JP2007085012A - Vegetation board and tatami floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase economic efficiency by reducing weight with proper elasticity and high strength without generating mold and a harmful insect while being manufacturable by using a waste material unrequired in the other manufacturing process by recycling for providing a similar product again by adding a new raw material by crushing an antiquated product in a Tatami floor. <P>SOLUTION: This Tatami floor 3 is formed by laminating a rush board 5 having the thickness of about 10 mm and a wood raw material board 6 having the thickness of about 45 mm. The rush board 5 is compressed until the thickness becomes about 10 mm by a hot press at the heating temperature of about 180 °C by mixing an adhesive mainly composed of a polyethylene glycol there at a rate of about 5 pts.wt. to 80 pts.wt. of these mixture by mixing at a rate of about 1 to 1 in the weight ratio of a material of reducing a bulk specific gravity by defibering fiber of the bark of a Japanese cedar by inserting the bark of the Japanese cedar 4 to 5 times between two rollers of arranging a recess-projection on a surface and a fragment of a rush cut off as an end material when manufacturing a Tatami facing 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vegetation board and a tatami floor that is light and economical, has excellent strength, has moderate elasticity, and does not place a burden on the environment.

  Traditionally, traditional tatami mats use natural rice straw bundled as a tatami floor (tatami core material). They are easy to absorb moisture and are prone to mold and heavy. In addition to the tendency to become a hotbed, in recent years, the mechanization of farm work has progressed, and rice straw has often been immediately put into the field, making it difficult to obtain it as a raw material for tatami floors.

  Therefore, in order to solve such problems of tatami floors using rice straw, tatami floors made of various materials have been used. For example, in Patent Document 1, a fiber raw material mainly composed of moon peach defibrated fiber, which is a plant native to the tropics and has an insect-repellent action, which is defibrated from stems and leaves, is used as an adhesive. An invention of a tatami floor using a hardened moon peach board is disclosed. The tatami floor using the moon peach board has an insect repellent function and is lightweight, and the stalks and leaves of the moon peach as a raw material are low in price.

Further, in Patent Document 2, two or more layers of hard and soft swarf mats, which are obtained by dipping swarf fibers in an adhesive and pressing to harden, are layered, and wooden elastic boards are stacked on both sides of the mat to fold vertically and horizontally. The invention of a tatami floor constructed by sewing with a thread is disclosed. These tatami floors are all environmentally friendly because they are made of natural materials, and the swarf fibers themselves are rich in elasticity, and the elasticity lasts for a long time. Yes.
JP 2004-316119 A JP 2005-155314 A

  However, in the tatami floors described in Patent Document 1 and Patent Document 2, even if it is environmentally friendly, no harmful substances are generated when it is burned when it is discarded, or even if it is not burned, it is naturally soiled. Only the point of returning is emphasized, and when it becomes old, it cannot be recycled that the same product can be obtained again by crushing the product and adding new raw materials. In addition, new materials are used as raw materials even at a low price, and there has been no idea of producing boards for tatami floors or tatami floors from waste materials that are no longer necessary in other manufacturing processes.

  Therefore, when the present invention becomes old, it is possible to recycle the same product again by crushing the product and adding new raw materials, and use waste materials that are no longer necessary in other manufacturing processes. It is an object of the present invention to provide a grassy board and a tatami floor that can be manufactured, have moderate elasticity, high strength, light weight, and economical without generating mold and pests.

  The vegetation board according to the invention of claim 1 is obtained by mixing a bark of a tree, a piece of grass, and an adhesive mainly composed of polyethylene glycol, and heat-molding with a hot press, or hot press. And is cut into a predetermined shape by heating and compression.

  Here, “herbaceous” refers to a plant that does not develop much wood and has a thin stem, and is a so-called “grass”.

  According to a second aspect of the present invention, there is provided the vegetation board according to the first aspect, wherein the herb piece is a piece of rush.

  According to a third aspect of the present invention, there is provided the plant board according to the first or second aspect, wherein the bark of the tree is loosened within a range of 45% to 49% by weight, and the herb piece is 45% by weight. The adhesive mainly composed of polyethylene glycol is contained in the range of 2 to 10% by weight within the range of% to 49% by weight.

  The tatami floor according to the invention of claim 4 is a tatami floor using the rush board which uses the rush piece of the rush as the cut piece of the grass among the vegetation boards according to claim 2 or claim 3 at least in a portion which hits the back side of the tatami surface. It is.

  According to a fifth aspect of the present invention, in the structure of any one of the second to fourth aspects, the bark of the tree is a cedar bark, and the piece of the rush is used for manufacturing a tatami mat. Is generated as waste material.

  A tatami floor according to a sixth aspect of the present invention is the tatami floor according to the fourth or fifth aspect, wherein a timber raw material board composed of nearly 100% by weight of a timber raw material and several weight% of an adhesive and the rush board is laminated. It will be.

  A tatami floor according to a seventh aspect of the present invention is the tatami floor according to the sixth aspect, wherein the wood raw material board is a board made of virgin pulp and corn starch glue taken from a cedar bark and a cedar end material.

  The vegetation board according to the invention of claim 1 is obtained by mixing a bark of a tree, a piece of grass, and an adhesive mainly composed of polyethylene glycol, and heat-molding with a hot press, or hot press. And is cut into a predetermined shape by heating and compression.

  Such a vegetation board is made by loosening the bark and making it cotton-like, so that the specific gravity is small, light and excellent in elasticity. Moreover, since the herb pieces are entangled throughout, the bending strength is high. Furthermore, since bark and a piece of herb are used as raw materials, it can be manufactured at low cost. And when it becomes old, the plant board is crushed, the new bark is sufficiently loosened by the volume reduction, and the flocculant and the herb pieces are added, and the adhesive is mixed. By hot forming or hot pressing with a hot press, the plant board can be remanufactured and used any number of times.

  Therefore, it can be widely applied to various building materials including tatami mat floors, and does not place a burden on the environment.

  In this way, when the product becomes old, it is possible to recycle the product by crushing the product and adding new raw materials, and it is possible to recycle and manufacture using waste materials that are no longer needed in other manufacturing processes. It can be made into a grass board with moderate elasticity, high strength, light weight and economy.

  In the vegetation board according to the invention of claim 2, a piece of grass is a piece of rush.

  Such vegetation board (rush board) is made of cotton that has been sufficiently loosened and has a small specific gravity and is light and has excellent elasticity. Moreover, since the rush is comprised in the whole, bending strength is also high and it is excellent also in antibacterial property (insect repellent). Furthermore, since the bark and the rush of rush are used as a raw material, it can manufacture at low cost. And when it becomes old, the rush board is crushed and the new bark is loosened enough to reduce the volume, and then the rush is added to the cotton-like pieces and the rush pieces are mixed, and the adhesive is mixed. The rush board can be remanufactured and used any number of times by hot forming or hot pressing with a hot press.

  Therefore, it can be widely applied to various building materials including tatami mat floors, and does not place a burden on the environment.

  In this way, when the product becomes old, it is possible to recycle the product by crushing the product and adding new raw materials, and it is possible to recycle and manufacture using waste materials that are no longer needed in other manufacturing processes. It is possible to produce a vegetation board that has moderate elasticity, high strength, light weight and is economical without generating mold and pests.

  According to a third aspect of the present invention, there is provided a vegetation board according to a third aspect of the present invention, wherein the bark of the tree is loosened within the range of 45% to 49% by weight, and the herb fragments are within the range of 45% to 49% by weight. The adhesive as a main component is contained in the range of 2 to 10% by weight.

  As a result of intensive experimental research on the conditions for producing a high-strength, elastic, lightweight and recyclable vegetation board, the present inventors have found that the bark of a tree has been loosened and a piece of herb is cut. It is effective to mix approximately the same weight and to reduce the amount of the adhesive mainly composed of polyethylene glycol as much as possible. Specifically, 45% to 49% by weight of the loosened bark of the tree and 45% of the herb pieces of grass. Based on this finding, it was found that by mixing 2% to 10% by weight of an adhesive mainly composed of polyethylene glycol with a proportion of 2% to 49% by weight, an excellent property can be produced. The present invention has been completed.

  In this way, when the product becomes old, it is possible to recycle the product by crushing the product and adding new raw materials, and it is possible to recycle and manufacture using waste materials that are no longer needed in other manufacturing processes. It can be made into a grass board with moderate elasticity, high strength, light weight and economy.

  The tatami floor according to the invention of claim 4 is a tatami floor using the rush board which uses the rush piece of the rush as the cut piece of the grass among the vegetation boards according to claim 2 or claim 3 at least in a portion which hits the back side of the tatami surface. It is. In other words, the rugged floor can be used as a tatami floor on the back of the tatami mat, and the tatami floor can be formed by laminating with a board made of other materials. good.

  By using the rush board at least on the back of the tatami surface, the rush is composed of entangled parts throughout, so the bending strength is high and the antibacterial and insect repellent properties are excellent. The loose floor is used, so the tatami floor has moderate elasticity. Furthermore, since rush boards use bark and rush pieces as raw materials, tatami floors can be produced at low cost.

  And when it becomes old, the rush board is crushed and the new bark is loosened enough to reduce the volume, and then the rush is added to the cotton-like pieces and the rush pieces are mixed, and the adhesive is mixed. The rush board can be re-manufactured and used as a tatami floor by hot forming or hot pressing with a hot press.

  In this way, when the product becomes old, it is possible to recycle the product by crushing the product and adding new raw materials, and it is possible to recycle and manufacture using waste materials that are no longer needed in other manufacturing processes. It can be a tatami floor with moderate elasticity, high strength, light weight, and economy without generating mold or pests.

  In the vegetation board or tatami floor according to the invention of claim 5, the bark of the tree is a cedar bark, and the rush of the rush is produced as a waste material when the tatami mat is manufactured. In this way, the vegetation board (rush board) uses the bark of cedar which is a waste material generated when cutting cedar wood from a cedar tree as a raw material, and a piece of rush which is generated as a waste material when manufacturing a tatami mat. Therefore, it can be manufactured at a very low cost and can contribute to the reduction of industrial waste.

  In this way, when the product becomes old, it is possible to recycle the product by crushing the product and adding new raw materials, and it is possible to recycle and manufacture using waste materials that are no longer needed in other manufacturing processes. It is possible to produce a grassy board and a tatami floor with moderate elasticity, high strength, light weight and economical without generation of mold and pests.

  The tatami floor according to the invention of claim 6 is formed by laminating a timber raw material board and an rush board composed of nearly 100% by weight of a timber raw material and several weight% of an adhesive. Therefore, when it becomes old, the wood raw material board consists of nearly 100% by weight of wood raw material, so it can be naturally returned to the soil at least without burning, and in some cases it can be crushed and if necessary New wood raw materials can be added to remanufacture wood raw material boards. The rush board can be crushed and re-manufactured by adding new raw materials as described above.

  In this way, when the product becomes old, it is possible to recycle the product by crushing the product and adding new raw materials, and it is possible to recycle and manufacture using waste materials that are no longer needed in other manufacturing processes. It can be a tatami floor with moderate elasticity, high strength, light weight, and economy without generating mold or pests.

  The tatami floor according to the invention of claim 7 is a board in which the wood raw material board is made of virgin pulp and corn starch paste taken from cedar bark and cedar edge material. These boards are manufactured by mixing almost the same amount of cedar bark and virgin pulp, so when they are old they cannot be crushed and remanufactured, but they are all made from natural materials and discarded. If you do, you can naturally return to the soil without burdening the environment. The rush board can be crushed and re-manufactured by adding new raw materials as described above.

  In this way, when the product becomes old, it is possible to recycle the product by crushing the product and adding new raw materials, and it is possible to recycle and manufacture using waste materials that are no longer needed in other manufacturing processes. It can be a tatami floor with moderate elasticity, high strength, light weight, and economy without generating mold or pests.

  Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1
First, a vegetation board and a tatami floor according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a longitudinal sectional view showing an internal configuration of a tatami mat formed using a tatami floor using an rush board as a vegetation board according to a first embodiment of the present invention.

  As shown in FIG. 1, the tatami floor 3 according to the first embodiment is formed by laminating an rush board 5 having a thickness of about 10 mm and a wood material board 6 having a thickness of about 45 mm.

  Among these, the rush board 5 has a tatami table with a cedar bark that has a bulk specific gravity reduced by loosening the fibers of the cedar bark by passing 4-5 times between two rollers provided with irregularities on the surface. 2 are mixed at a weight ratio of approximately 1: 1 with a piece of rush that is cut off as a milling material, and at a ratio of about 5 parts by weight with respect to 80 parts by weight of the mixture. An adhesive containing glycol as a main component and latex added thereto is mixed and compressed at a heating temperature of about 180 ° C. with a hot press until the thickness reaches about 10 mm.

  Therefore, the mixing ratio of the raw material of the rush board 5 is about 47% by weight of the cedar bark fibers, about 47% by weight of the rush piece, and about 6% of the adhesive mainly composed of polyethylene glycol. %. In addition, the length of the piece of rush is in the range of about 3 cm to about 10 cm.

  The rush board 5 manufactured in this way is light with a specific gravity of about 0.3 to about 0.4, and has a high bending strength due to the entanglement of about 3 cm to about 10 cm of rush. Also excellent in properties. In addition, it is excellent in elasticity because it is made by loosening cedar bark and making it cotton-like. In addition, as raw materials, we use cedar bark, which is scrap material when cutting cedar timber from cedar trees, and rush of rush cut off as mill material when making tatami mats, so at a very low cost It can be manufactured and contributes to reducing industrial waste.

  On the other hand, the wood material board 6 is a wood material board produced by adding 49% by weight of cedar bark and 49% by weight of virgin pulp taken from cedar mill ends and 2% by weight of corn starch paste, and has a specific gravity of about 0.23. It is very light and has excellent heat insulation, humidity control and antibacterial effects.

  The tatami mat 1 according to the first embodiment uses the tatami floor 3 composed of the rush board 5 and the wood raw material board 6 as a core material to protect the tatami surface 2 on the upper surface and to provide cushioning properties. Put the non-woven fabric 4 and lay a back sheet 7 made of straw jam paper on the lower surface, and these non-woven fabric 4, rush board 5, wood raw material board 6, back sheet 7 with needles penetrated and integrated with tatami yarn, The tatami surface 2 is sewn with a tatami surface sewing thread.

  Therefore, the tatami mat 1 according to the first embodiment is extremely light compared to a tatami mat with a conventional rice straw as a tatami floor, and has antibacterial, insect-proof, and moisture-controlling properties. Generation of pests and insects can be prevented, and the rush board 5 and the wood raw material board 6 constituting the tatami floor 3 can be manufactured at a very low cost, so that the price of the tatami 1 is also reduced.

  And when the rush board 5 constituting the tatami floor 3 becomes old, the tatami surface 2, the nonwoven fabric 4, the wood raw material board 6, the back sheet 7 are removed, the rush board 5 is crushed, and the volume is increased over many years. The amount of cedar bark fibers loosened and the amount of rush cuts are replenished, polyethylene glycol is the main component, and an adhesive with latex added is mixed and heated at a heating temperature of about 180 ° C. By compressing until the thickness becomes about 10 mm, the rush board 5 can be reproduced, and can be recycled, so that it becomes an rush board and a tatami floor as an extremely environmentally friendly vegetation board.

  In this manner, the rush board 5 and the tatami floor 3 as the plant board according to the first embodiment can be obtained again by crushing the product and adding new raw materials when it becomes old. It can be recycled and can be manufactured using waste materials that are no longer needed in other manufacturing processes. It does not generate mold and pests, has excellent elasticity and strength, and is a lightweight and economical product.

Embodiment 2
Next, an rush board and a tatami floor as a vegetation board according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 2: is a longitudinal cross-sectional view which shows the internal structure of the tatami formed using the tatami floor using the rush board as a vegetation board concerning Embodiment 2 of this invention.

  As shown in FIG. 2, the tatami floor 13 according to the second embodiment is formed by laminating an rush board 8 having a thickness of about 10 mm and a wood flour board 12 as a wood raw material board having a thickness of about 40 mm.

  Of these, the rush board 8 has a tatami surface that has a cypress bark that has been reduced in bulk density by loosening the fibers of the cypress bark 4-5 times between two rollers having irregularities on the surface. 2 are mixed at a weight ratio of approximately 1: 1 with a piece of rush that is cut off as a milling material, and at a ratio of about 4 parts by weight with respect to 90 parts by weight of the mixture. An adhesive containing glycol as a main component and latex added thereto is mixed and compressed at a heating temperature of about 180 ° C. with a hot press until the thickness reaches about 10 mm.

  Therefore, the mixing ratio of the raw material of the rush board 8 is about 48% by weight of the cypress bark fibers, about 48% by weight of the rush piece, and about 4% of the adhesive mainly composed of polyethylene glycol. %. Since cypress contains ingredients having antibacterial and insect repellent properties including bark, it is possible to construct rush board 8 that is further superior in antibacterial and insect repellent properties in combination with rush pieces. In addition, the length of the piece of rush is in the range of about 3 cm to about 10 cm.

  On the other hand, the wood flour board 12 as a wood raw material board is a temperature range of about 130 ° C. to about 180 ° C. by spraying a small amount of adhesive on wood flour obtained by finely pulverizing wood pieces. By hot pressing, the lignin present in a ratio of about 25 wt% to about 30 wt% in the wood oozes out to act as a binder, and the wood powder is firmly bonded to each other. Such wood flour board 12 has a slightly higher specific gravity, but has a higher bending strength and is easier to handle.

  The tatami mat 11 according to the second embodiment has a tatami floor 13 composed of the rush board 8 and the wood flour board 12 as a core material for protecting the tatami surface 2 on its upper surface and providing cushioning properties. Put the non-woven fabric 4 and lay a back sheet 7 made of straw jam paper on the lower surface, and these non-woven fabric 4, rush board 8, wood flour board 12, back sheet 7 with needles penetrated and integrated with tatami yarn, The tatami surface 2 is sewn with a tatami surface sewing thread.

  Therefore, the tatami mat 11 according to the second embodiment is extremely light compared to a tatami mat using a conventional rice straw as a tatami floor, and has antibacterial properties, insect repellent properties, and humidity control properties. Can be prevented, and the raw material of the tatami floor 13 is cypress bark, which is a waste material when cutting cypress timber from the cypress tree, and the rush of rush cut off as timber when making a tatami surface Therefore, it can be manufactured at a very low cost and can contribute to the reduction of industrial waste.

  And when the tatami floor 13 becomes old, the tatami surface 2, the nonwoven fabric 4 and the back sheet 7 are removed, the rush board 8 is crushed, and the cypress bark fibers are reduced by the amount that has decreased over many years of use. Replenish the loose pieces and the rush of rush, mix the adhesive with polyethylene glycol as the main component and latex, and compress it with a hot press at a heating temperature of about 180 ° C. until the thickness is about 10 mm. Thus, the rush board 8 can be reproduced.

  In addition, the wood flour board 12 is also crushed, the wood powder is added by the amount that has decreased over many years of use, and a small amount of adhesive is applied by spraying to a temperature range of about 130 ° C to about 180 ° C. The wood flour board 12 can be reproduced by hot pressing. Thus, since the rush board 8 and the wood flour board 12 constituting the tatami floor 13 according to the second embodiment can be recycled and reused, the rush board and the tatami floor as an extremely environmentally friendly vegetation board are provided. It becomes.

  In this manner, the rush board 8 and the tatami floor 13 as the plant board according to the second embodiment can be obtained again by crushing the product and adding new raw materials when it becomes old. It can be recycled and can be manufactured using waste materials that are no longer needed in other manufacturing processes. It does not generate mold and pests, has excellent elasticity and strength, and is a lightweight and economical product.

  In each of the above embodiments, only the example where the rush board as a vegetation board is applied to the tatami floor has been described, but the rush board is also excellent in heat insulation and sound insulation, so it can be used for other building materials and the like. It is possible to use.

  In each of the above embodiments, only the rush board is described as the vegetation board. However, the vegetation board is not limited to the rush board, and various vegetation pieces of grass are used as the chopping pieces of the grass constituting the vegetation board. Thus, it is possible to provide a vegetation board having various functions to which the characteristics of the herb are applied.

  In carrying out the present invention, the configuration, components, shape, quantity, material, size, manufacturing method, and the like of the other parts of the vegetation board and the tatami floor are not limited to the above embodiments.

FIG. 1 is a longitudinal sectional view showing an internal configuration of a tatami formed using a tatami floor using an rush board as a vegetation board according to a first embodiment of the present invention. FIG. 2: is a longitudinal cross-sectional view which shows the internal structure of the tatami formed using the tatami floor using the rush board as a vegetation board concerning Embodiment 2 of this invention.

Explanation of symbols

1,11 tatami mat 2 tatami mat 3,13 tatami floor 5,8 rush board

Claims (7)

  A mixture of a bark of a tree, a piece of herb, and an adhesive mainly composed of polyethylene glycol is heat-molded with a hot press, or heat-compressed with a hot press and cut into a predetermined shape. A plant board characterized by   The vegetation board according to claim 1, wherein the piece of grass is a piece of rush.   An adhesive mainly composed of polyethylene glycol is used in the range of 45% to 49% by weight of loosened bark of the tree and in a range of 45% to 49% by weight of the herb piece. The vegetation board according to claim 1 or 2, wherein the vegetation board is contained within a range of 10% by weight to 10% by weight.   A tatami floor, wherein an rush board using a rush piece of rush as a cut piece of the herbaceous plant is used at least in a portion that hits the back side of the tatami surface.   The bark of the tree according to claim 2 or claim 3, wherein the bark of the tree is bark of cedar, and the cut ends of the rush are generated as waste material when producing a tatami surface. Tatami floor as described.   The tatami floor according to claim 4 or 5, wherein a timber raw material board made of a timber raw material close to 100% by weight and an adhesive of several weight% and the rush board are laminated.   7. The tatami floor according to claim 6, wherein the wood material board is a board made of virgin pulp and corn starch paste taken from cedar bark and cedar mill ends.

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