TW202138639A - Spun-bonded non-woven cloth - Google Patents

Spun-bonded non-woven cloth Download PDF

Info

Publication number
TW202138639A
TW202138639A TW110110755A TW110110755A TW202138639A TW 202138639 A TW202138639 A TW 202138639A TW 110110755 A TW110110755 A TW 110110755A TW 110110755 A TW110110755 A TW 110110755A TW 202138639 A TW202138639 A TW 202138639A
Authority
TW
Taiwan
Prior art keywords
nonwoven fabric
spunbonded nonwoven
fiber
reference direction
fibers
Prior art date
Application number
TW110110755A
Other languages
Chinese (zh)
Inventor
中嶋格
阪上好
島田大樹
羽根亮一
Original Assignee
日商東麗股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日商東麗股份有限公司 filed Critical 日商東麗股份有限公司
Publication of TW202138639A publication Critical patent/TW202138639A/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2509/00—Medical; Hygiene
    • D10B2509/02—Bandages, dressings or absorbent pads
    • D10B2509/026—Absorbent pads; Tampons; Laundry; Towels

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Dermatology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The purpose of the present invention is to provide a spun-bonded non-woven cloth having excellent printing properties, superior glossiness, and flexibility. To achieve this purpose, the present invention has the following configuration. Specifically, a spun-bonded non-woven cloth comprising a polyolefin resin, the average fiber orientation being 0-30 DEG, the proportion of fibers having a fiber orientation of 0-30 DEG being 50-80%, and the tensile strength in a reference direction being 3-6 times the tensile strength in an orthogonal direction.

Description

紡黏不織布Spunbond non-woven fabric

本發明是有關於一種紡黏不織布。The present invention relates to a spunbonded non-woven fabric.

通常，於紙尿布或生理用衛生巾等衛生材料用的不織布中，就輕盈、低成本、柔軟度等理由而言，多使用包含聚烯烴的不織布。Generally, non-woven fabrics containing polyolefins are often used in non-woven fabrics for sanitary materials such as paper diapers and sanitary napkins for reasons such as lightness, low cost, and softness.

尤其是，紙尿布的背面片材（back sheet）由於接觸手的機會多，再加上使用範圍大，進而對尿布的外觀造成的影響大，因此，除了肌膚觸感或柔軟性以外，對設計性的要求亦增加。關於紙尿布的外觀，作為受嬰兒歡迎的外觀，期望於表面有字符（character）等，對不織布表面的印刷性這一功能是重要的功能之一。另外，於設計性方面，尤其受歡迎的是具有絲綢（silk）般的外觀、光澤度高者。In particular, the back sheet of a paper diaper has many opportunities to touch hands and a large range of use, which has a large impact on the appearance of the diaper. Therefore, in addition to the touch and softness of the skin, it is important for the design Sexual requirements have also increased. Regarding the appearance of a paper diaper, as an appearance popular with babies, it is desirable to have characters on the surface, and the function of printing on the surface of the non-woven fabric is one of the important functions. In addition, in terms of design, those with a silk-like appearance and high gloss are particularly popular.

作為提高不織布的肌膚觸感或柔軟性的手段，自先前起便已知對構成不織布的纖維的纖維徑進行控制的方法是有效的。例如，提出有藉由將纖維的纖度與吸附力設為特定的範圍來提高纖維自身的彎曲柔軟度的紡黏不織布（參照專利文獻1）。 [現有技術文獻] [專利文獻]As a means for improving the skin feel or softness of the nonwoven fabric, it has been known from the past that the method of controlling the fiber diameter of the fibers constituting the nonwoven fabric is effective. For example, there has been proposed a spunbonded nonwoven fabric in which the bending flexibility of the fiber itself is improved by setting the fineness and the adsorption force of the fiber in a specific range (see Patent Document 1). [Prior Art Literature] [Patent Literature]

[專利文獻1]日本專利特開2013-159884號公報[Patent Document 1] Japanese Patent Laid-Open No. 2013-159884

[發明所欲解決之課題] 但是，於專利文獻1中所揭示的方法中，不織布表面的凹凸大，產生印刷不均，難以獲得良好的外觀。[The problem to be solved by the invention] However, in the method disclosed in Patent Document 1, unevenness on the surface of the nonwoven fabric is large, printing unevenness occurs, and it is difficult to obtain a good appearance.

另外，為了使表面平滑，考慮有利用熱壓光機等進行抵接的方法，但於本方法中，由於不織布表面膜化，因此手感硬。In addition, in order to make the surface smooth, a method of contacting with a hot calender or the like is considered, but in this method, since the surface of the non-woven fabric is made into a film, the texture is hard.

如此，要求減少了表面凹凸的不織布，但現狀是並未獲得兼顧有可耐受實用的印刷性與觸感的不織布。In this way, non-woven fabrics with reduced surface irregularities are required, but the current situation is that non-woven fabrics that have both printability and tactility that can withstand practical use have not been obtained.

因此，本發明的目的是鑒於所述課題，提供一種印刷性良好、光澤優異、且柔軟的紡黏不織布。Therefore, the object of the present invention is to provide a spunbonded nonwoven fabric with good printability, excellent gloss, and softness in view of the above-mentioned problems.

[解決課題之手段] 本發明的紡黏不織布為包含聚烯烴系樹脂的紡黏不織布，且平均纖維配向度為0度～30度，纖維配向度為0度～30度的纖維比例為50%～80%，並且基準方向的抗拉強度為與基準方向正交的方向的抗拉強度的3倍～6倍。[Means to solve the problem] The spunbonded nonwoven fabric of the present invention is a spunbonded nonwoven fabric containing polyolefin resin, and the average fiber orientation degree is 0 to 30 degrees, and the proportion of fibers with a fiber orientation degree of 0 to 30 degrees is 50% to 80%. The tensile strength in the direction is 3 to 6 times the tensile strength in the direction orthogonal to the reference direction.

根據本發明的紡黏不織布的較佳態樣，構成所述紡黏不織布的纖維的平均單纖維徑為6.5 μm～11.9 μm。According to a preferred aspect of the spunbonded nonwoven fabric of the present invention, the average single fiber diameter of the fibers constituting the spunbonded nonwoven fabric is 6.5 μm to 11.9 μm.

根據本發明的紡黏不織布的較佳態樣，至少針對單面的基準方向和與基準方向直行的方向進行測定的藉由川端評估系統（Kawabata Evaluation System，KES）法而得的表面粗糙度SMD的比為0.30～0.85。According to a preferred aspect of the spunbonded nonwoven fabric of the present invention, the surface roughness SMD obtained by the Kawabata Evaluation System (KES) method is measured at least for the reference direction of one side and the direction straight to the reference direction The ratio is 0.30～0.85.

根據本發明的紡黏不織布的較佳態樣，所述聚烯烴系樹脂包含碳數23～50的脂肪酸醯胺化合物。According to a preferred aspect of the spunbonded nonwoven fabric of the present invention, the polyolefin resin contains a fatty acid amide compound having a carbon number of 23-50.

根據本發明的紡黏不織布的較佳態樣，所述聚烯烴系樹脂中的所述脂肪酸醯胺化合物的含量為0.01質量%～5.0質量%。According to a preferred aspect of the spunbonded nonwoven fabric of the present invention, the content of the fatty acid amide compound in the polyolefin resin is 0.01% by mass to 5.0% by mass.

根據本發明的紡黏不織布的較佳態樣，所述脂肪酸醯胺包含伸乙基雙硬脂酸醯胺。According to a preferred aspect of the spunbonded nonwoven fabric of the present invention, the fatty acid amide contains ethylene distearate.

根據本發明的紡黏不織布的較佳態樣，藉由懸臂法（cantilever method）測定的基準方向的硬挺度為10 mm～80 mm。According to a preferred aspect of the spunbonded nonwoven fabric of the present invention, the stiffness in the reference direction measured by the cantilever method is 10 mm to 80 mm.

根據本發明的紡黏不織布的較佳態樣，所述紡黏不織布進而滿足以下的式（1）。According to a preferred aspect of the spunbonded nonwoven fabric of the present invention, the spunbonded nonwoven fabric further satisfies the following formula (1).

GL/100≧95    …（1） 此處，G為光澤度的最大值，L為平均亮度。GL/100≧95 …(1) Here, G is the maximum value of gloss, and L is the average brightness.

[發明的效果] 根據本發明，可獲得印刷性良好、光澤優異、且柔軟的紡黏不織布。[Effects of the invention] According to the present invention, a spunbonded nonwoven fabric with good printability, excellent gloss, and softness can be obtained.

本發明的紡黏不織布為包含聚烯烴系樹脂的紡黏不織布，且平均纖維配向度為0度～30度，纖維配向度為0度～30度的纖維為50%～80%，並且基準方向的抗拉強度為與基準方向正交的方向的抗拉強度的3倍～6倍。The spunbonded nonwoven fabric of the present invention is a spunbonded nonwoven fabric containing polyolefin resin, and the average fiber orientation degree is 0 to 30 degrees, and the fiber orientation degree of 0 to 30 degrees is 50% to 80%, and the reference direction The tensile strength of is 3 to 6 times the tensile strength of the direction orthogonal to the reference direction.

藉由如此進行，可製成印刷性良好、光澤優異、且柔軟的紡黏不織布。 以下，對該些的詳細情況進行說明。By doing so, a spunbonded non-woven fabric with good printability, excellent gloss, and softness can be made. Hereinafter, these details will be described.

[聚烯烴系樹脂] 作為本發明中所使用的聚烯烴系樹脂，例如可列舉：聚丙烯系樹脂、聚乙烯系樹脂等。[Polyolefin resin] As the polyolefin resin used in the present invention, for example, polypropylene resin, polyethylene resin, and the like can be cited.

作為聚丙烯系樹脂，可列舉丙烯的均聚物或丙烯與各種α-烯烴的共聚物等。Examples of polypropylene resins include homopolymers of propylene, copolymers of propylene and various α-olefins, and the like.

作為聚乙烯系樹脂，可列舉乙烯的均聚物或乙烯與各種α-烯烴的共聚物等。Examples of polyethylene-based resins include homopolymers of ethylene or copolymers of ethylene and various α-olefins.

該些中，就紡絲性或強度的特性而言，可尤其較佳地使用聚丙烯系樹脂。Among these, in terms of spinnability and strength characteristics, polypropylene-based resins can be particularly preferably used.

本發明中所使用的聚烯烴系樹脂可為兩種以上的混合物，另外，亦可為含有其他烯烴系樹脂或熱塑性彈性體等的樹脂組成物。The polyolefin-based resin used in the present invention may be a mixture of two or more types, and may also be a resin composition containing other olefin-based resins or thermoplastic elastomers.

本發明中所使用的聚烯烴系樹脂可為將多種聚烯烴系樹脂組合而成的複合型纖維。作為複合型纖維的複合形態，例如可列舉同心芯鞘型、偏心芯鞘型及海島型等複合形態。其中，就紡絲性優異、可藉由熱接著使纖維彼此均勻地接著的方面而言，較佳態樣是設為同心芯鞘型的複合形態。The polyolefin resin used in the present invention may be a composite fiber obtained by combining a plurality of polyolefin resins. Examples of the composite form of the composite fiber include a concentric core sheath type, an eccentric core sheath type, and a sea-island type. Among them, in terms of excellent spinnability and the ability to uniformly bond fibers to each other by thermal bonding, a preferred aspect is a concentric core-sheath composite form.

於不損及本發明的效果的範圍內，可視需要對本發明中所使用的聚烯烴系樹脂添加抗氧化劑、耐候穩定劑、耐光穩定劑、抗靜電劑、紡霧劑、防黏連劑、潤滑劑、成核劑、顏料等添加物、其他聚合物等。Within the range that does not impair the effects of the present invention, antioxidants, weather-resistant stabilizers, light-resistant stabilizers, antistatic agents, spun fogging agents, anti-blocking agents, and lubricating agents may be added to the polyolefin resin used in the present invention as needed. Additives such as agents, nucleating agents, pigments, and other polymers.

本發明中所使用的聚烯烴系樹脂的熔點較佳為80℃～200℃，更佳為100℃～180℃，進而佳為120℃～180℃。藉由將熔點設為較佳為80℃以上、更佳為100℃以上、進而佳為120℃以上，容易獲得高的耐熱性。另外，藉由將熔點設為較佳為200℃以下、更佳為180℃以下，容易使自模口噴出的絲條冷卻，抑制纖維彼此的熔接而容易進行穩定的紡絲。The melting point of the polyolefin resin used in the present invention is preferably 80°C to 200°C, more preferably 100°C to 180°C, and still more preferably 120°C to 180°C. By setting the melting point to preferably 80°C or higher, more preferably 100°C or higher, and still more preferably 120°C or higher, high heat resistance can be easily obtained. In addition, by setting the melting point to preferably 200°C or lower, more preferably 180°C or lower, it is easy to cool the threads ejected from the die, and the fusion of fibers is suppressed, and stable spinning can be easily performed.

本發明的紡黏不織布的熔體流動速率（melt flow rate）（以下，有時記載為MFR）較佳為155 g/10分鐘～850 g/10分鐘。藉由將MFR設為155 g/10分鐘～850 g/10分鐘、較佳為155 g/10分鐘～600 g/10分鐘、更佳為155 g/10分鐘～400 g/10分鐘，即便為了提高生產性而以高的紡絲速度進行延伸，亦由於黏度低而可容易地追隨變形，容易進行穩定的紡絲。另外，藉由以高的紡絲速度進行延伸，而推進纖維的配向結晶化，容易獲得具有高的機械強度的纖維。The melt flow rate (hereinafter, sometimes referred to as MFR) of the spunbonded nonwoven fabric of the present invention is preferably 155 g/10 minutes to 850 g/10 minutes. By setting the MFR to 155 g/10 minutes to 850 g/10 minutes, preferably 155 g/10 minutes to 600 g/10 minutes, more preferably 155 g/10 minutes to 400 g/10 minutes, even for It improves productivity and stretches at a high spinning speed, and because of its low viscosity, it can easily follow the deformation, and it is easy to perform stable spinning. In addition, by stretching at a high spinning speed to advance the orientation crystallization of the fiber, it is easy to obtain a fiber with high mechanical strength.

紡黏不織布的熔體流動速率（MFR）是藉由後述的方法來測定。The melt flow rate (MFR) of the spunbonded nonwoven fabric is measured by the method described later.

藉由與紡黏不織布的MFR的情況相同的理由，作為本發明的紡黏不織布的原料的聚烯烴系樹脂的MFR較佳為155 g/10分鐘～850 g/10分鐘，更佳為155 g/10分鐘～600 g/10分鐘，進而佳為155 g/10分鐘～400 g/10分鐘。For the same reason as in the case of the MFR of the spunbonded nonwoven fabric, the MFR of the polyolefin resin as the raw material of the spunbonded nonwoven fabric of the present invention is preferably 155 g/10 min to 850 g/10 min, more preferably 155 g /10 minutes to 600 g/10 minutes, more preferably 155 g/10 minutes to 400 g/10 minutes.

於本發明的紡黏不織布中，亦可以任意比例摻合（blend）MFR不同的兩種以上的樹脂，調整聚烯烴系樹脂的MFR。於該情況下，對聚烯烴系樹脂摻合的樹脂的MFR較佳為10 g/10分鐘～1000 g/10分鐘，更佳為20 g/10分鐘～800 g/10分鐘，進而佳為30 g/10分鐘～600 g/10分鐘。藉由如此進行，可防止摻合後的聚烯烴系樹脂局部產生黏度不均而纖度不均勻化、或者紡絲性惡化。In the spunbonded nonwoven fabric of the present invention, two or more resins with different MFRs can also be blended in any ratio to adjust the MFR of the polyolefin resin. In this case, the MFR of the resin blended with the polyolefin resin is preferably 10 g/10 min to 1000 g/10 min, more preferably 20 g/10 min to 800 g/10 min, and still more preferably 30 g/10 min. g/10 minutes to 600 g/10 minutes. By doing so, it is possible to prevent the blended polyolefin-based resin from locally generating unevenness in viscosity, resulting in uneven fineness, or deterioration in spinnability.

另外，於紡出後述的纖維時，為了防止局部性黏度不均的產生，使纖維的纖度均勻化，進而如後述般使纖維徑變細，亦考慮有對於使用的樹脂，使該樹脂分解來調整MFR。但是，較佳為不添加例如過氧化物、尤其是二烷基過氧化物等游離自由基劑等。於使用該方法的情況下，除了局部產生黏度不均而纖度不均勻化、難以使纖維徑充分變細以外，亦存在因黏度不均或由分解氣體產生的氣泡而紡絲性惡化的情況。In addition, when spinning the fibers described later, in order to prevent the occurrence of localized viscosity unevenness, make the fiber fineness uniform, and further reduce the fiber diameter as described later, it is also considered that the resin used is decomposed to decompose the resin. Adjust MFR. However, it is preferable not to add a free radical agent such as a peroxide, especially a dialkyl peroxide, or the like. In the case of using this method, in addition to localized unevenness in viscosity and uneven fineness, and difficulty in sufficiently narrowing the fiber diameter, spinnability may be deteriorated due to uneven viscosity or bubbles generated by decomposition gas.

於本發明的紡黏不織布中，較佳為聚烯烴系樹脂包含碳數23～50的脂肪酸醯胺化合物。藉由包含碳數23～50的脂肪酸醯胺化合物，纖維的配向性或不織布的柔軟性容易提高。In the spunbonded nonwoven fabric of the present invention, it is preferable that the polyolefin resin contains a fatty acid amide compound having 23 to 50 carbon atoms. By including the fatty acid amide compound having 23 to 50 carbon atoms, the alignment properties of the fibers and the flexibility of the nonwoven fabric are easily improved.

藉由將脂肪酸醯胺化合物的碳數設為23以上、較佳為設為30以上，可抑制脂肪酸醯胺化合物過度地露出至纖維表面，使紡絲性與加工穩定性優異，並保持高的生產性。另一方面，藉由將脂肪酸醯胺化合物的碳數設為50以下、較佳為設為42以下，脂肪酸醯胺化合物容易移動到纖維表面，纖維配向容易變得一樣，可進一步提高紡黏不織布的柔軟性。By setting the carbon number of the fatty acid amide compound to 23 or more, preferably 30 or more, it is possible to prevent the fatty acid amide compound from being excessively exposed to the fiber surface, so that the spinnability and processing stability are excellent, and the high performance is maintained. Productivity. On the other hand, by setting the carbon number of the fatty acid amide compound to 50 or less, preferably 42 or less, the fatty acid amide compound is easily moved to the fiber surface and the fiber orientation is easily uniform, which can further improve the spunbonded nonwoven fabric The softness.

作為碳數23～50的脂肪酸醯胺化合物，可列舉：飽和脂肪酸單醯胺化合物、飽和脂肪酸二醯胺化合物、不飽和脂肪酸單醯胺化合物、及不飽和脂肪酸二醯胺化合物等。Examples of fatty acid amide compounds having 23 to 50 carbon atoms include saturated fatty acid monoamide compounds, saturated fatty acid diamide compounds, unsaturated fatty acid monoamide compounds, unsaturated fatty acid diamide compounds, and the like.

具體而言，作為碳數23～50的脂肪酸醯胺化合物，可列舉：二十四酸醯胺、二十六酸醯胺、二十八酸醯胺、神經酸醯胺、二十四碳五烯酸醯胺、鯡酸醯胺、伸乙基雙月桂酸醯胺、亞甲基雙月桂酸醯胺、伸乙基雙硬脂酸醯胺、伸乙基雙羥基硬脂酸醯胺、伸乙基雙二十二酸醯胺、六亞甲基雙硬脂酸醯胺、六亞甲基雙二十二酸醯胺、六亞甲基羥基硬脂酸醯胺、二硬脂基己二酸醯胺、二硬脂基癸二酸醯胺、伸乙基雙油酸醯胺、伸乙基雙芥子酸醯胺、及六亞甲基雙油酸醯胺等，該些亦可組合使用多種。Specifically, examples of fatty acid amide compounds having 23 to 50 carbon atoms include: tetracosylamide, hexadecanoic acid amide, octadecanoic acid amide, ceramide, and tetracosamide Ethylene acid amide, herring acid amide, ethylene bislaurate amide, methylene bislaurate amide, ethylene bisstearate amide, ethylene bishydroxystearate amide, ethylene bis Ethyl bis behenic acid amide, hexamethylene bis stearic acid amide, hexamethylene bis behenic acid amide, hexamethylene hydroxy stearic acid amide, distearyl hexamethylene di Amide, distearyl sebacate amide, ethylene bis-oleate amide, ethylene bis-erucic acid amide, and hexamethylene bis-oleic acid amide, etc., these can also be used in combination Many kinds.

該些脂肪酸醯胺化合物中，可尤其較佳地使用作為飽和脂肪酸二醯胺化合物的伸乙基雙硬脂酸醯胺。伸乙基雙硬脂酸醯胺由於熱穩定性優異而可適宜地用於熔融紡絲。因此，藉由包含含有伸乙基雙硬脂酸醯胺的聚烯烴系樹脂的纖維，而容易獲得於保持高的生產性的同時、滑性或柔軟性更優異的紡黏不織布。Among these fatty acid amide compounds, ethylenebisstearic acid amide which is a saturated fatty acid diamide compound can be particularly preferably used. Ethylene distearate can be suitably used for melt spinning due to its excellent thermal stability. Therefore, by containing the fiber of the polyolefin resin containing ethylenebisstearate, it is easy to obtain a spunbonded nonwoven fabric that is more excellent in slippery or softness while maintaining high productivity.

於本發明的紡黏不織布中，較佳為聚烯烴系樹脂中的脂肪酸醯胺化合物的含量為0.01質量%～5.0質量%。藉由將脂肪酸醯胺化合物的含量較佳為設為0.01質量%～5.0質量%、更佳為設為0.1質量%～3.0質量%、進而佳為設為0.1質量%～1.5質量%，可於維持紡絲性的同時賦予適度的滑性與更高的柔軟性。In the spunbonded nonwoven fabric of the present invention, the content of the fatty acid amide compound in the polyolefin resin is preferably 0.01% by mass to 5.0% by mass. The content of the fatty acid amide compound is preferably 0.01% by mass to 5.0% by mass, more preferably 0.1% by mass to 3.0% by mass, and still more preferably 0.1% by mass to 1.5% by mass. While maintaining spinnability, it imparts moderate slip and higher flexibility.

此處所述的含量是指構成本發明的紡黏不織布的聚烯烴系樹脂整體中含有的脂肪酸醯胺化合物的質量百分率。例如，即便於僅於構成芯鞘型複合纖維的鞘部成分中含有脂肪酸醯胺化合物的情況下，亦算出相對於芯鞘成分整體量的含有比例。The content described here refers to the mass percentage of the fatty acid amide compound contained in the entire polyolefin resin constituting the spunbonded nonwoven fabric of the present invention. For example, even when the fatty acid amide compound is contained only in the sheath component constituting the core-sheath composite fiber, the content ratio with respect to the entire amount of the core-sheath component is calculated.

作為測定聚烯烴系樹脂中的脂肪酸醯胺化合物的含量的方法，例如可列舉如下方法：自聚烯烴系樹脂的纖維中溶媒萃取添加劑，使用液相層析質譜（liquid chromatography/mass spectrometry，LC/MS）等進行定量分析。此時，萃取溶媒是根據脂肪酸醯胺化合物的種類來適宜地選擇，例如，於伸乙基雙硬脂酸醯胺的情況下，可列舉使用氯仿-甲醇混合液等的方法作為一例。As a method for measuring the content of the fatty acid amide compound in the polyolefin-based resin, for example, the following method can be cited: solvent extraction of additives from fibers of the polyolefin-based resin, liquid chromatography/mass spectrometry (liquid chromatography/mass spectrometry, LC/ MS) and so on for quantitative analysis. In this case, the extraction solvent is appropriately selected according to the type of fatty acid amide compound. For example, in the case of ethylene distearate, a method using a chloroform-methanol mixed liquid or the like can be cited as an example.

[包含聚烯烴系樹脂的纖維] 於本發明的紡黏不織布中，構成紡黏不織布的纖維的平均單纖維徑較佳為6.5 μm～11.9 μm。藉由將平均單纖維徑設為6.5 μm～11.9 μm、較佳為7.5 μm～11.9 μm、更佳為8.4 μm～11.9 μm，可獲得更柔軟且均勻性高的不織布。[Fibers containing polyolefin resins] In the spunbonded nonwoven fabric of the present invention, the average single fiber diameter of the fibers constituting the spunbonded nonwoven fabric is preferably 6.5 μm to 11.9 μm. By setting the average single fiber diameter to 6.5 μm to 11.9 μm, preferably 7.5 μm to 11.9 μm, more preferably 8.4 μm to 11.9 μm, a softer and highly uniform nonwoven fabric can be obtained.

再者，於本發明中，構成所述紡黏不織布的纖維的平均單纖維徑（μm）是藉由後述的方法來測定。In addition, in the present invention, the average single fiber diameter (μm) of the fibers constituting the spunbonded nonwoven fabric is measured by the method described later.

構成本發明的紡黏不織布的纖維較佳為單纖維徑的變動係數（coefficient of variation）（CV值）為7%以下。此處，單纖維徑的CV值是藉由以下式子來算出。 ·單纖維徑的CV值=（單纖維徑的標準偏差）/（平均單纖維徑）×100 藉由將單纖維徑的CV值較佳為設為7%以下、更佳為設為6%以下、進而佳為設為5%以下，而防止表面產生粗糙感，容易獲得均勻性高的紡黏不織布。對於單纖維徑的CV值而言，紡絲模口的背壓或絲冷卻條件、延伸條件的均勻性發揮支配性作用，例如，可藉由適當調整該些來進行控制。The fibers constituting the spunbonded nonwoven fabric of the present invention preferably have a coefficient of variation (CV value) of 7% or less of the single fiber diameter. Here, the CV value of the single fiber diameter is calculated by the following formula. ·CV value of single fiber diameter=(standard deviation of single fiber diameter)/(average single fiber diameter)×100 By setting the CV value of the single fiber diameter to preferably 7% or less, more preferably 6% or less, and still more preferably 5% or less, the surface roughness is prevented, and it is easy to obtain a spinning with high uniformity. Sticky non-woven fabric. Regarding the CV value of the single fiber diameter, the back pressure of the spinning die, the uniformity of the yarn cooling conditions, and the elongation conditions play a dominant role. For example, it can be controlled by appropriately adjusting these.

[紡黏不織布] 本發明的紡黏不織布重要的是平均纖維配向度為0度～30度。藉由將平均纖維配向度設為0度～30度、較佳為設為5度～30度、更佳為設為8度～30度，而纖維配向變得一樣，不織布表面的均勻性或平滑性提高，印刷、塗敷性變良好。[Spunbond non-woven fabric] It is important for the spunbonded nonwoven fabric of the present invention that the average fiber orientation degree is 0 to 30 degrees. By setting the average fiber orientation degree to 0 degrees to 30 degrees, preferably 5 degrees to 30 degrees, more preferably 8 degrees to 30 degrees, the fiber orientation becomes the same, and the uniformity of the surface of the non-woven fabric or The smoothness is improved, and the printing and coating properties become better.

另外，本發明的紡黏不織布重要的是纖維配向度為0度～30度的纖維比例為50%～80%。纖維配向度為0度～30度的纖維比例較佳為60%～80%。藉由將纖維配向度為0度～30度的纖維比例設為50%～80%、較佳為60%～80%，而纖維一樣地排列，質地變均勻，可對紡黏不織布賦予良好的印刷性。In addition, it is important for the spunbonded nonwoven fabric of the present invention that the proportion of fibers with a degree of fiber orientation of 0-30 degrees is 50% to 80%. The proportion of fibers having a degree of fiber orientation of 0-30 degrees is preferably 60%-80%. By setting the proportion of fibers with a degree of fiber orientation of 0 to 30 degrees to 50% to 80%, preferably 60% to 80%, the fibers are arranged in the same manner and the texture becomes uniform, which can impart a good quality to the spunbonded nonwoven fabric. Printability.

再者，所謂本發明中的纖維配向度，是指不織布的基準方向與任意選擇的1根纖維所形成的銳角的角度。另外，所謂本發明中的平均纖維配向度，是指針對規定根數的纖維進行測定的纖維配向度的平均值。基準方向的決定方法、纖維配向度、及平均纖維配向度的算出方法為如後所述。In addition, the degree of fiber orientation in the present invention refers to an acute angle formed by the reference direction of the non-woven fabric and an arbitrarily selected fiber. In addition, the average fiber orientation in the present invention refers to the average value of the fiber orientation measured for a predetermined number of fibers. The method of determining the reference direction, the degree of fiber orientation, and the method of calculating the average fiber orientation are as described later.

平均纖維配向度及纖維配向度為0度～30度的纖維比例例如可藉由調整開纖方法或紡絲速度、捕集條件等、或者對聚烯烴樹脂添加潤滑劑來控制。The average fiber orientation degree and the fiber ratio of the fiber orientation degree of 0 to 30 degrees can be controlled by, for example, adjusting the opening method, spinning speed, collection conditions, etc., or adding a lubricant to the polyolefin resin.

本發明的紡黏不織布較佳為至少針對單面的基準方向和與基準方向直行的方向進行測定的藉由KES法而得的表面粗糙度SMD的比為0.30～0.85。藉由將針對基準方向和與基準方向直行的方向進行測定的藉由KES法而得的表面粗糙度SMD的比設為0.30以上、較佳為設為0.35以上、更佳為設為0.40以上，可防止橫向拉伸強度過度降低。另一方面，藉由將針對基準方向和與基準方向直行的方向進行測定的藉由KES法而得的表面粗糙度SMD的比設為0.85以下，可顯現出高的光澤度。針對基準方向和與基準方向直行的方向進行測定的藉由KES法而得的表面粗糙度SMD的比例如可藉由適當地調整纖維配向度等來控制。The spunbonded nonwoven fabric of the present invention preferably has a surface roughness SMD ratio of 0.30 to 0.85 by the KES method, which is measured at least for the reference direction of one side and the direction straight to the reference direction. By setting the ratio of the surface roughness SMD obtained by the KES method to the reference direction and the direction straight from the reference direction to be 0.30 or more, preferably 0.35 or more, more preferably 0.40 or more, Can prevent excessive reduction of transverse tensile strength. On the other hand, by setting the ratio of the surface roughness SMD measured by the KES method to 0.85 or less for the reference direction and the direction straight to the reference direction, high gloss can be expressed. The ratio of the surface roughness SMD obtained by the KES method, which is measured with respect to the reference direction and the direction straight from the reference direction, can be controlled by, for example, appropriately adjusting the fiber orientation.

再者，於本發明中，基準方向和與基準方向直行的方向的藉由KES法而得的表面粗糙度SMD的比是藉由後述的方法來測定。In addition, in the present invention, the ratio of the surface roughness SMD obtained by the KES method between the reference direction and the direction straight from the reference direction is measured by the method described later.

重要的是本發明的紡黏不織布的基準方向的抗拉強度為與基準方向正交的方向的抗拉強度的3倍～6倍，更佳為3倍～4倍。於該抗拉強度的比小於3倍的情況下，有於不織布的成型加工時產生橫向收縮的擔憂。另一方面，若該抗拉強度的比大於6倍，則與基準方向正交的方向的抗拉強度不適於實用。關於抗拉強度的比，例如可藉由單位面積重量、平均單纖維徑及壓花輥（壓接率、溫度及線壓）來進行調整，或者藉由調整使用的聚烯烴樹脂的MFR來進行控制。What is important is that the tensile strength in the reference direction of the spunbonded nonwoven fabric of the present invention is 3 to 6 times the tensile strength in the direction orthogonal to the reference direction, and more preferably 3 to 4 times. In the case where the ratio of the tensile strength is less than 3 times, there is a possibility of lateral shrinkage during the molding process of the nonwoven fabric. On the other hand, if the ratio of the tensile strength is greater than 6 times, the tensile strength in the direction orthogonal to the reference direction is not suitable for practical use. Regarding the ratio of tensile strength, it can be adjusted by, for example, basis weight, average single fiber diameter, and embossing roll (crimping rate, temperature, and linear pressure), or by adjusting the MFR of the polyolefin resin used. control.

本發明的紡黏不織布較佳為藉由懸臂法測定的基準方向的硬挺度為10 mm～80 mm。藉由將硬挺度設為較佳為80 mm以下、更佳為70 mm以下、進而佳為67 mm以下、特佳為64 mm以下，而尤其是於作為衛生材料用的不織布來使用的情況下，可獲得充分的柔軟性。另外，關於硬挺度的下限，若設為太低的硬挺度，則有不織布的操作性差的情況，因此較佳為10 mm以上，更佳為20 mm以上。硬挺度可藉由單位面積重量、平均單纖維徑及壓花輥（壓接率、溫度及線壓）來調整。The spunbonded nonwoven fabric of the present invention preferably has a stiffness of 10 mm to 80 mm in the reference direction measured by the cantilever method. By setting the stiffness to preferably 80 mm or less, more preferably 70 mm or less, more preferably 67 mm or less, particularly preferably 64 mm or less, especially when used as a non-woven fabric for sanitary materials , Can obtain sufficient flexibility. In addition, with regard to the lower limit of the stiffness, if the stiffness is too low, the non-woven fabric may have poor handleability, so it is preferably 10 mm or more, and more preferably 20 mm or more. Stiffness can be adjusted by unit area weight, average single fiber diameter and embossing roll (crimping rate, temperature and line pressure).

本發明的紡黏不織布較佳為進而滿足以下式（1）。The spunbonded nonwoven fabric of the present invention preferably further satisfies the following formula (1).

GL/100≧95    …（1） 此處，G為光澤度的最大值，L為平均亮度。再者，如後述般，均是不具有單位的值。作為用於將GL/100設為所述範圍的方法，例如可列舉：增加潤滑劑的添加量、減小平均單纖維徑、減小平均纖維配向度、提高纖維配向度為0度～30度的纖維比例等方法。GL/100≧95 …(1) Here, G is the maximum value of gloss, and L is the average brightness. In addition, as will be described later, they are all values without units. As a method for setting GL/100 in the above-mentioned range, for example, increase the amount of lubricant added, decrease the average single fiber diameter, decrease the average fiber orientation degree, and increase the fiber orientation degree from 0 degrees to 30 degrees. The fiber ratio and other methods.

用所述式（1）的G與L的積除以100而得的值（以下，僅記載為「外觀的光澤強度」）是定量地表示紡黏不織布難以透明且有光澤的情況的指標，藉由該外觀的光澤強度為95以上、更佳為100以上，而成為有高級感且設計性優異、白並且光澤優異的絲綢般的不織布。另一方面，關於外觀的光澤強度，於本發明中，並未特別設置上限，但就光澤過強時晃眼而失去高級感的觀點而言，更佳為200以下。The value obtained by dividing the product of G and L of the formula (1) by 100 (hereinafter, simply described as "gloss intensity of appearance") is an index that quantitatively indicates that the spunbonded nonwoven fabric is difficult to be transparent and shiny. When the gloss strength of this appearance is 95 or more, more preferably 100 or more, it becomes a silk-like non-woven fabric with a sense of luxury, excellent design, white and excellent gloss. On the other hand, regarding the gloss strength of the appearance, in the present invention, the upper limit is not particularly set, but from the viewpoint of glare when the gloss is too strong and the sense of quality is lost, it is more preferably 200 or less.

再者，於本發明中，外觀的光澤強度的算出中所使用的G（光澤度的最大值）、L（平均亮度）分別是藉由以下方法來測定、算出的值。 （1）G（光澤度的最大值） 於本發明中，所謂紡黏不織布的G（光澤度的最大值），是指使用變角光度計使試樣旋轉0°～360°而測定的值（無單位）中的最大值。測定時例如可使用三維變角光度計（測角光度計（GONIOPHOTOMETER）GP-200）等，光源可使用12 V 50 W型的鹵素燈等，光接收器可使用光電倍增管等。 （2）L（平均亮度） 於本發明中，紡黏不織布的L（平均亮度）是採用藉由以下順序來測定的值。再者，圖像掃描時，例如可使用彩色複合機「文檔中心（DocuCentre）-VI C4471 PFS」（富士施樂（FUJI XEROX）股份有限公司）。 （1）於黑色襯紙（AC卡黑色#350）上黏貼紡黏不織布。 （2）使用彩色複合機，於全色、200 dpi的條件下進行掃描，製成紡黏不織布的彩色掃描圖像，並以JPG形式保存。 （3）自彩色掃描圖像切出6英吋×6英吋（1200像素×1200像素）的圖像。 （4）分割成0.1英吋×0.1英吋（20像素×20像素）的格子單元。 （5）於各格子中，將使用以下式子，並針對各畫素而由YUV彩色空間定義的亮度（無單位）的平均值設為平均亮度。In addition, in the present invention, G (the maximum value of gloss) and L (average brightness) used in the calculation of the gloss intensity of the appearance are values measured and calculated by the following methods, respectively. (1) G (the maximum value of gloss) In the present invention, the G (maximum glossiness) of the spunbonded nonwoven fabric refers to the maximum value (unitless) measured by rotating the sample from 0° to 360° using a variable angle photometer. For the measurement, for example, a three-dimensional goniophotometer (GONIOPHOTOMETER GP-200) can be used, a 12 V 50 W halogen lamp can be used as a light source, and a photomultiplier tube can be used as a light receiver. (2) L (average brightness) In the present invention, the L (average brightness) of the spunbonded nonwoven fabric is a value measured by the following procedure. In addition, for image scanning, for example, a color copier "DocuCentre-VI C4471 PFS" (FUJI XEROX Co., Ltd.) can be used. (1) Paste the spunbonded non-woven fabric on the black backing paper (AC卡黑#350). (2) Use a color composite machine to scan under the conditions of full color and 200 dpi to make a color scanned image of spunbonded non-woven fabric and save it in JPG format. (3) Cut out an image of 6 inches × 6 inches (1200 pixels × 1200 pixels) from the color scanned image. (4) Divide into grid units of 0.1 inches × 0.1 inches (20 pixels × 20 pixels). (5) In each grid, the average value of the brightness (unitless) defined by the YUV color space for each pixel using the following formula is defined as the average brightness.

（各畫素的亮度）=0.29891×R+0.58661×G+0.11448×B 此處，R、G、B分別表示RGB彩色模型的紅色、綠色、藍色的亮度（無單位）。(Brightness of each pixel)=0.29891×R+0.58661×G+0.11448×B Here, R, G, and B respectively represent the brightness (unitless) of red, green, and blue in the RGB color model.

本發明的紡黏不織布較佳為每單位面積重量的耐水壓為7 mmH2 O/（g/m2 ）～20 mmH2 O/（g/m2 ）。藉由將每單位面積重量的耐水壓設為所述範圍，可進一步提高對印刷性而言重要的表面的平滑性。耐水壓例如可藉由開纖方法、單位面積重量、平均單纖維徑及壓花輥（壓接率、溫度及線壓）來調整。The spunbonded nonwoven fabric of the present invention preferably has a water pressure resistance per unit area weight of 7 mmH 2 O/(g/m 2 ) to 20 mmH 2 O/(g/m 2 ). By setting the water pressure resistance per unit area weight within the above range, the smoothness of the surface, which is important for printability, can be further improved. The water pressure resistance can be adjusted by, for example, the fiber opening method, the weight per unit area, the average single fiber diameter, and the embossing roll (crimping rate, temperature, and linear pressure).

本發明的紡黏不織布的單位面積重量較佳為10 g/m2 ～100 g/m2 。藉由將單位面積重量設為較佳為10 g/m2 以上、更佳為13 g/m2 以上，而容易獲得具有良好的機械強度的紡黏不織布。另一方面，於將不織布用於衛生材料用途中的情況下，藉由將單位面積重量設為較佳為100 g/m2 以下、更佳為50 g/m2 以下、進而佳為30 g/m2 以下，而容易獲得適於衛生材料的具有適度的柔軟性的紡黏不織布。The weight per unit area of the spunbonded nonwoven fabric of the present invention is preferably 10 g/m 2 to 100 g/m 2 . By setting the weight per unit area to preferably 10 g/m 2 or more, more preferably 13 g/m 2 or more, it is easy to obtain a spunbonded nonwoven fabric with good mechanical strength. On the other hand, when the nonwoven fabric is used for sanitary materials, the weight per unit area is preferably 100 g/m 2 or less, more preferably 50 g/m 2 or less, and even more preferably 30 g. /m 2 or less, and it is easy to obtain a spunbonded non-woven fabric with moderate flexibility suitable for sanitary materials.

[紡黏不織布的製造方法] 接著，對製造本發明的紡黏不織布的方法的較佳態樣進行具體說明。[Manufacturing method of spunbond nonwoven fabric] Next, a preferred aspect of the method of manufacturing the spunbonded nonwoven fabric of the present invention will be described in detail.

本發明的紡黏不織布是藉由紡黏法而製造的長纖維不織布。作為不織布的製造方法，通常可列舉：紡黏法、閃紡（flash-spinning）法、濕式法、梳理法及氣流成網（air-laid）法等。該些中，紡黏法除了生產性或機械強度優異以外，亦可抑制短纖維不織布中容易產生的起毛或纖維的脫落。另外，藉由將捕集到的紡黏不織纖維料片或熱壓接後的紡黏不織布（均表述為S）積層多層為SS、SSS及SSSS，而生產性或質地均勻性提高。The spunbonded nonwoven fabric of the present invention is a long fiber nonwoven fabric manufactured by a spunbond method. As a manufacturing method of a nonwoven fabric, normally, a spunbonding method, a flash-spinning method, a wet method, a carding method, an air-laid method, etc. are mentioned. Among these, the spunbond method is excellent in productivity and mechanical strength, and can also suppress fluffing or fiber shedding that is likely to occur in the short-fiber nonwoven fabric. In addition, by laminating the collected spunbond nonwoven fiber web or the spunbonded nonwoven fabric (both expressed as S) after thermocompression into SS, SSS, and SSSS, the productivity or texture uniformity is improved.

於紡黏法中，首先，將熔融的熱塑性樹脂自紡絲模口以長纖維的形式紡出，對其利用噴射器並藉由壓縮空氣進行抽吸延伸後，於移動的網上捕集纖維，獲得不織纖維料片。進而，對所獲得的不織纖維料片實施熱接著處理，獲得紡黏不織布。In the spunbonding method, firstly, the molten thermoplastic resin is spun out in the form of long fibers from the spinning die, and the fibers are collected on the moving net after being drawn by an ejector and drawn by compressed air. , Obtain a non-woven fiber material sheet. Furthermore, heat bonding is performed on the obtained nonwoven fiber web to obtain a spunbonded nonwoven fabric.

作為紡絲模口或噴射器的形狀，可採用圓形或矩形等各種形狀者。其中，就壓縮空氣的使用量比較少而能量成本優異、難以產生絲條彼此的熔接或擦破、絲條的開纖亦容易的方面而言，可較佳地使用矩形模口與矩形噴射器的組合。As the shape of the spinning die or ejector, various shapes such as a circle or a rectangle can be adopted. Among them, the use of compressed air is relatively small, the energy cost is excellent, it is difficult to cause the welding or rubbing of the filaments, and the opening of the filaments is also easy. It is preferable to use a rectangular die and a rectangular ejector. The combination.

於本發明中，使聚烯烴系樹脂在擠出機中熔融，計量後供給至紡絲模口，以長纖維的形式紡出。將聚烯烴系樹脂熔融紡絲時的紡絲溫度較佳為200℃～270℃，更佳為210℃～260℃，進而佳為220℃～250℃。藉由將紡絲溫度設為所述範圍內，可製成穩定的熔融狀態，獲得優異的紡絲穩定性。In the present invention, the polyolefin-based resin is melted in an extruder, metered, and supplied to a spinning die to be spun as a long fiber. The spinning temperature during melt spinning of the polyolefin resin is preferably 200°C to 270°C, more preferably 210°C to 260°C, and still more preferably 220°C to 250°C. By setting the spinning temperature within the above range, a stable molten state can be obtained, and excellent spinning stability can be obtained.

紡絲模口的背壓較佳為設為0.1 MPa～6.0 MPa。藉由將背壓較佳為設為0.1 MPa～6.0 MPa、更佳為設為0.3 MPa～6.0 MPa、進而佳為設為0.5 MPa～6.0 MPa，可防止噴出均勻性惡化而產生纖維徑偏差、或者為了提高耐壓性而使模口大型化的情況。紡絲模口的背壓可藉由模口的噴出孔徑或噴出孔深度、紡絲溫度等來調整，其中，噴出孔徑的貢獻大。The back pressure of the spinning die is preferably set to 0.1 MPa to 6.0 MPa. By setting the back pressure preferably to 0.1 MPa to 6.0 MPa, more preferably to 0.3 MPa to 6.0 MPa, and more preferably to 0.5 MPa to 6.0 MPa, it is possible to prevent the deterioration of ejection uniformity and the occurrence of fiber diameter deviation, Or in order to increase the pressure resistance, the die mouth is enlarged. The back pressure of the spinning die can be adjusted by the ejection aperture or the depth of the ejection hole, the spinning temperature, etc., among which the ejection aperture contributes a lot.

經紡出的長纖維的絲條接下來經冷卻。作為對經紡出的絲條進行冷卻的方法，例如可列舉將冷風強制地吹附到絲條的方法、於絲條周圍的環境溫度下進行自然冷卻的方法、以及調整紡絲模口與噴射器間的距離的方法等，或者，可採用將該些方法組合的方法。另外，關於冷卻條件，可考慮到紡絲模口的每一單孔的噴出量、紡絲溫度及環境溫度等進行適宜地調整並加以採用。The spun filaments of long fibers are then cooled. As a method of cooling the spun yarn, for example, a method of forcibly blowing cold air to the yarn, a method of natural cooling at the ambient temperature around the yarn, and adjustment of the spinning die and jet The method of the distance between devices, etc., or a method of combining these methods can be adopted. In addition, the cooling conditions can be appropriately adjusted and adopted in consideration of the ejection amount per single hole of the spinning die, the spinning temperature, and the ambient temperature.

接著，經冷卻固化的絲條由自噴射器噴射的壓縮空氣牽引並延伸。Then, the cooled and solidified thread is drawn and stretched by the compressed air sprayed from the ejector.

紡絲速度較佳為3500 m/分鐘～6500 m/分鐘，更佳為4000 m/分鐘～6500 m/分鐘，進而佳為4500 m/分鐘～6500 m/分鐘。藉由將紡絲速度設為3500 m/分鐘～6500 m/分鐘，而具有高的生產性，另外，纖維的配向結晶化推進，可獲得高強度的長纖維。The spinning speed is preferably 3500 m/min to 6500 m/min, more preferably 4000 m/min to 6500 m/min, and still more preferably 4500 m/min to 6500 m/min. By setting the spinning speed to 3500 m/min to 6500 m/min, high productivity is achieved. In addition, the orientation crystallization of the fibers advances, and high-strength long fibers can be obtained.

通常，若提高紡絲速度，則紡絲性惡化，難以穩定地生產為絲狀，如上所述，藉由使用具有特定範圍的MFR的聚烯烴系樹脂，可容易穩定地對所謀求的聚烯烴纖維進行紡絲。Generally, if the spinning speed is increased, the spinnability is deteriorated, and it is difficult to stably produce filaments. As described above, by using a polyolefin resin having a specific range of MFR, it is easy to stably treat the desired polyolefin The fiber is spun.

繼而，將所獲得的長纖維捕集到移動的網上，獲得不織纖維料片。此處，若以高的紡絲速度進行延伸，則自噴射器出來的纖維於由高速氣流控制的狀態下被捕集到網，容易獲得纖維的纏繞少、均勻性高的不織布。Then, the obtained long fibers are collected on a moving net to obtain a non-woven fiber web. Here, if the stretching is performed at a high spinning speed, the fibers from the ejector are collected in the net under the control of the high-speed airflow, and it is easy to obtain a nonwoven fabric with less fiber entanglement and high uniformity.

此時，較佳態樣是將紡絲速度/線速度的比設為18以上。藉由將紡絲速度/線速度的比設為較佳為18以上、更佳為20以上，可將纖維以縱向配向的狀態捕集到移動的網上。 作為使自噴射器噴射出的絲條的纖維的朝向一樣地對齊的方法，可列舉：於噴射器與網之間設置帶角度的平板來誘導絲條的方法；藉由在所述平板設置多個角度不同的槽，而分離為沿著平板落下的絲條與沿著槽落下的絲條，從而於不織纖維料片流動方向上分散並開纖的方法；以及藉由在噴射器出口將多個角度不同的平板排列成梳齒狀，並使絲條沿著各平板落下，而於不織纖維料片流動方向上分散並開纖的方法等。At this time, it is preferable to set the ratio of spinning speed/line speed to 18 or more. By setting the ratio of spinning speed/line speed to preferably 18 or more, and more preferably 20 or more, the fibers can be collected on the moving net in a state of longitudinal alignment. As a method of uniformly aligning the orientations of the filaments ejected from the ejector, an angled flat plate is provided between the ejector and the net to induce the thread; A method in which two grooves with different angles are separated into the thread falling along the flat plate and the thread falling along the groove, thereby dispersing and opening the fiber in the direction of the flow of the non-woven fiber sheet; and A method in which a plurality of flat plates with different angles are arranged in a comb-tooth shape, and the threads are dropped along each flat plate, and dispersed and opened in the direction of the flow of the non-woven fiber sheet.

其中，藉由在噴射器出口將多個角度不同的平板排列成梳齒狀並使絲條沿著各平板落下而開纖的方法可使細纖維徑的絲條效率良好地於不織纖維料片流動方向上分散，並於未極力減速的情況下在經控制的狀態下開纖，因此對於使纖維的配向方向一致而言為較佳態樣。Among them, the method of arranging a plurality of flat plates with different angles in the ejector outlet into a comb-tooth shape and allowing the thread to fall along each flat plate to open the fiber can make the thread of the thin fiber diameter efficiently be used in the non-woven fiber material. The sheets are dispersed in the direction of flow, and are opened in a controlled state without decelerating as much as possible. Therefore, it is a preferable aspect to make the alignment direction of the fibers consistent.

另外，對於不織纖維料片，於網上自其單面抵接熱平面輥而暫時接著亦是較佳態樣。藉由如此進行，可防止於網上搬送的過程中不織纖維料片的表層翻捲或吹走而質地惡化的情況，改善自捕集絲條後直至熱壓接為止的搬送性。In addition, for the non-woven fiber web, it is also a preferable aspect to abut a hot flat roll from one side of the web to temporarily attach it. By doing so, it is possible to prevent the surface layer of the non-woven fibrous web from being rolled up or blown off during the process of transporting on the web and the texture is deteriorated, and the transportability from the collection of the thread to the thermocompression bonding can be improved.

繼而，藉由熱接著使所獲得的不織纖維料片一體化，藉此，可獲得所謀求的紡黏不織布。Then, the obtained non-woven fibrous web is integrated by thermal bonding, whereby the desired spunbonded non-woven fabric can be obtained.

作為使不織纖維料片熱接著的方法，可列舉：利用上下一對於輥表面分別實施有雕刻（凹凸部）的熱壓花輥、包含一個輥表面平坦（平滑）的輥與另一個於輥表面實施有雕刻（凹凸部）的輥的組合的熱壓花輥、以及包含上下一對平坦（平滑）的輥的組合的熱壓光輥等各種輥進行熱接著的方法；或藉由超音波焊頭（horn）的超音波振動進行熱熔接的超音波接著等方法。其中，就生產性優異、於部分熱接著部賦予強度、且於非接著部容易保持不織布特有的手感或肌膚觸感的方面而言，較佳態樣是使用上下一對於輥表面分別實施有雕刻（凹凸部）的熱壓花輥、或者包含一個輥表面平坦（平滑）的輥與另一個於輥表面實施有雕刻（凹凸部）的輥的組合的熱壓花輥。As a method of thermally bonding the nonwoven fiber web, there may be mentioned: using a hot embossing roll with engraving (concave-convex portion) on the upper and lower roll surfaces, a roll with a flat (smooth) surface and the other on the roll. A method of thermally bonding various rollers such as a combination of hot embossing rolls with engraved (concave and convex portions) rolls and a combination of a pair of top and bottom flat (smooth) rolls; or by ultrasonic waves The ultrasonic vibration of the horn is used for thermal welding, such as ultrasonic bonding. Among them, in terms of excellent productivity, imparting strength to a part of the thermally bonded part, and easy to maintain the unique hand and skin feel of the non-woven fabric in the non-bonded part, it is preferable to use the upper and the lower surface of the roller with engraving. A hot embossing roll (concave-convex portion), or a hot embossing roll including a combination of a roll with a flat (smooth) surface on one roll and a roll with an engraving (concave-convex portion) on the roll surface.

作為熱壓花輥的表面材質，為了獲得充分的熱壓接效果，且防止一個壓花輥的雕刻（凹凸部）轉印到另一個輥表面，較佳態樣是將金屬製輥與金屬製輥設為一對。As the surface material of the hot embossing roll, in order to obtain a sufficient thermal compression bonding effect and prevent the engraving (concavo-convex part) of one embossing roll from being transferred to the surface of another roll, it is preferable to use a metal roll and a metal roll. The rollers are set as a pair.

基於熱壓花輥的接著面積率較佳為5%～30%。藉由將接著面積率較佳為設為5%以上、更佳為設為8%以上、進而佳為設為10%以上，而作為紡黏不織布容易獲得充分的強度。另一方面，藉由將接著面積率較佳為設為30%以下、更佳為設為25%以下、進而佳為設為20%以下，而作為衛生材料用的紡黏不織布，容易獲得尤其是適於紙尿布用途中的使用的適度的柔軟性。即便於使用超音波接著的情況下，接著面積率亦較佳為相同的範圍。The bonding area ratio based on the hot embossing roll is preferably 5% to 30%. By setting the bonding area ratio to preferably 5% or more, more preferably 8% or more, and still more preferably 10% or more, it is easy to obtain sufficient strength as a spunbonded nonwoven fabric. On the other hand, by setting the bonding area ratio to preferably 30% or less, more preferably 25% or less, and still more preferably 20% or less, the spunbonded nonwoven fabric for sanitary materials can be easily obtained. It has moderate flexibility suitable for use in diapers. Even when ultrasonic bonding is used, the bonding area ratio is preferably in the same range.

此處所述的接著面積率是指接著部於紡黏不織布整體中所佔的面積比例。具體而言，於利用一對具有凹凸的輥進行熱接著的情況下，是指上側輥的凸部與下側輥的凸部重疊而與不織纖維料片抵接的部分（接著部）於紡黏不織布整體中所佔的比例。另外，於利用具有凹凸的輥與平面輥進行熱接著的情況下，是指具有凹凸的輥的凸部與不織纖維料片抵接的部分（接著部）於紡黏不織布整體中所佔的面積比例。另外，於進行超音波接著的情況下，是指藉由超音波加工而熱熔接的部分（接著部）於紡黏不織布整體中所佔的面積比例。The bonding area ratio mentioned here refers to the area ratio of the bonding part in the entire spunbonded nonwoven fabric. Specifically, in the case of thermal bonding using a pair of uneven rollers, it means that the protrusions of the upper roller overlap with the protrusions of the lower roller and contact the nonwoven fiber web (adhesive portion). The proportion of spunbonded nonwoven fabric as a whole. In addition, in the case of thermal bonding using a roller with unevenness and a flat roller, it means that the portion where the protrusion of the roller with unevenness and the nonwoven fiber web abuts (adhesive portion) occupies the entire spunbonded nonwoven fabric Area ratio. In addition, in the case of ultrasonic bonding, it refers to the area ratio of the portion (bonded portion) thermally welded by ultrasonic processing to the entire spunbonded nonwoven fabric.

作為利用熱壓花輥或超音波接著而形成的接著部的形狀，可使用圓形、橢圓形、正方形、長方形、平行四邊形、菱形、正六邊形及正八邊形等。另外，接著部較佳為於紡黏不織布的長邊方向（搬送方向）與寬度方向上分別以一定的間隔均勻地存在。藉由如此進行，可減低紡黏不織布的強度偏差。As the shape of the bonding part formed by thermal embossing roll or ultrasonic bonding, circular, elliptical, square, rectangular, parallelogram, rhombus, regular hexagon, regular octagon, etc. can be used. Moreover, it is preferable that the adhesive part exists uniformly at predetermined intervals in the longitudinal direction (conveying direction) and the width direction of a spunbonded nonwoven fabric. By doing so, the strength deviation of the spunbonded non-woven fabric can be reduced.

關於熱接著時的熱壓花輥的表面溫度，較佳態樣是相對於所使用的聚烯烴系樹脂的熔點而設為-50℃～-15℃。藉由將熱輥的表面溫度相對於聚烯烴系樹脂的熔點而較佳為設為-50℃以上、更佳為設為-45℃以上，可獲得適度熱接著且強度可供於實用的紡黏不織布。另外，藉由將熱壓花輥的表面溫度相對於聚烯烴系樹脂的熔點而較佳為設為-15℃以下、更佳為設為-20℃以下，而抑制過度的熱接著，作為衛生材料用的紡黏不織布，可獲得尤其是適於紙尿布用途中的使用的適度的柔軟性。Regarding the surface temperature of the hot embossing roll at the time of thermal bonding, it is preferable to set it to -50°C to -15°C with respect to the melting point of the polyolefin resin used. By setting the surface temperature of the heat roller to the melting point of the polyolefin resin preferably at -50°C or higher, more preferably at -45°C or higher, a spinning with moderate heat bonding and practical strength can be obtained. Sticky non-woven fabric. In addition, by setting the surface temperature of the hot embossing roll to the melting point of the polyolefin resin, preferably -15°C or lower, more preferably -20°C or lower, excessive heat bonding is suppressed, which is a sanitary The spunbonded nonwoven fabric used as a material can obtain moderate flexibility especially suitable for use in paper diapers.

熱接著時的熱壓花輥的線壓較佳為50 N/cm～500 N/cm。藉由輥的線壓是較佳為50 N/cm以上、更佳為100 N/cm以上、進而佳為150 N/cm以上，而容易獲得適度熱接著且強度充分的紡黏不織布。另一方面，藉由熱壓花輥的線壓是較佳為500 N/cm以下、更佳為400 N/cm以下、進而佳為300 N/cm以下，而作為衛生材料用的紡黏不織布，容易獲得尤其是適於紙尿布用途中的使用的適度的柔軟性。The linear pressure of the hot embossing roll during thermal bonding is preferably 50 N/cm to 500 N/cm. The linear pressure of the roller is preferably 50 N/cm or more, more preferably 100 N/cm or more, and more preferably 150 N/cm or more, so that it is easy to obtain a spunbonded nonwoven fabric with moderate heat bonding and sufficient strength. On the other hand, the linear pressure by the hot embossing roll is preferably 500 N/cm or less, more preferably 400 N/cm or less, and even more preferably 300 N/cm or less, and is used as a spunbonded nonwoven fabric for sanitary materials , It is easy to obtain moderate flexibility especially suitable for use in paper diapers.

另外，出於調整紡黏不織布的厚度的目的，可於利用所述熱壓花輥進行的熱接著之前及/或之後，利用包含上下一對平面輥的熱壓光輥實施熱壓接。所謂上下一對平面輥，是指輥的表面沒有凹凸的金屬製輥或彈性輥，可將金屬製輥與金屬製輥設為一對、或將金屬製輥與彈性輥設為一對來使用。另外，此處，所謂彈性輥，是指包含與金屬製輥相比較具有彈性的材質的輥。作為彈性輥，可列舉：紙、棉及芳族聚醯胺紙等所謂的紙輥、或胺基甲酸酯系樹脂、環氧系樹脂、矽系樹脂、聚酯系樹脂及硬質橡膠、以及包含該些的混合物的樹脂製的輥等。 [實施例]In addition, for the purpose of adjusting the thickness of the spunbonded nonwoven fabric, before and/or after the thermal bonding performed by the thermal embossing roll, thermal compression bonding may be performed using a thermal calender roll including a pair of upper and lower flat rolls. A pair of top and bottom flat rollers refers to a metal roller or an elastic roller with no unevenness on the surface of the roller. A metal roller and a metal roller can be used as a pair, or a metal roller and an elastic roller can be used as a pair. . In addition, here, the elastic roller refers to a roller including a material having elasticity compared with a metal roller. Examples of elastic rollers include so-called paper rollers such as paper, cotton, and aromatic polyamide paper, or urethane-based resins, epoxy-based resins, silicone-based resins, polyester-based resins, and hard rubbers, and Resin rolls etc. containing these mixtures. [Example]

接著，基於實施例，對本發明進行具體說明。其中，本發明並不僅限定於該些實施例。Next, based on examples, the present invention will be specifically described. However, the present invention is not limited to these embodiments.

[1]聚烯烴系樹脂的熔體流動速率（MFR）： 聚烯烴系樹脂的熔體流動速率是藉由美國材料與試驗協會（American Society for Testing Material，ASTM）D-1238，於負荷為2160 g、溫度為230℃的條件下進行測定。[1] Melt flow rate (MFR) of polyolefin resin: The melt flow rate of polyolefin resin is measured by American Society for Testing Material (ASTM) D-1238 under the conditions of a load of 2160 g and a temperature of 230°C.

[2]平均單纖維徑（μm）： 利用噴射器進行牽引、延伸後，自捕集到網上的不織料片隨機採取10個小片樣品，利用顯微鏡拍攝500倍～1000倍的表面照片，對各樣品中分別為10根、共計100根纖維的寬度進行測定，將其平均值設為平均單纖維徑（μm）。[2] Average single fiber diameter (μm): After traction and extension with an ejector, 10 small samples are randomly selected from the non-woven material collected on the net, and the surface photos of 500 to 1000 times are taken with a microscope. For each sample, there are 10 pieces, totaling 100 pieces. The width of the root fiber is measured, and the average value thereof is defined as the average single fiber diameter (μm).

[3]紡絲速度（m/分鐘）： 根據所述平均單纖維徑與使用的樹脂的固體密度，將每10000 m長度的質量設為單纖維纖度，四捨五入到小數點以後第二位而算出。根據單纖維纖度（dtex）、與自各條件下設定的紡絲模口單孔噴出的樹脂的噴出量（以下，簡稱為單孔噴出量），並基於下式算出紡絲速度。 ·紡絲速度=（10000×單孔噴出量）/單纖維纖度。[3] Spinning speed (m/min): Based on the average single fiber diameter and the solid density of the resin used, the mass per 10,000 m length is defined as the single fiber fineness, and it is calculated by rounding to the second decimal place. The spinning speed is calculated based on the single fiber fineness (dtex) and the ejection amount of resin ejected from a single hole of the spinning die set under each condition (hereinafter, simply referred to as the single hole ejection amount). ·Spinning speed=(10000×single hole ejection amount)/single fiber size.

[4]單位面積重量： 基於日本工業標準（Japanese Industrial Standards，JIS）L1913：2010「一般不織布試驗方法」的6.2「每單位面積的質量」，於每1 m試樣寬度中採取3片20 cm×25 cm的試驗片，測量標準狀態下的各者的質量（g），將其平均值以每1 m2 的質量（g/m2 ）來表示。[4] Weight per unit area: Based on Japanese Industrial Standards (JIS) L1913:2010 "General Nonwoven Fabric Test Method" 6.2 "Mass per Unit Area", 3 pieces of 20 cm per 1 m sample width are taken For a test piece of ×25 cm, the mass (g) of each in the standard state is measured, and the average value is expressed as the mass per 1 m 2 (g/m 2 ).

[5]平均纖維配向度及纖維配向度為0度～30度的纖維比例： 採用如以下般測定的值。再者，於測定中，掃描式電子顯微鏡是使用基恩士（Keyence）股份有限公司製造的掃描式電子顯微鏡「VHX-D500」。 （1）自紡黏不織布，沿紡黏不織布的寬度方向（橫向方向）等間隔地採取10片寬20 mm×20 mm的試驗片。 （2）使用掃描式電子顯微鏡，對各樣品，將縱向方向設為0度，並對20根纖維測定相對於0度的纖維的傾斜。 （3）將共計200根纖維的傾斜角度的平均值設為平均纖維配向度。 （4）將共計200根中、纖維配向度為0度～30度的纖維根數設為纖維配向度為0度～30度的纖維比例。[5] The average fiber orientation degree and the proportion of fibers with a fiber orientation degree of 0 to 30 degrees: The value measured as follows is adopted. In addition, in the measurement, the scanning electron microscope "VHX-D500" manufactured by Keyence Co., Ltd. was used. (1) From the spunbonded nonwoven fabric, 10 test pieces with a width of 20 mm×20 mm are taken at equal intervals along the width direction (transverse direction) of the spunbonded nonwoven fabric. (2) Using a scanning electron microscope, for each sample, the longitudinal direction is set to 0 degrees, and the inclination of 20 fibers with respect to the fibers of 0 degrees is measured. (3) Let the average value of the inclination angles of a total of 200 fibers be the average fiber orientation degree. (4) In a total of 200 fibers, the number of fibers having a fiber orientation degree of 0 to 30 degrees is defined as the fiber ratio of a fiber orientation degree of 0 to 30 degrees.

再者，於切割樣品等中縱向方向不明的情況下，以如下方式決定。 （1）採取10處使朝向於一定方向上一致的不織布樣品。 （2）對於各樣品，將所述一定方向設為0度，對20根纖維測定相對於0度的纖維的傾斜，四捨五入到該些的平均值的小數點以後第一位而求出。 （3）相對於所述（2）的0度，同樣地測定相對於30度、60度、90度各方向的纖維的傾斜，四捨五入到該些的平均值的小數點以後第一位而求出。 （4）將針對所述四個方向而求出的傾斜角度的平均值最小的方向設為基準方向。In addition, when the longitudinal direction is unknown in a cut sample or the like, it is determined as follows. (1) Take 10 non-woven fabric samples that are aligned in a certain direction. (2) For each sample, the fixed direction is set to 0 degrees, the inclination of 20 fibers with respect to the fibers of 0 degrees is measured, and the average value is rounded to the first decimal place. (3) With respect to 0 degrees in (2), measure the inclination of the fibers in the directions of 30 degrees, 60 degrees, and 90 degrees in the same manner, and round to the first decimal place of the average value. out. (4) The direction in which the average value of the inclination angles obtained for the four directions is the smallest is set as the reference direction.

[6]紡黏不織布的藉由KES法而得的表面粗糙度SMD： 採用利用以下方法而測定的值。再者，測定中使用卡特泰科（Katotech）公司製造的自動化表面試驗機「KES-FB4-AUTO-A」。 （1）自紡黏不織布，沿紡黏不織布的寬度方向等間隔地採取3片寬200 mm×200 mm的試驗片。 （2）將試驗片設置於試樣台。 （3）利用施加有10 gf負荷的表面粗糙度測定用接觸件（原材料：ϕ0.5 mm鋼琴線，接觸長度：5 mm）掃描試驗片的表面，測定表面的凹凸形狀的平均偏差。 （4）於所有試驗片的基準方向（藉由所述方法來決定）和與基準方向直行的方向上分別對各3點進行所述測定。關於基準方向的9點、與基準方向直行的方向的9點，分別將平均偏差平均並四捨五入到小數點以後第二位，將如此而得的值設為基準方向的表面粗糙度SMD（μm）、與基準方向直行的方向的表面粗糙度SMD（μm），並將基準方向的表面粗糙度SMD（μm）/與基準方向直行的方向的表面粗糙度SMD（μm）的值設為表面粗糙度SMD的比。[6] Surface roughness SMD of spunbonded nonwoven fabric obtained by KES method: The value measured by the following method is used. In addition, the automated surface tester "KES-FB4-AUTO-A" manufactured by Katotech was used for the measurement. (1) From the spunbonded nonwoven fabric, three test pieces with a width of 200 mm×200 mm are taken at equal intervals along the width direction of the spunbonded nonwoven fabric. (2) Set the test piece on the sample stand. (3) Scan the surface of the test piece with a surface roughness measurement contact (raw material: ϕ0.5 mm piano wire, contact length: 5 mm) applied with a load of 10 gf, and measure the average deviation of the surface unevenness. (4) The measurement is performed at 3 points in each of the reference direction (determined by the method described above) of all test pieces and the direction straight from the reference direction. For 9 points in the reference direction and 9 points in the direction straight from the reference direction, the average deviations are averaged and rounded to the second decimal place. The value thus obtained is the surface roughness SMD (μm) in the reference direction. , Surface roughness SMD (μm) in the direction straight to the reference direction, and set the surface roughness SMD (μm) in the reference direction/SMD (μm) value in the direction straight to the reference direction as the surface roughness SMD ratio.

[7]抗拉強度： 依據JIS L1913：2010「一般不織布試驗方法」的6.3「拉伸強度及伸長率」的6.3.1「標準時」，利用以下方法測定抗拉強度。針對不織布的縱向方向、橫向方向，採取10點長200 mm×寬25 mm的試驗片。利用定速伸長型拉伸試驗機，以夾握間隔100 mm、拉伸速度100±10 mm/分鐘對試驗片實施拉伸試驗，對直至斷裂為止的最大負荷時的強度（N）進行求出直至0.1 N位，將其設為抗拉強度（N/2.5 cm）。[7] Tensile strength: According to JIS L1913:2010 "General Nonwoven Fabric Test Method", 6.3 "Tensile Strength and Elongation", 6.3.1 "Standard Time", the tensile strength is measured by the following method. Regarding the longitudinal and transverse directions of the non-woven fabric, 10 test pieces with a length of 200 mm and a width of 25 mm were taken. Using a constant-speed extension type tensile testing machine, a tensile test was performed on the test piece at a gripping interval of 100 mm and a tensile speed of 100±10 mm/min, and the strength (N) under the maximum load until breaking was determined. Up to the 0.1 N position, set it to the tensile strength (N/2.5 cm).

[8]硬挺度： 依據JIS L1913：2010「一般不織布試驗方法」的（6.7.3項），採取5片寬25 mm×150 mm的試驗片，並以試驗片的短邊沿著標尺（scale）基線的方式將試驗片放置於具有45°斜面的水平台上。手動使試驗片向斜面方向滑動，於試驗片的一端的中央點與斜面相接時，藉由標尺讀取另一端的位置的移動長度。對5片試驗片的表里進行測定，算出平均值。[8] Stiffness: According to JIS L1913:2010 "General Non-woven Fabric Test Method" (item 6.7.3), take 5 test pieces with a width of 25 mm×150 mm, and place the test pieces with the short side of the test piece along the baseline of the scale Placed on a water platform with a 45° inclined plane. Manually slide the test piece in the direction of the inclined plane, and when the center point of one end of the test piece meets the inclined plane, use a ruler to read the movement length of the position of the other end. The front and back sides of 5 test pieces were measured, and the average value was calculated.

[9]光澤度的最大值（G）： 依照所述方法進行測定。再者，測定時使用三維變角光度計（測角光度計（GONIOPHOTOMETER）GP-200）。光源是使用鹵素燈12 V 50 W型，光接收器使用光電倍增管，且於入射角、反射角均為60°下進行測定。[9] Maximum gloss (G): The measurement is carried out according to the method described. Furthermore, a three-dimensional goniophotometer (GONIOPHOTOMETER GP-200) was used for the measurement. The light source is a halogen lamp 12 V 50 W type, the light receiver uses a photomultiplier tube, and the incident angle and reflection angle are both measured at 60°.

[10]平均亮度（L）： 依照所述方法進行測定。再者，圖像掃描時，使用彩色複合機「文檔中心（DocuCentre）-VI C4471 PFS」（富士施樂（FUJI XEROX）股份有限公司）。[10] Average brightness (L): The measurement is carried out according to the method described. Furthermore, when scanning the image, use the color copier "Document Center (DocuCentre)-VI C4471 PFS" (FUJI XEROX Co., Ltd.).

[11]每單位面積重量的耐水壓： 依據JIS-L1092：2009「纖維製品的防水性試驗方法」的「7.1.1A法（低水壓法）」，測定不織布的每單位面積重量的耐水壓。沿不織布的寬度方向等間隔地採取5片寬150 mm×150 mm的試驗片，使用瑞士泰庫斯泰斯特（Swiss TEXTEST）公司的FX-3000-IV耐水壓試驗機「水分測定器（Hydro Tester）」，將試驗片設置於夾具（試驗片與水接觸的部分為100 cm2 的大小），以600 mm/分鐘±30 mm/分鐘的速度使裝有水的水準裝置的水位上升，以mm為單位測定於試驗片的里側自3處出水時的水位。利用5片試驗片進行該測定，求出其平均值作為每單位面積重量的耐水壓。[11] Water pressure resistance per unit area weight: According to "7.1.1A method (low water pressure method)" of JIS-L1092:2009 "Test methods for water resistance of textile products", the water pressure resistance per unit area weight of the non-woven fabric is measured . Five test specimens with a width of 150 mm×150 mm were taken at equal intervals along the width direction of the non-woven fabric, and the FX-3000-IV water pressure tester "moisture tester (Hydro Tester)", set the test piece in the jig (the part of the test piece in contact with water is 100 cm 2 in size), and raise the water level of the leveling device with water at a speed of 600 mm/min ± 30 mm/min. The unit of mm is the water level when water is discharged from three places on the inner side of the test piece. This measurement was performed with 5 test pieces, and the average value was calculated|required as the water pressure resistance per unit area weight.

[12]印刷性 於10 cm×10 cm的橡膠板的整面塗佈油性印台油，將橡膠板的塗佈有油墨的面按壓到紡黏不織布，保持10秒。去除橡膠板，用肉眼判定印刷性。印刷性的判定中，將沒有印刷不均或飛白的情況設為A，將有印刷不均或飛白的情況設為B。[12] Printability Apply oil-based stamp oil to the entire surface of a 10 cm×10 cm rubber sheet, and press the ink-coated surface of the rubber sheet onto the spunbonded non-woven fabric for 10 seconds. Remove the rubber sheet and judge the printability with the naked eye. In the judgment of printability, the case where there is no printing unevenness or whitening is set as A, and the case where there is printing unevenness or whitening is set as B.

（實施例1） 利用鞘成分用的擠出機將添加有5.0質量%的伸乙基雙硬脂酸醯胺作為脂肪酸醯胺化合物的MFR為200 g/10分鐘的聚丙烯樹脂熔融。另一方面，利用鞘成分用的擠出機將未添加伸乙基雙硬脂酸醯胺的MFR為200 g/10分鐘的聚丙烯樹脂熔融。以芯成分與鞘成分的質量比為50：50、伸乙基雙硬脂酸醯胺量於纖維整體中為2.5%的方式對該些進行計量，於紡絲溫度為235℃下，自孔徑ϕ為0.40 mm的矩形芯鞘模口以單孔噴出量為0.30 g/分鐘紡出絲條，將所述絲條冷卻固化後，利用矩形噴射器並藉由將噴射器的壓力設為0.55 MPa的壓縮空氣進行牽引、延伸。繼而，將其捕集到移動的網上，獲得包含聚丙烯長纖維的不織纖維料片。所獲得的聚丙烯長纖維的特性是纖度為0.71 dtex，由此換算的紡絲速度為4225 m/分鐘。關於紡絲性，於1小時的紡絲中斷絲為0次而良好。(Example 1) A polypropylene resin with an MFR of 200 g/10 minutes added with 5.0% by mass of ethylene distearate as a fatty acid amide compound was melted using an extruder for the sheath component. On the other hand, a polypropylene resin with an MFR of 200 g/10 minutes without addition of ethylene distearate was melted using an extruder for the sheath component. The mass ratio of the core component to the sheath component is 50:50, and the amount of ethylene distearate in the entire fiber is 2.5%. These are measured at a spinning temperature of 235°C, with a self-aperture A rectangular core-sheath die with a ϕ of 0.40 mm spun a filament with a single-hole ejection volume of 0.30 g/min. After the filament is cooled and solidified, a rectangular ejector is used and the ejector pressure is set to 0.55 MPa The compressed air is used for traction and extension. Then, it is collected on a moving net to obtain a non-woven fiber web containing polypropylene long fibers. The characteristic of the obtained polypropylene long fiber is that the fineness is 0.71 dtex, and the spinning speed converted from this is 4225 m/min. Regarding the spinnability, the number of spinning interruptions in 1 hour was 0, which was good.

接著，上輥使用金屬製且實施有水珠紋樣的雕刻的接著面積率11%的壓花輥，下輥使用由金屬製平面輥構成的上下一對熱壓花輥，以線壓為300 N/cm，於熱接著溫度為145℃的溫度下對所獲得的不織纖維料片進行熱接著，獲得單位面積重量為25 g/m2 的紡黏不織布。對所獲得的紡黏不織布進行評價。將結果示於表1中。Next, the upper roller uses a metal embossing roller with a water drop pattern engraving and a bonding area ratio of 11%, and the lower roller uses a pair of upper and lower hot embossing rollers composed of a metal flat roller, with a linear pressure of 300 N /cm, the obtained non-woven fiber web was thermally bonded at a temperature of 145° C. to obtain a spunbonded non-woven fabric with a basis weight of 25 g/m 2. The obtained spunbonded nonwoven fabric was evaluated. The results are shown in Table 1.

（實施例2） 將單位面積重量設為15 g/m2 ，並將線速度設為160 m/分鐘，除此以外，藉由與實施例1相同的方法獲得紡黏不織布。對所獲得的紡黏不織布進行評價。將結果示於表1中。(Example 2) A spunbonded nonwoven fabric was obtained by the same method as Example 1, except that the weight per unit area was 15 g/m 2 and the linear speed was 160 m/min. The obtained spunbonded nonwoven fabric was evaluated. The results are shown in Table 1.

（實施例3） 將鞘成分的伸乙基雙硬脂酸醯胺的添加量設為3.0質量%，除此以外，藉由與實施例1相同的方法獲得紡黏不織布。所獲得的聚丙烯長纖維的特性是纖度為0.73 dtex，由此換算的紡絲速度為4109 m/分鐘。關於紡絲性，於1小時的紡絲中斷絲為0次而良好。對所獲得的紡黏不織布進行評價。將結果示於表1中。(Example 3) The spunbonded nonwoven fabric was obtained by the same method as in Example 1 except that the addition amount of the sheath component ethylene distearate was 3.0% by mass. The characteristic of the obtained polypropylene long fiber is that the fineness is 0.73 dtex, and the spinning speed calculated from this is 4109 m/min. Regarding the spinnability, the number of spinning interruptions in 1 hour was 0, which was good. The obtained spunbonded nonwoven fabric was evaluated. The results are shown in Table 1.

（實施例4） 於鞘成分中並不添加伸乙基雙硬脂酸醯胺，除此以外，藉由與實施例1相同的方法獲得紡黏不織布。所獲得的聚丙烯長纖維的特性是纖度為0.74 dtex，由此換算的紡絲速度為4054 m/分鐘。關於紡絲性，於1小時的紡絲中斷絲為0次而良好。對所獲得的紡黏不織布進行評價。將結果示於表1中。(Example 4) Except that ethylene distearate was not added to the sheath component, the spunbonded non-woven fabric was obtained by the same method as in Example 1. The characteristic of the obtained polypropylene long fiber is that the fineness is 0.74 dtex, and the spinning speed converted from this is 4054 m/min. Regarding the spinnability, the number of spinning interruptions in 1 hour was 0, which was good. The obtained spunbonded nonwoven fabric was evaluated. The results are shown in Table 1.

（實施例5） 將鞘成分的伸乙基雙硬脂酸醯胺的添加量設為0.5質量%，將單孔噴出量設為0.40 g/分鐘，將單位面積重量設為15 g/m2 ，將線速度設為200 m/分鐘，除此以外，藉由與實施例1相同的方法獲得紡黏不織布。所獲得的聚丙烯長纖維的特性是纖度為0.85 dtex，由此換算的紡絲速度為4705 m/分鐘。關於紡絲性，於1小時的紡絲中斷絲為0次而良好。對所獲得的紡黏不織布進行評價。將結果示於表1中。(Example 5) The added amount of ethylene distearate as the sheath component was 0.5% by mass, the single-hole ejection amount was 0.40 g/min, and the weight per unit area was 15 g/m 2 , Except that the linear speed was set to 200 m/min, the spunbonded non-woven fabric was obtained by the same method as in Example 1. The characteristic of the obtained polypropylene long fiber is that the fineness is 0.85 dtex, and the spinning speed converted from this is 4705 m/min. Regarding the spinnability, the number of spinning interruptions in 1 hour was 0, which was good. The obtained spunbonded nonwoven fabric was evaluated. The results are shown in Table 1.

（比較例1） 將單孔噴出量設為0.40 g/分鐘，將單位面積重量設為10 g/m2 ，並將線速度設為300 m/分鐘，除此以外，藉由與實施例4相同的方法獲得紡黏不織布。所獲得的聚丙烯長纖維的特性是纖度為0.91 dtex，由此換算的紡絲速度為3823 m/分鐘。關於紡絲性，於1小時的紡絲中斷絲為0次而良好。對所獲得的紡黏不織布進行評價。將結果示於表1中。(Comparative Example 1) In addition, the single-hole ejection rate was set to 0.40 g/min, the weight per unit area was set to 10 g/m 2 , and the linear velocity was set to 300 m/min. The same method is used to obtain spunbonded non-woven fabric. The characteristic of the obtained polypropylene long fiber is that the fineness is 0.91 dtex, and the spinning speed converted from this is 3823 m/min. Regarding the spinnability, the number of spinning interruptions in 1 hour was 0, which was good. The obtained spunbonded nonwoven fabric was evaluated. The results are shown in Table 1.

（比較例2） 芯成分、鞘成分均使用MFR為40 g/10分鐘的聚丙烯樹脂，並將噴射器的壓力設為0.30 MPa，除此以外，藉由與實施例5相同的方法獲得紡黏不織布。所獲得的聚丙烯長纖維的特性是纖度為1.30 dtex，由此換算的紡絲速度為3076 m/分鐘。關於紡絲性，於1小時的紡絲中斷絲為0次而良好。對所獲得的紡黏不織布進行評價。將結果示於表1中。(Comparative example 2) A polypropylene resin with an MFR of 40 g/10 minutes was used for both the core component and the sheath component, and the ejector pressure was set to 0.30 MPa, except that the spunbonded nonwoven fabric was obtained by the same method as in Example 5. The characteristic of the obtained polypropylene long fiber is that the fineness is 1.30 dtex, and the spinning speed converted from this is 3076 m/min. Regarding the spinnability, the number of spinning interruptions in 1 hour was 0, which was good. The obtained spunbonded nonwoven fabric was evaluated. The results are shown in Table 1.

[表1] [表1] 單位 實施例1 實施例2 實施例3 實施例4 實施例5 比較例1 比較例2 芯成分 樹脂 樹脂的種類 - PP PP PP PP PP PP PP MFR g/10分鐘 200 200 200 200 200 200 40 添加劑 添加劑的種類 - 無 無 無 無 無 無 無 添加量 質量% 0 0 0 0 0 0 0 鞘成分 樹脂 樹脂的種類 - PP PP PP PP PP PP PP MFR g/10分鐘 200 200 200 200 200 200 40 添加劑 添加劑的種類 - 伸乙基雙 硬脂酸醯胺 伸乙基雙 硬脂酸醯胺 伸乙基雙 硬脂酸醯胺 無 伸乙基雙 硬脂酸醯胺 無 伸乙基雙 硬脂酸醯胺 添加量 質量% 5.0 5.0 3.0 0 0.5 0 0.5 單孔噴出量 g/分鐘 0.30 0.30 0.30 0.30 0.40 0.40 0.40 平均單纖維徑 μm 9.97 9.97 10.1 10.2 10.9 12.1 13.5 紡絲速度 m/分鐘 4225 4225 4109 4054 4705 3823 3076 線速度 m/分鐘 95 160 95 95 200 300 200 紡絲速度/線速度 - 44 26 43 43 24 13 15 平均纖維配向度 ° 18 26 23 28 25 32 35 纖維配向度為0度～30度的纖維比例 % 72 69 73 62 67 56 46 表面粗糙度SMD的 基準方向和與基準方向直行的 方向的比 - 0.54 0.55 0.53 0.66 0.58 0.89 0.90 單位面積重量 g/m2 25 15 25 25 15 10 15 強力比 - 5.1 4.9 3.5 3.6 3.2 3.1 2.3 硬挺度 mm 56 36 51 69 45 30 44 每單位面積重量的耐水壓 mmH2 O/（g/m2 ） 10.3 9.5 8.0 8.2 7.2 5.0 6.2 G - 86 91 83 80 82 75 72 L - 166 147 154 154 148 122 123 GL/100 - 143 134 128 123 121 92 89 印刷性 - A A A A A B B [Table 1] [Table 1] unit Example 1 Example 2 Example 3 Example 4 Example 5 Comparative example 1 Comparative example 2 Core component Resin Type of resin - PP PP PP PP PP PP PP MFR g/10 minutes 200 200 200 200 200 200 40 additive Types of additives - without without without without without without without Add amount quality% 0 0 0 0 0 0 0 Sheath composition Resin Type of resin - PP PP PP PP PP PP PP MFR g/10 minutes 200 200 200 200 200 200 40 additive Types of additives - Ethylene Distearate Ethylene Distearate Ethylene Distearate without Ethylene Distearate without Ethylene Distearate Add amount quality% 5.0 5.0 3.0 0 0.5 0 0.5 Single hole ejection volume g/min 0.30 0.30 0.30 0.30 0.40 0.40 0.40 Average single fiber diameter μm 9.97 9.97 10.1 10.2 10.9 12.1 13.5 Spinning speed m/min 4225 4225 4109 4054 4705 3823 3076 Line speed m/min 95 160 95 95 200 300 200 Spinning speed/line speed - 44 26 43 43 twenty four 13 15 Average fiber orientation ° 18 26 twenty three 28 25 32 35 The proportion of fibers whose fiber orientation is 0°～30° % 72 69 73 62 67 56 46 The ratio of the surface roughness SMD reference direction to the direction straight from the reference direction - 0.54 0.55 0.53 0.66 0.58 0.89 0.90 Unit area weight g/m 2 25 15 25 25 15 10 15 Strength ratio - 5.1 4.9 3.5 3.6 3.2 3.1 2.3 Stiffness mm 56 36 51 69 45 30 44 Water pressure resistance per unit area weight mmH 2 O/(g/m 2 ) 10.3 9.5 8.0 8.2 7.2 5.0 6.2 G - 86 91 83 80 82 75 72 L - 166 147 154 154 148 122 123 GL/100 - 143 134 128 123 121 92 89 Printability - A A A A A B B

實施例1～實施例5為表面的平滑性優異、且具有良好的印刷性的結果。另外，纖維的平均單纖維徑為9.97 μm～10.9 μm，針對基準方向和與基準方向直行的方向進行測定的藉由KES法而得的表面粗糙度的比為0.53～0.66，因此不織布的柔軟性與光澤優異。另一方面，如比較例1與比較例2中所示般，於平均纖維配向度的數值比較高、平均單纖維徑超過11.9 μm、進而表面粗糙度的比大於0.85的情況下，不織布表面的凹凸變大，為印刷性、光澤性差的結果。Examples 1 to 5 are the results of excellent surface smoothness and good printability. In addition, the average single fiber diameter of the fiber is 9.97 μm to 10.9 μm, and the ratio of the surface roughness measured by the KES method to the reference direction and the direction straight to the reference direction is 0.53 to 0.66, so the flexibility of the nonwoven fabric With excellent gloss. On the other hand, as shown in Comparative Example 1 and Comparative Example 2, when the value of the average fiber orientation degree is relatively high, the average single fiber diameter exceeds 11.9 μm, and the surface roughness ratio is greater than 0.85, the surface of the nonwoven fabric is The increase in unevenness is the result of poor printability and gloss.

無without

無without

Claims (8)

一種紡黏不織布，其為包含聚烯烴系樹脂的紡黏不織布，且平均纖維配向度為0度～30度，纖維配向度為0度～30度的纖維比例為50%～80%，並且基準方向的抗拉強度為與基準方向正交的方向的抗拉強度的3倍～6倍。A spunbonded nonwoven fabric, which is a spunbonded nonwoven fabric containing polyolefin resin, and the average fiber orientation degree is 0 to 30 degrees, and the proportion of fibers with the fiber orientation degree of 0 to 30 degrees is 50% to 80%, and the benchmark The tensile strength in the direction is 3 to 6 times the tensile strength in the direction orthogonal to the reference direction. 如請求項1所述的紡黏不織布，其中構成所述紡黏不織布的纖維的平均單纖維徑為6.5 μm～11.9 μm。The spunbonded nonwoven fabric according to claim 1, wherein the average single fiber diameter of the fibers constituting the spunbonded nonwoven fabric is 6.5 μm to 11.9 μm. 如請求項1或請求項2所述的紡黏不織布，其中至少針對單面的基準方向和與基準方向直行的方向進行測定的藉由川端評估系統法而得的表面粗糙度SMD的比為0.30～0.85。The spunbonded nonwoven fabric according to claim 1 or claim 2, wherein the ratio of the surface roughness SMD obtained by the Kawabata Evaluation System Method measured at least for the reference direction of one side and the direction straight from the reference direction is 0.30 ~0.85. 如請求項1至請求項3中任一項所述的紡黏不織布，其中所述聚烯烴系樹脂包含碳數23～50的脂肪酸醯胺化合物。The spunbonded nonwoven fabric according to any one of claims 1 to 3, wherein the polyolefin-based resin contains a fatty acid amide compound having a carbon number of 23 to 50. 如請求項4所述的紡黏不織布，其中所述聚烯烴系樹脂中的所述脂肪酸醯胺化合物的含量為0.01質量%～5.0質量%。The spunbonded nonwoven fabric according to claim 4, wherein the content of the fatty acid amide compound in the polyolefin resin is 0.01% by mass to 5.0% by mass. 如請求項5所述的紡黏不織布，其中所述脂肪酸醯胺包含伸乙基雙硬脂酸醯胺。The spunbonded nonwoven fabric according to claim 5, wherein the fatty acid amide comprises ethylene distearate. 如請求項1至請求項6中任一項所述的紡黏不織布，其中藉由懸臂法測定的基準方向的硬挺度為10 mm～80 mm。The spunbonded nonwoven fabric according to any one of claims 1 to 6, wherein the stiffness in the reference direction measured by the cantilever method is 10 mm to 80 mm. 如請求項1至請求項7中任一項所述的紡黏不織布，其進而滿足以下式（1）， GL/100≧95    …（1） 此處，G為光澤度的最大值，L為平均亮度。The spunbonded nonwoven fabric according to any one of claims 1 to 7, which in turn satisfies the following formula (1), GL/100≧95 …(1) Here, G is the maximum value of gloss, and L is the average brightness.
TW110110755A 2020-03-31 2021-03-25 Spun-bonded non-woven cloth TW202138639A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2020-062548 2020-03-31
JP2020-062547 2020-03-31
JP2020062548 2020-03-31
JP2020062547 2020-03-31

Publications (1)

Publication Number Publication Date
TW202138639A true TW202138639A (en) 2021-10-16

Family

ID=77928464

Family Applications (1)

Application Number Title Priority Date Filing Date
TW110110755A TW202138639A (en) 2020-03-31 2021-03-25 Spun-bonded non-woven cloth

Country Status (5)

Country Link
JP (1) JP7180761B2 (en)
KR (1) KR20220150911A (en)
CN (1) CN115315547A (en)
TW (1) TW202138639A (en)
WO (1) WO2021200369A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7188732B2 (en) 2018-07-09 2022-12-13 下西技研工業株式会社 One-way clutch and rotary damper device with one-way clutch

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1283764C (en) * 1986-09-29 1991-05-07 Mitsui Chemicals Inc. Very soft polyolefin spunbonded nonwoven fabric and its production method
EP0772484B1 (en) * 1994-07-28 2008-02-27 Pall Corporation Fibrous web and process of preparing same
JP4110651B2 (en) * 1997-12-26 2008-07-02 チッソ株式会社 Nonwoven fabric, method for producing the same, and absorbent article using the same
JP2003147672A (en) * 2001-11-09 2003-05-21 Kobe Steel Ltd Nonwoven fabric-manufacturing apparatus and manufacturing method therefor
JP2007197891A (en) * 2005-12-26 2007-08-09 Toyobo Co Ltd Spun-bond nonwoven fabric
JP2007169850A (en) * 2005-12-26 2007-07-05 Toyobo Co Ltd Spunbond nonwoven fabric
JP5001756B2 (en) * 2007-08-31 2012-08-15 大王製紙株式会社 Disposable paper diapers
JP5693267B2 (en) * 2011-02-01 2015-04-01 ユニ・チャーム株式会社 Absorbent articles
JPWO2013047746A1 (en) * 2011-09-29 2015-03-26 東レ株式会社 Separation membrane, separation membrane element and method for producing separation membrane
JP6012190B2 (en) 2012-02-07 2016-10-25 旭化成株式会社 Long fiber nonwoven fabric with excellent flexibility
JP2017113670A (en) * 2015-12-22 2017-06-29 東レ株式会社 Filter medium for air filter and air filter
WO2018079635A1 (en) * 2016-10-27 2018-05-03 東レ株式会社 Spunbond nonwoven fabric and method for manufacturing same
JP7247884B2 (en) * 2017-10-17 2023-03-29 東レ株式会社 spunbond nonwoven fabric
KR102487720B1 (en) * 2018-02-28 2023-01-13 도레이 카부시키가이샤 spunbond nonwoven fabric

Also Published As

Publication number Publication date
CN115315547A (en) 2022-11-08
KR20220150911A (en) 2022-11-11
WO2021200369A1 (en) 2021-10-07
JPWO2021200369A1 (en) 2021-10-07
JP7180761B2 (en) 2022-11-30

Similar Documents

Publication Publication Date Title
TWI770366B (en) Spunbond Nonwoven
TWI722270B (en) Spunbond non-woven fabric
WO2014119687A1 (en) Fibrous nonwoven fabric
TW201945457A (en) Non-woven fabric of crimped composite fiber and laminate thereof, and article including the laminate
JP7247884B2 (en) spunbond nonwoven fabric
TW202138639A (en) Spun-bonded non-woven cloth
JP6907560B2 (en) Spun bond non-woven fabric
JP7172250B2 (en) spunbond nonwoven fabric
TWI822865B (en) Spunbond nonwoven fabric
JP7040122B2 (en) Spunbond non-woven fabric
JP7409524B2 (en) spunbond nonwoven fabric
TWI810398B (en) Spunbond nonwovens, spunbond fibers, and laminated nonwovens
TW202142756A (en) Spun-bonded non-woven cloth
JP2020105641A (en) Spun-bonded nonwoven fabric
JP2022055759A (en) Spunbond nonwoven fabric
JP2021161592A (en) Spunbonded nonwoven fabric
TW202302946A (en) Spun-bonded nonwoven fabric and sheath-core type composite fiber
WO2022181590A1 (en) Spunbond nonwoven fabric and conjugated fiber
JP2022183506A (en) Spun-bonded nonwoven fabric and core-sheath type conjugate fiber
JP2020196962A (en) Spun-bonded nonwoven fabric
JP2023131245A (en) Spun-bonded non-woven fabric
JP2020196961A (en) Spun-bonded nonwoven fabric