JPH0526307U - Fiberboard - Google Patents

Abstract

(57) [Abstract] [Purpose] A fiberboard that exhibits desired functions such as insecticidal, sterilizing, and aroma, and that can be suitably used as a building material or furniture material in a house having a high degree of airtightness. provide. [Structure] A phytoncide-containing fiber layer is formed on at least the front surface / back surface of a fiber board. The phytoncide-containing fiber layer is formed by using a treated wood fiber obtained by coating and impregnating the surface of a wood fiber with phytoncide, or by bonding and integrating the wood fiber with an adhesive in which phytoncide is added and mixed. The phytoncide is gradually diffused from the phytoncide-containing fiber layer into the atmosphere, and the desired function is continuously exhibited for a long period of time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wood fiber board obtained by pressing and adhering wood fibers obtained by defibrating wood with an adhesive, and particularly to a wood fiber board exhibiting the effects of aroma, insect repellent, and fungus protection. To do.

[0002]

[Prior Art]

 A wood fiber board obtained by pressing and adhering wood fibers obtained by defibrating wood with an adhesive is well known and is widely used as a building material and a furniture material in houses.

[0003]

[Problems to be solved by the device]

 In recent years, due to advances in construction methods and building materials, the airtightness of houses has improved. This improvement in airtightness is beneficial from the viewpoint of soundproofing and energy saving, but as a result of air retention in the room and increase in temperature and humidity, problems such as the generation of living odors, the occurrence of dew condensation, and the propagation of various bacteria are caused. It has become apparent. Air retention and temperature / humidity increase due to the high degree of airtightness are particularly noticeable in kitchens, washrooms, baths, etc. around waterways, closets, doors, underfloors, or above-ceiling storage areas, such as molds, mites, and bacteria. It becomes a hotbed suitable for the generation and breeding of cockroaches, etc., which poses a serious environmental and health problem.

No consideration has been given to such a problem in the wood fiberboard that has been conventionally generally used.

[0005]

[Means for Solving the Problems]

 Therefore, the present invention solves the above-mentioned drawbacks of the prior art, and provides a wood fiberboard capable of exerting the effects of aroma, insect repellent, and fungus protection, which is used in a house with a high degree of airtightness as a building material or furniture. The purpose is to enable suitable use as a material.

In order to achieve this object, the wood fiberboard according to the present invention is a wood fiberboard obtained by crushing wood and pressing and bonding wood fibers through an adhesive. And / or a phytoncide-containing fiber layer is formed on the back surface.

The wood fiberboard according to the present invention is obtained as follows. First, cedar, cypress, hiba, pine, birch, maki, cat, camphor, kunugi, ginkgo, camellia, spruce, rawan, capoule, chestnut, poplar, willow, agatis, zelkova, oak, sen, teak, oak, etc. The softwood or hardwood wood chips of (3) are steamed under high temperature and high pressure steam to be further degreased and softened, and then defibrated using a defibration device to obtain wood fibers. The wood fiber used may be a single tree species or an arbitrary mixture of multiple tree species. In some cases, other plant fibers such as sugar cane, corn stalk, palm shell, and bamboo can be used in place of the wood fiber.

The obtained wood fiber is adjusted to have an appropriate water content by drying, then sent to a mixing device, and an adhesive is applied to the surface thereof. Examples of the adhesive include urea resin, phenol resin, melamine resin, epoxy resin, vinyl acetate resin, ethylene-vinyl acetate resin, urethane resin, acrylic resin, synthetic resin adhesives such as modified resins thereof, and isocyanate type adhesives. Any thermosetting or thermoplastic adhesive such as adhesive, rubber or synthetic rubber adhesive is used.

Next, the wood fiber coated with the adhesive is conveyed by air to form a wood fiber mat having a constant thickness, which is further cut into a predetermined size and integrated by compression molding. You can get a plate.

In the present invention, the phytoncide-containing fiber layer is formed on at least the front surface and / or the back surface of the fiber board thus obtained. Phytoncide is an essential oil obtained by refining natural trees (stems, branches, leaves, roots, bark, resins, etc.) by distillation, squeezing, solvent extraction, and the like. Specifically, α-pinene, β- Monoterpenes such as pinene, dipenterene, limonene and terpinolene, sesquiterene pens such as kazinene and longifolene, and terpenes such as diterpenes such as camphorene and miren = (C ₅ H ₈ ) n Is called turpentine.

Phytoncide is used as it is in an essential oil state (may be diluted with a solvent), as an emulsion type, or in a microcapsule type in which essential oil is encapsulated in water, synthetic resin or the like. Be done. Phytoncide, which is used in the essential oil state, is fast-acting and has a large short-term effect because it diffuses into the atmosphere relatively quickly, while it is slow-acting and persistent when used as an emulsion type or microcapsule type. And long-term effect can be expected. Further, in the case of the emulsion type or the microcapsule type, the emission amount of phytoncide can be appropriately controlled by changing the thickness of the substance constituting the emulsion shell or the microcapsule shell or the shell / shell.

[0012] The phytoncide tree species may be any tree such as cedar, cypress, hiba, pine, birch, maki, cat, camphor, kunugi, ginkgo, camellia, and tgasawara, and may be obtained from other plants in some cases. It is also possible to use the phytoncide that is used. Phytoncide has many functions such as bactericidal, acaricidal, insecticidal, bactericidal, antimicrobial, antibacterial, pharmacological, deodorant, aroma, sedative, etc., although it varies slightly depending on the tree species. For example, sugi phytoncide has particularly excellent bactericidal, acaricidal, and deodorant functions, hiba phytoncide has excellent antimicrobial and bactericidal functions, hinoki phytoncide has particularly excellent antibacterial and deodorizing functions, and Togasawara phytoncide has especially insecticidal, It has excellent bactericidal and insecticidal functions, and birch phytoncide is particularly excellent in antibacterial and insecticidal functions. Phytoncide exerts a forest bathing effect on the human body, and has excellent environmental hygiene and health effects.

In order to form the phytoncide-containing fiber layer on the front and back layers of the fiberboard, for example, phytoncide is added at the time of defibrating the wood chips, and treated wood fibers whose surface is impregnated with phytoncide are treated. A wood fiber mat is formed using the front and back layers, cut to size, and integrated with a pressing device to form a fiber board. Alternatively, a fiber board having the same structure can be obtained by bonding the wood fibers to the front and back layers of the wood fiber mat using an adhesive to which phytoncide is added and mixed. Needless to say, phytoncide may be contained not only in the front and back layers but also in the whole fiber board.

In the present invention, the phytoncide, which is coated and impregnated on the surface of the wood fiber or mixed with the adhesive, may be one or more kinds obtained from the same wood seed material as the wood fiber to be used. It may be one or a plurality of species obtained from different tree species, and further, a mixture obtained from the same species and different species may be used in combination. For example, wood fiber of Togasawara is coated with and impregnated with phytoncide obtained from Togasawara, or an adhesive mixed with phytoncide obtained from Togasawara is applied and molded and integrated as described above to form a fiberboard. can do. In this fiberboard, the phytoncide of Togasawara is gradually released over a long period of time, and exhibits insecticidal, bactericidal and insecticidal functions.

Further, for example, it is possible to use a wood fiber of a lauan wood and a microcapsule in which a phytoncide obtained from a different tree species, for example, Hiba is encapsulated as described above to form a fiber board. In this fiber board, although the wood fiber of the tree species that is relatively inexpensive can be used, the fragrance of the phytoncide of the higher tree species such as Hiba can be obtained, so that the fiber board of the higher tree species can be simulated.

Further, by mixing phytoncides of a plurality of tree species and adding them to an adhesive for use, it is possible to obtain a fiber board having the function of each phytoncide. For example, when Hiba phytoncide and Sugi phytoncide are mixed and used, the antibacterial and insecticidal functions of Hiba phytoncide and the sterilization, acaricidal and deodorant functions of Sugi phytoncide are exhibited. In this way, a fiberboard having a desired function can be obtained by using phytoncides of a plurality of tree species in any combination.

[0017]

【Example】

 FIG. 1 shows a fiberboard 1 molded from wood fibers of Togasawara as one embodiment of the present invention, in which at least the surface layer 2 and the back surface layer 3 also contain phytoncides containing phytoncides obtained from Togasawara. It is a layer. Since the front surface layer 2 and the back surface layer 3 of this fiber board 1 are composed of wood fibers coated and impregnated with phytoncide, the function of the phytoncide of Togasawara was exhibited for a long period of time.

[0018]

[Effect of the device]

 Since the phytoncide-containing fiber layer is formed on at least the front surface layer / back surface layer of the fiberboard, the phytoncide is gradually diffused into the atmosphere, and its function is continuously exerted over a long period of time. In the fiberboard of the present invention, aroma from phytoncide of a desired tree species is obtained, so that a high-grade woody feeling can be expressed even when wood fiber made of a low-grade material is used. Furthermore, it is possible to exert the peculiar effects of the phytoncide used, such as sterilization, insecticide, and deodorization.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a fiberboard according to an embodiment of the present invention.

[Explanation of symbols]

 1 Fiberboard 2 Front layer 3 Back layer

Claims (1)

[Scope of utility model registration request] 1. A wood fiber board obtained by pressing and adhering wood fibers obtained by defibrating wood with an adhesive, wherein a phytoncide-containing fiber layer is formed on at least the front surface and / or the back surface thereof. Fiberboard characterized by.