KR102555702B1 - Spunbond non-woven fabric for a diaper using polypropylene modified cross sectional spinning technique - Google Patents
Spunbond non-woven fabric for a diaper using polypropylene modified cross sectional spinning technique Download PDFInfo
- Publication number
- KR102555702B1 KR102555702B1 KR1020210140704A KR20210140704A KR102555702B1 KR 102555702 B1 KR102555702 B1 KR 102555702B1 KR 1020210140704 A KR1020210140704 A KR 1020210140704A KR 20210140704 A KR20210140704 A KR 20210140704A KR 102555702 B1 KR102555702 B1 KR 102555702B1
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- KR
- South Korea
- Prior art keywords
- nonwoven fabric
- sheet
- cross
- polypropylene
- top sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- D—TEXTILES; PAPER
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- D—TEXTILES; PAPER
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- D—TEXTILES; PAPER
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- D—TEXTILES; PAPER
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- D—TEXTILES; PAPER
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Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
본 발명은 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포에 관한 것으로, 신체와 접촉하는 상부로부터 탑 시트(Top Sheet), 흡수분산층 시트(ADL Sheet), 고흡수성수지 시트(SAP Sheet), 백 시트(Back Sheet)의 순으로 겹쳐서 이루어지는 열가소성 폴리올레핀계 기저귀용 부직포에 있어서, 상기 탑 시트(Top Sheet)는 단면형태가 편평형(A), 십자가형(B), 오뚜기형(C), 사각형(D), 삼각형(E) 중에서 선택되는 1종 이상의 이형단면사로 구성되는 폴리프로필렌(PP) 스펀본드 장섬유 부직포로 이루어지되, 상기 폴리프로필렌(PP) 장섬유 부직포는 섬도 2 ~ 5데니어(denier) 범위의 필라멘트로 이루어지는 하부 웹(S1) 위에 섬도 4 ~ 7데니어(denier) 범위의 필라멘트로 이루어지는 상부 웹(S2)을 엠보롤(Embo roll)에 통과시켜 접합되는 것을 특징으로 한다.
본 발명에 의한 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포는 기저귀 착용자의 피부에 닿는 탑 시트(Top Sheet) 부위에 사용됨으로써 인체에서 배출되는 소변 등을 빠른 시간 내에 흡수 및 투과시키기 때문에 흡한속건성이 뛰어나 쾌적성이 탁월하며, 또한 탑 시트(Top Sheet) 자체에 환경과 인체에 친화적인 항균성능과 냉감성능을 부여함으로써 위생적이고 차별화된 기능을 발휘할 수 있는 장점이 있다.The present invention relates to a spunbond nonwoven fabric for diapers to which polypropylene modified cross-section spinning technology is applied, and from the top in contact with the body, a top sheet, an absorption and dispersion layer sheet (ADL Sheet), and a super absorbent polymer sheet (SAP Sheet) In the nonwoven fabric for a thermoplastic polyolefin diaper formed by overlapping a back sheet in order, the top sheet has a cross-sectional shape of flat (A), cross shape (B), crow shape (C), and rectangular shape. It consists of a polypropylene (PP) spunbond long fiber nonwoven fabric composed of at least one type of deformed cross-section yarn selected from (D) and triangle (E), and the polypropylene (PP) long fiber nonwoven fabric has a fineness of 2 to 5 denier (denier). ) is bonded by passing an upper web (S2) made of filaments in the range of 4 to 7 denier through an embo roll on the lower web (S1) made of filaments in the range.
The spunbond nonwoven fabric for diapers to which the polypropylene modified cross-section spinning technology according to the present invention is applied is used on the top sheet part that comes into contact with the diaper wearer's skin, so that it absorbs and transmits urine discharged from the human body in a short time. It is quick-drying, so it has excellent comfort, and it has the advantage of being hygienic and differentiated by giving the top sheet itself friendly antibacterial and cooling properties to the environment and human body.
Description
본 발명은 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포에 관한 것으로, 보다 상세하게는 유아/성인용 기저귀 착용자의 피부에 닿는 탑 시트(Top Sheet) 부위에 배설된 소변을 빠른 시간 내에 흡수 및 투과시키기 위해 다양한 형태의 이형단면사로 구성하여 흡한속건성이 뛰어나게 제조됨으로써 쾌적성이 향상된 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포에 관한 것이다.The present invention relates to a spunbond nonwoven fabric for diapers to which a polypropylene shaped cross-section spinning technology is applied, and more particularly, to quickly absorb and absorb urine excreted on a top sheet part that comes in contact with the skin of an infant/adult diaper wearer. The present invention relates to a spunbond nonwoven fabric for diapers to which polypropylene modified cross-section spinning technology is applied, which is composed of various shapes of deformed cross-section yarns for permeation and is manufactured with excellent sweat perspiration and quick-drying properties, thereby improving comfort.
‘일회용 흡수제품’이라 함은 생리작용에 의해 배설되는 배설물을 흡수하는 제품, 즉 소변이나 대변의 분비물, 월경, 질분리물 등을 흡수하는 제품을 말하는 것으로, 보다 구체적으로는 유아 또는 성인이 사용하는 일회용 기저귀(Diaper), 생리대(Sanitary napkin) 또는 팬티라이너(Panty liner) 등을 말한다.'Disposable absorbent product' refers to a product that absorbs excretion excreted by physiological action, that is, a product that absorbs urine or feces secretion, menstruation, vaginal separation, etc. More specifically, it is used by infants or adults. Disposable diapers, sanitary napkins, or panty liners.
최근 생활수준의 향상으로 인하여 유아나 노인, 환자들을 위해 부직포나 종이로 제조된 일회용 흡수제품, 즉 기저귀의 사용이 증가되고 있다. 이러한 형태의 기저귀 제품은 상하부 시트부재와 이 시트부재 사이에 배치된 액체 흡수층으로 구성되어 있으며, 통상적으로 접착테이프 등과 같은 고정부재에 의해 사용자의 신체에 착탈 가능한 구조로 형성되어 있다.Due to the recent improvement in living standards, the use of disposable absorbent products made of nonwoven fabric or paper, that is, diapers, for infants, the elderly, and patients is increasing. This type of diaper product is composed of upper and lower sheet members and a liquid absorbing layer disposed between the sheet members, and is usually formed in a structure that can be detached from the user's body by a fixing member such as an adhesive tape.
이러한 기저귀에 많이 사용되는 스펀본드 장섬유 부직포는 화학섬유를 방사공정에 의해서 만든 부직포를 지칭하는 것으로, 노즐에서 나오는 섬유를 주행하는 컨베이어 위에 날려서 컨베이어 위에 긴 섬유의 층을 형성하여 제조한 부직포의 일종으로서, 제조공정의 능률이 좋고 경제적으로도 유리한 장점이 있다.Spunbond long fiber nonwoven fabric, which is widely used in diapers, refers to a nonwoven fabric made by spinning chemical fibers. As a result, the efficiency of the manufacturing process is good and there is an advantage economically.
또한, 멜트블로운 부직포는 멜트블로운 공정에서 제조된 부직포를 지칭하는 것으로, 여기에 사용된 웹은 극세섬유이기 때문에 부드럽고 보온성이 우수하며, 그리고 고도의 여과성능을 갖는 등 일반 부직포에서 얻을 수 없는 장점을 가지지만 웹 강도가 매우 약한 것이 큰 결점이다.In addition, meltblown nonwoven fabric refers to nonwoven fabric manufactured in the meltblown process, and since the web used here is a microfiber, it is soft and has excellent heat retention, and has high filtration performance, which cannot be obtained from general nonwoven fabric. Although it has an advantage, it is a major drawback that the web strength is very weak.
상기와 같은 스펀본드 및 멜트블로운 부직포 제조공정에서 가장 많이 쓰이는 원료로는 일반적으로 폴리에틸렌, 폴리프로필렌, 폴리에틸렌텔레프탈레이트 등의 폴리올레핀계 수지 및 폴리아미드계 수지이며, 이들 수지를 용융 방사하여 섬유화하고 웹을 형성하여 열접착방식에 의해 부직포를 제조한다.In the above spunbond and meltblown nonwoven fabric manufacturing processes, the raw materials most commonly used are polyolefin-based resins and polyamide-based resins such as polyethylene, polypropylene, and polyethylene terephthalate. To form a nonwoven fabric by the thermal bonding method.
그런데, 종래에 공지된 폴리프로필렌 장섬유로 제조된 스펀본드 부직포는 결정영역이 많아 유연하지 못하고 우수한 촉감을 갖지 못하는 결점이 있었다. 따라서 상기 단점을 보완하는 방법으로 폴리프로필렌 단섬유를 공기분사 혹은 카딩하여 웹을 만들고 가열된 롤러로 접착시키는 공법, 혹은 에어스루 공법을 통한 단섬유 부직포가 있으나, 이러한 부직포는 감촉은 좋지만 내보풀성과 강도에 문제가 있고 위생재의 슬림화에 따른 생산성의 저하 및 물리적 특성의 한계가 있어 바람직하지 않았다.However, the spunbond nonwoven fabric made of conventionally known polypropylene long fibers has many crystal regions, so it is not flexible and does not have an excellent touch. Therefore, as a method to compensate for the above disadvantages, there is a method of air-spraying or carding polypropylene short fibers to make a web and bonding them with a heated roller, or a short-fiber nonwoven fabric through an air-through method. It was undesirable because of problems with strength, decrease in productivity due to slimming of sanitary materials, and limitations in physical properties.
또한, 폴리에틸렌 장섬유로 제조된 스펀본드 부직포는 비교적 유연하고 양호한 촉감은 갖지만 방사에 어려움이 있고 강도가 떨어지며, 신도가 높아서 기저귀나 생리대와 같은 위생재나 산업용으로 적용시 제한적이었다.In addition, the spunbond nonwoven fabric made of polyethylene long fibers is relatively flexible and has a good touch, but is difficult to spin, has low strength, and has high elongation, so it is limited in sanitary materials such as diapers and sanitary napkins or for industrial use.
이에 따라 본 발명에서는 폴리프로필렌 이형단면 방사기술을 적용함으로써 기저귀 착용시 착용자의 피부에 닿는 상층부 부위가 배설된 소변을 빠른 시간 내에 흡수 및 투과시킴과 동시에 이형단면사를 적용한 스펀본드 부직포의 항균 및 냉감성능을 부여하기 위해 스펀본드 부직포 제조에 따른 최적의 생산공정 시스템을 구축하였다.Accordingly, in the present invention, by applying the polypropylene shaped cross-section spinning technology, the upper part of the diaper that comes into contact with the wearer's skin absorbs and transmits the excreted urine in a short time, and at the same time, antibacterial and cooling sensation of the spunbond nonwoven fabric to which the shaped cross-section yarn is applied In order to impart performance, an optimal production process system was established according to the manufacture of spunbond nonwoven fabrics.
종래 폴리프로필렌 이형단면사 제조에 관한 일 예로서, 대한민국 공개특허 제10-2018-0051069호에는 폴리프로필렌 원착필라멘트를 코어사와 이펙트사로 공급하여 에어텍스쳐링한 에어텍스쳐사를 T/M 100∼300으로 연사하여 경,위사로 공급하여 직물을 제직하고 정련 및 발수가공을 한 후, 직물의 표면 또는 이면을 60~80℃로 시레작업을 한 후, 연질 폴리우레탄수지와 경질 폴리우레탄수지를 중량비 35:65~45:55로 혼합한 혼합폴리우레탄 수지 75∼90중량%, 경화제 1∼5중량%, 소광제 1∼5중량%, 잔부로서 톨루엔을 함유한 코팅액으로 상기 직물을 코팅한 후, 건조하는 것을 특징으로 하는 폴리프로필렌 이형단면 원착사를 이용한 내광성이 우수한 차양막용 직물의 제조방법을 개시하고 있으나, 이는 원단의 색상 선명도 향상은 물론 내광성이 우수해 일광견뢰도가 향상되고, 오염도 저하, 내수압 향상 및 코팅면의 sticky현상과 chalk mark 발생을 방지하고 균제도가 뛰어난 친환경적인 차양막용 원단을 제공하는 것을 기술적 과제로 하고 있을 뿐이었다.As an example of conventional polypropylene modified cross-section yarn production, Korean Patent Laid-open Publication No. 10-2018-0051069 discloses that polypropylene dope filaments are supplied as core yarns and effect yarns, and air-textured yarns are twisted at T/M 100-300. After weaving the fabric by supplying it with warp and weft yarns, scouring and water-repellent processing, the surface or back of the fabric is seared at 60 ~ 80 ℃, and soft polyurethane resin and hard polyurethane resin are mixed at a weight ratio of 35:65 After coating the fabric with a coating solution containing 75 to 90% by weight of a mixed polyurethane resin mixed at ~45:55, 1 to 5% by weight of a curing agent, 1 to 5% by weight of a matting agent, and toluene as the balance, drying Disclosed is a method for manufacturing a fabric for sunshades with excellent light resistance using polypropylene modified cross-section dope-dyed yarn, but this improves the color clarity of the fabric as well as improves light fastness due to excellent light resistance, reduces contamination, improves water pressure and coating It was merely a technical task to prevent the sticky phenomenon of cotton and the generation of chalk marks and to provide an eco-friendly fabric for awnings with excellent uniformity.
그와는 달리, 본 발명이 목적으로 하는 기저귀는 착용자의 연약한 피부에 직접 닿아 착용되므로 수분을 빨리 흡수하고 투과시켜 쾌적하게 하는 상층부 부직포의 역할이 중요하다. 또한 장시간 착용되는 기저귀는 땀이 발생하였을 때 부직포 자체에 수분을 함수하지 않고 투과시켜야 건조가 빨리 이루어져 표면의 쾌적함이 좋아진다.In contrast, since the diaper of the present invention is worn in direct contact with the wearer's delicate skin, the role of the upper nonwoven fabric to quickly absorb and permeate moisture to make it comfortable is important. In addition, when sweat is generated in diapers worn for a long time, the nonwoven fabric itself should be permeated without moisture to dry quickly, so that the comfort of the surface is improved.
따라서 기저귀용 부직포는 빠른 흡수와 재방출, 건조 등의 수분특성이 요구되며, 또한 땀냄새 억제 및 피부질환 예방을 위해 세균번식 억제를 통한 항균성과 더불어 청량감(냉감) 등 쾌적성이 중요하다. 이에 기저귀용 부직포의 수분특성과 더불어 항균, 쾌적감에 대한 차별화된 제품 개발이 요구되고 있다.Therefore, nonwoven fabrics for diapers require moisture characteristics such as rapid absorption, re-release, and drying, and comfort such as coolness (coolness) as well as antibacterial properties through suppression of bacterial propagation are important to suppress sweat odor and prevent skin diseases. Accordingly, there is a demand for the development of differentiated products for antibacterial and pleasant sensations along with moisture characteristics of nonwoven fabrics for diapers.
본 발명에서는 현재까지 폴리프로필렌 장섬유 이형단면사로 제작된 부직포가 실용화되지 않음을 확인함에 따라, 폴리프로필렌 장섬유 이형단면 방사기술을 적용함에 있어 균일한 웹(Web)을 형성하기 어려운 기술적 제약을 극복하고 기저귀용 탑 시트(Top Sheet)용으로 사용하기 위한 폴리프로필렌 장섬유 부직포를 제조하였는데, 이는 방사구금(Nozzle) 설계 및 방사조건을 설정하고 연신율에 따른 적합한 물성제어기술을 개발하고 성능 발현을 위한 최적의 공정조건을 설정함으로써 본 발명을 완성하게 된 것이다.In the present invention, as it is confirmed that nonwoven fabrics made of polypropylene long fiber shaped yarns have not been put into practical use to date, the technical limitations of forming a uniform web are overcome in applying the polypropylene long fiber shaped yarn spinning technology. and produced a polypropylene long fiber nonwoven fabric for use as a top sheet for diapers, which set the nozzle design and spinning conditions, developed a suitable physical property control technology according to the elongation rate, and developed The present invention was completed by setting the optimal process conditions.
본 발명의 목적은 기저귀 착용자의 피부에 닿는 탑 시트(Top Sheet) 부위에 배설된 소변을 빠른 시간 내에 흡수 및 투과시키기 위해 다양한 형태의 이형단면사로 구성하여 흡한속건성이 뛰어나게 제조됨으로써 쾌적성이 향상되며, 또한 탑 시트(Top Sheet) 자체에 항균 및 냉감성능을 부여함으로써 차별화된 기능을 발휘할 수 있는 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포를 제공하는 것이다.An object of the present invention is to improve the comfort by being manufactured with excellent sweat absorption and quick-drying by constructing various types of deformed cross-section yarns in order to quickly absorb and transmit urine excreted on the top sheet part that comes into contact with the diaper wearer's skin. In addition, it is to provide a spunbond nonwoven fabric for diapers to which polypropylene shaped cross-section spinning technology is applied, which can exhibit differentiated functions by imparting antibacterial and cooling performance to the top sheet itself.
본 발명의 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포는, 신체와 접촉하는 상부로부터 탑 시트(Top Sheet), 흡수분산층 시트(ADL Sheet), 고흡수성수지 시트(SAP Sheet), 백 시트(Back Sheet)의 순으로 겹쳐서 이루어지는 열가소성 폴리올레핀계 기저귀용 부직포에 있어서, 상기 탑 시트(Top Sheet)는 단면형태가 편평형(A), 십자가형(B), 오뚜기형(C), 사각형(D), 삼각형(E) 중에서 선택되는 1종 이상의 이형단면사로 구성되는 폴리프로필렌(PP) 스펀본드 장섬유 부직포로 이루어지되, 상기 폴리프로필렌(PP) 스펀본드 장섬유 부직포는 섬도 2 ~ 5데니어(denier) 범위의 필라멘트가 섬도별로 각각 20 ~ 30wt%씩 균일하게 배열되어 이루어지는 하부 웹(S1) 위에 섬도 4 ~ 7데니어(denier) 범위의 필라멘트가 섬도별로 각각 20 ~ 30wt%씩 균일하게 배열되어 이루어지는 상부 웹(S2)을 엠보롤(Embo roll)에 통과시켜 접합되는 것을 특징으로 한다.The spunbond nonwoven fabric for diapers to which the polypropylene shaped cross-section spinning technology of the present invention is applied is, from the upper part in contact with the body, a top sheet, an absorption and dispersion layer sheet (ADL Sheet), a super absorbent polymer sheet (SAP Sheet), a bag In the nonwoven fabric for thermoplastic polyolefin diapers formed by overlapping back sheets in order, the top sheet has a cross-sectional shape of flat (A), cross (B), crow (C), and square (D). ), and a polypropylene (PP) spunbond long fiber nonwoven fabric composed of at least one type of deformed cross-section yarn selected from triangles (E), wherein the polypropylene (PP) spunbond long fiber nonwoven fabric has a fineness of 2 to 5 denier (denier). ) on the lower web (S1) in which filaments in the range of 20 to 30 wt% are uniformly arranged for each fineness, and filaments in the range of 4 to 7 denier are uniformly arranged at 20 to 30 wt% for each fineness It is characterized in that the web (S2) is bonded by passing through an embo roll (Embo roll).
본 발명의 바람직한 실시예에 따르면, 상기 탑 시트(Top Sheet)는 평량 9 ~ 13gsm(g/㎡) 및 두께 0.1 ~ 0.3㎜의 섬유간 자체 본딩에 형성되는 섬유 구조체로서, 상기 탑 시트(Top Sheet)를 구성하는 이형단면사는 이형단면의 종횡비가 평균 1 : 2 ~ 6 이내의 비율을 갖는다.According to a preferred embodiment of the present invention, the top sheet is a fibrous structure formed by self-bonding between fibers having a basis weight of 9 to 13 gsm (g/m 2 ) and a thickness of 0.1 to 0.3 mm. ), the deformed cross-section yarns have an average aspect ratio of 1: 2 to 6.
또한, 상기 탑 시트(Top Sheet)는 항균성을 부여하기 위해, ZnO(산화아연), Cu(구리), Ag(은), 흑운모(Biotite) 분말 중에서 선택된 1종 이상의 무기질 항균제; 및 은행잎 추출물, 알로에 추출물, 키토산, 계피, 코코넛 오일, 편백나무 오일 중에서 선택된 1종 이상의 천연 항균제를 0.1 ~ 0.5wt% 농도의 코팅액으로 코팅하며, 이와는 별도로 상기 탑 시트(Top Sheet)는 냉감성을 부여하기 위해, TiO2 분말; 및 목단피(모란뿌리의 껍질) 추출물, 자일리톨(Xylitol), 에리스리톨(Erythritol), 페퍼민트(Peppermint) 오일 중에서 선택된 1종 이상의 정유 추출물을 1 ~ 3wt% 농도의 코팅액으로 코팅하는 것을 특징으로 한다.In addition, the top sheet (Top Sheet), in order to impart antimicrobial properties, at least one inorganic antimicrobial agent selected from ZnO (zinc oxide), Cu (copper), Ag (silver), biotite (Biotite) powder; And at least one natural antibacterial agent selected from ginkgo leaf extract, aloe extract, chitosan, cinnamon, coconut oil, and cypress tree oil is coated with a coating solution at a concentration of 0.1 to 0.5 wt%. To impart, TiO 2 powder; And one or more essential oil extracts selected from modanhu (peony root bark) extract, xylitol, erythritol, and peppermint oil are coated with a coating solution at a concentration of 1 to 3 wt%.
본 발명에 의한 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포는 기저귀 착용자의 피부에 닿는 탑 시트(Top Sheet) 부위에 사용됨으로써 인체에서 배출되는 소변 등을 빠른 시간 내에 흡수 및 투과시키기 때문에 흡한속건성이 뛰어나 쾌적성이 탁월하며, 또한 탑 시트(Top Sheet) 자체에 환경과 인체에 친화적인 항균성능과 냉감성능을 부여함으로써 위생적이고 차별화된 기능을 발휘할 수 있는 장점이 있다.The spunbond nonwoven fabric for diapers to which the polypropylene modified cross-section spinning technology according to the present invention is applied is used on the top sheet part that comes into contact with the diaper wearer's skin, so that it absorbs and transmits urine discharged from the human body in a short time. It is quick-drying, so it has excellent comfort, and it has the advantage of being hygienic and differentiated by giving the top sheet itself friendly antibacterial and cooling properties to the environment and human body.
도 1은 일반적인 팬티형 기저귀를 나타내는 사시도이다.
도 2는 본 발명에 의한 탑 시트-흡수분산층 시트-고흡수성수지 시트(SAP Sheet)-백 시트(Back Sheet)의 순으로 겹쳐서 이루어지는 기저귀용 부직포를 나타내는 구성도이다.
도 3은 본 발명에 의한 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포(탑 시트)를 제조하는 공정개략도이다.1 is a perspective view showing a general pants-type diaper.
2 is a configuration diagram showing a nonwoven fabric for a diaper formed by overlapping a top sheet-absorbent dispersion layer sheet-superabsorbent polymer sheet (SAP Sheet)-back sheet according to the present invention in this order.
3 is a schematic diagram of a process for manufacturing a spunbond nonwoven fabric (top sheet) for diapers to which the modified cross-section spinning technology according to the present invention is applied.
이하에서는 도면을 참조하여 본 발명에 의한 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포에 대하여 설명하기로 하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 사람이 발명을 용이하게 실시할 수 있을 정도로 예시하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Hereinafter, a spunbond nonwoven fabric for diapers to which the polypropylene modified cross-section spinning technology according to the present invention is applied will be described with reference to the drawings, but this will facilitate the invention by those skilled in the art to which the present invention belongs. It is intended to illustrate as much as possible, but does not mean that the technical spirit and scope of the present invention are thereby limited.
도 1, 2에 도시된 바와 같이, 통상적인 유아용 기저귀는 백시트 부직포(10)의 전면 상단부에 루프(20)가 부착되어 있고, 이 백시트 부직포(10)의 양측 후면에서 연장된 후크(30)가 루프(20)와 결합되어 기저귀가 결착되며, 착용자의 피부에 닿는 상부로부터 탑 시트(Top Sheet) - 흡수분산층 시트(ADL Sheet) - 고흡수성수지 시트(SAP Sheet) - 백 시트(Back Sheet) 부직포(10)로 이루어져 있다.As shown in FIGS. 1 and 2, a typical baby diaper has a
일반적으로, 부직포 웹(web)은 멜트블로잉(meltblowing), 스펀본딩(spunbonding), 에어스루본딩(air-through bonding), 하이드로인탱글링(hydroentangling), 스펀레이싱(spunlacing), 에어레잉(airlaying), 카딩(carding) 및 기타 적합한 공정과 같은 다양한 성형 공정으로부터 생산될 수 있다. 부직포 웹의 평량(gsm)은 웹의 용도에 따라 다르지만 대부분의 경우에 약 300g/㎡ 이하로서, 평량은 부직포 웹의 단위면적당 모든 층의 중량으로 산출된다.In general, nonwoven webs are used by meltblowing, spunbonding, air-through bonding, hydroentangling, spunlacing, airlaying, It can be produced from a variety of forming processes such as carding and other suitable processes. The basis weight (gsm) of the nonwoven web varies depending on the use of the web, but in most cases is about 300 g / m or less, and the basis weight is calculated by the weight of all layers per unit area of the nonwoven web.
본 발명에서 말하는 스펀본드(spunbond) 부직포는 열가소성 수지 압출물의 용융 압출에 의해 고속도 공기에 의해 켄칭 및 연신된 가닥으로 형성되어 표면상에 수집되고, 열 또는 압력으로 결합된 필라멘트를 강화시킨 부직포를 의미한다.The spunbond nonwoven fabric referred to in the present invention refers to a nonwoven fabric formed by melt extrusion of a thermoplastic resin extrudate into strands quenched and drawn by high-speed air, collected on the surface, and reinforced with filaments bonded by heat or pressure. do.
그러나 최근 신종 코로나바이러스 감염증(코로나19) 확산 영향으로 마스크, 방호복 등에 쓰이는 부직포 수요량이 급증하고 있으며, 스펀본드(SB) 부직포는 모든 마스크 겉면에 들어가는 소재로써 세계인의 필수용품이 된 마스크 수요가 늘어나면서 기본 소재인 스펀본드 부직포 구하기도 점점 어려워지고 있는 실정이므로, 향후 본 발명을 적용하여 다양한 분야의 부직포 용도에 더욱 확대될 예정이다.However, due to the recent spread of the new coronavirus infection (Corona 19), the demand for nonwoven fabrics used in masks and protective clothing is rapidly increasing. Since it is becoming increasingly difficult to obtain a spunbond nonwoven fabric, which is a basic material, it is expected that the present invention will be further expanded to nonwoven fabric applications in various fields by applying the present invention in the future.
본 발명은 유아/성인용 기저귀의 피부에 직접 닿는 상층부 부직포에 요구되는 수분특성은 배설된 소변을 빠른 시간 내에 투과시켜 빠른 흡수와 재방출, 분산작용이 필요한 반면, 일반적인 면, 텐셀, PET 등의 경우 자체의 흡수성은 우수하나, 그로인해 수분을 흡수층 쪽으로 전달하지 못하고 함수하는 성질이 있어 기저귀 상층부 재질로는 적합하지 않다.In the present invention, the moisture characteristics required for the upper nonwoven fabric in direct contact with the skin of infant/adult diapers require rapid absorption, re-release, and dispersion by permeating the excreted urine in a short time, whereas in the case of general cotton, Tencel, PET, etc. Although its absorbency is excellent, it is not suitable as a material for the upper layer of the diaper because it does not transfer moisture to the absorbent layer and has a property of becoming wet.
이에 폴리프로필렌(PP)의 경우에는 섬유 자체가 소수성을 가지고 있으며, 표면에 코팅되어있는 친수유제의 기능을 이용하여 수분을 빠르게 흡수층쪽으로 전달하는 특성이 있기 때문에 착용자의 피부에 닿는 부분을 건조하게 유지하기에 적합한 소재라는 점에 착안하여 연구개발을 진행하였다.Therefore, in the case of polypropylene (PP), the fiber itself has hydrophobicity and uses the function of the hydrophilic emulsion coated on the surface to quickly transfer moisture to the absorption layer, so the part that comes in contact with the wearer's skin is kept dry. Focusing on the fact that it is a material suitable for
본 발명은 신체와 접촉하는 상부로부터 탑 시트(Top Sheet), 흡수분산층 시트(ADL Sheet), 고흡수성수지 시트(SAP Sheet), 백 시트(Back Sheet)의 순으로 겹쳐서 이루어지는 열가소성 폴리올레핀계 기저귀용 스펀본드 부직포에 있어서, 상기 탑 시트(Top Sheet)는 단면형태가 편평형(A), 십자가형(B), 오뚜기형(C), 사각형(D), 삼각형(E) 중에서 선택되는 1종 이상의 이형단면사로 구성되는 폴리프로필렌(PP) 스펀본드 장섬유 부직포로 이루어지되, 상기 폴리프로필렌(PP) 스펀본드 장섬유 부직포는 섬도 2 ~ 5데니어(denier) 범위의 필라멘트로 이루어지는 하부 웹(S1) 위에 섬도 4 ~ 7데니어(denier) 범위의 필라멘트로 이루어지는 상부 웹(S2)을 엠보롤(Embo roll)에 통과시켜 접합됨으로써 인체에서 배출되는 소변 등을 빠른 시간 내에 흡수 및 투과시키기 때문에 쾌적성이 탁월한 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포를 개발하게 된 것이다.The present invention is for a thermoplastic polyolefin diaper formed by overlapping a top sheet, an absorption and distribution layer sheet (ADL Sheet), a super absorbent polymer sheet (SAP Sheet), and a back sheet in the order from the top in contact with the body. In the spunbond nonwoven fabric, the top sheet has a cross-sectional shape of at least one type selected from among flat (A), cross (B), crow (C), square (D), and triangular (E) shapes. It is made of polypropylene (PP) spunbond long fiber nonwoven fabric composed of single-sided yarns, and the polypropylene (PP) spunbond long fiber nonwoven fabric has a fineness on the lower web (S1) made of filaments in the range of 2 to 5 denier. Polypropylene with excellent comfort because the upper web (S2) made of filaments in the range of 4 to 7 denier is passed through an embo roll and bonded to quickly absorb and transmit urine discharged from the human body. This led to the development of a spunbond nonwoven fabric for diapers to which the deformed cross-section spinning technology was applied.
상기 스펀본드 부직포 제조공정은 방사웹 형성과 웹 결합공정이 연속적으로 이루어지므로 각 공정조건의 변화는 다른 연관된 조건의 동시 변화가 필요하다. 이에 공정별 최적조건 확보 기술이 매우 중요하기 때문에 각 제조사마다 축적된 노하우에 따라 기술력이 형성되고 있는 실정이다.In the spunbond nonwoven fabric manufacturing process, since the spinning web formation and the web bonding process are continuously performed, a change in each process condition requires a simultaneous change in other related conditions. Therefore, since the technology for securing the optimal conditions for each process is very important, the technology is being formed according to the know-how accumulated by each manufacturer.
도 3에 도시된 단계별 공정조건과 같이, 이형단면 방사기술은 노즐, 용융물의 특성, 방사조건 등에 의해 물성변화를 가져오는데, 이는 노즐 길이, 단면 형상, 노즐 수, 노즐 배열, 노즐 재질, 용융물의 점도, 표면장력, 토출량, 방사온도, 냉각 풍속, 섬도 등을 조절함으로써 구현되는 기술로서, 본 발명은 상기 공정상의 조건을 모두 충족시킴으로써 폴리프로필렌 장섬유 이형단면 방사기술을 완성하였다.Like the step-by-step process conditions shown in FIG. 3, the special cross-section spinning technology brings about changes in physical properties by nozzles, melt characteristics, spinning conditions, etc., which are nozzle length, cross-sectional shape, number of nozzles, nozzle arrangement, nozzle material, and melt As a technology implemented by adjusting viscosity, surface tension, discharge amount, spinning temperature, cooling wind speed, fineness, etc., the present invention has completed polypropylene long fiber shaped cross-section spinning technology by satisfying all of the process conditions.
상기 이형단면 방사기술을 적용한 필라멘트는 이형단면의 골 부분의 모세관현상으로 흡수효과가 상승되고 표면적의 증가로 속건기능이 발현되며, 현재까지 삼각단면, 사각다면, Y형, 편평 등의 이형단면사는 주로 PET 소재를 이용한 아웃도어용으로 개발이 많이 되어 있으나, PP의 경우에는 구금에서의 방사성, 웹(web) 균일성 등 공정상 생산성 및 효율성 등 최적 공정조건을 확립함에 있어 PET 등의 소재와 다르게 고품질의 이형단면 형성이 어려워 제품으로의 생산이 매우 드문 실정인데, 이는 설계 제작된 노즐의 단면과 이 노즐을 통해 제조된 섬유의 단면은 노즐, 용융물의 성질 및 방사조건에 따라 단면이형도가 좌우된다.The filament to which the special cross-section spinning technology is applied has an increased absorption effect due to the capillary phenomenon of the trough of the irregular cross-section and an increase in surface area, resulting in a quick-drying function. It is mainly developed for outdoor use using PET materials, but in the case of PP, it is different from materials such as PET in establishing optimal process conditions such as spinnability in confinement, web uniformity, productivity and efficiency in the process. It is very rare to produce a product as it is difficult to form a high-quality irregular cross-section. This is because the cross-section of the designed nozzle and the cross-section of the fiber manufactured through this nozzle depend on the nozzle, the properties of the melt, and the spinning conditions. .
상기 탑 시트(Top Sheet)는 웹(web)의 균일도 및 밀도 조정을 위해 노즐 간격을 변경하여 설계된 단면형태가 편평형(A), 십자가형(B), 오뚜기형(C), 사각형(D), 삼각형(E) 중에서 선택되는 1종 이상의 이형단면사로 구성되는 폴리프로필렌(PP) 스펀본드 장섬유 부직포로 이루어지며, 상기 폴리프로필렌(PP) 스펀본드 장섬유 부직포는 섬도 2 ~ 5데니어(denier) 범위의 필라멘트로 이루어지는 하부 웹(S1) 위에 섬도 4 ~ 7데니어(denier) 범위의 필라멘트로 이루어지는 상부 웹(S2)을 엠보롤(Embo roll)에 통과시켜 접합됨으로써 인체에서 배출되는 소변 등을 빠른 시간 내에 흡수 및 투과시키게 되는데, 이때, 상기 하부 웹(S1)과 상부 웹(S2)의 성능 및 결합성 강화를 위해 하부 웹(S1)은 2 내지 5데니어의 섬도를 갖는 필라멘트가 섬도별로 각각 20 ~ 30wt%씩 균일하게 배열되며, 상부 웹(S2)도 4 내지 7데니어의 섬도를 갖는 필라멘트가 섬도별로 각각 20 ~ 30wt%씩 균일하게 배열된다.The cross-sectional shape of the top sheet designed by changing the nozzle spacing to adjust the uniformity and density of the web is flat (A), cross (B), crow (C), square (D), It is made of polypropylene (PP) spunbond long fiber nonwoven fabric composed of one or more types of deformed cross-section yarns selected from triangles (E), and the polypropylene (PP) spunbond long fiber nonwoven fabric has a fineness in the range of 2 to 5 denier. The upper web (S2) made of filaments in the fineness range of 4 to 7 denier is bonded by passing through an embo roll on the lower web (S1) made of filaments of At this time, in order to enhance the performance and bonding properties of the lower web (S1) and the upper web (S2), the lower web (S1) has filaments having a fineness of 2 to 5 denier, each of 20 to 30 wt. In the upper web (S2), filaments having a fineness of 4 to 7 denier are uniformly arranged by 20 to 30 wt% for each fineness.
아래 [표 1]의 모식도에서와 같이, 하부 웹(S1)은 섬도 2 ~ 5데니어(denier) 범위의 필라멘트가 균일하게 혼재되어 흡수된 소변의 역류현상을 방지함과 동시에 균일한 웹 균제도를 확보할 수 있음과 동시에 웹의 적정 밀도를 확보하여 공정상의 적합성을 유지할 수 있다. 한편 상부 웹(S2)은 섬도 4 ~ 7데니어(denier) 범위의 필라멘트를 균일하게 혼재시킴으로써 고섬도 및 이형단면사 방사에 의한 흡한속건기능을 제대로 발휘할 수 있으며, 이로 인하여 탑 시트(Top Sheet)의 흡수성이 향상되어 쾌적성을 유지할 수 있게 되는 것이다.As shown in the schematic diagram of [Table 1] below, the lower web (S1) is uniformly mixed with filaments in the range of 2 to 5 denier in fineness to prevent the reverse flow of absorbed urine and at the same time to secure a uniform web uniformity At the same time as possible, it is possible to maintain suitability in the process by securing an appropriate density of the web. On the other hand, the upper web (S2) can properly exhibit the sweat perspiration and quick-drying function by spinning high-density and deformed cross-section yarns by uniformly mixing filaments in the range of 4 to 7 denier in fineness. Absorbency is improved and comfort can be maintained.
상기 탑 시트(Top Sheet)는 평량 9 ~ 13gsm(g/㎡) 및 두께 0.1 ~ 0.3㎜의 섬유간 자체 본딩에 형성되는 섬유 구조체로서, 상기 탑 시트(Top Sheet)를 구성하는 이형단면사는 이형단면의 종횡비가 평균 1 : 2 ~ 6 이내의 비율을 갖는 것이 바람직하며, 예를 들어 그 단면형태는 구금 노즐의 형태에 따라 편평형(A), 십자가형(B), 오뚜기형(C), 사각형(D), 삼각형(E) 등으로 구분할 수 있다.The top sheet is a fibrous structure formed by self-bonding between fibers having a basis weight of 9 to 13 gsm (g/m 2 ) and a thickness of 0.1 to 0.3 mm, and the deformed cross section constituting the top sheet has a deformed cross section. It is preferable to have an average aspect ratio of 1: 2 to 6, and for example, the cross-sectional shape is flat (A), cross (B), crow-shaped (C), rectangular (depending on the shape of the nozzle) D), triangle (E), etc.
아래 [표 2]에서는 상기 폴리프로필렌 장섬유 이형단면사의 최적 방사조건을 확립하기 위해 다양한 조건으로 방사를 진행한 SEM 이형단면 5종(X150)에 대한 방사 후 단면을 관찰하였다.In [Table 2] below, in order to establish the optimal spinning conditions for the polypropylene long fiber shaped yarn, the cross sections after spinning were observed for five SEM shaped shaped yarns (X150), which were spun under various conditions.
(A)flat
(A)
(B)cross
(B)
(C)Ottogi type
(C)
(D)Square
(D)
(E)triangle
(E)
다음으로, 본 발명에서는 기저귀 착용 시의 쾌적성을 향상시키기 위해 탑 시트(Top Sheet) 자체에 항균(땀냄새 억제 및 피부질환 예방을 위한 세균 번식 억제) 및 냉감 성분(수분과 반응하는 청량감)을 적용하고자 한다.Next, in the present invention, in order to improve comfort when wearing a diaper, antibacterial (inhibition of sweat odor and bacterial propagation to prevent skin diseases) and coolness component (refreshing feeling that reacts with moisture) are added to the top sheet itself to improve the comfort of wearing the diaper. want to apply
그러나 스펀본드 부직포는 공기기류에 의해 필라멘트를 하향 연신하여 웹으로 제조한 후 열을 통해 섬유상호간 결합시키는 과정을 거쳐 제조되는데, 원료물질이 노즐을 통하여 용융방사하기 때문에 물리적, 화학적 성질이 다른 기능성 물질과 고분자를 혼합하여 제조하는 것은 두 물질간의 물리적 특성 차이 때문에 방사의 최적조건을 결정하기가 매우 어렵다.However, spunbond nonwoven fabric is manufactured by drawing filaments downward by air stream to form a web, and then combining them with each other through heat. Since the raw material is melt-spun through a nozzle, it is a functional material with different physical and chemical properties. It is very difficult to determine the optimal conditions for spinning due to the difference in physical properties between the two materials.
따라서 방사하는 동안에 일어나는 용융물의 상호작용을 이해하고 방사조건에 따른 섬유의 특성변화에 대한 연구가 이루어져야 하므로, 토출량, 공기압력, 접착온도와 압력 등 제조 공정조건의 변화에 따라 물성과 구조가 달라지기 때문에 제조공정인자를 결정하는 것도 매우 중요하다. 이에 따라 웹의 열 결합 후 표면에 코팅처리하여 항균 및 냉감 성능을 부여하기 위해 기능성 물질의 최적 혼합비율, 입자 크기, 분산성 등을 고려하여 성능 발현을 위한 최적조건을 연구하였다.Therefore, it is necessary to understand the interaction of the melt that occurs during spinning and to study the change in the characteristics of the fiber according to the spinning conditions, so that the physical properties and structure change according to the change in manufacturing process conditions such as discharge amount, air pressure, adhesion temperature and pressure. Therefore, it is also very important to determine the manufacturing process parameters. Accordingly, in order to impart antibacterial and cooling performance by coating the surface after thermal bonding of the web, the optimal conditions for performance were studied in consideration of the optimal mixing ratio, particle size, and dispersibility of functional materials.
이러한 연구 결과로써 상기 탑 시트(Top Sheet)는 항균성을 부여하기 위해, ZnO(산화아연), Cu(구리), Ag(은), 흑운모(Biotite) 분말 중에서 선택된 1종 이상의 무기질 항균제; 및 은행잎 추출물, 알로에 추출물, 키토산, 계피, 코코넛 오일, 편백나무 오일 중에서 선택된 1종 이상의 천연 항균제를 0.1 ~ 0.5wt% 농도의 코팅액으로 코팅하며, 아울러 상기 탑 시트(Top Sheet)는 냉감성을 부여하기 위해, TiO2 분말; 및 목단피(모란뿌리의 껍질) 추출물, 자일리톨(Xylitol), 에리스리톨(Erythritol), 페퍼민트(Peppermint) 오일 중에서 선택된 1종 이상의 정유 추출물을 1 ~ 3wt% 농도의 코팅액으로 코팅한다.As a result of these studies, in order to impart antibacterial properties to the top sheet, at least one inorganic antimicrobial agent selected from ZnO (zinc oxide), Cu (copper), Ag (silver), and biotite powder; And at least one natural antibacterial agent selected from ginkgo leaf extract, aloe extract, chitosan, cinnamon, coconut oil, and cypress tree oil is coated with a coating solution at a concentration of 0.1 to 0.5 wt%, and the top sheet imparts coolness. To do so, TiO 2 powder; and at least one essential oil extract selected from the group consisting of moutan bark (peony root bark) extract, xylitol, erythritol, and peppermint oil is coated with a coating solution at a concentration of 1 to 3 wt%.
상기 무기질 항균제로써 ZnO(산화아연)은 마스크, 필터, 기저귀, 생리대, 의료용 패드 등 여러 용도의 부직포에 적용 가능한데, 항균 99.99%, 소취 기능 90% 이상이고, 인체에 닿는 제품이다 보니 유해성 검사(FITI) 및 피부자극성 테스트(KATRI)도 진행한 결과, 안전성과 피부 자극성 등의 문제가 없다는 결과를 확보하였다.As the inorganic antibacterial agent, ZnO (zinc oxide) can be applied to nonwoven fabrics for various purposes such as masks, filters, diapers, sanitary napkins, and medical pads. ) and skin irritation test (KATRI), it was confirmed that there is no problem such as safety and skin irritation.
또한, Cu(구리)를 이용한 나노입자 형성기술(Nano Particles on Powder, NPP)은 담체를 이용하여 기존의 친환경 물리적 박막형성기법으로 고객이 원하는 다양한 종류의 나노입자를 형성하는 것이 가능하며, Ag(은)은 미생물 주변의 수분과 함께 금속이온으로 이온화하여 박테리아의 표면과 금속이온의 결합, 금속이온의 박테리아 표면용해 촉진, 세포벽의 파괴 및 이로 인한 사멸에 효과적이며, 이들 물질의 상대적 살균도는 구리, 은, 아연의 순으로 입증되고 있다.In addition, nanoparticles on powder (NPP) using Cu (copper) is an existing eco-friendly physical thin film formation technique using a carrier, and it is possible to form various types of nanoparticles desired by customers, Ag ( silver) is ionized into metal ions together with moisture around microorganisms, and is effective in binding the surface of bacteria with metal ions, promoting dissolution of the surface of bacteria by metal ions, destroying cell walls and resulting death, and the relative sterilization of these substances is copper , silver, and zinc have been proven in that order.
그리고 흑운모(Biotite)는 라돈가스를 차단하고 대장균, 녹농균 등 각종 균류의 서식을 방지하며, 황토의 3배 이상의 원적외선 방사효능으로 혈액순환 촉진, 스트레스 해소, 신경통, 요통, 만성 피로회복 등의 작용을 하며, 각종 유해냄새를 신속히 흡수하여 공기 정화작용, 습도 조절, 단열성, 현대인의 체질을 알칼리성으로 개선하여 면역력을 개선한다고 알려져 있다.In addition, biotite blocks radon gas and prevents the growth of various fungi such as Escherichia coli and Pseudomonas aeruginosa, and promotes blood circulation, relieves stress, and relieves neuralgia, back pain, and chronic fatigue with far-infrared radiation efficacy that is three times greater than ocher. It is known to quickly absorb various harmful odors to purify air, regulate humidity, improve insulation, and improve immunity by improving the constitution of modern people to alkalinity.
그러나 상기와 같은 무기질 항균제는 항균 마스터배치 칩(Masterbatch chip) 첨가에 의한 항균력 부여의 경우에는 사절이 발생하고 입자의 크기 및 산포도가 낮아 터짐현상이 발생할 우려가 있으며, 투입되는 Masterbatch chip의 함량 대비(원가상승) 가격경쟁력 확보가 어려운 것으로 확인되었다.However, in the case of imparting antibacterial activity by adding an antimicrobial masterbatch chip, the inorganic antimicrobial agent as described above may cause breakage and breakage due to low particle size and dispersion, and compared to the content of the masterbatch chip introduced ( It was confirmed that securing price competitiveness was difficult.
또한, 본 발명에서는 상기 무기질 항균제 외에도 은행잎 추출물, 알로에 추출물, 키토산, 계피, 코코넛 오일, 편백나무 오일 중에서 선택된 1종 이상의 천연 항균제를 0.1 ~ 0.5wt% 범위의 농도로 코팅하는 것이 바람직하며, 그밖에 식약처 식품공전상에 등재된 10여종의 한방소재 추출물을 사용할 수 있음은 물론이다.In addition, in the present invention, in addition to the inorganic antibacterial agent, it is preferable to coat at least one natural antibacterial agent selected from ginkgo leaf extract, aloe extract, chitosan, cinnamon, coconut oil, and cypress tree oil at a concentration ranging from 0.1 to 0.5 wt%. Of course, it is possible to use extracts of about 10 kinds of oriental medicine materials registered in the Food Codex.
예를 들면, 코코넛 오일 속 중사슬지방산의 일종인 카프릴산은 살균력이 뛰어나 피부진균으로 인한 염증을 완화시킨다고 알려져 있다. 코코넛 오일을 주기적으로 피부에 바르면 여드름, 무좀 등 진균성 피부질환의 예방에도 도움을 주고 건강한 피부는 pH5 정도의 약한 산성을 띠는데, 코코넛 오일 속 지방산이 피부의 산성과 만나면 살갗에 보호막을 형성해 해로운 미생물로 인한 피부 감염을 막아주며, 자외선 차단에도 도움을 준다고 한다.For example, caprylic acid, a type of medium-chain fatty acid in coconut oil, is known to have excellent bactericidal power and relieve inflammation caused by skin fungi. Applying coconut oil regularly to the skin helps to prevent fungal skin diseases such as acne and athlete's foot, and healthy skin has a weak acidity of about pH 5. It is said to prevent skin infections caused by microorganisms and help block UV rays.
상기와 같은 탑 시트(Top Sheet)에 항균성을 부여하기 위한 기능과는 별개로, 상기 탑 시트(Top Sheet)에 냉감성을 부여하기 위해 TiO2 분말, 또는 목단피(모란뿌리의 껍질) 추출물, 자일리톨(Xylitol), 에리스리톨(Erythritol), 페퍼민트(Peppermint) 오일 중에서 선택된 1종 이상의 정유 추출물을 1 ~ 3wt% 범위의 농도로 코팅할 수 있는바, 상기 TiO2는 냉감 및 백도와 물성을 확보할 수 있으며, 목단피 추출물은 열기를 식히고 열로 인해 생긴 혈열을 식히는 약재로 사용되고 있다.Apart from the function for imparting antibacterial properties to the top sheet, TiO 2 powder, modan hull (peony root bark) extract, and xylitol to impart coolness to the top sheet. (Xylitol), erythritol (Erythritol), at least one essential oil extract selected from peppermint (Peppermint) oil can be coated at a concentration in the range of 1 to 3 wt%, the TiO 2 can secure cooling sensation and whiteness and physical properties, , Moutan bark extract is used as a medicine to cool heat and cool blood fever caused by heat.
그리고 자일리톨(xilytole)은 양파, 시금치, 딸기 등의 과실이나 야채 중에 많이 함유되어 있는 당 알코올(sugar alcohol)로서 인간 체내에서 만들어지는 대사중간물질인 자작나무나 옥수수 속대로부터 추출한 자일로스를 발효하여 얻어지는데, 이는 용해되면서 흡열반응을 일으켜 강한 청량감(시원한 느낌)을 부여하며, 에리스리톨(Erythritol)은 백포도 과실이나 기타 버섯, 와인, 청주, 간장, 된장 등의 발효식품에 포함되어 있는 천연의 당질로서 용해시 흡열작용이 높기 때문에 차갑고 상쾌한 청량감을 부여하며, 페퍼민트(Peppermint) 오일은 피부에 접촉시 시원하고 상쾌한 느낌을 준다고 알려져 있다.Xylitol is a sugar alcohol found in many fruits and vegetables, such as onions, spinach, and strawberries. Erythritol is a natural sugar contained in fermented foods such as white grape fruits or other mushrooms, wine, rice wine, soy sauce, and soybean paste. Since it has a high endothermic effect when dissolved, it gives a cool and refreshing feeling, and peppermint oil is known to give a cool and refreshing feeling when it comes in contact with the skin.
이상에서 살펴본 바와 같이, 본 발명은 수많은 실험을 거쳐 완성되었으나, 이하에서는 당해 기술분야에서 통상의 지식을 자진 사람이 용이하게 이해하고 실시할 수 있을 정도의 바람직한 실시예를 통하여 본 발명을 설명한다.As described above, the present invention has been completed through numerous experiments, but the present invention will be described below through preferred embodiments that can be easily understood and practiced by those skilled in the art.
[실시예][Example]
폴리프로필렌수지를 이형단면 방사기술을 적용한 편평형(A), 십자가형(B), 오뚜기형(C), 사각형(D), 삼각형(E) 등의 이형단면사 5종에 대한 평량을 각각 9 내지 13gsm으로 조절하여 형성된 폭 1000㎜의 탑 시트용 장섬유 부직포를 제조하였으며, 상기 장섬유 부직포를 이용하여 평량, 두께, 섬도를 달리하는 탑 시트의 종류는 아래 [표 3]과 같다.The basis weight of 5 types of irregular cross-section yarns, such as flat (A), cross-shaped (B), ttogi-shaped (C), square (D), and triangular (E), to which polypropylene resin is applied with special-shaped cross-section spinning technology, is 9 to 9, respectively. A long fiber nonwoven fabric for a top sheet having a width of 1000 mm formed by controlling 13 gsm was manufactured, and the types of top sheets having different basis weight, thickness, and fineness using the long fiber nonwoven fabric are shown in [Table 3].
- 평량 : KS K 0514 [천의 질량 측정방법 : 작은 시험편법-시험편의 질량(g)/시험편의 면적(㎠)× 10000]-Basic weight: KS K 0514 [Method for measuring fabric mass: small test piece method-mass of test piece (g) / area of test piece (cm2) × 10000]
- 두께 : KS K ISO 9073 [텍스타일-부직포 시험방법-제2부 두께 측정]- Thickness: KS K ISO 9073 [Textile-Non-woven fabric test method-Part 2 thickness measurement]
[실험예][Experimental example]
상기 실시예 1 내지 5에 의한 탑 시트의 최종 시제품을 국가공인시험기관에 의뢰하여 측정한 실험결과의 평균치를 성능지표와 대비하여 아래 [표 4]에 나타내었다.The average values of the experimental results measured by requesting the final prototypes of the top sheets according to Examples 1 to 5 to a national accredited testing institute are shown in [Table 4] below in comparison with the performance indicators.
○ 부직포의 형태학적 구조 분석(SEM을 통한 필라멘트 및 부직포의 단면, 표면 형태 분석)○ Morphological structure analysis of non-woven fabric (cross-section and surface morphology analysis of filament and non-woven fabric through SEM)
① SEM(Scanning Electron Microscope : 주사전자현미경)① SEM (Scanning Electron Microscope: Scanning Electron Microscope)
② EDS(Energy Disperse X-Ray Spectrometer : 에너지분산형분광분석기)② EDS (Energy Disperse X-Ray Spectrometer)
○ 부직포의 물리적 특성 분석(스펀본드 부직포의 두께, 평량, 인장강도, MMT 수분제어특성분석 등)○ Analysis of physical properties of nonwoven fabric (thickness, basis weight, tensile strength of spunbond nonwoven fabric, analysis of MMT moisture control characteristics, etc.)
① 두께 KS K ISO 9073① Thickness KS K ISO 9073
② 평량 KS K 0514② Basic weight KS K 0514
③ 인장강도 KS K 0756③ Tensile strength KS K 0756
④ MMT(moisture management tester) AATCC195④ MMT (moisture management tester) AATCC195
○ 부직포의 열적 특성 분석 및 유해물질 분석(온도 증가에 따른 섬유의 중량변화(TGA), DSC, 열안정성, FT-IR 등)○ Analysis of thermal characteristics and harmful substances of nonwoven fabric (weight change of fiber according to temperature increase (TGA), DSC, thermal stability, FT-IR, etc.)
① FT-IR (Fourier Transform Infrared Spectrometer : 적외선분광분석기)① FT-IR (Fourier Transform Infrared Spectrometer)
② TGA (열중량분석기)② TGA (Thermogravimetric Analyzer)
③ 시차주사열량계(DSC)③ Differential Scanning Calorimetry (DSC)
○ 부직포의 항균 및 냉감성능 효과 분석○ Analysis of antibacterial and cooling performance effects of non-woven fabrics
① 항균효과 분석 및 성능확보 : 항균도(KS K 0693:2016) : 정균감소율(%)① Antibacterial effect analysis and performance assurance: antibacterial degree (KS K 0693:2016): bacteriostatic reduction rate (%)
- 시험균종 : 균주 I - Staphylococcus aureus ATCC 6538- Test strain: strain I - Staphylococcus aureus ATCC 6538
균주 II - Klebsiella pneumoniae ATCC 4352 Strain II - Klebsiella pneumoniae ATCC 4352
② 냉감효과 분석 및 성능확보 : 처리 전 시료와 처리 후 시료를 손등 위에 올리고 온도 변화를 적외선 열화상 카메라로 측정하여 온도 차이를 기록② Analysis of cooling effect and securing performance: Place the sample before and after treatment on the back of the hand, measure the temperature change with an infrared thermal camera, and record the temperature difference
- 열화상카메라 FLUKE TiS20 thermal Imager- Thermal imaging camera FLUKE TiS20 thermal Imager
○ 유해물질방출시험(포름알데하이드, 염소화페놀류(PCP,TeCP) 등)○ Harmful substance emission test (formaldehyde, chlorinated phenols (PCP, TeCP), etc.)
① 자동수은분석기① Automatic mercury analyzer
② ICP(유도결합플라즈마분광광도계)② ICP (Inductively Coupled Plasma Spectrophotometer)
③ GC-MS③ GC-MS
④ pH (KS K ISO 3071:2005)④ pH (KS K ISO 3071:2005)
- 시험장비 : pH meter (Thermo Scientific)- Test equipment: pH meter (Thermo Scientific)
- 추출용액 : 염화칼륨 용액 (0.1 mol/L)- Extraction solution: Potassium chloride solution (0.1 mol/L)
- 추출액의 온도 : 24 ℃-Temperature of extract: 24 ℃
⑤ 포름알데히드 측정 (KS K ISO 14184-1:1998) : mg/kg⑤ Formaldehyde measurement (KS K ISO 14184-1:1998): mg/kg
- 시험장비 : UV/Vis Spectrometer(UVIKON)- Test equipment: UV/Vis Spectrometer (UVIKON)
- 측정파장 : 412nm- Measurement wavelength: 412nm
- 전처리방법 : 증류수 추출법- Pretreatment method: Distilled water extraction method
⑥ 형광증백제 (식품의약품안전처 고시 제2018-80호, 제5.3 용출법)⑥ Fluorescent whitening agent (Ministry of Food and Drug Safety Notice No. 2018-80, 5.3 elution method)
8~1025-30/
8 to 10
12.631.3/
12.6
(산업통상자원부 고시)Common safety standards for children's products
(Notice of the Ministry of Trade, Industry and Energy)
(산업통상자원부 고시)Common safety standards for children's products
(Notice of the Ministry of Trade, Industry and Energy)
75↓300↓
75↓
10미만less than 10
less than 10
(산업통상자원부 고시) Common safety standards for children's products
(Notice of the Ministry of Trade, Industry and Energy)
(산업통상자원부 고시) Common safety standards for children's products
(Notice of the Ministry of Trade, Industry and Energy)
상기 [표 4]에서와 같이, 본 발명에 따라 제조된 실시예 1 내지 실시예 5에 대한 시험결과를 검토해 볼 때, 모든 성능지표에서 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포로서의 최종 개발목표를 달성하는 것으로 확인되었으므로, 본 발명에 따른 부직포는 유아/성인용 기저귀의 부자재, 생리대, 애견 패드 등과 같은 위생용품은 물론 마스크나 방호복, 토시 등과 같은 각종 방역용품, 침대 커버, 선풍기 커버, 더스트 커버 등과 같은 각종 제품 커버, 일회용품 및 생활용품, 신발내피 보강재, 자동차 내장재 등과 같은 산업용품 등 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양한 용도와 형태로 더욱 확대 적용될 수 있다.As shown in [Table 4], when examining the test results for Examples 1 to 5 manufactured according to the present invention, in all performance indicators, the final spunbond nonwoven fabric for diapers to which polypropylene shaped cross-section spinning technology was applied was applied. Since it has been confirmed that the development goal has been achieved, the nonwoven fabric according to the present invention is used for hygiene products such as infant/adult diapers, sanitary napkins, and dog pads, as well as various quarantine products such as masks, protective clothing, and toilet paper, bed covers, fan covers, dust It can be further expanded and applied to various uses and forms within a range without departing from the technical spirit of the present invention, such as various product covers such as covers, disposable products and household items, shoe inner skin reinforcement materials, and industrial products such as automobile interior materials.
10 : 백시트 부직포(Back sheet non-woven fabrics)
20 : 루프(Loop)
30 : 후크(Hook)10: Back sheet non-woven fabrics
20 : Loop
30: Hook
Claims (5)
상기 탑 시트(Top Sheet)는 단면형태가 편평형(A), 십자가형(B), 오뚜기형(C), 사각형(D), 삼각형(E) 중에서 선택되는 1종 이상의 이형단면사로 구성되는 폴리프로필렌(PP) 스펀본드 장섬유 부직포로 이루어지되, 상기 폴리프로필렌(PP) 스펀본드 장섬유 부직포는 섬도 2 ~ 5데니어(denier) 범위의 필라멘트가 섬도별로 각각 20 ~ 30wt%씩 균일하게 배열되어 이루어지는 하부 웹(S1) 위에 섬도 4 ~ 7데니어(denier) 범위의 필라멘트가 섬도별로 각각 20 ~ 30wt%씩 균일하게 배열되어 이루어지는 상부 웹(S2)을 엠보롤(Embo roll)에 통과시켜 접합되며,
상기 탑 시트(Top Sheet)는 항균성을 부여하기 위해, ZnO(산화아연), Cu(구리), Ag(은), 흑운모(Biotite) 분말 중에서 선택된 1종 이상의 무기질 항균제; 및 은행잎 추출물, 알로에 추출물, 키토산, 계피, 코코넛 오일, 편백나무 오일 중에서 선택된 1종 이상의 천연 항균제를 0.1 ~ 0.5wt% 농도의 코팅액으로 코팅하거나, 또는
상기 탑 시트(Top Sheet)는 냉감성을 부여하기 위해, TiO2 분말; 및 목단피(모란뿌리의 껍질) 추출물, 자일리톨(Xylitol), 에리스리톨(Erythritol), 페퍼민트(Peppermint) 오일 중에서 선택된 1종 이상의 정유 추출물을 1 ~ 3wt% 농도의 코팅액으로 코팅하는 것을 특징으로 하는 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포.A spunbond nonwoven fabric for thermoplastic polyolefin-based diapers formed by overlapping a top sheet, an absorption and distribution layer sheet (ADL Sheet), a super absorbent polymer sheet (SAP Sheet), and a back sheet from the top in contact with the body in that order. in
The top sheet is polypropylene composed of at least one type of deformed cross-section yarn selected from flat (A), cross-shaped (B), crow-shaped (C), square (D), and triangular (E) cross-sections. It is made of (PP) spunbond long fiber nonwoven fabric, and the polypropylene (PP) spunbond long fiber nonwoven fabric has a lower portion in which filaments in the fineness range of 2 to 5 denier are uniformly arranged by 20 to 30 wt% for each fineness. On the web (S1), the upper web (S2), which is formed by uniformly arranging filaments in the range of 4 to 7 denier in fineness by 20 to 30 wt% for each fineness, is bonded by passing through an embo roll,
The top sheet includes at least one inorganic antibacterial agent selected from ZnO (zinc oxide), Cu (copper), Ag (silver), and biotite powder to impart antibacterial properties; And at least one natural antibacterial agent selected from ginkgo leaf extract, aloe extract, chitosan, cinnamon, coconut oil, and cypress oil is coated with a coating solution at a concentration of 0.1 to 0.5 wt%, or
The top sheet is TiO 2 powder; And at least one essential oil extract selected from modanpi (peony root bark) extract, xylitol, erythritol, and peppermint oil is coated with a coating solution at a concentration of 1 to 3 wt% Polypropylene release, characterized in that Spunbond nonwoven fabric for diapers with single-sided spinning technology applied.
상기 탑 시트(Top Sheet)는 평량 9 ~ 13gsm(g/㎡) 및 두께 0.1 ~ 0.3㎜의 섬유간 자체 본딩에 형성되는 섬유 구조체인 것을 특징으로 하는 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포.According to claim 1,
The top sheet is a fiber structure formed by self-bonding between fibers having a basis weight of 9 to 13 gsm (g / ㎡) and a thickness of 0.1 to 0.3 mm. Non-woven.
상기 탑 시트(Top Sheet)를 구성하는 이형단면사는 이형단면의 종횡비가 평균 1 : 2 ~ 6 이내의 비율을 갖는 것을 특징으로 하는 폴리프로필렌 이형단면 방사기술을 적용한 기저귀용 스펀본드 부직포.According to claim 1,
Spunbond nonwoven fabric for diapers applied with polypropylene irregular cross-section spinning technology, characterized in that the irregular cross-section yarn constituting the top sheet has an average aspect ratio of 1: 2 to 6.
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| US20080234645A1 (en) | 2007-03-23 | 2008-09-25 | Dodge Richard N | Absorbent articles comprising high permeability superabsorbent polymer compositions |
| WO2009012284A1 (en) | 2007-07-16 | 2009-01-22 | Groupo P.I. Mabe, S.A. De C.V. | Environmentally sensitive diapers manufactured with renewable resources |
| JP2018525170A (en) * | 2015-08-28 | 2018-09-06 | フィテサ ノンウォーヴン、インコーポレイテッドＦｉｔｅｓａ Ｎｏｎｗｏｖｅｎ， Ｉｎｃ． | Absorbent articles with high content of bio-based materials |
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| KR100436987B1 (en) * | 2001-08-23 | 2004-06-23 | 주식회사 라크인더스트리 | The light weight acquisition distribution a nonwoven fabric and manufacturing process of a diaper and sanitary napkin |
| US6740792B2 (en) * | 2001-12-18 | 2004-05-25 | Kimberly-Clark Worldwide, Inc. | Cover material with improved fluid handling properties |
| KR20180051069A (en) | 2016-11-08 | 2018-05-16 | 주식회사 강림물산 | Process Of Producing Excellent Light Resistant Sunshield Fabrics Using Modified Cross Sectional Dope Dyed Polypropylene |
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|---|---|---|---|---|
| US20080234645A1 (en) | 2007-03-23 | 2008-09-25 | Dodge Richard N | Absorbent articles comprising high permeability superabsorbent polymer compositions |
| WO2009012284A1 (en) | 2007-07-16 | 2009-01-22 | Groupo P.I. Mabe, S.A. De C.V. | Environmentally sensitive diapers manufactured with renewable resources |
| JP2018525170A (en) * | 2015-08-28 | 2018-09-06 | フィテサ ノンウォーヴン、インコーポレイテッドＦｉｔｅｓａ Ｎｏｎｗｏｖｅｎ， Ｉｎｃ． | Absorbent articles with high content of bio-based materials |
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