acetate resin adhesive, or the like can also be used. Here, when selecting the adhesive to be used, it is desirable to select it in consideration of the cost of the adhesive, the type of solvent, the use of the aggregate, and the like.

Next, the aggregate 4 shown in FIG. 2 will be described. This aggregated material 4 has basically the same structure as the aggregated material 1 shown in FIG. 1, and each thinning material 5 used.
However, the difference is that the diameters vary. The thinning material is a plurality of thinning materials (20 in the collecting material 4 of FIG. 2).
The thinning materials 5 are compressed and assembled with the adhesive 3 interposed therebetween, and are further fixed by heating steam or a heater.

Here, as each thinning material 5, a thinning material having an average diameter in the range of about 6 cm to 20 cm is used. When arranging such thinned timbers 5 to collect each other, since each thinned timber 5 is selected depending on whether the average diameter falls within the predetermined range in consideration of the diameter of the original opening and the diameter of the end opening, Unlike the thinning material 2 of the aggregate material 1 shown in FIG. 1,
It is not particularly necessary to alternately arrange the leading edge and the trailing edge of each thinning material 5. However, it is desirable to appropriately arrange the thinning materials 5 in consideration of the entire shape of the aggregate material 4. Here, the thinned woods having different diameters generally have a half-use value and are difficult to use, but the aggregate material 4 as described above has a sufficient use value. Since the adhesive 3 is the same as that used for the aggregate 1 shown in FIG. 1, the description thereof is omitted.

Next, a manufacturing method for manufacturing the aggregate materials 1 and 4 configured as described above will be described. As for the aggregate materials 1 and 4, a softening step of softening the thinned wood materials 2 and 5 by heating the thinned wood materials 2 and 5 and applying an adhesive to the surface of each softened thinned wood material 2 and 5. Adhesive applying step for applying, pressure compressing step for press-compressing each thinning material 2, 5 having an adhesive applied to the surface to form an aggregate having a predetermined shape,
And, it is manufactured through an immobilization treatment step of immobilizing the aggregate through heated steam or a heater.

Therefore, first, the heat treatment performed in the softening step will be described with reference to FIGS. Here, FIG. 3 is an explanatory view schematically showing a state in which the thinning materials 2, 5 are heat-treated by the steam heating device, and FIG. 4 is a state in which the thinning materials 2, 5 are heat-treated in a water tank filled with hot water. FIG. 5 is an explanatory view schematically showing a state in which the thinning materials 2 and 5 are heat-treated by a high-frequency heating device.

First, a method of performing heat treatment with the steam heating device shown in FIG. 3 will be described. The steam heating device 10 has a cylindrical heating container 11, and the heating container 11 has a steam injection port 1 for injecting heated steam into the inside thereof.
2 (right side in FIG. 3) and an exhaust port 13 (upper side in FIG. 3) for discharging the heated steam inside to the outside of the steam heating device 10.
Is provided. In the steam heating device 10, the inside of the device 10 is communicated with the atmosphere via the exhaust port 13. Further, a plurality of thinning materials 2 and 5 are laminated inside the steam heating device 10 with a partition plate 14 interposed therebetween. The partition plates 14 serve to position the thinning materials 2 and 5 so that they do not move within the device 10.

Here, the inside of the apparatus 10 is heated to 70 ° C. to 160 ° C. by the heated steam injected from the steam injection port 12 into the apparatus 10. Preferably, the water vapor pressure of about 1 kgf / cm ² is injected intermittently to maintain the temperature in the apparatus 10 at about 80 ° C. The heating time is set to about 6 hours. In order to perform the heat treatment of each thinning material 2, 5 with such a steam heating device 10, the peeled thinning materials 2, 5 are laminated inside the device 10 via each partition plate 14 and then from the steam injection port 12. The heated steam is intermittently injected. Thus, the thinning materials 2, 5 are uniformly softened while the heated steam is being jetted.

Next, a method of heat-treating the thinning materials 2 and 5 in hot water will be described with reference to FIG. In FIG. 4, the water tank 20 is filled with hot water 21, and a net 22 such as a wire net containing a plurality of thinning materials 2, 5 is immersed in the hot water 21. A lid 23 is attached to the water tank 20. This lid 23 closes the upper part of the water tank 20 during the heat treatment of the thinning materials 2 and 5, and the hot water 21 in the water tank 20 is closed.
This is to prevent the temperature from dropping.

Here, the hot water 21 filled in the water tank 20 may be boiling water at 60 ° C. or higher, but considering long-term treatment, the temperature is preferably set within the range of 90 ± 5 ° C., and if necessary, the heater. The temperature control may be performed by internally providing. Also, the heating time for each thinned material 2, 5 requires about 6 hours. To heat-treat each thinning material 2, 5 using such a water tank 20, 90 ± 5
After filling the boiling water 21 heated to 0 ° C., a net 22 containing a plurality of thinning materials 2 and 5 that have been peeled in advance is placed in the water tank 20 via a crane or the like, and immersed in the boiling water 21. Then, after closing the upper portion of the water tank 20 with the lid 23, heat treatment is performed for about 6 hours. As a result, the thinning materials 2 and 5 are uniformly softened.

Furthermore, the thinned material 2, 5 is heated by a high frequency heating device.
A method of performing the heat treatment of 1 will be described with reference to FIG. In FIG. 5, the high frequency heating device 30 is a device main body 3
1 has an electrode plate 32 arranged in a plurality of stages, and a plurality of thinning materials 2, 5 are placed on each electrode plate 32. A microwave oscillator 33 is provided on the upper part of the device body 31, and a control device 34 for controlling the microwave oscillator 33 is provided on a side part (right side part in FIG. 5) of the device body 31. Is attached.

Here, the frequency of the high frequency oscillated from the microwave oscillator 33 is set to 2450 ± 50 MHz, and its output is set to 600 W. Further, the time of the high frequency induction heating performed by the microwave oscillator 33 is set to about 1 hour.
In order to heat the thinning materials 2 and 5 by using the high-frequency heating device 30, the thinning materials 2 and 5 that have been peeled are placed on the electrode plates 32 arranged in the apparatus body 31, and After that, the microwave oscillator 33 is driven through the control device 34 under the above-mentioned conditions. As a result, each thinning material 2, 5
Is heated by the high frequency wave emitted from the microwave oscillator 33 and uniformly softened.

Next, an adhesive application step of applying an adhesive to the surface of the thinned woods 2, 5 which have been heat-treated and softened by the above-mentioned heat treatment methods, and the thinned woods 2, 5 having an adhesive applied on their surfaces. A pressure-compression step of press-compressing to form an aggregate having a predetermined shape and an immobilization treatment step of immobilizing the aggregate through heated steam or a heater will be described.

The adhesive application step, the pressure compression step, and the immobilization treatment step are carried out via a compression molding device described below. Therefore, such a compression molding device will be described with reference to FIG. FIG. 6 is a sectional view schematically showing the compression molding device. In FIG. 6, the compression molding device 40 includes a pressure vessel 41 (longer in the direction perpendicular to the paper surface) formed in a tubular shape having a rectangular cross section, and the upper wall and the left and right sides of the pressure vessel 41. Rod holes 42, 43, and 44 are formed in both walls, respectively.

A press cylinder 45 is connected to the rod hole 42 at one end outside the pressure container 41, and a press rod 47 having a press die 46 attached to the other end inside the pressure container 41 is slidable. It has been inserted.
As a result, the press rod 47 is moved downward via the press cylinder 45 when the thinning materials 2 and 5, which will be described later, are compressed and compressed. The thinning materials 2 and 5 are pressed from above. Further, the press die 46 has a large number of steam holes 4
6A are formed, and steam is passed from each steam hole 46A during the immobilization treatment described later and is injected to each thinning material 2, 5 arranged below.

Further, in the rod hole 43 formed in the left wall of the pressure vessel 41, as with the press rod 47, a press cylinder 48 is connected to one end outside the pressure vessel 41, and the pressure vessel 41 is also connected. Press die 4 inside the other end
The press rod 50 to which 9 is attached is slidably inserted. Like the press die 46, the press die 49 has a large number of steam holes 49A formed therein, and steam is passed through each steam hole 49A during the immobilization treatment and jetted onto the thinning materials 2 and 5. To be done.

Further, in the rod hole 44 formed in the right wall of the pressure vessel 41, as with the press rods 47 and 50, a press cylinder 51 is connected to one end on the outside of the pressure vessel 41 and a pressure is applied. A press rod 53 having a press die 52 attached to the other end inside the container 41 is slidably inserted. Further, the press die 52 has
Like the press dies 46 and 49, a large number of steam holes 52A
Is formed, and steam is passed from each steam hole 52A during the immobilization treatment and injected into the thinning materials 2 and 5.

Further, inside the pressure vessel 41, a press die 54 is fixedly installed at a lower position, and a plurality of thinning materials 2, 5 to be pressed and compressed are placed on the press die 54. Is placed. Further, in the press die 54, as with the press dies 46, 49, and 52, a large number of vapor holes 54A are formed, and water vapor passes through the vapor holes 54A during the immobilization treatment. Is sprayed on the thinned wood 2 and 5.

Inside the press die 49, a slide mechanism (not shown) can be slid vertically along the inner wall of the press die 49 and in the left-right direction together with the press die 49. A slide press die 55 is provided, and inside the press die 52, a slide mechanism is also used to vertically extend along the inner wall of the press die 52 and the press die 52. At the same time, a slide press die 56 that is slidable in the left-right direction is provided. Further, each slide press die 55, 56 has a large number of vapor holes 55, like the press die 46, etc.
A and 56A are formed. Each of these slide press dies 55 and 56 prevents the thinning materials 2 and 5 from collapsing when a plurality of thinning materials 2 and 5 are placed on the pressing die 54, and each thinning material. It serves to maintain the laminated state of the materials 2 and 5.

A large number of nozzles 57 (only two nozzles 57 are shown in FIG. 3) are provided along the longitudinal direction of the pressure vessel 41 above the left and right walls of the pressure vessel 41. The adhesive 3 is sprayed from each nozzle 57 onto the surface of each thinning material 2, 5 in the adhesive applying step. Here, from each press cylinder 45, 48, 51 configured as described above to each press rod 47, 50,
The pressure exerted on 53 is changed according to the compression ratio of each thinning material 2, 5;
It is set to 10 kgf / cm ² at f / cm ² and a compression rate of 30%.

In the compression molding device 40 constructed as described above, the thinning materials 2, 5 held in a laminated state by the press dies 49, 52, 54 and the slide press dies 55, 56, respectively. On the other hand, a steam injection device that injects heated steam from the four walls of the pressure vessel 41 is provided. Here, the water vapor pressure of the water vapor injected from the water vapor injecting device is set to 5 to 16 kgf / cm ² or more, and the heating temperature is set to a range of 130 ° C. to 200 ° C., preferably 150 ° C. To 180 ° C is preferable.

Next, using the compression molding device 40 having the above-described structure, an adhesive application process, a pressure compression process, and a plurality of thinning materials 2 and 5 softened by each heat treatment are applied.
And by performing the immobilization treatment step,
A method for manufacturing 4 will be described. Here, before performing each of the steps, each of the press dies 46, 49,
It is assumed that 52 and 54 are held in the state shown in FIG.

First, a plurality of thinning materials 2, 5 softened through the above-mentioned steps are stacked and placed in the pressure vessel 41, and each thinning material 2 is cooperated with each slide press die 55, 56. The laminated state of 5 is maintained (see FIG. 6). At this time,
As for thinned wood 2 having almost the same diameter, as described above, the thinning wood 2 is laminated so that the front and rear openings of each thinning wood 2 are alternately arranged, and the thinning wood 5 having different diameters is described above. As described above, the laminated materials are laminated in consideration of the shape and the like.

Thereafter, the adhesive is sprayed from the nozzles 57 onto the surfaces of the thinning materials 2 and 5. The sprayed adhesive is the vapor holes 46 of the press dies 46, 49, 52, 54.
A, 49A, 52A, 54A, and steam holes 55A, 56A of the slide press dies 55, 56, respectively, and are jetted to the thinning materials 2, 5. Then, after a certain amount of the adhesive is sprayed, the adhesive is allowed to stand still for about 5 minutes so that the adhesive is evenly spread over the surfaces of the thinning materials 2, 5. This completes the adhesive application step.

After the adhesive is sprayed on each of the thinned woods 2 and 5 as described above, a pressure compression process is performed according to the compression ratio of each of the thinned woods 2 and 5. In this pressure compression step, first,
The press rod 47 is moved under pressure via the upper press cylinder 45, whereby the press die 46 presses and compresses the thinned wood materials 2 and 5 with a predetermined pressure from above. At this time, since the thinning materials 2 and 5 are in a softened state, the press dies 49, 52 and 54 and the slide press dies 55,
In cooperation with 56, it is compressed via the press die 46. The slide press dies 55 and 56 are moved downward in synchronization with the pressurization state of the press die 46, and finally contacted with the inner side surfaces of the press dies 49 and 52. Then, the press die 46 finishes the vertical compression at the time when it moves by a predetermined amount according to the compression rate, and stops.

Next, through the press cylinders 48 and 51, the press rods 50 and 53, the press dies 49 and 52, and the slide press dies 55 and 56, the left and right sides of the thinning materials 2 and 5 are passed. Pressure compression in the direction is performed. By such pressure compression, the thinning materials 2, 5 receive pressure from the left and right directions in FIG. 6 and are compression-molded. Then, when the press dies 49 and 52 have moved by a predetermined amount in accordance with the compression rate, the pressurizing and compressing step is completed. Such an end state is shown in FIG. Here, FIG. 7 is a cross-sectional view schematically showing the state of the compression molding apparatus at the time when the pressure compression step is completed.

The time of the pressure-compression process depends on the type of adhesive because the bonding time varies depending on the type of adhesive used, but the time of pressure-compression process is approximately 30 minutes. The thinning materials 2 and 5 are bound to each other with an adhesive. As a result, each thinning material 2, 5
Are compressed and aggregated as shown in FIGS. 1 and 2, respectively, to form an aggregate. At this time, the adhesive remains as solidified adhesive 3 (see FIGS. 1 and 2) in the assembly.

Next, each thinning material 2, obtained as described above,
An immobilization process is performed on the aggregate formed by binding 5 to each other via the adhesive 3. The immobilization process will be described with reference to FIG. For the immobilization processing, the aggregate is shown in FIG.
It is carried out by injecting heated steam to each thinning material 2, 5 from the steam injecting device while maintaining the state shown in FIG. The heated steam injected from the steam injection device in this manner is used in the steam holes 4 of the press dies 46, 49, 52, 54.
6A, 49A, 52A, 54A, and steam holes 55A, 56A of the slide press dies 55, 56, and are jetted to the thinning materials 2, 5. As a result, the thinning materials 2, 5 in the aggregate are fixed, and the thinning materials 2, 5 are fixed so as to keep their shape permanently.

At this time, as conditions for carrying out the immobilization treatment, the temperature of the heated steam injected from the steam injecting device into the pressure vessel 41 is preferably 180 ° C., the water vapor pressure is 10 kgf / cm ² , and the immobilization treatment is carried out. The time is about 1 hour,
Each is set. Further, as shown in FIG. 8, the fixing process as described above is performed by the heater H disposed near the left and right side walls of the compression molding device 40 as shown in FIG.
It can also be performed by heating the inside. That is, as in the case of FIG. 7, each heater H is electrically heated while the assembly is held in the state shown in FIG.
By immobilizing the state of heating the inside of 0 to a predetermined temperature for a predetermined time, the assembly is fixed.

At this time, when performing the immobilization treatment, each heater H is heated and controlled so as to keep the internal temperature of the compression molding device 40 at 180 ° C., and the immobilization treatment time is set to 20 hours. ing. After the immobilization process as described above is completed, the aggregates 1 and 4 described with reference to FIGS. 1 and 2 are obtained. Aggregate 1, 4 manufactured in this way
When actually used as a pillar or beam in a house, or as a core material for construction materials, etc., it is possible to express a characteristic design in which natural wood grain is aggregated and deformed. You may use it by pasting a decorative board etc. on the surface.

As described in detail above, in the aggregates 1 and 4 according to this embodiment, a plurality of thinning materials 2 and 5 are steam heating device 10, hot water 21 in water tank 20, or high frequency heating device 3.
It is obtained by performing a series of treatments including a softening step of heating and softening by 0, an adhesive applying step by the compression molding device 40, a pressure compression step, and a fixing treatment step. Various aggregated materials 1 and 4 can be obtained by appropriately selecting the number of each thinned material 2 and 5. As a result, the aggregate materials 1 and 4 according to the present embodiment can be used over a wide range as a building material.

Further, in the aggregates 1 and 4 according to this embodiment, the thinning materials 2 and 5 are bonded to each other with an adhesive, and then the fixing treatment is performed. It is possible to permanently retain the shape after pressure compression molding while binding the thinning materials 2 and 5 to each other. As a result, the dimensional stability and the like can be shortened to about 1 hour, which was conventionally required for about 1 week, and the productivity of the aggregates 1 and 4 can be remarkably improved. Is.

Furthermore, in the aggregates 1 and 4 according to this embodiment,
Immediately after peeling each thinning material 2, 5, a series of treatments including a softening process, an adhesive applying process by the compression molding device 40, a pressure compression process, and a fixing process can be performed.
As a result, unlike the prior art, it is not necessary to perform mechanical processing such as chamfering in advance at the stage of thinning material, and it is possible to manufacture the aggregate materials 1 and 4 at an extremely low cost.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various improvements and modifications can be made without departing from the gist of the present invention. For example, in the assembly materials 1 and 4 according to the present embodiment, as shown in FIGS. 1 and 2, the assembly material having a rectangular parallelepiped shape has been described as an example, but each press die 46 used in the compression molding device 40 is described. It is obvious that the aggregate material having various desired shapes can be obtained by variously changing the shapes such as.

[0048]

As described above, according to the present invention, by collecting and fixing a plurality of woods made of thinned wood or the like,
It is possible to develop a free design that makes use of changes in the grain of wood and to use it in a wide range of building materials, and it is possible to improve the productivity by shortening the curing period of the aggregate material, and thus the cost is low. An aggregate material and a method for manufacturing the aggregate material can be provided, and the industrial effect thereof is great.

[Brief description of drawings]

FIG. 1 is an end view of an aggregated material obtained by compressing and assembling a plurality of thinned woods having relatively uniform diameters.

FIG. 2 is an end view of an aggregated material obtained by compressing and assembling a plurality of thinned woods having different diameters.

FIG. 3 is an explanatory view schematically showing a state in which a steam heating device heat-treats a thinned material.

FIG. 4 is an explanatory view schematically showing a state in which a thinning material is heat-treated in a water tank filled with boiling water.

FIG. 5 is an explanatory view schematically showing a state in which a thinned material is heat-treated by a high-frequency heating device.

FIG. 6 is a sectional view schematically showing a compression molding device.

FIG. 7 is a cross-sectional view schematically showing a state of the compression molding device at the time when the pressure compression step is completed.

FIG. 8 is a cross-sectional view showing a state in which an immobilization process is performed via a heater provided in a compression molding device.

[Explanation of symbols]

 1, 4 Aggregate material 2, 5 Thinning material 3 Adhesive 10 Steam heating device 20 Water tank 21 Hot water 30 High frequency heating device 33 Micro-oscillator 40 Compression molding device 41 Pressure vessel 45, 48, 51 Press cylinder 46, 49, 52 Press metal Type

Claims (7)

[Claims] 1. An aggregate formed by pressurizing and compressing a plurality of wood surfaces softened by heat treatment while interposing an adhesive to form a predetermined shape, and collecting the wood through a heating device. Aggregate characterized by immobilization on the body. 2. A first step of softening each piece of wood by heat-treating a plurality of pieces of wood, a second step of applying an adhesive to the surface of each piece of softened wood, and the application of the adhesive It is characterized by comprising a third step of forming an aggregate formed by compressing and compressing each piece of wood into a predetermined shape, and a fourth step of immobilizing the aggregate through a heating device. A method of manufacturing an aggregate. 3. The method for manufacturing an aggregate according to claim 2, wherein the heat treatment is performed by heating with steam. 4. The method for manufacturing an aggregate according to claim 2, wherein the heat treatment is performed in heated water. 5. The method for manufacturing an aggregate according to claim 2, wherein the heat treatment is performed by high frequency heating. 6. The method for manufacturing an aggregate according to claim 2, wherein the heating device performs the immobilization treatment by heating the aggregate through heated steam. 7. The method of manufacturing an aggregate according to claim 2, wherein the heating device performs the immobilization treatment by heating the aggregate through a heater.