MXPA01002917A - Manufacturing method of substitute goods for plastic which made from natural materials - Google Patents

Abstract

A method for manufacturing plastic-substitute goods by using natural materials is disclosed. Agricultural byproducts and wood byprodructs such as rice husks, rice plant stems, corn plant stems, bean plant stems, wheat plant stems, saw dust and the like are crushed into a particular size, then the crushed particles are mixed with natural adhesives (such as corn starch, potato starch and the like), and are coated with rosin or natural resins, and then a molding is carried out by applying a pressure in a molding machine, thereby manufacturing the plastic-substitute goods. The raw materials of the present invention are readily available from the rural areas, and the molding is carried out at a temperature of 100 - 300 degrees C.

Description

METHOD OF MANUFACTURE OF SUBSTITUTE GOODS FOR PLASTICS THAT ARE MADE OF NATURAL MATERIALS FIELD OF THE INVENTION The present invention relates to a method for manufacturing plastic substitute goods when using natural materials. Particularly, the invention relates to a method for manufacturing plastic substitute goods by using natural materials, in which agricultural by-products and wood by-products such as rice husks, rice plant stems, corn plant stems, stems of Grain plant, wheat plant stems, sawdust and the like are pressed into a particular size, then the oppressed particles are mixed with natural adhesives (such as corn starch, potato starch and the like), and coated with resin of turpentine and natural resins, and then a molding is carried out by applying a pressure in a molding machine, thus manufacturing the plastic substitute goods.

BACKGROUND OF THE INVENTION Every day there are several goods that are made of plastic materials. In addition, their form and use are diversified, and have been continuously developed. However, plastic matepales are highly combustible, and therefore, in the event of a fire accident, they burn out quickly without allowing fire fighting time. In addition, when they burn, toxic gases are generated to sacrifice human lives. When they are discarded, they do not decompose, with the result of % * that the natural environment is contaminated.

BRIEF DESCRIPTION OF THE INVENTION The present invention is proposed to overcome the above disadvantages of conventional practice. It is therefore an object of the present invention to provide a method for manufacturing plastic substitute goods by using natural materials, in which one or more materials are selected from among agricultural by-products and wood by-products such as rice husks, stems of rice plant, stems of corn plant, stems of grain plant, stems of wheat plant, sawdust and the like, after they are rinsed, sorted and dried, then mixed with natural adhesives such as corn starch, potato starch and the like, then they are dried and pressed, then mixed with a coating material such as a rosin or natural resin, and then molded by pressure in a molding machine. Agricultural by-products and by-products can be used selectively, and rice husks, rice plant stems and other plant by-products can be used mixed. As the natural adhesive, corn starch and potato starch can be used, but other cereal powders can be used to obtain the same effect. Corn starch and potato starch are preferred because they are cheap. Substitute materials are raw in their sense of touch and color, and therefore, they can be dyed.

Turpentine resin is produced by removing turpentine oil from pine resin, and therefore, it is resistant to combustion. In addition, it hardens when heated and is resistant to moisture. In addition, when the product of the present invention is molded, the product can be easily separated from the molding nozzle due to the presence of rosin, and therefore, the rosin is an important element in the present invention. In the present invention, the molding is carried out at a temperature of 100-350 degrees C, the internal pressure is preferably 5 Kg / Cm2, and the molding speed is 30-80 seconds per product. Agricultural by-products, wood by-products and other plant by-products are mainly waste materials, and therefore, can be easily obtained. However, their availability is affected by the seasons, and therefore, the materials most readily available at the station can be used selectively.

BRIEF DESCRIPTION OF THE DRAWINGS The above object and other advantages of the present invention will be more apparent in describing in detail the preferred embodiment of the present invention with reference to the accompanying drawings in which: Figure 1 illustrates the constitution of manufacturing process of according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES The composition of the material of the present invention includes: one or more materials are selected from among agricultural by-products such as rice hulls, stems of rice plant, stems of corn plant, stems of grain plant, stalks of wheat plant, sawdust and the like; natural adhesives such as corn starch, potato starch and the like, and a coating material such as rosin, and natural resins and the like. The process for manufacturing plastic substitute goods using natural materials according to the present invention includes: a step of rinsing material; a step of drying rinsed material; a stage of submerging the dry materials in a glue; a stage of drying of materials after immersing it in the glue; a compression stage of the dry materials; a step of mixing the pressed particles with a coating material; and a step of molding the mixed materials. The chemical compositions of the materials of the present invention will be discussed in detail below. The patent application filed by the present applicant on June 18, 1999 and entitled "FOOD CONTAINER MADE OF NATURAL MATERIAL" was analyzed by the Korea Institute of Science and Technology for its chemical composition. The chemical composition of the material of the present invention is similar to that of the aforementioned patent application. Therefore, reference will be made to the data that is prepared by the Korea Institute of Science and Technology. Tables 1 and 2 analyze the ingredient materials that make up the container made of rice husks; and analyze the substances that are generated when the container is burned. < Expepment 1 > Table 1 . Analysis of the materials that make up the container In the table above, heavy metals that are harmful to the human body are classified. Only the silicone dioxide is 0.8% by weight, lead (Pb) is 0.0005% by weight or less, cadmium (Cd) is 0.00005% by weight or less, arsenic (As) is 0.0005% by weight or less, mercury (Hg) is 0.000005% by weight or less, copper (Cu) is 0.001 1 or less. In this way, heavy metals are lower than standard values, and therefore, can not give toxicity to the human body. The silicon dioxide corresponds to the quartz sand, and therefore, it is not harmful to the human body in all probability. Therefore, the ingrediematerials that constitute the matepal of the present invention are not harmful to the human body since they can be observed in Table 1 above. Table 2 below shows the measuremeof the materials that pollute the environment by Chungyong Enviroment Co., Ltd to see the degrees of contamination of the environment of the substances that are generated during the burning of the container that is made of rice husks. < Experiment 2 > Table 2. Measurement of environmental pollution during burning * The combustion speed was 81.5%. As seen in Table 2 above, the density of the containers was high, therefore, carbon monoxide (CO) was slightly generated during burning. However, it was found a little away from the standard contamination value, and therefore, the container is a non-polluting material as can be seen in Tables 1 and 2 above. Therefore, as can be seen in the comparison of Tables 1 and 2, the materials of the present invention are also non-polluting materials. Now, the method to manufacture the goods will be described Plastic substitutes when using natural materials according to the present invention based on current examples. < Example 1 > The rice husks were dried to a clean state. The rice hulls thus rinsed were dried to a drying degree of 98%. Meanwhile, 20% by weight of a starch was mixed with 80% by weight of water. This mixture was stirred, so that the starch and water could be mixed uniformly. After confirmation of the agitation result, sorting was carried out while slowly heating the mixture to 100 degrees C such that the mixture would not burn. When the mixture of the starch and water became heated, it became an adhesive. It was ensured that the glue did not agglomerate, and thus, the required viscosity of the glue remained. The dried rice husks were mixed with the glue, and then, an agitation was carried out, so that the rice husks would be thoroughly mixed with the glue. When it was confirmed that the rice husks and the glue were sufficiently mixed together, the mixture was dried to a drying degree of 98%. Therefore, the proportion of the starch glue was 20% by weight, while that of the rice husks was 80% by weight. After drying the mixture, it was pressed to a size range of 0.01 mm - 0.1 mm. Then 80% by weight of the shell-starch mixture was mixed with 5% by weight of water and 15% by weight of rosin or other natural resin. Then this final mixture was molded by a molding machine at a temperature of 100-350 degrees C and at a pressure of 5 Kg / Cm2. The product was molded at a frequency of 30-80 seconds. < Example 2 > The stems of the rice plant were cut to a certain length (3-5 cm). Afterwards, the cut stems were rinsed cleanly. The rinsed stems were dried to a drying degree of 98%. Meanwhile, 20% by weight of a starch was mixed with 80% by weight of water. This mixture was stirred, so that the starch and water could be mixed uniformly. After confirmation of the agitation result, sorting was carried out while slowly heating the mixture to 100 degrees C such that the mixture would not burn. When the mixture of the starch and water became heated, it became an adhesive. It was ensured that the glue did not agglomerate, and thus, the required viscosity of the glue remained. The dried rice plant stems were mixed with the glue, and then, an agitation was carried out, so that the rice plant would be thoroughly mixed with the glue. When it was confirmed that the rice plant and the glue were sufficiently mixed together, the mixture was dried to a drying degree of 98%. Therefore, the proportion of the starch glue was 20% by weight, while that of the rice plant was 80% by weight. After drying the mixture, it was pressed to a size range of 0.01 mm - 0.1 mm. Then 80% by weight of the rice-starch plant mixture was mixed with 5% by weight of water and 15% by weight of rosin or other natural resin. Then this final mixture was molded by a molding machine at a temperature of 100-350 degrees C and at a pressure of 5 Kg / Cm2. The product was molded at a frequency of 30-80 seconds per product. < Example 3 > The sawdust was rinsed cleanly. Then, the rinsed sawdust was dried by a 98% drying degree. Meanwhile, 20% by weight of a starch was mixed with 80% by weight of water. This mixture was stirred, so that the starch and water could be mixed uniformly. After confirmation of the agitation result, sorting was carried out while slowly heating the mixture to 100 degrees C such that the mixture would not burn. When the mixture of starch and water became heated, it became an adhesive. It was ensured that the glue did not agglomerate, and thus, the required viscosity of the glue remained. The dry sawdust was mixed with the glue, and then, an agitation was carried out, so that the sawdust would be completely mixed with the glue. When it was confirmed that the sawdust and the glue were sufficiently mixed together, the mixture was dried to a drying degree of 98%. Therefore, the proportion of the starch glue was 20% in weight, while that of sawdust was 80% by weight. After drying the mixture, it was pressed to a size range of 0.01 mm - 0.1 mm. Then 80% by weight of the sawdust-starch mixture was mixed with 5% by weight of water and 15% by weight of rosin or other natural resin. Then this final mixture was molded by a molding machine at a temperature of 100-350 degrees C and at a pressure of 5 Kg / Cm2. The product was molded at a frequency of 30-80 seconds per product. < Example 4 > The stems of corn plant were cut to a certain length of 3-5 cm. Then, the cut maize stems were rinsed cleanly, and then, the rinsed corn plant stalks were dried to a 98% degree of drying. Meanwhile, 20% by weight of a starch was mixed with 80% by weight of water. This mixture was stirred, so that the starch and water could be mixed uniformly. That is, the agitation was carried out while the degree of mixing is verified visually. After confirmation of the agitation result, sorting was carried out while slowly heating the mixture to 100 degrees C such that the mixture would not burn. When the mixture of the starch and water became heated, it became an adhesive. It was ensured that the glue did not agglomerate, and thus, the required viscosity of the glue remained. The dry maize plant stems were mixed with the glue, and then, an agitation was carried out, so that the stems of corn plant would be completely mixed with the glue. When it was confirmed that the corn plant stems and the glue were sufficiently mixed together, the mixture was dried to a drying degree of 98%. Therefore, the proportion of the starch adhesive was 20% by weight, while that of the stems of the corn plant was 80% by weight. After drying the mixture, it was pressed to a size range of 0.01 mm - 0.1 mm. Then 80% by weight of the maize-starch plant mixture was mixed with 5% by weight of water and 15% by weight of rosin or other natural resin. Then this final mixture was molded by a molding machine at a temperature of 100-350 degrees C and at a pressure of 5 Kg / Cm2. The product was molded at a frequency of 30-80 seconds per product. < Example 5 > The stems of wheat plant were cut in a size range of 3-5 cm. Then, the cut wheat plant stalks were rinsed cleanly, and the rinsed wheat plant stalks were dried to a 98% degree of drying. Meanwhile, 20% by weight of a starch was mixed with 80% by weight of water. This mixture was stirred, so that the starch and water could be mixed uniformly. That is, the agitation was carried out while the degree of mixing is verified visually. After the confirmation of the agitation result, a classification was carried out while slowly heating the mixture until 100 degrees C in such a way that the mixture would not burn. When the mixture of the starch and water became heated, it became an adhesive. It was ensured that the glue did not agglomerate, and thus, the required viscosity of the glue remained. The dried wheat plant stalks were mixed with the glue, and then, an agitation was carried out, so that the stalks of wheat plant would be thoroughly mixed with the glue. When it was confirmed that the wheat plant stems and the glue were sufficiently mixed together, the mixture was dried to a drying degree of 98%. Therefore, the proportion of the starch glue was 20% by weight, while that of the wheat plant stems was 80% by weight. After drying the mixture, it was pressed to a size range of 0.01 mm - 0.1 mm. Then 80% by weight of the wheat-starch plant mixture was mixed with 5% by weight of water and 15% by weight of rosin or other natural resin. Then this final mixture was molded by a molding machine at a temperature of 100-350 degrees C and at a pressure of 5 Kg / Cm2. The product was molded at a frequency of 30-80 seconds per product. < Example 6 > The stems of the grain plant were cut in a size range of 3-5 cm. Then, the cut grain plant stems were rinsed cleanly, and the rinsed grain plant stems were dried to a 98% degree of drying. Meanwhile, 20% by weight of a starch was mixed with 80% in weight of water. This mixture was stirred, so that the starch and water could be mixed uniformly. That is, the agitation was carried out while the degree of mixing is verified visually. After confirmation of the agitation result, sorting was carried out while slowly heating the mixture to 100 degrees C such that the mixture would not burn. When the mixture of the starch and water became heated, it became an adhesive. It was ensured that the glue did not agglomerate, and thus, the required viscosity of the glue remained. The dried grain plant stems were mixed with the glue, and then, an agitation was carried out, so that the stems of the grain plant would be thoroughly mixed with the glue. When it was confirmed that the stems of the grain plant and the glue were sufficiently mixed together, the mixture was dried to a degree of drying of 98%. Therefore, the proportion of the starch adhesive was 20% by weight, while that of the grain plant stems was 80% by weight. After drying the mixture, it was pressed to a size range of 0.01 mm - 0.1 mm. Then 80% by weight of the grain-starch plant mixture was mixed with 5% by weight of water and 15% by weight of rosin or other natural resin. Then this final mixture was molded by a molding machine at a temperature of 100-350 degrees C and at a pressure of 5 Kg / Cm2. The product was molded at a frequency of 30-80 seconds per product. In the foregoing, regarding the oppressed size of the agricultural by-products such as rice husks, sawdust, rice plant stems, corn plant stems, wheat plant stems, grain plant stems and the like, sizes of less than 0.01 mm or more than 0.1 mm are possible. If the raw material is a plant, any kind would be possible. In addition, rice husks, sawdust, rice plant stalks, corn plant stalks, wheat plant stalks, grain plant stalks and the like could be used in combination depending on the needs or use. According to the present invention as described above, the raw materials are readily available, and therefore, the substitution effects will be greater. In addition, the raw materials are mainly combustible, but due to the resistant pressure during molding, the product does not burn easily. Even if the product burns, the toxic gases will not be generated, and the flame will be of a low temperature class. Therefore, in the case of a fire accident, the product will not contribute to the worsening of the catastrophe.

Claims (6)

1. CLAIMS 1. A method for manufacturing plastic substitute goods using natural materials, comprising the steps of: preparing a glue by mixing 20% by weight of a starch and 80% by weight of water together, and heating this mixture; rinse and dry rice husks at a drying rate of 98%; mix the glue and rice husks together to form a mixture of the glue and the rice husks, dry them to a 98% degree of drying, and press them to a size range of 0.01-0.1 mm; mixing 80% by weight of the mixture of the glue and the rice husks, 5% by weight of water, and 15% by weight of the turpentine resin to form a final mixture; and molding the final mixture by a molding machine at a temperature of 100-350 degrees C under a pressure of 5 Kg / Cm2 at a production frequency of 30-80 seconds per product.
2. 2. A method for manufacturing plastic substitute goods using natural materials, comprising the steps of: preparing a glue by mixing 20% by weight of a starch and 80% by weight of water together, and heating this mixture; cut stems of rice plant in 3-5 cm, and rinse and dry stems of rice plant at a drying degree of 98%; Mix the glue and stems of rice plant together to form a mixture of the glue and stems of rice plant, dry them to a drying degree of 98%, and press them to a size range of 0.01 -

   0. 1 mm; mixing 80% by weight of the glue mixture and stems of rice plant, 5% by weight of water, and 15% by weight of turpentine resin to form a final mixture; and molding the final mixture by a molding machine at a temperature of 100-350 degrees C under a pressure of 5 Kg / Cm2 at a production frequency of 30-80 seconds per product.
3. 3. A method for manufacturing plastic substitute goods using natural materials, comprising the steps of: preparing a glue by mixing 20% by weight of a starch and 80% by weight of water together, and heating this mixture; rinse and dry sawdust at a drying rate of 98%; mix the glue and sawdust together to form a mixture of glue and sawdust, dry them to a drying degree of 98%, and press them to a size range of 0.01-0.1 mm; mixing 80% by weight of the glue and sawdust mixture, 5% by weight of water, and 15% by weight of turpentine resin to form a final mixture; and molding the final mixture by a molding machine at a temperature of 100-350 degrees C under a pressure of 5 Kg / Cm2 at a production frequency of 30-80 seconds per product.
4. 4. A method for manufacturing plastic substitute goods using natural materials, comprising the steps of: preparing a glue by mixing 20% by weight of a starch and 80% by weight of water together, and heating this mixture; cut stems of corn plant in 3-5 cm, and rinse and dry the stems of corn plant at a drying degree of 98%; mix the glue and stems of corn plant together to form a mixture of the glue and stems of corn plant, dry them to a drying degree of 98%, and press them to a size range of 0.01-0.1 mm; mixing 80% by weight of the glue mixture and stems of corn plant, 5% by weight of water, and 15% by weight of turpentine resin to form a final mixture; Y . molding the final mix by a molding machine at a temperature of 100-350 degrees C under a pressure of 5 Kg / Cm2 at a production frequency of 30-80 seconds per product. A method for manufacturing plastic substitute goods using natural materials, comprising the steps of: preparing a glue by mixing 20% by weight of a starch and 80% by weight of water together, and heating this mixture; cut stems of wheat plant in 3-5 cm, and rinse and dry the stems of wheat plant at a drying degree of 98%; mix the glue and stems of wheat plant together to form a mixture of the glue and stems of wheat plant, dry them to a drying degree of 98%, and press them to a size range of 0.01-0.1 mm; mixing 80% by weight of the glue mixture and the stems of wheat plant, 5% by weight of water, and 15% by weight of turpentine resin to form a final mixture; Y molding the final mix by a molding machine at a temperature of 1 00-350 degrees C under a pressure of
5. 5 Kg / Cm2 at a production frequency of 30-80 seconds per product.
6. 6. A method for manufacturing plastic substitute goods using natural materials, comprising the steps of: preparing a glue by mixing 20% by weight of a starch and 80% by weight of water together, and heating this mixture; cut stems of grain plant in 3-5 cm, and rinse and dry the stems of grain plant at a drying degree of 98%; mix the glue and grain plant stems together to form a mixture of the glue and grain plant stems, dry them to a drying degree of 98%, and press them to a size range of 0.01-0.1 mm; mixing 80% by weight of the glue mixture and the stems of the grain plant, 5% by weight of water, and 15% by weight of the turpentine resin to form a final mixture; and molding the final mixture by a molding machine at a temperature of 100-350 degrees C under a pressure of 5 Kg / Cm2 at a production frequency of 30-80 seconds per product.