JP2016155296A - Method for injecting chemical into timber, method for manufacturing fireproof timber, method for manufacturing aseptic/ant-proof timber, and method for manufacturing resin-impregnated timber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evenly infiltrate chemicals into the inside of a timber 1 and increase the homogeneity of the injection, for a timber 1 whose surface becomes a decorative surface, when injecting chemicals into the timber 1.SOLUTION: A method for injecting chemicals to a timber includes: forming on a rear face of a timber 1, a large number of wound parts 2,2,... for chemical injection, having a depth not reaching a surface; forming a compression portion 4 at the surface side of the timber 1 by clamping under pressure the surface side of the timber 1, formed with the wound parts 2,2,... for chemical injection, with a roll press device 18 having a hard roll 19, so as to bring a thickness of the timber 1 to 95-50% of a thickness before pressing in a state that the hard roll 19 is brought into contact with the surface of the timber 1, and not to generate cracks visible by visual observation on the surface of the timber 1; and soaking the timber 1 in chemicals in a pressure reduction/pressurizing pan, and while restoring the compression portion 4 in the state so as to bring close to a state before pressurizing, performing pressure reduction/pressurizing injection processing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for injecting chemicals into wood, a method for producing fireproof wood using the method, a method for producing antiseptic and antproof wood, and a method for producing resin-impregnated wood.

  Conventionally, as a method for injecting chemicals into wood of this type, for example, as shown in Patent Document 1, a plurality of insizing blades each provided with a pushing blade on the outer periphery of a body portion are pressed against the front and back surfaces of the wood. In general, a method of forming a micropore and injecting a chemical such as an antiseptic / anticidal agent into the interior of the wood from the micropore is generally known.

Japanese Patent No. 3719862

  By the way, in the thing of the said patent document 1, since the micropore for chemical | medical agent injection | pouring is formed in the front and back of wood, a chemical | medical agent can be inject | poured into the inside of wood, but trying to make the surface of the wood, for example, the decorative surface However, since the micropores are formed, it is not suitable for the decorative surface. That is, it is difficult to apply the technique of Patent Document 1 to wood whose surface is a decorative surface. If the medicine is injected only from the back surface that does not become a decorative surface, the medicine does not penetrate to the surface, which causes a problem of uneven penetration of the medicine.

  The present invention has been made in view of such a point, and its object is to devise a method for injecting a drug into wood, so that even if the surface has a decorative surface, the drug is unevenly distributed inside the wood. It is intended to improve the uniformity of the injection by allowing it to penetrate completely.

  In order to achieve the above object, the present invention forms a wound for injecting a drug on a surface other than the surface of the wood whose surface is a decorative surface, while the surface side has a visible crack. By compressing by compressing to a certain extent and then immersing in the drug in that state and performing a pressure-and-pressure injection treatment, the surface side was restored from the compressed state and the drug was inhaled.

  Specifically, the first invention is a method for injecting chemicals into wood, and this method is for injecting a large number of chemicals at a depth that does not reach the surface on the surface other than the surface of the wood whose surface is a decorative surface. The thickness of the timber is adjusted so that the hard roll is in contact with the surface of the wood by a roll press device having a hard roll on the surface side of the wood on which the wound portion for drug injection is formed and the step of forming the wound portion. A step of forming a compression part on the surface side of the wood by pressing and pressing so that the thickness of the wood before compression is 95 to 50% and no visible cracks are formed on the surface of the wood; It is characterized in that it comprises a reduced pressure injection process step in which wood is immersed in a chemical in a reduced pressure pressurization pot and in that state the compressed part is restored so as to approach the original state before pressurization. And

  In the first aspect of the invention, first, a large number of wounds for drug injection having a depth not reaching the surface are formed on a surface other than the surface of the wood whose surface is a decorative surface. In the next step, the thickness of the wood is 95 to 50% of the thickness before compression, and the surface of the wood is visible on the surface of the wood with a roll press device on the surface side of the wood. Pressurization is performed so as not to cause cracks, and a compression portion is formed on the surface side of the wood by the pressurization. At that time, even if the surface side of the wood is pressed by the hard roll and the compression part is formed on the surface side, there is no visible crack on the surface of the wood, so there is a problem when making the surface of the wood a decorative surface. It does not occur.

  Thereafter, in the pressure-reducing and pressure-injecting treatment step, the wood in which the compression portion is formed by the above-described pressurization is immersed in the medicine in the pressure-reduction and pressure pot, and in that state, the compression portion is restored so as to approach the state before pressurization. Under reduced pressure and pressure injection treatment. By this decompression and pressure injection treatment, the medicine is inhaled as the compression part is restored on the surface side of the wood, and the medicine is impregnated from the surface side on the other hand, while it is formed on the surface other than the surface of the wood. The drug is also impregnated into the wood from the wound for injecting the drug. By this, the chemical | medical agent will be impregnated from both the surface side of a timber and the surface other than that, the chemical | medical agent osmose | permeates the inside of a timber uniformly, and can improve the uniformity of the injection | pouring.

  The second invention is also a method for injecting medicine into wood, and this method forms a large number of wounds for injecting medicine into a surface other than the surface of the wood whose surface is a decorative surface. However, on the surface side of the wood, the thickness of the wood becomes 95 to 50% of the thickness before compression in a state where the hard roll is in contact with the surface of the wood by a roll press device having a hard roll, and the surface of the wood is A step of forming a compression part on the surface side of the wood by pressurizing and pressing so as not to cause a visible crack, and the compressed wood is immersed in a medicine in a vacuum pressurizing pot, and the compression part in that state And a decompression / pressure infusion treatment process for decompressing / injecting under pressure while restoring the pressure so as to approach the original state before pressurization.

  That is, in the first invention, the second invention simultaneously forms a wound for injecting chemicals on wood and pressurizes the surface side of the wood to form a compression part. The same effect as that of the first aspect of the invention can be obtained, and the two steps can be combined, so that an advantage that the steps can be simplified can be obtained.

  3rd invention is 1st or 2nd invention. WHEREIN: In the process of pressurizing the surface side of a timber and forming a compression part, the feed roll or feed flat plate larger in diameter than a hard roll is formed in the back surface side of timber. It makes it contact | abut.

  In the third aspect of the invention, when the compressed surface is formed by pressing the front side of the wood with a hard roll, a feed roll having a diameter larger than that of the hard roll or a feed flat plate made of a flat plate comes into contact with the back side of the wood. In this state, the surface side of the wood is pressed with a hard roll. Due to the difference in the radius of curvature between the hard roll and the feed roll or feed plate for the wood, a greater linear pressure is applied to the front side of the wood than to the back side, and the surface of the wood is intensively pressurized. The compression part can be easily formed on the surface part.

  According to a fourth aspect of the invention, in any one of the first to third aspects of the invention, in the step of pressurizing the front side of the wood to form the compression portion, the back side of the wood or the feed roll or feed that comes into contact with the back side Anti-slip processing is performed on at least one of the flat plates.

  In the fourth aspect of the invention, since at least one of the back side of the wood or the feed roll or the feed flat plate is subjected to anti-slip processing, when the compression side is formed by pressurizing the front side of the wood, the back side of the wood is Pressure is applied so that it does not slip and does not crack on the back. This allows the wood to be selectively pressurized only in the thickness direction, and the compression portion to be easily formed on the surface portion.

  According to a fifth invention, in any one of the first to fourth inventions, in the step of forming the drug injection wound on a surface other than the surface of the wood, the fiber of the wood is cut from the drug injection wound. In the reduced pressure and pressure injection treatment step, the medicine injected from the wound for injecting medicine is infiltrated into the wood along the fiber.

  In the fifth aspect of the invention, in the step of forming the wound for drug injection on the wood, the fibers of the wood are cut short by cutting by the wound for drug injection. Therefore, when the drug is impregnated into the wood in the pressure and pressure injecting treatment process, the medicine injected from each wound for injecting the drug permeates along the short fiber from the wound for injecting the drug into the wood. With this, the drug can be smoothly penetrated in the fiber direction of the wood.

  6th invention is a method of manufacturing fire prevention wood by the chemical | medical agent injection | pouring method to the wood of any one of 1st-5th invention, Comprising: The chemical | medical agent is a water-system fireproof chemical | drug | medicine, and this fireproof chemical | medical agent was inject | poured It is characterized by comprising a drying step for drying the wood after the reduced pressure and pressure injection treatment step.

  In the sixth aspect of the invention, the water-based fireproofing agent as the agent is injected, and then the wood is dried. This makes it easy to obtain fireproof wood in which fireproofing agents are uniformly impregnated into the wood.

  The seventh invention is a method for producing antiseptic / anticidal wood by the method of injecting chemicals into any one of the first to fifth inventions, wherein the chemical is an aqueous antiseptic / anticidal chemical, The present invention is characterized in that a drying step for drying the wood is provided after the pressure and pressure injection treatment step in which the antiseptic / anticidal agent is injected.

  In the seventh aspect of the invention, after the water-based antiseptic / anticidal agent as a medicine is injected, the wood is dried. This makes it possible to easily obtain an antiseptic / anticidal wood in which the antiseptic / anticidal agent is uniformly impregnated into the wood.

  The eighth invention is a method for producing a resin-impregnated wood by the method of injecting chemicals into any one of the first to fifth inventions, wherein the chemical is a resin, and the pressure is reduced by injecting the resin. It is characterized by having a solidification step of solidifying the resin of wood after the injection treatment step.

  In the eighth invention, after the resin as the medicine is injected, the resin of the wood is solidified. Thus, a resin-impregnated wood in which the resin is uniformly impregnated into the wood can be easily obtained.

  As described above, according to the present invention, the surface of the wood is roll-pressed while forming the wound portion for injecting the drug into the surface other than the surface of the wood whose surface is a decorative surface and having a depth that does not reach the surface. To compress the pressure on the surface of the wood so that no visible cracks occur, forming a compression part on the surface side, and immersing the wood in the chemical in a vacuum pressurizing pot to restore the compression part and decompressing the pressure injection process By doing so, even if the wood has a surface to be used as a decorative surface, the drug is uniformly permeated into the interior of the wood from both the surface side of the wood and other surfaces, thereby improving the uniformity of the injection. be able to.

FIG. 1 is a diagram showing steps of a method for injecting chemicals into wood, a method for producing fireproof wood, a method for producing antiseptic / anticidal wood, and a method for producing resin-impregnated wood according to an embodiment of the present invention. FIG. 2 is a schematic view of a wood conveyance path provided with apparatuses used in the wound part forming process and the compression part forming process. FIG. 3 is a plan view showing a wound portion for drug injection formed on the back surface of the wood in the wound portion forming step. FIG. 4 is an enlarged cross-sectional view schematically showing a wood into which a medicine has been injected. FIG. 5 is a diagram showing test conditions for the examples and comparative examples. FIG. 6 is a photograph showing test results of Examples and Comparative Examples.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the embodiments is merely illustrative in nature and is not intended to limit the present invention, its application, or its use at all.

  FIG. 1 (a) schematically shows the steps of a method for injecting medicine into wood according to an embodiment of the present invention. This method is a method for injecting medicine into the wood, and a wound formation step P1, compression A part forming process P2 and a reduced pressure injection process P3 are provided.

(wood)
FIG. 4 shows a wood 1 into which a medicine has been injected by the medicine injection method according to the embodiment. The wood 1 is a long plate having a rectangular cross section, for example, whose surface (upper surface in FIG. 4) is a decorative surface. For example, cedar, pine, cypress, etc.

(Scratch formation process)
The wound formation process P1 is an insizing process. In this process P1, for example, the back surface (the lower surface in FIG. 4), which is a surface other than the surface of the wood 1, has a depth that does not reach the surface. .. Are formed.

  That is, FIG. 2 shows a conveyance path for conveying the wood 1 from the right side to the left side in the drawing along the length direction. In this conveying path, a plurality of conveying rolls 16, 16,... Having a horizontal rotation axis are arranged vertically opposite to each other, and the wood 1 is on the upper surface between the upper and lower conveying rolls 16, 16, and the back surface. Is conveyed in the length direction.

  On the upstream side of the conveyance path (the right side portion in FIG. 2), a wound portion forming apparatus 8 used in the wound portion forming step P1 is installed. The scratch forming device 8 includes a lower cutter roll 9 having a horizontal rotation axis, and an upper pressing roll having a horizontal rotation axis that is disposed directly opposite the cutter roll 9. 13, and a conveying path for the wood 1 is formed between the rolls 9 and 13.

  The blade roll 9 has a roll body 10 and a large number of blade portions 11, 11,... Projecting on the outer peripheral surface thereof at intervals in the circumferential direction, and each blade portion 11 has a pointed tip, for example. It has a slightly wide shape, and the protruding heights h of the blade portions 11, 11,... Are the same as each other and are set smaller than the thickness t between the front and back surfaces of the wood 1 (h <t). Thus, when the wood 1 is transported between the blade roll 9 and the pressing roll 13, the wood 1 is pressed against the blade roll 9 by the pressing roll 13, and the blades 11, 11,. A large number of wounds 2, 2,... For drug injection having a depth that does not reach the surface are formed on the back surface of 1.

  For example, two types of blade rolls 9 are prepared in which the directions of the blade portions 11 are different from each other (note that the directions of the blade portions 11, 11,... Are not limited to two types). That is, each blade portion 11 is arranged with its width direction along the circumferential direction of the roll body 10 and a direction intersecting the circumferential direction of the roll body 10 (for example, parallel to the rotation center of the roll body 10). 2) and those arranged in a direction along the direction. When the width direction of the blade portion 11 is the direction along the circumferential direction of the roll body 10 as in the former, the length direction of the wood 1 (see FIG. A large number of wounds 2, 2,... For drug injection are formed along the horizontal direction 3 (a). The direction of the drug injection wounds 2, 2,... Is the direction along the fiber direction of the wood 1 (the length direction of the wood 1), so that the fibers are not cut by the blades 11, 11,. In this case, the chemical injection wounds 2, 2,...

  On the other hand, when the width direction of the blade portion 11 is a direction along the direction intersecting the circumferential direction of the roll body 10 as in the latter, and is a direction parallel to the rotation center of the roll body 10, FIG. As shown in FIG. 3, on the back surface of the wood 1, there are a large number of wounds 2, 2,... For drug injection arranged in a direction perpendicular to the length direction of the wood 1 (left and right direction in FIG. 3B). It is formed. The direction of the wounds for drug injection 2, 2,... Is a direction intersecting the fiber direction of the wood 1, and the fibers are cut by the blades 11, 11,. That is, in this case, wounds 2, 2,... For drug injection are formed on the back surface of the wood 1 so that the fibers of the wood 1 are cut.

  The lower conveying rolls 16, 16,... Located on the downstream side of the scratched part forming device 8 press down the back surface of the wood 1 on which the scratched parts 2, 2. It has a role to prevent the part from being turned up by the wound parts 2, 2,.

(Compression part forming process)
The compression part forming process P2 is a roll press process. In this process P2, the surface side of the wood 1 on which the wound parts 2, 2,... Form.

  On the downstream side of the conveyance path shown in FIG. 2 (the left portion in FIG. 2), a roll press device 18 used in the compression portion forming process P2 is installed. This roll press device 18 is arranged to face an upper hard roll 19 having a horizontal rotation axis and directly below the hard roll 19, and has a horizontal rotation axis having a larger diameter than the hard roll. A lower feed roll 20 is provided, and a conveying path for the wood 1 is formed between them.

  The feed roll 20 is formed by lining a rubber resin or other lining resin material 20b on the outer peripheral surface of a columnar or cylindrical iron core roll 20a. It is designed to receive pressure. On the other hand, the hard roll 19 has a columnar shape or a cylindrical shape, and its outer peripheral surface is made of a hard material such as iron. And in the conveyance path between the hard roll 19 and the feed roll 20 of the roll press device 18, the surface of the wood 1 having the above-mentioned wounds 2, 2. The back surface is conveyed in contact with the feed roll 20. Along with this conveyance, the surface side of the wood 1 is pressed and pressed by the roll press device 18 in a state where the hard roll 19 is in contact with the surface of the wood 1, and the thickness of the wood 1 is the thickness before compression. Thus, the compression part 4 in which a part of the timber 1 is crushed is formed on the surface side of the timber 1 by pressing and pressing so as not to cause a visible crack on the surface of the timber 1.

  At that time, the hard roll 19 (front-side feed roll) is brought into contact with the front surface side of the wood 1 and the feed roll 20 (back-side feed roll) having a larger diameter than the hard roll 19 is brought into contact with the rear surface side. A larger linear pressure is applied to the surface side of the wood 1 to which the roll 19 hits than to the back side to which the feed roll 20 hits, so that the compression portion 4 is formed on the surface side. That is, since the linear pressure larger than the back surface side is applied to the surface side of the wood 1 due to the difference in curvature radius between the hard roll 19 and the feed roll 20 with respect to the wood 1, the surface portion of the wood 1 is concentrated. The compression part 4 can be easily formed in the surface part by being pressurized.

  Moreover, even if the surface side of the wood 1 is pressed by the hard roll 19 and the compression part 4 is formed on the surface side, the surface of the wood 1 is pressed so as not to cause a visible crack. There is no problem with cracks when the surface is a decorative surface.

  If the ratio of the thickness before compression of the wood 1 to the thickness of the wood 1 before compression is greater than 95%, the compression portion 4 cannot be formed sufficiently, and the amount of drug injected into the surface side is insufficient. On the other hand, if it is less than 50%, the surface side is excessively compressed and there is a high possibility that cracks will occur on the surface of the wood 1, so 95 to 50% is preferable.

  Moreover, it can replace with the said feed roll 20 and can provide the plate-shaped feed flat plate which has a flat upper surface, and can contact | abut (slidably contact) this feed flat plate with the back surface side of the timber 1. FIG. Also in that case, the compression part 4 can be formed in the surface side by applying a larger linear pressure to the front surface side of the wood 1 than on the back surface side.

  In the above, it is preferable to further selectively compress the surface side of the wood 1 by changing the hardness of the front side feed roll and the back side feed roll. Specifically, the surface of the wood 1 is selectively compressed by the front-side feed roll by setting the hardness of the front-side feed roll to be higher than the hardness of the back-side feed roll.

  In the compression part forming step P <b> 2, the feed roll 20 with which the back surface of the wood 1 abuts may be subjected to a non-slip process so that the back surface of the wood 1 does not slip with respect to the feed roll 20. This anti-slip process can be performed by roughening the surface by fine surface edging, surface edging, wearing paper, etc., or by integrating metal, hard plastic, elastic rubber, elastic resin, etc. . By such anti-slip processing, the wood 1 is selectively pressed in the thickness direction so that the back surface of the wood 1 does not slip and cracks do not enter when the wood 1 is pressed from the surface. Can do. Note that the anti-slip process may be applied to the back surface of the wood 1 instead of the feed roll 20, or the anti-slip process may be applied to both the feed roll 20 and the back surface of the wood 1.

(Pressure and pressure injection treatment process)
The decompression / pressure injection processing step P3 is performed outside the conveying path shown in FIG. 2, and in the decompression / pressure injection processing step P3, the wood 1 on which the compression section 4 is formed is decompressed and pressurized (not shown). ) Is immersed in the medicine, and in that state, the decompressed and pressurized injection process is performed while restoring the crushed compression part 4 so as to approach the original state before pressurization. Thus, on the surface side of the wood 1, the medicine is inhaled as the compression part 4 is restored, and the medicine 1 is impregnated into the wood 1 from the surface side. On the other hand, on the back surface of the wood 1, the drug is impregnated in the wood 1 from the drug injection wounds 2, 2.

  Thus, on the surface side of the wood 1, the medicine is inhaled along with the restoration of the compression portion 4, and the medicine is impregnated on the surface side of the wood 1, while on the back surface of the wood 1, the wound portion 2 for injecting medicine 2 2 and so on, since the medicine is impregnated in the wood 1, the medicine is impregnated from both the front side and the back side in the wood 1, and the medicine penetrates the inside of the wood 1 evenly, The uniformity of the injection can be improved.

  Examples of the agent include fireproofing agents, antiseptic / anticidal agents, fungicides, and resins. Examples of fireproofing agents include phosphoric acid flame retardants, phosphorous nitrogen flame retardants, boron flame retardants, halogen compound flame retardants, and silicic acid flame retardants. When an aqueous fireproofing agent is used, as shown in FIG. 1 (b), a drying step P4 for drying the wood 1 may be provided after the decompression and pressure injecting treatment step of injecting the fireproofing agent (medicine). desirable. In this way, since the wood 1 is dried after the water-based fireproofing agent is injected, fireproofing wood in which the fireproofing agent is uniformly impregnated in the wood 1 can be easily obtained.

  Examples of the antiseptic / anticidal agents include water-soluble fluoride agents, arsenic compound agents, chromium compound agents, copper compound agents, phenol agents, amine agents, and the like. Examples of oil-soluble antiseptic / anticidal agents include pentachlorophenol, trichlorophenol, and nitrophenol. When the water-based antiseptic / anticidal agent is used, as in the case of the fire-preventing agent, as shown in FIG. 1 (b), a drying step P4 is provided after the pressure-injection processing step of injecting the agent. Is desirable. In this way, the wood 1 is dried after the water-based antiseptic / anticidal agent is injected, so that the antiseptic / anticidal wood in which the antiseptic / anticidal agent is uniformly impregnated in the wood 1 can be easily obtained.

  Moreover, a general thing is used as a fungicide.

  Furthermore, examples of the resin include synthetic resins such as phenolic resins, melamine resins, urea resins, epoxy resins, urethane resins, polyester resins, alkyd resins, vinyl chloride resins, and acrylate resins. For these resins, a polymerization initiator is added as required, and as shown in FIG. 1 (c), heating, UV irradiation, electron beam irradiation are performed after the pressure-and-pressure injection process step in which the chemical is injected. It is desirable to provide a solidification step P5 that is solidified (cured) by, for example. In this way, after the resin as the medicine is injected, the resin of the wood 1 is solidified, so that the resin-impregnated wood in which the resin is uniformly impregnated into the wood 1 can be easily obtained.

  In the scratch formation step P1, on the back surface of the wood 1, as shown in FIG. 3B, a number of wounds 2, 2,... For drug injection arranged along the direction orthogonal to the length direction of the wood 1. Is formed, the fibers of the wood 1 are cut short by cutting with the blade portions 11, 11,..., So that when the medicine is impregnated in the wood 1 in the pressure-and-pressure injection treatment process P3, The drug injected from each of the wounds 2, 2,... Penetrates into the wood 1 along the fiber direction. This allows the drug to smoothly penetrate into the fiber direction of the wood 1.

  The wood 1 obtained in this manner is impregnated with the drug evenly therein, and the uniformity of drug injection is improved.

[Other Embodiments]
In the embodiment described above, the flaw formation process P1 and the compression part formation process P2 may be performed simultaneously. That is, in the scratch forming apparatus 8, the pressing roll 13 is replaced with the hard roll 19 of the roll press apparatus 18, and the roll press apparatus 18 itself is omitted, or conversely, in the roll press apparatus 18, the hard roll 19 May be replaced with the pressing roll 13 of the wound part forming apparatus 8, and the feed roll 20 may be replaced with the blade roll 9, and the wound part forming apparatus 8 itself may be omitted. By doing so, forming the wound portions 2, 2,... For drug injection on the wood 1 and forming the compression portion 4 by pressing the surface side of the wood 1 are performed at the same time. Therefore, the process can be simplified.

  Moreover, in the said embodiment, although the wound part 2,2, ... for chemical | medical agent injection | pouring is formed in the back surface of the timber 1, the chemical | medical agent wound part 2 should just be formed in surfaces other than the surface of the timber 1. It may be.

  Next, specific examples will be described.

(Example)
As shown in FIG. 5, a cedar board material having a thickness of 15.5 mm was used as the wood. A plurality of flaws (stab wounds) having a width of 1 to 2 mm and a depth of 7 to 10 mm were formed on the back surface of the cedar plate material at intervals of about 8 mm with a blade roll. The width direction of the scratch was the fiber direction of the cedar board (see FIG. 3A).

  Next, a rubber plate having a thickness of 2 mm is laid on an iron plate having a thickness of 2 mm, and the cedar plate material is placed thereon to form a laminate having a total thickness of 19.5 mm. This laminate is rolled in an atmosphere at room temperature. Pressure pressing was performed between the upper and lower iron rolls (hard rolls) of the press device. The distance between the upper and lower iron rolls was 16.5 mm. By this pressurization, the thickness of the wood became 13.0 mm, which was 83.9% of the thickness before compression.

  An 11 cm square test piece was cut out from this cedar board, and its end was sealed with an epoxy adhesive, and a dye (toluidine blue 0.1%) was added as a chemical (fireproofing agent) in a vacuum and pressure pot. It was immersed in a flame retardant (trade name “Nonen W-200” manufactured by Maruhishi Oil Chemical Co., Ltd., an aqueous solution with a concentration of 30%), and subjected to a pressure and pressure injection treatment. The decompression condition was -0.085 MPa for 1 hour, and the pressurization condition was 1.0 MPa for 1 hour. Then, it ventilated with the dryer and dried at 60 degreeC for 1 hour.

(Comparative Example 1)
In an Example, it is an unprocessed example except only the formation of the damage | wound part to the back surface by a cutter roll, and the pressurization by a roll press apparatus, and others are the same as an Example (refer FIG. 5).

(Comparative Example 2)
In an Example, it is an example of only the insizing which performed the formation of the damage | wound part to the back surface with a blade roll except the pressurization by a roll press apparatus, and others are the same as an Example (refer FIG. 5).

(Comparative Example 3)
In an Example, it is an example of only the roll press which performed the pressurization by a roll press apparatus except only formation of the damage | wound part to the back surface by a cutter roll, and others are the same as an Example (refer FIG. 5).

(Injection uniformity confirmation test)
The test pieces of Examples and Comparative Examples were cut in half, and the injection uniformity of the drug was observed from the colored portion of the drug dyed in the cross section. The result is shown in FIG. In FIG. 6, the black part in the cross section of the test piece is a part colored by the dye of the drug (actually the blue color of the dye) and the part injected with the drug, and the white part is colored because the drug is not injected Indicates that it is not. Moreover, the injection amount of the medicine was measured, and the result is shown in FIG.

  Considering this FIG. 6, in Comparative Example 1 (no treatment), Comparative Example 2 (only insizing), and Comparative Example 3 (only roll press), there was a portion where no drug was injected (uncolored portion). In the examples, the injection of the drug by coloring was confirmed over the entire cross section of the test piece by the insizing of the back surface and the formation of the compressed part by the roll press on the front surface. It is clear that the uniformity of implantation is improved.

  In addition, as shown in FIG. 5, in Comparative Example 2 in which only insizing is performed, the amount of medicine injected is increased as compared to the Example, but this is because the injected medicine accumulates on the back side of the wood and is unevenly distributed. Therefore, it is presumed that the amount of drug injection is increased, and it does not contribute to the uniformity of drug injection.

Moreover, about Example 1, the fireproof performance accompanying injection | pouring of the said fireproofing agent was confirmed. The injection amount of the drug is 119 kg / m ³ in terms of solid content of the flame retardant, and the exothermic test with a cone calorimeter was performed using a sample coated with a non-combustible paint on the surface, and the total calorific value for 20 minutes was measured. 3.4 MJ / m ² was obtained, and it was confirmed that 8.0 MJ / m ² or less required as a non-combustible material in the standards of the Building Standard Law could be cleared.

  The present invention is extremely useful because even if it is a wood having a surface to be a decorative surface, the medicine can be uniformly permeated into the wood and the uniformity of the injection can be improved.

P1 wound part formation process P2 compression part formation process P3 decompression pressure injection treatment process P4 drying process P5 solidification process 1 wood 2 drug injection wound part 4 compression part 8 wound part forming device 9 blade part 11 blade part 13 presser roll 18 roll Press device 19 Hard roll 20 Feeding plate

Claims (8)

Forming a number of wounds for drug injection at a depth not reaching the surface on a surface other than the surface of the wood whose surface is a decorative surface;
The thickness of the wood before compression is 95 to 95 mm in a state where the hard roll is in contact with the surface of the wood by a roll press device having a hard roll on the surface side of the wood on which the wound for drug injection is formed. Forming a compression part on the surface side of the wood by pressing and pressing so that 50% and visible cracks on the surface of the wood do not occur;
A vacuum pressure injection treatment step of immersing the wood in which the compression portion is formed in a chemical in a vacuum pressure vessel and restoring the compression portion so as to approach the state before pressurization in that state. A method for injecting chemicals into wood, comprising: While forming a large number of wounds for injecting a drug having a depth not reaching the surface on a surface other than the surface of the wood whose surface is a decorative surface, the surface side of the wood is By pressing and pressing so that the hard roll is in contact with the surface of the wood, the thickness of the wood is 95 to 50% of the thickness before compression and no visible cracks are formed on the surface of the wood. Forming a compression portion on the surface side;
A vacuum pressure injection treatment step of immersing the wood in which the compression portion is formed in a chemical in a vacuum pressure vessel and restoring the compression portion so as to approach the state before pressurization in that state. A method for injecting chemicals into wood, comprising: In claim 1 or 2,
A method of injecting a chemical into wood, wherein in the step of forming a compression portion by pressurizing the surface side of the wood, a feed roll or feed plate having a diameter larger than that of the hard roll is brought into contact with the back side of the wood. In any one of Claims 1-3,
In the step of pressurizing the surface side of the wood to form the compression portion, the chemical injection into the wood is characterized in that at least one of the back side of the wood or the feed roll or the feed flat plate with which the back side abuts is subjected to anti-slip processing Method. In any one of Claims 1-4,
In the step of forming a wound for drug injection on a surface other than the surface of the wood, the wound for drug injection is formed so that the fibers of the wood are cut,
A method of injecting medicine into wood, wherein the medicine injected from the wound for injecting medicine is infiltrated into the wood along the fibers in the reduced pressure injection treatment step. A method for producing fire-proof wood by a method for injecting chemicals into any one of the woods according to claim 1,
The chemical is a water-based fire prevention chemical,
A method for producing fireproof wood, comprising a drying step of drying the wood after the pressure-reducing and pressure-injecting treatment step in which the fireproofing agent is injected. A method for producing antiseptic and ant timber by a method of injecting chemicals into any one of the woods according to claim 1,
The drug is a water-based antiseptic / anticidal drug,
A method for producing antiseptic / anticidal timber, comprising a drying step of drying the timber after the decompression / pressure injecting step of injecting the antiseptic / anticidal agent. A method for producing a resin-impregnated wood by a method for injecting chemicals into any one of the woods according to claim 1,
The drug is a resin,
A method for producing a resin-impregnated wood, comprising: a solidification step of solidifying a resin of wood after the pressure-and-pressure injection treatment step of injecting the resin.