Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1993-10-19
1996-06-04
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 45, 524 47, 523124, 523128, 47 66, 47 76, 47 74, 47 73, 206805, C08L 8900, C08L 300, A01G 902, A01G 2302
Patent
active
055233317
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a rubber composition which is decayable in soil, and is suitable as an article for binding pot soil stuck to the roots of transplanted plants, and including rubber bands, rubber tapes, rubber nets and binding cloth made therefrom for binding pot soil stuck to the roots of transplanted plants.
BACKGROUND ART
In the case where roots are exposed to the sun and wind during transplanting, the chance of the plant taking root is materially reduced. Then, generally, the pot soil stuck to the roots dug up are maintained, transported and buried in the hole dug at the desired location. In Japan, in order to enhance the efficiency of holding the pot soil stuck to the transported and transplanted roots of young plants such as boxwoods and azaleas, the pot soil is wrapped in hemp cloth, straw matting or straw and then bound with ropes. If the pot soil stuck to the roots is not maintained well and crumbles, the plants cannot take root after transplanting, and therefore the value of the plants as articles of commerce is materially reduced. However, a method of binding hemp cloth, straw matting or straw using rubber bands instead of the ropes is proposed for improving working efficiency. The working efficiency in the method of expanding rubber bands and binding pot soil stuck to the roots wrapped in hemp cloth, straw matting or straw, because of the elasticity of the rubber bands, is 500 plants/day and higher. Even an amateur can easily carry out the present method. In the case of using ropes, a skilled worker can only wrap 300 plants/day. Since the decay of the pot soil stuck to the roots is required to enhance the plant in taking root and to enhance the growth of the roots after transportation and transplanting, some workers bury the roots without removing the rubber bands. However, since rubber bands decay more slowly than ropes, the rubber bands are frequently removed before the roots are buried. Especially when public institutions carry out a tree planting, there are some cases where the ropes should be wound around the soil.
On the other hand, in the case of big or middle size trees, as shown in FIG. 1, the soil stuck to the roots are wrapped in hemp cloth, straw matting or straw and held in place with a coiled rope. Alternatively, as shown in FIG. 2, the pot soil stuck to the roots is held tightly by means of a straw rope would therearound so as to prevent the dropping off of the pot soil stuck to the roots. However, a selling point of big or middle size trees used as garden plants is the shape and roots of the trees. Even if the shape of the tree is good, if the chance of the tree taking root after transportation is poor, such trees have little value. Therefore, straw ropes are required to be wound evenly and tightly in order that the pot soil stuck to the roots will not crumble during transportation. If there is conveniently a thick root at the time when the straw ropes are wound therearound, the ropes can be wound around the root as a support. However, if there is no thick root, as shown in FIG. 3, the support is driven into the pot soil stuck to the roots and the straw ropes are wound therearound. All plants do not have the same size of pot soil stuck to the roots and the pot soil has various sizes and shapes. And the soil varies greatly in quality from sandy to clay. Therefore, it is very difficult to wind the straw ropes evenly and tightly to the roots in order that the pot soil stuck to the roots will not crumble. This requires considerable skill by workers.
In some foreign countries, there is used the frozen soil method in which frozen land, like bedrock, is cut with a plow and the roots and the frozen soil are lifted as a unit and transported; the board enclosure method in which the roots are enclosed by a square or circle of boards (see FIG. 4); and the cloth winding method in which the pot is wrapped with cloth, wire and wire netting; and other methods. However, it is said that these methods are rough as a transportation technique and the above-mentione
REFERENCES:
patent: 2203701 (1940-06-01), Shepherd
patent: 4990541 (1991-02-01), Nielsen et al.
Asahi Co., Ltd.
DeWitt LaVonda R.
Michl Paul R.
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