KR200355572Y1 - Paper board for packing using recycled paper with activated carbon - Google Patents
Paper board for packing using recycled paper with activated carbon Download PDFInfo
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- KR200355572Y1 KR200355572Y1 KR20-2004-0010992U KR20040010992U KR200355572Y1 KR 200355572 Y1 KR200355572 Y1 KR 200355572Y1 KR 20040010992 U KR20040010992 U KR 20040010992U KR 200355572 Y1 KR200355572 Y1 KR 200355572Y1
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- activated carbon
- paper
- recycled
- packaging
- cardboard
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/26—All layers being made of paper or paperboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2317/00—Animal or vegetable based
- B32B2317/12—Paper, e.g. cardboard
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- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
본 고안은 재생 활성카본지를 이용한 포장용 판지에 관한 것으로, 더욱 상세하게는 재생펄프를 이용하여 재생 활성카본지를 제조하고, 이를 이용하여 포장용 판지를 제조함으로써, 재생펄프와 재생지를 이용하여 제조원가를 저렴하게 할 수 있음은 물론, 활성탄의 우수한 유해가스 흡착력과 활성탄으로부터 발생되는 음이온 및 원적외선으로 인해, 식품과 꽃의 신선도를 더욱 우수하게 하여, 식품과 꽃의 보존기간을 연장 할 수 있도록 하고, 전자제품을 포장할 시에는 정전기를 방지할 수 있도록 한 것으로, 종이섬유(12)에 활성탄(11)이 균일하게 내첨되어 이루어진 재생 활성카본지(1)의 하면에 재생지(2)가 합지되어 이루어진 것을 특징으로 한다.The present invention relates to a packaging cardboard using a recycled activated carbon paper, more specifically, to a recycled activated carbon paper using a recycled pulp, and to manufacturing a packaging cardboard using this, by using recycled pulp and recycled paper at a low manufacturing cost In addition, due to the excellent adsorption of harmful gases of activated carbon and anion and far infrared rays generated from activated carbon, the freshness of food and flowers can be improved, and the shelf life of food and flowers can be extended and electronic products can be extended. To prevent static electricity during packaging, the recycled paper 2 is laminated on the lower surface of the regenerated activated carbon paper 1 in which the activated carbon 11 is uniformly embedded in the paper fiber 12. .
Description
본 고안은 재생 활성카본지를 이용한 포장용 판지에 관한 것으로, 더욱 상세하게는 재생펄프를 이용하여 재생 활성카본지를 제조하고 이를 이용하여 포장용 판지를 제조함으로써, 재생펄프와 재생지를 이용하여 제조원가를 저렴하게 할 수 있음은 물론, 활성탄의 우수한 유해가스 흡착력과 활성탄으로부터 발생되는 음이온 및 원적외선으로 인해, 식품과 꽃의 신선도를 더욱 우수하게 하여, 식품과 꽃의 보존기간을 연장 할 수 있도록 하고, 전자제품을 포장할 시에는 정전기를 방지할 수 있도록 한 것이다.The present invention relates to a packaging cardboard using a recycled activated carbon paper, and more particularly, to manufacture a recycled activated carbon paper using recycled pulp and to produce a packaging cardboard using the same, to reduce the manufacturing cost using recycled pulp and recycled paper Of course, due to the excellent adsorption of harmful gases of activated carbon and anion and far-infrared rays generated from activated carbon, the freshness of food and flowers can be improved, and the shelf life of food and flowers can be extended, and the packaging of electronic products When you do it is to prevent static electricity.
일반적으로 과일, 채소, 곡물 등의 식품과 꽃, 전자제품은 일반적인 포장지, 골판지 상자 등에 포장되어 유통되고 있으나, 과일, 채소, 곡물 등의 식품은 장기간 보관될 시 포장지 또는 포장박스 내에서 신선도가 저하되어 제품의 부가가치를 떨어뜨리게 되었으며, 꽃 역시 마찬가지로 포장박스 내에서 시들게 되어 소비자에게 호감을 주지 못하게 되는 경우가 빈번히 발생되었고, 전자제품은 정전기의 계속적인 발생으로 취급이 용이하지 못한 문제점이 있었다.Generally, foods such as fruits, vegetables, grains, flowers, and electronics are packaged and distributed in general packaging, cardboard boxes, etc.However, foods such as fruits, vegetables, grains, etc., lose their freshness in the packaging or box when stored for a long time. As a result, the added value of the product was lowered, and the flowers were also wilted in the packaging box, which often caused the consumer to be unfavorable, and the electronic products were not easily handled due to the continuous generation of static electricity.
이러한 문제점을 해결하기 위하여, 유해물질을 흡착할 수 있는 활성카본지를 포장지로 이용하는 방법이 제안되었으나, 활성카본지는 포장시 포장제품의 외면에 활성탄이 묻어나는 경우가 빈번히 발생하여 제품의 외관을 손상시킬 뿐만 아니라, 손에도 계속적으로 활성탄이 묻어나 포장이 용이하지 못함은 물론 운반에도 불편을 주는 문제점이 발생되었다.In order to solve this problem, a method of using an activated carbon paper capable of adsorbing harmful substances has been proposed as a packaging paper, but an activated carbon paper frequently causes an appearance of activated carbon on the outer surface of the packaged product, thereby damaging the appearance of the product. In addition, the activated carbon continuously buried in the hand, the packaging is not easy, as well as the inconvenience caused to transport has occurred.
따라서, 본 고안의 목적은 활성탄이 포장제품이나 손에 묻어 포장이 용이하지 못했던 종래의 포장지가 지닌 제반 문제점을 해결하기 위하여, 유해물질의 흡착성능을 갖는 재생 활성카본지의 일면 또는 양면에 재생지를 합지시킴으로써, 과일, 채소, 곡물 등의 식품과 꽃의 포장제품에 활성탄이 묻어나지 않도록 하고, 탈취 및 항균효과를 갖도록 하여 포장물을 개봉할 때 산화시 발생되는 에틸렌 가스 등을 흡착하며, 활성탄으로부터 발생되는 음이온 및 원적외선으로 인해 과일, 채소, 곡물등의 식품과 꽃의 신선도를 더욱 우수하게 하여, 보존기간을 연장 할 수 있도록 하고, 전자제품 포장시 정전기 발생을 방지하도록 하는 재생 활성카본지를 이용한 포장용 판지를 제공함에 있다.Accordingly, an object of the present invention is to recycle the recycled paper on one side or both sides of the recycled activated carbon paper having the adsorption performance of harmful substances in order to solve all the problems of the conventional packaging paper, which was not easy to wrap because activated carbon is in the packaged products or hands. This prevents activated carbon from appearing on food and flower packaging products such as fruits, vegetables, grains, etc., and has deodorization and antibacterial effects, so as to adsorb ethylene gas generated during oxidation when the package is opened. The packaging cardboard using recycled activated carbon paper can be used to improve the freshness of foods and flowers such as fruits, vegetables, grains, and flowers due to the anion and far-infrared rays. In providing.
도 1은 본 고안에 의한 포장용 판지의 사시도.1 is a perspective view of a cardboard for packaging according to the present invention.
도 2는 본 고안에 의한 포장용 판지의 단면도.Figure 2 is a cross-sectional view of the cardboard for packaging according to the present invention.
도 3은 본 고안의 다른 실시예에 의한 포장용 판지의 사시도3 is a perspective view of a packaging cardboard according to another embodiment of the present invention
도 4는 본 고안의 다른 실시예에 의한 포장용 판지의 단면도.Figure 4 is a cross-sectional view of the packaging cardboard according to another embodiment of the present invention.
* 도면의 주요부분에 대한 부호의 설명** Explanation of symbols for the main parts of the drawings *
1: 활성카본지 11: 활성탄 12: 종이섬유1: activated carbon 11: activated carbon 12: paper fiber
2: 재생지2: recycled paper
상기한 목적을 달성하기 위한 본 고안의 재생 활성카본지를 이용한 포장용 판지는, 종이섬유(12)에 활성탄(11)이 균일하게 내첨되어 이루어진 재생 활성카본지(1)의 하면에 재생지(2)가 합지되어 이루어진 것을 특징으로 한다.Packaging cardboard using the recycled activated carbon paper of the present invention for achieving the above object, the recycled paper (2) is laminated on the bottom surface of the recycled activated carbon paper (1) made of the activated carbon 11 uniformly embedded in the paper fiber 12 Characterized in that made.
또한, 상기 재생 활성카본지(1)의 상면에 재생지(2)가 추가로 합지되어 이루어진 것을 특징으로 한다.In addition, it is characterized in that the recycled paper 2 is further laminated on the upper surface of the regenerated active carbon paper (1).
그리고, 상기 재생 활성카본지(1)는 재생펄프에 활성탄이 혼합되어 이루어지는 것을 특징으로 한다.The regenerated activated carbon 1 is characterized in that the activated carbon is mixed with the regenerated pulp.
이하, 본 고안이 속하는 기술분야에서 통상의 지식을 가진자가 본 고안을 용이하게 실시할 수 있을 정도로, 본 고안의 바람직한 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention.
도 1은 본 고안에 의한 포장용 판지의 사시도이고, 도 2는 본 고안에 의한 포장용 판지의 단면도이며, 도 3은 본 고안의 다른 실시예에 의한 포장용 판지의 사시도이고, 도 4는 본 고안의 다른 실시예에 의한 포장용 판지의 단면도이다.1 is a perspective view of a packaging cardboard according to the present invention, Figure 2 is a cross-sectional view of the packaging cardboard according to the present invention, Figure 3 is a perspective view of a packaging cardboard according to another embodiment of the present invention, Figure 4 is another of the present invention It is sectional drawing of the cardboard for packaging by an Example.
먼저, 도 1과 도 2에서 알 수 있는 바와 같이 본 고안에 의한 포장용 판지는, 재생 활성카본지(1)와 재생지(2)가 합지되어 이루어지는 것인 바, 포장시 손에 활성탄이 묻어나지 않도록 하기 위해, 재생 활성카본지(1)의 하면에 재생지(2)를합지시켜, 포장이 용이하면서도 통풍, 제습, 탈취 및 항균효과는 물론 유해물질 흡착효과를 갖도록 하는 것이다.First, as can be seen in Figures 1 and 2, the cardboard for packaging according to the present invention, the recycled activated carbon paper (1) and the recycled paper (2) is made of a laminated bar, so that activated carbon does not stick to the hands during packaging For this purpose, the recycled paper 2 is laminated on the lower surface of the regenerated activated carbon paper 1 so that the packaging is easy and the ventilation, dehumidification, deodorization and antibacterial effects as well as the adsorption of harmful substances.
상기 재생 활성카본지(1)는, 종이섬유(12) 사이에 활성탄(11)이 균일하게 내첨되어 이루어지는 것으로, 활성탄(11)이 갖는 통풍, 제습, 탈취, 항균, 유해물질 흡착, 원적외선 방사 등의 효과를 재생 활성카본지(1)가 갖게 된다.The regenerated activated carbon paper 1 is formed by uniformly incorporating activated carbon 11 between the paper fibers 12. The activated carbon 11 has ventilation, dehumidification, deodorization, antibacterial activity, adsorption of harmful substances, far-infrared radiation, and the like. The regeneration activated carbon paper 1 has an effect.
상기 재생지(2)는 버려지는 폐지를 풀어 다시 만든 것으로, 라이너원지, 백판지 등을 포함하는 것은 물론이며, 그 두께 등을 한정하는 것은 아니고, 재생지(2)의 사용으로 판지의 생산원가를 저렴하게 함은 물론 폐자원의 이용할 수 있게 되어 환경오염의 방지 등의 효과를 가져올 수 있는 것이다.The recycled paper 2 is made of unwrapped waste paper and made again, and of course, it does not include liner paper, white paper, etc., and does not limit the thickness thereof. Of course, the waste resources can be used to bring about effects such as prevention of environmental pollution.
상기 재생 활성카본지(1)와 재생지(2)의 합지방법은, 이미 알려지 통상의 방법을 이용하는 것으로, 별도의 접착제를 이용하여 합지할 수도 있고, 가열가압하여 합지할 수도 있는 것으로 그 방법을 제한하지 않는다.The method of laminating the regenerated activated carbon paper 1 and the recycled paper 2 is a known method, and may be laminated using a separate adhesive or may be laminated by heating and pressing. Do not.
이하, 본 고안의 구성요소인 재생 활성카본지(1)에 대해 상세히 설명하면 다음와 같다.Hereinafter, the regeneration active carbon paper 1 which is a component of the present invention will be described in detail.
상기 재생 활성카본지(1)는, 재생펄프 20∼90중량%에 활성탄 10∼80중량%를 혼합하여 제조되는 것으로, 종이섬유(12) 사이에 내첨된 활성탄(11)의 효과로 인해 통풍, 제습, 탈취 및 항균효과는 물론 유해물질 흡착효과를 갖도록 하는 것이다.The regenerated activated carbon paper 1 is prepared by mixing 10 to 80% by weight of activated carbon with 20 to 90% by weight of recycled pulp, and is ventilated and dehumidified due to the effect of the activated carbon 11 embedded between the paper fibers 12. In addition to the deodorizing and antibacterial effect, it is to have the adsorption of harmful substances.
이때, 상기 활성탄(11)이 10중량% 미만이면 활성탄의 효과가 미미하게 되고, 80중량%를 초과하면 과량이되어 활성카본지의 제조가 용이하지 않으므로, 재생펄프 20∼90중량%에 활성탄 10∼80중량%를 혼합하여서 제조한다.At this time, if the activated carbon 11 is less than 10% by weight, the effect of activated carbon is insignificant, and if it exceeds 80% by weight, the activated carbon is not easy to manufacture. It is prepared by mixing 80% by weight.
상기 펄프로는, 재생펄프를 이용하여 자원 재활용은 물론 환경오염을 방지할 수 있는 것이다.The pulp is to recycle resources as well as to prevent environmental pollution.
상기 활성탄(11)은, 목재(wood base), 역청탄(bituminous coal) 등을 불연소화합방식인 수증기부활법으로 활성화시켜 제조되어 흡착에 관여하는 세공이 미세공으로 형성되는 것으로, 약 1000㎡/g에 이르며 비표면적과 계속적인 산화 및 환원반응으로 인해 우수한 흡착성능은 물론 통풍, 제습, 탈취 및 항균효과를 갖는다.The activated carbon 11 is manufactured by activating a wood base, bituminous coal, etc. by steam regeneration of a non-combustion compound type to form pores involved in adsorption as fine pores, about 1000 m 2 / g Due to the specific surface area and continuous oxidation and reduction, it has excellent adsorption performance as well as ventilation, dehumidification, deodorization and antibacterial effects.
또한, 활성탄(11)은 200∼325 mesh의 것을 사용하여 초지에 용이하도록 하며, 활성탄이 200mesh 미만이면 종이섬유 사이에 내첨되기 어렵고, 325 mesh을 초과하면 비산되어 취급이 불편하므로, 200∼325 mesh의 것을 사용하도록 하며, 그 요오드 흡착력은 950∼1100mg/g이 되도록 한다.In addition, activated carbon 11 is easy to use in papermaking using 200 to 325 mesh. If activated carbon is less than 200 mesh, it is difficult to be interposed between paper fibers. It is to be used, the iodine adsorption force is to be 950 ~ 1100mg / g.
또한, 도 3과 4에서 알 수 있는 바와 같이, 본 고안의 판지(A)의 하면에 재생지(2)를 추가로 합지하면, 재생 활성카본지(1) 내에 내첨되는 활성탄(11)의 배합비를 더 늘릴 수 있는 것은 물론, 포장시 포장제품 뿐 아니라 손에 활성탄이 묻어나는 것 또한 방지할 수 있다.3 and 4, when the recycled paper 2 is further laminated on the lower surface of the cardboard A of the present invention, the mixing ratio of the activated carbon 11 embedded in the recycled activated carbon paper 1 is further increased. Not only can it increase, it also prevents the appearance of activated carbon in the hands as well as the packaged products.
상기 상면에 합지되는 재생지(2) 역시 그 종류를 제한하지 않는다.The recycled paper 2 laminated on the upper surface also does not limit its type.
또한 본 고안의 다른 실시예로서 재생지(2)가 아닌 일반적인 원지를 사용하는 것도 가능한 것으로, 재생펄프를 사용한 재생 활성카본지(1)의 일면 또는 양면에 일반원지를 합지하여 제조할 수도 있는 것이며, 상기 원지의 종류, 두께 등을 제한하는 것은 아니다.In addition, as another embodiment of the present invention, it is also possible to use a general paper instead of the recycled paper 2, and may be manufactured by laminating general paper on one or both sides of the recycled activated carbon paper 1 using the recycled pulp. It does not limit the kind, thickness, etc. of the base paper.
하기 표 1은, 본 고안에 의한 판지(A)를, 재생펄프와 활성탄을 5:4 중량비로혼합하여 제조하고, 그 양면에 재생지를 합지하여 판지(A) 전체가 15중량%의 활성탄(11)을 함유하도록 제조한 포장용 판지(A)의 포름알데히드 탈취율, 암모니아 탈취율, 톨루엔 탈취율, 포름알데히드검출량, 요오드흡착성능 등을 한국원사직물시험연구원 및 한국화학시험연구원에서 각각 시험하였다.Table 1 shows the cardboard A prepared according to the present invention by mixing recycled pulp and activated carbon in a 5: 4 weight ratio, and laminated cardboard on both sides thereof, whereby the whole cardboard A was 15% by weight of activated carbon (11). Formaldehyde deodorization rate, ammonia deodorization rate, toluene deodorization rate, formaldehyde detection amount, iodine adsorption performance, etc. of packaging cardboard (A) manufactured to contain the
상기 포름알데히드 탈취율은, 2ℓ의 시험용기에 10×10㎠의 시험편에 1㎕의 포름알데히드를 주입하여 측정하였고, 암모니아 탈취율은 2ℓ의 시험용기에 10×10㎠의 시험편에 4㎕의 암모니아를 주입하고 측정하였으며, 톨루엔 탈취율은 2ℓ의 시험용기에 10×10㎠의 시험편에 2.5㎕의 톨루엔을 주입하여 측정하였고, 포름알데히드 검출량은 KS K 0611-1996, B법, 아세틸아세톤법으로 검사하였으며, 요오드흡착성능은 KS M 1806; 1998로 검사하였다.The formaldehyde deodorization rate was measured by injecting 1 μl of formaldehyde into a 10 L 10 test piece into a 2 L test container, and the ammonia deodorization rate was injected into a 10 L test piece of 4 L of ammonia into a 10 L 10 test piece. Toluene deodorization rate was measured by injecting 2.5 μl of toluene into a 10 l 10 cm 2 specimen in a 2 l test vessel. Adsorption performance was KS M 1806; It was examined 1998.
상기 표 1에서 알 수 있는 바와 같이, 본 고안에 의한 판지(A)는 요오드 흡착력이 우수하여 유해물질을 제거하는데 효과가 있음은 물론, 각 유해물질에 대한 탈취율이 우수하였고, 자체 판지(A) 내의 포름알데이드 역시 검출되지 않음을 알 수 있었다.As can be seen in Table 1, the cardboard (A) according to the present invention is excellent in iodine adsorption power is effective in removing harmful substances, as well as excellent deodorization rate for each harmful substance, its own cardboard (A) Formaldehyde in the inside was also not detected.
이상에서와 같이, 본 고안을 비록 상기의 실시예에 한하여 설명하였지만, 반드시 여기에만 한정되는 것은 아니며, 본 고안의 판지를 라이너원지 또는 골심지로 하여 골판지를 제조할 수도 있고, 포장용 상자를 제조할 수도 있는 것으로, 본 고안의 범주와 사상을 벗어나지 않는 범위내에서 다양한 변형실시가 가능함은 물론이다.As described above, although the present invention has been described in the above embodiments, it is not necessarily limited thereto, and may be made of corrugated paper using a paperboard of the present invention as a liner paper or corrugated paper, or a packaging box may be manufactured. As a matter of course, various modifications and changes can be made without departing from the scope and spirit of the present invention.
이상의 설명에서 분명히 알 수 있듯이, 본 고안에 의한 재생 활성카본지를 이용한 포장용 판지에 의하면, 유해물질의 흡착성능을 갖는 재생 활성카본지의 일면 또는 양면에 재생지를 합지시킴으로써, 과일, 채소, 곡물 등의 식품과 꽃의 포장제품에 활성탄이 묻어나지 않도록 하고, 유해성분의 흡착, 산화방지, 제습, 탈취 및 항균효과를 갖도록 하여 과일, 채소, 곡물, 꽃 등의 변질을 방지함과 동시에, 포장물을 개봉할 때 산화시 발생되는 에틸렌 가스 등을 흡착하며, 활성탄으로부터 발생되는 음이온 및 원적외선으로 인해 식품과 꽃의 신선도를 더욱 우수하게 하여 보존기간을 연장 할 수 있도록 하고, 전자제품 포장용으로 사용할 경우에는 정전기를 방지하는 등의 유용한 효과를 제공한다.As apparent from the above description, according to the packaging cardboard using the regenerated activated carbon paper according to the present invention, by reclaiming the recycled paper on one or both sides of the regenerated active carbon paper having the adsorption performance of harmful substances, food such as fruits, vegetables, grains Prevents activated carbon from appearing on packaged products of asters and prevents the deterioration of fruits, vegetables, grains, flowers, etc. by opening up the package by adsorbing harmful substances, preventing oxidation, dehumidifying, deodorizing and antibacterial effect. Adsorption of ethylene gas generated during oxidation, and anion and far-infrared rays generated from activated carbon make the freshness of food and flowers more excellent to extend the shelf life, and to prevent static electricity when used for packaging electronic products To provide useful effects.
또한, 활성탄이 포장용 판지의 겉면에 노출되지 않음으로써, 포장이 용이할 뿐만 아니라, 포장용 판지의 표면에 별도의 인쇄층을 형성할 수 있게 되어, 미려한 외관을 가질 수 있는 효과를 제공한다.In addition, since activated carbon is not exposed to the outer surface of the cardboard for packaging, not only the packaging is easy, but also a separate printing layer can be formed on the surface of the cardboard for packaging, thereby providing an effect of having a beautiful appearance.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
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| KR20-2004-0010992U KR200355572Y1 (en) | 2004-04-21 | 2004-04-21 | Paper board for packing using recycled paper with activated carbon |
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| Application Number | Priority Date | Filing Date | Title |
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| KR20-2004-0010992U KR200355572Y1 (en) | 2004-04-21 | 2004-04-21 | Paper board for packing using recycled paper with activated carbon |
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| KR200355572Y1 true KR200355572Y1 (en) | 2004-07-07 |
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