KR20010084006A - A method for coloring polymer materials with green tea - Google Patents

Abstract

PURPOSE: Provided is a method for coloring polymer materials using green tea leaves smashed finely. The polymer materials colored by the natural coloring matter of green tea leaves has the advantages of such as harmless of human, no-decoloration and no-discoloration by heat resistance, decay resistance and chemical resistance. CONSTITUTION: The method proceeds to such as follows: smashing the green tea leaves with a size of 75μm; and mixing the smashed green tea leaves with polymer resin with 0.1 % (wt.).

Description

A method of coloring polymeric materials using green tea leaves {A METHOD FOR COLORING POLYMER MATERIALS WITH GREEN TEA}

The present invention relates to the coloring of polymeric materials using natural pigments of finely ground green tea leaves.

The remarkable developments in the automotive, electrical, and electronics industries have spurred innovation in the polymer industry, namely raw materials and molding technology, which have replaced other materials as an indispensable element in all industries. This not only has the advantage that the polymer material can be mass-produced and has excellent functionality, but it also improves the value of the product with various color materials by using various modification methods including coloring, and provides information on the contents, protection of the contents, This is because the optical and electrical properties can be improved.

In particular, among the various factors that increase the utilization rate of the polymer material, the pigment used to color the polymer material has recently become more important. This is because colored pigments account for a small portion of the overall raw material composition of the finished plastic products, which is 0.1 ~ 0.5%.

However, conventional domestic pigments have poor colorability and poor weatherability, heat resistance, and chemical resistance, making it difficult to achieve high quality products. In addition, the color of the colored product is non-uniform, there is a fear of discoloration and discoloration, which is one cause of the international competitiveness of the product.

In addition, pigments conventionally used in the polymer industry include inorganic pigments such as oxides, hydroxides, sulfides, chromates, silicates, sulfates, and azo, polycyclic, dye-nake, azine, daylight fluorescent, Nitrozo-based and nitro-based organic pigments are mostly harmful to the human body, and only a portion of them use natural pigments, and thus, it is necessary to develop domestic natural pigments that are more environmentally friendly and harmless to humans.

Therefore, the present invention is to develop a method for coloring a polymer material using a natural pigment of green tea leaves, which is a domestic natural material, to solve the effects of import substitution and the problem harmful to the human body at the same time. In addition, the purpose of the present invention is to improve the value of the polymer product and to provide a coloring method in consideration of the harmfulness and environmental aspects of contact with the human body by adding a unique high quality and subtle color of green tea to the polymer material.

The present invention is a coloring method of a polymeric material, characterized in that the fine pigment green tea leaves of the polymeric material are finely ground and mixed with the polymeric material to be colored.

The polymer material used in the present invention can be applied to all plastic products that are commercially available by mixing artificial pigments. When coloring by adding artificial pigment to the polymer material, green tea leaves, which are natural colors, are added in place of artificial pigment. The green tea leaves, which are natural pigments, are pulverized into fine powders having a particle size of about 75 μm, and the powder is added at 0.1% by weight based on the polymer resin. The polymer resin to which the green tea leaf powder is added is mixed well and mixed to produce a desired product.

Advantages of the polymer raw material colored by the present invention are as follows.

First, since the pigment pigment using the green tea leaf developed by the present invention is a natural pigment mixed in the polymer material, not only the coloring power, but also the weather resistance, heat resistance, and chemical resistance is strong, as well as the color of high-quality and soft green tea does not discolor or change. It is expected to be continuously maintained to improve the quality of the product and further enhance the international competitiveness of the product.

Second, by using no additives harmful to the human body in tableware-related products such as kitchen utensils, it can be used in products such as tableware and cooking utensils in direct contact with food. In particular, it can be used for hot foods that are cooked with heat, or foods containing natural and food colors that cause discoloration or discoloration.

Third, most home appliances such as TVs and computer cases are made of non-conductor and durable plastic. By using green tea leaves, which are natural pigments, these home appliances can have a natural friendly visual effect.

Fourth, baby care equipment for children and toys for children using light weight and free plastic plastic material as the main material, artificial coloring pigments harmful to the human body is indiscriminately used to induce visual curiosity of the child. In particular, baby care equipment, toys, etc. are easily sucked by the baby mouth is greatly affected by chemicals. However, the coloring using the green tea leaves according to the present invention, while showing a visually good coloring effect and is harmless to the human body, it can be used for infant devices and children's toys.

Fifth, there are landscaping products for growing plants among the products that use a lot of plastic materials. For example, landscaping products, such as flower pots and vases, are intended for the rearing of plants, so it is preferable to use natural pigments because they can be greatly influenced by chemical additives. In addition, by using a natural pigment such as green tea leaves, even if exposed to ultraviolet light or the like for a long time does not become discolored and discolored, the quality improvement of the landscape products can be expected.

Finally, it is possible to prevent the environmental pollution by the dye generated during the processing of plastic material can be produced environmentally friendly plastic.

Claims (2)

Pigmented Pigment of Polymer Material A method of coloring a polymer material, characterized in that the green tea leaves are finely ground and mixed with the polymer material for coloring. 2. The method of coloring a polymeric material according to claim 1, wherein the green tea leaves are ground to about 75 µm and blended at 0.1 wt% with respect to the polymeric resin.