JP2008037081A - Manufacturing method of biomass foamed water vessel and its using method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water vessel or a biomass foamed board 16 which shows excellence in maintenance of a board balance and a stable directional guide due to a bending stress to a wave resistance, is composed mainly of a natural material, and recurs to nature when the board is unnecessary. <P>SOLUTION: The biomass foamed board 8 is made by inputting vegetable fibers 7 in a lignocellulose solution 5 as one of foaming liquids (Fig. 5), dispersing them sufficiently, and reacting the foaming and curable liquid 6. The obtained foamed body has increased strength. Since carbon dioxide gas generated by the foaming reaction is guided and discharged to the outside by utilizing porous thick layer paper 4 (Fig. 5) in the manufacturing process, it is possible to prevent a crack due to expansion or explosion of the gas in the foamed body and as a result increase bending strength and compression strength. The surfboard 16 is made by covering the whole board with a vegetable fiber cloth 14, and coating it with a vegetable resin 15. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

Detailed Description of the Invention

  In the present invention, a wood fiber-containing foam board obtained by reacting a lignocellulose solution containing a plant fiber and an isocyanate solution in a mold is covered with a plant fiber cloth over the entire surface. Further, the present invention relates to a water vehicle completed from above by a coating finish of a vegetable resin.

  Currently, the majority of surfboards cover polyurethane foam boards and polystyrene foam with glass fiber and are coated with unsaturated polyester resin, epoxy resin, etc., but this process requires large equipment and mechanical equipment, which increases costs. Moreover, since many chemical resins are used, it is conceivable that the generated gas is filled and the working efficiency is lowered. In some cases, there is a risk of adverse health effects.

Problems to be Solved by the Invention

  However, in the case of the above-mentioned surfboards, in order to quickly cope with the wave resistance by balancing the waves at sea, insufficient bending strength is a problem. In addition, the foam board floating on the surface of the water is soft instead of light, and thus has disadvantages such as breakage and easy damage. If the number of such boards increases in the future, the damaged parts will drift without being disassembled and become an environmental problem that threatens the surrounding nature.

The present invention has been made in view of such circumstances, and the first to third inventions utilize a method of foaming just by mixing two kinds of solutions, and a rectangular cubic mold and a triangular cubic mold. Since the foam board can be easily manufactured by the synthetic mold with the mold, a large-scale machine or equipment is unnecessary. The production of the foam is intended to produce a product of good quality in a short time.

  In the fourth invention, the plant fiber foam is further shaped to the board for surfing, reducing waste generated when making it into a board shape, while suppressing harmful gases generated during production, The purpose is to manufacture and process hazardous materials without using them.

  The fifth invention is a board that can increase the bending strength and flexibility for a foam board to withstand rough wave resistance, and allow the user to transmit accurate movements safely and without reducing the speed while balancing the body. The purpose is to provide.

Means for solving the problem

  The biomass foam according to the first aspect of the invention is characterized in that the fiber-containing foam obtained by uniformly mixing plant fibers in lignocellulose and reacting with an isocyanate solution disperses and absorbs carbon dioxide gas generated when foaming. To do.

  In producing the foam board reacted with the two liquids, by using a metal mold made of iron or aluminum, the surface is subjected to Teflon processing for the purpose of peeling, and in addition, a porous thick paper is placed. The present invention provides a technique for absorbing and releasing carbon dioxide gas generated during foaming.

  At this time, as in the second invention, a foam is made by pouring two liquids using a mold frame. In that case, by combining various types of molds, a free shape can be obtained. A foam is formed.

  This foam board can easily produce a board (blanks) containing plant fibers before shaping by a synthetic mold combining a square cubic mold with a lid with an opening and a triangular cubic mold.

  In addition, this mold frame has a double structure, and the external structure has an opening and a lid. By combining it with the triangular cube mold of the internal structure, a composite mold for surfboards can be formed. The conventional process of manufacturing a blank board by cutting the body board with a saw or a cutter can be omitted.

  The surfboard according to the fifth aspect of the present invention forms a formed product (blanks) by the manufacturing method of the wood foam board according to the first to fourth aspects of the invention, and further processes and shapes it into a standard board. Then, for the final finish, wrap a thin vegetable cloth from the back (bottom) to the front (deck), and paint with a natural type resin or vegetable resin from above.

The invention's effect

  According to the board of such a structure, the foam containing a vegetable fiber exhibits a heat insulation effect against summer solar heat. For this reason, the inside of the surfboard is not affected by the outside air temperature, and the plant fiber dispersed inside the foam expands between the bubbles so that heat is not trapped inside, in addition to the feature of increasing the strength of the board body. By holding down, it protects against deformation and cracking of the board.

  On the other hand, the above-mentioned foam board can withstand low temperatures with respect to the outside temperature in winter, and it will not be deformed and the strength will not decrease. Can be used.

  If the wooden board (stringer) 9 along the center used to increase the strength of this board is set in the center during the manufacturing process of the foam board and two liquids are poured, the wooden board (stringer) will be Since the bonding is performed in the foamed board, the conventional method can omit the step of bonding the board to both sides of the wooden board with an adhesive.

  Surfboards with foamed fibers have a bending strength of 2.5 times or more compared to other foamed urethane boards and polystyrene, and the tough fibers are present and dispersed inside the foam. Is obtained. Therefore, the wave resistance is excellent compared to other boards, and stable surfing operation is maintained without losing speed.

  Furthermore, this foam board can obtain MyBoard of the color that suits the taste from the original color of wood when the color pigment is put into lignocellulose liquid. In that case, the color will not melt or be harmful.

  In addition, the wood foam has a fragrance in the lignocellulosic liquid before mixing the two liquids. For example, the herb fragrance is maintained for 3 years. .

  Surfboards made of this foam can be used in a short time if two accidental liquids are prepared, applied to the damaged area, and joined as a first-aid measure if a major damage occurs accidentally during sports. It is possible to harden and return to the original board, and the ability to surf again is very convenient and you can enjoy sports with confidence.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a manufacturing diagram of a foam obtained by reacting two liquids 17 of a foaming solution by mixing and stirring. FIG. 2 is a diagram of assembling a surfboard mold 18. FIGS. It is shown. Further, this process is used to form a vehicle 16 on the water with the board 8 containing plant fibers.

  Once the two liquids are mixed, they change to the foam board 8 within a few minutes. However, by adjusting the temperature at which the mold 18 is heated, the time for foaming and curing can be shortened. Also, since the liquid injected into the mold enters the foaming stage in 3-5 minutes, the porous thick paper 4 is stretched until then, and the carbon dioxide gas that has been trapped inside is naturally Absorbed and released to the outside. If this carbon dioxide gas is contained in the foam, the inside of the foam expands and causes cracks, so that it is indispensable to prevent this.

  Furthermore, if a method of manufacturing a foam board at the same time as shown in FIG. 3 as shown in FIG. 3, the workability is improved and the cost is reduced.

  Further, the stirring of the two liquids may be an injection system using high pressure, or a stirrer may be used. The two-component liquid mixture 17 is injected into the mold shown in FIG. 3 after stirring. If the plant fibers 7 are mixed in advance in the lignocellulose solution 5 so as to be dispersed with an arbitrary length, the reaction with the isocyanate 6 as the foaming curing agent is good, and the foaming bond becomes smooth. And since the plant fiber 7 disperse | distributed in the foaming liquid mixture 17 has the function which absorbs the carbon dioxide gas which remain | survives inside, the crack prevention effect inside a foam is exhibited.

  At this time, when the two liquids react and foam, the inside of the mold rises to 46 to 48 degrees, and this exothermic temperature affects molding hardening. The porous thick paper 4 may be used.

  As for the method of assembling the above-mentioned molds, if the triangular cube-shaped molds 1 are respectively arranged in the squares of the quadrangular cube-shaped mold frame 2, the mold 18 for the blanks board can be obtained as shown in FIG. If this mold is used, the work process is omitted and the cost is reduced.

  In the case of manufacturing at a low temperature in winter, the voltage is set by putting a cart rich heater 120V (manufactured by RAMA) in the center of the mold. The setting is performed in the range of 40V to 50V. The temperature transmitted to the mold according to this voltage setting range is 35 to 44 degrees, and a high-quality foam is formed.

  Further, when the temperature in the voltage setting range is high, the temperature of the mold also rises and the foaming is accelerated, so that the foam is not uniformly cured. On the other hand, when the set temperature is low, it takes time for foam molding and slows down the curing, so that it can be solved by using the porous thick paper 4 having excellent heat retention.

  Next, an example of a surfboard using the above-described foam board will be described. FIG. 7 shows a biomass foam surfboard. The plant fiber 7 is dispersed and included in the foam of the surfboard 16. Further, in the shaping process, the plant thin cloth 14 is used to form the back surface 11 to the surface 12. And is coated with a vegetable resin 15 for final finishing.

  The plant fiber 7 contained in the foam board 8 strongly bonds the bubbles to each other, and for example, the binding force works and is maintained so as not to be destroyed even by the impact of the wave.

  Moreover, coating the vegetable fiber cloth 14 that wraps the entire board 8 serves to soften the impact of the waves hitting the board with flexibility, prevent the coating surface from peeling off, and protect the board that is easily damaged. .

  In addition, the foam board 8 is about 2.5 times stronger than polystyrene foam and urethane foam against the impact of waves, so it is safe while maintaining body balance smoothly while receiving wave resistance. Has the ability to catch waves quickly and accurately transmit directionality.

  Moreover, the plant fiber 7 contained in the foam board may be a fiber taken from jute, hemp, kenaf, kouzo, mitsumata, flux, ramie, sisal hemp.

  In addition, as the finish coating material for the biomass foam board 8, a vegetable resin or an improved resin may be used.

  The biomass foam board 8 became old during use and became impossible to use. It is not harmful if incinerated or if it is buried in the soil and returned naturally.

  Furthermore, as for the standard of the biomass foam surfboard 16, long, medium and short ones can be freely adjusted according to the size of the mold, and the final surfboard 16 cross section can be formed in one step. desirable.

  Next, using this foam board 8, in addition to the surfboard 16, windsurfing, bodyboarding, water skiing, kitesurfing and other sports clothing that slides on the water while resisting waves, life jackets, It can also be used for general purposes such as floating rings.

It is sectional drawing of the foam which mixed and reacted the foaming solution. It is a combination perspective view of a metal mold | die. It is a metal plan view for a surfboard It is a usage condition perspective view of porous thick paper. It is a manufacturing state perspective view of a foam board. It is a process status perspective view of a foam board. It is the perspective view and sectional drawing of a biomass surfboard.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Triangular cube metal mold, 2 Quadrangle cube metal mold, 3 Joining metal fittings, 4 Porous thick paper, 5 Lignocellulose solution, 6 Isocyanate solution, 7 Plant fiber, 8 Foam board with plant fiber, 9 Wooden board (stringer), 10 Board before shaping (blanks), 11 Bottom (back surface part), 12 Deck (surface part), 13 Earl part, 14 Plant fiber cloth, 15 Vegetable resin, 16 Surfboard, 17 Two-component foam, 18 Synthetic mold, 19 Lid 20 Stirring blade

Claims (5)

In the production of water vehicles, first, polyhydric alcohols are added to substances with plant fibers such as wood flour, plant stems, rice husks, etc. and heated at high temperature to form a lignocellulose solution, and plant fibers are added to it uniformly. The foam hardening liquid isocyanate is added to the mixed liquid, and the mixture is mixed and stirred to form a foam-resistant foam containing plant fibers. By mixing and stirring, the two liquids are poured into an iron mold before the foaming reaction starts. This mold has a peelable Teflon process on its surface, and a porous thick paper is stretched on the surface. Then, when the mold is covered and pressed from above, the porous layered paper absorbs a large amount of carbon dioxide gas generated at the same time as the foaming starts and releases it to the outside. It has the characteristics that can be. The molds according to the first and second aspects of the present invention are assembled into a foam board mold by first incorporating a triangular cube mold having a rounded corner on one side of a quadrangular cubic mold. In order to make the fiber-filled foam board described in claims 1 to 3 into a water vehicle board, a vegetable thin cloth is coated on the front and back boards for the purpose of increasing the strength of the foam board after surface shaping. In addition, a method for finishing the coating with a vegetable resin is established. Using the foam board according to claims 1 to 4, the foam board is utilized as a water vehicle that can withstand rough waves.

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