JP2004188048A - Eating utensil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low price, strong, safe and harmless eating utensil capable of being biodegraded and not producing harmful substances even if it is discarded and left in the soil without incineration. <P>SOLUTION: The eating utensil is formed by heating and pressure-molding a mixed material comprising 30-70 wt% of non-wood fiber powder made by crushing pulp of poaceous plants such as bamboo and reed and 30-70 wt% of biodegradable thermoplastic resin, or a mixed material comprising 30-70 wt% of non-wood fiber powder, 30-70 wt% of biodegradable thermoplastic resin, a small amount of one or more of a compatibilizing agent, an inorganic filler, an organic pigment and a flame retardant. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention particularly relates to tableware mainly composed of non-wood fibers and a biodegradable thermoplastic synthetic resin, which can protect environmental resources and solve pollution problems when disposed.
[0002]
[Prior art]
Conventional tableware is generally made of pottery, porcelain or metal.For example, simple tableware used in large quantities such as for lunch or disposable tableware is made of synthetic resin such as polypropylene resin as is well known. Plates, bowls, cups, forks, spoons, and the like, which are made of, and paper are often used.
[0003]
[Problems to be solved by the invention]
Such conventional simple dishes use a large amount of petroleum and pulp, which not only wastes natural resources and uses a large amount of chemicals, but also disposes of unnecessary dishes, for example, in landfills. Even if it is buried in the ground, it does not rot for a long time and emits harmful gas when incinerated.Therefore, there is a problem to be solved that causes environmental destruction, pollution, and pollution problems. Was.
[0004]
Therefore, in the present invention, in order to solve the above-mentioned problem when using such simple tableware in large quantities, mass production is possible using inexpensive plant materials and unused materials, and product prices are low. To provide tableware that is tough, safe and harmless, does not need to be incinerated when disposed of, and does not biodegrade and generate harmful substances even when disposed and left in the soil as it is. With the goal.
[0005]
[Means for Solving the Problems]
Means of the present invention taken to achieve the object will be described in terms of common terms with the description of the embodiment. The tableware of the first invention corresponding to claim 1 is a pulp of a grass plant such as bamboo or reed. This is a tableware obtained by heating and pressing a mixed material comprising 30 to 70% by weight of non-wood fiber powder obtained by crushing and 70 to 30% by weight of a biodegradable thermoplastic synthetic resin.
[0006]
The tableware according to the second aspect of the present invention is characterized in that 30 to 70% by weight of non-wood fiber powder obtained by crushing pulp of grasses such as bamboo and reed, and 70 to 30 biodegradable thermoplastic synthetic resins. This is a tableware obtained by heating and pressing a mixed material consisting of a weight% and a small amount of additives.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
In order to carry out the above-mentioned tableware of the present invention, the non-wood fiber powder used is a raw material of a raw plant body, and is composed of a bamboo stem, stem, skin, core, etc. having antibacterial properties. After pulping fibers of non-wood-based plants such as waste materials or grasses such as reeds, and crushing the pulp with a crusher, for example, the fineness of about 350 μm or less (preferably 250 μm or less) is obtained by a ball mill. Powder.
[0008]
The following types of biodegradable thermoplastic resins exist. That is, 1. For example, a biochemical polymer-based synthetic resin containing glycol and an aliphatic dicarboxylic acid as main raw materials; 2. For example, a natural polymer synthetic resin containing starch as a main component; For example, it is roughly classified into three types of microbial synthetic resins obtained by polymerizing organic acids produced by microorganisms. Any biodegradable thermoplastic resin may be used, but practical use is practical because biochemical polymer and microbial synthetic resins are readily available and inexpensive, and have thermoplasticity. It is a target.
[0009]
Additives are secondary materials added to the above-mentioned main materials for the purpose of improving or improving the quality of products, and the types of additives and the appropriate amounts in use are as follows. The mixing ratio is a numerical value based on the mixing ratio of 30 to 70% by weight of the non-wood fiber powder and 70 to 30% by weight of the biodegradable thermoplastic synthetic resin. 1. Compatibilizer (organic acid such as maleic anhydride, carboxylic acid, etc.) for improving the miscibility between the non-wood fiber powder and the biodegradable thermoplastic synthetic resin, 0.1 to 3% by weight; 2. 1 to 30% by weight of an inorganic filler (talc, limestone, iron oxide, calcium carbonate, etc.) for imparting a certain weight and rigidity to the product. 3. 1 to 30% by weight of an organic pigment for coloring the product in an arbitrary color tone (usually a pigment added to a synthetic resin); 10 to 30% by weight of a flame retardant (phosphate ester, barium metaborate, zinc borate, antimony trioxide, zircon oxide, aluminum hydroxide, etc.) for decombusting waste materials. These additives are mixed with the main material one by one or two to four types in an appropriate combination as needed.
[0010]
The mixed material obtained by mixing the main material and the additive based on the above is molded under the conditions of a molding temperature of 150 ° C. to 190 ° C., a molding pressure of about 500 to 900 kg / cm ² , and a molding time of about 20 seconds to 80 seconds Sec. Spoons, forks, and other types of tableware.
[0011]
Since the above-described tableware of the present invention is mainly composed of non-wood fiber powder and biodegradable thermoplastic synthetic resin obtained from non-woody waste materials such as bamboo and reeds which have been conventionally discarded, it is useful for protecting environmental resources. Is contributing. In addition, at the time of final treatment, and by burying it and completely biodegrading it by microorganisms to eliminate waste, and by realizing non-combustion, the generation of carbon dioxide gas and other harmful gases is prevented, It has the effect of preventing pollution and destruction of the living environment and contributing to the purification of environmental hygiene. In addition, in the production of this tableware, it is possible to use a conventional synthetic resin molding machine, so no extra capital investment is required, and in conjunction with the use of waste materials described above, it is possible to reduce manufacturing costs and product prices. And In addition, it has excellent appearance and strength due to the action of organic pigments and inorganic fillers, so it has the same practicality as conventional plastic tableware, is low in production cost, and does not require special disposal. Therefore, it is also useful as disposable tableware.
[0012]
【Example】
Hereinafter, various embodiments of the present invention will be described with reference to the description of the embodiments of the present invention and the drawings. FIG. 1 is a perspective view showing the appearance of the first embodiment, FIG. 2 is a perspective view showing the appearance of the second embodiment, and FIG. 3 is a perspective view showing the appearance of the third embodiment.
[0013]
The first embodiment is a fork as shown in FIG. About 22% by weight of bamboo fiber powder and about 22% by weight of reed fiber powder as non-wood fiber powder, and biodegradable thermoplastic synthetic resin degenerated from glycol and aliphatic dicarboxylic acid, which are biochemical polymer synthetic resins Approximately 30% by weight of a copolymerized polyester (Bionore, trade name) synthesized by a synthetic method, 3.5% by weight of a compatibilizing agent (carboxylic acid agent), 11% by weight of an inorganic filler (limestone), and 0.5% of an organic pigment. % By weight and 11% by weight of a flame retardant (phosphate ester) to obtain a mixture material for molding. The mixed material is molded at a temperature of 170 ° C. and a pressure of 700 kg / cm ² for 28 seconds. In addition, although not shown, there is a use example applied to similar tableware such as a spoon other than a fork.
[0014]
The second embodiment is a dish-shaped tableware. FIG. 2 shows the appearance of this embodiment. About 22% by weight of bamboo fiber powder and about 22% by weight of reed fiber powder as non-wood fiber powder, and starch, which is a natural polymer synthetic resin as a biodegradable thermoplastic synthetic resin, is used as a main component. About 30% by weight of a polymer alloy (trade name: Matterby), 3.5% by weight of a compatibilizer (carboxylic acid) as an additive, 11% by weight of an inorganic filler (calcium carbonate), 0.5% by weight of an organic pigment, and 11% by weight of a flame retardant (zinc borate) is mixed to form a mixed material for molding. The mixed material is molded at a temperature of 170 ° C. and a pressure of 700 kg / cm ² for 28 seconds. Although not shown in the drawings, the same material is used and molded in the same manner as in the second embodiment to form a food packaging container or a lunch container.
[0015]
The third embodiment is a cup-shaped tableware. FIG. 3 shows the appearance of this embodiment. About 22% by weight of bamboo fiber powder and about 22% by weight of reed fiber powder as non-wood fiber powder, and biodegradable thermoplastic synthetic resin from microbial polymer synthetic resins β-hydroxybutyric acid and β-hydroxyvaleric acid About 30% by weight of a microbial organic acid-produced organic acid (trade name: Biopol), 3.5% by weight of a compatibilizer (leic anhydride), 11% by weight of an inorganic filler (talc), and an organic pigment 0.5% and 11% by weight of a flame retardant (zirconium oxide) are mixed to form a mixed material for molding. The mixed material is molded at a temperature of 170 ° C. and a pressure of 700 kg / cm ² for 28 seconds. The embodiment shown in FIG. 3 is a commonly used coffee cup, but can be applied to a disposable cup used for a vending machine or the like.
[0016]
Although the embodiments that are considered to be representative of the present invention have been described above, the present invention is not necessarily limited to only the structures of the embodiments, but includes the above-described constituent features of the present invention, and The above-mentioned object can be achieved, and can be carried out with appropriate modifications within a range having the following effects.
[0017]
【The invention's effect】
The tableware according to the present invention comprises a mixture of non-wood fiber powder composed of fine powder of bamboo fiber, fine powder of reed fiber and biodegradable thermoplastic synthetic resin, a compatibilizer, an organic pigment, and an inorganic filler. It is manufactured by heating and pressurizing a mixed material in which a small amount of additives such as wood and flame retardant are mixed, so it uses non-woody unused materials such as bamboo and reeds that had been discarded in the past. Contributes to the protection of environmental resources. Also, at the time of final treatment, even if it is left buried without being incinerated, it is completely biodegraded by microorganisms, eliminating waste and realizing non-combustion. This has the effect of preventing the generation of harmful gases, preventing pollution and destruction of the living environment, and purifying environmental sanitation. Further, in producing this tableware, a conventional synthetic resin molding machine can be used, so no special or extra capital investment is required. It is possible to control the price. In addition, because it has excellent appearance and strength due to the action of organic pigments and inorganic fillers, it has the same practicality as conventional tableware, is low in production cost, and does not require special disposal treatment. They also have the effect of being useful as disposable tableware.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outer shape of a first embodiment of the present invention.
FIG. 2 is a perspective view showing an outer shape of a second embodiment.
FIG. 3 is a perspective view showing an outer shape of a third embodiment.
[Explanation of symbols]
1 tableware

Claims (4)

A mixed material consisting of 30 to 70% by weight of non-wood fiber powder obtained by crushing pulp of grasses such as bamboo and reed and 70 to 30% by weight of biodegradable thermoplastic synthetic resin is formed by heating and pressing. Tableware. A mixed material comprising 30 to 70% by weight of non-wood fiber powder obtained by crushing pulp of grasses such as bamboo and reed, 70 to 30% by weight of biodegradable thermoplastic synthetic resin, and a small amount of additives is heated. Tableware made by pressing. 3. The tableware according to claim 2, wherein the additive is selected from a compatibilizer, an inorganic filler, an organic pigment, a flame retardant, and one or more of them. The tableware according to claim 1, wherein the size of the particles of the non-wood fiber powder is 350 μm or less.

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