TW202206672A - Protective garment and method for producing same - Google Patents
Protective garment and method for producing same Download PDFInfo
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- TW202206672A TW202206672A TW110128417A TW110128417A TW202206672A TW 202206672 A TW202206672 A TW 202206672A TW 110128417 A TW110128417 A TW 110128417A TW 110128417 A TW110128417 A TW 110128417A TW 202206672 A TW202206672 A TW 202206672A
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- nonwoven fabric
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
Abstract
Description
本發明是有關於一種防護服及其製造方法。The present invention relates to a protective suit and a manufacturing method thereof.
自先前以來，於去除粉塵、化學物質（以下為污染物質）等的作業或處理作業中，為了保護作業者的身體免受污染物質的影響而使用防護服。另外，於再生醫療的培養設施或醫藥品的製造現場，就自作業者的汗中所含的細菌或由穿著的衣物產生的塵土維持潔淨室內的無菌/無塵狀態的觀點而言，使用進行了滅菌處理的防護服（以下為滅菌服）。就防止污染物質自外部侵入、細菌或塵土自內部流出的防塵性的觀點而言，該些用途中使用的防護服可較佳地使用纖維間的孔徑小且緻密的閃光紡絲不織布、或積層了聚烯烴系的微多孔膜與不織布的布料。另一方面，由於該些布料的透氣性低，因此於製成防護服時有衣服內容易聚集熱的傾向，因此不適合於夏季的室外或室內的暑熱環境下穿著。In the past, protective clothing has been used to protect the body of the worker from the contaminants in the removal of dust, chemical substances (hereinafter referred to as contaminants), or the like. In addition, in regenerative medicine culture facilities or pharmaceutical manufacturing sites, from the viewpoint of maintaining the sterile/dust-free state in the clean room from bacteria contained in the sweat of the worker or dust generated from the clothes worn Sterilized protective clothing (hereinafter referred to as sterilized clothing). From the viewpoint of dust resistance to prevent the intrusion of contaminants from the outside and the outflow of bacteria or dust from the inside, the protective clothing used in these applications can preferably use a flash spun nonwoven fabric with a small and dense inter-fiber pore size, or a laminate. Polyolefin-based microporous membrane and non-woven fabric. On the other hand, since these fabrics have low air permeability, heat tends to collect in the clothes when they are made into protective clothing, and therefore, they are not suitable for wearing outdoors in summer or in hot indoor environments.
此處，專利文獻1中提出了於駐極體不織布的兩面積層紡黏不織布的結構來作為防塵性、透氣性優異且可於夏季的室外或室內的暑熱環境下較佳地使用的防護服用布料。本防護服用布料藉由將纖維間的孔徑較大的紡黏不織布、熔噴不織布作為基材而確保透氣性，藉由對熔噴不織布進行駐極體化，可捕集污染物質而具有防塵性，從而可較佳地用於防護服。
[現有技術文獻]
[專利文獻]Here,
專利文獻1：國際公開第2016/104492號Patent Document 1: International Publication No. 2016/104492
[發明所欲解決之課題]
於使用了所述專利文獻1所揭示的防護服用布料的防護服中，藉由設為積層了紡黏不織布層與進行了駐極體化的熔噴不織布的布料結構，可獲得具有防塵性且透氣性亦優異的防護服，可於包括夏季的室外或室內的暑熱環境下在內的所述用途中較佳地使用。[The problem to be solved by the invention]
In the protective clothing using the protective clothing fabric disclosed in
另一方面，由於採用進行了駐極體化的熔噴不織布，因此製造時/使用時的大氣中浮游的微細的灰塵、塵土等異物容易附著，另外，由於構成防護服的外側的面的紡黏不織布或熔噴不織布的平滑性低，因此存在難以去除附著的異物的課題。進而，於潔淨室內使用的滅菌服中，製造時附著的異物有可能會降低潔淨度或混入製品中，因此期望減少附著異物。On the other hand, since the electretized melt-blown nonwoven fabric is used, foreign matters such as fine dust and dust floating in the atmosphere during manufacture and use are easily adhered. Since sticky nonwoven fabrics or meltblown nonwoven fabrics have low smoothness, there is a problem that it is difficult to remove adhering foreign matter. Furthermore, in the sterilization clothing used in a clean room, there is a possibility that foreign matter adhering at the time of manufacture may lower the cleanliness or be mixed into the product, so it is desired to reduce the adhering foreign matter.
因此，本發明鑑於所述課題，要提供具有優異的防塵性、透氣性及機械特性且不易附著灰塵、塵土等異物並容易去除附著的異物的防護服及其製造方法。 [解決課題之手段]Therefore, in view of the above-mentioned problems, the present invention provides a protective suit which has excellent dust resistance, air permeability, and mechanical properties, does not easily adhere foreign matter such as dust and dust, and easily removes the adhered foreign matter, and a manufacturing method thereof. [Means of Solving Problems]
本發明是為解決所述課題而採用以下結構的防護服。即， （1）一種防護服，是至少包含依次具有不織布（A）、駐極體不織布（B）及不織布（C）的積層不織布的防護服，所述不織布（A）是包含芯鞘型複合短纖維的熱黏合不織布，所述不織布（A）是所述積層不織布的第一最外層，所述第一最外層構成所述防護服的外側的面，所述駐極體不織布（B）是熔噴不織布，所述不織布（C）是紡黏不織布，所述不織布（C）是所述積層不織布的第二最外層，所述第二最外層構成所述防護服的內側的面，具有縫製部； （2）如（1）所述的防護服，其中所述防護服的外側的面的利用川端評價系統（Kawabata Evaluation System，KES）法測定的表面粗糙度（標準化均數差（Standardised Mean Difference，SMD）值）為3.0以下，且摩擦係數（平均摩擦係數（MIU）值）為0.15以下； （3）如（1）或（2）所述的防護服，其中所述芯鞘型複合短纖維是同芯鞘纖維，所述芯鞘型複合短纖維所具備的鞘部含有聚乙烯，所述芯鞘型複合短纖維所具備的芯部含有聚丙烯或聚酯； （4）如（1）～（3）中任一項所述的防護服，其中所述積層不織布的透氣度為50 cm3 /cm2 /sec以上； （5）如（1）～（4）中任一項所述的防護服，其中所述防護服的外側的面側的水接觸角為80°以上； （6）如（1）～（5）中任一項所述的防護服，其中所述積層不織布具有多個層間，所述多個層間均具有熱熔系接著劑，所述多個層間中的各層間中的所述熱熔系接著劑的含量為0.5 g/m2 以上且2.0 g/m2 以下； （7）一種防護服的製造方法，是製造如所述（1）～（6）中任一項所述的防護服的方法，且依次包括：對包含芯鞘型複合短纖維的網實施壓延加工而獲得所述熱黏合不織布的步驟；積層熱黏合不織布、熔噴不織布及紡黏不織布而獲得積層不織布的步驟；以及縫製所述積層不織布而獲得防護服的步驟，所述壓延加工中的壓延溫度為構成所述芯鞘型複合短纖維的鞘部的樹脂的熔點以上且比所述熔點高30℃的溫度以下，線壓為100 N/cm～2000 N/cm。 [發明的效果]The present invention is a protective suit having the following structure in order to solve the above-mentioned problems. That is, (1) a protective clothing comprising at least a laminated nonwoven fabric having a nonwoven fabric (A), an electret nonwoven fabric (B), and a nonwoven fabric (C) in this order, the nonwoven fabric (A) comprising a core-sheath composite A thermally bonded non-woven fabric of short fibers, the non-woven fabric (A) is the first outermost layer of the laminated non-woven fabric, the first outermost layer constitutes the outer surface of the protective clothing, and the electret non-woven fabric (B) is Meltblown non-woven fabric, the non-woven fabric (C) is a spunbond non-woven fabric, the non-woven fabric (C) is the second outermost layer of the laminated non-woven fabric, and the second outermost layer constitutes the inner side of the protective clothing. (2) The protective clothing according to (1), wherein the surface roughness (Standardised Mean Difference (Standardised Mean Difference) of the outer surface of the protective clothing is measured by the Kawabata Evaluation System (KES) method; Difference, SMD) value) is 3.0 or less, and the friction coefficient (mean coefficient of friction (MIU) value) is 0.15 or less; (3) The protective clothing according to (1) or (2), wherein the core-sheath composite The staple fiber is a core-sheath fiber, the sheath part of the core-sheath composite staple fiber contains polyethylene, and the core part of the core-sheath composite staple fiber contains polypropylene or polyester; (4) As in ( The protective clothing according to any one of 1) to (3), wherein the air permeability of the laminated non-woven fabric is 50 cm 3 /cm 2 /sec or more; (5) according to any one of (1) to (4) The protective clothing, wherein the water contact angle of the outer surface side of the protective clothing is 80° or more; (6) The protective clothing according to any one of (1) to (5), wherein the laminate The non-woven fabric has a plurality of interlayers, each of the plurality of interlayers has a hot-melt adhesive, and the content of the hot-melt adhesive in each of the plurality of interlayers is 0.5 g/m 2 or more and 2.0 g/ m 2 or less; (7) A method for manufacturing a protective clothing, which is the method for manufacturing the protective clothing according to any one of the above (1) to (6), and which sequentially includes: forming a composite staple fiber containing a core-sheath type. The step of calendering the net to obtain the thermally bonded non-woven fabric; the step of laminating thermally bonded non-woven fabrics, meltblown non-woven fabrics and spunbond non-woven fabrics to obtain a laminated non-woven fabric; and sewing the laminated non-woven fabric to obtain a protective garment step, the calendering The rolling temperature during processing is equal to or higher than the melting point of the resin constituting the sheath portion of the core-sheath type composite short fiber and equal to or lower than the temperature 30°C higher than the melting point, and the linear pressure is 100 N/cm to 2000 N/cm. [Effect of invention]
根據本發明，可提供具有優異的防塵性、透氣性及機械特性且不易附著灰塵及塵土等異物並容易去除附著的異物的防護服及其製造方法。ADVANTAGE OF THE INVENTION According to this invention, the protective clothing which has excellent dustproofness, air permeability, and mechanical properties, and which does not easily adhere to foreign substances such as dust and dust, and which can easily remove the adhered foreign substances, and a manufacturing method thereof can be provided.
本發明的防護服是至少包含依次具有不織布（A）、駐極體不織布（B）及不織布（C）的積層不織布的防護服，所述不織布（A）是包含芯鞘型複合短纖維的熱黏合不織布，所述不織布（A）是所述積層不織布的第一最外層，所述第一最外層構成所述防護服的外側的面，所述駐極體不織布（B）是熔噴不織布，所述不織布（C）是紡黏不織布，所述不織布（C）是所述積層不織布的第二最外層，所述第二最外層構成所述防護服的內側的面，具有縫製部。The protective clothing of the present invention is a protective clothing comprising at least a laminated nonwoven fabric having a nonwoven fabric (A), an electret nonwoven fabric (B), and a nonwoven fabric (C) in this order, the nonwoven fabric (A) being a thermal Adhesive non-woven fabric, the non-woven fabric (A) is the first outermost layer of the laminated non-woven fabric, the first outermost layer constitutes the outer surface of the protective clothing, and the electret non-woven fabric (B) is a melt-blown non-woven fabric, The nonwoven fabric (C) is a spunbond nonwoven fabric, the nonwoven fabric (C) is the second outermost layer of the laminated nonwoven fabric, and the second outermost layer constitutes an inner surface of the protective suit and has a sewn portion.
本發明的防護服至少包含藉由將包含芯鞘型複合短纖維的熱黏合不織布、熔噴不織布及紡黏不織布依次積層而獲得的積層不織布。而且，包含芯鞘型複合短纖維的熱黏合不織布、熔噴不織布及紡黏不織布均具有透氣性，因此所述積層不織布亦具有透氣性。進而，藉由對相當於中間層的熔噴不織布進行駐極體化，所述積層不織布具有透氣性及防塵性，包含所述積層不織布的防護服亦具有透氣性及防塵性。進而，藉由利用包含芯鞘型複合短纖維的熱黏合不織布構成防護服的外側的面，可獲得異物不易附著且容易去除的防護服。The protective clothing of the present invention includes at least a laminated nonwoven fabric obtained by sequentially laminating thermally bonded nonwoven fabrics including core-sheath composite staple fibers, meltblown nonwoven fabrics, and spunbond nonwoven fabrics. Furthermore, the thermally bonded nonwoven fabric, the meltblown nonwoven fabric and the spunbond nonwoven fabric comprising the core-sheath composite staple fibers have air permeability, so the laminated nonwoven fabric also has air permeability. Furthermore, by electretizing the meltblown nonwoven fabric corresponding to the intermediate layer, the laminated nonwoven fabric has air permeability and dust resistance, and the protective clothing including the laminated nonwoven fabric also has air permeability and dust resistance. Furthermore, by constituting the outer surface of the protective clothing with the thermally bonded nonwoven fabric containing the core-sheath type composite short fibers, a protective clothing in which foreign matter is not easily adhered and can be easily removed can be obtained.
以下，依次對本發明的詳情進行說明。Hereinafter, the details of the present invention will be sequentially described.
＜不織布（A）：熱黏合不織布＞ 對包含本發明的芯鞘型複合短纖維的熱黏合不織布進行說明。包含本發明的芯鞘型複合短纖維的熱黏合不織布可藉由對芯鞘型複合短纖維進行熱黏合加工而獲得，是透氣性與不織布表面的平滑性優異且於製成積層不織布時賦予防護服所需的柔軟性的不織布。如上所述，就獲得兼具透氣性與平滑性且進而具有柔軟性的不織布的觀點而言，需要使用芯鞘型複合短纖維並進行熱黏合加工。即，藉由對包含使構成鞘部的樹脂的熔點比構成芯部的樹脂的熔點低的樹脂的芯鞘型複合短纖維進行熱黏合加工，鞘部的樹脂熔融且纖維彼此熔接，但鞘部的樹脂不易熔融，因此纖維彼此的熔接點變少，可製成除了平滑性以外透氣性與柔軟性亦優異的不織布。再者，所述熔點是由利用日本工業標準（Japanese Industrial Standards，JIS）K7121:2012「塑膠的轉移溫度測定方法」的4.2.項 示差掃描熱量測定（Differential Scanning Calorimetry，DSC）法測定的熔解溫度決定的值。<Non-woven fabric (A): Thermally bonded non-woven fabric> The thermally bonded nonwoven fabric containing the core-sheath type composite staple fiber of the present invention will be described. The thermally bonded nonwoven fabric comprising the core-sheath type composite staple fibers of the present invention can be obtained by thermally bonding the core-sheath type composite staple fibers, and is excellent in air permeability and surface smoothness of the nonwoven fabric, and provides protection when it is made into a laminated nonwoven fabric. Non-woven fabric with the softness required for clothing. As described above, from the viewpoint of obtaining a nonwoven fabric having both air permeability and smoothness, and furthermore flexibility, it is necessary to use core-sheath type composite staple fibers and perform thermal bonding processing. That is, by thermally bonding the core-sheath type composite short fibers containing the resin whose melting point of the resin constituting the sheath portion is lower than the melting point of the resin constituting the core portion, the resin of the sheath portion is melted and the fibers are fused to each other, but the sheath portion is fused to each other. The resin is not easily melted, so the fusion points between fibers are reduced, and in addition to smoothness, a nonwoven fabric with excellent air permeability and flexibility can be produced. In addition, the said melting point is the melting temperature measured by the differential scanning calorimetry (Differential Scanning Calorimetry, DSC) method of Item 4.2. determined value.
進而，本發明中，藉由使用纖維不具有連續性且柔軟的短纖維，即使於進行熱黏合加工的情況下亦可獲得具有柔軟性的不織布。一般而言，包含短纖維的不織布（熱黏合加工前）具有柔軟性優異且另一方面拉伸強度或耐磨損性等機械特性差的特徵，即纖維不具有連續性，因此於拉伸時容易斷裂，於磨損時短纖維容易脫落，因此不適合於防護服用途。藉由對具有此種特徵的短纖維不織布進行熱黏合加工，可充分利用短纖維的優點，同時製成適合於防護服用途的不織布。另一方面，於對紡黏不織布之類的長纖維進行熱黏合加工的情況下，雖然可獲得與短纖維同樣的平滑性優異的不織布，但由於纖維具有連續性，因此成為柔軟性差的不織布，成為不適合於防護服用途的不織布。Furthermore, in this invention, the nonwoven fabric which has flexibility can be obtained by using the short fiber which does not have continuous fiber and is soft even when thermal bonding is performed. In general, non-woven fabrics containing short fibers (before thermal bonding processing) are characterized by excellent flexibility and poor mechanical properties such as tensile strength and abrasion resistance. It is easy to break, and the short fibers are easy to fall off when worn, so it is not suitable for protective clothing. By thermally bonding the short fiber non-woven fabric with such characteristics, the advantages of the short fiber can be fully utilized, and a non-woven fabric suitable for protective clothing can be made at the same time. On the other hand, in the case of thermally bonding long fibers such as spunbond nonwovens, a nonwoven fabric with excellent smoothness similar to that of short fibers can be obtained, but because the fibers have continuity, it becomes a nonwoven fabric with poor flexibility. It becomes a non-woven fabric that is not suitable for protective clothing.
關於包含本發明的芯鞘型複合短纖維的熱黏合不織布的單位面積重量，只要考慮到製成積層不織布並製成防護服時所需的性能來適宜選定即可，較佳為10 g/m2 以上且30 g/m2 以下。藉由將熱黏合不織布的單位面積重量設為10 g/m2 以上，可利用熱黏合不織布均勻地被覆駐極體不織布（B）上，可進一步抑制灰塵、塵土等異物的附著。另一方面，藉由將上限設為30 g/m2 以下，防護服的透氣性更優異。The weight per unit area of the thermally bonded nonwoven fabric containing the core-sheath type composite staple fibers of the present invention may be appropriately selected in consideration of the properties required when the laminated nonwoven fabric is formed into protective clothing, and is preferably 10 g/m 2 More than 30 g/m 2 or less. By setting the weight per unit area of the thermally bonded nonwoven fabric to 10 g/m 2 or more, the electret nonwoven fabric (B) can be uniformly covered with the thermally bonded nonwoven fabric, and the adhesion of foreign matter such as dust and dirt can be further suppressed. On the other hand, by setting the upper limit to 30 g/m 2 or less, the air permeability of the protective clothing is more excellent.
其次，對本發明的芯鞘型複合短纖維進行說明。本發明的芯鞘型複合短纖維若為構成鞘部的樹脂與構成芯部的樹脂對比熔點低的樹脂的組合，則並無特別限定，鞘部的樹脂較佳為於低溫下熔融的聚乙烯。於構成鞘部的樹脂為聚乙烯的情況下，構成芯部的樹脂較佳為聚丙烯或聚酯。藉由設為鞘部包含聚乙烯、芯部包含聚丙烯或聚酯的結構，於製成不織布的情況下可製成柔軟性優異的不織布，使用了具有所述不織布的積層不織布的防護服的柔軟性亦優異。Next, the core-sheath type composite staple fiber of the present invention will be described. The core-sheath type composite short fiber of the present invention is not particularly limited as long as it is a combination of the resin constituting the sheath portion and the resin constituting the core portion having a lower melting point than the resin constituting the core portion, and the resin of the sheath portion is preferably polyethylene melted at a low temperature . When the resin constituting the sheath portion is polyethylene, the resin constituting the core portion is preferably polypropylene or polyester. By setting the structure in which the sheath part contains polyethylene and the core part contains polypropylene or polyester, when a nonwoven fabric is formed, a nonwoven fabric excellent in flexibility can be obtained, and a protective clothing using a laminated nonwoven fabric having the nonwoven fabric can be used. The flexibility is also excellent.
另外，本發明的芯鞘型複合短纖維較佳為芯成分的重心與複合纖維的重心實質上一致的同芯鞘纖維。藉由使用同芯鞘纖維，與使用偏芯鞘纖維的情況相比，進行熱黏合加工時的表面平滑性更優異，使用了具有所述不織布的積層不織布的防護服不易附著灰塵、塵土等異物並容易去除附著的異物。In addition, the core-sheath type composite staple fiber of the present invention is preferably a core-sheath fiber in which the center of gravity of the core component and the center of gravity of the composite fiber substantially coincide. Compared with the case of using eccentric sheath fibers, the surface smoothness during thermal bonding processing is more excellent by using the co-core sheath fibers, and the protective clothing using the laminated non-woven fabric having the non-woven fabric is less likely to adhere to foreign matter such as dust and dirt. And easy to remove the attached foreign matter.
芯鞘型複合短纖維的纖度並無特別限定，較佳為1.2 dtex以上，更佳為1.5 dtex以上。另一方面，上限較佳為10 dtex以下，更佳為5 dtex以下。藉由將纖度設為所述範圍，可兼具用於防護服用途時所需的機械特性與柔軟性。The fineness of the core-sheath type composite staple fiber is not particularly limited, but is preferably 1.2 dtex or more, more preferably 1.5 dtex or more. On the other hand, the upper limit is preferably 10 dtex or less, more preferably 5 dtex or less. By setting the fineness in the above-mentioned range, it is possible to have both mechanical properties and flexibility required for use in protective clothing.
其次，對本發明的熱黏合加工進行說明。本發明的熱黏合加工若為可對構成不織布（A）的芯鞘型複合短纖維彼此進行熱熔接以使不織布（A）的整體為均勻的密度且使不織布（A）的至少一個面平滑的方法，則並無特別限定，就抑制纖維的起毛而獲得具有更平滑的表面的不織布的觀點而言，較佳為壓延加工。於利用具有凹凸的輥使芯鞘型複合短纖維彼此熱熔接的壓花加工中，於通過輥的凹部的部位容易發生起毛。另外，於利用熱風使芯鞘型複合短纖維彼此熱熔接的熱風加工中，雖然可獲得柔軟性優異的不織布（A），但由於未壓接，因此有成為體積大的不織布（A）的傾向。Next, the thermal bonding process of the present invention will be described. In the thermal bonding process of the present invention, the core-sheath type composite short fibers constituting the nonwoven fabric (A) can be thermally fused to each other so that the entire nonwoven fabric (A) has a uniform density and at least one surface of the nonwoven fabric (A) is smooth. The method is not particularly limited, but from the viewpoint of suppressing the fluff of fibers and obtaining a nonwoven fabric having a smoother surface, calendering is preferred. In the embossing process in which the core-sheath type composite short fibers are thermally fused to each other by a roller having irregularities, fuzz tends to occur at a portion passing through the recessed portion of the roller. In addition, in the hot-air processing in which the core-sheath type composite short fibers are thermally fused to each other by hot air, although a nonwoven fabric (A) excellent in flexibility can be obtained, it tends to be a bulky nonwoven fabric (A) because it is not crimped. .
＜駐極體不織布（B）＞ 對本發明的駐極體不織布（B）進行說明。本發明的駐極體不織布（B）為熔噴不織布，是位於不織布（A）與不織布（C）的中間的層，是捕集灰塵、塵土等且有助於防塵性的層。<Electret non-woven fabric (B)> The electret nonwoven fabric (B) of the present invention will be described. The electret nonwoven fabric (B) of the present invention is a meltblown nonwoven fabric, is a layer located in the middle of the nonwoven fabric (A) and the nonwoven fabric (C), and is a layer that traps dust, dust, and the like and contributes to dust resistance.
所謂熔噴不織布，是指於將熔融的樹脂原料自紡絲頭噴出的同時吹附熱風並進行拉伸後利用收集輥捕集並使纖維彼此自熔接而成的不織布，與所述熱黏合不織布、後述的紡黏不織布相比，纖維間的孔徑小且緻密。本發明的防護服所具有的駐極體不織布（B）是將熔噴不織布駐極體化而成者，是有助於顯現本發明的防護服的優異的防塵性的層。The so-called melt-blown non-woven fabric refers to a non-woven fabric formed by blowing hot air while blowing the molten resin raw material from the spinning head and stretching, and then collecting the fibers with a collecting roller and self-welding the fibers to each other. , Compared with the spunbond non-woven fabric described later, the pore size between fibers is small and dense. The electret nonwoven fabric (B) included in the protective clothing of the present invention is obtained by electretizing a melt-blown nonwoven fabric, and is a layer that contributes to expressing the excellent dust resistance of the protective clothing of the present invention.
構成熔噴不織布的纖維的樹脂成分可列舉聚乙烯、聚丙烯等聚烯烴系樹脂、聚對苯二甲酸乙二酯、聚乳酸等聚酯系樹脂、尼龍樹脂，含有一種或兩種以上包含該些樹脂的纖維。該些樹脂中，就易紡絲性、成本等生產性、以及藉由駐極體化容易顯現防塵性等的觀點而言，較佳為聚丙烯。The resin components constituting the fibers of the melt-blown nonwoven fabric include polyolefin-based resins such as polyethylene and polypropylene, polyester-based resins such as polyethylene terephthalate and polylactic acid, and nylon resins. some resinous fibers. Among these resins, polypropylene is preferred from the viewpoints of easy spinnability, productivity such as cost, and easy development of dust resistance by electretization.
其次，構成熔噴不織布的纖維的平均纖維徑較佳為3 μm以上且8 μm以下。藉由將平均纖維徑設為3 μm以上，可確保纖維間的空隙，熔噴不織布的透氣性優異，因此製成積層不織布並進而使用所述積層不織布的防護服的透氣性優異。另一方面，藉由將平均纖維徑設為8 μm以下，纖維間的空隙變小，粉塵的捕集效率提高，因此於製成積層不織布並製成防護服時防塵性優異。Next, the average fiber diameter of the fibers constituting the meltblown nonwoven fabric is preferably 3 μm or more and 8 μm or less. By setting the average fiber diameter to be 3 μm or more, voids between fibers can be ensured, and the air permeability of the meltblown nonwoven fabric is excellent. Therefore, the protective clothing made of the laminated nonwoven fabric and further using the laminated nonwoven fabric has excellent air permeability. On the other hand, by setting the average fiber diameter to be 8 μm or less, the voids between fibers are reduced, and the dust collection efficiency is improved, so that it is excellent in dust resistance when a laminated nonwoven fabric is used as a protective clothing.
關於駐極體不織布（B）的單位面積重量，只要考慮到製成積層不織布並製成防護服時所需的性能來適宜選定即可，較佳為10 g/m2 以上且30 g/m2 以下。藉由將駐極體不織布的單位面積重量設為10 g/m2 以上而成為捕集灰塵、塵土等異物的性能優異的防護服。另一方面，藉由將上限設為30 g/m2 以下而成為透氣性優異的防護服。The weight per unit area of the electret nonwoven fabric (B) may be appropriately selected in consideration of the performance required when a laminated nonwoven fabric is formed into a protective clothing, and it is preferably 10 g/m 2 or more and 30 g/m 2 the following. By setting the basis weight of the electret nonwoven fabric to 10 g/m 2 or more, it becomes a protective clothing excellent in performance of collecting foreign matters such as dust and dust. On the other hand, by setting the upper limit to 30 g/m 2 or less, it becomes a protective suit excellent in air permeability.
關於對熔噴不織布進行駐極體化的方法，可使用公知的方法。例如一邊使熔噴不織布浸漬（或接觸）於水中，一邊自不織布的厚度方向下表面吸引水。藉由所述處理，自不織布的厚度方向上表面向下表面於不織布內貫通水，並使本不織布乾燥，藉此可獲得駐極體不織布。As the method of electretizing the melt-blown nonwoven fabric, a known method can be used. For example, while immersing (or contacting) the meltblown nonwoven fabric in water, water is attracted from the lower surface in the thickness direction of the nonwoven fabric. By the above treatment, water permeates the non-woven fabric from the upper surface in the thickness direction of the non-woven fabric to the lower surface, and the non-woven fabric is dried, whereby an electret non-woven fabric can be obtained.
＜不織布（C）：紡黏不織布＞ 對不織布（C）進行說明。不織布（C）為紡黏不織布，於製成積層不織布的情況下位於第二最外層，於製成防護服的情況下是構成內側的面的層，是顯現機械特性的層。<Non-woven fabric (C): Spunbond non-woven fabric> The nonwoven fabric (C) will be described. The non-woven fabric (C) is a spunbond non-woven fabric, and is located in the second outermost layer when it is used as a laminated non-woven fabric, and is a layer that constitutes an inner surface when it is used as a protective clothing, and is a layer that exhibits mechanical properties.
所謂紡黏不織布，是指將熔融的樹脂原料自紡絲頭噴出且於形成纖維網後進行熱壓花加工且進行不織布化而成的長纖維不織布，與所述熱黏合不織布、熔噴不織布相比，具有拉伸強度、撕裂強度等機械特性優異的特徵。於本發明的情況下，於使用具有紡黏不織布的積層不織布的防護服中，機械特性優異，且為構成本發明的防護服的內側的面（與肌膚接觸的面）的層，因此較佳為手感、肌膚觸感亦優異者。The so-called spunbond non-woven fabric refers to a long-fiber non-woven fabric formed by spraying the molten resin raw material from a spinning head and forming a fiber web by thermal embossing and non-woven fabric. It is characterized by excellent mechanical properties such as tensile strength and tear strength. In the case of the present invention, in the protective clothing using the laminated nonwoven fabric having the spunbond nonwoven fabric, it is excellent in mechanical properties, and is a layer constituting the inner surface (surface in contact with the skin) of the protective clothing of the present invention, so it is preferable It is also excellent in hand and skin touch.
構成紡黏不織布的纖維的樹脂成分可列舉聚乙烯、聚丙烯等聚烯烴系樹脂、聚對苯二甲酸乙二酯、聚乳酸等聚酯系樹脂、尼龍樹脂，含有一種或兩種以上包含該些樹脂的纖維。該些樹脂中，就易紡絲性、成本等生產性、以及製成防護服時的手感、肌膚觸感等觀點而言，較佳為聚丙烯。The resin components constituting the fibers of the spunbond nonwoven fabric include polyolefin-based resins such as polyethylene and polypropylene, polyester-based resins such as polyethylene terephthalate and polylactic acid, and nylon resins. some resinous fibers. Among these resins, polypropylene is preferred from the viewpoints of easy spinnability and productivity such as cost, as well as the texture and skin feel when used in protective clothing.
其次，構成紡黏不織布的纖維的平均纖維徑較佳為18 μm以上且30 μm以下，進而佳為20 μm以上且25 μm以下。藉由將平均纖維徑設為18 μm以上，可確保纖維間的空隙，紡黏不織布的透氣性優異，因此於製成積層不織布並製成防護服時透氣性優異。另外，製成防護服時的機械特性亦優異。另一方面，藉由將平均纖維徑設為30 μm以下，紡黏不織布的柔軟性優異，因此於製成積層不織布並製成防護服時手感、肌膚觸感優異。Next, the average fiber diameter of the fibers constituting the spunbond nonwoven fabric is preferably 18 μm or more and 30 μm or less, and more preferably 20 μm or more and 25 μm or less. By setting the average fiber diameter to be 18 μm or more, voids between fibers can be ensured, and the spunbond nonwoven fabric has excellent air permeability, so it is excellent in air permeability when it is made into a laminated nonwoven fabric and made into protective clothing. In addition, the mechanical properties when made into protective clothing are also excellent. On the other hand, when the average fiber diameter is 30 μm or less, the softness of the spunbond nonwoven fabric is excellent, and therefore, when it is used as a laminated nonwoven fabric and it is used as a protective clothing, it is excellent in feel and touch.
關於紡黏不織布的單位面積重量，只要考慮使用具備紡黏不織布的積層不織布的防護服所需的性能來適宜選定即可，較佳為10 g/m2 以上且30 g/m2 以下。藉由將紡黏不織布的單位面積重量設為10 g/m2 以上，於製成防護服時所需的機械特性優異。另一方面，藉由將上限設為30 g/m2 以下，於製成防護服時手感優異。The basis weight of the spunbond nonwoven fabric may be appropriately selected in consideration of the performance required to use a protective clothing including a laminated nonwoven fabric of the spunbond nonwoven fabric, and is preferably 10 g/m 2 or more and 30 g/m 2 or less. By setting the basis weight of the spunbond nonwoven fabric to be 10 g/m 2 or more, it is excellent in mechanical properties required when making protective clothing. On the other hand, by setting the upper limit to be 30 g/m 2 or less, it is excellent in feel when used as a protective suit.
＜積層不織布＞ 對本發明的積層不織布進行說明。本發明的積層不織布是至少依次積層包含芯鞘型複合短纖維的熱黏合不織布（不織布（A））、駐極體化的熔噴不織布（駐極體不織布（B））、紡黏不織布（不織布（C））而成者。＜Laminated non-woven fabric＞ The laminated nonwoven fabric of the present invention will be described. The laminated non-woven fabric of the present invention is a thermally bonded non-woven fabric (non-woven fabric (A)) comprising core-sheath type composite short fibers, an electretized melt-blown non-woven fabric (electret non-woven fabric (B)), and a spun-bonded non-woven fabric (non-woven fabric) at least sequentially laminated. (C)) is the result.
就本發明的防護服的柔軟性更優異、透氣性亦更優異的觀點而言，較佳為所述積層不織布所具備的任意的層間亦利用熱熔系接著劑貼合。所述熱熔系接著劑可使用合成橡膠系、烯烴、乙烯乙酸乙烯酯樹脂等熱塑性樹脂系等熱熔系接著劑，較佳為接著力高、與不織布的親和性優異的合成橡膠系的熱熔系接著劑。From the viewpoint of the protective clothing of the present invention having better flexibility and better air permeability, it is preferable that any interlayers included in the laminated nonwoven fabric are also bonded with a hot-melt adhesive. The hot-melt adhesive can be a hot-melt adhesive such as synthetic rubber, olefin, thermoplastic resin such as ethylene vinyl acetate resin, etc., and is preferably a synthetic rubber-based thermal adhesive with high adhesive force and excellent affinity with nonwoven fabrics. Fusion adhesive.
另外，就將各層間均勻地接著的觀點而言，各層間的熱熔系接著劑的含量較佳為0.5 g/m2 以上，進而佳為1.0 g/m2 以上。另一方面，就獲得透氣性優異的積層不織布的觀點而言，上限較佳為2.0 g/m2 以下，進而佳為1.5 g/m2 以下。進而，藉由將熱熔系接著劑的含量設為所述範圍內，可較佳地用於滅菌服。於附著於防護服的內側面（不織布（C））的汗透過不織布的各層間時，於熱熔系接著劑中傳遞而向外部流出，因此藉由將熱熔接著劑的含量設為所述範圍，於維持接著力的基礎上汗中的細菌難以向外部流出。In addition, from the viewpoint of uniformly adhering the layers, the content of the hot-melt adhesive between the layers is preferably 0.5 g/m 2 or more, and more preferably 1.0 g/m 2 or more. On the other hand, from the viewpoint of obtaining a laminated nonwoven fabric excellent in air permeability, the upper limit is preferably 2.0 g/m 2 or less, and more preferably 1.5 g/m 2 or less. Furthermore, by making content of a hot-melt adhesive agent into the said range, it can be used suitably for sterilization clothing. When the sweat adhered to the inner side of the protective clothing (non-woven fabric (C)) passes through the layers of the non-woven fabric, it is transferred in the hot-melt adhesive and flows out to the outside. Therefore, the content of the hot-melt adhesive is set to the above. It is difficult for the bacteria in the sweat to flow out to the outside while maintaining the adhesive force.
其次，對積層不織布的單位面積重量進行說明。就使防護服的透氣性更優異、進而防塵性亦更優異的觀點而言，積層不織布的單位面積重量較佳為30 g/m2 以上，進而佳為50 g/m2 以上。另一方面，上限較佳為100 g/m2 以下，進而佳為80 g/m2 以下。只要除了所需的透氣性、防塵性以外考慮製成防護服時的穿著舒適度等來適宜選定各不織布層的單位面積重量即可。Next, the basis weight of the laminated nonwoven fabric will be described. The basis weight of the laminated nonwoven fabric is preferably 30 g/m 2 or more, more preferably 50 g/m 2 or more, from the viewpoint of making the protective clothing more excellent in air permeability and furthermore excellent in dust resistance. On the other hand, the upper limit is preferably 100 g/m 2 or less, and more preferably 80 g/m 2 or less. The basis weight of each non-woven fabric layer may be appropriately selected in consideration of the wearing comfort when used as a protective suit in addition to the required air permeability and dust resistance.
另外，積層不織布的透氣度較佳為50 cm3 /cm2 /sec以上。藉由積層不織布的透氣度為所述範圍內，包含所述積層不織布的防護服的透氣性優異。就所述觀點而言，積層不織布的透氣度更佳為80 cm3 /cm2 /sec以上。In addition, the air permeability of the laminated nonwoven fabric is preferably 50 cm 3 /cm 2 /sec or more. When the air permeability of the laminated nonwoven fabric is within the above range, the protective clothing including the laminated nonwoven fabric is excellent in air permeability. From this viewpoint, the air permeability of the laminated nonwoven fabric is more preferably 80 cm 3 /cm 2 /sec or more.
所述透氣度設為藉由JIS L1913：2010 弗雷澤法（Frazier method）測定而得的值。The air permeability is a value measured by JIS L1913:2010 Frazier method.
進而，本發明的積層不織布可於不阻礙發明效果的範圍內含有其他不織布層。例如，亦可於駐極體不織布（B）與不織布（C）之間包含將紡黏不織布等駐極體化而成者。Furthermore, the laminated nonwoven fabric of the present invention may contain other nonwoven fabric layers within a range that does not inhibit the effects of the present invention. For example, between the electret nonwoven fabric (B) and the nonwoven fabric (C), a spunbond nonwoven fabric or the like may be electretized.
＜防護服的製造方法＞ 其次，對本發明的防護服的製造方法進行說明。＜Manufacturing method of protective clothing＞ Next, the manufacturing method of the protective clothing of this invention is demonstrated.
即，所述防護服的製造方法依次包括：對包含芯鞘型複合短纖維的網實施壓延加工而獲得熱黏合不織布的步驟；積層所述熱黏合不織布、熔噴不織布及紡黏不織布而獲得積層不織布的步驟；以及縫製所述積層不織布而獲得防護服的步驟。That is, the manufacturing method of the protective clothing sequentially includes the steps of: calendering a web comprising core-sheath composite staple fibers to obtain a thermally bonded nonwoven; the step of non-woven fabric; and the step of sewing the laminated non-woven fabric to obtain protective clothing.
於使用藉由所述方法獲得的積層不織布的本發明的防護服中，僅對構成防護服的外側的面的不織布（A）實施壓延加工。因此，不織布（A）的表面的平滑性高，因此防護服的外側的面的平滑性亦變高，可抑制灰塵、塵土等異物附著於防護服的外側的面。另一方面，可避免對駐極體不織布（B）及不織布（C）實施壓延加工。駐極體不織布（B）及不織布（C）藉由實施壓延加工，柔軟性降低且手感亦降低，因此藉由避免對該些不織布實施壓延加工，作為積層不織布整體，柔軟性亦優異且手感亦優異。而且，使用所述積層不織布的防護服的柔軟性優異且手感亦優異。In the protective clothing of the present invention using the laminated nonwoven fabric obtained by the above method, only the nonwoven fabric (A) constituting the outer surface of the protective clothing is subjected to a calendering process. Therefore, since the smoothness of the surface of the nonwoven fabric (A) is high, the smoothness of the outer surface of the protective clothing is also high, and foreign matter such as dust and dust can be prevented from adhering to the outer surface of the protective clothing. On the other hand, rolling processing of the electret nonwoven fabric (B) and the nonwoven fabric (C) can be avoided. Electret non-woven fabrics (B) and non-woven fabrics (C) are subjected to calendering, so that the softness is reduced and the hand feeling is also lowered. Therefore, by avoiding the calendering of these non-woven fabrics, as a laminated non-woven fabric as a whole, the flexibility is also excellent and the hand is also good. Excellent. Furthermore, the protective clothing using the laminated nonwoven fabric is excellent in softness and hand feeling.
另外，壓延加工的溫度較佳為構成芯鞘型複合短纖維的鞘部的樹脂的熔點以上且比所述熔點高30℃的溫度以下，壓延加工的負荷較佳為以線壓計為100 N/cm～2000 N/cm。進而佳為壓延加工的負荷以線壓計為300 N/cm～500 N/cm。藉由將壓延加工的條件設為所述範圍內，可不會對作為不織布（A）的熱黏合不織布賦予過剩的熱歷程而使構成熱黏合不織布的纖維彼此熔接。藉此，可獲得柔軟性或手感優異且平滑性亦優異的熱黏合不織布。其次，如上所述使用熱熔接著劑等將利用壓延加工而獲得的熱黏合不織布、熔噴不織布、紡黏不織布貼合，藉此可獲得積層不織布。In addition, the temperature of the calendering process is preferably equal to or higher than the melting point of the resin constituting the sheath portion of the core-sheath type composite short fibers and 30°C higher than the melting point, and the load of the calendering process is preferably 100 N in linear pressure. /cm～2000N/cm. Furthermore, it is preferable that the load of a rolling process is 300 N/cm - 500 N/cm in linear pressure. By setting the conditions of the calendering process within the above-mentioned range, the fibers constituting the thermally-bonded nonwoven fabric can be fused to each other without imparting an excessive thermal history to the thermally-bonded nonwoven fabric as the nonwoven fabric (A). Thereby, it is possible to obtain a thermally bonded nonwoven fabric which is excellent in softness and texture, and which is also excellent in smoothness. Next, a laminated nonwoven fabric can be obtained by laminating the thermally bonded nonwoven fabric, meltblown nonwoven fabric, and spunbond nonwoven fabric obtained by the calendering process using a hot melt adhesive or the like as described above.
另外，於縫製所述積層不織布而獲得防護服的步驟中，藉由縫製裁剪成與通常製造的防護服對應的形狀的積層不織布而獲得防護服。此時，以作為所述積層不織布的第二最外層的不織布（C）的層構成所述防護服的內側的面的方式進行縫製。而且，於縫製積層不織布時，可採用線縫製或超音波縫製等縫製方法。藉此，防護服具有縫製部。In addition, in the step of sewing the laminated nonwoven fabric to obtain the protective clothing, the protective clothing is obtained by sewing the laminated nonwoven fabric cut into a shape corresponding to a commonly produced protective clothing. At this time, sewing is performed so that the layer of the nonwoven fabric (C), which is the second outermost layer of the laminated nonwoven fabric, constitutes the inner surface of the protective suit. Furthermore, when sewing the laminated nonwoven fabric, a sewing method such as thread sewing or ultrasonic sewing can be used. Thereby, the protective suit has a sewn part.
＜防護服＞ 本發明的防護服可為連接型、分離型等任意形狀，就容易穿脫的觀點而言，較佳為分離型。＜Protective clothing＞ The protective clothing of the present invention may be in any shape, such as a connected type or a separate type, and is preferably a separate type from the viewpoint of being easy to put on and take off.
另外，本發明的防護服中，所述積層不織布的第一面構成本發明的防護服的外側的面。即，構成本發明的防護服的外側的面的不織布是所述熱黏合不織布。而且，藉由所述結構，可將本發明的防護服的外側的面的利用KES法測定的表面粗糙度（SMD值）設為3.0以下，進而將所述面的摩擦係數（MIU值）設為0.15以下。表面粗糙度（SMD值）及摩擦係數是將由KES-FB4規定的工匠或專家進行的撫摸布料表面的手的動作獲得的手感「膨潤」「光滑」「堅挺（crispness）」數值化的評價指數。具體的測定可利用能夠實現按照所述規定的測定的表面試驗機等（例如加藤科技（Katotech）股份有限公司KES-FB4-A-AUTO-A）進行測定。In addition, in the protective clothing of the present invention, the first surface of the laminated nonwoven fabric constitutes an outer surface of the protective clothing of the present invention. That is, the nonwoven fabric constituting the outer surface of the protective suit of the present invention is the thermally bonded nonwoven fabric. Furthermore, with the above configuration, the surface roughness (SMD value) of the outer surface of the protective clothing of the present invention measured by the KES method can be set to 3.0 or less, and the friction coefficient (MIU value) of the surface can be set to is 0.15 or less. Surface roughness (SMD value) and coefficient of friction are evaluation indices that quantify the texture "swelling", "smooth", and "crispness" obtained by the action of a craftsman or an expert who touches the surface of the cloth by the action of a craftsman or an expert specified by KES-FB4. A specific measurement can be performed using a surface tester or the like (for example, Katotech Co., Ltd. KES-FB4-A-AUTO-A) that can realize the measurement according to the above-mentioned regulations.
此處，藉由使防護服的外側的面的SMD值及MIU值均為所述範圍內，可抑制灰塵等異物附著於防護服的外側的面，且容易將附著於防護服的外側的面的灰塵等異物自防護服去除。此處，SMD值是防護服的外側的面的表面凹凸程度的指標（越小越平滑），MIU值是防護服的外側的面的滑動容易程度的指標（越小越容易滑動），因此藉由SMD值與MIU值為所述範圍內，可抑制灰塵等異物附著於防護服的外側的面且附著於防護服的外側的面的灰塵等異物容易脫落，結果容易將異物自防護服去除。就所述觀點而言，SMD值較佳為3.0以下，更佳為2.0以下。另外，就所述觀點而言，MIU值較佳為0.15以下，更佳為0.10以下。再者，SMD值及MIU值均設為構成防護服的布料（積層不織布）的縱向測定值及所述布料的橫向測定值的平均。Here, by making the SMD value and the MIU value of the outer surface of the protective clothing both within the above-mentioned ranges, it is possible to prevent foreign matter such as dust from adhering to the outer surface of the protective clothing, and to easily adhere to the outer surface of the protective clothing. Remove dust and other foreign objects from the protective clothing. Here, the SMD value is an index of the degree of surface irregularities of the outer surface of the protective clothing (smaller is the smoother), and the MIU value is an index of the ease of sliding of the outer surface of the protective clothing (the smaller it is, the easier it is to slide). When the SMD value and the MIU value are within the above-mentioned ranges, foreign matter such as dust can be prevented from adhering to the outer surface of the protective suit, and foreign matter such as dust attached to the outer surface of the protective suit can be easily detached, and as a result, the foreign matter can be easily removed from the protective clothing. From this viewpoint, the SMD value is preferably 3.0 or less, more preferably 2.0 or less. In addition, from this viewpoint, the MIU value is preferably 0.15 or less, more preferably 0.10 or less. In addition, both the SMD value and the MIU value were set as the average of the longitudinal measurement value of the fabric (laminated nonwoven fabric) constituting the protective suit and the transverse measurement value of the fabric.
另外，本發明的防護服中，防護服的外側的面的水接觸角較佳為80°以上，更佳為100°以上。另外，為了使防護服的外側的面的水接觸角為所述較佳的範圍內，構成所述熱黏合不織布的芯鞘型複合短纖維的表面較佳為不具有親水基。藉由防護服的外側的面的水接觸角為80°以上，除了可抑制污垢自防護服的外部滲透至內部以外，對於在再生醫療的培養設施或醫藥品的製造現場的潔淨室內使用的滅菌服而言亦成為較佳者。對於該些用途中使用的滅菌服，需要作業者的汗中所含的細菌不透過滅菌服而流出至外部。此處，汗中所含的細菌自滅菌服內部向外部流出的過程中，作業者發出的汗會附著於皮膚上或者自內衣附著於防護服的內側的面（本發明中為不織布（C））。之後，推定由於藉由作業者就座產生的壓力，自防護服的內側面到達中間層（本發明中為駐極體不織布（B））、作為外側的面的不織布（A）而向外部流出。因此，於作為外側的面的不織布（A）具有親水性的情況下，親水基會產生拖拽汗的力，有汗容易向外部流出且汗中所含的細菌亦容易向外部流出的傾向。因此，藉由將水接觸角設為80°以上並製成不具有親水基的不織布（A），可製成汗難以向外部流出的防護服。再者，水接觸角是於將使液滴與固體表面接觸並滴落後與試樣面所成的角度設為接觸角θ時，藉由一般稱為θ/2法-半角法（A half-angle Method）-的方法測定而得的值。具體的測定可利用接觸角計「德普邁斯特（DropMaster）DMs-400（協和界面科學股份有限公司製造）」進行測定。In addition, in the protective clothing of the present invention, the water contact angle of the outer surface of the protective clothing is preferably 80° or more, more preferably 100° or more. In addition, in order to keep the water contact angle of the outer surface of the protective clothing within the above-mentioned preferred range, the surface of the core-sheath type composite staple fibers constituting the thermally bonded nonwoven preferably does not have a hydrophilic group. Since the water contact angle of the outer surface of the protective suit is 80° or more, in addition to suppressing the penetration of dirt from the outside of the protective suit to the inside, it can be used for sterilization in a regenerative medical culture facility or a clean room at a pharmaceutical manufacturing site. It also becomes the better one in terms of service. In the sterilization clothing used for these applications, it is necessary that bacteria contained in the sweat of the operator do not flow out to the outside through the sterilization clothing. Here, in the process that the bacteria contained in the sweat flow out from the inside of the sterilization suit to the outside, the sweat emitted by the operator adheres to the skin or from the underwear to the inner surface of the protective suit (nonwoven fabric (C) in the present invention) ). After that, it is presumed that the pressure generated by the operator's sitting will flow from the inner surface of the protective suit to the intermediate layer (the electret nonwoven fabric (B) in the present invention) and the nonwoven fabric (A) that is the outer surface and flow out to the outside. . Therefore, when the nonwoven fabric (A) serving as the outer surface has hydrophilicity, the hydrophilic group generates a force to drag sweat, and the sweat tends to flow out easily and the bacteria contained in the sweat tend to flow out to the outside. Therefore, by setting the water contact angle to 80° or more and making the nonwoven fabric (A) having no hydrophilic group, it is possible to make a protective suit in which sweat hardly flows out to the outside. Furthermore, the water contact angle is defined as the contact angle θ when the droplet is brought into contact with the solid surface and the angle formed by the droplet and the sample surface is determined by the method commonly known as the θ/2 method-half-angle method (A half-angle). angle Method) - the value determined by the method. The specific measurement can be performed using a contact angle meter "DropMaster DMs-400 (manufactured by Kyowa Interface Science Co., Ltd.)."
另外，本發明的防護服中，所述積層不織布的第二面構成本發明的防護服的內側的面。即，構成本發明的防護服的內側的面的不織布是所述紡黏不織布。而且，藉由所述結構，機械特性優異，且手感、肌膚觸感亦優異。In addition, in the protective clothing of the present invention, the second surface of the laminated nonwoven fabric constitutes an inner surface of the protective clothing of the present invention. That is, the nonwoven fabric constituting the inner surface of the protective suit of the present invention is the spunbond nonwoven fabric. Furthermore, with the above-mentioned structure, the mechanical properties are excellent, and the hand feeling and the feel on the skin are also excellent.
另外，於作為滅菌服使用時，較佳為利用具有氣體透過部的滅菌袋包裝，利用環氧乙烷氣體等滅菌氣體進行滅菌處理。另外，本發明的防護服除了線縫製部以外，還可具有藉由超音波縫製而形成的超音波縫製部。In addition, when using as a sterilization garment, it is preferable to pack in a sterilization bag having a gas permeable part, and to perform sterilization treatment with a sterilization gas such as ethylene oxide gas. In addition, the protective clothing of the present invention may have an ultrasonic sewing part formed by ultrasonic sewing in addition to the thread sewing part.
本發明的防護服是具有優異的防塵性與透氣性且不易附著灰塵、塵土等異物並容易去除附著的異物的防護服，可較佳地用於去除粉塵、化學物質（以下為污染物質）等的作業或處理作業或者再生醫療的培養設施或醫藥品的製造現場。 [實施例]The protective clothing of the present invention is a protective clothing that has excellent dust resistance and air permeability, is not easy to adhere to foreign matters such as dust and dust, and can easily remove the adhered foreign matters, and can be preferably used for removing dust, chemical substances (hereinafter referred to as pollutants), etc. operations or processing operations, cultivation facilities for regenerative medicine, or manufacturing sites for pharmaceuticals. [Example]
以下，使用實施例對本發明進行更具體的說明。再者，本實施例中所示的特性值的測定方法如下所述。另外，本發明中規定為縱向：與積層不織布輥的長度方向平行地採取的試驗體、橫向：與積層不織布輥的長度方向垂直地採取的試驗體。進而，於根據防護服的形態採取試驗體的情況下，自背部部位等具有較大面積的部位採取試驗體，規定為縱向：身高方向、橫向：與身高方向垂直的方向。Hereinafter, the present invention will be described in more detail using examples. In addition, the measuring method of the characteristic value shown in this Example is as follows. In the present invention, the longitudinal direction: a test body taken parallel to the longitudinal direction of the laminated nonwoven fabric roll, and the lateral direction: a test body taken perpendicular to the longitudinal direction of the laminated nonwoven fabric roll is defined. Furthermore, in the case of taking the test body according to the form of the protective clothing, the test body is taken from a part having a large area such as the back part, and is defined as vertical direction: height direction and horizontal direction: the direction perpendicular to the height direction.
A.單位面積重量 （1）測定方法 使用可以0.1%的精度測定使用沖裁模或模板及剃鬚刀刃採取的試驗體的質量的「秤」來進行測定。 （2）引用規格 JIS L1913:2010 （3）測定條件 ·尺寸：25 cm×25 cm ·n數：3。A. Weight per unit area (1) Measurement method The measurement is performed using a "scale" that can measure the mass of a test body taken with a die, a template, and a razor blade with an accuracy of 0.1%. (2) Reference specifications JIS L1913:2010 (3) Measurement conditions ·Size: 25cm×25cm Number of n: 3.
B.表面粗糙度（SMD值） （1）測定方法 使用自動手感測定裝置「KES-FB4-AUTO-A（加藤科技（Katotech）股份有限公司製造）」測定試驗體表面的表面粗糙度，將縱向/橫向的平均值設為表面粗糙度。 （2）引用規格 KES-FB4 （3）測定條件 ·標準加壓力：10 gf ·接觸器：直徑0.5 mm的鋼製線 ·接觸長度：5 mm ·移動速度：1 mm/sec ·拉伸張力：400 g ·n數：縱向3、橫向3。B. Surface roughness (SMD value) (1) Measurement method The surface roughness of the surface of the test object was measured using an automatic feel measuring apparatus "KES-FB4-AUTO-A (manufactured by Katotech)", and the average value of the vertical direction and the horizontal direction was used as the surface roughness. (2) Reference specifications KES-FB4 (3) Measurement conditions ·Standard pressure: 10 gf Contactor: 0.5 mm diameter steel wire Contact length: 5 mm Movement speed: 1 mm/sec · Tensile tension: 400 g Number of n: 3 vertically, 3 horizontally.
C.摩擦係數（MIU值） （1）測定方法 使用自動手感測定裝置「KES-FB4-AUTO-A（加藤科技（Katotech）股份有限公司製造）」測定試驗體表面的摩擦係數，將縱向/橫向的平均值設為摩擦係數。 （2）引用規格 KES-FB4 （3）測定條件 ·標準加壓力：50 gf ·接觸器：20根鋼琴線的波型表面形狀 ·接觸面積：1 cm2 （1 cm×1 cm） ·移動速度：1 mm/sec ·拉伸張力：400 g ·n數：縱向3、橫向3。C. Friction coefficient (MIU value) (1) Measurement method The friction coefficient of the surface of the test body was measured using an automatic feel measuring device "KES-FB4-AUTO-A (manufactured by Katotech Co., Ltd.)". The average value is set as the friction coefficient. (2) Reference specification KES-FB4 (3) Measurement conditions Standard pressing force: 50 gf Contactor: Waveform surface shape of 20 piano wires Contact area: 1 cm 2 (1 cm × 1 cm) Moving speed : 1 mm/sec. Tensile tension: 400 g. Number of n: 3 in the longitudinal direction and 3 in the transverse direction.
D.拉伸強度 （1）測定方法 使用「立體測圖儀（Autograph）AG-50KNG（島津製作所股份有限公司製造）」測定試驗體的拉伸強度。 （2）引用規格 JIS L1913:2010 （3）測定條件 ·尺寸：300 mm×50 mm ·夾持間隔：200 mm ·拉伸速度：100 mm/min ·n數：縱向5、橫向5。D. Tensile strength (1) Measurement method The tensile strength of the test body was measured using "Autograph AG-50KNG (manufactured by Shimadzu Corporation)". (2) Reference specifications JIS L1913:2010 (3) Measurement conditions Size: 300mm×50mm ·Clamping interval: 200 mm ·Drawing speed: 100 mm/min Number of n: 5 vertically and 5 horizontally.
E.撕裂強度 （1）測定方法 使用「立體測圖儀（Autograph）AG-50KNG（島津製作所股份有限公司製造）」測定使用模板採取的試驗體的撕裂強度。 （2）引用規格 JIS L1913:2010 C法（梯形法（trapezoid method）） （3）測定條件 ·尺寸：150 mm×75 mm ·夾持間隔：25 mm ·拉伸速度：100 mm/min ·n數：縱向5、橫向5。E. Tear Strength (1) Measurement method The tear strength of the test body taken using the template was measured using "Autograph AG-50KNG (manufactured by Shimadzu Corporation)". (2) Reference specifications JIS L1913:2010 Method C (trapezoid method) (3) Measurement conditions Size: 150mm×75mm ·Clamping interval: 25 mm ·Drawing speed: 100 mm/min Number of n: 5 vertically and 5 horizontally.
F.透氣度 （1）測定方法 使用「FX3300（高山鋼筘（Takayama Reed）股份有限公司製造）」測定試驗體的透氣度。 （2）引用規格 JIS L1913:2010 弗雷澤法 （3）測定條件 ·尺寸：150 mm×150 mm ·n數：3。F. Air permeability (1) Measurement method The air permeability of the test body was measured using "FX3300 (manufactured by Takayama Reed Co., Ltd.)". (2) Reference specifications JIS L1913:2010 Fraser Law (3) Measurement conditions Size: 150mm×150mm Number of n: 3.
G.捕集效率 （1）測定裝置/方法 ＜測定裝置＞ 本發明的捕集效率測定中使用的捕集性能測定裝置是於固定試驗體的樣品支架的上游側連結塵埃收納箱且於下游側連結流量計、流量調整閥、鼓風機的結構，進而於樣品支架使用粒子計數器（理音（Rion）公司製造：KC-01E），可經由切換旋塞分別測定試驗體的上游側的塵埃個數與下游側的塵埃個數。另外，樣品支架包括壓力計，可測量試驗體的上游、下游的靜壓差。G. Capture Efficiency (1) Measuring device/method <Measuring device> The collection performance measuring device used in the collection efficiency measurement of the present invention has a configuration in which a dust storage box is connected to the upstream side of a sample holder to which a test body is fixed, and a flowmeter, a flow rate adjustment valve, and a blower are connected to the downstream side, and the sample holder is further connected to the sample holder. Using a particle counter (KC-01E, manufactured by Rion), the number of dusts on the upstream side and the number of dusts on the downstream side of the test body can be measured respectively by switching the cock. In addition, the sample holder includes a pressure gauge that can measure the difference in static pressure upstream and downstream of the test body.
＜測定方法＞ 將直徑0.3 μm的聚苯乙烯標準膠乳粉（latex powder）（利用蒸餾水將半井特斯科（Nacalai Tesque）公司製造的0.309U聚苯乙烯10質量%溶液稀釋200倍）填充至塵埃收納箱中，於調整風量後（並穩定30 s），利用粒子計數器對每個試驗體測定三次試驗體上游的塵埃個數D、下游的塵埃個數d，於算出平均值後，藉由下式算出捕集效率。再者，表1中記載的值是直徑0.3 μm～0.5 μm的聚苯乙烯粒子的捕集效率。 捕集效率（%）=（1-（d/D））×100 （2）測定條件 ·風量：1 m/min ·塵埃濃度：1萬個～4萬個/2.83×10-4 m3 （0.01 ft3 ） ·n數：10。<Measuring method> A 0.3 μm diameter polystyrene standard latex powder (a 0.309U polystyrene 10 mass % solution made by Nacalai Tesque was diluted 200 times with distilled water) was filled into dust. In the storage box, after adjusting the air volume (and stabilized for 30 s), use the particle counter to measure the number of dusts D upstream of the test object and the number of dusts d downstream of the test object three times for each test object. Formula to calculate the collection efficiency. In addition, the value described in Table 1 is the collection efficiency of the polystyrene particle of diameter 0.3 micrometer - 0.5 micrometer. Collection efficiency (%)=(1-(d/D))×100 (2) Measurement conditions Air volume: 1 m/min Dust concentration: 10,000 to 40,000 particles/2.83×10 -4 m 3 ( 0.01 ft 3 ) Number of n: 10.
H.水接觸角 （1）測定方法 使用接觸角計「德普邁斯特（DropMaster）DMs-400（協和界面科學股份有限公司製造）」並利用液滴法測定試驗體表面的水接觸角。 （2）測定條件 ·試驗液：蒸餾水、2 μL ·測定時期：於滴加試驗液後5000 mS ·解析法：θ/2法 ·n數：10。H. Water Contact Angle (1) Measurement method The contact angle of water on the surface of the test body was measured by the drop method using a contact angle meter "DropMaster DMs-400 (manufactured by Kyowa Interface Science Co., Ltd.)." (2) Measurement conditions Test solution: distilled water, 2 μL Measurement period: 5000 mS after dropping the test solution ·Analytical method: θ/2 method Number of n: 10.
I.聚苯乙烯粒子透過性
（1）測定方法
依次載置玻璃板（A）（5 cm見方×3 mm厚）、試驗體（7 cm見方，外側面向下）、「埃利斯慕（Airism）（註冊商標）」（6 cm見方，外側面向下：優衣庫（uniqlo）公司製造：2020年模型），於「埃利斯慕（Airism）（註冊商標）」上（中心部）滴加含有聚苯乙烯粒子的人工汗170 μL（詳情後述）後，進而於埃利斯慕（Airism）上放置玻璃板（B）（5 cm見方×3 mm厚），於獲得試驗片後，於與試驗片的面方向垂直的方向上對所述試驗片施加負荷（2200 g）並放置1小時。於1 h後，利用「雷射顯微鏡VK-110（基恩士（KEYENCE）股份有限公司製造）」觀察玻璃板（A）的表面，對透過的聚苯乙烯的視野數進行計數。
（2）測定條件
·人工汗：含2.5 wt%-0.3 μm聚苯乙烯粒子的水溶液
※0.3 μm聚苯乙烯粒子假定為汗中的細菌。
·觀察部位：圖1是關於聚苯乙烯粒子透過性測定的觀察視野的概念圖，如所述圖1所示，於連接試驗片1的第一邊A的中間點與第三邊C的中間點的線上、以及連接第二邊B的中間點與第四邊D的中間點的線上設為觀察部位2（設為143 μm×107 μm/1視野，觀察650視野）。
·倍率：2000倍
（3）判定基準
基於可確認聚苯乙烯粒子的透過的視野數，以A～C進行判定。I. Polystyrene particle permeability
(1) Measurement method
Place the glass plate (A) (5 cm square x 3 mm thick), the test body (7 cm square, the outer side facing down), and "Airism (registered trademark)" (6 cm square, the outer side facing down) in this order. Bottom: manufactured by Uniqlo: 2020 model), after dripping 170 μL of artificial sweat containing polystyrene particles (details will be described later) on “Airism (registered trademark)” (center part) , and then place a glass plate (B) (5 cm square × 3 mm thick) on an Airism, and after obtaining a test piece, apply the test piece to the test piece in a direction perpendicular to the surface direction of the test piece. Load (2200 g) and leave for 1 hour. After 1 hour, the surface of the glass plate (A) was observed with a "laser microscope VK-110 (manufactured by KEYENCE)", and the number of fields of view of the transmitted polystyrene was counted.
(2) Measurement conditions
Artificial sweat: an aqueous solution containing 2.5 wt%-0.3 μm polystyrene particles
※0.3 μm polystyrene particles are assumed to be bacteria in sweat.
Observation part: FIG. 1 is a conceptual diagram of the observation field of view for the measurement of the permeability of polystyrene particles, as shown in FIG. 1 , at the middle point connecting the first side A and the third side C of the
A判定：0～10視野 B判定：11～50視野 C判定：51視野以上。A judgment: 0 to 10 field of view Judgment B: 11-50 field of view Judgment C: 51 visual fields or more.
[實施例1] ＜不織布（A）＞ 對構成芯部的樹脂包含聚丙烯（熔點168℃）、構成鞘部的樹脂包含聚乙烯（熔點130℃）的芯鞘型複合短纖維（平均纖維徑：2.2 dtex、纖維長度：35 mm、適用親水性油劑）進行梳理，於形成纖維網後，於150℃的溫度、線壓300 N/cm下進行壓延加工，獲得單位面積重量為15 g/m2 的不織布（A）。再者，所述不織布（A）為熱黏合不織布。[Example 1] <Non-woven fabric (A)> Core-sheath type composite short fibers (average fiber diameter) in which the resin constituting the core portion contains polypropylene (melting point: 168° C.) and the resin constituting the sheath portion contains polyethylene (melting point: 130° C.). : 2.2 dtex, fiber length: 35 mm, suitable for hydrophilic oil) for carding, after forming a fiber web, calendering at a temperature of 150 ° C and a linear pressure of 300 N/cm to obtain a weight per unit area of 15 g/cm m 2 non-woven fabric (A). Furthermore, the non-woven fabric (A) is a thermally bonded non-woven fabric.
＜駐極體不織布（B）＞ 使用了包含平均纖維徑為6 μm的聚丙烯樹脂的纖維的駐極體不織布（B）。再者，所述駐極體不織布（B）是單位面積重量為15 g/m2 的帶電熔噴不織布。<Electret Nonwoven Fabric (B)> An electret nonwoven fabric (B) using fibers containing polypropylene resin having an average fiber diameter of 6 μm was used. Furthermore, the electret nonwoven fabric (B) is a charged meltblown nonwoven fabric with a weight per unit area of 15 g/m 2 .
＜不織布（C）＞ 使用了包含平均纖維徑為24 μm的聚丙烯樹脂的纖維的不織布（C）。再者，所述不織布（C）是單位面積重量為20 g/m2 的紡黏不織布。<Non-woven fabric (C)> A non-woven fabric (C) containing fibers of polypropylene resin having an average fiber diameter of 24 μm was used. In addition, the said nonwoven fabric (C) is a spunbond nonwoven fabric whose basis weight is 20 g/m< 2 >.
＜積層不織布/防護服＞ 使用熱熔系接著劑「松村石油熔體（Moresco Melt）TN-370Z（松村石油（MORESCO）股份有限公司製造）」貼合所述不織布（A）、駐極體不織布（B）、不織布（C），獲得包含不織布（A）、駐極體不織布（B）、不織布（C）的積層不織布。再者，各層間的接著劑的含量為1.5 g/m2 ，積層不織布的單位面積重量為53 g/m2 。進而，以不織布（A）構成外側的面、不織布（C）構成內側的面的方式對本積層不織布進行線縫製，獲得上衣及下衣分離的分離型的防護服。再者，縫製及評價的環境是於國際標準化組織（International Standardization Organization，ISO）級8的潔淨室環境下實施。<Laminated non-woven fabric/protective clothing> The above-mentioned non-woven fabric (A) and electret non-woven fabric are laminated using hot-melt adhesive "Moresco Melt TN-370Z (manufactured by MORESCO Co., Ltd.)" (B) and non-woven fabric (C) to obtain a laminated non-woven fabric including non-woven fabric (A), electret non-woven fabric (B), and non-woven fabric (C). In addition, the content of the adhesive between the layers was 1.5 g/m 2 , and the basis weight of the laminated nonwoven fabric was 53 g/m 2 . Furthermore, the present laminated nonwoven fabric was thread-sewn so that the nonwoven fabric (A) constituted the outer surface and the nonwoven fabric (C) constituted the inner surface to obtain a separate protective suit in which the upper and lower garments were separated. In addition, the environment of sewing and evaluation was implemented in the clean room environment of International Standardization Organization (ISO) class 8.
[實施例2] 除了將不織布（A）的單位面積重量變更為20 g/m2 以外，利用與實施例1相同的方法獲得單位面積重量為58 g/m2 的積層不織布及分離型的防護服。[Example 2] A laminated nonwoven fabric with a basis weight of 58 g/m 2 and a separable guard were obtained in the same manner as in Example 1, except that the basis weight of the nonwoven fabric (A) was changed to 20 g/m 2 . Clothes.
[實施例3] 除了將不織布（A）的單位面積重量變更為25 g/m2 以外，利用與實施例1相同的方法獲得單位面積重量為63 g/m2 的積層不織布及分離型的防護服。[Example 3] A laminated nonwoven fabric with a basis weight of 63 g/m 2 and a separable guard were obtained in the same manner as in Example 1, except that the basis weight of the nonwoven fabric (A) was changed to 25 g/m 2 . Clothes.
[實施例4] 除了將構成不織布（A）的芯鞘型複合短纖維的芯部的樹脂變更為聚酯（聚對苯二甲酸乙二酯，熔點260℃）以外，利用與實施例3相同的方法獲得單位面積重量為63 g/m2 的積層不織布及分離型的防護服。[Example 4] The same procedure as in Example 3 was used except that the resin constituting the core of the core-sheath type composite staple fiber of the nonwoven fabric (A) was changed to polyester (polyethylene terephthalate, melting point: 260°C). The method obtained the laminated non-woven fabric and the separation type protective clothing with a unit area weight of 63 g/m 2 .
[實施例5] 除了於不織布（A）的芯鞘型複合短纖維中適用疏水性油劑代替親水性油劑以外，利用與實施例2相同的方法獲得單位面積重量為58 g/m2 的積層不織布及分離型的防護服。[Example 5] The same method as in Example 2 was used to obtain a 58 g/m Laminated non-woven and separable protective clothing.
[實施例6] 除了將熱熔系接著劑的量變更為1.0 g/m2 以外，利用與實施例5相同的方法獲得單位面積重量為57 g/m2 的積層不織布及分離型的防護服。[Example 6] The same method as in Example 5 was used, except that the amount of the hot-melt adhesive was changed to 1.0 g/m 2 , to obtain a laminated nonwoven fabric with a basis weight of 57 g/m 2 and a separable protective suit .
[實施例7] 除了將熱熔系接著劑的量變更為2.0 g/m2 以外，利用與實施例5相同的方法獲得單位面積重量為59 g/m2 的積層不織布及分離型的防護服。[Example 7] The same method as in Example 5 was carried out, except that the amount of the hot-melt adhesive was changed to 2.0 g/m 2 , to obtain a laminated nonwoven fabric and separable protective clothing with a basis weight of 59 g/m 2 .
[比較例1] 除了將不織布（A）變更為包含聚丙烯樹脂的紡黏不織布（平均纖維徑：24 μm、單位面積重量20 g/m2 ）以外，利用與實施例1相同的方法獲得單位面積重量58 g/m2 的積層不織布及分離型的防護服。[Comparative Example 1] A unit was obtained in the same manner as in Example 1, except that the nonwoven fabric (A) was changed to a spunbond nonwoven fabric containing polypropylene resin (average fiber diameter: 24 μm, weight per unit area: 20 g/m 2 ) Laminated non-woven and separable protective clothing with an area weight of 58 g /m2.
[比較例2] 將積層不織布的結構設為芯鞘型複合短纖維熱黏合不織布/熔噴不織布（駐極體化）/芯鞘型複合短纖維熱黏合不織布，利用與實施例1相同的方法貼合，獲得單位面積重量48 g/m2 的積層不織布。再者，芯鞘型複合短纖維熱黏合不織布、熔噴不織布使用與實施例1相同的不織布。進而，對本積層不織布進行線縫製，獲得分離型的防護服。[Comparative Example 2] The structure of the laminated nonwoven fabric was a core-sheath type composite staple fiber thermally bonded nonwoven fabric/meltblown nonwoven fabric (electretized)/core-sheath type composite staple fiber thermally bonded nonwoven fabric, and the same method as in Example 1 was used. After bonding, a laminated nonwoven fabric with a basis weight of 48 g/m 2 was obtained. Furthermore, the core-sheath type composite short fiber thermally bonded nonwoven fabric and meltblown nonwoven fabric used the same nonwoven fabric as in Example 1. Furthermore, the present laminated nonwoven fabric was thread-sewn to obtain a separable protective suit.
對於實施例1～實施例7及比較例1～比較例2的各試驗體，將使用所述測定方法評價各特性值的結果示於表1中。Table 1 shows the results of evaluating each characteristic value using the above-mentioned measurement method for each test body of Examples 1 to 7 and Comparative Examples 1 to 2.
關於不織布（A）使用PP-PE芯鞘型複合短纖維熱黏合不織布（適用親水油劑）且將單位面積重量變更為15 g/m2 、20 g/m2 、25 g/m2 的實施例1～實施例3、使用PET-PE芯鞘型複合短纖維（單位面積重量25 g/m2 ）的實施例4，均為表面平滑性優異，表面粗糙度為3.0以下，摩擦係數為0.15以下。另外，是粉塵的捕集性能、透氣性亦優異的防護服。Regarding the non-woven fabric (A) using PP-PE core-sheath type composite staple fiber thermal bonding non-woven fabric (applicable hydrophilic oil agent) and the implementation of changing the basis weight to 15 g/m 2 , 20 g/m 2 , 25 g/m 2 Examples 1 to 3 and Example 4 using PET-PE core-sheath composite staple fibers (weight per unit area: 25 g/m 2 ) are all excellent in surface smoothness, with a surface roughness of 3.0 or less and a friction coefficient of 0.15. the following. In addition, it is a protective clothing with excellent dust collection performance and air permeability.
另外，關於變更為於不織布（A）中適用疏水油劑的PP-PE芯鞘型複合短纖維熱黏合不織布的實施例5、實施例6，與實施例2對比除了具有同等的表面粗糙度、摩擦係數、捕集性能、透氣性以外，聚苯乙烯粒子的透過性優異（A判定），為對於滅菌服而言較佳的防護服。In addition, about Example 5 and Example 6, which were changed to PP-PE core-sheath type composite staple fiber thermally bonded non-woven fabrics in which a hydrophobic oil agent was applied to the non-woven fabric (A), compared with Example 2, except that they had the same surface roughness, In addition to the coefficient of friction, trapping performance, and air permeability, polystyrene particles have excellent permeability (judgment A), and are suitable protective clothing for sterilization clothing.
關於實施例7，應用適用了疏水油劑的PP-PE芯鞘型複合短纖維熱黏合不織布，使接著劑量增加至3.0 g/m2 ，與實施例5、實施例6相比，為聚苯乙烯粒子容易透過的傾向（B判定）。Regarding Example 7, the PP-PE core-sheath composite staple fiber thermally bonded non-woven fabric applied with a hydrophobic oil agent was used to increase the adhesive dosage to 3.0 g/m 2 . Compared with Example 5 and Example 6, it was polystyrene The tendency of vinyl particles to permeate easily (B judgment).
關於不織布（A）使用包含聚丙烯的紡黏不織布的比較例1，表面平滑性差，表面粗糙度為3.3，摩擦係數為0.21。As for the nonwoven fabric (A), Comparative Example 1 using a polypropylene-containing spunbond nonwoven fabric had poor surface smoothness, a surface roughness of 3.3, and a friction coefficient of 0.21.
其次，於最外層的兩面使用了PP-PE芯鞘型複合短纖維熱黏合不織布（單位面積重量15 g/m2 ）的比較例2雖然具有與實施例1同等的表面平滑性，但撕裂強度差，不滿足JIS T8115：化學防護服的規格值，作為防護服的性能不充分。Next, Comparative Example 2 in which a PP-PE core-sheath type composite staple fiber thermally bonded nonwoven fabric (weight per unit area: 15 g/m 2 ) was used on both sides of the outermost layer had the same surface smoothness as Example 1, but was torn apart. The strength is poor, does not meet the specification value of JIS T8115: chemical protective clothing, and the performance as protective clothing is insufficient.
其次，關於實施例1～實施例5及比較例1的防護服（僅上衣），將藉由目視確認附著於外側的表面（不織布（A）面）的異物（灰塵、塵土等）的個數的結果示於表3中。實施例1～實施例7中記載的防護服均為≤2個/件（5件的平均值），與比較例1的6.5個/件（5件的平均值）相比，確認了可減少附著異物。Next, regarding the protective clothing (top clothing only) of Examples 1 to 5 and Comparative Example 1, the number of foreign objects (dust, dust, etc.) adhering to the outer surface (non-woven fabric (A) surface) was visually confirmed The results are shown in Table 3. The protective clothing described in Examples 1 to 7 are all less than or equal to 2 pieces/piece (average value of 5 pieces), and compared with 6.5 pieces/piece (average value of 5 pieces) of Comparative Example 1, it was confirmed that it can be reduced. Foreign matter attached.
[表1]
[表1]
[表2]
[表2]
[表3]
[表3]
本發明的防護服具有防塵性與透氣性且不易附著灰塵、塵土等異物並容易去除附著的異物，因此可較佳地用於粉塵防護用的防護服、滅菌服等用途。The protective clothing of the present invention has dust resistance and air permeability, and is not easy to adhere to foreign objects such as dust and dust, and can easily remove the attached foreign objects, so it can be preferably used for dust protection protective clothing, sterilization clothing and other applications.
1:試驗片 2:觀察部位 A:第一邊 B:第二邊 C:第三邊 D:第四邊1: Test piece 2: Observation site A: The first side B: The second side C: third side D: Fourth side
圖1是關於聚苯乙烯粒子透過性測定的觀察視野的概念圖。FIG. 1 is a conceptual diagram of the observation field of the polystyrene particle permeability measurement.
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