KR100968893B1 - Antibiotic sheet mattress for vehicle - Google Patents

Antibiotic sheet mattress for vehicle Download PDF

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KR100968893B1
KR100968893B1 KR1020080057729A KR20080057729A KR100968893B1 KR 100968893 B1 KR100968893 B1 KR 100968893B1 KR 1020080057729 A KR1020080057729 A KR 1020080057729A KR 20080057729 A KR20080057729 A KR 20080057729A KR 100968893 B1 KR100968893 B1 KR 100968893B1
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antimicrobial
sepiolite
vehicle
extract
mattress
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KR1020080057729A
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KR20090131799A (en
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김재용
전용진
엄명헌
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충북대학교 산학협력단
전용진
엄명헌
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90Details or parts not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

본 발명은 차량용 항균 시트 매트리스에 관한 것으로서, 더욱 상세하게는 올리브, 계피, 생강, 소나무, 이질풀, 스피어민트, 감송유, 쑥국화, 샐비아, 허브에서 추출한 천연 항균액을 세피올라이트 내에 흡수시켜, 상기의 세피올라이트를 차량용 시트 매트리스 제조시 첨가하여 완성하는 차량용 항균 시트에 관한 것이다. 본 발명에 의하여 자동차 내부 악취의 주원인인 시트 내부에 천연항균 성분을 도입함으로써 균을 사멸시키고 악취를 제거할 수 있다The present invention relates to a vehicle antibacterial sheet mattress, and more particularly, natural antibacterial liquid extracted from olive, cinnamon, ginger, pine, algae, spearmint, sweetened oil, tansy, sage, and herbs in sepiolite, The present invention relates to a vehicle antimicrobial sheet which is added by adding the sepiolite in the production of a vehicle seat mattress. According to the present invention, by introducing a natural antibacterial component into the seat which is the main cause of the odor inside the vehicle, it is possible to kill the bacteria and remove the odor.

차량, 항균, 시트, 매트리스, 세피올라이트, 올리브, 계피, 생강, 소나무 Vehicle, antibacterial, sheet, mattress, sepiolite, olive, cinnamon, ginger, pine

Description

차량용 항균 시트 매트리스{ANTIBIOTIC SHEET MATTRESS FOR VEHICLE}Antibacterial sheet mattress for vehicle {ANTIBIOTIC SHEET MATTRESS FOR VEHICLE}

본 발명은 올리브, 계피, 생강, 소나무, 이질풀, 스피어민트, 감송유, 쑥국화, 샐비아, 허브에서 추출한 천연 항균액을 흡수시킨 세피올라이트를 차량용 시트 매트리스 제조시에 첨가하여 완성하는 차량용 항균 시트에 관한 것이다.The present invention is an antimicrobial sheet for automobiles which is completed by adding sepiolite absorbed natural antibacterial liquids extracted from olives, cinnamon, ginger, pine, dysentery, spearmint, persimmon oil, tansy, sage, and herbs in manufacturing a car seat mattress. It is about.

통상 차량 내부의 악취 원으로는 에어컨 가동으로 인해 발생하는 공조 도관 내에서의 곰팡이 발생으로 인한 악취와 차량 시트 내부 매트리스에서 발생하는 악취를 들 수 있다. 차량용 시트 매트리스의 발포 스펀지는 승객의 움직임에 따라 수축 팽창하며 주변의 공기를 흡수, 방출하면서 차량 내부의 악취를 간직하게 된다. 더구나 승객과 가장 직접 접촉하는 부위이므로 땀, 먼지, 세균 등으로 인해 지속적으로 악취원인 물질이 시트 내부로 제공된다.Common sources of odors in a vehicle include odors caused by mold in air conditioning conduits generated by air conditioner operation and odors generated in a mattress inside a vehicle seat. The foam sponge of the vehicle seat mattress contracts and expands as the passenger moves and absorbs and releases the surrounding air, thereby retaining the odor inside the vehicle. In addition, the most direct contact with passengers, the sweat, dust, bacteria, etc. because of the persistent odorous substances are provided into the seat.

본 발명에서는 천연물을 이용한 고 항균성 자동차용 시트매트리스를 제조하기 위하여 천연항균 물질로써 올리브, 계피, 생강, 소나무, 이질풀, 스피어민트, 감송유, 쑥국화, 샐비아, 허브를 이용하였다. 상기 수종 중 올리브,계피,생강,소나무,이질풀의 추출물은 각각 대장균, 장티프스균 등 광범위한 세균에 대하여 강한 살균력을 보이며 스피어민트, 감송유, 쑥국화, 샐비아, 허브는 전자의 수종보다 살균력은 조금 떨어지나 휘발성이 강하여 본 발명의 휘발성 항균제 제조에 적합하다. In the present invention, in order to manufacture a highly antimicrobial automobile seat mattress using natural products, olive, cinnamon, ginger, pine, algae, spearmint, sweetened oil, tansy chrysanthemum, salvia and herbs were used as natural antibacterial substances. Among the species, the extracts of olive, cinnamon, ginger, pine and dysentery show strong bactericidal activity against a wide range of bacteria such as Escherichia coli and typhoid bacteria, respectively. Due to its high volatility, it is suitable for preparing the volatile antimicrobial agent of the present invention.

또한 본 발명의 항균물질의 담체로서 세피올라이트를 사용하였다. 세피올라이트는 Mg4Si6O15(OH)2·6H2O의 화학식을 가지는 흰색, 회색, 황색, 청색의 광물로서 비중은 2.0 이하이고 경도가 2 ~ 2.5 정도인 사방정계 광물이다. 통상 기름의 표백 정제에 뛰어난 효능을 보이는 것으로 알려져 있으며 다공질로써 매우 높은 흡착력과 탈색력, 결합력을 가진다. 상기의 천연 항균 물질과 세피올라이트를 이용하여 본 발명의 매트가 완성된다.Sepiolite was also used as a carrier of the antimicrobial material of the present invention. Sepiolite is a white, gray, yellow, and blue mineral having a chemical formula of Mg 4 Si 6 O 15 (OH) 2 .6H 2 O. It is a tetragonal mineral having a specific gravity of 2.0 or less and a hardness of about 2 to 2.5. It is generally known to show excellent efficacy in the bleaching of oil, and it is porous and has very high adsorption, decolorization, and binding strength. The mat of the present invention is completed by using the natural antibacterial substance and sepiolite.

본 발명의 목적은 내부에 천연 항균 물질이 흡수된 세피올라이트를 매트리스제조시 첨가하여 내부의 각종 악취와, 세균이 제거되는 차량용 항균 시트 매트리스를 제공하는 데 있다.An object of the present invention is to provide an antimicrobial sheet mattress for a vehicle in which various odors and bacteria are removed by adding sepiolite in which a natural antimicrobial substance is absorbed therein during manufacture of a mattress.

상기 목적을 달성하기 위해, 본 발명은 올리브, 계피, 생강, 소나무, 이질 풀, 스피어민트, 감송유, 쑥국화, 샐비아, 허브 중 선택되는 어느 1종 또는 2종 이상의 항균수종을 수처리에 의해 세척하여 이물질을 제거하고,In order to achieve the above object, the present invention is washed by water treatment of any one or two or more antibacterial species selected from olive, cinnamon, ginger, pine, dysentery, spearmint, conifer oil, tansy, sage, herbs To remove debris,

상기 세척된 항균수종을 절단하여 에탄올에 첨가하여 숙성시키고,The washed antimicrobial species were cut and aged in ethanol,

상기 숙성된 항균수종을 원심분리하여 하층부의 항균물을 채취하고,Centrifuging the aged antimicrobial species to collect the antimicrobial agent in the lower layer,

상기 채취된 항균물을 pH 7.0의 액체 컬럼크로마토그래피에서 아세토니트릴(Acetonitrile)을 용리액으로 하여 분리추출하고,The extracted antimicrobial was separated and extracted with acetonitrile (Acetonitrile) as an eluent in liquid column chromatography at pH 7.0,

상기 분리추출된 분리추출액을 원심분리하여 하층부의 항균추출물을 분리하고,Centrifuging the separated extract separated extract to separate the antibacterial extract of the lower layer,

상기 항균추출물을 직경 0.5 ~ 1.0mm의 세피올라이트 입자 분상물에 첨가하여 교반하고,The antimicrobial extract was added to the sepiolite particle powder having a diameter of 0.5 to 1.0 mm and stirred,

상기 교반된 세피올라이트를 실온에서 건조하고,The stirred sepiolite is dried at room temperature,

상기 건조된 세피올라이트에 1% 한천(agar) 용액을 첨가한 후 교반하여 코팅하고,1% agar solution was added to the dried sepiolite and then stirred and coated,

상기 코팅된 세피올라이트를 발포 스폰지 합성액과 혼합하여 제조되는 차량용 항균 시트 매트리스를 주요 기술적 구성으로 한다.The antimicrobial sheet mattress for a vehicle manufactured by mixing the coated sepiolite with a foamed sponge synthetic liquid is a main technical configuration.

이하, 상기 기술적 구성에 대해 상세히 살펴보도록 한다.Hereinafter, the technical configuration will be described in detail.

상기 항균수종의 세척은 표면에 존재하는 이물질을 없애기 위해, 고압 수(water)를 이용하여 2 ~ 3회 세척하고, 이물질이 완전히 제거되지 않았을 경우에 는 1 ~ 2회 정도 더 세척한다.The antibacterial species is washed two to three times using high pressure water to remove foreign substances present on the surface, and once or twice more if the foreign substances are not completely removed.

세척과정을 거친 항균수종을 절단하고 에탄올에 첨가하여 숙성시키게 되며, 이때 항균수종의 절단은 80 ~ 100mesh의 크기로 한다. 상기 절단범위를 벗어날 경우에는 에탄올의 침투가 용이하지 않아 추출이 용이하지 않은 문제가 있으므로 상기 항균수종은 80 ~ 100mesh 크기를 유지하는 것이 바람직하다.The antimicrobial species are washed and then added to ethanol and aged. The antimicrobial species are cut into 80 ~ 100mesh. If the cutting range is out of the ethanol is not easy to penetrate the extraction is not easy because there is a problem that the antimicrobial species is preferably maintained to 80 ~ 100mesh size.

그리고 상기 에탄올은 30 ~ 60%의 농도를 갖는 것으로, 상기 농도범위를 벗어날 경우에는 항균수종의 추출이 원활히 이루어지지 않는 문제가 있으므로, 상기 농도범위의 에탄올을 사용하는 것이 바람직하다.In addition, the ethanol has a concentration of 30 to 60%, and if it is out of the concentration range, there is a problem in that the extraction of the antibacterial species is not made smoothly, it is preferable to use the ethanol in the concentration range.

그리고 30 ~ 60% 에탄올을 이용한 항균수종 숙성기간은 30 ~ 50일로서, 30일 미만인 경우에는 숙성이 미진하며, 50일 초과하게 되는 경우에는 숙성이 마무리된 상태이기 때문에 숙성기간의 연장은 무의미하므로, 에탄올을 이용한 숙성은 30 ~ 50일을 유지하는 것이 바람직하다.And the maturation period of antimicrobial species using 30 ~ 60% ethanol is 30 to 50 days, less than 30 days of aging is insufficient, and if it exceeds 50 days, the aging period is meaningless because the aging is finished. Aging with ethanol is preferably maintained for 30 to 50 days.

숙성을 거친 항균수종은 원심분리기를 이용하여 원심분리하여 하층분의 항균물을 채취하며, 이때 원심분리는 2000G ~ 3000G에서 이루어지는 것으로, 2000G 미만인 경우에는 원심분리가 잘 이루어지지 않고, 3000G를 초과하게 되는 경우에는 분리도의 별다른 변화가 없으므로, 2000G ~ 3000G의 범위에서 원심분리가 이루어지는 것이 바람직하다.Aged antimicrobial species are centrifuged using a centrifuge to collect the antimicrobial substances in the lower layer. At this time, the centrifugation is performed at 2000G ~ 3000G. If there is no change in the degree of separation, it is preferable that the centrifugation in the range of 2000G ~ 3000G.

그리고 원심분리가 다된 항균물은 pH 7.0의 액체 컬럼크로마토그래피에서 아 세토니트릴(Acetonitrile)을 용리액으로 하여 분리추출 하게 되고, 그 분리추출과정에서 생성된 분리추출액은 다시 원심분리되며, 이때 원심분리는 2000G ~ 3000G에서 이루어지는 것으로, 2000G 미만인 경우에는 원심분리가 잘 이루어지지 않고, 3000G를 초과하게 되는 경우에는 분리도의 별다른 변화가 없으므로, 상기 원심분리는 2000G ~ 3000G에서 이루어지는 것이 바람직하다. 이 과정에서 원심분리된 항균추출물은 세피올라이트 분쇄물과 혼합되며, 상기 세피올라이트는 사전에 0.5mm ~ 1.0mm의 직경을 갖도록 분쇄한다. 상기 분쇄 직경이 0.1mm이하이면 너무 입자가 미세하여 항균추출물을 포집하는 능력이 떨어지고, 1,0mm이상이면 입자가 너무 커서 이물감을 일으킬 수 있다.The centrifuged antimicrobial is separated and extracted with acetonitrile as an eluent in liquid column chromatography at pH 7.0, and the separation extract produced during the separation extraction is centrifuged again. It is made in 2000G ~ 3000G, if less than 2000G centrifugation is not made well, if it exceeds 3000G, there is no change in separation degree, it is preferable that the centrifugation is made at 2000G ~ 3000G. The antimicrobial extract centrifuged in this process is mixed with the pulpy sepiolite, and the sepiolite is pulverized to have a diameter of 0.5 mm to 1.0 mm in advance. If the grinding diameter is 0.1mm or less, the particles are so fine that the ability to capture the antimicrobial extracts is poor, and if the particle size is more than 1,0mm, the particles may be too large to cause a foreign object.

이때 상기 세피올라이트 분쇄물에 항균추출액을 첨가 교반함에 있어서 그 비율은 세피올라이트 60 ~ 70 wt%, 항균추출액 30 ~ 40 wt%로 하며, 이와 같은 비율 구간에서 포화가 이루어진다.At this time, the addition of the antimicrobial extract to the agitated cepiolite pulverization, the ratio is 60 to 70 wt% sepiolite, 30 to 40 wt% antimicrobial extract, saturation is made in such a ratio section.

상기 항균추출액을 첨가하여 교반된 세피올라이트 입자는 건조과정을 거치게 되며, 이때 건조함에 있어서는 완전히 건조되지 않도록 주의하며, 표면만 건조되도록 한다. 이는 완전히 건조하면 유효성분의 상당부분이 휘발 되어버리므로 휘발 전에 발포수지와 혼합하여 발포수지 내부에 유효성분이 고정되도록 하여야 한다.Sepiolite particles stirred by the addition of the antimicrobial extract is subjected to a drying process, in this case, be careful not to dry completely when drying, only to dry the surface. Since it will volatilize much of the active ingredient when completely dried, it should be mixed with the foamed resin before volatilization so that the active ingredient is fixed inside the foamed resin.

상기 건조과정을 거친 세피올라이트는 항균성분의 급속한 휘발을 막고 매트리스 제조시에 가해지는 열을 견뎌내기 위하여 한천 코팅을 하게 되며, 세피올라이 트 85 ~ 95 wt%에 1% 한천(agar) 용액 5 ~ 15 wt%를 첨가한 후 교반한다.Sepiolite, which has undergone the drying process, is coated with agar to prevent rapid volatilization of the antimicrobial component and withstand the heat applied during the manufacture of the mattress, and 1% agar solution at 85 to 95 wt% of sepiolite 5 Add 15 wt% and stir.

상기 세피올라이트가 95 wt%를 초과하거나, 한천(agar) 용액이 5 wt% 미만인 경우에는 한천 코팅이 제대로 이루어지지 않아, 항균성분의 급속한 휘발과 매트리스 제조시 가해지는 열에 견뎌내기 어려울 수 있고, 세피올라이트가 85 wt% 미만이거나, 한천(agar) 용액 15 wt%를 초과하여 사용하게 되는 경우 항균성이 떨어질 우려가 있으므로, 상기 세피올라이트 85 ~ 95 wt%에 1% 한천(agar) 용액 5 ~ 15 wt%를 첨가하는 것이 바람직하다.If the sepiolite is more than 95 wt%, or if the agar solution is less than 5 wt% agar coating is not properly made, it may be difficult to withstand the rapid volatilization of the antimicrobial component and the heat applied during the manufacture of the mattress, If the use of sepiolite is less than 85 wt% or more than 15 wt% agar solution, the antimicrobial activity may be lowered. Therefore, 1% agar solution at 85 to 95 wt% of the sepiolite 5 Preference is given to adding -15 wt%.

다음으로 상기 한천으로 코팅된 세피올라이트를 발포 스펀지 합성액과 혼합함으로써 차량용 항균 시트 매트리스가 완성된다.Next, the antimicrobial sheet mattress for a vehicle is completed by mixing the agar coated with the agar and the foamed foam synthetic liquid.

상술한 바와 같이, 본 발명에 따른 자동차용 항균성 시트매트리스에 의하여 자동차 내부 악취의 주원인인 시트 내부에 천연항균 성분을 도입함으로써, 균을 사멸시키고 악취를 제거할 수 있다.As described above, by introducing a natural antimicrobial component into the seat which is the main cause of the odor inside the vehicle by the antimicrobial sheet mattress for automobiles according to the present invention, the bacteria can be killed and the odor can be removed.

이하, 상기의 기술적 구성을 실시 예를 통해 구체적으로 살펴보고자 한다.Hereinafter, the above technical configuration will be described in detail with reference to the following embodiments.

실시 예 1: 차량용 항균 시트 매트리스Example 1 Vehicle Antibacterial Sheet Mattress

올리브, 계피, 생강, 소나무, 이질풀, 스피어민트, 감송유, 쑥국화, 샐비아, 허브 각 2kg을 고압수처리에 의해 세척하여 이물질을 제거하였다. 상기 세척된 항균수종을 100mesh의 크기로 절단하고 40% 농도 에탄올 21ℓ에 첨가하여 35℃에서 40일간 숙성시켰다. 2 kg of olive, cinnamon, ginger, pine, algae, spearmint, sweetened oil, tansy, sage, and herb each were washed by high-pressure water treatment to remove foreign substances. The washed antimicrobial species were cut to a size of 100mesh and added to 21 L of 40% concentration of ethanol and aged at 35 ° C. for 40 days.

상기 숙성된 항균추출물을 3,000G에서 40분간 원심분리하여 하층부의 항균추출물을 채취하였고, 상기 채취된 항균추출물을 알루미나로 충전된 고성능 액체크로마토그래피에서 아세토니트릴(pH 7.0)을 용리액으로 하여 정제하였고, 흡광도를 측정하여 최대 피크를 100으로 했을 때 전후 20인 범위까지의 용리액을 수거하여 다시 3,000G에서 원심분리하였다. The aged antimicrobial extract was centrifuged at 3,000 G for 40 minutes to obtain an antimicrobial extract of the lower layer, and the extracted antimicrobial extract was purified using acetonitrile (pH 7.0) as an eluent in high performance liquid chromatography filled with alumina. When the absorbance was measured and the maximum peak was 100, the eluents were collected in the range of 20 before and after, and centrifuged again at 3,000 G.

그리고, 세피올라이트 원석을 직경 0.5mm가 되도록 분쇄하고, 송풍하여 분진을 제거하고, 상기 분쇄된 세피올라이트 입자 분상물에 최종 정제된 항균추출물을 첨가하고 저속 교반하여 흡수시켰다. 상기 항균물질을 함유한 세피올라이트 100g에 에 1.0 % 농도 한천(agar) 용액 10㎖를 혼합하여 교반하여 한천으로 표면 피막을 입혔다. 상기 한천 코팅된 세피올라이트 50g을 발포스폰지에 혼합하여 자동차용 시트매트리스를 완성하였다.The sepiolite ore was pulverized to a diameter of 0.5 mm, blown to remove dust, and the final purified antimicrobial extract was added to the pulverized sepiolite particle powder and absorbed by stirring at low speed. 10 g of agar solution containing 1.0% of agar was mixed with 100 g of sepiolite containing the antimicrobial agent and stirred to coat the surface with agar. 50 g of the agar-coated sepiolite was mixed with a foamed sponge to complete a car seat mattress.

Claims (1)

올리브, 계피, 생강, 소나무, 이질풀, 스피어민트, 감송유, 쑥국화, 샐비아, 허브 중 선택되는 어느 1종 또는 2종 이상의 항균수종을 수처리에 의해 세척하여 이물질을 제거하고,One or two or more antibacterial species selected from olives, cinnamon, ginger, pine, algae, spearmint, sweetened oil, tansy, sage and herbs, are washed by water treatment to remove foreign substances, 상기 세척된 항균수종을 절단하여 에탄올에 첨가하여 숙성시키고,The washed antimicrobial species were cut and aged in ethanol, 상기 숙성된 항균수종을 원심분리하여 하층부의 항균물을 채취하고,Centrifuging the aged antimicrobial species to collect the antimicrobial agent in the lower layer, 상기 채취된 항균물을 pH 7.0의 액체 컬럼크로마토그래피에서 아세토니트릴(Acetonitrile)을 용리액으로 하여 분리추출하고,The extracted antimicrobial was separated and extracted with acetonitrile (Acetonitrile) as an eluent in liquid column chromatography at pH 7.0, 상기 분리추출된 분리추출액을 원심분리하여 하층부의 항균추출물을 분리하고,Centrifuging the separated extract separated extract to separate the antibacterial extract of the lower layer, 상기 항균추출물을 직경 0.5 ~ 1.0mm의 세피올라이트 입자 분상물에 첨가하여 교반하고,The antimicrobial extract was added to the sepiolite particle powder having a diameter of 0.5 to 1.0 mm and stirred, 상기 교반된 세피올라이트를 실온에서 건조하고,The stirred sepiolite is dried at room temperature, 상기 건조된 세피올라이트에 1% 한천(agar) 용액을 첨가한 후 교반하여 코팅하고,1% agar solution was added to the dried sepiolite and then stirred and coated, 상기 코팅된 세피올라이트를 발포 스폰지 합성액과 혼합하여 제조됨을 특징으로 하는 차량용 항균 시트 매트리스.Antimicrobial sheet mattress for a vehicle, characterized in that the coating is prepared by mixing the foamed sponge composite solution.
KR1020080057729A 2008-06-19 2008-06-19 Antibiotic sheet mattress for vehicle KR100968893B1 (en)

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KR19990084982A (en) * 1998-05-13 1999-12-06 이승칠 Multifunctional automotive seats.
KR20000014844A (en) * 1998-08-25 2000-03-15 홍완기 Helmet having antibiotic inner material and production method thereof
KR20060093261A (en) * 2005-02-21 2006-08-24 한국타미나 주식회사 A manufacturing method of sponge made from polyurethane foam containing silver nano particles and a sponge formed therefrom

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Publication number Priority date Publication date Assignee Title
KR19990084982A (en) * 1998-05-13 1999-12-06 이승칠 Multifunctional automotive seats.
KR20000014844A (en) * 1998-08-25 2000-03-15 홍완기 Helmet having antibiotic inner material and production method thereof
KR20060093261A (en) * 2005-02-21 2006-08-24 한국타미나 주식회사 A manufacturing method of sponge made from polyurethane foam containing silver nano particles and a sponge formed therefrom

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