KR20000063755A - Manufacturing method of plastic container having charcoal and a container thereby - Google Patents
Manufacturing method of plastic container having charcoal and a container thereby Download PDFInfo
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- KR20000063755A KR20000063755A KR1020000044799A KR20000044799A KR20000063755A KR 20000063755 A KR20000063755 A KR 20000063755A KR 1020000044799 A KR1020000044799 A KR 1020000044799A KR 20000044799 A KR20000044799 A KR 20000044799A KR 20000063755 A KR20000063755 A KR 20000063755A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/10—Extrusion moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
Abstract
Description
본 발명은 숯을 함유한 플라스틱 용기의 제조방법 및 그 용기에 관한 것으로서, 보다 상세하게는 항균, 살균, 중금속제거 효과를 가지는 숯이 함유된 복합소재를 이용하여 음식물이나 음료수를 보관하는 다양한 용기를 제조하기 위한 숯을 함유한 플라스틱 용기의 제조방법 및 그 용기에 관한 것이다.The present invention relates to a method for manufacturing a plastic container containing charcoal and a container thereof, and more specifically, to a variety of containers for storing food or drink using a composite material containing charcoal having an antibacterial, antiseptic, heavy metal removal effect. It relates to a method for producing a plastic container containing charcoal for production and to a container thereof.
일반적으로 범용 플라스틱인 폴리프로필렌이나 폴리에틸렌수지 등은 어느 정도 강도가 보장되면서 가격도 저렴하여 찬합, 물통, 음료수통 등 각종 음식물을 보관하는 용기의 제조에 널리 이용되고 있다.In general, polypropylene or polyethylene resins, which are general-purpose plastics, are widely used in the manufacture of containers for storing various foods such as cups, buckets, beverage bottles, etc., because they have a certain strength and low price.
최근에는 건강에 대한 관심이 고조되면서 이러한 범용합성수지에 황토, 맥반석 등과 같은 역간의 기능성 첨가물을 부가한 수지를 이용하여 원적외선 효과를 겸한 음식물 보관용 용기를 제조하기도 한다.Recently, with increasing interest in health, a food storage container having a far infrared ray effect may be manufactured using a resin in which functional additives such as ocher and elvan are added to such general-purpose synthetic resins.
이와 같은 일반적인 범용합성수지로 음식물 보관용 용기를 제조하는 경우 항균, 살균 및 중금속 제거효과가 없는 것은 물론 일부 범용합성수지에서는 환경호르몬이 발생되고 심하면 악취도 발생한다.When manufacturing a food storage container with such a general purpose synthetic resin, there is no antibacterial, antiseptic and heavy metal removal effect, as well as some environmental hormones and severe odors occur in some general purpose synthetic resins.
또한 각종 전자제품이 생활필수품화 되고 있는 현실에서 전자파에 의한 음식물 오염도가 높은 것을 방지할 수 없다.In addition, it is not possible to prevent the high pollution of food by electromagnetic waves in the reality that various electronic products are becoming a necessity of life.
그러므로 본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로서, 항균, 살균, 중금속제거 효과를 가지는 숯이 함유된 복합소재를 이용하여 음식물이나 음료수를 보관하는 다양한 용기를 제조하기 위한 숯을 함유한 플라스틱 용기의 제조방법 및 그 용기를 제공한다.Therefore, an object of the present invention is to solve the above problems, by using a composite material containing charcoal having an antibacterial, antiseptic, heavy metal removal effect containing plastics for manufacturing various containers for storing food or beverages Provided are a method for producing a container and a container.
또한 전자제품에서 발생하는 전자파를 차단하여 음식물의 전자렌지 사용시 오염을 방지하는 것을 목적으로 한다.In addition, it aims to prevent contamination when using a microwave oven of food by blocking the electromagnetic waves generated from electronic products.
또한 숯과 범용수지가 혼합된 복합수지의 성형가능한 숯의 농도를 결정하고 숯과 범용수지가 잘 혼합되고 제품의 수명을 최대로 하는 것을 목적으로 한다.In addition, the purpose of determining the concentration of the moldable charcoal of the composite resin mixed with charcoal and general purpose resin, and the charcoal and general purpose resin is well mixed and the life of the product is maximized.
또한 숯이 범용수지에 포함됨에 따른 재료의 기계적 물성저하를 억제할 수 있는 숯 분말의 크기를 결정하는 것을 목적으로 한다.In addition, the purpose of determining the size of the charcoal powder that can suppress the mechanical properties of the material as the charcoal is included in the general purpose resin.
도 1은 본 발명에 따른 용기를 부분 확대하여 나타내는 구성도,1 is a block diagram showing a partially enlarged container according to the present invention,
도 2는 본 발명에 따른 제조시 숯 첨가량에 따른 작업성을 나타내는 그래프,2 is a graph showing the workability according to the amount of charcoal added during manufacture according to the present invention,
도 3은 본 발명에 따른 용기와 일반용기의 부패방지 효과를 비교한 그래프,3 is a graph comparing the anti-corruption effect of the container and the general container according to the present invention,
도 4는 본 발명에 따른 용기와 일반용기의 항균 및 살균 효과를 비교한 그래프,4 is a graph comparing the antimicrobial and bactericidal effects of the container and the general container according to the present invention;
도 5는 본 발명에 따른 용기와 일반용기의 중금속제거 효과를 비교한 그래프,5 is a graph comparing the heavy metal removal effect of the container and the general container according to the present invention,
도 6은 본 발명에 따른 용기와 일반용기의 원적외선 효과를 비교한 그래프,6 is a graph comparing the far-infrared effect of the container and the general container according to the present invention,
도 7은 숯 분말 입자의 크기에 따른 성형성을 비교하여 나타내는 그래프,7 is a graph showing the comparison of the formability according to the size of the charcoal powder particles,
도 8은 숯의 함량에 따른 세균감소율을 비교하여 나타내는 그래프.8 is a graph showing a comparison of bacterial reduction rate according to the content of charcoal.
이러한 목적을 달성하기 위해 본 발명은 숯을 20 ㎛ 이하 직경의 아주 작은 미세 분말로 만드는 제 1 단계; 숯과 범용수지의 혼합 복합재료가 성형성을 보장하도록 소정의 부피비율로 계량하는 제 2 단계; 범용수지와 숯이 잘 혼합되도록 기계를 이용하여 혼합하는 제 3 단계; 및 상기 혼합된 수지를 이용하여 음식물 보관용 용기를 성형하는 제 4 단계를 포함하여 이루어지는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a method for producing charcoal, comprising: a first step of making charcoal into a very fine powder having a diameter of 20 μm or less; A second step of weighing the mixed composite material of charcoal and general purpose resin at a predetermined volume ratio to ensure moldability; A third step of mixing by using a machine such that the general purpose resin and charcoal are well mixed; And a fourth step of forming a container for storing food using the mixed resin.
이때 상기 제 2 단계에서 숯의 부피비율은 1∼40%로 유지하는 것을 특징으로 한다.At this time, the volume ratio of the char in the second step is characterized in that it is maintained at 1 to 40%.
한편 본 발명의 다른 형태로, 상기 제 1 항의 방법에 의하여 제조된 숯을 함유한 플라스틱 용기를 제공한다.On the other hand, in another aspect of the present invention, there is provided a plastic container containing the char produced by the method of claim 1.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.
본 발명의 제 1 단계로 숯이 범용수지와 컴파운딩될 때 기계적 물성이 저하되지 않고 재료의 기계적 물성을 유지하도록 하기 위하여 숯을 아주 작은 미세 분말로 만든다. 이때 숯분말의 직경은 작을수록 유리하지만 성형비의 상승요인이 되므로 20 ㎛ 이하로 하는 것이 바람직하다. 숯은 항균 및 살균효과가 탁월한 참숯을 사용하는 것이 바람직하다.In the first step of the present invention, when the char is compounded with the general-purpose resin, the char is made into a very fine powder in order to maintain the mechanical properties of the material without deteriorating the mechanical properties. At this time, the smaller the diameter of the charcoal powder is advantageous, but it is preferable that the diameter of the charcoal powder be 20 μm or less, since it is a rising factor of the molding ratio. Charcoal is preferably used charcoal excellent antibacterial and antiseptic effect.
본 발명의 제 2 단계로 숯과 범용수지의 혼합 복합재료가 성형을 위해서 필요한 소정의 부피비율을 유지하도록 계량한다. 바람직한 숯의 함량은 최대 40%이고 최소 1%이다. 부피비율 함유량이 1%이하로 되면 본 발명에서 목적으로 하는 숯의 효과를 얻기 어려워지는 반면 성형성은 향상된다. 숯의 상한 함량범위 40%는 후술하는 도 2의 설명을 참조한다.In the second step of the present invention, the mixed composite material of charcoal and general purpose resin is weighed to maintain a predetermined volume ratio necessary for molding. Preferred content of charcoal is at most 40% and at least 1%. When the volume ratio content is 1% or less, it becomes difficult to obtain the effect of charcoal as the object of the present invention, while the moldability is improved. 40% of the upper limit of the content of charcoal refer to the description of FIG.
본 발명의 제 3 단계로 범용수지와 숯이 잘 혼합되도록 컴파운딩 기계를 이용하여 혼합한다. 혼합시의 온도, 혼합 rpm 등의 조건에는 그다지 제약이 없으며 사용 합성수지에 따르는 균일한 혼합 상태를 이루는 시간을 실험적으로 측정하여 양산시 표준 공정시간으로 정한다.In the third step of the present invention, the compounding machine is mixed using a compounding machine so that the general purpose resin and charcoal are well mixed. There are no restrictions on the conditions of mixing temperature, mixing rpm, etc., and determine the standard process time in mass production by experimentally measuring the time to achieve a uniform mixing state according to the synthetic resin used.
본 발명의 제 4 단계로 컴파운딩된 수지를 이용 음식물 보관용 용기 및 물병을 제조한다. 이때 숯의 효과를 극대화하기 위해 용기 또는 물병의 안쪽에 약간 거친 표면을 유지하는 것이 유리하다. 표면 요철의 높낮이가 클수록 참숯의 효과 면에서는 유리하지만 제조공정에서 성형성이 불량해지고 용기의 사용 중에 세척이 청결해지지 않을 우려가 있으므로 이 또한 실험적으로 산출하여 표준으로 정한다.Using the resin compounded in the fourth step of the present invention to prepare a food storage container and a water bottle. At this time, it is advantageous to maintain a slightly rough surface inside the container or water bottle in order to maximize the effect of the charcoal. The higher the height of the surface irregularities, the more advantageous in terms of the effect of the charcoal, but there is a risk of poor moldability in the manufacturing process and cleaning may not be clean during the use of the container, this is also experimentally calculated and set as the standard.
도 1은 이와 같은 공정으로 제조된 음식물 및 음료수의 용기의 일 예를 나타내고 그에 대한 조직상태를 부분 확대도로 예시한다. 용기에 함유된 숯이 음식물과 직간접적으로 접촉함으로써 살균, 항균 및 중금속 제거효과를 가지고 범용수지에서 발생하는 환경호르몬과 악취의 발생을 억제할 수 있다. 또한 용기 밖에서 유발되는 전자파를 차단하여 음식물의 오염을 방지할 수 있다.Figure 1 shows an example of a container of food and beverages prepared by such a process and illustrates the tissue state thereof in a partial enlarged view. The charcoal contained in the container can be directly or indirectly contacted with food to have the effect of disinfection, antibacterial and heavy metals and to suppress the occurrence of environmental hormones and odors generated from general purpose resins. In addition, it can prevent the contamination of food by blocking the electromagnetic waves generated outside the container.
도 2는 본 발명에 따른 제조시 숯 첨가량에 따른 작업성을 나타내는 그래프가 도시된다.Figure 2 is a graph showing the workability according to the amount of charcoal added during manufacture according to the present invention.
도 2는 숯이 함유된 복합수지를 이용하여 블로우성형(Blow molding)에 의해 용기를 생산했을 때의 최적의 성형속도를 조사한 것이다. 숯의 함유량이 증가할수록 성형성이 약간 저하하다가 40% 이상에서는 급격히 성형성이 저하되어 거의 제품으로써 성형하기가 어려워졌다. 그러므로 숯 용기 제작을 위해서는 40% 이하의 숯 함유량을 가져야 한다.Figure 2 is an investigation of the optimum molding speed when producing a container by blow molding using a composite resin containing char. As the content of the charcoal increased, the moldability slightly decreased, but at 40% or more, the moldability rapidly decreased, making it difficult to mold almost as a product. Therefore, the charcoal container must have a charcoal content of 40% or less.
도 3은 본 발명에 따른 용기와 일반용기의 부패방지 효과를 비교한 그래프가 도시된다.Figure 3 is a graph comparing the anti-corruption effect of the container and the general container according to the present invention.
일반 플라스틱 물통과 숯이 함유된 물통에 동일 생수 500㎖를 넣고 상온에서 보관 후 물 속의 대장균, 분원선 연쇄상구균, 녹농균 등과 같은 세균의 검출여부를 6시간마다 측정하였다. 그 결과 일반용기는 3일 후 검출되었고 숯 용기는 평균 4.5일 후에 검출되었다.500 ml of the same bottled water was put in a plastic bucket and a bucket containing charcoal, and stored at room temperature. Then, the bacteria were detected every 6 hours, such as Escherichia coli, secretory streptococci, and Pseudomonas aeruginosa. As a result, the general container was detected after 3 days and the charcoal container was detected after 4.5 days on average.
도 4는 본 발명에 따른 용기와 일반용기의 항균 및 살균 효과를 비교한 그래프가 도시된다.Figure 4 is a graph comparing the antimicrobial and bactericidal effect of the container and the general container according to the present invention.
일반 플라스틱 용기와 숯이 함유된 용기에 물을 채우고 일정량의 대장균을 넣었다. 25℃ 온도에서 1일 동안 유지한 후 대장균 수를 파악하여 일반 플라스틱 용기와 숯이 함유된 용기의 비율을 구했다. 검사결과 일반용기의 대장균 수를 100으로 할 때 숯이 함유된 용기의 대장균 수는 75.8%로서 약 24.2% 정도 균의 수가 저하되었다.General plastic containers and containers containing charcoal were filled with water and a certain amount of E. coli was added. After keeping at 25 ° C. for 1 day, E. coli counts were used to determine the ratio of ordinary plastic containers and charcoal containers. As a result of the test, when the number of Escherichia coli in the general container is 100, the number of Escherichia coli in the container containing charcoal is 75.8%, which is about 24.2%.
도 5는 본 발명에 따른 용기와 일반용기의 중금속제거 효과를 비교한 그래프가 도시된다.5 is a graph comparing the heavy metal removal effect of the container and the general container according to the present invention.
숯 용기의 중금속 제거효과의 측정은 일반용기와 숯 용기에 1 PPM의 카드늄 중금속을 넣고 상온에서 7일 보관 후 ICP-AES(유도플라즈마-원자 발광 분광법)으로 중금속 함유량을 측정하였다. 일반용기에서는 약 0.79 PPM이 검출되었고 숯이 함유한 용기에서는 0.14 PPM의 중금속이 검출되어 일반용기에 비해 0.65 PPM의 중금속 함유량이 더 줄어들었다.In order to measure the heavy metal removal effect of the charcoal container, 1 PPM of cadmium heavy metal was placed in a general container and a charcoal container, and stored at room temperature for 7 days, and the heavy metal content was measured by ICP-AES (inductive plasma-atomic emission spectroscopy). About 0.79 PPM was detected in the general container, and 0.14 PPM of heavy metal was detected in the container containing charcoal, which reduced the heavy metal content of 0.65 PPM more than the general container.
도 6은 본 발명에 따른 용기와 일반용기의 원적외선 효과를 비교한 그래프가 도시된다.6 is a graph comparing the far-infrared effect of the container and the general container according to the present invention.
도 6에서, 채소의 신선도 측정을 위해 동일 채소(배추)를 용기에 넣고 냉장고에 3일 동안 보관 후 채소의 신선도 측정을 위하여 시각검사와 함께 채소의 수분 함유량을 측정하였다. 측정결과에 따르면 일반 용기 속의 채소의 수분함유량을 100으로 할 때 숯 용기속의 채소의 수분 함유량은 112%로서 숯 용기가 일반 플라스틱 용기에 비해 약 12% 많이 함유하고 있음을 나타냈다.In FIG. 6, the same vegetables (cabbage) were placed in a container for measuring the freshness of the vegetables, and stored in the refrigerator for 3 days, and the moisture content of the vegetables was measured together with visual inspection for measuring the freshness of the vegetables. According to the measurement results, when the water content of the vegetables in the general container is 100, the water content of the vegetables in the charcoal container is 112%, indicating that the charcoal container contains about 12% more than the general plastic container.
도 7은 숯 분말 입자의 크기에 따른 성형성을 비교하여 나타내는 그래프이고, 도 8은 숯의 함량에 따른 세균감소율을 비교하여 나타내는 그래프이다.Figure 7 is a graph showing the comparison of the moldability according to the size of the charcoal powder particles, Figure 8 is a graph showing a comparison of the bacterial reduction rate according to the content of the charcoal.
실험에 사용된 용기의 크기는 밑면의 지름이 140mm 이고, 높이는 57 mm이고, 두께가 2 mm인 원형의 용기를 사출성형으로 제작 실험하여 도 7과 같은 결과를 산출하였다. 도 7에서, 입자의 크기가 증가함에 따라서 점도의 증가 및 표면의 거칠기가 증가하고 쇼트샷(short shot)과 같은 현상이 발생함으로 인하여 입자가 커짐에 따라서 성형성이 저하되었다. 숯 분말의 함유량에 따른 재료의 성형성 비교를 위하여 숯이 함유되지 않은 수지의 사출성형에 의한 시간당 생산할 수 있는 성공적인 제품수를 100%라 했을 때 숯 분말 입자의 크기가 변함에 따른 성공적인 제품의 수의 비율을 성형성으로 정의한다.The size of the container used in the experiment was 140mm in the bottom diameter, 57mm in height, 2mm thick circular container was produced by injection molding experiments and the results as shown in FIG. In FIG. 7, as the size of the particles increases, the moldability decreases as the particles become larger due to an increase in viscosity and surface roughness and a phenomenon such as a short shot. For the comparison of formability of materials according to the content of charcoal powder, when the number of successful products that can be produced per hour by injection molding of non-charcoal resin is 100% The ratio of is defined as moldability.
항균실험을 위하여 가압밀착법을 이용하여 세균 감소율을 측정하였다. 시험균액을 25℃에서 24시간 정치 배양후 균수를 측정하였으며, 시료 면적은 60㎠로 하였고 사용 공시균주는 에서리치아 콜리(Escherichia coli) ATCC 25922이다. 도 8은 숯의 함유량에 따른 세균 감소율을 보인다. 숯의 함유량이 증가함에 따라서 세균 감소율은 증가하나 도 2와 도7에서 나타난 성형성과의 관계를 고려할 때 숯 함량 1-40%인 범위에서 용기를 제작하는 것이 적절하다.For antimicrobial experiments, the bacterial reduction rate was measured using a pressure bonding method. The bacteria were measured after standing for 24 hours at 25 ° C., and the number of cells was 60 cm 2. The used strain was Escherichia coli ATCC 25922. 8 shows the bacterial reduction rate according to the content of charcoal. As the content of charcoal increases, the bacterial reduction rate increases, but considering the relationship between moldability shown in FIGS. 2 and 7, it is appropriate to manufacture a container in a range of 1-40% of charcoal content.
본 발명은 이러한 합성수지를 실시예로 들었으나 합성섬유, 합성고무 등의 다른 합성분자를 사용한 제품에도 용이하게 응용하는 것이 가능하다.In the present invention, the synthetic resin is mentioned as an example, but it can be easily applied to products using other synthetic molecules such as synthetic fibers and synthetic rubber.
즉 음식물 보관용기 및 음료수용 보관 물병 뿐 아니라 젖병, 우유팩 코팅수지, 냉장고 컨테이너 박스 등에도 적용하는 것이 가능하고, 음식물과 무관한 각종 제품의 케이싱이나 부품 소재로 사용할 수도 있다.That is, it is possible to apply not only food storage containers and drinking water storage bottles, but also feeding bottles, milk pack coating resins, refrigerator container boxes, and the like, and may be used as casings or parts of various products irrelevant to food.
이상의 구성 및 작용에 의하면 본 발명은 항균, 살균, 중금속제거 효과를 가지는 숯이 함유된 복합소재를 이용하여 음식물이나 음료수를 보관하는 다양한 용기를 제조하는 효과가 있다.According to the above configuration and action, the present invention has the effect of producing a variety of containers for storing food or drink using a composite material containing charcoal having antibacterial, antiseptic, heavy metal removal effect.
본 발명은 기재된 실시예에 한정되는 것은 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서 그러한 변형예 또는 수정예들은 본 발명의 특허청구범위에 속한다 해야 할 것이다.It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.
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| KR20030012511A (en) * | 2001-08-01 | 2003-02-12 | 정몽선 | A method of manufacturing plastic goods including charcoal and goods thereof |
| KR100449866B1 (en) * | 2001-11-08 | 2004-09-22 | 이성춘 | Polystyrene and polyethylens packing bag a manufacturing process of adding charcoal powder |
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| JPH1148303A (en) * | 1997-07-31 | 1999-02-23 | Ekoro Pack:Kk | Molding material, applied article thereof and manufacturing device therefor |
| KR19990046800A (en) * | 1999-04-28 | 1999-07-05 | 염종무 | Plastic vessel containing charcoal powder |
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| KR20030012511A (en) * | 2001-08-01 | 2003-02-12 | 정몽선 | A method of manufacturing plastic goods including charcoal and goods thereof |
| KR100449866B1 (en) * | 2001-11-08 | 2004-09-22 | 이성춘 | Polystyrene and polyethylens packing bag a manufacturing process of adding charcoal powder |
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