JP6086522B2 - Oil palm compact - Google Patents

Description

The present invention relates to an oil palm compacted material obtained from oil palm (oil palm) which is a kind of palm. This oil palm compact is used for building floor materials and wall materials, building materials such as partition materials, furniture materials, boats and other boats, other indoor and outdoor decks and play equipment, and exterior and interior of vehicle body bodies. It can be done.
In general, “board” is described as “thin timber thin and flat” or “thin metal or stone thin and flat” according to Kojien, but here, oil palm is made of wood. Although it does not have properties, it has properties close to bamboo, but in oil palm, “thin and flat” is called “plate”. Moreover, since there is no term which calls the material of an oil palm in detail, it shall treat like the wood. In addition, since the boundary line between the “plate” and the “pillar” is not clear, they are used without distinction.

  In general, an oil palm tree consists of a single trunk and reaches a height of 10 to 20 m or more. The leaves are wing-shaped and about 3-5 m long, about 30 young trees a year, and about 20 new trees grow over 10 years old. The flower is composed of 3 petals and 3 cocoons, each of which forms a small but dense group, and it takes about 6 months from fruiting until the fruit ripens. The fruit consists of a fleshy flesh (medium peel) with a lot of oil and one seed that is also rich in oil, and the weight of the fruit is about 40-50 kg per bunch.

  It has been cultivated in plantations in Southeast Asia since the latter half of the 19th century. Palm oil, a vegetable oil that can be extracted from oil palm, is more productive and cheaper than other vegetable oils such as soybeans and rapeseed. Therefore, it is used for foods such as margarine and oil for fried foods. It is also widely used in soaps and cosmetics. In recent years, palm oil has been exported from Southeast Asia such as Malaysia and Indonesia to Japan. Therefore, oil palm sometimes refers to the meaning of fats and oils that can be taken from the pulp and seeds and the trunk of the oil palm itself.

In general, oil palm is a collective term for plants classified into the genus Palmae, and is famous for two types: Elaeis guineensis, native to West Africa, and Elaeis oleifera, native to Latin America. Among the cultivars, there is a hybrid of Guinea oil palm and American oil palm. In particular, oil palm (oil palm), which is a kind of palm used as a raw material for vegetable oils and fats, may be referred to as “oil palm”.
In other words, oil palm takes fats and oils from pulp and seeds, and the amount of fats and oils obtained per unit area is superior to other plants, so large-scale plantations mainly in Southeast Asian countries such as Malaysia as commercial crops. Because agriculture is carried out, it may be becoming more prominent to call the oil and fat “oil palm”.
However, in the present invention, it does not mean the oil palm of fats and oils that can be taken from the pulp and seeds, but the trunk of the oil palm itself or the whole plant is called oil palm.

  Patent applications dealing with this oil palm include those disclosed in Patent Document 1 (invention dealing with empty fruit bunch). In patent document 1, the manufacturing method of the building material using oil palm is disclosed. Specifically, after the palm fiber is washed, it is dried so that the dry oil becomes 95%, and the dried palm fiber is broken and cut in units of 1 to 1.5 cm to produce a palm fiber chip. Pulverizing the dried palm fiber with a particle size of 200 mesh, pulverizing bamboo with a particle size of 200 mesh, the palm fiber chip, the palm fiber powder, the bamboo powder, and the bioceramic powder Are prepared in a ratio of 1: 1: 1: 1 to produce a main raw material, a step of extracting fly ash having a particle size of 200 mesh from coal carbide, a flame inhibitor and a heat resistant resin. A step of producing a binder by mixing and melting a flame retardant resin for curing at a ratio of 1: 1, 20-30% by weight of the produced binder, 50-60% by weight of the mixed main raw material, fly ash 2 A step of mixing -25% by weight of powder and kneading in a high liquid state, a step of passing the bend through a forming part that radiates a temperature of 150 to 200 ° C. and baking it first, and the baked molded product Rolling between a plurality of upper roller groups and lower roller groups that are arranged so that the intervals gradually become narrower toward the rear side and gradually rolling to a thin thickness; A step of freezing at 0 to 4 ° C. while passing through a cooling part composed of a number of upper roller groups and a lower roller group, and a step of cutting the molded product by a unit of a certain length by a blade that is raised and lowered by a cutting cylinder It consists of processes.

  In this patent document 1, not only is it harmless to the human body by using palm fiber as the main raw material, but the palm fiber is cut with 1 to 1.5 cm and used together with palm fiber powder. It becomes a solid building material by acting as a temporary bridge with other contents, and antibacterial and deodorizing functions can be realized by bamboo and bioceramics. Further, generation of far infrared rays and anions can be expected without generating mold. And nonflammable waste material can be recycled and manufacturing cost becomes cheap. Furthermore, since no toxic gas is generated from all the compositions, it is said to be highly safe as a building material.

Further, in Patent Document 2 (invention dealing with empty fruit bunches), the plate-like body or molded body is made by attaching a resin having rubber-like elasticity to the oil palm fibers obtained by defibrating the empty fruit bunches of oil palm. A plate-like body or a molded body obtained by compression molding.
Therefore, the oil palm fiber obtained by defibrating the empty fruit bunch of oil palm has a fiber repellent property because, for example, palm oil adheres to the fiber surface compared to other palm fibers such as coconut palm fiber. The aqueous solution is excellent, and the amount of cellulose and lignin contained in the fiber is relatively large, so that the water resistance is excellent. In addition, the oil palm fiber has a high fiber strength, a large fiber diameter, and a long fiber length as compared with other palm fibers such as a coconut fiber, and therefore has excellent dimensional stability. In addition, since the oil palm fiber has large irregularities on the surface and high bending strength, and the entanglement between the fibers is large, the dimensional stability is also enhanced by this. Therefore, this plate-shaped body or molded body has excellent dimensional stability during water absorption and moisture absorption.
And since the irregularities on the surface of the oil palm fiber are large, the resin exhibiting rubber-like elasticity penetrates into the voids on the surface of the oil palm fiber and solidifies or hardens, which acts like a nail or wedge, so-called anchor effect. Therefore, the oil palm fiber is strongly bonded to the resin having rubber-like elasticity. This is also considered to contribute to the improvement of dimensional stability at the time of water absorption and moisture absorption.

The oil palm fiber is superior in elasticity recovery properties, for example, because the fiber has a large rigidity and strength, a large fiber diameter, and a long fiber length, compared to other palm fibers such as coconut fiber. Yes. Further, the oil palm fiber has high fiber bending strength and large entanglement between the fibers, so that the elastic recovery is improved. And the resin which shows rubber-like elasticity has high elastic recovery property. Therefore, a plate-like body or molded body in which oil palm fibers are connected by a resin exhibiting rubber-like elasticity exhibits excellent elastic recovery, good walking feeling and cushioning properties, and good sound insulation.
Since this plate-like body or molded body uses oil palm fiber, less labor is required for defibration, etc., compared to other types of palm fiber, so that manufacturing costs and energy can be reduced, and the product is inexpensive. Become. For example, coconut fiber is immersed in water for a long period of time to soften the coconut shell, and then requires a great deal of energy for a long period of time to be mechanically fibrillated. On the other hand, oil palm defibrates empty fruit bunches that are originally in the form of fibers, so that there is no need for immersion in water, and very little energy is required for defibration. In addition, oil palm fibers have less dusting properties than coconut fibers, and the working environment can be prevented from deteriorating in handling.
Furthermore, since a large gap is formed between the fibers of the oil palm fiber, when a resin exhibiting rubber-like elasticity is supplied by spraying or dipping, the resin adheres evenly to all the fibers through the gap, and the strength distribution is A plate state of being uniform is obtained.

And in patent document 3 (invention of an oil palm trunk), the technique of the plywood which made the adhesive penetrate | infiltrate the fiber exposed on the surface of the several single board bonded together with the adhesive agent is disclosed.
The palm plywood according to Patent Document 3 includes a plurality of single plates bonded with a resin adhesive, and at least one of the plurality of single plates is a palm single plate, and the palm single plate A resin adhesive is infiltrated into the palm fiber exposed on the surface. By using a palm veneer that can be manufactured from a palm trunk of inexpensive waste material, the surface is treated with a resin adhesive without using a veneer veneer with relatively good quality as a face and a back. Therefore, plywood is manufactured at low cost.
Moreover, the palm plywood of patent document 3 uses all the single veneers as palm veneers, uses only palm veneers that can be manufactured from palm trunks of inexpensive waste materials, and bonds them together with a resin adhesive. Also good. The resin adhesive permeated into the palm fiber at this time is the same type as the resin adhesive that bonds a plurality of single plates. Since the resin adhesive is the same system, the plywood can be manufactured at low cost. Here, the term “same system” includes the same resin adhesive and a composition whose composition (for example, composition ratio) is changed.

And the palm plywood of patent document 3 makes the palm fiber penetrate | infiltrate a resin adhesive after grind | polishing the surface which makes a palm fiber osmose | permeate a resin adhesive, reduces the palm fiber which protrudes from the plywood surface, and resin to palm fiber. The adhesive is permeated. This plywood manufacturing method includes a step of bonding a plurality of veneers with an adhesive, a step of polishing a surface of the plurality of veneers that allows the adhesive to penetrate into exposed fibers, and a polished surface. Applying adhesive to infiltrate the adhesive into the fiber and drying the adhesive, which makes it possible to use a relatively good quality wood veneer as a face and back without using it Plywood can be manufactured at cost.
Thus, according to Patent Document 3, a plywood, a palm plywood, and a plywood manufacturing method that can be manufactured at a low cost without using a single veneer of a relatively good quality tree as a face and a back are disclosed. Yes.

JP 2009-166342 A JP-A-10-8696 JP 2011-68015 A

As described above, Patent Document 1 and Patent Document 2 both use oil palm fibers obtained by defibrating empty fruit bunches of oil palm fruits, and do not directly use oil palm trunks. Absent. However, the trunk of the oil palm is 20 m or more in mature wood, and its utilization is desired because it is a volume ratio occupying 90 to 95% of the whole.
Especially in Southeast Asia such as Malaysia, oil palm is cultivated for the production of palm oil, but the empty fruit bunch after palm oil collection contains a lot of fiber etc. Is used in various applications such as fiber boards. However, palm trunks that are harvested every year are not used effectively and are currently being disposed of.
Patent Document 3 discloses a process in which at least one outermost single plate is bonded to a palm single plate with a plurality of resin adhesives, and the surface of the palm single plate is a resin adhesive on the exposed palm fibers. Disclosed is a method for manufacturing a plywood, comprising: a step of polishing a surface that impregnates a surface; a step of applying a resin adhesive to the polished surface to infiltrate the resin adhesive into palm fibers; and a step of drying the resin adhesive. ing. However, it is unclear how to apply the resin adhesive to the oil palm veneer or to penetrate the exposed palm fiber, and a specific method for manufacturing plywood Is unknown. At least, it is premised on the use of a resin adhesive in which a single plate of oil palm is bonded with a plurality of resin adhesives.

What is commonly called plywood, lauan plywood called veneer wood, Chinese plywood with cinna wood finished on the surface of the lauan plywood, conifer plywood made of pine, cedar, etc. There is. Lauan plywood has been used for a long time, but formaldehyde-based adhesives are used for the bonding, and the vaporized component is a cause of sick house syndrome that adversely affects the human body. Therefore, not only the shortage of raw materials, but also the formaldehyde adhesive is disliked. The same is true for China plywood because it uses Lauan plywood. In addition, softwood plywood has a problem that a large number of cracks are formed in the base material, and the use of an adhesive must be increased.
Therefore, the presence of a board material such as plywood that suppresses the use of formaldehyde-based adhesive that causes sick house syndrome is desired. In addition, when an adhesive different from a formaldehyde-based adhesive that causes sick house syndrome is used as an adhesive, there is a problem that the cost increases, and provision of an inexpensive material has been desired. And the trunk of the oil palm cut down every year is not utilized effectively, and it is the present condition that it is discarded, and utilization of the trunk of an oil palm was desired.

  Accordingly, the present invention has been made to solve such a problem, which uses an oil palm trunk and suppresses the use of a formaldehyde-based adhesive that causes sick house syndrome. It is an object of the present invention to provide an inexpensive oil palm compacted material by using the components that are used.

The oil palm compact according to the invention of claim 1 is an oil palm base material having a predetermined shape lumbered from the trunk of the oil palm, and a predetermined shape lumbered from the trunk of the oil palm. Another oil palm base material, and the oil palm base material is consolidated by using a resin component and a sugar component contained in the oil palm base material, and the oil palm base materials are integrated with each other. It is joined.
Here, the oil palm base material of a predetermined shape sawn from the trunk of the oil palm and the other oil palm base material may be sawn from the trunk of the same oil palm, or sawn from the trunk of another oil palm. May be. Desirably, the distances from the center of the trunk of the oil palm are matched and overlapped in the direction in which the center sides face each other. The oil palm base material and another oil palm base material are arranged in a stacked manner, but may be connected in the lateral direction.
Further, the oil palm base material is compacted by using a resin component and a sugar component contained in the oil palm base material, and the oil palm base material is integrally joined to each other. It means the use of inherently contained resin and sugar components.

By the way, as the trunk of the oil palm, its varieties, production areas, etc. are not particularly limited. Therefore, a trunk that is scheduled to be discarded is used, but a trunk that is young may be used. Moreover, the drying method of the board obtained as the oil palm base material is not particularly limited, and may be naturally dried or artificially dried, but artificial drying is more expensive. It is.
Here, Lawan, which is generally used for building materials (building materials), etc., forms a secondary xylem composed of cell (dead cell) tissues where movement of water and nutrients has stopped. On the other hand, the trunk of oil palm is composed only of primary tissues of vascular bundles and parenchymal cells. Is extremely high. In addition, the oil palm trunk is rich in saccharides (eg, fructose, glucose, fructooligosaccharides, inositol, etc.). For this reason, when the thickness of the oil palm base material from the oil palm trunk is thick, bacteria such as molds propagate and corrode easily by natural drying, and productivity and commercial value are impaired. On the other hand, when artificially drying, the cost becomes high. Therefore, according to the experimental study by the present inventors, by setting the thickness of the oil palm base material obtained from the oil palm trunk within the range of 3 mm to 35 mm, the product value and productivity due to bacteria such as mold even in natural drying can be obtained. It has been confirmed that the cost can be reduced without causing a decrease.

Furthermore, the lamination of a plurality of sheets in the direction perpendicular to the fiber direction of the oil palm base material means that the surface in the direction perpendicular to the length direction of the fiber such as a vascular bundle, that is, the length of the vascular bundle other than the end face and the end face of the tree It means that the layers are laminated in a plane parallel to the direction, and may be laminated with the same fiber direction, may be laminated with the fiber directions orthogonal to each other, and the number of the sheets may be an odd number. It may be an even number. Further, the total number of stacked layers may be two or more.
In addition, heating and compressing the entire thickness of the dried oil palm base material by applying an external force in a direction perpendicular to the fiber direction in the heated state means at least compressing in the loading direction of the oil palm base material It means that the area corresponding to the mouth end surface is reduced, that is, so-called compression direction is specified and compression processing is performed. This compression processing can be formed, for example, by setting the moisture content of the oil palm base material to be substantially uniform, heating and compressing under predetermined conditions, and fixing, and with the predetermined conditions at this time The temperature, pressure, time, compression speed, and the like to be determined are determined in advance by experiments or the like using the target compression rate as a parameter.

And the oil palm base material is joined by the above-mentioned compaction processing, and the whole air-dry specific gravity is 0.8 or more. All base materials laminated by a plurality of layers are joined together by compaction processing without using an adhesive. It means that the air-drying specific gravity of the whole compacted material in the state is 0.8 or more.
Here, the air-dry specific gravity is the specific gravity when the wood is dried in the air, and is usually expressed by the specific gravity when the moisture content is 15%, and water having the same volume as the weight when the wood is dried. It is the value which compared the weight of. The larger the value, the heavier, the smaller the lighter.
In addition, the air-dry specific gravity of 0.8 or more, which is the whole of the compacted by compaction processing, as a result of repeated experiments by the inventors, as a result of highly compressing the oil palm base material, the air-dry specific gravity is 0.8 or more As a result, the properties of oil palm are changed and the hardness is remarkably increased, and the physical stability is increased with less variation in physical properties and characteristic values such as strength and hardness, dimensional change rate, Based on this knowledge. In other words, it is a characteristic area where the strength and hardness are increased by compression and the variation in physical properties is reduced, indicating that it is a characteristic of compacted wood. In which the air-drying specific gravity does not exceed 0.8 is not included. More preferably, when the air-dry specific gravity is 0.9 or more, the hardness is remarkably increased, and the physical stability is further increased due to less variation in physical properties and characteristic values such as hardness and dimensional change rate. become.
The air-drying specific gravity is ultimately set in consideration of cost, required strength and hardness, etc., but if the compression ratio is too high to increase the air-drying specific gravity, the wood is composed. Since the fiber to be broken is broken and a commercial property is lost, the value of the air-dry specific gravity measured immediately before the crack is generated by high compression becomes the maximum value. That is, the upper limit of the air-dry specific gravity in the present invention is the compression limit of the compacting process, and the maximum value is a finite value. In addition, the numerical value of the air-dry specific gravity is not required to be strict, but is approximate. Naturally, it is an approximate value including an error by measurement or the like, and does not deny an error of several percent.

The oil palm trunk vascular bundle is involved in the physical properties of the air-dry specific gravity. The vascular bundle of the oil palm trunk has a thickness of 0.4 to 1.2 mm, and a conduit is also formed therein. The thickness of the vascular bundle varies greatly depending on the position of the oil palm trunk, and is generally thin on the upper side and thick on the root side. Further, from the position of the cut surface of the oil palm trunk, the cross section of the vascular bundle on the outer peripheral side is thin and gradually becomes thicker toward the center.
The periphery of the vascular bundle is hard with silica crystals attached, and even if the conduit is deformed by consolidation, it is only deformed by about 1/10 to 2/10 of a thickness of 0.4 to 1.2 mm. In consolidation, it changes as a deformation of parenchyma cells excluding vascular bundles. However, even if the vascular bundle is compressed so that the external force is directly applied, the mechanical strength does not change or, conversely, the base material made from the oil palm trunk has a thickness of 1 mm or more after being consolidated. It is desirable that

In this state, that is, when the vascular bundle of the oil palm trunk is 1.2 mm in thickness, the vascular bundle that has been compacted is about 0.8 to 0.9 mm, and the presence of parenchyma cells excluding the vascular bundle is 0. Since the thickness is about 1 to 0.2 mm, the mechanical strength in the compacted state is increased.
However, when compressed at a pressure at which the vascular bundle breaks, the mechanical strength does not change, or the mechanical strength decreases, so the thickness of the compacted oil palm base material needs to be at least 1.0 mm. . For example, when the thickness of the compacted oil palm base material is 0.8 mm or less, a 0.4 mm vascular bundle is safe, but even if a 1.2 mm vascular bundle is somewhat reduced in diameter, it is destroyed. There is a possibility. Therefore, if the thickness of the compacted oil palm base material is 1.0 mm or more, it is natural that the diameter of the vascular bundle is somewhat reduced, so that it is not broken or cut.

  The oil palm compact according to the invention of claim 2 is provided with an oil palm base material having a predetermined shape made from the trunk of the oil palm, and a predetermined shape made from the trunk of the oil palm. Another oil palm base material having a shape, and the oil palm base material is consolidated by using a resin component and a sugar component contained in the oil palm base material, and the oil palm base materials are integrated with each other. It is joined.

Here, the oil palm base material of a predetermined shape sawn from the trunk of the oil palm and the other oil palm base material may be sawn from the trunk of the same oil palm, or sawn from the trunk of another oil palm. May be. Desirably, the distance from the center of the trunk of the oil palm is adjusted to face the center side. The oil palm base material and the other oil palm base material are arranged side by side, but may be laminated in multiple layers.
Further, the oil palm base material is compacted by using a resin component and a sugar component contained in the oil palm base material, and the oil palm base material is integrally joined to each other. It means the use of inherently contained resin and sugar components.
And, the external force which joins the oil palm base materials together by using the resin component and the sugar component contained in the oil palm base materials to be compacted between the oil palm base materials which are arranged side by side is the oil palm base material. It is good also as a perpendicular direction with respect to this surface, and good also as a horizontal direction with respect to the surface of an oil palm base material.

The oil palm compact material according to the invention of claim 3 is disposed in an oil palm base material of a predetermined shape made from the trunk of the oil palm, and overlapped with the oil palm base material, or disposed side by side, A wood base material made of wood other than the oil palm, the oil palm base material and the wood base material are consolidated using a resin component and a sugar component contained in the oil palm base material, and the oil A palm base material and the wood base material are integrally joined.

Here, the oil palm base material having a predetermined shape made from the trunk of the oil palm may be one or more. At this time, another oil palm base material may be lumbered from the trunk of the same oil palm, or may be lumbered from the trunk of another oil palm. Desirably, the distance from the center of the trunk of the oil palm is adjusted to face the center side. It is desirable that the oil palm base material and the wood base material are multilayered, and the wood base material has a design surface.
In addition, the oil palm base material and the wood base material are consolidated using a resin component and a sugar component contained in the oil palm base material, and the oil palm base materials are integrally joined to each other. It means the use of the resin component and the sugar component that the base material originally contains. Of course,
When increasing the amount of the adhesive that joins the oil palm base material and the wood base material, the resin palm and sugar components of the oil palm base material to be joined are pulverized with other oil palm trunks, etc. The resulting resin component and sugar component may be added and used.

The compaction of the oil palm compact material according to the invention of claim 4 regulates the both oil palm base materials so as not to extend in the surface direction of the oil palm base material, On the other hand, a vertical pressure is applied.
Here, the regulation that does not extend in the surface direction of the oil palm base material is to restrict at least the periphery of the both oil palm base materials and prevent the oil palm base materials from spreading in the surface direction.

The consolidation of the oil palm compact according to the invention of claim 5 is carried out by controlling the pressure under a predetermined temperature condition, maintaining it for a predetermined time, and then releasing the pressure and maintaining the compressed state. It is fixed to.
Here, the consolidation refers to controlling the pressure under a predetermined temperature condition according to the type of the base material, maintaining it for a predetermined time, and lowering the pressure to a predetermined temperature before releasing the pressure and fixing. It consists of a series of operations.

The oil palm compact material according to claim 1 is provided by placing another oil palm base material of a predetermined shape on an oil palm base material of a predetermined shape made from a trunk of the oil palm, The space between the oil palm base materials is consolidated using a resin component and a sugar component contained in the oil palm base material, and a plurality of the oil palm base materials are joined together.
An oil palm base material made from an oil palm trunk of a predetermined length and another oil palm base material are compressed and fixed, and are integrally joined. At this time, an oil palm compacted material joined with natural products using the resin component and sugar component contained in the oil palm base material is obtained. Since the amount of the resin component and the sugar component contained in the oil palm base material at the time of joining from between the oil palm base materials is ensured without using another adhesive, the joining of the oil palm base material Since the oil palm base material can have any thickness, it is possible to form an oil palm compacted material having a required thickness according to the intended use.
Therefore, the oil palm trunk is used, and the use of formaldehyde-based adhesives that cause sick house syndrome is suppressed, and the components inherent to oil palm are used to provide an inexpensive oil palm compact. It is done.

The oil palm compacted material according to claim 2 is provided with an oil palm base material having a predetermined shape made from an oil palm trunk, and an oil palm base material provided with the oil palm base material. The oil palm base material is consolidated using the resin component and sugar component contained in the oil palm base material, and the oil palm base materials are joined together. It is.
An oil palm base material made from an oil palm trunk of a predetermined length and another oil palm base material are compressed and fixed, and are integrally joined. At this time, an oil palm compacted material joined with natural products using the resin component and sugar component contained in the oil palm base material is obtained. Since the amount of the resin component and the sugar component contained in the oil palm base material at the time of joining from between the oil palm base materials is ensured without using another adhesive, the joining of the oil palm base material Since the oil palm base material can be formed to an arbitrary thickness, an oil palm compacted material having a required area can be formed according to the intended use.
Therefore, the oil palm trunk is used, and the use of formaldehyde-based adhesives that cause sick house syndrome is suppressed, and the components inherent to oil palm are used to provide an inexpensive oil palm compact. It is done.

The oil palm compact material according to claim 3 is an oil palm base material having a predetermined shape made from a trunk of the oil palm, and the oil palm base material disposed on the oil palm base material so as to overlap with the oil palm base material. A wood base material made from other wood, and the oil palm base material and the wood base material are consolidated using a resin component and a sugar component contained in the oil palm base material, and the oil palm The substrates are joined together.
Therefore, an oil palm base material made from a trunk of an oil palm having a predetermined length, another oil palm base material, and the wood base material are compressed, fixed, and integrally joined. At this time, an oil palm compacted material joined with natural products using the resin component and sugar component contained in the oil palm base material is obtained. Since the amount of the resin component and sugar component contained in the oil palm base material when joining from among the oil palm base materials also joins the wood base material, it is ensured without using other adhesives. Since the oil palm base material and the wood base material can be easily joined and the oil palm base material can have any thickness, an oil palm compacted material having a required area can be formed according to the intended use. Moreover, even if the amount of the resin component and the sugar component contained in the oil palm base material during joining from between the oil palm base materials is insufficient to join the wood base material, other adhesives may be used. The amount of oil to be used is reduced, the oil palm base material and the wood base material can be easily joined, and the oil palm base material can have any thickness. A material can be formed.
In addition, for joining the wood base and the oil palm base, a resin component and a sugar component obtained by pulverizing other oil palm trunks and the like into a resin component and a sugar component of the oil palm base to be joined. May also be used.
Therefore, the oil palm trunk is used, and the use of formaldehyde-based adhesives that cause sick house syndrome is suppressed, and the components inherent to oil palm are used to provide an inexpensive oil palm compact. It is done.

  The consolidation of the oil palm compact material according to claim 4 regulates the both oil palm base materials so as not to extend in the surface direction of the plates, and the pressure in the direction perpendicular to the surfaces of the both oil palm plates is controlled. Therefore, in addition to the effect of any one of claims 1 to 3, pressure in the vertical direction is efficiently applied to the surfaces of the two oil palm plates, and the oil palm compacted material The whole can be formed by one consolidation.

  The compacting of the oil palm compacted material according to claim 5 is performed by controlling the pressure under a predetermined temperature condition, maintaining the pressure for a predetermined time, depressurizing, and fixing. In addition to the effect described in any one of 4 above, a stabilized oil palm compact with reduced hysteresis is obtained.

FIG. 1 is an explanatory diagram in the case of producing an oil palm base material from an oil palm trunk in the oil palm compacted material of Embodiment 1 of the present invention (a), an explanatory diagram (b) showing a fiber state of the oil palm trunk, It is explanatory drawing (c) of the board lumbered from the oil palm trunk. FIG. 2 is an explanatory diagram showing the density and size of the vascular bundle from the outer periphery of the oil palm trunk toward the center in the oil palm compacted material according to the embodiment of the present invention, where (a) divides the center from the bark into four equal parts. FIG. 4 is a photomicrograph of the outermost sampling position, (b) an adjacent position divided into four equal parts, (c) an adjacent position divided into four equal parts, and (d) a center position divided into four equal parts. FIG. 3 is an explanatory view of a cross section of the oil palm base material in the oil palm compact material according to the first embodiment of the present invention before compacting (a) and after compacting (b). FIG. 4 is an explanatory view showing a joined state of an oil palm base material produced from an oil palm trunk in the oil palm compacted material according to Embodiment 1 of the present invention. FIG. 5 is an explanatory view showing a developed state of the arrangement of the oil palm base material in the oil palm compacted material of Embodiment 1 of the present invention. FIG. 6 is an explanatory view showing a laminated state (a) and a compacted state (b) of the oil palm compacted material according to Embodiment 1 of the present invention. FIG. 7 is an explanatory view showing a developed state of the arrangement of the wood base material and the oil palm base material in the oil palm compacted material of Embodiment 2 of the present invention. FIG. 8 is a cross-sectional view showing a schematic configuration of an adhesive plate manufacturing apparatus for manufacturing the oil palm compacted material according to Embodiment 1 of the present invention. FIG. 9 is an explanatory diagram for producing the oil palm compacted material of Embodiment 1 of the present invention, (a) is an explanatory diagram of supply of unprocessed wood as a raw material, and (b) is an explanation according to a heating compression start state. (C) is an explanatory view of the sealed heat compression start state, (d) is an explanatory view of a vapor pressure control process in the closed heated compression state, (e) is an explanatory view of the sealed cooling state, and (f) is compacted. It is explanatory drawing of taking out the timber (consolidation processing material). FIG. 10 is an explanatory view of a frame used in the method for producing the oil palm compacted material of Embodiment 1 of the present invention, and is a perspective view (a) and a sectional view (b) taken along the cutting line AA. FIG. 11 is a flowchart illustrating a method for manufacturing the oil palm compacted material according to the first embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that, in the embodiments, the same symbols and the same reference numerals in the drawings are the same or corresponding functional parts, and therefore, redundant description thereof is omitted here.

[Embodiment 1]
First, when the oil palm trunk used in the embodiment of the present invention is cut out so as to produce ordinary wood grain and mesh, fibers (vascular bundles) are arranged in a grid as shown in FIG. It becomes a surface. That is, there are no annual rings like Japanese timber and cedar, and vascular bundle fibers of 0.4 to 1.2 mm extend in the length direction of the oil palm trunk as in the case of the tatami mat.
The components of the oil palm trunk are slightly different depending on the place of production, but the difference is slight, and generally 30.6% by weight of cellulose, 33.2% by weight of hemicellulose, lignin (total lignin 28.5% by weight = Klarson lignin 24 7% by weight + 3.8% by weight of acid-soluble lignin), 3.6% by weight of extracted components, 4.1% by weight of ash, and is characterized in Chemical Composition of the Oil Palm (Elaeis guineensis) (Journal of the Japan Institute of Energy, 87, 383-388 (2008)).
Between visible fibers of 0.4 to 1.2 mm, that is, between the vascular bundle A (see FIG. 3) and the vascular bundle A are parenchymal cells C (see FIG. 3), and resin components such as lignin and cellulose It is united by sugar components such as hemicellulose, and few pores.

FIG. 1 illustrates an oil palm base material W produced from a predetermined length of an oil palm trunk WD to a predetermined width, thickness, and length shown in FIG.
Even if the oil palm trunk WD is cut so as to obtain a grid and a grain like wood lumber, there is no annual ring as shown in FIG. 1 (c), and the oil palm trunk WD as shown in FIG. 1 (b). Since only a bundle of fibers is formed in the length direction, oil palm as a grid-like lumber plate can be obtained as shown in FIG. It becomes the base material W (W1,... W5, X1,... X5). Since this kind of lumbered oil palm base material W and oil palm base material Y are used on the exposed surface as a design surface, they are usually formed to a thickness of 3 mm or more before consolidation. Here, in terms of the strength of the bonding force, it is desirable to compress the average compression ratio (arithmetic mean = arithmetic mean) of compression processing at 50% or more, but there is no disturbance in the fiber direction. If the compression rate is 45% or more, bonding is performed satisfactorily.

Oil palm base materials W1,..., W5 having a predetermined thickness (in particular, when the number of oil palm base materials W is not intended, they may be simply referred to as oil palm base materials W) are cut out. , Oil palm bases Y1,..., Y5 having a predetermined thickness (in particular, when the number of oil palm bases Y is not intended, they may be simply referred to as oil palm bases Y).
In addition, when it is not necessary to distinguish the oil palm base material W and the oil palm base material Y, they are described as the oil palm base material W.

  Here, when the oil palm base material W and the oil palm base material Y are formed to have a thickness of 3 mm or more before the compacting process, the compression ratio is 0.9 mm when compressed at 70%, and the compression ratio is 65% when compressed. When compressed at 1.05 mm and a compression rate of 60%, it becomes 1.2 mm. However, as shown in FIG. 2, the vascular bundle A of the oil palm trunk has a thickness of 0.4 to 1.2 mm, and a conduit is also formed therein. The thickness of the vascular bundle A varies greatly depending on the position of the oil palm trunk WD. In general, the thickness is thin on the upper side, the density is dense, and thick on the root side, and the density is sparse. Further, from the position of the cut surface of the oil palm trunk, the cross section of the vascular bundle on the outer peripheral side is narrow, the density is dense, gradually becomes thicker toward the center, and the density is sparse.

As shown in FIG. 3, the vascular bundle A is hard because silica crystals adhere to the periphery of the vascular bundle A, and even if the conduit B is deformed by consolidation, the conduit B remains deformed. Only about 1/10 to 2/10 of a thickness of 2 mm. In the consolidation process, the whole changes as deformation of the parenchymal cells C excluding the vascular bundle A. However, even if the vascular bundle A is compressed so that an external force is directly applied to the vascular bundle A, the mechanical strength does not change or, conversely, the oil palm base material W or the oil palm base material Y made from the oil palm trunk WD. It is desirable that the compacted thickness is 1 mm or more.
That is, in this state, when the vascular bundle A of the oil palm trunk WD has a thickness of 1.2 mm, the presence of the parenchyma cells C excluding the vascular bundle A that has been consolidated is about 0.1 to 0.2 mm or more. Therefore, the mechanical strength of the consolidated state is increased. Most of the deformation of about 1/10 to 2/10 of the thickness of 0.4 to 1.2 mm is due to the compression of the conduit B.

Therefore, the thickness of the oil palm base material W and the oil palm base material Y after the compacting is such that the thickness of the vascular bundle A having a thickness of 0.4 to 1.2 mm does not break down to obtain the mechanical strength. Efficient. However, if the thickness of the oil palm base material W and the oil palm base material Y after the consolidation process is thick, the vascular bundle A having a thickness of 1.2 mm can be arranged in any manner. However, in the case where the thickness after the consolidation process is thin, the state where the vascular bundles A having a thickness of 1.2 mm are arranged in a horizontal row is the minimum thickness.
Therefore, the thickness of the oil palm base material W and the oil palm base material Y after the compacting is preferably 1.0 mm or more in consideration of the compressibility of the vascular bundle A and the parenchymal cells C.

Furthermore, in Fig.1 (a), oil palm base material W1, ..., W5, oil palm base material Y1, ..., Y5 is made into oil palm base with respect to the surface of the center direction of the oil palm base material W1. The surface in the center direction of the material Y1 is made to face, and similarly, the surface in the center direction of the oil palm base material Y2 is made to face the surface in the center direction of the oil palm base material W2, and When the surface in the center direction of the oil palm base material Y3 is opposed to the surface, the size and density of the oil palm base material W, the vascular bundle of the oil palm base material Y, the thickness and shape of the conduit, and the distribution of parenchymal cells The states correspond to each other and cancel each other in the direction in which the respective bending occurs.
That is, when the center directions are aligned with each other and the distances from the centers are the same or substantially the same, compaction processing that does not easily cause distortion can be performed.
In this way, by making the center directions face each other and making the distance from the center the same or substantially the same, the distribution of the air-dry specific gravity after drying is made uniform, and sufficient heat compression is achieved. The difference in specific gravity between them becomes small, and the difference in the dimensional change rate after commercialization becomes small, so that the stability of the dimensional shape after commercialization increases.

The formed oil palm base materials W1,..., W5 and the oil palm base materials Y1,... Y5 are formed as shown in FIG. Laminate palm base material W2 and oil palm base material W3, and use resin component and sugar component contained between oil palm base materials W1, W2, and W3 between the upper and lower sides of oil palm base materials W1, W2, and W3 Thus, the oil palm base materials W1, W2, and W3 can be joined together.
Also, as shown in FIG. 4 (b), in the case of a narrow material, it is laminated like oil palm base materials W11,... W13, W21,... W23, W31,. When the consolidation is restricted to extend in the surface direction at the outermost periphery, an oil palm compact with a sum width of the oil palm base materials W11,... W13 is obtained. The joint point y in this example is a common lateral position.

And as shown in FIG.4 (c), in the case of a material with a narrow width | variety, when not making the compression rate in the case of a compacting process high, oil palm base material W11, ... W13, W21, ... When the layers are laminated like W23 and the joint point y is set at an intermediate position like a stone slab, the mechanical strength is easily obtained as compared with the case of FIG. 4B.
4A to 4C show the oil palm base materials W11,... W13, W21,... W23, W31,. It is fixed by applying pressure in the direction.

However, the oil palm base material W can be joined also in the horizontal direction, that is, in the left-right direction by the compressive force in the vertical direction.
FIG. 4 (d) shows an example in which the adjacent joint portion y is in contact with each other as in the oil palm base material W1 and the oil palm base material W2 and is fixed by applying pressure in the vertical direction, that is, the vertical direction. It is. At this time, the oil palm base material W1 and the oil palm base material W2 are horizontally horizontal with a compressive force only in the vertical direction because the resin component and the sugar component inherently contained in the oil palm base material diffuse in the vertical direction and the horizontal direction. The joining point y in the direction is also joined. Of course, it is necessary to be restricted from extending in the surface direction at the outermost periphery.

Further, in order to further increase the joining force at the joining point y, as shown in FIG. 4E, the vertical joining stages y1 and y3 and the horizontal joining stage y2 are formed, and the horizontal joining stage y2 Since the compressive force in the vertical direction is directly applied, the forces in the vertical direction and the horizontal direction can be applied to the vertical joining stages y1 and y3 and the horizontal joining stage y2.
Further, in order to increase the contact area of the horizontal junction stage y2, the vertical junction stages y1 and y3 are made shallower and the horizontal junction stage y2 is inclined longer by inclining in FIG. It can be made wider than the straight horizontal joining step y2. As a result, the reliability of bonding can be increased. The reason why the joining steps y1 and y3 in the vertical direction are eliminated and only the joining step y2 is not used is to prevent the end portion from being pushed.

Further explanation will be given. FIG. 4 (f) shows that the oil palm base material W has a joint stage y2 in which the ends of the oil palm base material W1 and the oil palm base material W2 are inclined, and the end position thereof. It is formed from the formed joining stage y1 and joining stage y3 of about several mm. Here, when a compressive force in the vertical direction is applied to the surfaces of the oil palm base material W1 and the oil palm base material W2, the joint stages y2 and the joint stages y1 and the joint stages y3, which are inclined parts, are joined, It becomes one piece. In particular, the color of the oil palm trunk WD is slightly different depending on the dry state, the heating temperature, etc., but a single plate without a connecting portion is formed only by aligning the growth years and the heating temperature.
At this time, in the state where the pressure is integrally applied while being placed on the upper surface of the pre-pressing bonding material NW, and the fibers are integrally connected as shown in FIG. 4 (f), the fiber direction is a constant direction. Can be realized.

As described above, the composition for joining the oil palm base material W of the present embodiment includes a resin component such as lignin and the like, cellulose, hemicellulose, etc., which the oil palm base material W made from the oil palm trunk WD having a predetermined length. The saccharide component. In addition, although the inventors' analysis has recognized that the main component is a resin component such as lignin and a saccharide component such as cellulose and hemicellulose, it is possible that the involvement of other components will become clear as the analytical ability improves. There is also. Even if it is small, it cannot be denied that there may be other components that contribute to consolidation.
The oil palm base material W produced from the oil palm trunk WD having a predetermined length is dried, and a predetermined number of layers are stacked and / or provided, and the temperature of the oil palm base material W is increased, and the stacking and / or provided is provided. The compressed oil palm base material W1 is compressed by applying a compressive force in a direction perpendicular to the surface of the oil palm base material W2, and maintained at a predetermined temperature with a predetermined compressive force for a predetermined time, In the oil palm compacted material to be joined by performing the fixing process of lowering, the joining for integrally bonding the oil palm base material W is performed by bonding the surface of the oil palm base material W cut to a predetermined thickness, width and length. Resin component such as lignin containing oil palm trunk WD itself and the plurality of oil palm substrates W by controlling the temperature and compressive force of the plurality of oil palm substrates W, and a bonding surface having a function Cellulose, in which the saccharide component of the hemicellulose and the like.

  Accordingly, since the oil palm trunk WD has no nodes and no annual rings, when the oil palm base material W is produced by sawing to a predetermined thickness, a homogeneous oil palm base material W is obtained. As a result, the oil palm base material W is obtained. The compact PW as the oil palm compact composed of W is homogeneous. Moreover, since the joining force is changed by the resin component and sugar component contained in the oil palm trunk WD itself depending on the applied temperature and pressure, an arbitrary adhesive force can be obtained by controlling the applied temperature and pressure. And since a plurality of oil palm base materials W are joined by a resin component and a sugar component contained in the oil palm trunk WD itself to form a consolidated material PW, other synthetic resins and synthetic rubbers are used as adhesives. Since it is not used, it can be restored naturally. The oil palm leaves, empty fruit bunches, roots, etc. at this time are cut into chips and may be treated by an organic waste fermentation treatment method that is composted (composted) by aerobic bacteria treatment, In particular, empty fruit bunches may be subjected to other practical treatments. Moreover, it can also grind | pulverize finely and can extract components, such as a cellulose, hemicellulose, and lignin, and can also use it.

Next, manufacture of the oil palm compact material which comprises the laminated plywood concerning this Embodiment is demonstrated.
For example, the oil palm base material W is cut as a single-length oil palm trunk WD from a single trunk that has been grown for 20 years or more, and then sawed into a plate or a pillar, and in the present embodiment, FIG. As shown to a), plate-shaped oil palm base material W and oil palm base material Y are cut out. This is a base material process for cutting out the oil palm base material W and the oil palm base material Y having a predetermined length, thickness and width.
That is, in the base material process, a base Z having a predetermined thickness, width, and length shown in FIG. 1C is cut out from the oil palm trunk WD, and dried, and the oil palm base having a predetermined area and predetermined thickness is dried. The material W and the oil palm base material Y are made.

Oil palm leaves, empty fruit bunches, roots, and the like may be processed by an organic waste fermentation treatment method that is cut into chips and composted (composted) by aerobic bacteria treatment. The fruit bunches may be subjected to other practical treatments. Moreover, it may grind | pulverize finely and may extract components, such as a cellulose, hemicellulose, and lignin.
In particular, in the present embodiment, the oil palm base material W and other wood base materials are joined to the resin component and sugar component of the oil palm base material W to be joined with other oil palm tree trunks, foliage, fruits. A good conclusion was obtained using a resin component and a sugar component obtained by powdering the tuft.

  Usually, drying is started when the oil palm base material W having a predetermined area and a predetermined thickness is cut out in the base material step. However, drying may be performed after the unit number of pieces of lumber for producing the predetermined compacted material PW. In general, since lumbering is performed by a flow operation, it is desirable to start drying at the time when the oil palm base material W is formed from the oil palm trunk WD from the viewpoint of securing the drying time. If this drying process demonstrates in the example of Fig.4 (a), it will become the joining arrangement | positioning process which arrange | positions the pre-pressurizing joining material NW which produces the compacting material PW, or the process before it.

  The oil palm base material W having a predetermined area and a predetermined thickness is arranged in various arrangement states as shown in FIGS. 4A to 4F in the joining arrangement process. The arrangement of the oil palm base material W that constitutes the pre-pressurizing bonding material NW in FIG. 4 has been described in the case of only the oil palm base material W, but wood obtained by sawing wood other than the oil palm base material into a plate shape. The same applies to the base material. Of course, the arrangement state of FIG. 4 can also be made into a predetermined length of lauan, china or conifer on one or both sides.

In general, since the cutting is performed by a flow operation, it is desirable to start drying when the oil palm base material W is formed from the oil palm trunk WD from the viewpoint of ensuring the drying time. This drying step is drying after the oil palm base materials W1, W2, W3 having a predetermined area and a predetermined thickness are cut out so as to overlap with the pre-pressing bonding material NW for creating the consolidated material PW. This is desirable because it is difficult to remove chips at the ends when the oil palm base materials W1, W2, and W3 are cut out, but there is no significant difference after the oil palm base material W is formed from the oil palm trunk WD. In any case, the process of drying these oil palm base materials W becomes a drying process.
The oil palm base material W having a predetermined area and a predetermined thickness is cut out from the oil palm base materials W1, W2, and W3 having a predetermined area and a predetermined thickness, as shown in FIG.

Then, it becomes a joining arrangement | positioning process which performs lamination | stacking and / or side-by-side arrangement | positioning of the oil palm base materials W1, ..., W5 as shown in FIG.
In the present embodiment, as shown in FIG. 4, a total of three oil palm base materials W1, W2, and W3 having a predetermined area and a predetermined thickness are laminated to form a pre-pressurizing bonding material NW. ).
In the pre-pressurizing bonding material NW, the oil palm base materials W1, W2, and W3 are cut out from the oil palm trunk WD described with reference to FIG. 4A, and the oil palm base materials W1 and W2 shown in FIG. , W3 are stacked.
The outer shapes of the three oil palm base materials W1, W2, and W3 having a predetermined area and a predetermined thickness may be formed by cutting, or may be formed by cutting a fine tooth saw. Any of the properties of oil palm may be used, but cutting is more efficient from the viewpoint of workability.

4A, as shown in FIG. 5, the pre-pressing bonding material NW is loaded on the oil palm base materials W1 and W3 and the oil palm base material W2 such that the length directions of the fibers cross each other. Is. Any one or two of the oil palm base materials W1, W2, and W3 may be a wood base material made from wood other than oil palm.
Three oil palm bases W1, W2, W3 having a predetermined area and a predetermined thickness are cut out, and until the position is adjusted to the loaded state of the pre-pressurizing bonding material NW as shown in FIG. It is necessary to apply low warm air to both surfaces of the oil palm base materials W1, W2, and W3 having a predetermined area and a predetermined thickness for drying. Since the drying of the three oil palm base materials W1, W2, and W3 proceeds until it is sent to the production line for laminating the three oil palm base materials W1, W2, and W3 as the pre-pressurizing bonding material NW, As shown in FIG. 3 in a dry state, it can be laminated as a pre-pressurizing bonding material NW. In order to maintain this laminated state, in order to prevent the spread in the surface direction of the oil palm base materials W1, W2, and W3, a frame body 20 that positions each side of the three oil palm base materials W1, W2, and W3 ( It is desirable to set a positioning hole 18 (see FIG. 8) or the like. For the sake of simplicity, FIG. 8 and FIG.
Thus, the process arrange | positioned in the position which joins the oil palm base materials W1, W2, W3 dried by the said drying process in the predetermined | prescribed state is called a joining arrangement | positioning process here.

  The positioning hole 18 has an outer diameter that matches the outer shape of the oil palm base material W, and the three oil palm base materials W1, W2, and W3 are placed in the positioning hole 18. Then, with respect to the laminated oil palm base material W heated by the heating step, the upper press panel 10A and the upper press panel 10A are controlled while being restricted by the positioning holes 18 from extending in the parallel direction along the surface of the oil palm base material W. A compression force in a direction perpendicular to the surface of the oil palm base material W is applied to the lower press panel 10B to perform compression molding for a predetermined time. Although not shown correctly, the three oil palm base materials W1, W2, and W3 are compressed in the positioning hole 18. The surface of the upper press panel 10A that presses the three oil palm substrates W1, W2, and W3 is equal to the upper surfaces of the three oil palm substrates W1, W2, and W3. Naturally, the bottom surfaces of the three oil palm base materials W1, W2, and W3 have the same dimensions so that they can be fitted to the lower press panel 10B.

First, a method for directly molding the consolidated material PW in FIG. 6B from the pre-pressing bonding material NW in FIG. 6A will be described.
Here, the consolidated compacted material PW shown in FIG. 6 (b) is a material laminated as a pre-pressing bonding material NW and compressed by applying a predetermined compressive force under a predetermined temperature condition for a predetermined time. After the lapse of time, the temperature is lowered to a predetermined temperature and fixed, and then the pressure is released, which becomes an oil palm compact.
That is, a compression process is performed in which a compression force in a direction perpendicular to the surface of the oil palm base material W is applied to the laminated oil palm base materials W1, W2, and W3 heated by the heating process. After pressing for a predetermined time at the temperature, the temperature supplied in the heating process is lowered, and a compacted compact PW is obtained through an immobilization process in which the compressed state is maintained.

Here, the step of heating to raise the temperature of the laminated oil palm base material W after the arrangement step is called a heating step, and the surface of the oil palm base material W laminated by being heated by the heating step. A process of applying a compressive force perpendicular to the direction is called a compression process. Then, after pressing for a predetermined time in the compression step, the temperature supplied in the heating step is lowered, and the step of cooling and fixing at normal temperature or slightly lower than that is fixed in a consolidated state. In this sense, it is called an immobilization process.
Moreover, the method of directly molding the consolidated material PW of FIG. 6B from the pre-pressing bonding material NW of FIG. 6A is performed once in the placement step, the heating step, the compression step, and the fixing step. This is only a continuous process.

FIG. 6B shows a compacted material PW in FIG. 6B in which the pre-pressing bonding material NW in FIG. 6A is consolidated by a mold. In particular, in the present embodiment, the compression material PW is compressed from the beginning with a die so as to finally form the consolidated material PW. From the pre-pressing bonding material NW in FIG. 6A, the oil in FIG. The palm base material W is consolidated and formed into a consolidated material PW.
Furthermore, a procedure for manufacturing the consolidated material PW according to the embodiment of the present invention will be described with reference to FIGS.
As shown in the flowchart of FIG. 11, first, in the base material process of step S <b> 10 in which an oil palm base material W having a predetermined thickness, width and length is made from an oil palm base WD having a predetermined length, the oil palm stem WD is processed. Then, an oil palm base material W having a desired thickness is cut out. Then, in the drying step of Step S11, the oil palm base material W is dried within a range of moisture content of 5% to 30% and dried.

  Here, the drying method of the oil palm base material W in the drying step includes artificial drying or natural drying (sun drying). As the artificial drying, for example, the hot air is used as the oil palm base material W by using a dryer such as a steam dryer having a high temperature steam as a heat source and a built-in dehumidifier including a refrigerator for removing humidity. An external heating method for heating from the outside of the oil palm base material W by spraying it on the surface or heating and squeezing with a press board, an internal heating method for heating the oil palm base material W from the inside by applying dielectric heating, etc. However, as is well known, natural drying is generally less expensive than artificial drying.

However, when the oil palm base material W is naturally dried, particularly when the oil palm base material W is thick, bacteria such as mold are prone to grow and corrode, and productivity and commercial value are impaired. This is commonly used for building materials, for example, Lauan wood forms a secondary xylem composed of cell (dead cell) tissue in which the movement of water and nutrients has stopped. This is because palm stem WD is composed only of primary tissues of vascular bundles and parenchymal cells, and most cells centering on parenchymal cells are living cells in which water and nutrients are transferred, and the moisture content is extremely high. Furthermore, it was found that oil palm trunk WD (oil palm trunk) is rich in saccharides (eg, fructose, glucose, fructooligosaccharides, inositol, etc.). When the thickness of the oil palm base material W obtained from the trunk of the palm is thick, bacteria such as mold are proliferated and corroded by natural drying, and productivity and commercial value are impaired.
Therefore, according to the experiments of the present inventors, by setting the thickness of the oil palm base material W obtained from the oil palm trunk WD to a range of 20 mm or less, the product value and productivity by bacteria such as mold even in natural drying can be obtained. It has been confirmed that the cost can be reduced without causing a decrease. In addition, this thickness is equivalent to the thickness of 3.5 mm-7.0 mm after a compaction process, when a compression rate is 65%. Further, when the compression ratio is 70%, the thickness corresponds to 3.0 mm to 6.0 mm after the consolidation.

Furthermore, according to experiments by the present inventors, when the thickness of the oil palm base material W obtained from the oil palm trunk WD is less than 3 mm (when it is less than 0.9 to 1.1 after consolidation), the thickness Since it is thin, it is easy to cut when peeled, and when it exceeds 20 mm, it is difficult to dry uniformly to the inside, and when it is stretched, cracks occur and the fiber is easily cut, so deformation after compaction processing described later, It has been confirmed that bulging is likely to occur, and cracks and the like are likely to occur because the curved surface is replaced with a straight line. In addition, about a crack, it joins in a close_contact | adherence state at the time of a compaction process, and there is no problem as long as a mold | fungi does not arise in the crack generation | occurrence | production location.
For this reason, the oil palm base material W within the range of 3 mm or more and 20 mm or less in thickness from the oil palm trunk WD is lumbered, and the product value and productivity are not reduced by bacteria such as mold even at natural drying, and at low cost. Further, it can be dried, and the cutting operation is easy, and the dimensional shape stability after the compacting process described later is high.
In addition, Preferably, the thickness of one oil palm base material W produced as a plate material from the oil palm trunk WD is within a range of 6 mm or more and 150 mm or less. This thickness corresponds to a thickness of 2.1 mm or more and 53 mm or less after the compacting when the compression ratio is 65%. Further, when the compression ratio is 70%, the thickness corresponds to 1.8 mm to 45 mm after the consolidation.

  In addition, when the moisture content of the dried oil palm base material W is less than 5% as a result of repeated experiments by the present inventors, the drying within the range of the moisture content of 5% to 30% is described later. Sufficient chemical change cannot be caused by processing, and when the surface becomes too dry and gets wet with water after consolidation, the phenomenon that the compressed part returns to its original thickness shape, so-called fixation On the other hand, when the moisture content exceeds 30%, it was difficult to uniformly dry to the inside, and it was confirmed that damage, such as cracking and rupture, deformation, swelling, etc. are likely to occur after consolidation. Therefore, the setting is made based on this. That is, it is desirable that the moisture content of the oil palm base material W is substantially uniform over the entire thickness, so that the entire thickness is compacted with a substantially uniform compression rate, and the moisture content is 5% to 30%. Within the range is preferred. More preferably, the water content is in the range of 13% to 18%. In addition, a moisture content is measured using measuring instruments, such as a high frequency moisture content meter, for example.

  In this embodiment, a wood base material made from wood other than the oil palm is not used, but the wood base material, for example, persimmon, cedar, rice bran, persimmon leaf, rice cedar, Karamatsu, red pine, chestnut, persimmon, In the case of using board materials that make use of wood such as straw, straw, cherry blossoms, straw, straw, etc., as in the former, the base material is formed in step S31, the drying process is performed in step S32, and the oil palm base material in step S12 The same joining arrangement process as W is entered.

In the joining and arranging step of step S12 in which a plurality of dried oil palm substrates W are stacked, a plurality of oil palm substrates W are arranged in a predetermined state with respect to the oil palm substrates W dried in the drying step of step S11. The bonding material NW before pressurization is obtained by the bonding arrangement process in step S12. The pre-pressurizing bonding material NW has the same outer shape, but the oil palm base materials W in the stacking direction are merely overlapped by their own weight.
Here, an adhesive plate manufacturing apparatus MC that performs consolidation processing of the pre-pressurizing bonding material NW in which the oil palm base material W is disposed will be described with reference to FIG.

  In FIG. 10, the adhesive plate manufacturing apparatus MC for manufacturing the consolidated material PW of the present embodiment is mainly divided into two parts, that is, an upper press board 10A made of a flat mold and a lower press board 10B made of a flat mold. The press body 10 that forms the internal space IS and the positioning hole 18 by the structure, and the peripheral portion 10a of the upper press panel 10A that faces the peripheral portion 10b of the lower press panel 10B, are pressurized to the lower press panel 10B. A positioning hole 18 that defines and regulates the position of the front bonding material NW is formed, and a seal member 11 that seals the internal space IS and the positioning hole 18 within a predetermined vertical movement range of the upper press board 10A, and the upper press board 10A. A pipe 12 having a pipe port 12a that communicates with the internal space IS and the positioning hole 18 from the upper surface side thereof and supplies steam into the internal space IS and the positioning hole 18; A valve V4 on the side, a pipe 13 having a pipe port 13a that communicates from the side surface side of the lower press panel 10B into the internal space IS and the positioning hole 18 and discharges water vapor from the internal space IS and the positioning hole 18; It consists of a pressure gauge P2 for detecting the vapor pressure in the pipe 13, a valve V5 on the downstream side thereof, a drain pipe 14 connected to the valve V5, and the like.

  The press board 10 has a plane size capable of compressing the entire specific surface perpendicular to the surface of the pre-pressing bonding material NW, that is, the entire surface to be compressed of the pre-pressing bonding material NW, The material is not particularly limited, but is formed of a material such as stainless steel or aluminum so that the wood is not blackened due to iron ion contamination, or the contact surface with the pre-pressing bonding material NW is plated. It is given. Furthermore, the material of the seal member 11 that seals the internal space IS and the positioning hole 18 is not particularly limited, but usually, silicon rubber, silicon resin, etc. excellent in heat resistance and water resistance are used. .

  Further, in the upper press board 10A and the lower press board 10B of the press board 10, pipe lines 15 and 16 are formed for raising the temperature to a desired temperature by passing high-temperature steam. Pipes ST2 and ST3 branched from the steam supply side pipe ST1 and steam discharge side pipes ET1 and ET2 are connected to the paths 15 and 16, respectively. Further, in the middle of the steam supply side pipes ST1, ST2, ST3, valves V1, V2, V3 and a pressure gauge P1 for detecting the steam pressure in the pipe ST1 are arranged, and the steam discharge side pipes ET1, ET2 Is connected to the drain pipe 14 via a valve V6.

In addition, the boiler apparatus which supplies water vapor | steam to piping ST1, and the press raising / lowering apparatus containing the hydraulic mechanism for raising / lowering and pressurizing the upper press board 10A with respect to the lower press board 10B of the fixed side of the press board 10 are abbreviate | omitted. Has been.
In the present embodiment, high-temperature steam is generated using the pipe 12 connected to the valve V4 in order to heat the interior space IS formed by the upper press board 10A and the lower press board 10B and the positioning hole 18 in the press board 10. In addition to this, it is also possible to use high-frequency heating, microwave heating, or the like. In particular, for the high-frequency heating of wood, a method of heating from the center of wood at a high frequency slightly lower than that of microwave is preferable to dielectric overheating by microwave.

Further, on the press board 10, a cooling water supply side that cools to a desired temperature by passing low-temperature cooling water in place of water vapor through the pipes 15 and 16 formed in the upper press board 10A and the lower press board 10B. Pipes ST12 and ST13 branched from the pipe ST11 are connected to the pipes ST2 and ST3, respectively. Further, valves V11, V12, V13 are arranged in the middle of the pipes ST11, ST12, ST13 on the cooling water supply side. In addition, the cooling water supply apparatus which supplies cooling water to piping ST11 is abbreviate | omitted.
Of course, when the present invention is carried out, the compressing force is applied in the direction perpendicular to the surface of the three oil palm base materials W of the pre-pressing bonding material NW in the direction compressed by the press 10. It is done.

Then, in manufacturing the consolidated material PW from the pre-pressing bonding material NW by the adhesive plate manufacturing apparatus MC configured as described above, first, as shown in FIG. The upper press board 10A rises with respect to the lower press board 10B on the fixed side of the inner space formed by the upper press board 10A and the lower press board 10B by the pre-pressing bonding material NW that has been dried in advance to a predetermined condition. It is placed in the IS and positioning hole 18.
Here, in the present embodiment, the pre-pressing bonding material NW that is a raw material of the compacting material PW is formed in a predetermined dimension (thickness, width, length), and a total of three oil palms. The substrates W1, W2, and W3 are placed in the positioning holes 18 of the lower press board 10B with the surface sides of the bases W1, W2, and W3 facing the upper press board 10A and the lower press board 10B.

Subsequently, as shown in FIG. 8B, the upper press platen 10A is lowered at a predetermined pressure with respect to the pre-pressing bonding material NW placed on the positioning hole 18 of the fixed-side lower press platen 10B. Thus, it is brought into contact with the upper surface of the pre-pressurizing bonding material NW, that is, in the present embodiment, in the vertical direction with respect to the surfaces of the oil palm base materials W1, W2, and W3. In step S13, timer control by the timer I is started. Looking at the timer I in step S13, it is determined whether it is the heating timing in step S14, and it is determined whether it is the compression timing in step S15.
At the heating timing, steam at a predetermined temperature (for example, 110 to 180 [° C.]) is passed through the piping path 15 of the upper press panel 10A and the piping path 16 of the lower press panel 10B in step S16, and the internal space IS and the positioning holes 18 is maintained at a predetermined temperature (for example, 110 to 180 [° C.]). When it is determined in step S14 that it is not the heating timing, it is determined in step S15 whether it is the compression timing, and when it is the compression timing, the compression process is started in step S17.

That is, in step S17, the compression force of the upper press board 10A is set to a predetermined pressure (for example, 20 to 50 kg / cm ² ) with respect to the lower press board 10B on the fixed side, and the pre-pressing bonding material NW is used as the upper press board. 10A and the lower press panel 10B are heated and compressed for a predetermined time (for example, 5 to 40 [min]). Also, in step S18, it is determined whether the heating / compression is completed, and the routine processing from step S13 to step S18 is repeated until the end time is reached.
In order to prevent cracking, the compressive force in step S17 is based on the temperature rise of the pre-pressing bonding material NW, that is, the temperature state inside the pre-pressing bonding material NW according to the elapsed time of the timer I in step S18, heating It is desirable to gradually increase with the passage of time, and it is preferable to set the heating and compression time in consideration of the heating time.

  Further, as shown in FIG. 9 (c), when the peripheral edge portion 10a of the upper press board 10A comes into contact with the peripheral edge part 10b of the lower press board 10B, the seal member 11 disposed on the peripheral edge part 10a of the upper press board 10A. The internal space IS and the positioning hole 18 formed by the upper press board 10A and the lower press board 10B are hermetically sealed. Here, steam is supplied into the internal space IS and the positioning hole 18 through the pipe port 12 a of the pipe 12. At this time, the water vapor simultaneously wets the oil palm base material W or the pre-pressurizing bonding material NW in a dry state to a predetermined humidity with a good balance. Then, with the internal space IS and the positioning hole 18 sealed, the compression force by the upper press board 10A and the lower press board 10B is maintained, and a predetermined temperature (for example, 150 to 210 [° C.]) based on the timer I in step S13. ).

  In the present embodiment, the internal space IS and the internal space IS when the internal space IS and the positioning hole 18 formed by the upper press board 10A and the lower press board 10B are sealed via the seal member 11 The vertical dimension interval of the positioning holes 18 is set to the finished dimension in the thickness direction when the pre-pressing bonding material NW becomes the consolidated material PW having a compression rate of 70% by the press board 10. For this reason, the compression ratio of the entire thickness of the pre-pressing bonding material NW, that is, the change in the plate thickness due to the compression of the pre-pressing bonding material NW, is that the peripheral edge portion 10b of the upper press board 10A is changed to the peripheral edge part 10b of the lower press board 10B. It will be decided by contacting.

Then, in the sealed state of the internal space IS and the positioning hole 18 shown in FIG. 9C, the compressive force of the upper press board 10A and the lower press board 10B is maintained, and the internal space IS and the positioning hole 18 have a predetermined temperature ( For example, 150 to 210 [° C.] is maintained for a predetermined time (for example, 30 to 120 [min]), and heating to form a consolidated material PW that does not return when the subsequent cooling and compression is released. Processing is performed. At this time, high-temperature and high-pressure vapor pressure is generated between the surrounding surface of the pre-pressurizing bonding material NW and the inside thereof through the internal space IS and the positioning hole 18 that are hermetically sealed by the upper press board 10A and the lower press board 10B. You can go in and out.
As described above, in the present embodiment, the upper press board 10A and the lower press board 10B are in surface contact with the front and back surfaces of the pre-pressurizing bonding material NW and are held in the sealed internal space IS and the positioning holes 18. For this reason, the entire pre-pressing bonding material NW is sufficiently heated and compressed and deformed efficiently.

Next, as shown in FIG. 9 (d), when the heat compression process is performed in a sealed state of the internal space IS and the positioning hole 18, the internal space IS and the positioning hole with the pressure gauge P2 as a vapor pressure control process. 18 vapor pressure is detected, and the valve V5 is appropriately opened and closed. As a result, high-temperature and high-pressure water vapor is discharged from the internal space IS and the positioning hole 18 to the drain pipe 14 side through the pipe port 13a and the pipe 13, and in particular, the moisture content of the outer layer portion of the pre-pressurizing bonding material NW. Therefore, the excess internal space IS and moisture in the positioning hole 18 are removed, and the internal space IS and the positioning hole 18 are adjusted to have a predetermined vapor pressure. Further, if necessary, a predetermined vapor pressure can be supplied to the internal space IS via the pipe 12 and the pipe port 12a (FIG. 9) connected to the valve V4. As a result, the fixing of the heat compression treatment of the wood, that is, the so-called immobilization of the wood is further promoted.
Further, immediately before the transition from the heating compression to the cooling compression by the upper press panel 10A and the lower press panel 10B, the valve V5 is opened as a vapor pressure control process, so that the internal space passes through the piping port 13a and the piping 13. High-temperature and high-pressure steam is discharged from the IS and positioning hole 18 to the drain pipe 14 side.

If it is determined in step S18 that the heating process in step S16 and the compression process in step S17 based on the operation of the timer I in step S13 are completed, the fixing process is started in step S19. In the immobilization process, normal temperature cooling water or ground water is passed through the piping path 15 of the upper press panel 10A and the piping path 16 of the lower press panel 10B, as shown in FIG. As a result, the upper press board 10A and the lower press board 10B are cooled to around room temperature and held for a predetermined time (for example, 10 to 120 [min] for oil palm) depending on the material. At this time, the compression force of the upper press disk 10A with respect to the fixed-side lower press disk 10B is maintained at a predetermined pressure (for example, 20 to 50 kg / cm ² ) that is the same as the pressure at the time of heat compression. The board 10A and the lower press board 10B are cooled.
Finally, as shown in FIG. 9 (f), the pressure releasing step is entered in step S 21, the upper press platen 10 A is raised with respect to the fixed-side lower press platen 10 B, and the internal space IS and the positioning hole 18 are A series of processing steps is completed by taking out the consolidated material PW, which is a finished product.

The pre-pressing bonding material NW for manufacturing the consolidated material PW of the present embodiment will be described in more detail.
The press machine 10 is mainly provided with the press machine 10 in which the internal space IS and the positioning hole 18 are formed by the divided structure of the upper press machine 10A and the lower press machine 10B. The movement restriction of the outer periphery of the bonding material NW can be the frame body 20. The frame 20 as the movement restriction of the outer periphery of the pre-pressurizing bonding material NW is determined depending on the size of the upper press panel 10A to be a vertically movable structure or a fixed structure.

A frame 20 shown in FIG. 10 is a modification of the adhesive plate manufacturing apparatus MC according to the embodiment and has a vertically movable structure. The frame 20 is disposed on the lower press panel 10B of FIGS. This is a substitute for the positioning hole 18.
In FIG. 10, an outer lower press disk 10Ba and an inner lower press disk 10Bb having the same height are disposed on the base plate 25 of the lower press disk 10B, and a frame groove 21 is formed therebetween. A plurality of coil springs 22 are disposed on the base plate 25 side of the frame body groove 21, and a square movable frame 23 is disposed above the coil springs 22. A cutout is formed on the inner surface of the movable frame 23 to form a fluid path 24 that guides fluid such as water vapor from the side surface of the pre-pressurizing bonding material NW. The inner periphery of the square movable frame 23 is substantially equal to the outer periphery of the pre-pressurizing bonding material NW. When the pre-pressurizing bonding material NW enters the square movable frame 23, the inner periphery of the rectangular movable frame 23 is positioned on the oil palm base materials W1, W2, and W3. There is no shift. Therefore, when the upper press board 10A is lowered, even if it has a width larger than the size of the lower press board 10B, when the upper press board 10A comes into contact with the movable frame 23, the movable frame 23 becomes elastic to the plurality of coil springs 22. It descends against it and responds to the compression of the bonding material NW before pressurization. Then, the compression of the pre-pressurizing bonding material NW is completed at the movement limit of the plurality of coil springs 22. Of course, when the upper press board 10A is inserted into the movable frame 23 of the lower press board 10B, the movable frame 23 can be fixedly arranged on the lower press board 10B. That is, the movable frame 23 of the lower press panel 10B can be fixed and compressed by the upper press panel 10A inserted into the movable frame 23.

  Thus, the thickness of the oil palm base materials W1, W2, and W3 is heated and compressed by the external force applied in the direction perpendicular to the length direction of the fibers of the oil palm base material W, and the whole is compressed and compressed. A compact PW having a rate of 60% or more is manufactured. At this time, the compressive force in the thickness direction of the oil palm base materials W1, W2, and W3 causes the elongation in the direction parallel to the plane of the oil palm base material W to be a movable frame. It is regulated by 23 and does not grow. Therefore, the compacted material PW is processed by a mold having a uniform compressive force.

  In this embodiment, after controlling the vapor pressure, the pressure is gradually released to release the internal vapor pressure, and the water vapor pressure in the bonding material NW before pressurization is lowered and fixed by cooling, so cooling compression is performed. When released, it is possible to form a consolidated material PW having no surface deformation called bulging deformation or puncture. That is, the compacted material PW manufactured in the present embodiment does not cause bulging deformation or surface cracking after being released from compression, and ensures stable quality. In the present embodiment, the compacted material PW is obtained by compressing and fixing it using the upper press panel 10A and the lower press panel 10B. However, when the present invention is implemented, a microwave used by a normal microwave oven is used. The compact PW can be obtained even if the pre-pressing bonding material NW is heated and compressed and fixed by dielectric heating at a frequency slightly lower than the wave frequency band.

In the oil palm base material W to be joined according to the present embodiment, the fiber directions of the vascular bundle or the like may be laminated with the same fiber direction, or the fiber directions may be laminated with each other perpendicular to each other.
In particular, when laminated with the same fiber direction, the fibers such as vascular bundles of the wood surface layer softened in the consolidation process are fibers such as vascular bundles with the same fiber direction adjacent to the lamination direction (longitudinal direction). For example, the vascular bundle enters between the vascular bundles of the counterpart oil palm base material W, and the oil palm base materials W fixed in the entangled state are firmly joined to each other. In addition, since the expansion rate and contraction rate of the joint surface can be made completely equal, no stress is applied to the joint surface even if the ambient environment conditions change. In particular, when the fiber directions such as the vascular bundle are laminated in the same direction, when compressive force is applied thereto, the oil palm base material W becomes the fiber direction of the original oil palm trunk WD, and the oil palm base material W is different. Even in this case, since the vascular bundle enters between the vascular bundles of the oil palm base material W as the counterpart material and is fixed there, it can be integrated in a natural joined state.
Therefore, the bonding strength is high and the mechanical strength is high, and a stable dimensional shape after consolidation is ensured.

Moreover, not only the oil palm base material W1 and the oil palm base material W2 are integrated by the resin component and the sugar component contained in the oil palm base material W1 and the oil palm base material W2, but also the oil palm base material W2 and the oil. The palm base material W3 is also integrated. Moreover, even if other wood exists, they are integrated by the resin component and sugar component which the oil palm base material W contains.
In particular, in the oil palm base material W to be laminated according to the present embodiment, even if the fiber directions of the vascular bundles and the like are laminated with the same direction, the bending can be prevented. Even if they are stacked perpendicularly, bending can be prevented.

On the other hand, when the oil palm base material W is laminated so that the fiber directions are orthogonal to each other, the mutual oil palm base materials W interact with each other even if expansion and contraction force is generated due to a change in ambient environmental conditions after the consolidation process. As a result, warpage deformation in a specific direction is prevented. That is, when the total number of the oil palm base materials W is an odd number, when the fiber directions are laminated so that the fiber directions are orthogonal to each other, the fiber directions of the single plate are parallel and the cross section is symmetric in the front and back, so the change in ambient environmental conditions Distortion and the like due to is prevented.
At this time, since the vascular bundles of the respective oil palm base materials W are in a cross state, it is desirable that the vascular bundles of each other be in a state of being involved. By compacting under this entrainment condition, cellulose, hemicellulose, and lignin are hydrogen-bonded, and especially the oil palm trunk contains a lot of saccharides, lignin, plastic components, etc., so these components decompose and soften. Then, it oozes out around the vascular bundle and is then recrystallized and recombined to function as a binder and to be integrated.

  Furthermore, it is preferable that the oil palm base material W is laminated by disposing materials having a small air-drying specific gravity after drying on the front and back sides. That is, in FIG. 1A, the oil palm base materials W1,..., W5 and the oil palm base materials Y1,. The surface in the center direction of the material Y1 is made to face, and similarly, the surface in the center direction of the oil palm base material Y2 is made to face the surface in the center direction of the oil palm base material W2, and When the surface in the center direction of the oil palm base material Y3 is opposed to the surface, the size and density of the oil palm base material W, the vascular bundle of the oil palm base material Y, the thickness and shape of the conduit, and the distribution of parenchymal cells The states correspond to each other, and the directions in which the bending occurs cancel each other. In other words, it is desirable that the center directions face each other and the distance from the center is the same or substantially the same. As a result, the air-drying specific gravity distribution after drying is made uniform and compaction processing is performed. Therefore, sufficient heating and compression are performed by the upper press board 10A and the lower press board 10B, and the specific gravity between the woods is increased. The difference is reduced, and the difference in dimensional change rate after commercialization is also reduced. Therefore, the stability of the dimensional shape after commercialization increases.

Further, in the compression process of step S17, the upper press platen 10A is pressed to a predetermined pressure (for example, 0.5 to 0.5) with respect to the plurality of stacked pre-pressing bonding materials NW placed on the fixed-side lower press platen 10B. 3 kg / cm ² ) and is brought into contact with the upper surface of the laminated pre-pressing bonding material NW, that is, a plane perpendicular to the length direction of the fibers. At the beginning of the compacting process, first, heating in the heating step (step 16) is started, the valves V1, V2 and V3 are opened, and the piping 15 and the lower press panel of the upper press panel 10A from the boiler device (not shown). Steam for heating is passed through the piping path 16B of 10B, the interior space IS and the positioning hole 18 are maintained at a predetermined heating temperature, and the stacked pre-pressurizing bonding material NW is heated.

  Here, it is preferable that the heating temperature in the heating process in the initial stage of compression is in the range of 110 ° C to 160 ° C. If the heating temperature is too low, sufficient compacting will not be achieved, resulting in insufficient strength, poor bonding between wood, and dimensional shape deformation due to hygroscopic drying after product production, while the heating temperature is too high. The surface may be carbonized to change to black and the color tone or scent peculiar to wood may be impaired, or the material may deteriorate and the strength may be lowered and become brittle. According to the experiments by the present inventors, it has been found that an appropriate temperature condition is in the range of 110 ° C to 160 ° C. By using this temperature condition, it is possible to prevent improper fixing in the compacting process, and material deterioration such as surface carbonization and lowering of material strength. More preferably, the heating temperature in the heating step in the initial stage of compression is in the range of 120 ° C to 140 ° C. The specific set temperature is set according to the moisture content of the oil palm base material W or the like.

Further, in the pressurizing step of Step S17, the compression pressure of the upper press panel 10A is set to a predetermined pressure with respect to the fixed-side lower press panel 10B, and the pre-pressurizing bonding material NW is the upper press panel 10A and the lower press panel 10B. And heated and compressed for a predetermined time. At this time, as shown in FIG. 9C, when the peripheral portion 10a of the upper press panel 10A comes into contact with the peripheral portion 10b of the lower press panel 10B, the seal member 11 disposed on the peripheral portion 10a of the upper press panel 10A. As a result, the internal space IS and the positioning hole 18 formed by the upper press board 10A and the lower press board 10B are sealed.
In this way, by heating and compressing by surface contact of the press panel, in particular, by applying pressure after heating to the heating temperature, even when warping deformation at the time of drying occurs in the bonding material NW before pressurization, Flattening can be achieved without causing cracks, cracks, etc., and heat compression can be performed efficiently. Furthermore, while the pre-pressurizing bonding material NW is heated and compressed, and the internal space IS and the positioning hole 18 are kept in a sealed state, the water vapor originally contained in the pre-pressurizing bonding material NW becomes the vapor pressure. Therefore, the oil palm base material W can be freely diffused and discharged through the internal space IS and the positioning hole 18, so that the heat compression is performed efficiently and uniformly over the entire thickness.

Here, the predetermined pressure for compressing the pre-pressurizing bonding material NW is preferably in the range of 1 to 100 kg / cm ² . If the pressure is too low, immobilization will be poor in the compacting process, while if the pressure is too high, cracks may occur on the surface. According to the experiments of the present inventors, an appropriate pressure conditions is within the 1 to 100 kg / cm ^2. By adopting this pressurizing condition, it is possible to prevent immobilization defects and occurrence of cracks in consolidation. More preferably, it is in the range of 10 to 50 kg / cm ² .
If the compression speed at this time is fast, water vapor and air in the pre-pressing bonding material NW are difficult to escape, and the pressure acting on the pre-pressing bonding material NW increases, so that cracks occur, There is a risk of internal cracking due to insufficient softening. On the other hand, when the compression speed is low, the load on the surface in contact with the upper press board 10A and the lower press board 10B is increased, and cracks or the like may occur. Therefore, it is desirable that the compression pressure at this time is gradually increased according to the temperature transmission state inside the pre-pressurizing bonding material NW.

  Furthermore, according to the experiments by the present inventors, it is preferable that the time for heating and compressing be in the range of 10 minutes to 40 minutes. This time condition can prevent subsequent immobilization due to the treatment time being too short and carbonization of the surface due to the treatment time being too long. More preferably, the predetermined time during compression is in the range of 20 minutes to 30 minutes. In addition, it is preferable to set also the time of this heat compression considering the transmission state (time) of the temperature inside the bonding material NW before pressurization.

  Note that the internal space IS and the positioning hole 18 formed by the upper press board 10A and the lower press board 10B of the press board 10 are hermetically sealed via the seal member 11, and the vertical direction of the internal space IS and the positioning hole 18 is as follows. The dimension interval is set to a finished dimension in the thickness direction when a plurality of laminated pre-pressing bonding materials NW are consolidated to form a consolidated material PW having an air-dry specific gravity of 0.8 or more. For this reason, the compression ratio of the entire thickness of the laminated pre-pressing bonding material NW, that is, the change in thickness due to the compression of the laminated plural pre-pressing bonding materials NW is caused by the peripheral portion 10a of the upper press panel 10A. This is determined by contacting the peripheral edge portion 10b of the lower press panel 10B.

The predetermined compression pressure (preferably within the range of 1 to 100 kg / cm ² ) by the upper press board 10A and the lower press board 10B is maintained in the sealed state of the internal space IS and the positioning hole 18 shown in FIG. 9C. The temperature is raised to a specific heating temperature by the piping 15 of the upper press panel 10A and the piping 16 of the lower pressing panel 10B, and the internal space IS and the positioning hole 18 are held at a predetermined heating temperature for a predetermined time. At this time, high-temperature and high-pressure vapor pressure is generated between the surrounding surface of the pre-pressurizing bonding material NW and the inside thereof through the internal space IS and the positioning hole 18 which are sealed by the upper press platen 11 and the lower press platen 21. You can go in and out.
Then, when the heat compression process is performed in a sealed state of the internal space IS and the positioning hole 18, the vapor pressure in the internal space IS and the positioning hole 18 is detected by the pressure gauge P2 as a vapor pressure control process. As shown in (d), the vapor pressure of the second heating temperature is supplied to the internal space IS through the pipe 12 and the pipe port 12a connected to the valve V4, or the valve V5 is appropriately opened and closed. Then, high-temperature and high-pressure water vapor is discharged from the internal space IS to the drain pipe 14 side through the pipe port 13a and the pipe 13, whereby the vapor pressure of the internal space IS and the positioning hole 18 is controlled to a predetermined value.

  In this way, by controlling the vapor pressure of the internal space IS and the positioning hole 18, the plurality of laminated oil palm base materials W are heated and compressed. That is, by making the peripheral surface of the oil palm base material W and the inside thereof laminated in a plurality of layers the same temperature, pressure, and vapor pressure state as the internal space IS and the positioning hole 18, the entire oil palm base material W is made uniform. There is no processing strain, and shrinkage and expansion due to a change in the restoring force after molding and the surrounding environmental conditions are remarkably suppressed. In particular, by controlling the vapor pressure by discharging or introducing water vapor while maintaining a predetermined pressure state, the surface is prevented from being carbonized, uniformly heated and compressed, and further, the surface is prevented from drying. Smooth fixation is achieved, and recovery, return, deformation, etc. after molding are suppressed.

  Here, it is preferable that the final heating temperature for maintaining the heating and compression state for compaction is in the range of 120 ° C to 210 ° C. If the heating temperature is too low, the immobilization becomes sweet and chemical changes due to the action of water vapor cannot be caused sufficiently, resulting in improper immobilization, which tends to occur due to moisture absorption or deformation due to drying, while the heating temperature is high. If it is too much, the surface may be carbonized to change to black, and the color tone or scent peculiar to wood may be impaired, or the material may deteriorate and the strength may be lowered and become brittle. According to our experiments, suitable temperature conditions are in the range of 120 ° C to 210 ° C. By setting this temperature condition, it is possible to prevent immobilization failure in the compacting process, maintain dimensional shape stability, and prevent material deterioration such as surface carbonization and material strength reduction. More preferably, the heating temperature is in the range of 120 ° C to 140 ° C.

  Further, according to the experimental study by the present inventors, the compression time immediately before immobilization is preferably in the range of 10 minutes to 120 minutes. By this time condition, it is possible to prevent immobilization failure due to the treatment time being too short and carbonization of the surface due to the treatment time being too long. More preferably, the predetermined time is in the range of 30 minutes to 90 minutes. The specific set time for performing the heating / compression process immediately before the immobilization is set in consideration of the moisture content of the pre-pressurizing bonding material NW and the like.

Incidentally, the start of the vapor pressure control in the internal space IS and the positioning hole 18 in the sealed state due to the introduction or discharge of water vapor is performed after the temperature of the upper press panel 10A and the lower press panel 10B reaches a specific heating temperature. It is desirable to be done. If it does in this way, water vapor can osmose | permeate in the joining material NW before pressurization, and, thereby, the chemical change of the oil palm base material W can fully be caused, As a result, oil palm base material W is enough, and It can be fixed uniformly and is less likely to return due to moisture absorption or deformation due to drying. That is, when the introduction of water vapor in the closed internal space IS and the positioning hole 18 is started before the temperatures of the upper press board 10A and the lower press board 10B reach a specific heating temperature, the water vapor is condensed. The interior space IS and the positioning hole 18 in the sealed state are filled with water, and the moisture content of the wood increases, and as a result, return due to moisture absorption, deformation due to drying, and the like are likely to occur. Further, even when the discharge of water vapor in the internal space IS and the positioning hole 18 in the sealed state is started before the temperatures of the upper press board 10A and the lower press board 10B reach the second heating temperature, the water content of the outer layer portion is also increased. The excess internal space IS based on the rate and the moisture in the positioning hole 18 are difficult to be removed, and the moisture content of the wood increases, so that return due to moisture absorption, deformation due to drying, and the like are likely to occur.
In addition, it is preferable to end the vapor pressure control before starting the cooling described later. If the vapor pressure control is not finished before starting the cooling described later, the cooling processing efficiency is lowered.

  Further, when steam is introduced into the internal space IS and the positioning hole 18 in a sealed state to control the vapor pressure, the temperature of the upper press panel 10A and the lower press panel 10B reaches a specific heating temperature. It is preferable to introduce a water vapor pressure and temperature equal to or lower than the water vapor pressure and temperature in the internal space IS and the positioning hole 18. When the pressure and temperature of the introduced water vapor are higher than the water pressure and temperature in the internal space IS and the positioning hole 18, the water is condensed and the internal space IS and the positioning hole 18 in a sealed state are filled with water. As a result, the moisture content of the oil palm base material W increases, and as a result, return due to moisture absorption, deformation due to drying, and the like easily occur. In addition, in the internal space IS and the positioning hole 18 in a sealed state, if there is excess moisture based on the moisture content of the outer layer portion of the pre-pressurizing bonding material NW, the high temperature in the internal space IS and the positioning hole 18 By appropriately discharging high-pressure water vapor, the pressure is adjusted to a predetermined vapor pressure.

Subsequently, the immobilization process in step S19 is performed while maintaining the same predetermined pressure (preferably within the range of 1 to 100 kg / cm ² ) as the pressure in the heating process in step S16 and the compression process in step S17. V11, the valve V12, and the valve V13 (FIG. 8) are opened, and normal temperature cooling water is passed from the boiler unit (not shown) through the piping 15 of the upper press panel 10A and the piping 16 of the lower press panel 10B. As shown in (e), the upper press board 10A and the lower press board 10B are cooled to around room temperature and held for a predetermined time (for example, 10 to 120 [min]).
Finally, the pressure is released in the fixing step of step S19, and as shown in FIG. 9 (f), the upper press disk 10A is gradually raised and separated from the fixed-side lower press disk 10B. A series of processing steps are completed by releasing the pressure and the sealed state and taking out the consolidated material PW as a finished product from the internal space IS and the positioning hole 18.

  In this way, the fixation in the consolidated state is stabilized by cooling under a pressure state in which no deformation occurs. Then, after cooling in the pressurized state, by releasing the pressure, that is, by lowering the water vapor pressure in the pre-pressurized bonding material NW by cooling, gradually releasing the pressure to release the internal vapor pressure Excess water vapor can be liquefied and removed, and when the compression is released, the compact PW is free from swelling, deformation, breakage (puncture) and the like. That is, according to the laminated plywood PW of the present embodiment, stable quality is ensured without causing bulging deformation, cracking, destruction, etc. after compression release.

  By the external force applied in the direction perpendicular to the length direction of the fibers of the laminated pre-pressing bonding material NW, the thickness of the laminated pre-pressing bonding material NW as a whole is heated and compressed, and the air-drying specific gravity is reduced to 0 by consolidation. .8 or more In the present embodiment, normally, the compact PW having a specific gravity of 1.2 or more is manufactured. And the compacting material PW obtained in this way has oil palm base material W joined firmly by the compaction process. This is because cellulose, hemicellulose, and lignin are hydrogen-bonded by compaction processing, and especially the palm of an oil palm contains many sugars, lignin, plastic components, etc., and these components are decomposed and softened by compaction processing. The oil palm base material W functions as a binder by being recrystallized and recombined after moving between the oil palm base materials W, and further, the fibers of the surface layer of the oil palm base material W are softened by the consolidation process. It is considered that the timbers are firmly joined together by being intertwined with the fibers of the wood adjacent in the stacking direction.

As described above, according to the consolidated material PW which is the oil palm consolidated material of the present embodiment, the woods are joined together without using an artificial adhesive or environmental adhesive due to formaldehyde or a natural adhesive having a high cost. Therefore, it is environmentally friendly and can reduce costs.
In addition, when joining the oil palm base material W by using an adhesive, it is common to apply the adhesive and then press the adhesive to cure the adhesive. While the pressing process is necessary, according to the compacting material PW of the present embodiment, the woods are joined without using an adhesive by compacting, so that the separate joining process is not necessary. The manufacturing process can be simplified.

  The compacted material PW thus obtained is compacted to reduce the gaps in the oil palm base material W, and the lignin, hemicellulose, etc. constituting the cell wall are softened / decomposed and recombined. The disadvantage of the oil palm base material W, which is recrystallized to increase the cell density, has a low specific gravity, is low in strength, and easily deforms, is complemented, and high strength and stable dimensional shape are ensured. In particular, by compacting so that the air-dry specific gravity is 0.8 or more, the entire thickness of the laminated oil palm base material W is uniformly compressed, the properties of the oil palm base material W are changed, and the hardness etc. Remarkably high, less variation in physical properties and characteristic values such as hardness, and less variation in expansion rate and drying rate due to changes in ambient environmental conditions, thereby suppressing deformation, etc. Increases nature. Therefore, the physical properties are stable, the quality between products is small, and the commercial value is high. Furthermore, the whole is compacted in a state where a plurality of dried oil palm base materials W are laminated, and since the expansion rate and contraction rate due to changes in the ambient environment conditions are substantially uniform on the joint surface, stable jointability is obtained. It is maintained, and a stable dimensional shape is ensured without causing distortion, deformation, cracks, and the like due to stress applied to the joint surface due to changes in ambient environmental conditions.

In particular, when the oil palm base material W is laminated with the same fiber direction, the fibers of the oil palm base material W in which the fibers of the surface layer softened in the consolidation process are adjacent in the vertical direction with the same fiber direction. The oil palm base material W fixed in the entangled state is firmly joined. In addition, since the expansion rate and contraction rate at the joint surface can be made completely equal, no stress is applied to the joint surface when the ambient environmental conditions change. Therefore, the bonding strength is high, the mechanical strength is also high, and high dimensional shape stability is ensured.
On the other hand, when the pre-pressing bonding material NW is laminated so that the fiber directions are orthogonal to each other, even if expansion and contraction force occurs due to a change in the surrounding environmental conditions after consolidation, the mutual woods interact and specify each other. Directional warpage deformation is prevented. In particular, when the total number of sheets is an odd number, when laminated with the fiber directions orthogonal to each other, the fiber direction of the single plate is parallel and the cross section is symmetric on the front and back, preventing distortion due to changes in ambient environmental conditions, etc. Is done. At this time, a tough joining state can be obtained by increasing the compressive force with the same fiber direction in consolidation.
If the total number of sheets is an even number, the same fiber direction is laminated in a part of the inside, and the others are laminated with the fiber directions orthogonal to each other, so that the front and back fiber directions are aligned and the ambient environmental conditions It is possible to prevent distortion and the like due to the change of.

And even if the compacting material PW of this Embodiment is densified by the compacting process also in the front and back surface used as the compression surface, and oil palm base material W does not use an expensive natural adhesive agent, it is from an outer surface. It is difficult to peel off and the surface quality is good. That is, since peeling from the surface of the fiber can be suppressed without using an artificial adhesive or a natural adhesive having a high cost, it is environmentally friendly and the cost can be reduced.
Furthermore, since the entire thickness is compacted, even if a large chamfering process or curved surface process is applied to the ridgeline on the thickness side surface, high hardness is ensured on the end surface.

Incidentally, even in the case of using an oil palm base W in the vicinity of a soft tree center having a high water content in oil palm, the strength can be increased by compaction processing, or temperature and compression control can be performed in compaction processing. By doing so, excess water can be discharged, and the water vapor pressure inside the pre-pressurizing bonding material NW is uniformly and suitably adjusted, so that bulge deformation after compression processing and the like are also suppressed. Therefore, it is possible to form a consolidated material PW having a sufficient strength and a stable dimensional shape. Therefore, effective utilization of the whole trunk of oil palm can be aimed at.
In particular, in the dried oil palm base material W, when the air-drying specific gravity after drying is arranged and stacked on the front and back, as described above, the front and back contacting the upper press panel 10A and the lower press panel 10B. Since a material having a small air-dry specific gravity after drying is disposed in the layer, and compaction processing is performed, the material having a small air-dry specific gravity after drying is sufficiently heated and compressed by the upper press panel 10A and the lower press panel 10B. As a result, the difference in specific gravity between the woods is reduced, and the difference in dimensional change rate after commercialization is also reduced. Therefore, the stability of the dimensional shape after commercialization increases.

As described above, the compact PW as the oil palm compact according to the present embodiment peels the trunk of a soft oil palm having a high water content as the oil palm base W, and then dries and laminates a plurality of sheets. By compacting, the strength and hardness not only on the surface but also on the entire plate thickness are greatly improved, and a wide range of applications such as flooring, waistboard, indoor furniture, and exterior coating for housing used for surface coating are expected. . In particular, since the surface hardness is increased by compaction processing and sufficient strength and hardness can be ensured even if the thickness is small, the thickness can be reduced in commercialization.
Furthermore, when the fiber directions are laminated so as to be orthogonal to each other, even if expansion and contraction force occurs due to a change in ambient environmental conditions after consolidation, the oil palm base materials W interact with each other and warp deformation in a specific direction. Is prevented. At this time, since the vascular bundles of the oil palm base material W are in a cross state, the vascular bundles of the oil palm base material W are in a state of being involved, and by performing consolidation processing under the entanglement state of the vascular bundle of the oil palm base material W, cellulose, Hemicellulose and lignin are hydrogen-bonded. Especially, the trunk of oil palm contains a lot of saccharides, lignin, plastic components, etc., so these components decompose and soften and ooze out around the vascular bundle and recrystallize. -The binder function is enhanced by forming a recombined space.

[Embodiment 2]
The compacted material PW shown in FIG. 4 is formed by laminating only the oil palm base material W from the pre-pressing bonding material NW while crossing the fiber directions such as vascular bundles, and compressing the upper and lower molds of the flat plate mold. As shown in FIG. 7, the fiber direction of the vascular bundle of the oil palm base material W is crossed, as shown in FIG. The wood base material which consists of the cocoon base material K1 used as a plate material other than the oil palm base material W is laminated on one side (or both sides) of the laminated design surface side, and this is used as the pre-pressure bonding material NW. The consolidated material PW can be obtained. Of course, the wood base material made of the heel base material K1 may be a natural wood decorative plywood with a veneer having a thickness of about 0.25 to 0.5 mm as a wood base material.
Specifically, one or both surfaces on the design surface side can be made from any one of a Lauan base material, a Chinese base material, and a conifer base material formed into a plate shape by lumbering. Alternatively, one of the base materials on one or both sides on the design side is made of wood other than the oil palm base material W, for example, camellia, cedar, rice bran, bamboo leaf, rice cedar, pine pine, red pine, chestnut, bamboo shoot, bamboo shoot, cocoon It is also possible to use a plate material that makes use of the grain of cherry, cherry blossoms, cocoons, etc. In this embodiment, it is assumed that the heel base material K1 is used. Next, the oil palm base material W2 and the oil palm base material W3 are stacked in this order.

  In this way, the fiber bundles such as vascular bundles are laminated in parallel, the cocoon base material K1, the oil palm base materials W2 and W3 are disposed, and the oil palm base material W2 and the heel base material K1 are joined. It is. The resin component and sugar component contained in the oil palm base material W2 are ensured without using other adhesives, and the cocoon base material K1 and the oil palm base material W2 contain the resin component and sugar component contained in the cocoon. They are integrated by entering and fixing the fibers of the base material K1. In addition, the oil palm base material W2 and the oil palm base material W3 are in a state in which the vascular bundle on the opposite surface enters between the vascular bundles in a high-temperature pressurized state, and by performing consolidation processing in this entrained state, cellulose, Hemicellulose and lignin are hydrogen-bonded, and especially the trunk of oil palm contains many sugars, lignin, plastic components, etc., so these components decompose and soften and ooze out around the vascular bundle, and then re-apply. By being crystallized and recombined, it functions as a binder and is integrated.

In particular, even when the fiber directions are laminated parallel to each other, the heel base material K1 suppresses these distortions. Therefore, even if an expansion and contraction force is generated due to a change in ambient environmental conditions after consolidation, the mutual oil palm base material Even if W2 and W3 interact with each other to cause warpage deformation in a specific direction, the deformation is prevented. That is, even when the number of all the oil palm base materials W is an odd number, distortion caused by changes in ambient environmental conditions can be prevented in the same manner as when the fiber directions are stacked with the fiber directions orthogonal to each other.
Also in this embodiment, preferably, it is a surface cut parallel to the fibers of the oil palm base material W to be laminated, and is the side surfaces of the tree cores, or is a surface cut parallel to the fibers and is the bark side surface. It is preferable that the layers are laminated to face each other. That is, when the oil palm base material W is divided at a linear position passing through the tree core of the oil palm trunk WD and arranged so as to face each other, the tree heart side surfaces or the bark side surfaces face each other. By joining by processing, warp deformation in a specific direction due to the difference in cell density between the tree heart side and the bark side can be prevented.

Furthermore, the cocoon base material K1 is secured without the use of other adhesives for the resin component and sugar component contained in the oil palm base material W2, and the fiber directions of the oil palm base materials W are in a parallel state. However, the fibers on the surfaces facing each other in the fiber direction enter at a high temperature and under pressure, and by compacting under this state, cellulose, hemicellulose, and lignin hydrogen bond, especially on the trunk of oil palm. Because it contains a lot of saccharides, lignin, plastic components, etc., these components decompose and soften and ooze out around the vascular bundle, and then function as a binder by being recrystallized and recombined. Integration will be performed.
Therefore, joining with the base material K1 and the oil palm base materials W2 and W3 is easy, and even when the oil palm base materials W2 and W3 are going to bend, the base material K1 does not expand or contract corresponding to the bend. The fold base K1 can be provided as a means for preventing bending.

Next, basic experiments relating to the present invention will be described.
In this embodiment, three oil palm substrates W are used, but five oil palm substrates W1,..., W5 are used in this experiment. When the thickness is 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, the fiber length is The compacted material PW was manufactured by compressing from the pre-pressurizing bonding material NW in which the five oil palm base materials W having the same thickness were arranged so as to intersect at right angles.
Basically, a compacting process with a compression rate of 20 to 80% was performed on the thickness of the pre-pressing bonding material NW before compression. The temperature of the supplied steam is raised to 110 to 210 ° C., and the compressive force applied during that time is 20 to 50 kg / cm ² . Here, by laminating five 1.5 mm oil palm base materials W, it becomes a pre-pressurized bonding material NW of 7.5 mm, but compression error when compressed at a predetermined compression rate at the laboratory level In addition, an error is present although it is several% or less due to expansion after decompression.

Also, just in case, the five oil palm base materials W of this experiment have thicknesses of 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, Compress one of 5.0 mm, 5.5 mm, and 6.0 mm from the pre-pressing bonding material NW in which five oil palm substrates W of the same thickness are arranged so that the fiber lengths are parallel to each other. A consolidated material PW was produced.
Similar to the former, a consolidation material PW was obtained that was subjected to consolidation processing with a compression rate of about 20 to 80% with respect to the thickness of the pre-compression bonding material NW before compression. The temperature of the water vapor to be supplied is increased from 110 ° C. to 210 ° C., and the compression force applied during that time is 20 to 50 kg / cm ² .

  In Table 1, the pre-pressing bonding material NW in which five oil palm base materials W having the same thickness are arranged so that the fiber (vascular bundle) length intersects at right angles is shown as “cross-bonded state”, and the fiber length The pre-pressing bonding material NW in parallel with each other is shown as a “parallel bonding state”. Table 1 shows the results of the endurance test. It is placed in a place where sunlight is used for three months from April to June, and the water is set to 30 at 10 and 4 o'clock on sunny days under natural weather conditions. Sprayed for a minute. In the “cross-bonded state” 1.5 mm and 2.0 mm consolidated material PW, the surface was not partially flush, and there was a possibility that bubbles were generated or peeled inside. That is, it has been found that the usage environment conditions are restricted. In this test, the response to a sudden change in natural temperature was examined. Here, it is proved that the “parallel joined state” is easier to bond with each other than the “cross joined state”, and a good strength can be obtained. Even when laminated with the fiber directions parallel to each other, even if expansion and contraction force occurs due to a change in ambient environmental conditions after consolidation, the oil palm base materials W interact with each other and the straw base material Since K1 functions to prevent warping deformation in a specific direction, the deformation is prevented and the mechanical strength can be increased. That is, even when the number of all the oil palm base materials W is an odd number, distortion caused by changes in ambient environmental conditions can be prevented in the same manner as when the fiber directions are stacked with the fiber directions orthogonal to each other.

However, in other samples, since hemicellulose has a function of binding lignin and cellulose, it is unclear how much they interfere with each other in the naturally cultivated state of oil palm trunk WD. By raising the temperature to a predetermined temperature (120 ° C. or higher), for example, 80 ° C. or higher of the reaction start temperature of lignin, it becomes 60 ° C. or higher of the reaction start temperature of hemicellulose. It turned out to be a material.
In the “cross-bonded state” 1.5 mm and 2.0 mm laminated plywood PW, when 0.4 to 1.2 mm vascular bundles intersect, hemicellulose is lignin and cellulose at the intersection of the highly unique vascular bundles. It is estimated that the total amount of hemicellulose, lignin, and cellulose obtained at a predetermined temperature and compressive force is small, and the joining is not completely performed.

Moreover, the inventors performed the test showing the joint strength of Table 2 and Table 3 as severe use conditions. Although many samples were used, the samples submitted this time are extracted from the areas where remarkable features appear.
The compacted material A is composed of four 3.0 mm oil palm base materials W1,..., W4, and the thickness of the oil palm base material W is 3.0 mm. The compact B is composed of four oil palm substrates W, and the thickness of the oil palm substrate W is 2.5 mm + 3.0 mm + 3.0 mm + 2.5 mm. The compacted material C is composed of three oil palm base materials W, and the thickness of the oil palm base material W is 2.5 mm + 3.0 mm + 2.5 mm. The compacted material D is composed of three 3.0 mm oil palm base materials W, and the thickness of the oil palm base material W is 3.0 mm + 3.0 mm + 3.0 mm.
The overall compressibility of the pre-pressing bonding material NW and the compacting material PW was calculated by the formula {(thickness of the pre-pressing bonding material NW) − (thickness of the compacting material PW)} / the thickness of the pre-pressing bonding material NW. .

Here, in the severe bonding force test of applying 30 ° C. hot water and 60 ° C. hot water, the consolidation material A and the consolidation material B did not change within 90 minutes even when applied to 30 ° C. hot water. However, when immersed in hot water at 60 ° C., the laminated surfaces of the consolidated material A and the consolidated material B softened in 45 minutes.
Further, with the compacted material C, the laminated surface softened in 30 minutes even when immersed in hot water at 30 ° C. That is, this is not a problem of 60 ° C. or higher of the reaction start temperature of hemicellulose, but it can be estimated that the influence of compressive force is exerted. If the compressive force is increased, the air inside the compacted material C disappears and dense bonding is performed, but if the compressive force is weak, only formal bonding is performed without crushing the fibers. It is estimated that the whole was softened. Of course, the laminated surface softened in 15 minutes even when the compacted material C was immersed in hot water at 60 ° C.
And the consolidation material D is joined to the hot water of 30 ° C. for 45 minutes or less by increasing the thickness of the oil palm base material W and increasing the compressive force. Endure less than a minute. Therefore, it is a necessary requirement to increase the compression force. From the viewpoint of the compression rate, a compression rate of 60% or more, more preferably 65% or more is desirable. In particular, when the compression rate is 70% or more, the safety is increased. When the compression rate is low, it is desirable to apply a water-repellent coating agent to the surface.

That is, experimentally, when the compressibility is 65% or more, the pre-pressurizing bonding material NW is formed by arranging the oil palm base materials W so that the fiber (vascular bundle) lengths intersect each other at right angles. The thickness of the oil palm substrate W is preferably 2.5 mm or more because there is a boundary line at 2.5 mm. In particular, there is no condition in which the compact PW is immersed in hot water at 30 ° C. in nature, but it can still be used if the thickness of the oil palm base material W is 2.5 mm and the compressibility is 65% or more. Is shown.
In addition, the condition that the compact PW is immersed in hot water at 60 ° C. is to confirm the possibility that hemicellulose inhibits the binding between lignin and cellulose. If the compression ratio is 65% or more, It also indicates that it is difficult to appear.
However, since it means that the boundary line of the compressibility is about 65%, in mass production, it is desirably 65% or more, and the thickness of the oil palm base material W is also 3.0 mm. As described above, a thickness of 1 mm or more is desirable for the thickness after consolidation.

  Further, the inventors conducted the same experiment as in FIGS. 2 and 3 using three oil palm base materials W each having a thickness of 4 mm. It was confirmed that the compression ratio was 48.75%, which was 50%, and it was not immersed in hot water at 60 ° C. That is, it was confirmed that the compression rate should be 50% or more, and if the compression rate was 40% or more, there was no practical problem.

As described above, the oil palm compacted material according to the present embodiment is arranged so as to overlap with the oil palm base material W having a predetermined shape made from the oil palm trunk WD and the oil palm base material W, and the oil palm trunk. Oil palm base material W having a predetermined shape made from WD, and oil palm base material W is compacted by using a resin component and a sugar component contained in oil palm base material W, and oil palm The base materials W are joined together.
An oil palm base material W made from an oil palm trunk WD having a predetermined length and another oil palm base material W are compressed and fixed and joined together. At this time, an oil palm compacted material joined with a natural product using the resin component and sugar component contained in the oil palm base material W is obtained. Since the amount of the resin component and the sugar component contained in the oil palm base material W at the time of joining from between the oil palm base materials W is ensured without using another adhesive, Since joining is easy and the oil palm base material W can be made into an arbitrary thickness, an oil palm compacted material having a required thickness can be formed according to the intended use.
Therefore, the oil palm trunk WD is used, and the use of formaldehyde adhesives that cause sick house syndrome is suppressed. It is done.

The oil palm compacted material of the above-described embodiment includes an oil palm base material W having a predetermined shape made from the oil palm trunk WD, and a predetermined shape made from the oil palm trunk WD by being disposed alongside the oil palm base material W. The oil palm base material W is compacted using the resin component and sugar component contained in the oil palm base material W, and the oil palm base material W is integrated with each other. It is joined.
An oil palm base material W made from an oil palm trunk WD having a predetermined length and another oil palm base material W are compressed and fixed and joined together. At this time, an oil palm compacted material joined with a natural product using the resin component and sugar component contained in the oil palm base material W is obtained. Since the amount of the resin component and the sugar component contained in the oil palm base material W at the time of joining from between the oil palm base materials W is ensured without using another adhesive, Since joining is easy and the oil palm base material W can be made into arbitrary thickness, the oil palm compacted material made into the required area according to the usage can be formed.
Therefore, the oil palm trunk WD is used, and the use of formaldehyde adhesives that cause sick house syndrome is suppressed. It is done.

The oil palm compacted material according to the above-described embodiment is provided with an oil palm base material W having a predetermined shape made from an oil palm trunk WD and an oil palm base material W, and the oil palm base material W is made from the oil palm trunk WD. A resin comprising an oil palm base material W having another shape and a wood base material made from wood other than the oil palm, and the oil palm base material W contains the oil base material W and the wood base material. The oil palm base material W is integrally joined by consolidation using a component and a sugar component.
Therefore, an oil palm base material W made from an oil palm trunk WD having a predetermined length, another oil palm base material W and a wood base material such as a straw base material K1, etc. are compressed, fixed, and joined together. It is. At this time, an oil palm compacted material joined with a natural product using the resin component and sugar component contained in the oil palm base material W is obtained.

Since the amount of the resin component and the sugar component contained in the oil palm base material W at the time of joining from between the oil palm base materials W also joins the wood base material such as the straw base material K1, other adhesives The oil palm base material W and the wood base material such as the straw base material K1 can be easily joined, and the oil palm base material W can be made to an arbitrary thickness. Thus, an oil palm compacted material having a required area can be formed. Further, the amount of the resin component and the sugar component contained in the oil palm base material W during joining from between the oil palm base materials W is insufficient to join the wood base material such as the straw base material K1. However, the amount of other adhesives to be used is reduced, the oil palm base material W and the wood base material such as the straw base material K1 are easily joined, and the oil palm base material W has an arbitrary thickness. Therefore, an oil palm compacted material having a required area can be formed according to the purpose of use.
In addition, for joining the wood base material such as the straw base material K1 and the oil palm base material W, to the resin component and sugar component of the oil palm base material W to be joined, other oil palm tree trunks, foliage, fruits You may add and use the resin component and sugar component which are obtained by pulverizing a tuft.
Therefore, the oil palm trunk WD is used, and the use of formaldehyde adhesives that cause sick house syndrome is suppressed. It is done.

The consolidation of the oil palm compact in the above embodiment is controlled so that the oil palm base materials W do not extend in the plane direction of the plate, and the pressure in the direction perpendicular to the surface of the oil palm base material W is controlled. In addition, pressure in the vertical direction is efficiently applied to the surface of the oil palm base material W, and the entire oil palm compact can be formed by one compaction.
Further, the consolidation of the oil palm compacted material in the above-described embodiment is to control the pressure under a predetermined temperature condition, maintain the pressure for a predetermined time, decompress the pressure, and fix it. Therefore, the pressure is controlled under a predetermined temperature condition, the pressure is controlled for a predetermined time, the pressure is released and the pressure is fixed, and a stabilized oil palm compact with reduced hysteresis is obtained.

  When this oil palm trunk WD is a node, when producing the oil palm base material W, a homogeneous oil palm base material W is obtained, and as a result, the compact PW made of the oil palm base material W becomes homogeneous. . Moreover, since the joining force is changed by the resin component and sugar component contained in the oil palm trunk WD itself depending on the applied temperature and pressure, an arbitrary adhesive force can be obtained by controlling the applied temperature and pressure. In the case of forming a consolidated material PW by joining a plurality of oil palm base materials W with a resin component and a sugar component contained in the oil palm trunk WD itself, other synthetic resins and synthetic rubbers are used as adhesives. Not because you can return to nature.

Furthermore, due to the compressive force when the oil palm trunk WD itself contains resin components such as lignin and saccharides such as cellulose and hemicellulose, the oil palm substrate W is almost free of voids and becomes a dense structure. Therefore, it has water resistance, is waterproof and insect-proof, and has a long service life even when used as a building material.
In particular, hemicellulose has a function of binding lignin and cellulose, and it is unclear how much they interfere with each other when the oil palm trunk WD is naturally cultivated. However, it was confirmed that by raising the temperature to a predetermined temperature, for example, 80 ° C. or more of the reaction start temperature of lignin, the reaction start temperature of hemicellulose was 60 ° C. or more, and they reacted with each other to become firm characteristics.

As described above, the oil palm compacted material of the present embodiment is formed of the oil palm base material W from the oil palm trunk WD having a predetermined length, and the thickness of one sheet after being compacted is 1 mm or more. One or more of the oil palm base material W and one or more of the Lauan base material, the China base material, or the conifer base material of a predetermined shape are arranged facing the oil palm base material W, and they are compressed. It is fixed and joined together.
Therefore, the amount of the resin component and the sugar component contained in the oil palm base material W at the time of joining from between the oil palm base materials W is ensured without using another adhesive. Also, one or more oil palm base materials W and one or more of Lauan base material, China base material, and conifer base material are arranged facing the oil palm base material W, and they are compressed and fixed. Since these are integrally joined, a compacted material PW joined with a natural product using a resin component and a sugar component contained in the oil palm base material W is obtained. In addition, since one or more of the Lawan base material, the Chinese base material, and the conifer base material can be used as a core material or as a design surface, a consolidated material PW can be manufactured according to the application.
Therefore, the mechanical strength of the compact PW itself is increased, and the use of formaldehyde-based adhesives that cause sick house syndrome is suppressed. It becomes a consolidated material.

  Since this oil palm trunk WD has no nodes or annual rings, when the oil palm base material W is produced, a uniform oil palm base material W is obtained. As a result, the compact PW made of the oil palm base material W is homogeneous. It will be something. Moreover, since the joining force is changed by the resin component and sugar component contained in the oil palm trunk WD itself depending on the applied temperature and pressure, an arbitrary adhesive force can be obtained by controlling the applied temperature and pressure. In the case of forming a consolidated material PW by joining a plurality of oil palm base materials W with a resin component and a sugar component contained in the oil palm trunk WD itself, other synthetic resins and synthetic rubbers are used as adhesives. Not because you can return to nature.

Furthermore, due to the compressive force when the oil palm trunk WD itself contains resin components such as lignin and saccharides such as cellulose and hemicellulose, the oil palm substrate W is almost free of voids and becomes a dense structure. Therefore, it has water resistance, is waterproof and insect-proof, and has a long service life even when used as a building material.
In particular, hemicellulose has a function of binding lignin and cellulose, and it is unclear how much they interfere with each other when the oil palm trunk WD is naturally cultivated. However, it was confirmed that by raising the temperature to a predetermined temperature, for example, 80 ° C. or more of the reaction start temperature of lignin, the reaction start temperature of hemicellulose was 60 ° C. or more, and they reacted with each other to become firm characteristics.

The laminated plywood according to the above embodiment includes one or more oil palm base materials each having a thickness of 1 mm or more after cutting the pre-pressing bonding material NW from the oil palm trunk WD having a predetermined length and compacting it. W and one or more of a Lauan base material, a Chinese base material, or a coniferous base material in which a lauan or a Chinese or coniferous trunk of a predetermined length is formed in a plate shape in the length direction of the trunk is an oil palm base. They are placed facing the material W and joined together.
Therefore, the mechanical strength of the compact PW itself is increased, and the use of formaldehyde-based adhesives that cause sick house syndrome is suppressed. It becomes a consolidated material.

Further, at least one oil palm base material W that has been subjected to consolidation processing and one or more of a lauan base material, a Chinese base material, and a conifer base material are disposed facing the oil palm base material W, If the resin palm and the sugar component contained in the oil palm base material W are insufficient in the case where the oil palm base material W is contained integrally, it adheres to one or more joining targets of any one of the Lauan base material, China base material, and conifer base material. A desired compact PW is manufactured by adding and bonding the agent.
Therefore, since the adhesive is used when the resin component and the sugar component contained in the oil palm base W are insufficient, the use of the formaldehyde-based adhesive that causes sick house syndrome is suppressed, and the oil palm is essential. An oil palm compact using the components contained in
At this time, in the adhesive to be added to join the oil palm base material W and the other wood base material, to the resin component and sugar component of the oil palm base material W to be joined, other oil palm tree trunks, foliage, It can also be used by adding a resin component and a sugar component obtained by pulverizing the fruit bunches.

The oil palm compaction material of the above embodiment is one or more oil palms each having a thickness of 1 mm or more after the oil palm base material W is cut out from the oil palm trunk WD having a predetermined length and subjected to consolidation. One or more of a base material W and a Lauan base, a Chinese base material, or a coniferous base material cut into a predetermined thickness from a predetermined length of Lauan stem, China stem or conifer trunk, and an oil palm base material They are placed facing W and joined together.
However, at least one of Lawan, Sina, or conifer is one or more of Lawan, Sina, or conifer, which has a predetermined length of Lauan or Sina or coniferous trunk formed in a plate shape in the length direction of the trunk. These plates can be arranged facing the oil palm base material W, and they can be joined together.
At this time, the joint may be compressed as a position process of the consolidation process, or may be compression for joining separately from the consolidation process.

  That is, the oil palm compacted material of the above embodiment is formed as a predetermined shape of an oil palm base material W from a predetermined length of oil palm trunk WD, and the thickness of one sheet after being compacted is 1 mm or more. One or more oil palm base materials W and any one of lauan, china, coniferous wood, etc., in which a predetermined length of lawan or other wood such as china or conifer is formed into a plate shape in the length direction of the trunk One or more of these may be arranged facing the oil palm base material W, and they may be integrally joined.

Accordingly, at least one compacted oil palm base material W and one or more plate materials of lauan, china, and conifer are arranged facing the oil palm base material W, and they are joined together. Therefore, when the resin component and sugar component contained in the oil palm base material W are insufficient, an adhesive is added to one or more joining objects of Lauan, China, and conifers and pasted together. Thus, a desired consolidated material PW is obtained.
Therefore, the mechanical strength of the compact PW itself is increased, and the use of formaldehyde-based adhesives that cause sick house syndrome is suppressed. It becomes a consolidated material.

One or more oil palm base materials W arranged facing the oil palm base material W of the above-described embodiment and joined together, and one or more of either a Lauan base material, a Chinese base material, or a conifer base material The oil palm base material W that is integrally joined with the resin is obtained by using the resin component and sugar component contained in the oil palm base material W for the joining, compressing and fixing them, and joining them integrally.
Accordingly, one or more oil palm base materials W and one or more of Lauan base material, China base material, or softwood base material are used as a compacting material PW, and the resin component and sugar component contained in the oil palm base material W Therefore, the use of a formaldehyde-based adhesive that causes sick house syndrome can be suppressed, and a laminated plywood PW using the components inherently possessed by the oil palm trunk WD can be obtained.

  For the joining of one or more oil palm base materials W that are arranged facing the oil palm base material W of the above embodiment and are integrally joined, a resin component and a sugar component contained in the oil palm base material W are used. In addition to the resin component and the sugar component contained in the oil palm base material W, the oil palm base to be joined is bonded to the joint surface integrally joined with one or more of the Lauan base material, the Chinese base material, or the softwood base material. A resin component and a sugar component obtained by pulverizing the trunk, stems, leaves, and fruit bunches of oil palm different from the material W can also be used. Alternatively, other adhesives can be added. For joining one or more oil palm base materials W, a resin component and a sugar component contained in the oil palm base material W are used, and one of either a Lauan base material, a Chinese base material, or a conifer base material. Since the above joining can also be performed firmly, the use of a formaldehyde-based adhesive that causes sick house syndrome is suppressed, and a consolidated material PW using components inherently possessed by oil palm is obtained.

The process of cutting out the oil palm base material W from the oil palm trunk WD having a predetermined length in the above embodiment can be defined as a base material process. The base material process may include a step of lumbering a wood base material such as a straw base material K1 formed from wood other than oil palm such as the straw base material K1. As described above, the step of drying the wood base material such as the straw base material K1 and the oil palm base material W is the same as the step of forming the wood base material such as the base material K1 and the oil palm base material W. Even if it is a process, it may be a separate process, and this can be a drying process.
And the process of laminating a plurality of pre-pressurizing bonding materials NW in a predetermined state with a wood base material such as dried straw base material K1 and oil palm base material W is usually in units of 2 to 5 sheets. However, in principle, two or more layers may be used, and this can be used as an arrangement step.
In particular, by reducing the number of wood base materials such as cocoon base material K1 than the number of oil palm base materials W, at least as compared with conventional plywood, formaldehyde adhesives that cause sick house syndrome Use can be suppressed to 1/2 or less.

Furthermore, the oil palm base material W and the base material of Lauan, China, coniferous tree, persimmon, cedar, rice bran, persimmon leaf, rice cedar, Karamatsu, red pine, chestnut, persimmon, persimmon, persimmon, cherry, persimmon, In order to raise the temperature of the base material using the grain of the cocoons and the like, the process of introducing steam or electric heat and heating or heating with a hot plate can be a heating process because heating energy is supplied. Furthermore, the laminated lawan, china, conifer base material heated by the heating step, persimmon, cedar, rice bran, persimmon leaf, rice cedar, karamatsu, akamatsu, chestnut, persimmon, persimmon, persimmon, cherry, persimmon , Base material made of wood such as oak, oil palm base W and wood grain of cedar, cedar, rice bran, bamboo leaf, rice cedar, pine pine, red pine, chestnut, bamboo shoot, bamboo shoot, bamboo shoot, cherry tree, bamboo shoot, bamboo shoot The step of applying a compressive force in the direction perpendicular to the surfaces of the wood base material and oil palm base material W that have been utilized can be a compression step of compressing at a predetermined compression rate.
In addition, after compressing for a predetermined time in the compression step, the temperature supplied in the heating step is lowered, the compression state of the compact PW is fixed, and the compression force compressed at a predetermined compression rate is released. This can be taken as a fixing step by grasping this from the compact PW.

  As described above, the laminated plywood of the above embodiment is a step S10 in which a predetermined length of oil palm trunk WD is lumbered and formed on a plurality of oil palm base materials W and / or wood base materials such as straw base materials K1. Arrangement comprising: a base material process comprising: a drying process comprising step S11 for drying the oil palm base material W; and a step S12 for laminating a plurality of oil palm base materials W dried in the drying process in a predetermined state. A heating step consisting of a step, heating step S16 to increase the temperature of the laminated lauan base material and oil palm base material W after the placement step, and the laminated oil palm heated by the heating step Applying a compressive force in a direction perpendicular to the surface of the oil palm base material W while restricting the base material W from extending in a direction parallel to the surface of the oil palm base material W. A compression process comprising step S17 for compressing for a fixed time, and an immobilization process comprising step S19 for lowering and cooling and fixing the temperature supplied in the heating process after pressing for a predetermined time in the compression process. To do.

  Therefore, since the oil palm trunk WD used in these steps has no nodes and no annual rings, when the oil palm base material W is created by peeling off from the outer periphery to a predetermined thickness with a rotary race, a uniform oil palm base material W is obtained. As a result, the compact PW made of the oil palm base material W becomes homogeneous. In addition, since the bonding force can be changed by the action of resin components such as lignin contained in the oil palm trunk WD itself and sugars such as cellulose and hemicellulose, depending on the applied temperature and compressive force, the control of the applied temperature and compressive force is possible. Arbitrary adhesive strength can be obtained. And the base that made use of the grain of Lauan, China, coniferous base material, bamboo shoots, cedar, rice buds, bamboo shoots, rice cedar, pine pine, red pine, chestnut, bamboo shoots, bamboo shoots, bamboo shoots, cherry blossoms, bamboo shoots, bamboo shoots Since the material and the oil palm base material W are joined by the action of a resin component such as lignin contained in the oil palm trunk WD itself and a saccharide such as cellulose and hemicellulose, the compacted material PW is formed. Since synthetic rubber is not used as an adhesive, it can be returned to nature without causing pollution problems. Furthermore, due to the compressive force when the oil palm trunk WD itself contains resin components such as lignin and saccharides such as cellulose and hemicellulose, the oil palm substrate W is almost free of voids and becomes a dense structure. Therefore, it has water resistance, is waterproof and insect-proof, and has a long service life even when used as a building material.

The production of the oil palm compacted material of the above embodiment can be generalized as an embodiment of the method for producing an oil palm compacted material as follows.
A base material comprising step S10 comprising a step of cutting out the oil palm base material W from the oil palm trunk WD having a predetermined length and a step of cutting out a base material other than the predetermined length of oil palm, for example, a wood base material such as the straw base material K1. A step of drying the oil palm base material W formed in the base material step and the other base material step S11, and an oil palm base material W and / or other bases dried in the drying step. An arrangement step comprising step S12 of laminating a plurality of wood base materials such as the material K1 in a predetermined state, and the temperature of the oil palm base material W and / or other wood base material laminated after the placement step. To the oil palm base material W and the other wood base material heated by the heating step, and the heating step consisting of step S16 for heating to raise the oil palm base material W and Or while restricting extending in the direction parallel to the surface of the other wood base by the positioning hole 18 or the frame body 20, the oil palm base W and / or the direction perpendicular to the surface of the other wood base The compression process consisting of step S17 for compressing for a predetermined time by applying a compressive force, and the temperature at which the oil palm base material W and / or other wood base material compressed for a predetermined time in the compression process were supplied in the heating process. It can be set as the manufacturing method of the oil palm compacting material which comprises the fixing process which consists of step S19 which descend | falls and fixes.

  The frame body 20 or the positioning hole 18 for positioning each side of the arrangement step of laminating the oil palm base material W or the like dried in the drying step of the above embodiment in a predetermined state is a frame body that regulates a predetermined stacking surface. 20 or the positioning hole 18, which regulates the top and bottom and the left and right of the surface of the oil palm base material W. Therefore, the oil palm base material W is prevented from extending in a direction perpendicular to the surface to which the compressive force is applied, and a thick portion and a thin portion are not generated depending on the position of the compacted material PW.

  In the oil palm compacted material of the above embodiment, one of a plurality of laminated oil palm base materials W is used as a base material that makes use of the wood base material such as the straw base material K1, and the oil palm base material W other than the oil palm base material W is used. In addition, one or more of these are integrally joined as a consolidation material PW. As described above, the compacted material PW obtained by integrally joining the oil palm base material W in the joining composition of the oil palm base material W with one or more sheets other than the oil palm base material W is a laminated oil palm base. By arranging one or more materials W other than the oil palm base material W on the exposed surface on one side as shown in FIG. 7, the wood base material such as the straw base material K1 or the like is used as the oil palm base material W. It can be joined with the adhesive ability. Moreover, it can be set as the design which utilized the grain arrange | positioned in the exposed surface of those one sides. Therefore, only one surface of the consolidation material PW can be made of thin wood made of other materials. In particular, it is suitable for use as a decorative board.

In the arranging step of laminating a plurality of wood base materials and oil palm base materials W such as the persimmon base material K1 of the above-described embodiment in a predetermined state, the plurality of the persimmon base materials K1 and the oil palm base materials laminated. One of the surfaces on one side of W or two of both end surfaces is a wood substrate such as a cocoon substrate K1 made of wood other than the oil palm substrate W, and the cocoon substrate K1 other than the oil palm substrate W A wood base material such as the above is integrally joined as a consolidated material PW. Here, the oil palm base material W can be 1 or more.
Of course, the wood other than the oil palm base material W may be a wood base material such as the cocoon base material K1 or the like, or a Chinese base material or a conifer base material instead of the wood base material such as the cocoon base material K1 or the like. It can also be. Alternatively, one or a combination of the two can be used.

  Since the drying process of step S11 of the method for producing the oil palm compacted material of the present embodiment is to dry the moisture content of the oil palm base material W within a range of 5% to 30%, cracks, deformation, and swelling are caused. , Rupture and the like are prevented. Therefore, more stable dimensional shape is ensured and the yield is high. Moreover, when the moisture content is in a dry state within a range of 5% to 30%, it is also suitable for joining with a Lauan base material, a Chinese base material, a conifer base material, and the like.

  Since the heating temperature in the heating process of step S11 in the production of the oil palm compacted material of the present embodiment is within the range of 110 ° C to 170 ° C, immobilization failure or poor joining between woods in consolidation processing, Further, material deterioration such as surface carbonization and reduction in material strength can be prevented. In addition, when the heating temperature is in the range of 110 ° C. to 170 ° C., it is also suitable for joining with a Lauan base material, a Chinese base material, a conifer base material, and the like.

Since the predetermined compression pressure by the compression process of step S17 in the manufacture of the oil palm consolidated material of the present embodiment is in the range of 1 to 100 kg / cm ² , immobilization defects in the consolidation process and between woods It is possible to prevent poor bonding and occurrence of surface cracks. It was confirmed that there was no problem in joining with Lauan base material, China base material, conifer base material and the like.

  In the production of the oil palm compacted material of the present embodiment, the time required for the heating process in step S16 and the compression process in step S17 is in the range of 10 minutes to 120 minutes. It is possible to prevent the bonding failure between them and the surface carbonization. It has been confirmed by the inventors' experiments that there is no problem in joining with a Lawan base material, a Chinese base material, a conifer base material, or the like.

WD Oil palm trunk W, W1,..., W5 Oil palm base material K1 桧 Base material PW Consolidation material NW Pre-pressing bonding material MC Adhesive plate manufacturing apparatus IS Internal space 10 Press panel 18 Positioning hole 20 Frame body

Claims (5)

An oil palm base material of a predetermined shape lumbered from the trunk of the oil palm;
Overlaid on the oil palm base material, comprising another oil palm base material of a predetermined shape made from the trunk of the oil palm,
An oil palm compact material, wherein the oil palm base materials are consolidated using a resin component and a sugar component contained in the oil palm base materials, and the oil palm base materials are joined together. An oil palm base material of a predetermined shape lumbered from the trunk of the oil palm;
The features disposed on the oil palm substrate, comprising a separate oil palm substrates predetermined shape sawn from the stem of the oil palm,
An oil palm compact material, wherein the oil palm base materials are consolidated using a resin component and a sugar component contained in the oil palm base materials, and the oil palm base materials are joined together. An oil palm base material of a predetermined shape lumbered from the trunk of the oil palm;
Comprising a wood substrate made from wood other than the oil palm,
The oil palm base material and the wood base material are stacked or arranged side by side, and compacted using a resin component and a sugar component contained in the oil palm base material, and the oil palm base material and the An oil palm compacted material in which wood base materials are joined together.   2. The compaction is characterized in that both oil palm base materials are regulated so as not to extend in the surface direction of the plates, and a pressure in a direction perpendicular to the surfaces of the both oil palm plates is applied. The oil palm compacted material according to any one of claims 3 to 4.   5. The consolidation according to any one of claims 1 to 4, wherein pressure is controlled under a predetermined temperature condition, and the pressure is maintained for a predetermined time, decompressed, and fixed. Oil palm compact.