KR101771970B1 - Airtight container and preparation method thereof - Google Patents

Abstract

The present invention relates to a hermetically sealed container and a manufacturing method thereof. Specifically, the present invention relates to a sealed container comprising pegmatite in a plastic material, zeolite and pegmatite in a plastic material, and a method of manufacturing the same. The closed container made of a plastic material according to the present invention and the plastic container made of the same according to the method of the present invention efficiently release ethylene and carbon dioxide promoting the aging and maturation of the plant to store plants and foods stored in the closed container for a longer period of time do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an airtight container,

The present invention relates to a sealed container and a method of manufacturing the same.

Various foods including fruits, ginseng, ginseng, vegetables, and plants and plants such as kimchi are packaged and preserved in various plastic containers or films (hereinafter referred to as "plastic products") during distribution and at home. Plastics used for this purpose must not be harmful because they are in direct contact with food, and should not react when contacted with plants and food.

Ethylene, on the other hand, is a mature and aging hormone present in plants as a gas. Ethylene is produced when plants mature, including fruit, vegetables, flowers, and all agricultural produce. On the contrary, only when ethylene is produced, plants can grow. Such ethylene is continuously generated in plants even after the maturation, and there is a problem that the aging of the plant can not be delayed if it does not prevent the generation of ethylene from the harvested agricultural products or does not remove the generated ethylene.

Carbon dioxide is also released from inside the crop when it breathed. If the discharged carbon dioxide can not escape from the storage container and accumulate in the storage container, there is a problem that the quality of the crop is adversely affected.

In order to solve the problems of the prior art as described above, even when the foods containing various plants and plants such as fruits, various foods, ginseng or ginseng are discharged, the contents are not easily decayed, And to provide an airtight container that can be used.

In order to solve the above problems, the present invention provides a zeolite comprising 8.3 to 9.92% by weight of zeolite, 1.34 to 1.6% by weight of pegmatite and 88.5 to 90.4% by weight of a plastic material, wherein the weight ratio of pegmatite to zeolite is 1: 6.1 to 1: As a result of measurement of carbon dioxide and ethylene emission at 25 占 폚, a plastic container that releases 2 to 2.5 占 / / kg / k2 carbon dioxide and 55 to 65 ppm ethylene is provided.

According to a preferred embodiment of the present invention, the plastic material may be at least one selected from the group consisting of polypropylene (PP), polyvinylpyrrolidone (PVP), polyvinyl chloride (PVC) .

The present invention also provides a method for producing a plastic material, comprising: melting a plastic material to be in a liquid state; Mixing the zeolite and pegmatite in a liquid state, and stirring the plastic to prepare a mixture; Preparing an injection molding of the mixture; Wherein the weight ratio of the pegmatite to the zeolite is from 1: 6.1 to 1: 6.2, and the mixture comprises from 8.3 to 9.92 wt% of zeolite, 1.34 to 1.6 wt% of pegmatite, And 88.5 to 90.4% by weight of the material, and measuring the amount of carbon dioxide and ethylene released at 25 ° C, the result is a method of producing a plastic container which is capable of releasing 2 to 2.5 μl / kg / k 2 of carbon dioxide and 55 to 65 ppm of ethylene .

According to a preferred embodiment of the present invention, the plastic material may be at least one selected from the group consisting of polypropylene (PP), polyvinylpyrrolidone (PVP), polyvinyl chloride (PVC) .

INDUSTRIAL APPLICABILITY The closed container according to the present invention is a closed container which effectively releases ethylene and carbon dioxide. When the closed container according to the present invention and the closed container manufactured according to the manufacturing method are used, the plants and various foods are not decayed, I will.

1 is a photograph showing a closed container according to the present invention and a closed container including the contents.

As a result of intensive researches to overcome the problems of the prior art, the present inventors have found that it is possible to efficiently release ethylene and carbon dioxide therein by mixing pegmatite in a conventional plastic container and mixing zeolite and pegmatite. Thus, it is possible to prevent the content stored in the container, for example, the aging of the food or the plant. As a result, it has been confirmed that various foods and plants can be preserved for a long period of time by preventing the contents from being corrupted when stored in an airtight container according to the present invention, thereby completing the present invention.

Specifically, the closed container according to the present invention includes a plastic material used in the production of a container by mixing pegmatite or a mixture of zeolite and pegmatite.

The plastic material includes one in which one or more of the group consisting of polypropylene (PP), polyvinylpyrrolidone (PVP), polyvinyl chloride (PVC), and the like are mixed and used. Such plastic includes pegmatite or zeolite and pegmatite, preferably 85 to 95 parts by weight.

Also, when pegmatite alone is mixed in the plastic material, the pegmatite may include 2 to 12 parts by weight. In the case of producing the hermetically sealed container by mixing the pegmatite with the plastic material in the above range, the effect of simultaneously removing ethylene and carbon dioxide is enhanced as compared with the case of producing a hermetically sealed container using only plastic material or mixing zeolite only with plastic material . On the contrary, when the closed container is made of only the plastic material, there is no effect of removing either ethylene or carbon dioxide, and when only zeolite is added to the plastic material, there is an effect of removing only ethylene in a very small amount without removing the carbon dioxide Only.

When zeolite and pegmatite are mixed in a plastic material, the zeolite preferably comprises 5 to 10 parts by weight, and most preferably 8 to 8 parts by weight. The pegmatite preferably comprises 1 to 5 parts by weight, and most preferably 1.2 to 1.6 parts by weight. Therefore, unlike the case of manufacturing a hermetically sealed container using only a plastic material or mixing a zeolite only with a plastic material, the effect of simultaneously removing ethylene and carbon dioxide is achieved . Also, in the case of producing a hermetically sealed container made of plastic with the zeolite being the most preferable range being 8.4 to 8.6 parts by weight and the pegmatite being 1.2 to 1.6 parts by weight, ethylene and carbon dioxide The effect of removing is further increased.

On the contrary, when zeolite alone is mixed with plastic materials, there is no effect of removing carbon dioxide, and the effect of removing ethylene is also significantly lower than when pegmatite is mixed or when zeolite and pegmatite are mixed together.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Example :

Example  One

An extrusion molding machine was used, which was an auto sandwich un-winder purchased from Taekwang Machinery Co., and 90 kg of polypropylene (hereinafter referred to as "PP") as a plastic material was placed therein and melted at 250 ° C with stirring. These PPs were dissolved until they became liquid, and then 3 kg of pegmatite, which is produced in Korea and commercially available, was added thereto. After the addition, the mixture was stirred at 190 ° C to 200 ° C. The stirring was performed for about 3 hours. The thus-stirred mixture was extruded and extruded through a sheet plate having a width of 60 cm and a thickness of 0.7 mm. The temperature at the time of production of the sheet plate was within 200 to 220 ° C. The sheet was produced using rollers so that a thickness of 0.7 mm could be kept constant during sheet production. The produced sheet was extruded at a temperature of 230 ° C to 280 ° C for 1 to 2 seconds to prepare a sealed container to produce a desired size and shape using an extrusion molding machine.

Example  2

An extrusion molding machine was used, which was an auto sandwich un-winder purchased from Taekwang Machinery Co., and 90 kg of PP as a plastic material was melted with stirring at 250 ° C. These PPs were dissolved until they became liquid, and then 5 kg of zeolite imported from foreign countries and 5 kg of pegmatite produced in domestic market were added thereto. After the addition, the mixture was stirred at 190 ° C to 200 ° C. The stirring was performed for about 3 hours. The thus-stirred mixture was extruded and extruded through a sheet plate having a width of 60 cm and a thickness of 0.7 mm. The temperature at the time of production of the sheet plate was within 200 to 220 ° C. The sheet was produced using rollers so that a thickness of 0.7 mm could be kept constant during sheet production. The produced sheet was extruded at a temperature of 230 ° C to 280 ° C for 1 to 2 seconds to prepare a sealed container to produce a desired size and shape using an extrusion molding machine.

Example  3

A closed vessel was prepared in the same manner as in Example 2 except that 6 kg of zeolite was used and 4 kg of pegmatite was used in Example 2.

Example  4

A hermetically sealed container was prepared in the same manner as in Example 2 except that 7 kg of zeolite and 3 kg of pegmatite were used in Example 2.

Example  5

A hermetically sealed container was prepared in the same manner as in Example 2 except that 8 kg of zeolite was used and 2 kg of pegmatite was used in Example 2.

Example  6

In Example 2, 8.6 kg of zeolite was used and 1.4 kg of pegmatite was used, to prepare a sealed container in the same manner as in Example 2 above.

Comparative Example :

Comparative Example  One

A sealed container was produced in the same manner as in Example 1 except that only the plastic PP material was used.

Comparative Example  2

A hermetically sealed container was prepared in the same manner as in Example 1, except that 5 kg of zeolite was used instead of pegmatite in Example 1.

Experimental Example :

< Experimental Example  1> Measurement of ethylene and carbon dioxide emissions from airtight containers

The fresh ginseng harvested in the sealed container was washed in a washing tank for 2 minutes. The washed ginseng was dried in a forced ventilation mode by operating a large fan. Each sealed container prepared in the manner of Example 1, Example 2, Example 3, Example 4, Example 5, Example 6, Comparative Example 1, and Comparative Example 2 contained 400 g to 500 g of fresh ginseng 3 roots. Thereafter, the lid was closed, and the emission of ethylene and carbon dioxide was measured at room temperature using gas chromatography (HP Company, 8460). The measured results are shown in Table 1 below.

According to Table 1, it was confirmed that Comparative Example 1, in which no zeolite or pegmatite was mixed, had no effect of removing ethylene and carbon dioxide. In the case of Comparative Example 2 in which only zeolite was added, only 0.02 μl / kg / kr of ethylene was removed by removing only carbon dioxide.

However, in the case of Example 1 in which pegmatite alone was added, ethylene and carbon dioxide were simultaneously removed. Also, in the case of Example 1, the amount of ethylene removal was much improved as compared with Comparative Example 2, and it was confirmed that carbon dioxide also emitted a large amount.

Also, in the case of Examples 2 to 6 in which zeolite and pegmatite were mixed together, unlike Comparative Examples 1 and 2, it was confirmed that ethylene and carbon dioxide were simultaneously removed. Further, in the case of Example 6, it was confirmed that the effect of removing ethylene and carbon dioxide was improved more than that of Example 1 in which only pegmatite was mixed. In this case, unlike Example 4 to Example 5, in which the amount of ethylene and carbon dioxide removed is different from that in the case of changing the amount of ethylene and carbon dioxide, When the mixing ratio was changed, it was confirmed that the removal amount of ethylene and carbon dioxide increased again.

< Experimental Example  2> Freshness maintenance experiment of airtight container

The fresh ginseng harvested in the sealed container was washed in a washing tank for 2 minutes. The washed ginseng was dried in a forced ventilation mode by operating a large fan. The closed containers prepared in the manner of Example 6 and Comparative Example 1 were loaded with 3 roots of fresh ginseng ranging from 400 g to 500 g per root. After that, the lid was closed and the freshness was maintained for a while at 20 ° C and 0 ° C. The experiment was carried out for 21 days at 0, 3, 6, 9, 12, 15, 18 and 21 days at 20 ℃ and 0, 15, 30, 45, , 90, and 105 days, respectively. The experimental results are shown in Tables 2 and 3 below. Specifically, Table 2 shows experimental results at 20 ° C, and Table 3 shows experimental results at 0 ° C.

As shown in Table 2, it can be seen that the case of Example 6 in which zeolite and pegmatite were mixed at a storage temperature of 20 ° C for a long period of time was much lower than that of Comparative Example 1 in which the zeolite and pegmatite were mixed.

It was also confirmed that even in the case of 0 ° C, the probability of the water loss is much lower in the case of Example 6 than in the case of Comparative Example 1.

That is, in the case of Example 6, compared with the case of Comparative Example 1 in which zeolite and pegmatite were not added at both 20 ° C and 0 ° C, the case of Example 6 successfully removed the ethylene and the carbon dioxide which cause aging and maturation of the plant, It is possible to preserve it for a longer period of time.

Therefore, it can be confirmed that ethylene and carbon dioxide are effectively released when the pegmatite is mixed with the plastic material or the zeolite and the pegmatite when the closed container is manufactured according to the present invention. As a result, the plant and the food can be preserved for a long time .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It is natural.

Claims (4)

Zeolite; Pegmatite; and plastic materials,
8.4-8.6 parts by weight of the zeolite and 1.2-1.6 parts by weight of the pegmatite were contained in 90 parts by weight of the plastic material. As a result of measurement of carbon dioxide and ethylene emission at 25 캜, 2-2.5 / / kg / 65 ppm ethylene. &Lt; / RTI &gt; The method according to claim 1, wherein the plastic material comprises at least one member selected from the group consisting of polypropylene (PP), polyvinylpyrrolidone (PVP), polyvinyl chloride (PVC) Plastic containers made of airtight containers. Melting the plastic material to be in a liquid state;
Adding zeolite and pegmatite to the liquid plastic material and stirring to prepare a mixture;
Preparing an injection molding of the mixture; And
And extruding the injection product to manufacture a container,
8.4-8.6 parts by weight of the zeolite and 1.2-1.6 parts by weight of the pegmatite relative to 90 parts by weight of the plastic material,
Carbon dioxide and ethylene emission at 25 占 폚 were measured. As a result, it was found that a method of producing a plastic container made of plastic that releases 2 to 2.5 占 / / kg / hr of carbon dioxide and 55 to 65 ppm of ethylene. The method of claim 3, wherein the plastic material comprises at least one member selected from the group consisting of polypropylene (PP), polyvinylpyrrolidone (PVP), polyvinyl chloride (PVC) Wherein the plastic container is a plastic container.

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