KR20050034361A - Memory foam for pillow - Google Patents

Memory foam for pillow Download PDF

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Publication number
KR20050034361A
KR20050034361A KR1020030070258A KR20030070258A KR20050034361A KR 20050034361 A KR20050034361 A KR 20050034361A KR 1020030070258 A KR1020030070258 A KR 1020030070258A KR 20030070258 A KR20030070258 A KR 20030070258A KR 20050034361 A KR20050034361 A KR 20050034361A
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South Korea
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foam
pillow
mold
memory foam
weight
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KR1020030070258A
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Korean (ko)
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이성환
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이성환
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Priority to KR1020030070258A priority Critical patent/KR20050034361A/en
Publication of KR20050034361A publication Critical patent/KR20050034361A/en

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/10Pillows
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/007Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows comprising deodorising, fragrance releasing, therapeutic or disinfecting substances
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/10Pillows
    • A47G2009/1018Foam pillows

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Pulmonology (AREA)
  • Bedding Items (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

본 발명은 원적외선과 음이온이 다량으로 방사, 방출되며 폴리우레탄 폼의 고유한 냄새가 나지 않는 베개용 메모리 폼에 관한 것으로서, 그 구성은, 연질몰드, 저탄성, 고밀도의 베개용 메모리 폼에 있어서, 포리올 100중량부에 대하여 MDI 17~40중량%와, 원적외선 및 음이온 발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위한 첨가제 3중량% 이하를 믹싱헤드를 통해서 온조기의 온수에 의해 50~60℃로 가열된 몰드에 충진시켜 5~10분간 경화시킨 후 성형물을 몰드에서 탈형시켜 상온에서 20~30시간 숙성시켜 된 것이다.The present invention relates to a pillow memory foam that is radiated and released in a large amount of far-infrared rays and anions and does not smell inherently of a polyurethane foam, and the configuration thereof is a soft mold, a low elasticity, and a high density pillow memory foam. 17 to 40% by weight of MDI with respect to 100 parts by weight of polyol, and 3% by weight or less of additives for removing far-infrared rays and negative ions and the inherent odor of polyurethane foam to 50-60 ° C by hot water of the heater through the mixing head. After filling in a heated mold and curing for 5 to 10 minutes, the molded product was demolded from the mold and aged at room temperature for 20 to 30 hours.

Description

베개용 메모리 폼{Memory foam for pillow}Memory foam for pillow {Memory foam for pillow}

본 발명은 원적외선과 음이온이 다량으로 발생되며, 폴리우레탄 폼 고유의 냄새가 나지 않는 베개용 메모리 폼에 관한 것으로서, 더욱 상세하게는 연질몰드, 저탄성, 고밀도의 베개용 메모리 폼을 형성함에 있어서, 포리올에 원적외선과 음이온발생제 및 무향 탈취제를 혼합하고, 그 원적외선과 음이온발생제 및 무향 탈취제가 혼합된 포리올과 경화제인 MDI를 이용하여 사람에게 편안함을 주고 신진대사를 활발하게 하며 숙면을 취할 수 있도록 한 베개용 메모리 폼 제조에 관한 것이다.The present invention relates to a pillow memory foam that is generated in a large amount of far infrared rays and anions, and does not smell inherent to polyurethane foam, and more particularly, in forming a soft mold, a low elasticity, a high density pillow memory foam, A mixture of far-infrared, anion-generating, and fragrance-free deodorant is mixed with polyol, and MDI, a polyol and a curing agent mixed with the far-infrared ray, anion-generating agent, and fragrance-free deodorant, is used to make people comfortable, activate metabolism, and get a good night's sleep A pillow foam manufacture.

생활이 윤택해짐에 따라 건강에 대한 관심이 날로 증대되고 있으며, 특히 원적외선과 음이온이 인체에 유효한 영향을 주고 있다는 사실이 널리 알려짐에 따라 많은 종류의 생필품에 원적외선과 음이온 발생제를 적용한 각종 음식용기, 의류 및 침구류 등에 사용되고 있다.As life improves, interest in health is increasing day by day, and in particular, it is widely known that far infrared rays and negative ions have an effective effect on the human body, and various food containers that have applied far infrared rays and anion generators to many kinds of necessities, It is used for clothes and bedding.

특히 상기 침구류에서 베개는 잠을 잘 때에 필수적으로 사용되는 것으로서, 그 무엇보다 더 중요한 것이며 잠을 편안히 자느냐 못 자느냐에 따라 하루일과가 달라진다 해도 과언이 아니다. In particular, in the bedding pillow is used as an essential when sleeping, it is more important than anything and it is no exaggeration to say that the daily routine varies depending on whether or not to sleep comfortably.

이와 같이 중요한 역할을 하는 베개는 최근 들어 폴리우레탄수지(메모리 폼)로 제조된 것들이 다양하게 제조 판매되고 있으나 이들은 모두 단순한 폴리우레탄수지 종류의 것으로서 인체에 유해할 뿐만 아니라, 폴리우레탄수지가 가지는 특유의 냄새가 발생되어 예민한 사람들의 경우에는 상기 폴리우레탄수지로 제조된 베개를 사용하면 숙면을 취하지 못하는 문제점이 있다.These important pillows have recently been produced and sold in a variety of polyurethane resins (memory foam), but these are all simple polyurethane resins are not only harmful to the human body, but also unique to polyurethane resins. In the case of people who are sensitive to the smell occurs when using the pillow made of polyurethane resin there is a problem that can not take a good night's sleep.

또한 상기 폴리우레탄수지(메모리 폼)로 제조된 베개는 개개인의 머리 형상에 따라 편안하게 받쳐주는 역할은 하나 그 이상의 기능 즉 원적외선과 음이온 발생은 없으며, 상기 원적외선과 음이온 발생을 위해서는 베개 커버에 원적외선을 방사하는 세라믹분말과 접착성을 가지는 액상의 고분자화합물을 혼합하여 접착성 세라믹화합물을 만든 다음 그를 상기 베개커버를 만드는 천에 코팅하여 사용하였다.In addition, the pillow made of polyurethane resin (memory foam) is one or more functions that support comfort according to the shape of the individual head, there is no far infrared rays and negative ions generated, far infrared rays on the pillow cover to generate the far infrared rays and negative ions An adhesive ceramic compound was prepared by mixing a spinning ceramic powder and a liquid polymer compound having an adhesive property, and then coating it on a cloth for making the pillow cover.

그러나, 위와 같은 방법으로 제조된 원적외선을 방사하는 베개커버는, 커버가 오염돼 세탁할 경우 상기 코팅된 세라믹 성분이 쉽게 탈리되어 제품의 원적외선 방사효율이 현저히 떨어지거나 없어지는 문제점이 있다.However, the pillow cover for radiating far infrared rays manufactured by the above method has a problem that the coated ceramic component is easily detached when the cover is contaminated and washed so that the far-infrared radiation efficiency of the product is significantly reduced or disappeared.

본 발명은 상기와 같은 제반 문제점을 보완하고자 발명한 것으로서, 그 목적은 베개 속을 형성하는 폴리우레탄수지 즉 메모리 폼 그 자체에 폴리우레탄 폼 고유의 냄새를 제거하는 무향 탈취제를 첨가하여 냄새를 제거함과 동시에 원적외선과 음이온이 발생되는 음이온 발생제를 첨가하여 메모리 폼 그 자체에서 원적외선과 음이온이 발생되도록 하는 베개용 메모리 폼을 제공함에 있다. The present invention has been invented to solve the above problems, the object is to remove the odor by adding an unscented deodorant to remove the inherent odor of the polyurethane foam to the polyurethane resin that forms the pillow, that is, the memory foam itself; At the same time, by adding an anion generator that generates far infrared rays and negative ions to provide a memory foam for the pillow to generate far infrared rays and negative ions in the memory foam itself.

상기 목적을 달성하기 위한 본 발명에 따른 베개용 메모리 폼의 기술적 구성은, 연질몰드이며 저탄성, 고밀도의 베개용 메모리 폼에 있어서, 포리올 100중량부에 대하여 MDI 17~40중량%와, 원적외선 및 음이온발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위한 첨가제 3중량%이하를 발포기의 믹싱헤드를 통해서 온조기의 온수에 의해 50~60℃로 가열된 몰드에 충진시켜 5~10분간 경화시킨 후 성형물을 몰드에서 탈형시켜 상온에서 20~30시간 숙성시켜 제조된 것이다.Technical composition of the memory foam for the pillow according to the present invention for achieving the above object is a soft mold, low elastic, high density pillow memory foam, MDI 17-40% by weight, far infrared and 3% by weight or less of additives for removing anion and the inherent odor of polyurethane foam are filled in a mold heated to 50 ~ 60 ℃ by hot water of the heater through the mixing head of the foaming machine and cured for 5 ~ 10 minutes. The molded product is produced by demolding the mold at room temperature for 20-30 hours.

그리고, 상기 원적외선 및 음이온 발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위하여 세라믹, 바이오 스톤, 석영-몬조나이트, 편마암류 및 유운질 응회암, 무향 탈취제 중 어느 하나 또는 2가지 이상을 혼합하여 된 것이다.And, in order to remove the far-infrared rays and negative ions and the inherent odor of polyurethane foam, it is made by mixing any one or two or more of ceramic, biostone, quartz-monzonite, gneiss and oily tuff, fragrance deodorant.

이와 같은 특징을 갖는 본 발명의 베개용 메모리 폼을 형성하는데 있어 사용되는 성분 중 포리올(Polyfunctional Alcohol, Polyol)과 MDI(메틸렌 디페닐 디이소시아네이트(Methylene Diphenyl Diisocyanate)는 폴리우레탄 폼을 생산하는데 주원료로 사용되는 것으로서, 상기 포리올은 연질용, 반경질용, 경질용 포리올로 구분된다.Among the components used to form the pillow memory foam of the present invention having such a feature, polyfunctional alcohol (Polyolol) and MDI (Methylene Diphenyl Diisocyanate) are used as a main raw material to produce polyurethane foam As it is, the polyol is divided into soft, semi-hard, hard for polyol.

상기 포리올(Polyol)은 본 발명의 베개용 메모리 폼을 생산하는데 사용되는 것으로서, 그 종류는 하기 표 1과 같다.The polyol (Polyol) is used to produce the memory foam for the pillow of the present invention, the type is shown in Table 1 below.

제품product OH.Value(mgKOH/g)OH.Value (mgKOH / g) 점도(cps@25℃)Viscosity (cps @ 25 ℃) 특성characteristic Lupranol 2030Lupranol 2030 5555 500500 Hot cured FoamHot cured Foam Lupranol 2040Lupranol 2040 2828 1,1301,130 고 탄성&cold cured FoamHigh Elasticity & Cold Cured Foam Lupranol 2042Lupranol 2042 2727 1,2301,230 고 반응성 triolHigh reactivity triol Lupranol 2043Lupranol 2043 2929 780780 고 반응성 triolHigh reactivity triol Lupranol 2045Lupranol 2045 3535 850850 고 탄성&cold cured FoamHigh Elasticity & Cold Cured Foam GE-226GE-226 5555 1,2301,230 고 탄성&cold cured FoamHigh Elasticity & Cold Cured Foam GE-3000GE-3000 104104 510510 Hot cured FoamHot cured Foam SRF-500SRF-500 7171 370370 S/R Foam(Mold 용)S / R Foam (for Mold) PPG-7601PPG-7601 120120 500500 S/R Foam(Mold 용)S / R Foam (for Mold)

상기 MDI(메틸렌 디페닐 디이소시아네이트(Methylene Diphenyl Diisocyanate)는 본 발명의 베개용 메모리 폼을 생산하는데 사용되는 것으로서, 그 종류는 하기 표 2와 같다.The MDI (Methylene Diphenyl Diisocyanate) is used to produce the memory foam for the pillow of the present invention, the type is shown in Table 2 below.

제품product 용도 및 특성Usage and characteristics NCOcontentNCOcontent Vis.(25C)Vis. (25C) LUPRANATE MM103CLUPRANATE MM103C EA FoamEA Foam 29-3029-30 25-5025-50 LUPRANATE MP102LUPRANATE MP102 RIMRIM 22.4-23.422.4-23.4 550-750550-750 LUPRANATE MP105LUPRANATE MP105 ISFISF 27.6-28.627.6-28.6 110-180110-180 SUPRASEC 2030SUPRASEC 2030 S/R FoamS / R Foam 28-2928-29 175-225175-225 COSMONATE CG-29NCOSMONATE CG-29N S/R FoamS / R Foam 27.7-28.727.7-28.7 70-17070-170

이하 본 발명의 베개용 메모리 폼에 대하여 상세하게 설명하면 다음과 같다.Hereinafter, the pillow memory foam of the present invention will be described in detail.

먼저 포리올탱크에는 통상의 포리올을 충진시키거나, 통상의 포리올에 원적외선 및 음이온발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위하여 세라믹, 바이오 스톤, 석영-몬조나이트, 편마암류 및 유운질 응회암, 무향 탈취제 중 어느 하나 또는 2가지 이상이 혼합된 혼합물을 포리올 탱크에 충진시킨다. First, the polyol tank is filled with ordinary polyol, or ceramic, biostone, quartz-monzonite, gneiss and oily tuff, and fragrance-free deodorant to fill the ordinary polyol with far infrared rays and negative ions and to remove the unique smell of polyurethane foam. A mixture of any one or two or more of them is filled in a polyol tank.

그리고, MDI탱크에는 통상의 MDI(Diphenyl Methane Diisocyanate)액을 충진시켜 준다.The MDI tank is filled with a conventional MDI (Diphenyl Methane Diisocyanate) solution.

상기 MDI탱크와 포리올탱크에 충진된 MDI와 포리올은 믹싱헤드의 주입발포기에 의해 몰드에 주입시켜 주게 된다. MDI and polyol filled in the MDI tank and the polyol tank are injected into the mold by the injection foamer of the mixing head.

이때, 상기 믹싱헤드를 경유하여 몰드에 공급되는 MDI와 포리올은 계속적으로 순환을 실시하여 상기 MDI와 포리올이 응고되는 것을 방지한다.At this time, the MDI and the polyol supplied to the mold via the mixing head are continuously circulated to prevent the MDI and the polyol from solidifying.

또한, MDI와 포리올의 공급량을 조절하여 공급하게 되는데, 예컨데 믹싱헤드를 조작하여 MDI와 포리올을 공급 토출시킬 때에 MDI가 공급되는 공급량과 포리올이 공급되는 공급량을 적절하게 조정하여 본 발명에 따른 베개용 메모리 폼의 밀도 및 원상회복성을 조절한다. In addition, the supply amount of the MDI and the polyol is adjusted to supply, for example, when operating the mixing head to supply and discharge the MDI and the polyol for the pillow according to the present invention by appropriately adjusting the supply amount of the MDI supplied and the supply amount of the polyol Adjust the density and resilience of the memory foam.

상기 몰드로 공급되는 포리올의 량이 1초당 100g이라 할 때 경화제인 MDI는 17~40g인데, 그 이유는, 경화제인 MDI가 17g이하 들어가면 경화하는데 시간이 많이 소요되고 또 경화가 정상적으로 이뤄지지 않으며, 40g이상을 사용하면 경화가 너무 빨리 이뤄지는 문제점이 발생하고, 몰드에 제대로 충진되지 않아 형상이 되지 않는다. When the amount of polyol supplied to the mold is 100 g per second, the curing agent MDI is 17 to 40 g. The reason is that when the curing agent MDI enters less than 17 g, it takes a long time to cure and the curing is not normally performed. The problem occurs that hardening occurs too quickly, and the mold is not filled properly and does not become a shape.

따라서, 포리올이 100g 공급될 때 경화제인 MDI는 17~40g 사용됨이 바람직하다.Therefore, when 100 g of polyol is supplied, it is preferable that 17 to 40 g of MDI, which is a curing agent, is used.

또한, 상기 포리올에 투입되는 첨가제 즉 원적외선 및 음이온발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위한 성분 중 세라믹, 바이오 스톤, 석영-몬조나이트, 편마암류 및 유운질 응회암은 원적외선 및 음이온을 발생시키는 성분이고, 무향 탈취제는 탈취용도로 사용되는 것이다.In addition, among the additives to be added to the polyol, namely far-infrared rays and anions, and components to remove the inherent odor of polyurethane foam, ceramics, biostones, quartz-monzonite, gneiss and oil-based tuffs are components that generate far-infrared rays and anions. The fragrance-free deodorant is to be used for deodorization.

상기 원적외선 및 음이온을 발생시키는 성분으로 사용되는 세라믹, 바이오 스톤, 석영-몬조나이트, 편마암류 및 유운질 응회암의 사용량은 포리올 100중량부 대비 0.1~0.9중량부이고 탈취용도로 사용되는 무향 탈취제는 포리올 100중량부 대비 0.01~0.1중량부 이다.The amount of ceramic, biostone, quartz-monzonite, gneiss and oil-based tuff used as the component for generating far infrared rays and anions is 0.1 to 0.9 parts by weight based on 100 parts by weight of polyol and the fragrance deodorant used for deodorization is polyoriol. 0.01 to 0.1 parts by weight relative to 100 parts by weight.

상기 본 발명에 따른 메모리 폼 원료가 공급된 몰드는 본체에서 뚜껑을 상하로 개폐할 수 있도록 되어 있고, 본체와 두껑의 내부에는 발포를 빠르게 진행시킬 수 있도록 하기 위하여 온조기의 온수를 구비하였다. The mold supplied with the memory foam raw material according to the present invention is configured to open and close the lid up and down in the main body, and the hot water of the thermostat is provided in the main body and the lid so as to rapidly advance the foaming.

상기 몰드는 온조기의 온수에 의해 50~60℃로 유지시켜 주는 것이 바람직하고, MDI와 포리올을 혼합하여 충진시킨 상태에서 5~10분간 유지하여 폼의 경화가 충분히 진행되어지도록 하는 것이 바람직한데, 발포성형시간이 짧게되면 폼의 경화가 충분히 이루어지지 않아 성형이 불량하게 이루어지며, 폼의 경화시간을 길게 유지시키면 성형은 완전하게 이룰 수 있으나 생산성이 떨어지게 된다. The mold is preferably maintained at 50 ~ 60 ℃ by hot water of the warmer, it is preferable to keep the curing of the foam sufficiently by maintaining for 5 to 10 minutes in a state filled with MDI and polyol mixed, If the foam molding time is short, the foam is not cured sufficiently, the molding is made poorly, and if the curing time of the foam is maintained for a long time, the molding can be made completely, but the productivity is reduced.

상기와 같이 몰드에서 발포 및 성형이 완성된 성형 품을 탈형시켜, 상온에서 20~30시간동안 방치하여 충분히 숙성되도록 한다. As described above, the molded article foamed and molded in the mold is demolded, and left to stand at room temperature for 20 to 30 hours to sufficiently mature.

이와 같이 숙성된 성형 품 즉 메모리 폼은 사상 및 포장처리 하면 모든 공정이 끝나는 것이다. This matured molded product, that is, memory foam, is finished when all processes are finished.

상술한 바와 같은 본 발명의 베개용 메모리 폼은 그 메모리 폼 자체에 원적외선 및 음이온발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위한 첨가제가 첨가된 상태이므로 베개를 베고 휴식을 취하거나 잠을 잘 때에 상기 첨가제에서 발생되는 원적외선 및 음이온에 의해 편안한 휴식 또는 잠을 잘 수 있음은 물론, 인체의 신진대사를 원활하게 하고 피로회복, 신경안정, 활력증진, 피를 맑게 하는 등의 효과를 볼 수 있다. As described above, the pillow memory foam of the present invention is a state in which an additive for removing far infrared rays and negative ions and an inherent smell of polyurethane foam is added to the memory foam itself. Far-infrared rays and negative ions generated by the additives can be used to relax or sleep, as well as to facilitate the metabolism of the human body, fatigue recovery, nerve stability, vitality, and clear blood.

또한 무향 탈취제에 의해 폴리우레탄 폼의 고유한 냄새를 제거함으로 냄새에 예민한 사람의 경우에도 편안한 잠을 잘 수 있는 효과를 가지는 것이다.In addition, by removing the inherent odor of the polyurethane foam by the unscented deodorant, even if a person who is sensitive to the odor has the effect of a comfortable sleep.

Claims (2)

연질몰드이며 저탄성, 고밀도의 베개용 메모리 폼에 있어서, 포리올 100중량부에 대하여 MDI 17~40중량%와, 원적외선 및 음이온발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위한 첨가제 3중량%이하를 발포기의 믹싱헤드를 통해서 온조기의 온수에 의해 50~60℃로 가열된 몰드에 충진시켜 5~10분간 경화시킨 후 성형물을 몰드에서 탈형시켜, 상온에서 20~30시간 숙성시켜 된 것을 특징으로 하는 베개용 메모리 폼.In the soft mold, low elasticity and high density pillow memory foam, 17-40% by weight of MDI with respect to 100 parts by weight of polyol, and 3% by weight or less of additives to remove odor generated by far infrared rays and anions and polyurethane foam. After filling the mold heated to 50 ~ 60 ℃ by hot water of the temperature controller through the mixing head of the foaming machine to cure for 5 to 10 minutes, the molded product was demolded from the mold, aged for 20 to 30 hours at room temperature Memory foam for pillow. 제1항에 있어서, 상기 원적외선 및 음이온발생과 폴리우레탄 폼 고유의 냄새를 제거하기 위하여 세라믹, 바이오 스톤, 석영-몬조나이트, 편마암류 및 유운질 응회암, 무향 탈취제 중 어느 하나 또는 2가지 이상이 혼합된 것을 특징으로 하는 베개용 메모리 폼. The method of claim 1, wherein any one or two or more of ceramic, biostone, quartz-monzonite, gneiss and oily tuff, and fragrance deodorant are mixed in order to remove the far infrared rays and anion generation and the inherent odor of polyurethane foam. Memory foam for pillows characterized in that.
KR1020030070258A 2003-10-09 2003-10-09 Memory foam for pillow KR20050034361A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100672785B1 (en) * 2006-03-22 2007-01-22 윤재술 A onion for a pillow is making method
WO2010014752A2 (en) * 2008-07-29 2010-02-04 Hanscom, Eric A polyurethane elastic memory material that emits nano-negative ion far infrared rays and a method for preparing the same
KR101458545B1 (en) * 2013-05-29 2014-11-05 (주)서전에코 Polyurethanes foam composition and manufacturing method of polyurethanes foam using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100672785B1 (en) * 2006-03-22 2007-01-22 윤재술 A onion for a pillow is making method
WO2010014752A2 (en) * 2008-07-29 2010-02-04 Hanscom, Eric A polyurethane elastic memory material that emits nano-negative ion far infrared rays and a method for preparing the same
WO2010014752A3 (en) * 2008-07-29 2010-04-08 Hanscom, Eric A polyurethane elastic memory material that emits nano-negative ion far infrared rays and a method for preparing the same
KR101458545B1 (en) * 2013-05-29 2014-11-05 (주)서전에코 Polyurethanes foam composition and manufacturing method of polyurethanes foam using the same

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