JP2001287209A - Bamboo zephyr board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bamboo zephyr board which is molded irrespective of use or not, of an adhesive by effectively utilizing a trunk of bamboo, leaves other than the trunk and branch parts. SOLUTION: Two kinds of synthetic resins are used for a zephyr 2 produced from a bamboo of a wide range from undryness to dryness. A special yarn 4 synthsized by a core yarn at a high melting point and a crust 6 coating the core yarn at a low melting point, is added by a specific amount and kneaded. When they are heated at a temperature wherein the crust is molten and pressurized on forming, the crust acts as a binder for linking the zephyr to the core yarn to obtain a bamboo zephyr board wherein the core yarn supplements the strength and pliability of the board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bamboo zephyr board in which bamboo made of continuous mesh fibers is kneaded as a main component and has a myriad of gaps formed therein.

[0002]

BACKGROUND OF THE INVENTION Although the importance of wood in building materials remains unchanged today, advances in building methods and the emergence of new materials are gradually reducing their importance. For example, there are many buildings mainly made of wood, but they are too labor-intensive and expensive and their size is limited, so replacement of prefabricated buildings with metalized main components and standardization for factory production is progressing. Timber used in buildings only paid for part of the building.

[0003] Wood processing technology with a long history is extremely abundant, and there are many materials produced from the technology. The form is divided into those that use the original shape and those that are not related to the shape, the former being glued or laminated materials that add the bonding technology to horns and plates by cutting technology, and the latter being crushing and cutting. Particle board and M,
There is a compressed material called a D or F board or a wood wool board integrated with concrete.

[0004] As described above, wood has been provided in various forms as building materials, but the poor reproducibility of wood has made it difficult to obtain and contributed to an increase in cost.
In search of low-cost building materials, bamboo materials, which had previously been limited in use despite good reproductivity, have been reviewed, and with the advancement of production technology, it has become possible to process round bamboo into flat plates. It has begun to be recognized as an alternative building material to some wood products.

[0005]

Although bamboo is superior in reproducibility to wood, many types of bamboo have a hollow cross-sectional shape, and their diameter and length are narrower and shorter than wood. It has the negative factor of being big. For this reason, even if a thick and long bamboo is suitable for a material for development, the rest except for the material portion and a large number of bamboos are not suitable for the material, and the application is still limited.

[0006] Usually, bamboo has excellent reproducibility with a condition as a material in three to five years, and features of hardness and a beautiful pattern drawn by fibers, but as described above, most are not used. Thrown away. Therefore, it is a problem that leads to effective use of resources by using the stem and leaves and branches other than the trunk as materials to make use of the inherent characteristics of bamboo to produce a product comparable to a wooden product.

[0007]

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned problems by effectively utilizing a bamboo trunk and leaves and branches other than the trunk, regardless of whether an adhesive is used or not. Provide molded bamboo zephyr board.

[0008] The present invention uses a Zephyr sampled from bamboo of a required length and in the range of undried or almost undried, and kneading the Zephyr, and the vascular bundle component, which is a bamboo-containing component, seeps onto the surface. Bamboo Zephyr board, characterized by having a required shape and a myriad of gaps inside, by applying pressure while heating at the temperature at which it comes out, making it serve as a binder for bonding Zephyr to the self-extracting component of bamboo The required length, using a Zefa collected from bamboo in the range from undried to dry, the required amount of synthetic resin fiber yarn to be melted at the desired heating temperature was added to the Zephyr and kneaded, and then melted. A bamboo zephyr board characterized by having the yarn function as a binder for bonding zephyrs to each other, forming the required shape by pressing, and having a myriad of gaps inside. Using a zeffer and chips collected from bamboo in the range of dryness, add a desired amount of powder adhesive that melts at the desired heating temperature or a liquid adhesive that solidifies, and knead the materials together. A bamboo zephyr board characterized in that it has a role as a binder, has an arbitrary required shape by pressurization, and has a myriad of gaps inside.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is to knead a single piece of Zephyr (continuous reticulated fiber) taken out of bamboo of a required length or to knead a mixture of Zephyr and chips in a desired ratio.
By randomly interspersing to the required size, applying pressure and heat, bonding with Zephyr's own contents or added synthetic resin fiber yarn or adhesive, forming into a board of the required thickness, and countless inside The present invention relates to a bamboo Zephyr board having a gap.

Zephyr is mainly made of bamboo trunks ranging from undried to dry, excluding knotlings and internodes. If a long bamboo is processed with a grooved roller, continuous reticulated fibers can be collected, but cutting is required. Therefore, short fibers are directly obtained by crushing and crushing short bamboo previously selected from the range of 10 to 100 mm, preferably 10 to 70 mm.
The Zephyr is stirred and mixed to interlace the fibers more randomly, and then heated indirectly with steam or hot air, or directly heated with high frequency or microwave, and then pressurized to obtain a required shape.

In the case of producing Zephyr from undried or almost undried bamboo, vascular glues such as hemicellulose and lignin contained by heating exude to the surface to serve as a binder, and the adhesive is used. It can be formed into a board without using it. By adjusting the amount of the Zephyr and the pressure, it is possible to easily manufacture a board corresponding to hardness and density ranging from a particle board in which wood chips are compressed or an M, D, F board to an uncompressed heat insulating material such as glass wool.

When Zephyr is produced from bamboo in a dry or nearly dry range, oozing of the contents by heating cannot be expected at all or sufficiently. Therefore, a synthetic resin melted at a desired heating temperature when kneading Zephyr is used. Select the fiber yarn, and the volume ratio is 5
When added in the range of 50%, preferably in the range of 5 to 20%, the yarn melted by heating acts as a binder, and the zephyrs can be fixed to each other by pressing to form a board. For example, polyethylene yarn can be used at a lower heating temperature.

A single-material yarn changes its shape by melting and can only play the role of a binder. However, at least two types of synthetic resins are used, and a high melting point is applied to the core yarn and the outer shell that covers the core yarn has a low melting point. When the heating operation is performed at a temperature at which the outer skin melts using the special yarn, the outer skin acts as a binder connecting the Zephyr and the core yarn, and the core yarn supplements the strength and flexibility of the board. It has an ineffective effect.
For example, in a special yarn in which the core yarn is polypropylene and the outer skin is polyethylene, polyethylene melts.

In order to form the desired shape after kneading the Zephyr, a set mold is used. If the required pattern is formed by protruding on the surface of the mold, the pattern can be transferred to the surface at the same time as the board is formed by the operation of heating and pressing, so it is easy to manufacture a board with many dents or through holes on the surface it can. Such patterns need only be considered in terms of mold removal, and various patterns can be formed on the board surface. When Zephyr has a trunk as a main component, the color of the molding surface is white, so that the surface is colored with a paint as necessary.

The board material may be a combination of crushed wood chips on zephyr or a combination of crushed bamboo leaves and branch chips, both of which have a volume ratio of 10 to 50% relative to zephyr.
, Preferably from 10 to 30%. To the binder, a synthetic fiber yarn corresponding to the volume ratio described above is added to the mixture, and the mixture is heated and melted, or the volume ratio is 1 to 20%.
A powder or liquid adhesive selected from the range of, preferably, 10 to 15% is added and heated to melt the powder or solidify the liquid to form a decorative material in which leaves and branches are dispersed on the molding surface. Is obtained. At that time, the color of the leaves changes depending on the heating temperature, and for example, the shade of brown can be freely provided. Also,
Addition of bamboo charcoal powder to chips whose leaves and branches have been crushed can impart a function of absorbing humidity and odor.

When an adhesive is used, a styrene-based, ester-based or polyimide-based powder may be used, and a urethane-based liquid may be used. In addition, at the stage before finishing into a Zephyr board, a water retention powder is selected from a range of 0.5 to 10% by volume ratio separately from the binder and kneaded, and the water retention function is provided after molding, and a water retention material at the time of plant cultivation. Can be used as It is preferable to use an anionic water retention powder.

In order to improve the function and appearance of the Zephyr board, diatomaceous earth is applied to the surface of the molded Zephyr board to improve the adsorption and desorption of humidity and the heat retention. It works to control. Applying the fine powder obtained by crushing the shell to the surface of the Zephyr board with an adhesive or the like has effects such as improvement in appearance and the like.

Zephyr board containing bamboo trunk as a whole component or Zephyr board to which other components are added has excellent functions such as elasticity, heat insulation, sound absorption and cushioning, and also has a unique appearance of bamboo. Useful. In addition, waste disposal after use has features not found in other building materials, such as being recyclable by crushing and being less likely to cause pollution when incinerated.

[0019]

The board according to the present invention, in which bamboo fibers are mixed to reduce the weight and have an infinite number of gaps inside, can be characterized by elasticity, heat insulation, sound absorption and cushioning functions according to the amount of Zephyr and the degree of processing. it can.

[0020]

Embodiment 1 FIGS. 1A and 1B show enlarged cross-sections of a side surface and a part of a board made of Zephyr. In the step of obtaining Zephyr 2 in FIG. 2B, the bamboo as a raw material is lengthened, rolled on a roller and rolled to form a Zephyr, and then a suitable length is obtained.
It is sliced into shorter lengths, the circumference is divided into small pieces, and the pieces are crushed into a reticular fiber. The thickness and length of the fibers after being made into zephyr are easy to make uniform in the former, but difficult to make uniform in the latter. However, there is an advantage that kneading is difficult even if the fiber is too long, and the cost is not increased in terms of equipment.

This bamboo zephyr board 1 uses zephyr 2 obtained from bamboo in an undried or nearly undried range, self-adhesive with the contents secreted by heating during molding with a mold, and separately using an adhesive. It is characterized by not being necessary, and the specification of different hardness and density can be obtained even with boards of the same size by adding and adjusting the amount of Zephyr 2 and the pressure, and the result of including innumerable gaps 3 by interlacing fibers, It is possible to obtain a board having functions such as heat insulation, sound absorption, and buffering, and having different functions depending on the main use.

[0022]

[Example 2] When kneading bamboo zephyr with polyethylene yarn in an amount of 15% by volume ratio and kneading, the polyethylene melts and acts as a binder connecting the zephyrs, and pressure is applied without additional adhesive. Can be made into bamboo zephyr board. Polyethylene melts at a low temperature and is easy to use, but since the yarn is deformed by heating, it cannot be expected to supplement the strength and flexibility of the board. The function obtained from this embodiment is the same as that of the first embodiment (see FIG. 1).

[0023]

Embodiment 3 FIGS. 2A and 2B show one example of a Zephyr board in which Zephyr 2 and a special yarn 4 with an outer cover 6 in which a polypropylene core yarn 5 is coated with polyethylene are added at a volume ratio of 15%. It is a model of a section with an enlarged section and an enlargement of a special thread. When this board is manufactured in a mold or the like, if it is operated at a temperature at which only the outer skin melts, the melted outer skin forms a joint 7 serving as a binder between the Zephyr and the core yarn, and the core yarn has the strength and flexibility of the board. The effect of supplementing sex is obtained.

This configuration uses Zephyr 2 produced from a wide range of bamboos ranging from undried to dried, and does not require an additional adhesive. Therefore, it is not necessary to solidify with an adhesive like a particle board with chips, and it is possible to obtain specifications that differ in hardness and density even with the same size by adjusting the amount of Zephyr and pressure, including innumerable gaps by interlacing of fibers, The resulting function is the same as in the first and second embodiments.

[0025]

Embodiment 4 FIG. 3 shows a mold 9 and 10 used in the stage of manufacturing the Zephyr board of Embodiments 1 and 2 which have penetrating projections extending from one mold to the other. Of the bamboo Zephyr board 8 with through holes by heating and pressing. Instead of this hole, a short projection may be provided on both sides or one side to form a board with a recess. The shape of this projection can be freely selected except for considering the draft angle of the mold, and it is possible to obtain various specifications of different hardness and density even with the same size by adjusting the amount and pressure of Zephyr 2. The function is the same as in the other embodiments.

[0026]

Example 5 A chip obtained by crushing leaves and branches was mixed with Zephyr 2 at a volume ratio of 10%, a powder adhesive was added as a binder, and after kneading, the mixture was heated and pressurized.
A board having the same shape as the bamboo Zephyr board 1 of (A) or the bamboo Zephyr board 8 with through holes of FIG. 3 can be formed. Leaves and branches are scattered on the board surface to draw a pattern (not shown), and the leaves can be colored at a heating temperature, so that they are suitable as a decorative material.

[0027]

Embodiment 6 FIG. 4 shows a bamboo Zephyr board 11 coated with diatomaceous earth. The board itself is not limited to components or adhesives. In this embodiment, there is a case where a joint treatment is required after attaching the diatomaceous earth 12 in advance to a required position with a Zephyr board. Compared to this method, after fixing the Zephyr board before application in a required position, diatomaceous earth may be applied like the wall application of an old wooden house. This method has an advantage that the connection surface is finished without any post-processing.

[0028]

The bamboo zephyr board according to the present invention has the following effects. Zephyr, obtained from undried bamboo, has its own material act as a binder, eliminating the need for a separate adhesive. In zephyr obtained from bamboo ranging from undried to dried, the yarn of the added synthetic resin fiber acts as a binder, eliminating the need for a separate adhesive. The special yarn of two kinds of synthetic resin was used to supplement the strength and flexibility of the board. The addition of chips with crushed leaves and branches allows the molding surface to be patterned with the leaves and branches, making it possible to color the leaves at the heating temperature, thus creating a use as a cosmetic material. The hardness and density were changed by adjusting the amount of heat and pressure, and the various boards with various properties such as elasticity, heat retention, sound absorption and cushioning were obtained. The use of bamboo leaves and branches also contributed to the effective use of bamboo. With its water-absorbing function, it has expanded its applications beyond the construction field. Recycling or disposal after use has become easier.

[Brief description of the drawings]

FIG. 1 is a side view of a bamboo Zephyr board of Example 1 (A).
(B) shows an enlargement of the modeled partial plane.

FIG. 2 (A) shows the state of adhesion between the special yarn and Zephyr using the synthetic resin of Example 3, and FIG. 2 (B) shows a partial enlargement of the special yarn.

FIG. 3 shows a processed state of a bamboo Zephyr board with through holes of Example 4.

FIG. 4 shows a bamboo zephyr board coated with diatomaceous earth of Example 6.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bamboo zephyr board 2 zephyr 3 gap 4 special thread 5 core thread 6 outer skin 7 node 8 bamboo zephyr board with through hole 9,10 mold 11 bamboo zephyr board coated with diatomaceous earth 12 diatomaceous earth

Claims (9)

[Claims] 1. Use of Zefar (2) collected from a bamboo of a required length and in a range of undried or almost undried, and kneading the Zephyr, so that the vascular bundle component, which is a component of the bamboo, is on the surface. It is characterized by having a required shape and a myriad of gaps (3) inside, by applying pressure while heating at the temperature at which it oozes out, allowing the self-extracting component of bamboo to serve as a binder for bonding zephyrs together. Bamboo zephyr board. 2. Using a Zefa (2) which has a required length and is collected from a bamboo in a range from undried to dry, adding a required amount of synthetic resin fiber yarn which melts at a desired heating temperature to the Zephyr. A bamboo zephyr board characterized by having a kneaded and melted yarn function as a binder for bonding zephyrs to each other, having a required shape under pressure, and having a myriad of gaps (3) therein. 3. A synthetic resin fiber yarn which is melted at a desired heating temperature, the core yarn (5) is made of a synthetic resin having a high melting point, and the outer skin (6) covering the periphery of the core yarn is made of a synthetic resin having a low melting point. The special yarn (4) is heated to the temperature at which the outer skin melts, and the molten outer skin plays a role as a binder for bonding zephyrs together, and the core yarn as an auxiliary material of strength and flexibility, respectively. The bamboo zephyr board according to claim 2, characterized in that: 4. A powder adhesive which solidifies at a desired heating temperature or a liquid adhesive which solidifies at a desired heating temperature by using as a raw material zeffers and chips collected from a bamboo having a required length and in a range from wet to dry. A bamboo zephyr board characterized by adding a desired amount of kneading and kneading to serve as a binder for bonding the materials together, forming a desired shape by pressing, and having an infinite number of gaps inside. 5. The bamboo zephyr board according to claim 4, wherein the chips are composed of crushed leaves and branches, and the molding surface is patterned with the chips. 6. The bamboo zephyr board according to claim 1, wherein a water-retaining powder is added and kneaded. 7. The bamboo Zephyr board according to claim 1, wherein a number of recesses or through holes are formed on the front and back. 8. The bamboo zephyr board according to claim 1, wherein diatomaceous earth is applied to the board surface. 9. The bamboo zephyr board according to claim 1, wherein shell powder is applied to the board surface.