JP2005328741A - Vegetation board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vegetation board by reusing plant waste such as thinnings, pruned branches and leaves and glasses. <P>SOLUTION: This vegetation board 1 is obtained by mixing the chips of plant waste such as thinnings, pruned branches and leaves and glasses with cohesive soil such as Akadama soil (reddish granular viscous soil produced from Kanto loam layer in Japan) and a binder comprising a polyvinyl acetate emulsion, filling the mixture in a molding box followed by press molding. Holes 2 of an appropriate size to plant seedlings 3 in are set on the vegetation board 1. A ground level is greened through planting seeds or seedlings on the vegetation board 1 and arranging the vegetation boards on a slope. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vegetation board made mainly of wood chips using waste wood from trees such as thinned wood, bark, pruned branches and leaves.

  Thinned wood cannot be used as a structural material, and a lot of woody waste generated by pruning and pruning in parks and other plants is discharged, but it is incinerated without being effectively used. Mostly.

JP 2004-060276 A JP 2003-321840 A Japanese Patent Application Laid-Open No. 2003-082673

  The present invention has been made paying attention to such a situation, and effectively uses plant waste by producing a vegetation board using plant waste such as thinned wood or bark, pruned branches and leaves. A vegetation board is manufactured and used for greening.

Thin wood, bark, pruned waste chips, or chips and clay and water-soluble binder are mixed and filled into a formwork, and pressed to form a vegetation board.
Examples of plant waste materials include felled trees such as thinned wood, pruned branches, and bark. In addition, pruned trees generated from the planting of facilities such as street trees and parks can be used.

  These plant wastes are made into chips using a wood crusher. The size of the chip is preferably less than 25 mm in length, 2 to 15 mm in width and 0.5 to 5 mm in thickness, more preferably 5 to 15 mm in length, 2 to 10 mm in width and 0.5 in thickness. ~ 2mm.

  The clay to be mixed with the chip of the plant waste material is preferably clay (commonly known as akadama soil) calculated from the lower layer board of Kanuma soil, the clay used as the base material of the roof tile, and its particle size is 5 to 10 mm. What mixed 10-20mm by 1: 1 is preferable. The aqueous binder is, for example, a vinyl acetate emulsion that does not adversely affect the human body or plants, and is added as a binder and kneaded to uniformly disperse the chips in the viscous soil.

The mixing ratio between the chip of the plant waste material and the aqueous binder is determined so that the molded product after the binder is cured has an appropriate elasticity and shape retention and has a hardness that can be easily cut with a cutter.
When vinyl acetate emulsion is used, 300 g of binder is added to 500 g of chips and 2 kg of clay, and the mixture is mixed with a mixer or the like to form a uniform state. Thus, a vegetation board including plate-like wood chips is obtained.
This vegetation board is laid on the slope and used for greening. Multiple holes for planting may be provided as necessary.

Example 1
500 g of thinned wood chips, 1.5 kg of Kanuma soil (red bean clay) and 350 g of binder made of polyvinyl alcohol were mixed with a mixer and kneaded until uniform. This mixture was filled into a square mold having a size of 50 × 30 cm and a depth of 10 cm, and pressed to form a vegetation board.

  When the implantation hole 2 is formed in the vegetation board, a cylindrical body having a diameter of 5 to 10 cm is fixed inside the mold at an appropriate position of the mold, and the chip mixture is filled and press-molded. Since the cylindrical part is not filled with the mixture and becomes a cavity, soiled seedlings can be inserted into the cavity and fixed. By adding soil containing microorganisms that can decompose chips as needed, the rate of natural decomposition increases.

  As shown in FIG. 2, vegetation boards 1 including wood chips are laid down in a vertical and horizontal direction on the slope, and anchors are driven through the vegetation board 1 into the slope as necessary to fix the vegetation board to the slope.

  The vegetation board is a press-molded mixture of wood chips, cohesive soil, and binder, so it has moderate water permeability, water retention, air permeability, etc. Can promote greening of the ground with vegetation board.

Example 2
As shown in FIG. 3, a vegetation board 1 in which the mixture of the wood chip produced in Example 1 and viscous soil and an aqueous binder is press-molded into a cylindrical or square shape without a bottom, and the center part is a cavity 4. is there. The size is appropriately determined according to the place where the vegetation board is installed. For example, it has a cylindrical shape with an inner diameter of 20 cm, a wall thickness of 2.5 cm, and a height of 6 cm. The vegetation board 1 is pressed against a slope or the like and fixed, and the internal cavity 4 is filled with soil containing plant seeds to prevent the soil from flowing out due to rainwater, thereby greening the ground. Moreover, the cavity 4 may be filled with soil mixed with fertilizer to plant plant seedlings.

Plant waste materials such as thinned wood, pruned branches, grasses, etc., which had to be disposed of by incineration as waste can be used effectively, and greening of the ground can be achieved.
The vegetation board is made up of plants and soil, and only natural ones are used. After the planted plants grow, they return to nature, and no environmental problems occur.

The perspective view of the Example of a vegetation board. The perspective view which shows the utilization condition of a vegetation board. The perspective view of the other Example of a vegetation board.

Explanation of symbols

1 Vegetation board 2 Planting hole 3 Seedling

Claims (4)

A vegetation board obtained by kneading a mixture of wood chips, a viscous soil having a particle size of 5 to 15 mm and 15 to 30 mm, and an aqueous binder and pressing the mixture into a predetermined shape. The vegetation board according to claim 1, wherein microorganisms that decompose wood chips are added to the soil. The vegetation board in which the planting hole of the plant in any one of Claim 1 or 2 is formed. 4. The vegetation board according to any one of claims 1 to 3, wherein the wood chip is obtained by pulverizing any one of a thinned material, a felled tree, a pruned branch leaf, or a mixture thereof.

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