JP3727251B2 - Manufacturing method of building materials - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a building material, in which a building material used for a base or a pillar material of a wooden house is manufactured by laminating a plurality of sawing boards.
[0002]
[Prior art]
Traditionally, building materials used for bases, pillars, girders, etc. for wooden houses have been made from monolithic lumber, but it has become difficult to obtain lumber with a large cross-sectional area. Glulams made by laminating ground slabs are often used. In addition, according to the law to ensure high-quality housing, for example, the Japanese Agricultural Standards (such as structural lumber standards) are established as a standard for preserving the base with antiseptic / anticidal agents, and located 10 mm from the base surface. Up to 80% or more of the preservative / anticide must be contained (equivalent to preservation treatment K3 or more in structural lumber standards). Corresponding to this, for example, JP 2000-153508 A discloses a laminated material in which the materials are divided into the uppermost layer, the intermediate layer, and the lowermost layer and laminated. In other words, the same material is used for the upper and lower layers of the sawing board, and the material of the sawing board used for the intermediate layer is selected from a wide range of tree species, from weak to strong tree species, and integrated by bonding. A material is disclosed. Further, as a method for preserving wood, for example, in Japanese Patent Application Laid-Open No. 8-25311, a laminated material obtained by laminating saw plates with an adhesive is placed in a pressure vessel, and the pressure vessel is pressurized to be preserved and preserved. A method for forcibly impregnating an ant is disclosed.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned conventional method, a laminated board is laminated through an adhesive to form a laminated material, and in the state of the laminated material, a preservative / anticide is forcibly impregnated. The vicinity is impregnated with an antiseptic / anticidal agent, but it is not sufficiently impregnated near the center part deep from the surface. In particular, the laminated material formed by arranging hard materials such as bay pine and bay hive in the uppermost layer and the lowermost layer is impregnated only to a slight depth from the surface, for example, about 1 to 5 mm. There was a problem that sometimes did not satisfy.
In addition, a laminated material formed of a soft material such as Japanese cedar material is sufficiently impregnated from the surface to a depth of, for example, about 10 mm. However, the strength as a base material, for example, the compressive strength when standing a column material ( Or, there is a problem that it cannot be used as a foundation because the penetration strength is insufficient.
The present invention has been made in view of such circumstances, and a method for producing a building material that can sufficiently ensure a compressive strength (indentation strength) and that is sufficiently deeply impregnated with an antiseptic / antalistic agent and satisfies the standards for storage processing. The purpose is to provide.
[0004]
[Means for Solving the Problems]
The manufacturing method of the building material according to the first invention that meets the above-mentioned object is as follows.This hard grinding board used for the uppermost layer and the lowermost layer is subjected to an insizing treatment, followed by a steaming treatment and a decompression treatment to perform a pretreatment process for spreading the resin of the hard grinding board and releasing the torus. After the grinding board is dried, it is treated with an antiseptic and ant repellant, and is further subjected to an artificial drying process to perform planar processing.
2 or 3 or more soft grinding boards are used for the intermediate layer arranged between the uppermost layer and the lowermost layer, and the soft grinding boards are subjected to insizing treatment and then dried to prevent preserving and prevention. Perform ant treatment, perform artificial drying treatment, and perform planar processing,
A method of manufacturing a building material for joining a hard saw board and a soft saw board subjected to each planar processing,
After the hard grinding board used for the uppermost layer and the lowermost layer is dried, and before the antiseptic / anticidal agent treatment, the surface of the hard grinding board is pre-cut, and the soft grinding board used for the intermediate layer. After pre-drying, before preserving antiseptic / anticide, pre-cutting the surface of the soft grinding board,
Moreover, after the hard grinding board used for the uppermost layer and the lowermost layer is treated with an antiseptic / anticidal agent, it is subjected to curing treatment at room temperature before artificial drying treatment, and a soft grinding board used for the intermediate layer is obtained. After treatment with antiseptic / anticidal agent and before artificial drying treatment, curing treatment of soft ground board at room temperatureI do.
As a result, each of the uppermost, intermediate and lowermost grinding plates is impregnated with an antiseptic / anticidal agent by performing insizing treatment in a state of a flat plate having a thickness of 20 to 40 mm, for example. Is impregnated with antiseptic / anticidal agents from the front and back and both sides In particular, the soft material of the intermediate layer is substantially impregnated to the center, and when the ground layers of the uppermost layer, the intermediate layer and the lowermost layer are laminated and bonded with an adhesive, they are also near the center. Since a part that is sufficiently impregnated with antiseptic / anticidal agents will be formed, building materials that satisfy the standards for preservation processing (equivalent to the performance category K3 of preservation treatment in structural sawing standards, etc.), especially foundation materials can get. In addition, since two or three or more soft material saw plates are used for the intermediate layer, for example, by laminating the warp directions back to back so as to cancel the warpage of adjacent saw plates,TheSmallThecan do.
[0005]
By steaming, for example, the temperature is raised to about 115 ° C. and softened, and the resin (resin) inherent to the wood contained in the wood is diffused, and the torus that is the valve mechanism of the wood conduit structure is opened, Makes preservatives easy to penetrate. Further, by reducing the pressure (vacuum treatment) to a vacuum of about −760 mmHg, for example, the inside of the conduit structure can be evacuated and the wood structure can be easily impregnated with the antiseptic / antifungal agent.
In the pretreatment step, a high-temperature drying treatment with hot air may be performed after the decompression treatment.
In this case, moisture remaining in the wood structure can be removed, and the antiseptic / anticide can be more easily impregnated. In the case of sufficiently dried wood (moisture content of about 9 to 13%) or a hard material that is easily impregnated with an antiseptic / anticidal agent, it is not necessary to perform a high-temperature drying treatment.
The antiseptic / anticidal agent impregnated in each grinding board is stabilized by the artificial drying process, and the thickness dimension of each grinding board can be accurately determined by the planar processing, and the dimensional error can be reduced.
[0006]
In the method for manufacturing a building material according to the first invention,For the hard saw board used for the top layer and the bottom layerAfter antiseptic / anticidal treatment, impregnated with reinforcing resin and curedMay be allowed.
In this case, even if hard materials are used for the uppermost layer and the lowermost layer, and soft wood (including thinned wood) such as cedar, cypress, tsuga, whitewood is used for the intermediate layer,HardSince the strength of the material is increased and deterioration due to decay and ant damage is prevented, a high-quality building material, particularly a base material can be obtained.
[0007]
Also, use one of bay pine, red pine, black pine, apiton, or kruin as the uppermost and lowermost slabs, and cedar, cypress, tsuga, bay as the intermediate slabs.TsugaAny one of whitewood may be used.
In this case, by using a hard bay pine, red pine, black pine, etc., which has a high shear strength for the uppermost layer and the lowermost layer, for example, the compressive strength (recessed) required when a pillar material is placed on the base. Strength) is 30kg / cm² The above building materials, in particular, high-quality foundation materials can be obtained. In addition, the use of softwood sawed wood, such as cedar and cypress, which includes thinned wood in the middle layer, can greatly contribute to the promotion of the use of domestic timber, which is required to protect domestic forests.
[0008]
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is a block diagram of processing equipment used in the manufacturing method for building materials according to the first embodiment of the present invention, FIG. 2 is a flowchart showing the steps of the manufacturing method, and FIG. 3 is manufactured by the manufacturing method. FIG. 4 is a configuration diagram of processing equipment used in the method for manufacturing a building material according to the second embodiment, and FIG. 5 is a flowchart showing the steps of the manufacturing method.
[0010]
As shown in FIG. 1, the processing equipment 10 used for the manufacturing method of the construction material which concerns on the 1st Embodiment of this invention is about 4 m in length, and the front and back of the grinding board 11 about 20-40 mm in thickness, and An insizing device 12 is provided for attaching ridges having a width of 1 to 3 mm, a length of 10 mm, and a depth of 10 mm on both side surfaces. The insizing device 12 is provided with a plurality of insizing blades 14 on the surface of four cylindrical rotating drums 13 and rotates the rotating drum 13 while pressing the insizing blades 14 on the front and back surfaces and both side surfaces of the grinding plate 11. Thus, the grind plate 11 is provided with a ridge 15. In the vicinity of the insizing device 12, a pretreatment device 16 is provided for steaming and depressurizing the plurality of saw plates 11 to which the scissors 15 are attached by the insizing device 12. The pretreatment device 16 includes a pretreatment tank 17 into which a plurality of saw plates 11 can be charged, and a steam generator 18 that blows steam of about 120 ° C. (vapor pressure is about 2 atm) into the pretreatment tank 17. Is provided so that the plurality of saw plates 11 charged in the pretreatment tank 17 can be heated to about 115 ° C. The pretreatment tank 17 is provided with a vacuum pump 19 so that the inside of the pretreatment tank 17 can be depressurized (vacuum treatment) to, for example, about -760 mmHg.
[0011]
In the vicinity of the pretreatment tank 17, there is provided a predrying chamber 20 provided with an air conditioner 20 </ b> A that keeps the room temperature constant and drying the pretreated grinder 11 at room temperature. A first planar 22 is provided to smooth the front and back surfaces of the dried saw plate 11 with a rotary cutter 21 by preliminary cutting, for example, about 1 mm.
In the vicinity of the first planar 22, an antiseptic / anticidal agent such as creosote, ACQ (a preservative containing ammonia, copper, and a quaternary ammonium salt as an active ingredient), for example, is applied to the precut ground board 11. A chemical liquid impregnation device 23 for impregnating the liquid is provided. The chemical liquid impregnation device 23 is equipped with a pressure-resistant tank 24 into which a plurality of saw plates 11 can be charged, a storage tank 25 for storing antiseptic / anti-anticide, and supplying anti-septic / ant-proofing agent from the storage tank 25 to the pressure-resistant tank 24. A pressure pump 26 capable of pressurizing the inside of the pressure tank 24 to 14 to 18 atmospheres is provided so that the saw plate 11 is impregnated with an antiseptic / anticide.
[0012]
In the vicinity of the chemical liquid impregnation device 23, an artificial drying device 27 is provided for heating and drying the plurality of saw plates 11 with high frequency. Note that high-pressure steam, superheated steam, or hot air may be used as a heating source.
In the vicinity of the artificial drying device 27, there is provided a second planar 29 for smoothly processing the front and back surfaces of the plurality of ground plates 11 subjected to drying with a rotary cutter 28 made of a woodworking spiral mill. In the vicinity of the second planar plate 29, there is provided a laminating work table 30 for applying and laminating, for example, a phenol-based or urea-based adhesive on the front and back surfaces of the ground plate 11 processed smoothly. In the vicinity of the laminating work table 30, there is provided a joining press 32 that forms a laminated material 31 by performing a joining process by pressurizing the grinding plate 11 from above and below by hydraulic pressure in the laminated state. In the vicinity of the joining press 32, there is provided a curing room 33 for accumulating the laminated material 31 and curing it for about 7 to 10 days. Further, in the vicinity of the curing chamber 33, there is provided a third one provided with four rotary cutters 34 such as a spiral mill for woodworking and a rotary punch for smoothly finishing the four surfaces of the laminated material 31 on the front and back surfaces and both side surfaces. A planar 35 is provided to form a base material 36 that is an example of a building material. A finishing device 37 that can be finished with a sander (for example, a polishing sheet) is provided in the vicinity of the third planar plate 35 so as to form a glossy bark on the surfaces of the pillars and girders.
[0013]
Here, the manufacturing method of the building material which concerns on the 1st Embodiment of this invention is demonstrated in order of a process with reference to FIG.
(1) First, as the saw plate 11, the shear strength is, for example, 75 to 70 kg / cm.² Hard bay pine, which is a difficult-to-inject material, and a shear strength of 55-60 kg / cm² Soft cedar materials of the order of about 10 to 135 mm in width, 25 to 35 mm in thickness, and at least two hard grinding boards 11A that have been cut and processed to a length of about 4 m, and a soft grinding board 11B Two or three or more sheets are prepared in the material storage (step S1).
Hard wood is made of pine, black pine, apiton, cruin, etc., and soft wood is made of cypress, tsuga, baitsuga, whitewood, etc. Pp. 189, February 20, 1992, published by Toyo Keizai Inc.) can also be used.
(2) The sawing board 11 (the hard sawing board 11A and the soft sawing board 11B) is transported from the material place to the insizing device 12, and the surface of the sawing board 11 is insized by the insizing device 12, and the front and back surfaces and both side surfaces. A paddle 15 having a width of 1 to 3 mm, a length of 10 mm, and a depth of about 10 mm is attached to make the antiseptic / anticidal agent easily enter the grinding plate 11 (step S2).
[0014]
(3) Among the sawing plates 11 subjected to the insizing process, the hard sawing plate 11A is charged into the pretreatment tank 17 of the pretreatment device 16, and is supplied from the steam generator 18 into the pretreatment tank 17. Steam of 2 atm is blown in to pressurize, and the grind plate 11 in the pretreatment tank 17 is heated to a temperature of about 115 ° C. to perform the steaming process and maintain for 40 to 60 minutes (step S3). As a result, the resin of the hard saw board 11A is diffused, and the Torus (the valve mechanism of the conduit structure) is opened, so that the antiseptic / anticide is easily injected into the saw board 11.
(4) Next, as an example of the decompression process in the pretreatment tank 17 by the vacuum pump 19, the pressure is reduced to, for example, about −760 mmHg, and the vacuum process is performed and held for 40 to 60 minutes (step S4).
As a result, the inside of the conduit structure of the hard saw plate 11A is evacuated, and the antiseptic / anticide is easily diffused into the hard saw plate 11A.
[0015]
(5) After the vacuum treatment, the vacuum pump 19 is stopped, steam is again blown from the steam generator 18 into the pretreatment tank 17, and the grinding plate 11 is steamed under the same conditions as in (3) (step S5).
(6) After the steaming process, the vacuum process is performed again so that the antiseptic / anticide is sufficiently diffused into the duct structure of the hard saw board 11A (step S6). As mentioned above, step S3-6 becomes a pre-processing process.
(7) The hard grinding board 11A is pulled out from the pretreatment tank 17 to the outside, and the soft grinding board 11B subjected to insizing processing omits steps S3 to 6, and the preliminary drying chamber 20 together with the hard grinding board 11A. And dried at room temperature (step S7).
[0016]
(8) The dried saw board 11 (the hard saw board 11A and the soft saw board 11B) is preliminarily cut by the rotary cutter 21 of the first planar 22 and is smoothed by cutting the front and back surfaces by about 1 mm, for example. (Step S8).
(9) The pre-cut grinding plate 11 is loaded into the pressure tank 24 of the chemical liquid impregnation device 23, and the antiseptic / anticide is supplied from the storage tank 25 to the pressure tank 24 by the pressure pump 26. The pressure is increased to about 14 to 18 atmospheres, the antiseptic / anticidal agent is injected into the ground plate 11, and the antiseptic / anticidal agent treatment (impregnation treatment) is performed (step S9).
As a result, the hard grinding board 11A is impregnated with antiseptic / anticidal agent to a depth of about 10 mm on the front and back surfaces and both side surfaces, and the soft grinding board 11B is impregnated with antiseptic / anticidal agent up to the vicinity of the center.
(10) The saw board 11 treated with the antiseptic / anticidal agent is drawn out from the pressure tank 24 and is subjected to curing treatment at room temperature for about 7 to 10 days (step S10).
(11) The ground plate 11 subjected to the curing treatment is heated by the artificial drying device 27 and dried (artificial drying treatment) to a moisture content of about 10 to 13%, for example (step S11).
[0017]
(12) The dried ground plate 11 is smoothed by cutting the front and back surfaces thereof by about 0.5 to 1 mm by the planar processing by the second planar plate 29 (step S12).
(13) The ground board 11 with smooth front and back surfaces is divided into a group of hard grinding boards 11A and a group of soft grinding boards 11B, using the hard grinding boards 11A for the uppermost layer and the lowermost layer, and 2 for the intermediate layer. Using the soft grinding board 11B of a sheet | seat, for example, a phenol-type adhesive agent is apply | coated and laminated | stacked on the surface which mutually contacts on the lamination work table 30 (step S13).
At this time, if the soft saw board 11B has a warp, the warp directions are stacked back to back so that the warp can be offset from each other.
(14) The grinding board 11 (the hard grinding board 11A and the soft grinding board 11B) laminated via the adhesive is pressed by the joining press 32 to perform the joining process (step S14).
As a result, as shown in FIG. 3, the size is reduced from the state in which four or more sawing plates 11 are stacked, the size is reduced by about 5 to 10 mm in the compression direction, and the adjacent sawing plates 11 are bonded and assembled. A material 31 is formed. Then, the adhesive is cured by maintaining the pressurized state for 1 to 2 hours.
[0018]
(15) The laminated material 31 with the cured adhesive is subjected to curing treatment in the curing room 33 for 7 to 10 days to stabilize the adhesive strength (step S15).
(16) The laminated material 31 is planarly processed on the front and back surfaces and the left and right side surfaces by the rotary cutter 34 of the third planar 35 35, and the base material 36 (120 × 120 mm or 105 × 105 mm in cross section) An example of a building material is formed (step S16).
(17) Further, the finishing device 37 finishes as necessary to form a glossy bark on the surface of the base material 36 (step S17).
As a result, the base material 36 that satisfies the storage processing standard in which the antiseptic / anticidal agent is sufficiently injected also in the vicinity of the central portion is obtained.
[0019]
The processing equipment 40 used in the method for manufacturing a building material according to the second embodiment of the present invention is processed from the processing equipment 10 used in the method for manufacturing a building material according to the first embodiment shown in FIG. In the vicinity of the third planar 35, a resin impregnating device 41 having substantially the same configuration as the chemical liquid impregnating device 23 and a fourth planar 42 having substantially the same configuration as the third planar 35 are added. Prepared. In addition, about the same component as the said processing equipment 10, the same name and the same code | symbol are attached | subjected and description is abbreviate | omitted.
That is, as shown in FIG. 4, the resin impregnation apparatus 41 includes a pressure tank 43, and phenol, which is an example of a reinforcing resin stored in a resin tank 46 provided below the pressure tank 43 by a pressure pump 45. Resin is injected into the pressure tank 43 and the inside of the pressure tank 43 can be pressurized to about 18 atmospheres. A heater 47 is provided in the pressure tank 43 to increase the temperature of the phenol resin. In addition, you may make it harden by raising to the hardening temperature of a phenol resin in the heating chamber provided separately. The fourth planar 42 is provided with a rotary cutter 49 that smoothly finishes the four surfaces of the soft laminated material 48 on the front and back surfaces and both side surfaces. A finishing device 50 capable of sanding is provided in the vicinity of the fourth planar 42 so as to form a glossy bark on the surfaces of the pillars and girders.
[0020]
Here, the manufacturing method of the building material which concerns on the 2nd Embodiment of this invention is demonstrated in order of a process with reference to FIG. 4, FIG.
(1) First, as the ground plate 11, the shear strength is 55-60 kg / cm.² A plurality of soft saw boards 11B are prepared by processing cedar of a soft material with a width of 110 to 135 mm, a thickness of 25 to 35 mm, and a length of 4 m (step S1). In addition, as a soft material, it is also possible to use timber made of a material such as Tsuga or white wood in addition to cedar.
(2) The surface of each soft saw board 11B is insized by the insizing device 12, and the front and back surfaces and both side surfaces are provided with ridges 15 having a width of 1 to 3 mm, a length of 10 mm, and a depth of about 10 mm. The entry of the agent is facilitated (step S2).
[0021]
(3) The soft saw board 11B subjected to the insizing process is inserted into the preliminary drying chamber 20 and dried at room temperature (step S3).
(4) The dried soft grinding board 11B is preliminarily cut by the rotary cutter 21 of the first planar 22, and the front and back surfaces are each cut, for example, by about 1 mm to be smooth (step S4).
(5) The pre-cut soft grinding board 11B is charged into the pressure tank 24 of the chemical liquid impregnation apparatus 23, and the antiseptic / anticide is supplied from the storage tank 25 to the pressure tank 24 by the pressure pump 26. The pressure is increased to about 14 to 18 atm, and an antiseptic / anticidal agent is injected and impregnated into the soft grinding board 11B (step S5).
(6) After injecting antiseptic / anticide to the soft grinding board 11B, the soft grinding board 11B is pulled out from the pressure-resistant tank 24, and 7 to 10It is cured at room temperature for a day (step S6).
[0022]
(7) The soft grinding board 11B subjected to the curing treatment is heated to about 110 to 130 ° C. by, for example, high-frequency heating by the artificial drying device 27 and dried to a moisture content of about 10 to 13% (step S7). Note that high pressure steam, superheated steam, or hot air of about 110 to 130 ° C. may be blown as a heating source.
(8) The dried soft grinding board 11B performs the planar processing which cuts the front and back surfaces by about 0.5 to 1 mm by the second planar plate 29, and smoothes the front and back faces of the soft grinding board 11B (step S8).
(9) The soft grinding board 11B whose front and back surfaces are smoothed is laminated by applying, for example, a phenol-based adhesive to the surfaces in contact with each other (step S9).
(10) The soft grinding board 11B laminated | stacked through the adhesive agent is pressurized with the joining press 32, and a joining process is performed (step S10).
Thereby, the soft grinding boards 11B adjacent to each other are bonded to form a soft laminated material 48, which is an example of a laminated material, and the adhesive is cured by maintaining the pressurized state for 3 to 5 hours.
[0023]
(11) The soft laminated material 48 with the cured adhesive is subjected to curing treatment in the curing room 33 for 7 to 10 days to stabilize the adhesive strength (step S11).
(12) The soft laminated material 48 is the third planar35The front and back surfaces are planarized by the rotary cutter 34 (step S12).
(13) The planar soft assembly 48 is placed in the pressure tank 43 of the resin impregnation device 41, and the pressure pump 45 fills the pressure tank 43 with phenol resin from the resin tank 46 as a reinforcing resin. The heat treatment is performed at about 120 to 150 ° C. by the vessel 47 and the pressure of the phenol resin is raised to about 18 atm by the pressure pump 45 to compress the soft laminated material 48 and maintained for 40 to 60 minutes to impregnate the resin. Processing is performed (step S13).
Thereby, the phenol resin is impregnated from the surface of the soft laminated material 48 to a depth of about 10 mm, and the resin is cured. Note that the phenol resin impregnated in the soft laminated material 48 may be cured by raising the temperature to the curing temperature of the phenol resin in a separately provided heating tank (or heating device) or the like.
[0024]
(14) After the phenol resin is cured, the soft laminated material 48 is taken out from the pressure tank 43 (including a heating tank and the like), the temperature is lowered to room temperature, and curing treatment is performed in the curing chamber 48A for 7 to 10 days (step S14).
Thereby, the surface part of the soft laminated material 48 becomes the same shear strength as the laminated material which hardened the impregnated phenol resin and used the hard material.
(15) After curing, when the phenol resin is completely cured, a resin that is kept at about 120 to 150 ° C. for several hours by inserting the soft laminated material 48 in a heating chamber or a heating chamber provided with a heating device. A curing process is performed (step S15).
(16) After the resin curing process, a curing process is performed to stabilize the phenol resin (step S16).
(17) The soft laminated material 48 is finished by rotating the rotary cutter 49 of the fourth planar 42 to form a base material 51 (an example of a building material), and the base material 51 is formed by the finishing device 50 as necessary. A glossy bark is formed on the surface (step S17).
As a result, the base material 51 is sufficiently injected with phenolic resin along with the antiseptic / anticidal agent in the vicinity of the center, and the compressive strength is 30 kg / cm.² Thus, the base material 51 that sufficiently satisfies the storage processing standard is obtained.
[0025]
As mentioned above, although the manufacturing method of the construction material which concerns on embodiment of this invention has been demonstrated, this invention is not limited to the structure as described in the said embodiment at all, and is described in the claim. Other embodiments and modifications conceivable within the scope of the present invention are also included.
For example, in the first embodiment, a hardwood is used for the uppermost layer and the lowermost ground plate, and after processing with an antiseptic / anticidal agent, a bonding process is performed without impregnating the reinforcing resin, thereby producing a laminated material. However, after the treatment with the antiseptic / anticidal agent, the laminated board may be formed by using a grinding board impregnated with a reinforcing resin to increase the strength.
Moreover, in the said 1st Embodiment, although the steaming process and the vacuum process were demonstrated twice, when the board | plate thickness of a grinding board is thin and it is easy to impregnate antiseptic | preservatives, a steaming process and The vacuum treatment may be performed only once, and when impregnation is difficult, the steaming treatment and the vacuum treatment may be repeated three times or more.
Furthermore, after performing the steaming process and the vacuum process, for example, hot air of about 100 to 130 ° C. may be blown to the pretreatment tank, and a high temperature drying process may be performed to facilitate impregnation of the antiseptic / anticidal agent.
[0026]
In the first embodiment, an example has been described in which two soft grinding boards such as cedar are inserted in the intermediate layer, but three or more soft grinding boards may be inserted.
In addition, the hardwood boards used for the uppermost and lowermost layers are pre-treated with antiseptic and antifungal agents, and a soft material is inserted into the intermediate layer between the uppermost and lowermost layers to form a laminated material. After that, a base material having a strong compressive strength may be formed by impregnating, for example, a phenolic reinforcing resin having antiseptic / anticidal effects.
In addition, although the said embodiment demonstrated the case where a base material was manufactured by impregnating antiseptic | preservative / anticide and a phenol resin, it cannot be overemphasized that it is applicable also when manufacturing building materials, such as a pillar material.
[0027]
【The invention's effect】
Claim 1And 2In the manufacturing method of building materials described, the sawing board used for the uppermost layer and the lowermost layer is hard.Saw board2 or 3 or more soft layers in the middle layerSaw boardUseHardSaw boardAnd soft saw boardSince the antiseptic / anticidal agent treatment is performed in advance after the insizing treatment and before the joining treatment, in the state where each of the ground layers of the uppermost layer, the intermediate layer and the lowermost layer are laminated and joined, A portion sufficiently impregnated with the chemical solution also exists in the vicinity, so that a construction material having a high compressive strength, in particular, a high-quality foundation material can be obtained while satisfying the standard of the preservation treatment.
[0028]
Hard grinding boardThe antiseptic / anticidal agent treatment is performed after the pretreatment step of performing the steaming process and the decompression process to disperse the resin on the sawing board and release the torus, so that the preserving / anticide agent penetrates into the sawing board. The inside of the structure becomes a vacuum state, and it becomes easy to impregnate the wood structure with an antiseptic / anticide.
After preservative / anticide treatment, perform artificial drying and planarizationHaveTherefore, the thickness dimension for each grinding board can be accurately determined by the planar processing, and the dimensional error can be reduced.
[0029]
Claim2In the building material manufacturing method described, the uppermost layer and the lowermost layerHardSince the grind board is treated with antiseptic / anticidal agents and then impregnated with a reinforcing resin and hardened, it is a grind board made of soft material such as cedar, tsuga, baitsuga, and whitewood. Even with the use of reinforcing resinHard grinding boardAs the strength increases and deterioration due to decay and ant damage is prevented, high-quality building materials, particularly high-quality foundation materials can be obtained.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of processing equipment used in a method for manufacturing a building material according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing the steps of the manufacturing method.
FIG. 3 is a perspective view of a laminated material manufactured by the manufacturing method.
FIG. 4 is a configuration diagram of processing equipment used in a method for manufacturing a building material according to a second embodiment.
FIG. 5 is a flowchart showing the steps of the manufacturing method.
[Explanation of symbols]
10: processing equipment, 11: grinding board, 11A: hard grinding board, 11B: soft grinding board, 12: insizing device, 13: rotating drum, 14: insizing blade, 15: hammer, 16: pretreatment device, 17 : Pretreatment tank, 18: Steam generator, 19: Vacuum pump, 20: Predrying chamber, 20A: Air conditioner, 21: Rotary cutter, 22: First planar, 23: Chemical liquid impregnation device, 24: Pressure tank, 25: Reservoir, 26: Pressurizing pump, 27: Artificial drying device, 28: Rotary cutter, 29: Second planar, 30: Laminate work table, 31: Glulam, 32: Press for bonding, 33: Curing room , 34: rotary cutter, 35: third planar, 36: base material, 37: finishing device, 40: processing equipment, 41: resin impregnation device, 42: fourth planar, 43: pressure tank, 45: pressurization Pong , 46: resin tank, 47: heater, 48: soft laminated wood, 48A: curing chamber, 49: rotary cutter, 50: finishing device, 51: base timber

Claims (2)

This hard grinding board used for the uppermost layer and the lowermost layer is subjected to an insizing treatment, followed by a steaming treatment and a decompression treatment to perform a pretreatment process for spreading the resin of the hard grinding board and releasing the torus. After the grinding board is dried, it is treated with an antiseptic and ant repellant, and is further subjected to an artificial drying process to perform planar processing.
2 or 3 or more soft grinding boards are used for the intermediate layer arranged between the uppermost layer and the lowermost layer, and the soft grinding boards are subjected to insizing treatment and then dried to prevent preserving and prevention. Perform ant treatment, perform artificial drying treatment, and perform planar processing,
A method of manufacturing a building material for joining a hard saw board and a soft saw board subjected to each planar processing,
After the hard grinding board used for the uppermost layer and the lowermost layer is dried, and before the antiseptic / anticidal agent treatment, the surface of the hard grinding board is pre-cut, and the soft grinding board used for the intermediate layer. After pre-drying, before preserving antiseptic / anticide, pre-cutting the surface of the soft grinding board,
Moreover, after the hard grinding board used for the uppermost layer and the lowermost layer is treated with an antiseptic / anticidal agent, it is subjected to curing treatment at room temperature before artificial drying treatment, and a soft grinding board used for the intermediate layer is obtained. A method for producing a building material, characterized in that after a preservative / anticide treatment, and before an artificial drying treatment, a soft ground board is cured at room temperature . In the manufacturing method of the building material according to claim 1 , after carrying out antiseptic / anticide treatment to the hard grinding board used for the uppermost layer and the lowermost layer, it is impregnated with a reinforcing resin and cured. A method for manufacturing building materials.

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