KR100242824B1 - Method of manufacturing electromagnetic waves absorbent radiating ultrared ray - Google Patents
Method of manufacturing electromagnetic waves absorbent radiating ultrared ray Download PDFInfo
- Publication number
- KR100242824B1 KR100242824B1 KR1019970065217A KR19970065217A KR100242824B1 KR 100242824 B1 KR100242824 B1 KR 100242824B1 KR 1019970065217 A KR1019970065217 A KR 1019970065217A KR 19970065217 A KR19970065217 A KR 19970065217A KR 100242824 B1 KR100242824 B1 KR 100242824B1
- Authority
- KR
- South Korea
- Prior art keywords
- leaves
- mixed
- seaweed
- mixing
- cactus
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0097—Anion- and far-infrared-emitting materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
본 발명에서는 벽지, 장판지 등의 접착제로서 그 내면이나 이면에 적절한 방법으로 도포 하여 사용하거나 전자파가 발생하는 부위 및 그 부근에 도포 사용함으로써 실내의 각종 전자제품에서 발생하는 전자파를 사방에서 흡수하고 또한 사방으로 원적외선을 방출시키므로 인체 건강에 유익한 효과를 주게 되는 원적외선 방사성능을 가진 전자파 흡수제의 제조방법에 대해 공개한다. 본 발명에 따른 전자파흡수제는 선인장과 미역이나 다시마를 함께 압착하여 선인장과 해초의 혼합액즙을 얻는 제1공정과, 상기 제1공정에서 얻은 혼합액즙에 폴리비닐알콜을 혼합하고 45~65℃의 온도로 가열하면서, 은행나무 잎, 오동나무 잎, 떡갈나무 잎, 소나무 잎 및 무 잎을 단독으로 또는 선택적으로 혼합한 후 80℃로 가열하면서 물을 내려 얻은 나뭇잎 추출액에 자연산 왕소금을 그대로 또는 대나무에 밀봉한 후 600~800℃에서 소성하여 분쇄한 소금분말을 용해시켜 혼합하는 제2공정과, 상기 제2공정의 처리물에 상기 제2공정에서 나뭇잎 추출액에서 분리된 나뭇잎 고형물을 건조하여 150 메쉬 크기로 분쇄한 것과 원적외선 발생물질로서 비석, 운모석, 압석, 활석 및 황토를 각각 소성하여 325 메쉬로 분쇄한 후 철분을 제거한 것을 차례로 혼합하여 혼련 교반하는 제3공정을 포함하는 것을 특징으로 한다.In the present invention, as an adhesive such as a wallpaper, a sheet of cardboard, etc., it is applied to the inner surface or the back of the sheet by an appropriate method, or applied to and around the area where electromagnetic waves are generated, thereby absorbing the electromagnetic waves generated from various electronic products in the room and everywhere. The present invention discloses a method for producing an electromagnetic wave absorber having far-infrared radioactivity, which emits far infrared rays and thus has a beneficial effect on human health. The electromagnetic wave absorbing agent according to the present invention is a step of obtaining a mixed solution of cactus and seaweed by compressing the cactus and seaweed or kelp together, and mixing the polyvinyl alcohol in the mixed solution obtained in the first step and the temperature of 45 ~ 65 ℃ Ginkgo biloba leaves, paulownia leaves, oak leaves, pine leaves and radish leaves alone or selectively mixed with heating, and then heated with 80 ° C. After the second step of dissolving and mixing the salt powder sintered by firing at 600 ~ 800 ℃ and mixed, the leaf solids separated from the leaf extract in the second step to the treated material of the second step to dry to 150 mesh size The pulverized and the far-infrared-generating materials are calcined to 325 mesh after calcination, mica, crushed stone, talc and loess, respectively, and then iron is removed and mixed And a third step of performing continuous stirring.
Description
본 발명은 벽지나 장판지의 내면에 도포 하여 접착제로 사용할 수 있는 원적외선 방사 성능을 갖는 전자파 흡수제에 관한 것이다.The present invention relates to an electromagnetic wave absorber having far-infrared radiation performance which can be applied to an inner surface of a wallpaper or a sheet of paper and used as an adhesive.
각종 전자 제품에서 발생하는 전자파를 차단 또는 흡수하는 금속제품이나 각종 세라믹 제품들을 시판되어, 전자 제품의 전자파 발생 부위 또는 그 근처에 부착하여 사용하고 있으나 그 효과가 아직 미미한 실정이며, 또한 전자제품 임의의 위치에 마음대로 장착할 수 없어 특히 방바닥이나 벽 등에 대해서는 전혀 사용이 불가능한 결점이 있었다.Metal products and various ceramic products that block or absorb electromagnetic waves generated by various electronic products are commercially available and attached to or near the electromagnetic wave generating region of the electronic product, but the effect is still insignificant, There was a drawback that it was not possible to mount it at will, so it could not be used at all on the floor or wall.
따라서, 본 발명의 목적은 전자파가 발생하는 장소에 관계없이 도포 가능하여 특히 장판지나 벽지에도 도포할 수 있는 원적외선 방사 성능을 가진 전자파 흡수제의 제조방법을 제공하는 데에 있다.Accordingly, it is an object of the present invention to provide a method for producing an electromagnetic wave absorber having far-infrared radiation performance which can be applied regardless of a location where electromagnetic waves are generated and can be applied to a sheet of paper or a wallpaper.
또한 본 발명의 다른 목적은 원적외선을 방사하여 인체 건강을 유익하게 하는 원적외선 방사 성능을 가진 전자파 흡수제의 제조방법을 제공하는 데에 있다.In addition, another object of the present invention is to provide a method for producing an electromagnetic wave absorber having far-infrared radiation performance to benefit human health by radiating far-infrared rays.
상기 본 발명의 목적을 달성하기 위한 원적외선 방사 성능을 갖는 전자파 흡수제의 제조방법은, 선인장과 미역이나 다시마를 함께 압착하여 선인장과 해초의 혼합액즙을 얻는 제1공정과; 상기 제1공정에서 얻은 혼합액즙에 폴리비닐알콜을 혼합하고 45~65℃의 온도로 가열하면서, 은행나무 잎, 오동나무 잎, 떡갈나무 잎, 소나무 잎 및 무 잎을 단독으로 또는 선택적으로 혼합한 후 80℃로 가열하면서 물을 내려 얻은 나뭇잎 추출액에 자연산 왕소금을 그대로 또는 대나무에 말봉한 후 600~800℃에서 소성하여 분쇄한 소금분말을 용해시켜 혼합하는 제2공정과; 그리고, 상기 제2공정의 처리물에 상기 제2공정에서 나뭇잎 추출액을 분리하고 남게되는 고형물을 건조하여 150 메쉬 크기로 분쇄한 나뭇잎 분말과 원적외선 발생 물질로서 비석, 운모석, 압석, 활석 및 황토를 각각 소성하여 325 메쉬로 분쇄한 후 철분을 제거한 것을 차례로 혼합하여 혼련 교반하는 제3공정; 을 포함하는 것을 특징으로 한다.In order to achieve the object of the present invention, a method for producing an electromagnetic wave absorbing agent having far-infrared radiation performance includes: a first step of compressing a cactus, seaweed, or kelp together to obtain a mixed juice of a cactus and seaweed; Polyvinyl alcohol was mixed with the mixed liquid obtained in the first step and heated to a temperature of 45-65 ° C. while mixing ginkgo leaves, paulownia leaves, oak leaves, pine leaves and radish leaves alone or selectively. A second step of dissolving and mixing the salt powder pulverized and then fired at 600 to 800 ° C. in natural bamboo salt as it is or in a bamboo leaf extract obtained by dropping water while heating to 80 ° C .; Then, the leaves of the second process is separated from the leaves extract in the second step, and the remaining solids are dried and pulverized to 150 mesh in size, and the powder of far infrared rays such as zeolite, mica, crushed stone, talc and loess. A third step of sintering and pulverizing the 325 mesh, and then mixing and stirring the iron powders in order; Characterized in that it comprises a.
이하, 본 발명에 따른 원적외선 방사 성능을 갖는 전자파 흡수제의 제조방법에 대해 상세히 설명하고자 한다.Hereinafter, a method of manufacturing an electromagnetic wave absorber having far-infrared radiation performance according to the present invention will be described in detail.
먼저, 선인장과 해초로서 미역이나 다시마를 선택적으로 혼합한 후 압착하여 혼합액즙을 얻는다.First, cactus and seaweed are selectively mixed with seaweed or kelp, and then compressed to obtain a mixed liquid juice.
다음 상기 혼합액즙에 폴리비닐알콜(PVA)과 같은 수용성 접착제를 균일하게 혼합하여 45~65℃의 온도로 가열하면서 소금이 용해된 나뭇잎 추출액을 첨가한다.Next, the mixture is uniformly mixed with a water-soluble adhesive such as polyvinyl alcohol (PVA) and heated to a temperature of 45 ~ 65 ℃ is added to the salt extract leaves.
본 발명에 있어서 나뭇잎 추출액, 선인장 및 해초는 전자파 흡수작용을 하게 된다. 선인장과 해초는 약간의 접착성이 있는 물질로서 여기에 수용성 접착제를 첨가함으로써 본 발명의 제품이 벽지나 장판지 등의 접착제로 사용할 수 있게 된다.In the present invention, the leaf extract, cactus and seaweed will act as an electromagnetic wave absorption. Cactus and seaweed are slightly adhesive substances, and by adding a water-soluble adhesive thereto, the product of the present invention can be used as an adhesive such as wallpaper or cardboard.
나뭇잎 추출액으로는 은행나무 잎, 오동나무 잎, 떡갈나무 잎, 소나무 잎 및 무 잎을 단독으로 또는 임의 선택 혼합하여 약 80℃의 온도로 가열하면서 물을 조금 내려 추출한 즙을 사용하는데, 나뭇잎 추출액에 소금을 먼저 용해시키는 것은 전자파 차단 효과가 있는 소금이 최종 목적물인 전자파 흡수제에 고루 분포되도록 하기 위한 것이다.As the extract of the leaves, ginkgo leaves, paulownia leaves, oak leaves, pine leaves, and radish leaves are used alone or in any combination, and the juice is extracted with a little water while heating to a temperature of about 80 ° C. Dissolving the salt first is to ensure that the salt with the electromagnetic wave blocking effect is evenly distributed in the final absorber.
또한, 소금은 그 자체에 의한 원적외선 방출량을 증가시키게 됨은 물론 부패 방지 역할을 하는 것인데, 이로는 자연산 왕소금을 자연 상태 그대로 또는 대나무에 밀봉한 채 600~800℃에서 소성한 다음 약 325 메쉬 정도의 입도로 분쇄하여 사용한다.In addition, salt not only increases the amount of far-infrared radiation emitted by itself, but also plays a role of preventing corruption. This is achieved by firing the natural royal salt in its natural state or in a bamboo-sealed state at 600-800 ° C., followed by a particle size of about 325 mesh. Grind to use.
다음 상기에서 얻은 혼합용액에 나뭇잎 분말과 혼합 세라믹 분말을 차례로 첨가한 후 상온에서 혼련 교반함으로써 전자파 흡수제가 얻어진다.Next, after the leaf powder and the mixed ceramic powder are sequentially added to the mixed solution obtained above, an electromagnetic wave absorber is obtained by kneading and stirring at room temperature.
나뭇잎 분말로는 상기에서 나뭇잎 추출액을 분리하고 남게 되는 고형물을 상온에서 건조하여 혼합이 용이한 정도로, 바람직하게는 약 150 메쉬 정도로 분쇄하여 사용한다.As the leaf powder, the leaf extract is separated and the solids remaining are dried at room temperature to be easily mixed, and preferably pulverized to about 150 mesh.
세라믹 분말로는 원적외선 방사물질인 비석, 운모석, 납석, 활석 및 황토 등을 적절한 온도에서 소성한 후 약 325 메쉬 크기로 분쇄하고 철분을 제거하여 혼합 사용한다. 운모석, 납석, 활석은 소성 후 냉수를 이용하여 급냉 건조시켜 분말화하는데, 비석과 운모석은 5~10mm 크기로 600~800℃에서, 납석과 활석은 5~10mm 크기로 450~600℃에서, 그리고 황토는 350~450℃에서 각각 소성한다. 이러한 과정을 거쳐 만든 원적외선 방사물질의 분말, 즉 세라믹 분말은 일정한 비율로 혼합하여 사용한다.As ceramic powder, calcined mica, mica, feldspar, talc and loess, which are far-infrared radiation materials, are calcined at an appropriate temperature, and then pulverized to about 325 mesh size and mixed with iron. After firing, mica, feldspar and talc are quenched and dried using cold water to be powdered. Zeolite and mica are 5-10 mm in size at 600-800 ℃, and feldspar and talc are in size of 5-10mm at 450-600 ℃. And loess is fired at 350 ~ 450 ℃ respectively. The powder of far-infrared radiation material made through this process, that is, ceramic powder, is mixed and used at a constant ratio.
상기에서 원적외선 방사물질의 소성온도에 차이를 두는 것은 그 이하의 온도에서는 완전한 소성이 어렵고 그 이상의 온도에서는 소결 정도가 높아서 분말화 하는데 어려움이 따르기 때문이며, 특히 황토의 경우 그 이상의 소성온도에서는 옹기와 같이 변하기 때문에 분말화가 불가능해짐을 물론 원적외선 방출 성능이 떨어지게 된다.The difference in the firing temperature of the far-infrared radiation material is that it is difficult to completely sinter at lower temperatures and higher in sintering at higher temperatures, and in particular, in the case of loess, at higher firing temperatures, such as onggi As a result, the powdering becomes impossible and the far infrared emission performance is lowered.
또한, 세라믹 분말의 입도와 나뭇잎 분말을 약 325 메쉬 및 약 150 메쉬 이하로 만드는 것은 상기 혼합용액에 용이하게 혼합되도록 하기 위한 것으로, 그 이상의 입자크기는 균일한 혼합이 잘 이루어지지 않게 된다.In addition, the particle size and the leaf powder of the ceramic powder to about 325 mesh and about 150 mesh or less is to be easily mixed in the mixed solution, the particle size of more than the uniform mixing is not made well.
이상에서 상세히 설명한 바와 같이, 본 발명에 따른 자외선 흡수제는 벽지, 장판지 등의 접착제로서 그 내면이나 이면에 적절한 방법으로 도포 하여 사용하거나 전자파가 발생하는 부위 및 그 부근에 도포 사용함으로써 실내의 각종 전자제품에서 발생하는 전자파를 사방에서 흡수하고 또한 사방으로 원적외선을 방출시키므로 인체 건강에 유익한 효과를 주게 되는 것이다.As described in detail above, the ultraviolet absorber according to the present invention is used as an adhesive such as wallpaper or a sheet of paper, and applied to the inner surface or the rear surface in an appropriate method, or applied to and around the area where electromagnetic waves are generated, thereby providing various electronic products in the room. It absorbs electromagnetic waves from all directions and emits far-infrared rays in all directions, which is beneficial to human health.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970065217A KR100242824B1 (en) | 1997-12-02 | 1997-12-02 | Method of manufacturing electromagnetic waves absorbent radiating ultrared ray |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970065217A KR100242824B1 (en) | 1997-12-02 | 1997-12-02 | Method of manufacturing electromagnetic waves absorbent radiating ultrared ray |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990047017A KR19990047017A (en) | 1999-07-05 |
KR100242824B1 true KR100242824B1 (en) | 2000-02-01 |
Family
ID=19526221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019970065217A KR100242824B1 (en) | 1997-12-02 | 1997-12-02 | Method of manufacturing electromagnetic waves absorbent radiating ultrared ray |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100242824B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100361365B1 (en) * | 1999-08-25 | 2002-11-22 | 곽명숙 | A structure with the salt |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100378132B1 (en) * | 1999-12-03 | 2003-03-29 | 오춘금 | Process For Preparing Of Far Infrared ray Chip |
KR20020076059A (en) * | 2001-03-27 | 2002-10-09 | 정재일 | manufacture method of wallpaper which contains mineral matter |
KR20020080054A (en) * | 2001-04-10 | 2002-10-23 | 주식회사 월핀 | Wallpaper of synthetic resins and biodegradable natural materials |
KR20040049369A (en) * | 2002-12-03 | 2004-06-12 | 이영환 | eye bandage skillea |
KR100591003B1 (en) * | 2003-12-01 | 2006-06-19 | 이종영 | The manufacturing Process of non-woven fabric, woven fabric and paper with preventation of electric charge amd anti-fungi |
KR101005291B1 (en) * | 2008-01-14 | 2011-01-04 | 이춘구 | A antifungal sheet and the making method blocking harmful bacterium |
KR101529857B1 (en) * | 2015-03-23 | 2015-06-17 | 대복건설 주식회사 | Salt mortar composition for building materials |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970059144A (en) * | 1996-01-19 | 1997-08-12 | 김효충 | Manufacturing method of far-infrared ray powder material |
KR970065459A (en) * | 1997-07-08 | 1997-10-13 | 양병선 | Building plaster using yellow clay as main material and its manufacturing method |
-
1997
- 1997-12-02 KR KR1019970065217A patent/KR100242824B1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970059144A (en) * | 1996-01-19 | 1997-08-12 | 김효충 | Manufacturing method of far-infrared ray powder material |
KR970065459A (en) * | 1997-07-08 | 1997-10-13 | 양병선 | Building plaster using yellow clay as main material and its manufacturing method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100361365B1 (en) * | 1999-08-25 | 2002-11-22 | 곽명숙 | A structure with the salt |
Also Published As
Publication number | Publication date |
---|---|
KR19990047017A (en) | 1999-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100543886B1 (en) | Ceramic powder emitting far infrared ray and manufacturing method of a high-density physical therapy stone thereby | |
KR100242824B1 (en) | Method of manufacturing electromagnetic waves absorbent radiating ultrared ray | |
KR20070008042A (en) | Forming material including charcoal and manufacturing method thereof | |
KR100251445B1 (en) | Method of manufacturing construction materials having ultraed ray emitting and electromagnetic waves absorpting functions | |
KR102146800B1 (en) | Heater-combined Chair type Fumigation device using bio ceramic | |
KR20020096056A (en) | Method for manufacturing long wave infrared radiation & electromagnetic absorption paint | |
KR102146794B1 (en) | foam ceramic fabrication and manufacturing method thereof | |
KR19980016204U (en) | Far Infrared Radiation Ceramic | |
KR102329331B1 (en) | Manufacturing Method for Vermiculite Board | |
KR101707953B1 (en) | Method for manufacturing a solid environment-friendly natural board | |
KR200420643Y1 (en) | The base paper and method to product paper | |
KR100673383B1 (en) | Wallpaper and preparing method thereof | |
KR101076282B1 (en) | a making method of vermiculite block | |
KR101859442B1 (en) | Method for manufacturing environment-friendly yellow soil board | |
KR100458488B1 (en) | Method for producing charcoal containing silver | |
KR20070088973A (en) | The base paper and method to product paper | |
KR100783486B1 (en) | Squared dome shape ceramics plate for radiating the far infrared and anion | |
JP2008106584A (en) | Surface material, construction wall material having surface material and its manufacturing method | |
KR200398222Y1 (en) | High density Physical therapy stone manufactured of Ceramic emitting far infrared ray | |
KR100363634B1 (en) | Shielding materials for electromagnetic radiation using the expansional minerals | |
KR100530020B1 (en) | Lining paper containing yellow soil | |
JPS5957937A (en) | Manufacture of calcium carbonate hardened body | |
KR19990084026A (en) | The ecomaterial composition for food containers and the preparation method of food containers utilizing thereof | |
KR20210006126A (en) | manufacturing methods for functional board using application of a waste paper | |
KR940002031B1 (en) | Composition of Far Infrared Radiation Powder |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20021107 Year of fee payment: 4 |
|
LAPS | Lapse due to unpaid annual fee |