CN1014156B - Nonwoven fabric with improved abrasion resistance fastness and mfg. method thereof - Google Patents

Nonwoven fabric with improved abrasion resistance fastness and mfg. method thereof

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Publication number
CN1014156B
CN1014156B CN 86106922 CN86106922A CN1014156B CN 1014156 B CN1014156 B CN 1014156B CN 86106922 CN86106922 CN 86106922 CN 86106922 A CN86106922 A CN 86106922A CN 1014156 B CN1014156 B CN 1014156B
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fabric
layer
surface
web
greater
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CN 86106922
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Chinese (zh)
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CN86106922A (en )
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拉里·休伊·麦卡米什
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瑟吉科斯公司
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/54Non-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
    • D04H1/56Non-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 in association with fibre formation, e.g. immediately following extrusion of staple fibres

Abstract

本发明公开了一种具有改进的表面耐磨牢度的熔喷微纤维的布料,该布料有一层熔喷纤维组成的胶合层,其纤维的平均直径大于8微米,其中75%的纤维直径至少为7微米,它具有大于15周起团的湿态及干态耐磨牢度。 The present invention discloses a fabric having improved surface abrasion fastness of melt-blown microfibers, the cloth bonding layer has a layer composed of meltblown fibers, an average fiber diameter of greater than 8 microns, wherein at least 75% of the fiber diameter 7 microns, having greater than 15 weeks from the wet and dry abrasion group fastness. 本发明还公开了一种制造具有改进耐磨牢度的熔喷微纤维布料的方法,其特征包括:(1)形成至少一层热塑性熔喷微纤维芯网,(2)在所述芯网上用熔喷热塑性纤维形成至少一层未增强表面胶合网层,(3)所述至少一层胶合网层直接与所述至少一层芯网连接。 The present invention also discloses a method having improved fastness to rubbing of cloth manufacturing meltblown microfibers, characterized in comprising: (1) forming at least one layer of meltblown thermoplastic microfibers of the core web (2) in the core line forming at least one layer of meltblown thermoplastic fibers unreinforced surface glued ply (3) at least one of said at least one cemented mesh layer directly connected to the core network.

Description

本发明涉及一种改进的用微纤维网构成的非织造布料及其制造方法,该布料具有很高的表面耐磨牢度并特别适合于作为医用布料。 The present invention relates to a method of manufacturing a nonwoven fabric with an improved web of microfibers of the cloth having high surface abrasion fastness and are particularly suitable for use as a medical fabric.

本发明涉及一种非织造布料,特别是作为医用的布料。 The present invention relates to a nonwoven fabric, particularly as a medical fabric. 这里使用的“医用布料”这一名称,指的是可用于外科罩单、手术衣、器械包布等用途的布料。 "Medical fabric" herein used the name, refers to a fabric cover can be used for surgical drapes, surgical clothing, cloth and other uses of the instrument. 这类医用布料需具有一定的特性以满足这些用途对它们的要求。 Such medical fabrics have certain required properties to meet these requirements for the use thereof. 所述的特性包括强度、抗拒水或其他液体渗透的能力(一般称为“抗透印能力”)、透气性、柔软、悬垂性、可消毒性以及阻细菌性。 The properties include strength, the ability to resist penetration of water or other liquid (generally referred to as "anti-offset ability"), breathability, softness, drape, sterilizability, and bacterial barrier properties.

过去已将微纤维网用于需要具有阻档性能的场合。 Microfibrous web past been used where speed is required to have barrier properties. 微纤维指的是直径从小于1微米到10微米左右的纤维、微纤维网通常称为“熔喷”网,因为它们一般是用熔喷工艺制成的。 Means microfibers having a diameter of from less than about 1 to 10 micrometers fiber, micro fiber web is often called "meltblown" network, because they are generally made using meltblowing. 一般公认在纤维结构中使用较小直径的纤维可以得到高的斥液性或滤过特性而不致过度地影响它的透气性。 Fiber is generally accepted that the use of smaller diameter fiber structure can be obtained in a high liquid repellency or filtration properties without unduly affecting its permeability. 迄今以微纤维网制成的、以医用为目的的布料是一种以微纤维网组合起来层压而成的布料,或同提供其所需强度的纺粘的热塑性纤维网或热塑性薄膜或其他增强网粘合而成的布料。 Microfibrous webs made to date in order for the purpose of the medical fabric of thermoplastic fibers or a thermoplastic film comprising a combination of micro-fiber web fabric laminated together, or provided with its desired strength of spunbonded or other reinforcing mesh fabric bonded together.

对非织造的布料和医用布料都有一个同样的性能要求,即它的耐磨牢度。 Nonwoven fabrics and medical fabrics have a similar performance requirements, i.e., its abrasion fastness. 抗拒表面磨损的性能不仅影响布料的性能,也影响它的外观。 Resist surface wear properties not only affect the performance of the fabric, but also affect its appearance. 例如,表面纤维磨断脱毛对于医用布料来说是特别不受欢迎的。 For example, the surface of the fiber cloth medical milled for epilation is particularly undesirable. 此外,表面磨损也会损害医用布料的抗透印能力和阻菌能力。 Further, the surface will wear resistance and anti-offset ability of bacteria damage the ability of a medical fabric. 表面纤维脱毛以及起团或成珠对于许多以擦拭为用途的布料也是不能接受的。 And the surface of the fiber from Mission epilation or beading for many purposes in the wiping cloth is also unacceptable. 在外面复盖一层纺粘纤维网、热塑性薄膜或其他具有增强作用的网的方法已被用于提高熔喷纤维产品的表面耐磨牢度。 Outside covering layer of a spunbonded web, a thermoplastic film having a mesh or other reinforcement methods have been used to improve the surface abrasion fastness meltblown fiber product.

美国专利第4,041,203号公开了一种非织造的布料,它是由微纤维网和纺粘纤维网结合起来生产出具有良好的悬垂性、透气性、斥水性和表面耐磨牢度的一种医用布料。 U.S. Patent No. 4,041,203 discloses a non-woven fabric, which is a combination of micro-fiber web and up produce spunbond webs having good drape, breathability, water repellency and surface abrasion fastness a medical fabric.

美国专利第4,196,245号公开了将熔喷纤维或微纤维同带孔薄膜,或同带孔薄膜以及纺粘纤维品结合起来的生产方法,该方法中也同样是以带孔薄膜和纺粘纤维品作为制成的非织造的布料中提供强度和表面稳定度的成分。 U.S. Patent No. 4,196,245 discloses a method of producing the meltblown fibers or microfibers with apertured film, or in combination with apertured films and spunbonded materials, the method is also apertured films and spunbond fibers to provide product stability and strength of the component surface as a nonwoven fabric made of.

英国专利申请第2,132,939号公开了一种可作为医用的熔喷纤维层压布料,它是由熔喷微纤维网在规定位置的点上同非织造的增强网相熔合而成,该增强网由不连续的短纤维用气流成网法或湿成网工艺制成。 British Patent Application No. 2,132,939 discloses a laminate of meltblown fibers as a medical fabric, which is a melt-blown microfiber web being fused together with non-woven reinforcing mesh at a point a predetermined position, the reinforcing mesh made of discontinuous staple fiber made from air-laid or wet-laid process.

美国专利4,165,352公开了一种用于制造由熔喷热塑性网状材料制成的电池隔板的方法,该方法包括:(a)形成由至少三层熔喷随机叠置的热塑性树脂纤维制成的连续运动多层网,其中所述各层分别内外层叠置,通过机械或热连接把相邻层连接起来,所述内层纤维平均直径为2-10微米,所述外层纤维平均直径为30-40微米; U.S. Patent No. 4,165,352 discloses a method of manufacturing a battery separator by the meltblown thermoplastic web material is provided, the method comprising: (a) a thermoplastic resin is formed from at least three layers stacked random meltblown multilayer web made of continuous fibers motion, wherein said inner and outer layers are laminated facing, connect the adjacent layers are connected together by mechanical or thermal, the inner layer 10 microns average fiber diameter of the fiber layer The average diameter of 30-40 micrometers;

(b)用易挥发溶剂浸泡所述运动的网; (B) a volatile solvent soak the web movement;

(c)对位于相对放置的加热辊之间的浸泡过的网加压使其再成形,以机械方法去除网中的液体并加热烘干所述溶剂; (C) of the soaked web is located between the heating roller disposed opposing pressing it again shaped to mechanically remove liquid and heating and drying the web in said solvent;

(d)使所述网通过一干燥器以去除剩余的溶剂; And (d) the network through a dryer to remove the remaining solvent;

(e)把所述网切割成适当尺寸的块以适用于具有斥液性的电池隔板。 (E) said web into pieces of appropriate size to be suitable for having liquid repellency battery separator.

虽然上述布料比之其他不用微纤维的先有技术具有能够较好地在斥液性和透气性两者之间取得平衡的潜力,但在布面上加了具有较粗纤维的增强层之后,使得它们的优点受到了限制。 While other than the above-described fabric without microfibers prior art having the potential to achieve a balance between the air permeability and liquid repellency well, but the fabric surface a reinforcing layer applied after having coarser fibers, so that their advantages are limited. 授予Hotchkiss等人的美国专利第4,436,780号中介绍了一种少脱毛、少起条痕、吸收性好的熔喷的拭布,它由一层熔喷纤维的中间层夹在两层纺粘层之间组成。 U.S. Patent No. 4,436,780 granted to Hotchkiss et al describes a depilatory less, less streaks from the absorbent meltblown good the cloth, which consists of an intermediate layer of meltblown fibers sandwiched between two composition between the layers of the spunbond layers.

为了一般地改进熔喷网的表面耐磨牢度并减少其脱毛,已知的方法是将纤维网压得很实,或加入粘合物,或增加粘合物的含量。 In order to improve the general surface of the meltblown web and reduce its abrasion fastness hair removal, it is known to press the web is very real, or added to the adhesive or to increase the content of the adhesive. 一项共同未决的专利申请(JSU 58)提供一种用一层或多层未增强的微纤维制成的医用布料。 A co-pending patent application (JSU 58) to provide a medical fabric with one or more non-reinforcing micro-fibers. 所谓“未增强”是因为它不需层压或同其他型式的网或薄膜粘合起来而仍然具有足够强度可供医用。 The so-called "non-reinforced" because it does not require lamination or with another type of web or film are bonded together while still having sufficient strength for medical. 为了使该布料能用于需要高的耐磨牢度的用途,可在布料的表面加入少量的化学粘合剂。 In order to make the cloth can be used in applications requiring high abrasion fastness, a small amount of chemical binder can be added to the surface of the fabric.

英国专利申请2,104,562公开了将熔喷布料表面加热以使其具有不脱毛的光洁度的方法。 British Patent Application No. 2,104,562 discloses a method of heating the meltblown fabric surface so that the finish has not shed. 在一般已知的方法中有使用一定程度的加热和压实的做法,例如将微纤维网压花以提高其耐磨牢度。 Heating and compacting practices used to some extent in a generally known method, for example embossing microfiber web to improve its abrasion fastness.

上面提到的具有增强网层的布料需经历两道或两道以上成网工艺组合起来,结果是增加了工艺复杂性。 The above-mentioned reinforcing fabric having a mesh layer to be experienced two or more two-laid processes are combined, the result is to increase the complexity of the process. 此外,将较为常规的纤维网同微纤维网相粘合,将微纤维网压实或向其加入粘合剂都可能导致布料发硬,尤其是当需要高强度时更是如此。 Further, with the more conventional webs with adhesive microfiber web, the microfiber web a binder added thereto is compacted or may result in stiff fabrics, especially when it is desired especially when high strength.

本发明的目的是提供具有改进了表面耐磨牢度的未增强熔喷微纤维布料及其制造方法。 Object of the present invention is to provide a wear resistant surface having improved fastness meltblown microfiber cloth and a manufacturing method unreinforced.

本发明提供一种熔喷微纤维压花网,它具有改进的湿态和干态表面耐磨牢度,达到15周才起团的指标。 The present invention provides a melt-blown microfiber embossed web having improved wet and dry surface abrasion fastness, up to 15 weeks before starting group index. 耐磨牢度是在不使用额外粘合剂,并在不牺牲它的悬垂性或手感的条件下获得的。 Abrasion fastness is without additional adhesive, and obtained under the conditions without sacrificing its feel or drape.

根据本发明,布料的表面耐磨牢度的获得是由于加了一层由熔喷纤维构成的护面胶合层,胶合层纤维的平均直径大于8微米,其中75%纤维的直径至少有7微米。 Obtained according to the present invention, the surface of the fabric abrasion fastness is due to the addition of an armor layer of glue composed of meltblown fibers, the average fiber diameter of the bonding layer is larger than 8 microns, wherein the fibers have a diameter of at least 75% of 7 m . 该胶合层可用热压花或其他方法粘合到熔喷的芯网上,如同共同未决的申请(JSU 58)中所述者。 The glue layer can be heat embossing or otherwise bonded to a meltblown core web application (JSU 58) as those described in co-pending. 该胶合层同芯网的粘合,以及芯网的热压花可以由同一道工序来完成。 The adhesive bonding layer with the core network, and heat embossing of the core web may be performed by the same process. 此外,如芯网和胶合网多个模具喷丝的同一道工序来制造时,胶合网可以直接在芯网的面上形成,该胶合网具有很高的初始自身粘合力,从而可以省却将胶合层粘合到芯网上去的必要性。 Further, when the same process as the core network and a plurality of cemented mesh spinneret die is manufactured, glued on a surface of the core web may be formed directly in the web, the veneer web has high initial adhesive strength itself, which can save shift bonding layer bonded to the core the need to go online.

由于省却了外加的粘合剂,本发明提供了一种不需添加粘合剂并将其干燥及/或固化等多道工序的制造熔喷微纤维网的方法。 Since obviates the additional binder, the present invention provides a method for producing a melt-blown microfiber web plurality of processes and adhesive drying and / or curing without the addition. 此外,在固化或干燥粘合剂过程中造成影响布料的悬垂性和手感的热损伤的潜在可能性也排除了。 Further potential, thermal damage to affect cloth drape and feel of the adhesive during curing or drying process also excluded. 由于使用粘合液而使布料变硬的情况也不存在,使得有条件将芯网的加工条件调整到最有利于发挥它的其它优点的工况。 Since the fabric using the binding solution hardened case where there is no such conditions will be adjusted to the processing conditions of the core network operating conditions most conducive to play its other advantages.

另外,用熔喷纤维的胶合护面层可使该布料同时具有悬垂性和表面耐磨牢度,这一点是加粘合剂无法达到的。 Further, with the cloth bonding can armor layer of meltblown fibers having both drape and surface abrasion fastness, it is added to the binder can not be achieved. 用熔喷纤维来形成胶合层也提供了经济上的好处,并将生产该布料所需的技术减至最少。 Meltblown fibers used to form the bonding layer also provides economic advantages and production technique needed to minimize the cloth.

因此,本发明提供了一种不用粘合剂但具有改进的表面耐磨牢度的改进的熔喷的或微纤维的布料,它可以用作需要具有高的表面耐磨牢度的医用布料或拭布或其他用途。 Accordingly, the present invention provides a pressure-sensitive adhesive, but without the fabric with improved surface abrasion fastness improved or meltblown microfibers, which can be used as a medical fabric is required to have high surface abrasion fastness or the cloth or other purposes. 在推荐的实施方案中,本发明的布料由一层未增强的、熔喷的微纤维构成,它具有改进的表面耐磨牢度,例如大于15周起团,适合于用作医用布料,该布料最小的抓样抗拉强度与重量的比值大于0.8牛顿/克·米2,其最小的埃氏(Elmendorf)抗撕破强度与重量的比值大于0.04牛顿/克·米2。 In the preferred embodiment, the present invention consists of a layer of fabric unreinforced, melt-blown microfibers, having improved surface abrasion fastness, e.g., greater than 15 weeks from groups suitable for use as a medical fabric, which grab tensile ratio of the minimum weight of the fabric is greater than 0.8 N / g m-2, its minimum Eppendorf (Elmendorf) tear strength to weight anti-ratio greater than 0.04 N / m 2 · g. 在本发明的最佳实施方案中,其压花的、未增强的布料具有的湿态耐磨牢度至少可达30周起团,干态耐磨牢度至少可达40周起团。 In the preferred embodiment of the present invention, it embossed unreinforced fabrics having a wet abrasion fastness up from at least 30 weeks group, abrasion fastness dry state at least up to 40 weeks from group. 在达到这些性能指标的同时,它也具有作为医用布料所需的斥液性、透气性,特别是悬垂性等特性。 While achieving these performance index, it also has liquid repellency, air permeability required as a medical fabric, especially drapability properties.

根据本发明的改进的未增强熔喷微纤维布料,所述布料它具有改进的表面耐磨牢度,其特征包括:至少一层未增强热塑性熔喷微纤维芯网,所述芯网的最小抓样抗拉强度与重量的比值大于0.8牛顿/克·米2,其埃尔门多夫抗撕破强度与重量的比值大于0.04牛顿/克·米2,所述芯网的基本重量在14克/米2至85克/米2范围内;和在所述芯网上的至少一层未增强表面胶合网层,所述胶合网层由熔喷热塑纤维形成,该纤维平均直径大于8微米,其中75%的纤维直径至少为7微米,具有大于15周起团的湿态和干态表面耐磨牢度,其基本重量在3克/米2至10克/米2范围内,所述至少一层胶合网层直接与所述至少一层芯网连接。 According to the present invention an improved unreinforced melt-blown microfiber fabric, said fabric having improved surface abrasion fastness, further comprising: at least one layer of unreinforced thermoplastic meltblown microfibers of the core network, the core network a minimum grab tensile weight ratio greater than 0.8 N / m 2 · g, the ratio of anti Elmendorf tear strength to weight of greater than 0.04 N / m 2 · g, a basis weight in the core network 14 g / m 2 to 85 g / m 2 within the range; and in the core at least one layer of unreinforced web surface ply gluing, the glued ply formed from meltblown thermoplastic fibers, the average fiber diameter of greater than 8 microns wherein at least 75% of a fiber diameter of 7 micrometers, with greater than 15 weeks from groups and wet abrasion fastness dry surface, having a basis weight in the range of 3 g / m 2 to 10 g / m 2, the gluing at least one web layer is directly connected to the at least one core network.

根据本发明所述的布料,其特征在于,所述布料在间断的离散粘合区内用热压法压花,粘合区占布料表面5%至30%。 The fabric according to the present invention, wherein the fabric at discrete bonding areas with intermittent hot embossing method, an adhesive area accounting for 5-30% fabric surface.

根据本发明所述的布料,其特征在于,所述布料具有至少30周起团的湿度耐磨牢度和至少40周起团的干态耐磨牢度。 The fabric according to the present invention, wherein, said fabric having a humidity of at least 30 weeks from groups dry abrasion fastness and fastness to rubbing groups from at least 40 weeks.

根据本发明所述的布料,其特征在于,其基本重量不大于60克/米2,其最小抓样抗拉强度不低于65牛顿,其最小埃尔门多夫抗撕破强度不低于6牛顿。 The fabric according to the present invention, wherein a basis weight of no greater than 60 g / m 2, the minimum Grab tensile not less than 65 Newtons, a minimum Elmendorf tear strength not less than Anti 6 Newton.

根据本发明所述的改进的未增强熔融微纤维布料,其特征在于,所述表面胶合网层的纤维平均直径约为9微米。 The improvement of the present invention does not melt micro reinforcing fiber cloth, wherein said surface layer is glued web average fiber diameter of about 9 microns.

根据本发明的改进的未增强熔喷布料,所述布料具有改进的耐磨牢度,其特征包括:至少一层未增强热塑性芯网,其中至少80%的纤维直为7微米或更小,其纤维的自身粘合作用提供给该布料的条样抗拉强度的份额不超过30%,和在所述芯网上的至少一层未增强表面胶合网层,所述表面胶合网层由热塑性熔喷纤维形成,该纤维平均直径大于8微米,其中75%的纤维直径至少为7微米,其基本重量在3克/米2至10克/米2范围内,所述布料在间断的离散粘合区用热压法压花,粘合区占布料表面的5%至30%,该芯网的最小抓样抗拉强度与重量的比值大于0.8牛顿/克·米2;其埃尔门多夫抗撕破强度与重量的比值大于0.04牛顿/克·米2,具有至少30周起团的湿态耐磨牢度和至少40周起团的干态耐磨牢度,所述至少一层胶合网层直接与所述至少一层芯网连接。 According to the present invention an improved unreinforced melt-blown fabric, said fabric having improved abrasion fastness, further comprising: at least one layer of non-reinforced thermoplastic core network, wherein at least 80% of the fibers 7 is straight microns or less, adhesion of its own share of the fiber is provided to the cloth strip-like tensile strength not more than 30%, and at least one non-bonding surface of the reinforcing mesh layer, said surface layer is made of a thermoplastic melt glue web in the web of the core spray forming fibers, the fibers having an average diameter of greater than 8 microns, 75% of the fibers of at least 7 microns in diameter, having a basis weight in the range of 3 g / m 2 to 10 g / m 2, the fabric in discrete discontinuous adhesive region by hot pressing, embossing, adhesive areas accounted for 5-30% of the surface of the fabric, the minimum core network grab tensile weight ratio greater than 0.8 N / m 2 · g; the Elmendorf anti-tear strength to weight ratio greater than 0.04 N / m 2 · g, having at least 30 weeks from dry wet abrasion fastness and fastness to rubbing groups from at least 40 weeks groups, the at least one cemented web layer is directly connected to the at least one core network.

根据本发明所述的改进的未增强熔喷布料,其特征在于,所述表面胶合网层纤维的平均直径约为9微米。 An improved unreinforced melt-blown fabric according to the present invention, wherein the surface of the fiber web layer glued average diameter of about 9 microns.

根据本发明的制造具有改进耐磨牢度的熔喷微纤维布料的方法,其特征包括:(1)形成至少一层热塑性熔喷微纤维芯网,其最小抓样抗拉强度与重量的比值大于0.8牛顿/克·米2,其最小埃尔门多夫抗撕破强度与重量的比值大于0.04牛顿/克·米2,其基本重量在14克/米2至85克/米2范围内; The manufacturing method of the present invention having improved abrasion fastness meltblown microfibers of the fabric, characterized in comprising: (1) forming at least one layer of meltblown thermoplastic microfibers of the core web, a minimum grab tensile strength to weight ratio comp greater than 0.8 N / m 2 · g, the ratio of anti minimum Elmendorf tear strength to weight of greater than 0.04 N / m 2 · g, a basis weight of 2-85 g 2 in the range of 14 g / m / m ;

(2)在所述芯网上用熔喷热塑性纤维形成至少一层未增强表面胶合网层,所述胶合网层具有较高的初始自身粘合作用,其纤维的平均直径大于8微米,其中75%的纤维直径至少为7微米,所述胶合网层基本重量在3克/米2至10克/米2范围内,其湿态表面耐磨牢度和干态表面耐磨牢度大于15周起团; (2) forming a meltblown web of thermoplastic fibers in the core at least one layer of non-reinforced ply bonding surface, said bonding layer having a net higher initial adhesion itself, an average fiber diameter of greater than 8 microns, wherein 75 % of a fiber diameter of at least 7 microns, by weight of the glue ply substantially in the range of 3 g / m 2 to 10 g / m 2, the surface thereof wet and dry surface abrasion fastness, abrasion fastness of greater than 15 weeks from Mission;

(3)所述至少一层胶合网层直接与所述至少一层芯网连接。 (3) the at least one ply glued directly connected to the at least one core network.

根据本发明所述的制造具有改进耐磨牢度的熔喷微纤维布料的方法,其特征在于,所述胶合网层的纤维直径平均为9微米。 The manufacturing method according to the present invention has an improved melt-blown microfibers of the fabric abrasion fastness, wherein the fiber diameter of the cemented ply 9 microns on average.

根据本发明所述的制造具有改进耐磨牢度的熔喷纤维布料的方法,其特征还包括将所述层压料在间断的离散粘合区用热压法压花粘合。 The manufacturing method according to the present invention having improved abrasion fastness meltblown fiber cloth, characterized by further comprising the discrete bonding zones intermittently bonded laminate material in a hot press method by embossing.

根据本发明的制造未增强的具有改进表面耐磨牢度的微纤维布料的方法,其中,一种可以形成纤维的热塑性聚合树脂在熔融状态下被压过位于加热喷头内的一排小孔进入一股惰性气流中,使该树脂散射成纤维,该纤维在一个接收器上被收集并形成一层网,该网被热粘合以形成布料,该方法的特征包括:(1)在第一个加热喷头处,保持熔融的聚合物在一定的、分子降解程度最小的温度水平,控制一次空气的流速、容积和温度、聚合树脂的流量及出口温度以制成第一层热塑性纤维,该纤维的平均直径大于8微米,且其中有75%的纤维直径至少为7微米,在一定距离外的接收器上收集所述的纤维以形成自身粘合程度高的第一层未增强表面胶合网层,所述纤维基本重量在3克/米至10克/米范围内,且其湿态表面耐磨牢度和干态表面耐磨牢度大于15周起团; The wear resistant surface having improved fastness micro fiber cloth of the present invention for producing unreinforced, wherein a thermoplastic polymeric resin may be formed of fibers is pressed through a nozzle discharge orifice located in a heated molten state into the an inert gas stream, the resin is scattered into fibers, the fibers are collected to form a layer of mesh on the receiver, the web is thermally bonded to form fabrics, the method characterized by comprising: (1) in the first heating at the nozzle, to maintain a certain molten polymer, the degree of molecular degradation of the minimum temperature level, controlling the primary air velocity, volume and temperature, flow rate and the outlet temperature of the polymeric resin to form a first layer of thermoplastic fibers, the fibers the average diameter greater than 8 microns, and wherein 75% of the fibers of at least 7 microns in diameter, on the receiver from a distance of collecting the fibers to form a high degree of self-adhesive surface of a first layer of unreinforced glue ply the fiber basis weight of 3 g / m to 10 g / meter range, and the wet and dry surface abrasion fastness fastness to rubbing surface from greater than 15 weeks group;

(2)在第二个加热喷头处,保持熔融的聚合物在一定的、分子降解程度最小的温度水平,控制一次空气的流速、容积和温度以制出热塑性纤维,该纤维中至少80%的直径为7微米或更小,其平均长度在10厘米以上,另外导入一股其流量足以冷却并保持所述的纤维分开的高度均匀的高速二次空气,在一定的成型距离外收集所述的纤维使其形成一层芯网,在进一步将该网压花使形成布料之前该网内纤维间的粘合程度很低,该所述的芯网的纤维是收集在所述的第一层表面胶合网层的面上的,所述胶合网层直接与所述芯网连接。 (2) heating the second head, the molten polymer is maintained at a certain, minimum degree of molecular degradation temperature level, controlling the flow rate, volume and temperature of the primary air to produce the thermoplastic fibers, the fibers of at least 80% having a diameter of 7 microns or less, having an average length of more than 10 cm, introducing an additional flow rate sufficient to maintain a high and uniform cooling speed of the secondary air to separate the fibers, collecting the outer molding certain distance to form a core layer of fiber network, low degree of adhesion between the fibers in the web before the web further embossed fabric is formed, the fibers of the core web are collected on the surface of said first layer gluing surface ply, the ply bonding is directly connected to the core network.

(3)在第三个加热的喷头处制成第二层表面胶合网层,其纤维同所述的第一胶合网层的纤维相似,并将该所述的第二层表面胶合网层收集在芯网露出的面上。 The second layer of mesh glued surface layer (3) is made in a third heated nozzle surface of the second bonding layer web layer, which fibers of the fibrous web with said first glue layer similar to the collection and the the exposed surface of the core network.

根据本发明所述的制造未增强的微纤维压花布料的方法,其特征在于,所述的胶合网层的纤维的平均直径约为9微米。 The method for producing a non-reinforced microfiber embossed fabric according to the present invention, wherein an average fiber diameter of the glue layer is about 9 [mu] m mesh.

根据本发明所述的方法,其特征还包括将所述的几层网用热压花法粘合。 The method of the present invention, which is characterized in comprising the further layers of mesh bonded by hot embossing method.

下面是本说明书的附图的内容:图1是熔喷工艺的透视图; The following are the drawings of this specification: FIG. 1 is a perspective view of a meltblowing process;

图2是表明模具和二次空气源位置的剖面图; FIG 2 is a cross-sectional view of a die show and secondary air source position;

图3是挤压模具的局部详图,图中示出了“负错位”的布置方式; FIG 3 is a detail view of the extrusion die, there is shown a "negative offset" arrangement;

图4是挤压模具的局部详图,图中示出了“正错位”的布置方式。 FIG 4 is a detail view of the extrusion die, there is shown a "positive offset" arrangement.

从最广义的角度,本发明的内容包括在一层微纤维网面上供给一层熔喷纤维的表面胶合层,该表面胶合层的纤维的平均直径大于8微米,其中至少有75%的纤维的直径至少有7微米。 From its broadest sense, the present invention comprises supplying a cemented surface layer of meltblown fibers on one surface of the web microfibers, the average fiber diameter of the cemented surface layer is greater than 8 microns, wherein at least 75% of the fibers at least 7 microns in diameter. 在用于大多数布料时,该表面胶合层是层压到网的其余部分去的,例如用压花粘合法,或用其他常用的方法将它们结合起来。 When used in most fabrics, the surface of the bonding layer is laminated to the rest of the network to, for example, by embossing bonding, or other conventional method of combining them. 这样,该表面胶合层可以与纤维网的其余部分开来成型后再热粘合到它的面上去,最好是在分散而间断的粘合区粘合。 Thus, the surface layer may be glued to the rest of the web to mold opening and then thermally bonded to its surface to preferably the adhesive intermittently in a dispersion adhesive areas. 或者也可以使该胶合层在它具有很高的初始自身粘合力的状态下成型于纤维网的其余部分的面上,这样可以免除专门将胶合层粘合到纤维网的其余部分上去的工序,虽然或许还需对布料进行热压花。 Or it may be such that the glue layer on its surface has a high initial adhesive force under its own state in the rest of the molded fibrous web, which can be specifically exempted bonding layer bonded to the remainder of the web up step Although the fabric may need to be hot embossing. 按本发明生产的布料表现出具有改进的湿态和干态的表面耐磨牢度,特别适合于作为拭布或医用布料。 Produced according to the present invention having fabric exhibits improved wet and dry surface abrasion fastness, especially suitable as wipes or medical fabrics.

最广义地说,本发明的工艺可以在常规的熔喷设备上实施,该常规设备需经改造使之具有高速的二次空气,如同共同未决申请JSU58中或图1中所示。 In its broadest sense, the process of the present invention may be implemented on a conventional meltblowing apparatus, the conventional apparatus for an engineered so as to have a high-speed secondary air, as in copending application JSU58 FIG. 1 or FIG. 根据所示的装置,一种丸状或粒状的热塑性树脂从料斗10加入,这些颗粒然后进入挤压机11,挤压机中的温度在分区的多个加热段内受到控制,使树脂被加热到其熔点以上。 The device shown in a granular or pellet-like thermoplastic resin was added from the hopper 10, the temperature of the particles and then enters the extruder 11, the extruder is controlled in a plurality of heating zones partitions, so that the resin is heated above its melting point. 挤压机由电动机12推动,该电动机将树脂移动普通过挤压机的加热区进入模具13。 Extruder 12 driven by a motor which moves the resin ordinary heating zone into the mold through an extrusion machine 13. 模具13也可以具有多个加热区段。 Mold 13 may have a plurality of heating section.

如图2所示,树脂从挤压机进入加热室29,后者位于上、下模板30和31之间。 2, the resin 29 into the heating chamber from the extruder, which is located between the upper 30 and lower die plate 31. 这些上、下模板由加热器20加热,使模具的温度和腔室29内树脂的温度达到要求的水平。 On these, the lower plate 20 heated by the heater, and the temperature of the mold cavity 29 within the resin temperature reaches the required level. 然后树脂被从一组开于模具面内的小孔17中挤出。 The resin is then opened at apertures in the surface of the die 17 extruded from a group. 一般沿模具宽度每厘米约有12个小孔。 Generally along the die width of about 12 pores per centimeter.

一般热的惰性气体(一般是空气)从管道14进入气室19。 Usually hot inert gas (typically air) into the gas chamber 19 from pipe 14. 被称为“一次空气”的这股热气体然后流入槽隙32和33,该槽隙布置在树脂喷咀17的两边。 Is referred to as "primary air" in this unit and the hot gas flows into the slots 32 and 33, the slots 17 disposed on both sides of the resin nozzle. 当树脂流出喷咀17时,热气体将它散射成纤维。 When the resin flows out of the nozzle 17, the hot gas scattering it into fibers. 槽隙32或33的宽度被叫做空气间隙。 The width of the slots 32 or 33 is called an air gap. 形成的纤维被热空气导向一条形成纤维网的多孔传送带(或接收器)22,在其上形成一层垫或网26。 Fibers formed by a hot air guide forming a porous fibrous web conveyor belt (or receiver) 22, a layer of mat or web 26 formed thereon. 一般使用一个真空室23来协助收集纤维,真空室23与抽真空的管道24相连。 A vacuum chamber typically used to facilitate the collection fiber 23, the conduit 23 is connected to the vacuum chamber 24 is evacuated. 传送带22围绕着滚筒25移动,从而使形成的网是连续的。 Belt 22 moves around the roller 25, so that the web formed is continuous.

喷咀17的出口和气流槽隙32和33可以位于同一平面内,也可以错开。 An outlet nozzle 17 and gas stream 32 and the slots 33 may be located within the same plane and to be displaced. 图3示出喷咀的出口缩在模具的表面和槽隙32、33的平面里边。 Figure 3 shows the nozzle outlet and the surface of the mold shrinkage in slots 32, 33 inside the plane. 这种布置方式称为“负错位”。 This arrangement is called "negative displacement." 负错位的尺寸在图3中用两个相对的箭头标示。 Negative misalignment in three dimensions indicated by two opposing arrows in FIG. 图4示出的是“正错位”,在此位置时喷咀17的出口伸出于模具的表面和槽隙32、33的平面之外。 FIG. 4 shows a "positive displacement", in this position the nozzle outlet 17 extends outside the planar surface and slots 32, 33 of the mold. 正错位的尺寸在图4中用两个相对的箭头标示。 Positive displacement dimension marked by two opposing arrows 4 in FIG. 在本工艺方案中使用负错位较好,因它允许空气间隙的布置可以具有较大的灵活性而不会对生产出的网的质量有不利的影响。 In this process scheme is preferably used in a negative offset, adversely affected by the arrangement of the air gap which allows greater flexibility may be produced without the quality of the network.

本发明的布料含有一层表面胶合层和一层芯网。 Fabric of the invention contains a surface layer of the core layer and the bonding layer mesh. 最好是布料包含一层芯网,而其两面都有一层表面胶合层。 Preferably the fabric comprises a layer of core network, while the surface on both sides and one bonding layer. 在本发明中,“胶合层”是一层纤维网,其基本重量不超过布料总重量的50%。 In the present invention, "bonding layer" is a layer of a web having a basis weight of not more than 50% of the total weight of the fabric. 更好一些是胶合网层的基本重量约为布料总重的25%,而最好是占布料总重的15%至25%。 It is better glued web layer basis weight of about 25% of the total weight of the fabric, and preferably accounts for 15-25% of the total weight of the fabric. 胶合层的网可以同芯网分开制造,然后面对面地结合起来。 Mesh bonding layer may be manufactured separately with the core network, and then combined face to face. 用这一方法时,每层胶合层的网的基本重量必须在6克/米2左右以使能方便地与芯网结合起来。 When using this method, the basis weight of each web glue layer must be about 6 g / m 2 so that can be easily combined with the core network. 另外的方法是,芯网和胶合层分上、下层同时形成,例如在传送带22上先形成胶合层作为底层,然后使芯网的纤维沉降在该底层的上面。 Another method is the bonding layer and the core network points, while the lower layer is formed, for example, is first formed on the conveyor belt as the bottom glue layer 22, and then the fiber core web settling on top of the bottom layer. 在本发明的这个推荐方案中,一层重量约为3克/米2的胶合层先在传送带上形成,然后它接受吹来的芯网,而芯网又接受沉积在它上面的另一层重量约为3克/米2的胶合层。 In this preferred embodiment of the present invention, a layer of bonding layer weight of about 3 g / m 2 is formed first on the conveyor belt, and then blowing it accepts the core network and the core network and to accept another layer deposited thereon bonding layer weight of about 3 g / m 2. 另外的方案是,采用分别成网的步骤将胶合网层的纤维沉积到芯网的两个面上。 Further embodiment, the step of using each of the two surfaces laid fibrous web layer deposited glued to the core network. 此后,芯网和胶合层的网可以进行层压,例如用热压花法进行层压。 Thereafter, the core network and the mesh bonding layer may be laminated, for example, hot embossing laminating method. 当将胶合网层沉积到芯网面上时,如果胶合网层的形成条件是能提供很高初始的纤维间粘合或自身粘合程度的,包括高的模具温度、不使用二次空气、成网距离短等(后面还要详述),就不一定需要将胶合层和芯网进行层压(例如用热压花法),也不需将胶合层压花。 When the mesh layer is deposited onto the cemented surface of the core network, if the network layer forming conditions are glued to provide high initial interfiber bonding or the extent of their bonding, including high die temperature, no secondary air is used, laying laminated (e.g., by hot embossing method), and need not take the glue-laminated and short distance (also described in detail later), you do not necessarily need to glue layer and the core network. 芯网在胶合层的纤维沉积上去之前可以是经过压花的,也可以未经压花。 Core before the fiber web is deposited up glue layer may be embossed, the embossing can not. 按本发明生产的压花层压布料具有的耐磨牢度,在湿态时为至少30周起团,在干态时为至少40周起团。 According to the present invention for producing a laminated fabric having an embossed abrasion fastness, when wet of at least 30 weeks from Mission, when in the dry state of at least 40 weeks starting group.

如下面将要说明的,按照上述方法,有可能在增加聚合物的通过量并减少一次空气量的条件下,只用一个熔喷模具就可以制成本发明的布料。 As will be explained, as described above, it is possible to increase the amount of polymer and by reducing the amount of primary air conditions, only a meltblown fabric can be made of the invention. 在最好的生产本发明的布料的方案中则是使用多个模具的。 In the best production of fabrics of the present invention is the use of the embodiment of a plurality of molds.

在其最优选的方面,本发明是一种改良的、未增强的熔喷微纤维的供医用的布料。 In its most preferred aspect, the present invention is an improved, cloth unreinforced melt-blown microfibers for medical use. 该布料的最小抓样抗拉强度与重量的比值至少为0.8牛顿/克·米2,其最小的埃氏(Elmendorf)抗撕破强度与重量的比值至少为0.04牛顿/克·米2。 The minimum tensile strength and grab cloth weight ratio of at least 0.8 Newtons / g m-2, its minimum Eppendorf (Elmendorf) tear strength to weight anti ratio of at least 0.04 N / m 2 · g. 下面将就该最佳实施方案作更详细的说明。 In respect of preferred embodiments will now be described in more detail.

医用布料的要求相当严格。 Very strict requirements for medical fabrics. 当布料在正常使用条件下,例如在手术室环境内使用时,必须具有足够的强度以抗拒撕破或拉开。 When the fabric, for example in the operating room environment under normal conditions of use, must have sufficient strength to resist tearing or opened. 这对于制作手术室服装的布料更是如此,例如手术衣、洗刷服或外科罩单等。 This produced an operating room apparel fabrics especially, for example, surgical gowns, surgical scrub suit, or the like cloths. 衡量非织造布料强度的指标是它的抓样抗拉强度,其定义是在试验机上的试样面上能拉出一个10厘米宽的口子所需的载荷。 The nonwoven fabric measure its strength Grab tensile, which is defined as the required load on the specimen surface can be drawn on the tester hole in a 10 cm wide.

在非织造的布料上进行抓样强度试验的方法在ASTM D1117号标准中作了规定。 Grab strength test method of the nonwoven fabric on the number provided for in ASTM D1117 standard. 非织造的医用布料还必须能抗拒撕破。 Non-woven medical fabrics must also be able to resist tearing. 抗撕破的强度一般是用埃尔门多夫撕破试验来测定的,也在ASTM D1117号标准中作了规定。 Anti-tear strength is generally measured by the Elmendorf tear test, also made a predetermined number of standard ASTM D1117. 抓样抗拉强度是以在布的最弱的方向,通常是布机的横向的最低值来规定的,一般是在45牛顿范围内,而其最弱方向的抗撕破强度则在2牛顿左右。 Grab tensile is the weakest fabric direction, generally transverse to the predetermined minimum value of the cloth, and is generally in the range of 45 Newtons, and its anti weakest direction tear strength at 2 newtons about. 在这些载荷水平布料会出现破损,但人们希望它的强度能更高些。 In these loads will damage the fabric level, but it is hoped its strength can be higher. 如布料的抓样抗拉强度能达到并超过约65牛顿、抗撕破强度能达到并超过约6牛顿,则作为一种特殊的医用布料它将可得到更广泛的应用。 The fabric can be achieved and Grab tensile in excess of about 65 Newtons, an anti-tear strength and can reach more than about 6 Newtons, it is a special kind of medical fabric as it will result in more extensive applications. 本发明的最佳布料具有很高的强度与重量的比值,因此在理想的重量下,其抓样抗拉强度和抗撕破强度都可达到比上述数字更高的水平。 Best fabric of the present invention has a high strength to weight ratio, and therefore in an ideal weight, the grab tensile and tear strength can reach a higher level than the above figure. 它的基本重量一般在14到85克/米2范围内。 Its basis weight is generally in the range of 14 to 85 g / m 2.

医用布料还必须具有排斥液体的性能,包括排斥医院手术室内经常遇到的血的性能。 Medical fabrics must also have properties repel liquids, including blood repellency properties often encountered in hospital operating room. 由于这些液体是将微生物从一处传播到另一处的方便的载体,斥液性是医用布料的一个关键的功能特性。 Since these liquids are microorganisms propagate from one place to another at a convenient carrier, liquid repellency is a critical medical fabric features. 斥液性主要受到布料上微孔的影响,其数值是根据AATCC 127-1977号标准规定的“静水压头”试验来测定的。 Liquid repellency is mainly influenced by the cloth pores, which value is determined according to the "hydrostatic head" test as specified in AATCC Standard No. 127-1977. 该试验的结果以透过给定的布料样品所需的水柱高度所代表的压力来表示。 Results of the test to a given pressure through the water column height needed for fabric samples represented by FIG. 因为一种给定的布料抗拒液体渗透的极限能力决定于该布料的微孔结构,静水压头试验是一种有效的评价医用布料内在的抗渗透特性的方法。 A method as an effective evaluation of intrinsic properties of the medical fabric impervious to liquid penetration capacity limit depends on the pore structure of the fabric, the hydrostatic head test is given fabric resistance. 不包含不透水薄膜或微纤维网的非织造医用布料一般的静水压头数值为20至30厘米水柱。 It does not include impermeable films or microfiber web of nonwoven fabrics for medical general hydrostatic head value of 20 to 30 cm of water. 通常认为这样的数值对手术衣和外科罩单并不最理想,尤其在某些遭受感染的风险很高的场合。 This value is generally considered for surgical gowns and surgical mask alone is not ideal, especially in certain high risk situations suffer from infection. 40厘米或更高的压头值要更理想些。 40 cm or more, more preferably for a head values ​​more. 可惜的是,目前可供使用的按先有技术生产的具有很高静水压头数值的布料的透气性很差,或强度较低。 Unfortunately, currently available according to the prior poor ventilation has a high hydrostatic head value of the fabric production technology, or lower intensity. 本发明的布料可以达到很高的抗液体渗透的性能。 Fabric of the present invention can achieve a high resistance to liquid penetration properties.

医用布料的透气性也是一个希望具有的特性。 Permeability is a medical fabric having the desired characteristics. 这一点对于做衣着的布料来说尤其需要。 This is especially a need for clothing fabrics do it. 布料的透气性同湿汽传播率(MVTR)和空气穿透性都有关。 Air-permeable cloth with the moisture vapor transmission rate (the MVTR) and air permeability are related. 由于大多数用于医用布料的纤维网都具有适当高的湿汽传播率,因此空气穿透性能的测量是对其透气性进行判别的一个适当的定量试验。 Since most webs used for medical fabrics have suitably high moisture vapor transmission rates, and therefore air penetrating the measurement performance is a suitable quantitative assay to discriminate its breathability.

一般来说,布料越是松稀,其空气穿透性也越好。 Generally, the more loose fabric lean, the better its air permeability. 因此,压得很密致、只具有很细的细孔结构的纤维网其空气穿透性不佳,通常被认为是透气性很差的。 Thus, the pressure is very dense, only a very fine pore structure of the web which is poor air permeability, air permeability is generally considered to be poor. 增加布料的重量也会降低它的空气穿透性能。 Increased fabric weight and air permeability will reduce its performance. 测量空气穿透性的方法是ASTM D737号标准规定的弗雷译(Frazier)空气孔积率试验。 The method of measuring the air permeability is translated Frey (Frazier) of a predetermined volume of air holes ASTM D737 standard test number. 弗氏空气孔积率低于8米3/分·米2的布料做成的医用服装穿上时间稍久就会感到不舒适。 Freund air hole area ratio of less than 8 m 3 / min · m 2 fabric made of medical garments to wear a long time will feel a little uncomfortable. 本发明的布料具有很好的透气性而不牺牲它的斥液性或强度。 Fabric of the present invention has good breathability without compromise of its liquid repellency or strength.

医用布料还必须具有良好的悬垂性,后者有多种测量方法,包括库锡克(Cusick)悬垂性试验。 Medical fabrics must also have good drapability, which measure a variety of methods, including library Sik (Cusick) drape test. 在库氏悬垂性试验中,一片圆形的布料被同心地夹在两个水平的圆盘之间,圆盘的直径较布样的直径小些。 In the library's drape test, a circular fabric concentrically sandwiched between two horizontal discs, than the diameter of the disk diameter smaller swatches. 布样软垂下来形成围着圆盘周边的褶裥。 Soft cloth-like hanging formed around the periphery of the disk pleats. 将这些褶裥的外形投射到一张水平的、同布样原来未被压住部分的尺寸相同的圆环形纸上。 These pleats projecting to a level appearance, with the swatches had not pressed the same sheet size annular portion. 将纸上的褶裥投影描绘下来,称量该圆环形纸片的重量,然后将纸片沿着褶裥的投影线剪开,再称量被剪下的内环的重量。 The pleated paper drawing down the projection, the annular sheet was weighed, and then the sheet along a projection line pleats cut, weighed and then cut in the inner ring. 此内环重量除以纸环的原始重量再乘以100便得到所谓的“悬垂系数”。 This inner ring divided by the weight of the raw paper by weight multiplied by 100 will give a so-called "drape coefficient." 此系数越小,该布料的悬垂性就越好。 This coefficient is smaller, the drape fabric better. 本发明的布料用此方法测得的悬垂性很好。 Fabric of the present invention is measured by this method is a good drapability. 悬垂性同布料的柔软度和弹性有良好的对应关系。 Drape a good relationship with the corresponding softness and elasticity fabric.

除了上述的一些特性外,医用布料还必须具有抗静电性和耐燃性。 Except for the above characteristics, medical fabrics must also have antistatic properties and flame resistance. 布料还应具有良好的耐磨牢度,而且不会掉下小的纤维头来,一般称这种掉纤维头的现象为“脱毛”。 Fabric should also have good abrasion fastness, and will not fall off small fiber head, generally referred to this phenomenon as the head out of fiber "hair removal."

除了具有上面提到的特性以外,本发明的最佳布料同先有技术的熔喷纤维网的不同点还在于它网中的单根纤维的平均长度比先有技术的网中纤维的平均长度要长些。 In addition to having the above mentioned characteristics other than the best fabric with the present invention differs from meltblown webs of the prior art in that it is the average length of individual fibers in the web average length of fibers in the web than the prior art to longer. 在芯网中纤维的平均长度大于10厘米,更好些是大于20厘米,最好是在25至50厘米之间。 The average length of the fibers in the core network of more than 10 cm, better greater than 20 cm, preferably between 25 and 50 cm. 此外,芯网纤维的平均直径应不大于7微米。 Further, the average fiber diameter of the core web should be no greater than 7 microns. 纤维的直径分布应是至少有80%的纤维的直径是小于7微米的,更好是至少有90%的纤维的直径是小于7微米的。 Distribution of the fiber diameters should be at least 80% of the diameter of the fibers is less than 7 microns, more preferably at least 90% of the diameter of the fibers is less than 7 microns.

在本发明的说明中,“网”这个名词指的是由熔喷工艺制成的未粘合的网。 In the description of the present invention, the "net" the term refers to the unbonded web formed by the meltblown process. 而“布料”这一名词则指的是经过热压花或其他工艺粘合的网。 The "fabric" of the term refers to a process through heat embossing or other bonding network.

本发明的最佳布料是一种未经增强的熔喷纤维热压花而成的布料,它有一层芯网,是由平均长度大于10厘米的纤维组成的;这些纤维中至少有80%纤维的直径为7微米或小于7微米,在该芯网的一面或两面有一表面胶合层,该胶合层的纤维的平均直径大于8微米,其中75%的纤维直径至少有7微米。 Best fabric of the present invention is a non-fiber-reinforced melt blown fabric made of hot embossing, which has a core layer of the network, the average fiber length is greater than 10 cm thereof; these fibers at least 80% fiber a diameter of 7 microns or less than 7 microns, in which one or both sides of the core web has a surface bonding layer, the average fiber diameter of the bonding layer is larger than 8 microns, wherein 75% of the fiber diameter of at least 7 microns.

在制造本发明的最佳布料的工艺中,芯网的纤维在喷出模具后立即同一股高速的二次空气接触。 In the preferred process for producing the fabric of the present invention, the core web fibers immediately contacting the same high velocity secondary air is ejected after the mold. 胶合层的纤维则可以同高速的二次空气接触,也可以不同它接触。 Fiber bonding layer may be in contact with the secondary air speed, it may be different from the contact. 二次空气是室内或室外温度下的环境空气,需要时,该二次空气也可以是经过冷却的。 The secondary air is ambient air in the indoor or outdoor temperature, if desired, the secondary air may be cooled through. 二次空气在压力下从一个合适的气源经过管子15进入装于模具两边的分配器16。 Secondary air under pressure from a suitable air source 15 through the tube into the mold mounted on both sides of the dispenser 16. 分配器一般与模具一样长,它具有斜面35,在靠近模具表面处开有孔27。 The dispenser is generally as long as the mold has an inclined surface 35 which, at the mold surface near the hole 27 is opened. 二次空气的流速可以通过提高管子15内的压力或通过一块档板28来调节。 Secondary air flow rate can be adjusted by increasing the pressure in the pipe 15 or 28 by a baffle. 档板28用来减小孔27的尺寸,从而在保持流量不变的情况下提高从分配器流出的空气速度。 Baffle 28 serves to reduce the size of the hole 27, thereby maintaining the air velocity increase from flowing out of the dispenser case where the flow rate constant.

本发明的非织造布料与先有技术的含有微纤维的布料的不同处在于它利用熔喷工艺来制造胶合层,该胶合层纤维的特性与芯网的微纤维的特性不同。 The nonwoven fabric of the present invention and the prior art at different fabrics comprising microfibers that it is manufactured using meltblowing bonding layer, the microfibers of the different properties of the glue layer characteristic of the fiber with the core network. 如按本说明书所述的方法制成具有芯网和胶合层并经过热粘合的布料,就可得到一种具有高强度与重量比值的、良好的表面耐磨牢度和悬垂性的布料。 The method according to the specification of the core is made having a bonding layer and through the web and thermally bonded fabrics, can be obtained, good surface having a high strength to weight ratio abrasion fastness and drape fabric.

在将先有技术的熔喷工艺用于与纤维有关方面时,得到的典型产品是一种直径在1到10微米的微纤维。 In the prior art process for the meltblowing concerned with the fibers, the resulting product is typically microfibers having a diameter of 1 to 10 micrometers. 在给定的网中,纤维的直径是参差的,但为了充分发挥微纤维结构作为良好滤料的优点,往往必须将纤维的直径保持在很小。 In a given network, the diameter of the fibers are mixed, but in order to give full play to the advantages of microfiber structures as good filter, the diameter of the fiber often must be kept low. 因此通常是用平均直径小于5微米,有时甚至小于2微米的纤维来生产纤维网。 Thus typically having an average diameter of less than 5 microns, and sometimes even less than 2 microns to produce fiber web. 在这种先有技术的工艺中,制造出来的纤维的典型长度为5至10厘米。 In this prior art process, typical length manufactured fibers is 5 to 10 cm. 在前面对于采用先有技术生产的布料的评议中曾提到,用这样的纤维做成的网具有很低的强度和耐磨牢度。 For use in front of the prior art reviewed fabric produced it was mentioned, made with such a fibrous web having a low strength and fastness to rubbing. 这样的网的强度和耐磨牢度主要来源于纤维在沉降于传送带面上时纤维间的粘合。 Such network strength and abrasion fastness fibers settling mainly from the conveyor belt surface adhesion between the fibers. 一定程度的表面粘合可能存在于纤维间,因为在熔喷技术的常规生产方式中,纤维在沉降到传送带面上时还没有完全固化,它们的半熔融状态的表面在交叉接触的点上会粘合起来。 Some degree of surface tackiness that may exist between the fibers, as in a conventional production technology meltblown fibers not fully cured to the conveyor belt surface in the settling Shihai, the surface thereof will be semi-molten state at the crossing point of contact glue together. 这种粘合过程有时被称为“自身粘合”。 This bonding process is sometimes referred to as "self-adhesive." 自身粘合的程度越高,网的一体化的程度也越高。 The higher the degree of self-adhesive, the higher the degree of integration of the network. 但如果这类热塑性的纤维的自身粘合程度过高,则该纤维网将发硬,变得粗糙并相当脆弱。 However, if the degree of such self-adhesive thermoplastic fibers is excessively high, the web will be stiff, fragile and become rough. 这种未经压花的网的强度是不足以用于例如医用布料那样的实际用途的。 The strength of this non-embossed web is insufficient for practical use, for example, as medical fabrics. 将这些纤维网进行热粘合一般可以提高它们的强度和耐磨牢度的,但正如前面已讨论过的,如果不加入表面增强成分或粘合剂的话,迄今还不能用熔喷的微纤维生产出具有高的表面耐磨牢度的布料来,尤其是不能生产出可用于手术衣、擦洗服和外科罩单等的布料来。 These thermally bonded webs can generally improve strength and abrasion fastness thereof, but as previously discussed, if the component or without the addition of surface enhanced adhesive, then, can not so far meltblown microfibers producing a fabric having a high fastness to surface abrasion, in particular fabric can not be used to produce a surgical gown, surgical scrub suit, and the like to a single cover.

在本发明的最佳布料方案中,在形成芯网时,其纤维比先有技术的纤维为长。 In the preferred embodiment fabric of the present invention, in forming the core web, which fibers than prior art long fibers. 测定纤维长度时使用矩形的钢丝框架每个的长度为5厘米到50厘米,每隔5厘米为一档。 When measured using a rectangular steel frame length of each fiber length of 5 cm to 50 cm, a file every 5 centimeters. 框上绷上双面有粘膜的胶粘带,用来粘住并收集气流中的纤维。 Stretched on both sides of the upper frame mucosal adhesive tape, used to adhere the fibers and collect in the gas stream. 测量时将一个钢丝框在靠近于成网传送带处(而不是靠近熔喷喷咀处)以垂直于气流的方向快速穿过气流。 The wire frame in a proximity to the laying belt (rather than near the meltblown nozzle) perpendicular to the direction of airflow through the airflow rapid measurement. 各个框架依次取样,然后点数每种长度的框架上粘住的纤维数并估计出纤维的平均长度。 Sequentially sampling each frame, then the number of points the number of fibers stick to each length of the upper frame and to estimate the average length of the fibers. 如果大部分纤维都长于10厘米,则其平均长度至少是大于10厘米,或者更好些,是大于20厘米的,以此形成的网在压花后将具有很好的强度而仍然保留着用作医用布料的理想特性。 If the majority of the fibers are longer than 10 cm, the average length is at least greater than 10 cm, or better, greater than 20 cm, thereby forming a web having good strength after embossing as still retains a medical ideal characteristics of the fabric. 当平均纤维长度达到25至50厘米时,可以得到具有高度理想特性的布料。 When the average fiber length of 25 to 50 cm to reach can be obtained fabric having highly desirable characteristics. 为了保持微纤维抗拒液体渗透的潜力,必须保持纤维的直径很小。 In order to maintain the potential of the microfibers to resist liquid penetration, it must be kept very small diameter fibers. 要取得好的斥液性,需要保持本方案的芯网内纤维的平均直径在7微米以下,其中至少80%的纤维的直径应在7微米以下,最好是至少90%的纤维的直径应在7微米以下。 To obtain a good liquid repellency diameter, the average diameter of the program need to maintain the core in the fiber web 7 m or less, wherein the diameter of at least 80% of the fibers should be 7 microns, preferably at least 90% of the fibers should be 7 microns. 纤维直径如具有较窄的分散度则可以提高本发明所具有的各项特性之间的独特的平衡性的潜力。 The diameter of the fibers have a narrow dispersion degree can be increased potential for unique balance between the present invention has various properties. 虽然可以用平均直径大于7微米的纤维制造出具有很高强度的布料,但这样的布料的斥液性将会受到牺牲,因而也生产不出具有高度斥液性的轻质布料。 Although the fibers may be greater than an average diameter of 7 microns produced fabric has high strength, but such liquid repellency of the cloth would be sacrificed, and thus do not produce a high degree of liquid repellency of lightweight fabric.

如果熔喷纤维网在形成过程中其自身粘合的程度很低,具有很少或没有一体性,则将其压花后形成的布料将比初始强度高的网制成的布料具有高得多的强度,外观也较好。 If the degree of meltblown web during formation of the adhesive itself is very low, with little or no integrity, the cloth will be formed after the embossing of the fabric than the high initial strength of the web has made much higher strength, good appearance. 就是说,具有上述纤维尺寸的强度最低的未经压花的网可以制成强度最高的压花布料。 That is, the above-described fiber size having the lowest strength web may be made without embossed highest intensity embossed fabric. 纤维间的初始粘合程度越高,制成的布料就越硬、越脆弱,因而其抓样抗拉强度和抗撕破强度都较低。 The higher the level of initial adhesion between fibers, fabrics made of the harder, more fragile, and thus its grab tensile and tear strength are low. 降低自身粘合程度,压花后制成的布料不但有高强度,而且更柔软,更有悬垂性。 Reduce their degree of adhesion, the embossed fabric made of not only high strength, but also softer, more drape. 由于未经压花的网的一体性较低,可以用条样抗拉强度试验来测定其强度。 Since the non-embossed sites of one lower strip can be used to measure the strength of tensile strength test samples. 其方法是用一条2.54厘米宽的条状试样夹在至少也有2.54厘米宽的试样夹具内进行试验(ASTM D1117号标准)。 Which method is to use a 2.54 cm wide strip specimen is clamped there at least within 2.54 cm wide specimen test jig (ASTM D1117 standard number). 现用技术生产出来的熔喷布料,其靠自身粘合的试样的经向条样强度一般大于压粘后强度的30%,往往高达70%或更高。 TECHNICAL now produced meltblown fabric, which was bonded to itself by the sample to the strip-like strength is generally greater than 30% after the compression bonding strength, often as high as 70% or more. 就是说,其自身粘合的强度在压粘后布料的强度中占了很高的份额。 That is, the adhesive strength of its own account for a high share of the strength after press-bonding of the fabric. 用本发明的工艺生产的布料其芯网的自身粘合仅提供压粘后布料强度的30%以下,更好的是10%以下。 Self-adhesive produced by the process of the present invention, a core network fabric provides only 30% of the strength after press-bonded fabric or less, more preferably 10% or less.

例如,用先有技术以尼龙-6为原料熔喷成的网的重量约为50克/米2,它的经向条样抗拉强度为10到20牛顿。 For example, in the prior art as a raw material of nylon-6 melt-blown web to a weight of about 50 g / m 2, its spline warp tensile strength of 10 to 20 Newtons. 本发明的最佳方案制成的布料,其未经压花的芯网的条样抗拉强度必须保持在10牛顿以下,最好是保持在5牛顿以下时才能取得本发明的最大好处。 Best aspect of the invention made of cloth, which is used without embossed strip-like tensile strength of the core network must be maintained at 10 Newton or less, in order to achieve the maximum benefit of the invention is best when held at 5 Newtons or less. 换言之,生产和收集到的长纤维具有较低的纤维间粘合程度、单根纤维强度较高,就可挖掘出纤维本身内在的强度。 In other words, the production and collection of long fibers having a low degree of adhesion between fibers, high single fiber strength, the fibers themselves can be excavated intrinsic strength.

虽然必须使芯网中纤维的初始粘合程度很低并且使80%的纤维的直径都小于7微米,但这样的纤维网经过压花后并不具有很高的表面耐磨牢度,因此往往需要在这样的布料表面加入一种化学粘合剂来提高它的耐磨牢度。 Although the extent necessary to very low initial adhesion the fiber network and the core diameter of the fibers is 80% less than 7 microns, but this is not the web after embossing has a high surface abrasion fastness, so often in such a fabric surface needs a chemical binder is added to improve its abrasion fastness. 但加入这样的粘合剂会带来损害布料悬垂性的付作用,因此其加入量必须保持在最低限度。 But adding a binder such side effects will bring damage to the fabric drape, so the amount must be kept to a minimum. 在实际应用中仅加入能够维持其具有足够悬垂性的粘合剂剂量时,它仅能提供尚可满意、但不是很高的耐磨牢度。 When a binder is added only to maintain its dose has sufficient drapability in practical applications, it is acceptable to provide only satisfactory, but not high abrasion fastness.

在本发明的布料上,可以通过在芯网的一面或两面加上一层由微纤维组成的表面胶合层来避免添加粘合剂及其带来的付作用。 In the fabric of the present invention can be produced by adding one or both surfaces of a layer of glue microfibers and a binder is added to avoid side effects caused in a core network. 胶合层内纤维的平均直径大于8微米,其中75%的纤维的直径至少有7微米。 The bonding layer is larger than the average fiber diameter of 8 microns, wherein 75% of the diameter of the fibers of at least 7 microns. 此外,在最佳实施方案中,其胶合层具有较高的纤维间初始粘合程度。 Further, in the preferred embodiment, which bonding layer having an initial degree of adhesion between the higher fiber.

概括地说,根据本发明制成的最佳布料与现用技术生产的常规的熔喷纤维网相比,其特征在于前者的芯网的纤维具有较长的平均长度,较低的纤维间粘合程度,较高的单线强度和分散带较窄的较细的纤维直径,从而具有较高的抗拒液体渗透能力,它还有至少一层由较粗直径的纤维组成的、最好具有较高的纤维间粘合程度的胶合层。 In summary, the present invention is best made of cloth compared with conventional meltblown webs produced according to the techniques currently used, wherein the fibers of the core web former having a longer average length of the fibers between the lower viscosity together degree, higher strength and finer single wire filament diameter distribution to a narrow band, so as to have a high capacity to resist liquid penetration, it has a diameter of at least one layer composed of coarse fibers, preferably having a high the degree of inter-fiber bonding glue layer.

取得本发明的最佳布料的理想的芯网和胶合层特性的方法建筑于控制工艺流程中的一些关键性的变量,以取得理想的纤维、网层以及布料的特性。 Best fabric of the present invention over the method of construction of the core network and the control characteristics of the glue layer a number of key process variables in order to achieve the desired fiber, web layer and fabric properties. 这些变量包括挤压温度、一次空气流量及温度、二次空气流量以及成网距离(从模具到接收器)。 These variables include extrusion temperatures, primary air flow and temperature, secondary air flow rate, and laid a distance (from the receiver to the mold). 这些变量对于具有关键性的理想的网层以及胶合层特性的影响说明如下:对于芯网和胶合层来说,如果将进入模具的熔液的温度保持得比先有技术的工艺要求低些,例如低10至35℃,单根纤维的强度就可以有大幅度的提高。 These variables have the desired effect for the network layer, and key characteristics of the glue layer is described as follows: glue layer to the core network and for, if the temperature of the molten metal into the mold is kept lower than the prior art process these requirements, for example, by 10 to 35 ℃, the strength of the individual fibers can have significantly improved. 一般在本发明的工艺中进入模具的熔液温度比所用聚合物的熔点只高出不超过75℃左右。 Usually the melt temperature into the mold in the process of the present invention than the melting point of the polymer is not only higher than about 75 ℃.

在形成芯网时,一次空气的流速和温度以及二次空气的流速和温度必须调整到能够取得该给定聚合物的纤维在不拉伸条件下的最高强度。 In forming the core web, flow rate and temperature of the air flow rate and temperature of the primary and the secondary air must be adjusted to the highest intensity can be obtained for a given polymer fibers without stretching conditions. 本发明中二次空气使用的高流速使得芯网的纤维在散射的过程中延长了时间和路程,因而有助于提高纤维的强度。 The present invention uses high velocity secondary air so that the fiber core web extended time and distance during the scattering, and thus help improve the strength of the fiber. 在生产胶合层纤维时二次空气不起主要的作用,最好是不用二次空气以使在形成最佳的胶合层时纤维之间有较高的初始粘合程度。 In the production of glued layers of fiber secondary air not play a major role, preferably the secondary air is not so optimal in forming the glue layer has a higher initial degree of adhesion between the fibers.

在芯网和表面胶合层内的纤维长度受一、二次空气流速、聚合物的递降分解程度以及空气流场均匀度的影响,其中空气流的均匀度具有最关键的重要性。 Fiber length in the core web and the surface layer is glued by a secondary air flow rate, degree of degradation is uniform and the influence of the air flow field of the polymer, wherein the uniformity of air flow with the most crucial importance. 很重要的一点是要维持气流和纤维流的高度均匀性,要避免大幅度的扰动、涡流、分条以及其他流态上的不规则性。 It is important to maintain a uniform gas flow and high fiber stream, to avoid large disturbances, vortex, slitting and other irregularities on the flow regime. 使用高流速的二次空气有助于控制空气/纤维流束,它冷却纤维并保持纤维分子的排列方向的一致性,生产出强度较高的纤维,使之具有抗拒被不均匀气流拉断的更大能力。 The use of high velocity secondary air helps to control the air / fiber stream, it cools the fiber arrangement direction and consistency of the fiber molecule to produce high strength fibers, so as to have non-uniform resistance to airflow is pulled off greater capacity.

为了将芯网的纤维沉积在成网传送带上以形成网状并具有较低的条样抗拉强度,成型气流和成型距离显然具有重要性。 To the core web fibers are deposited on a conveyor belt into the web and to form a mesh-like article having a tensile strength lower molding molded from the gas stream and the apparent importance. 在本发明的工艺中,成型距离一般在20至50厘米之间。 In the process of the present invention, the forming distance is generally between 20 and 50 cm. 首先,为了使芯网具有最低的纤维间粘合程度,纤维在到达成网传送带时应已相当地凝固,表面不发粘。 First, in order that the core web has a minimum degree of adhesion between fibers, the fibers have solidified to a considerable net conveyer should be reached, the surface is not sticky. 使纤维有凝固的时间,可以将成网传送带和接收器从模具移开些。 The fiber has solidified time, can become the net conveyer and the receiver is removed from the mold more. 但如距离过大,即大于50厘米时,就难于维持空气/纤维流动的均匀性,从而可能出现“搓绳”现象。 But as the distance is too large, i.e., greater than 50 cm, it is difficult to maintain the uniformity of the air / fiber flow, which may be a "twine" phenomenon. “搓绳”是一种个别一些纤维在气流中绞合在一起而形成一束粗纤维的现象。 "Twine" is a number of individual fibers twisted together to form the gas stream in the crude fiber bundle of the phenomenon. 过分的搓绳将会降低生产出来的布料的抗拒液体渗透的性能,也会影响其外观。 Excessive twine will reduce production out of the fabric to resist liquid penetration performance, will affect its appearance. 高度均匀的一次空气流可以改善纤维散开的机会和相对地延长其不发生搓绳现象的距离。 Highly uniform primary air flow may improve the chance of spreading the fiber and its relatively elongated phenomenon does not occur from the twine.

一次空气容积也是一个重要的因素。 Primary air volume is also an important factor. 在给定的聚合物流量及成型长度条件下必须使用足够的一次空气容积,以使纤维在空气/纤维流中能很好地分开,并将搓绳现象降至最低限度。 It must be a sufficient volume of air at a given polymer flow rate and forming length condition, so that the fiber can be well separated in the air / fiber stream, and minimize the phenomenon of twine.

二次空气的使用对于在不产生搓绳现象条件下在芯网内取得较低的纤维间粘合程度也是重要的。 Secondary air is also important to achieve a low degree of adhesion between the fibers within the core network at no twine phenomenon conditions. 如同前面已注意到的,高速的二次空气流对改善空气/纤维流动均匀性是有效的。 As previously noted, the high-speed air flow to improve the secondary air / fiber flow uniformity is effective. 因此,它提高了在不产生不合要求的搓绳现象的条件下延长成型距离的可能性。 Thus, it increases the possibility of extending the distance formed without generating undesirable phenomena twine claims. 此外,由于二次空气是处于室温下的,需要时也可以更低些,它可以用来在较短的时间内冷却并凝固纤维,从而避免使用长而有害的成型距离的必要性。 Further, since the secondary air is at room temperature, may be needed some lower, it can be used to cool in a short time and solidified fibers, thereby avoiding the necessity of using hazardous shaped long distance. 为了使二次空气系统能对流动的均匀性和冷却作用以及纤维的速度降低率具有影响,它应有足够的流速,而其流量也不致完全被一次空气所淹没。 In order to make the secondary air system to have an influence on flow uniformity and cooling speed of the fiber and the reduction rate, it should have a sufficient flow rate, and the flow is not completely overwhelmed by activated primary air. 在本工艺中,二次空气的流速取30米/秒至200米/秒或更高些可以有效地得到期望的气流特性。 In the present process, the flow rate of secondary air is taken 30 m / s to 200 m / sec or higher can be efficiently obtained flow characteristics desired. 显然,可以用各种方法和组合方式来协调一、二次空气的流量、温度和成型距离以取得在未经压花的芯网内纤维之间的低粘合程度。 Obviously, various methods and compositions may be used to coordinate a manner, the secondary air flow rate, temperature and the degree of forming in order to obtain from a low adhesion between the fibers in the core network without embossing. 具体工艺参数决定于使用的聚合物、模具的设计及其空气系统、产品率以及要求的产品性能。 Specific process parameters depend on the polymer used, mold design and air systems, the product and the requirements of product performance.

未经压花的芯网或多层未经压花的芯网必须粘合起来以形成本发明的最佳布料。 Non-embossed multilayer core network or core network must not embossed bonded together to form the fabric of the present invention is preferred. 使用热粘合技术被认定是最有利的方式。 Was identified using the thermal bonding technique is the most advantageous way. 在本发明的一个最佳方法中,芯网及几层芯网的热粘合以及胶合层同芯网的热粘合是结合起来在一道热压花工序中完成的。 In a preferred method of the present invention, thermal bonding, and thermal bonding with the bonding layer of the core network and the core network core network layers is done in a combined heat embossing step. 具有加热和加压功能的超声波或机械压花滚筒系统都是可用的。 Having a heating and pressing function of an ultrasonic or mechanical embossing roll systems are available. 对本发明来说,建议采用机械压花系统,其中一个位于布料一侧的滚筒的表面是镌刻的,位于布料另一侧的滚筒的表面是平的,以此来取得多点粘合的效果。 For purposes of the present invention, is recommended a mechanical embossing system in which a cylinder is located on the side surface of the cloth engraved drum surface on the other side of the fabric is flat, in order to achieve the effect of multi-point bonding. 为了避免布料上出现“针孔”,在上、下滚筒之间留有0.01到0.02毫米的间隙较为理想。 In order to avoid "pinholes" appears on the fabric, between the upper and lower roller leaving a gap of 0.01 to 0.02 mm is preferable. 对于本发明的布料所考虑的用途来说,布料面上压花的总面积应在5%至30%之间,最好是在10%至20%之间。 For use according to the present invention, the cloth is considered, the total surface area of ​​embossed fabric should be between 5-30%, preferably between 10-20%. 在一个说明本方案的例子中,压花的面积是18%,压花的图案是0.76毫米×0.76毫米的菱形,每平方厘米的滚筒面上共有31个菱形花纹。 In an illustrative example of the present embodiment, the embossed area is 18% of the embossing pattern is 0.76 mm × 0.76 mm diamond, diamond pattern total of 31 per square centimeter surface of the drum. 压花使用的具体图案并非关键,任何占布面5%至30%面积的图案都可使用。 Specific embossing pattern used is not critical, any accounting cloth 5 to 30% of the area of ​​the pattern can be used.

本发明的原理可用于任何市售的树脂,诸如聚丙烯、聚乙烯、聚酰胺、聚酯或任何聚合物或混合的聚合物,只要它们能被熔喷成纤维,都可以使用。 The principles of the present invention can be used in any commercially available resins, such as polypropylene, polyethylene, polyamide, polyester or any polymer or polymer mixture, so long as they can be meltblown fibers, may be used. 发现使用聚酰胺,尤其是尼龙-6(聚己内酰胺)特别有利于得到外观好、受到钴放射线照射不易变质、特性之间平衡良好以及加工方便等优点。 Found polyamide, particularly nylon-6 (poly-caprolactam) is particularly advantageous to obtain a good appearance, non-perishable by cobalt irradiation, excellent balance between properties and easy processing advantages.

前已提到,本发明的最佳布料的基本重量是14至85克/米2。 Mentioned before, the optimal basis weight of the cloth of the present invention is 14-85 g / m 2. 胶合层如是分开形成的,其基本重量约为6克/米2左右,如是同时形成的,则其基本重量约为3克/米2左右。 Bonding layer formed separately from the case, a basis weight of about 6 g / m 2 or so, while forming the case, the basis weight of about 3 g / m 2 or so. 一般胶合层的基本重量不宜超过10至15克/米2,因为胶合层的基本重量大了,就得减少芯网的基本重量以保持所要求的布料基本重量。 The basic weight is generally glue layer should not exceed 10 to 15 g / m 2, because of the large basic weight of the bonding layer, have substantially reduced the weight of the core network to maintain the basis weight of fabric desired. 这种布料的最小抓样抗拉强度与重量的比值大于0.8牛顿/克·米2,其最小埃氏抗撕破强度与重量的比值大于0.04牛顿/克·米2,其湿态及干态表面耐磨牢度大于15周起团。 Minimum tensile strength of this fabric weight of grab ratio greater than 0.8 N / m 2 · g, the minimum Erichsen anti tear strength to weight ratio greater than 0.04 N / m 2 · g, which is wet and a dry state surface from abrasion fastness of greater than 15 weeks group. 对于要求高强度和高耐磨牢度的医用布料,最佳的布料的基本重量不大于60克/米2,最小抓样抗拉强度不小于65牛顿,最小埃氏抗撕破强度不小于6牛顿,干态表面耐磨牢度至少达到40周起团和湿态表面耐磨牢度至少达到30周起团。 For the high strength and high abrasion fastness medical fabric, cloth optimum basis weight is not more than 60 g / m 2, a minimum tensile strength of not less than 65 grab Newtons, minimum tear strength of not less than Anti Erichsen 6 Newton, fastness to dry surface abrasion resistance of at least 40 weeks from the surface groups and wet abrasion fastness of at least 30 weeks starting group.

应理解应用本发明制造的纤维、网、或布料可以用多种方式结合起来,可以同具有不同性能的其他纤维、网、布料结合以形成具有特别指定的性能的产品。 Application of the present invention to be understood that the fibers produced, mesh, or cloth may be combined in various ways, the same may have other different properties of the fibers, mesh, fabric combined to form a product having a specified performance.

下面提供一些例子,目的是进一步说明本发明;在任何情况下它们不代表本发明内容或范围的限度。 The following provide some examples, in order to further illustrate the invention; they do not represent the limits of the content or scope of the present invention in any case.

例1在下例中,表内列举的第1、2、3号网是在表Ⅰ所列的条件下生产的。 Example 1 In the following example, the net 1,2,3 listed in the table No. is produced under the conditions listed in Table Ⅰ.

表Ⅰ生产熔喷尼龙网的工艺条件网号工艺条件 1 2 3挤压机温度-入口处 ℃ 260 232 260挤压机温度-出口处 ℃ 275 275 300滤网/搅拌器温度 ℃ 275 275 287模具温度 ℃ 287 265 300一次空气温度 ℃ 287 287 335一次空气流速 米/秒 290 255 221聚合物流量克/分-孔-10.14 0.14 0.28模具空气间隙 毫米 1.14 1.14 1.14模具错位距离-负错位 毫米 1.02 1.02 1.02二次空气流速 米/秒 30 30 30基本重量克/米252 44 6平均纤维直径 微米 3.6 4.1 9.81号网的生产条件与共同未决申请(JSU 58)中所列的相仿,以期在成型的布料上取得阻拦和强度性能之间的最佳协调。 Table network conditions conditions No. Ⅰ production meltblown nylon mesh 123 Extruder Temperature - entrance ℃ 260 232 260 Extruder Temperature - at the outlet of the filter ℃ 275 275 300 / stirrer mold temperature ℃ 275 275 287 primary temperature ℃ 287 265 300 287 287 335 air temperature primary air deg.] C flow rate m / sec 290 255 221 polymer flow g / min - 0.28 -10.14 0.14 air gap die aperture 1.14 1.14 1.14 mm offset from the mold - negative mm 1.02 1.02 1.02 misalignment 30 30 30 basis weight of the secondary air flow rate m / sec g / m 252 446 3.6 4.1 average number fiber diameter of 9.81 microns web production conditions and co-pending application (JSU 58) listed in similar view to the forming fabrics the best coordination between the blocking and strength properties. 2号网的生产条件作了些修改,可以生产出具有更高强度、但阻拦性能稍有降低的布料,这一效果是通过采用比1号网较低的模具温度和一次空气流速取得的。 No. 2 production conditions some changes to the network can be produced with higher strength, but stop slightly lower performance fabrics, this effect is achieved through the use of the network than 1 and a mold temperature lower air flow rate. 生产3号网时提高了聚合物的流量并进一步降低一次空气流速以取得平均纤维直径为9.8微米,其中80%的纤维直径大于7微米的网层。 Improve the production flow rate of the polymer network 3 and further reducing the flow rate of primary air to obtain the average fiber diameter of 9.8 microns, wherein 80% of the fiber diameter greater than 7 microns mesh layer. 此外,模具温度也提高了以使3号网纤维间的粘合程度有所提高。 Further, the mold temperature is also increased to make the degree of adhesion between the fiber web 3 is improved. 表Ⅱ列举了用1、2、3号网生产出的经过压花的布料的物理特性。 Ⅱ table lists the physical properties of the fabric mesh with 1,2,3 produced through embossing. 表Ⅲ列出了生产具有表Ⅱ所列物理特性的布料所使用的工艺条件。 The process conditions are listed in Table Ⅲ production of fabrics having physical properties listed in Table Ⅱ being used.

表Ⅱ热压花的熔喷尼龙的说明及其物理特性布料号特性 4 5 6 7网层组合-第1层 1号网 2号网 3号网 3号网-第2层 - - 2号网 2号网-第3层 - - - 3号网总基本重量(克/米2) 52 44 50 56抓样抗拉强度与重量比值(牛顿/克·米2)经线方向 2.06 2.77 2.55 2.48纬线方向 1.53 1.94 1.95 1.90静水压头(厘米水柱) 49 36 39 39耐磨牢度(周数)第一面 干态-起团 15 15 40 50-磨穿孔 100 100 100 100湿态-起团 15 15 30 35-磨穿孔 100 100 100 100第二面 干态-起团 15 15 15 50-磨穿孔 100 100 100 100湿态-起团 15 15 15 35-磨穿孔 100 100 100 100 Description and characteristic physical properties of the meltblown nylon fabric Number Table Ⅱ hot embossing 4567 network layer composition - the first layer 1 network web 2 web 3 web 3 - Layer 2 - - 2 Network network 2 - layer 3 - - - 3 total net basis weight (g / m 2) 52445056 grab tensile weight ratio (N / m 2 · g) 2.06 2.77 2.55 2.48 in the warp direction weft direction 1.53 1.94 1.95 1.90 hydrostatic head (cm of water) 49363939 abrasion fastness (weeks) dry first surface - from Mission 15154050- perforated mill wet 100 100 100 100 - 15 15 from Mission 3035- 100 100 100 100 perforated grinding the second surface dry - from Mission 15151550- perforated mill wet 100 100 100 100 - from Mission 15151535- perforated mill 100 100 100 100

表Ⅲ熔喷尼龙热压花的工艺条件布料号工艺条件 4 5 6 7压花面积占的比例(%) 18 18 18 18油温 (℃)顶部镌刻滚筒 126 122 12 121底部光面滚筒 126 122 122 122滚筒间的压紧力(牛顿/厘米) 685 685 685 685网的移动速度(米/分) 15 9 9 9从表Ⅱ可知,5号布料的抓样抗拉强度较4号布料高,但其阻拦性能有所降低,这从静水压头的数据上可以看出;耐磨牢度则没有变化。 Ratio (%) Process Conditions Table Ⅲ meltblown nylon cloth hot embossing process conditions No. 4567 embossed area occupied 18,181,818 oil (℃) engraved on the top of the drum bottom surface 12612212121 drum 126122 122122 pressing force (N / cm) between the moving speed of the drum 685 685 685 685 net (m / min) 15 999 ⅱ apparent from table No. 5 tensile strength than the fabric grab high cloth 4, but its blocking properties decreased, as can be seen from the data of the hydrostatic head; no change in abrasion fastness. 6号和7号布料由于加了胶合层(3号网)而使它们的耐磨牢度有所改进。 6 and 7, since the addition of the cloth bonding layer (3 mesh) to render them improved abrasion fastness. 但6号和7号布料由于与胶合层3号网结合,其标准化的抓样抗拉强度依次有所降低,这是因为胶合层增加了布料的重量,但按单位重量增加的抗拉强度没有2号网那样多。 6 and 7, but since the cloth bonding layer 3 in combination with the network, which in turn normalized Grab tensile decreased, because the bonding layer increases the weight of the fabric, but the tensile strength per unit weight is not increased No. 2 network as much. 3号网构成的胶合层将6号和7号布料的静水压头数据略有提高,而表面耐磨牢度则提高得很显著。 Bonding layer 3 network configuration data of the hydrostatic head of the fabrics 6 and 7 increased slightly while the surface abrasion fastness is increased very significantly.

干态表面耐磨牢度的测量方法如下:被试的布料样置于试验机底板上的一块泡沫垫上,一张7.6厘米×12.7厘米的标准利特隆(Lytron)面的砂布装在试验机的顶板上并与试验布样接触,布样的经线方向同砂布的经线方向平行。 Measurement dry surface abrasion fastness is as follows: the test sample cloth was placed on a foam pad tester base plate, an abrasive cloth 7.6 cm × 12.7 cm gauge Lite Long (Lytron) mounted on the surface of the testing machine on the top plate and in contact with the test sample cloth swatches with the warp direction parallel to the warp direction of the polishing pad. 在顶板上压一块1.1公斤的重量,然后将底板以固定的1.25转/分的转速转动,每转一圈称为“1周”。 A ceiling plate laminated on the weight of 1.1 kg, and the bottom plate at a fixed 1.25 rev / min rotation speed, each turn referred to as "one week." 转完第一轮5圈以后用放大镜检视试样布的表面,以后每转5圈检视一次,记录下达到将试样布磨起团所需的周数,以及将其磨出孔来的周数。 End surfaces of the first turn after 5 turns round with a magnifying glass to view a sample cloth after 5 turns per revolution of view once the sample reaches recorded cloth the required grind several weeks group, and grind its peripheral holes number. “起团”的定义为布面上的纤维脱落并开始形成团团或珠子。 The definition of "play group" is off and the surface of the fiber cloth begins to form balls or beads. 一共对4个布样进行试验,取其达到磨起团和磨出孔来的平均周数作为报告上的数据。 A total of four swatches were tested, whichever weeks to an average grind grind holes and groups as reported data.

湿态表面耐磨牢度试验采用相似的方法,其不同处是:布样固定到试验机的底板上以后在其面上滴5滴纯水,顶板上压的重量仅0.2公斤。 Wet surface abrasion fastness test using similar methods, which are differences: After swatches fixed to the bottom plate of the tester water drops 5 drops on its surface, the weight of pressure on the top plate only 0.2 kg.

例2在下面的例子中,表Ⅳ列的是第8、9、10和11号网的生产条件。 Example 2 In the following example, the table production conditions Ⅳ column is 9, 10 and 11 mesh.

表Ⅳ生产熔喷尼龙基网的工艺条件挤压机温度-入口处 ℃ 246 232 232 260挤压机温度-出口处 ℃ 274 274 274 301网号工艺条件 8 9 10 11滤网/搅拌器温度 ℃ 274 274 274 301模具温度 ℃ 274 265 265 301一次空气温度 ℃ 309 285 285 331一次空气流速 米/秒 299 252 191 299聚合物流量克/分·孔-10.14 0.14 0.28 0.28模具空气间隙 毫米 1.14 1.14 1.14 1.14模具错位距离-负错位 毫米 1.02 1.02 1.02 1.02二次空气流速 米/秒 30 30 30 0 Table Ⅳ meltblown process conditions producing nylon-based net extruder temperature - entrance ℃ 246 232 232 260 Extruder Temperature - outlet mesh ℃ 274 274 274 301 No. 891 011 process conditions strainer / agitator temperature ℃ 274274274301 mold temperature of primary ℃ 274 265 265 301 309 285 285 air temperature 331 primary deg.] C air flow rate m / sec 299 252 191 299 polymer flow g / min per hole die -10.14 0.14 0.28 0.28 1.14 1.14 1.14 air gap 1.14 mm offset from the mold - negative mm 1.02 1.02 1.02 1.02 displacement of the secondary air flow rate m / sec 3,030,300

(紧接上页表Ⅳ)基本重量克/米252 42 6 6平均纤维直径 微米 8.2 8.8第8、9、10和11号网的工艺条件同共同未决申请(JSU58)中所列的工艺条件相符。 Process conditions listed (the immediately preceding page table Ⅳ) basis weight g / m 2524266 8.2 8.8 micron average fiber diameter of conditions 9, 10 and 11 mesh with the co-pending application (JSU58) in match. 8号网的工艺条件是为了在成型的布料上取得阻拦特性和强度之间的最佳协调。 8 network conditions in order to achieve the best coordination between the blocking properties and strength in the formed fabric. 9号网的生产条件作了些修改,它比8号网降低了模具温度和一次空气流速以生产出强度较高但阻拦特性稍差的布料。 9 production conditions some changes to the network, which network reduces the temperature of the mold and the primary air flow rate than No. 8 to produce a higher intensity but slightly inferior blocking characteristics of the fabric. 10号网是在增加聚合物流量并进一步降低一次空气流速条件下生产出纤维平均直径约为9微米,其中80%的纤维直径大于7微米。 No. 10 in the network is to increase polymer flow and further reduce the primary air flow conditions produced an average fiber diameter of about 9 microns, 80% of the fiber diameter greater than 7 microns. 9号和10号网所用的模具温度是一样的。 9 and a mold temperature of 10 mesh used is the same. 11号网的生产条件基本上同3号网相似,但不用二次空气以提高其纤维间的初始粘合程度。 No. 11 mesh production conditions substantially similar to the same network 3, but without the secondary air to increase its initial degree of adhesion between the fibers. 11号网所用的模具温度也比10号网提高了以提高其纤维间的初始粘合程度。 A mold temperature of 11 mesh than the number used to improve the network 10 to improve its initial degree of adhesion between the fibers.

下面的表Ⅴ列出了用第8、9、10和11号网在表Ⅵ所列的条件下制成的压花布料的物理特性。 The following table lists the physical characteristics of embossed Ⅴ cloth with 9, 10 and 11 mesh made under the conditions listed in Table Ⅵ. 13号布料是12号布料在每面加上3克/米2的由美国道化学公司(DOW Chemical Co)生产的Primacor 4990粘合剂,后者是一种80/20比例的乙烯和丙烯酸的共同聚合物。 13 is a cloth fabric 12 together at each side by the Dow Chemical Company (DOW Chemical Co) produced Primacor 4990 adhesive 3 g / m 2, which is common ethylene and acrylic acid in a ratio of 80/20 polymer.

表Ⅴ热压花的熔喷尼龙的说明及其物理特性布料号特性 12 13 14 15网层组合-第1层 8号网 粘合剂 10号网 11号网-第2层 - 8号网 9号网 9号网 Description and characteristic physical properties of the meltblown nylon fabric Number Table Ⅴ hot embossing plies 12 13 14 15 composition - the first layer 8, adhesive net mesh 11 mesh 10 - Layer 2 - 9 8 mesh No. 9 mesh network

(紧接上页表Ⅴ)-第3层 - 粘合剂 10号网 11号网总基本重量(克/米2) 52 58 54 54抓样抗拉强度(牛顿)经线方向 94.1 103 94.0 108纬线方向 71.7 71.9 58.9 69.1静水压头(厘米水柱) 41 38 37 38耐磨牢度(周数)第一面 干态-起团 5 15 40 45-磨穿孔 100 100 100 100湿态-起团 5 15 30 40-磨穿孔 100 100 100 100库氏悬垂系数(%) 46 65 45 44表Ⅵ熔喷尼龙网热压花的工艺条件布料号工艺条件 12 14 15压花面积占的比例(%) 18 18 18油温 (℃)顶部镌刻滚筒 104 106 93底部光面滚筒 97 99 95滚筒间的压紧力(牛顿/厘米) 685 685 685网的移动速度(米/分) 9 9 9 (Page table immediately Ⅴ) - Layer 3 - 11 binder No. 10 mesh net total basis weight (g / m 2) 52585454 Grab tensile (N) in the warp direction weft yarns 108 94.1 103 94.0 71.7 71.9 58.9 69.1 hydrostatic head (cm water column) direction 41383738 abrasion fastness (weeks) dry first surface - from Mission 5154045- perforated mill wet 100 100 100 100 - from group 5 ratio (%) 18153040- 100 100 100 100 perforated mill's library drape coefficient (%) table ⅵ 46654544 meltblown nylon mesh cloth hot embossing process conditions conditions No. 121 415 embossed area occupied 18 18 oil (℃) engraved on the top of the drum surface of the drum bottom 10410693 979995 pressing force (N / cm) between the rollers 685,685,685 web moving speed (m / min) 999

如表Ⅴ所示,13号布料的表面耐磨牢度有所提高,其库氏悬垂系系数大幅度提高了。 FIG, 13, the fabric has improved surface abrasion fastness Table Ⅴ, which library system's drape coefficient greatly improved. 再增加粘合剂的加入量将进一步提高其耐磨牢度,但将进一步对其悬垂性产生不利影响。 Add binder amount will further increase its abrasion fastness, but will further adversely affect their drape.

14号布料比13号的表面耐磨牢度高得多,但没有伴随着悬垂性的丧失。 No. 14 No. 13 than the surface of the fabric abrasion fastness is much higher, but not accompanied by loss of drape. 15号布料在表面耐磨牢度方面比14号又有更多的改进。 More improvements in the surface 15 of the fabric 14 than there abrasion fastness. 据信这一提高是由于11号网内的纤维间初始粘合程度提高了的缘故。 This increase is believed to be due to inter-fiber network in the initial adhesive 11 increases the degree sake.

因此,可以很明显地看出,本发明提供了一种新型的、未增强的熔喷微纤维布料,它具有提高了的表面耐磨牢度以满足上面提出的目的、目标和优点。 Thus, it can be apparent, the present invention provides a new, unreinforced melt-blown microfiber fabric having improved surface abrasion fastness to satisfy the objects, aims and advantages set forth above. 虽然本发明是结合具体的实施方案来进行说明的,显然还可有许多可供选择的其他方案、改进和变型,它们对于熟悉本行业的人在阅读了上面的说明以后将是一目了然的。 Although the present invention is in conjunction with specific embodiments will be described, and obviously may have many other alternative embodiment, modifications and variations which are familiar to the skilled man upon reading the above description of the future will be clear. 因此,所有符合后面权利要求的精神和广泛范围的可供选择的方案、改进及变型,都属于所申请的权利要求的范畴。 Thus, alternatives to the appended claims all eligible spirit and broad scope, modifications and variations fall within the scope of the rights required by the application.

Claims (8)

  1. 1.一种改进的未增强熔喷微纤维布料,所述布料具有改进的表面耐磨牢度,其特征包括:至少一层未增强热塑性熔喷微纤维芯网,所述芯网的最小抓样抗拉强度与重量的比值大于0.8牛顿/克·米2,其埃尔门多夫抗撕破强度与重量的比值大于0.04牛顿/克·米2,所述芯网的基本重量在14克/米2至85克/米2范围内;和在所述芯网上的至少一层未增强表面胶合网层,所述胶合网层由熔喷热塑纤维形成,该纤维平均直径大于8微米,其中75%的纤维直径至少为7微米,具有大于15周起团的湿态和干态表面耐磨牢度,其基本重量在3克/米2至10克/米2范围内,所述至少一层胶合网层直接与所述至少一层芯网连接。 1. An improved unreinforced melt-blown microfiber fabric, said fabric having improved surface abrasion fastness, further comprising: at least one layer of unreinforced thermoplastic meltblown microfibers of the core network, the core network a minimum grab tensile strength ratio of the sample weight is greater than 0.8 N / m 2 · g, which is an anti Elmendorf tear strength to weight ratio greater than 0.04 N / m 2 · g, a basis weight of the core network 14 g / m 2 to 85 g / m 2 within the range; and in the core at least one layer of unreinforced web surface ply glued, the glued ply formed from meltblown thermoplastic fibers, the average fiber diameter of greater than 8 microns, wherein at least 75% of a fiber diameter of 7 micrometers, with greater than 15 weeks from wet and dry surface abrasion fastness group, a basis weight in the range of 3 g / m 2 to 10 g / m 2, at least one ply glued directly connected to the at least one core network.
  2. 2.根据权利要求1所述的布料,其特征在于,所述布料在间断的离散粘合区内用热压法压花,粘合区占布料表面5%至30%。 2. The fabric according to claim 1, wherein said fabric cloth surface representing 5 to 30% in discrete bonding areas with hot embossing method, an adhesive region interrupted.
  3. 3.根据权利要求1所述的布料,其特征在于,所述布料具有至少30周起团的湿态耐磨牢度和至少40周起团的干态耐磨牢度。 3. The fabric according to claim 1, wherein said fabric has at least 30 weeks from dry wet abrasion fastness and fastness to rubbing groups from at least 40 weeks groups.
  4. 4.根据权利要求3所述的布料,其特征在于,其基本重量不大于60克/米,其最小抓样抗拉强度不低于65牛顿,其最小埃尔门多夫抗撕破强度不低于6牛顿。 4. The fabric according to claim 3, characterized in that the basis weight no greater than 60 g / m, the minimum Grab tensile not less than 65 Newtons, a minimum Elmendorf tear strength not anti less than 6 Newton.
  5. 5.根据权利要求1所述的改进的未增强熔喷微纤维布料,其特征在于,所述表面胶合网层的纤维平均直径约为9微米。 5. The improvement according to claim 1 unreinforced melt-blown microfiber fabric, wherein said surface layer is glued web average fiber diameter of about 9 microns.
  6. 6.一种制造具有改进耐磨牢度的熔喷微纤维布料的方法,其特征包括:(1)形成至少一层热塑性熔喷微纤维芯网,其最小抓样抗拉强度与重量的比值大于0.8牛顿/克·米2,其最小埃尔门多夫抗撕破强度与重量的比值大于0.04牛顿/克·米2,其基本重量在14克/米2至85克/米2范围内;(2)在所述芯网上用熔喷热塑性纤维形成至少一层未增强表面胶合网层,所述胶合网层具有较高的初始自身粘合作用,其纤维的平均直径大于8微米,其中75%的纤维直径至少为7微米,所述胶合网层基本重量在3克/米2至10克/米2范围内,其湿态表面耐磨牢度和干态表面耐磨牢度大于15周起团;(3)所述至少一层胶合网层直接与所述至少一层芯网连接。 6. A method of making an improved meltblown microfiber fabric abrasion fastness, further comprising: (1) forming at least one layer of meltblown thermoplastic microfibers of the core web, the weight ratio of the tensile strength of the sample minimum grip greater than 0.8 N / m 2 · g, the ratio of anti minimum Elmendorf tear strength to weight of greater than 0.04 N / m 2 · g, a basis weight of 2-85 g 2 in the range of 14 g / m / m ; (2) forming at least one surface of a non-reinforced bonding layer mesh, the mesh bonding layer has a higher initial adhesion itself, an average fiber diameter of greater than 8 microns, wherein the meltblown web of thermoplastic fibers in the core 75% of a fiber diameter of at least 7 microns, the glued ply basis weight in the range of 3 g / m 2 to 10 g / m 2, the surface thereof wet and dry surface abrasion fastness crockfastness of greater than 15 week of groups; (3) at least one of said at least one cemented mesh layer directly connected to the core network.
  7. 7.根据权利要求6所述的制造具有改进耐磨牢度的熔喷微纤维布料的方法,其特征在于,所述胶合网层的纤维直径平均为9微米。 The method has improved abrasion fastness meltblown microfibers manufacturing a fabric as claimed in claim 6, wherein the fiber diameter of the cemented ply 9 microns on average.
  8. 8.根据权利要求6所述的制造具有改进耐磨牢度的熔喷微纤维布料的方法,其特征还包括将所述层压料在间断的离散粘合区用热压法压花粘合。 8. The improved method of melt-blown microfibers having a fabric abrasion fastness, characterized by further comprising laminating said adhesive material using a hot embossing method of manufacturing according to claim 6 in discrete bonding zones intermittently .
CN 86106922 1985-10-02 1986-09-30 Nonwoven fabric with improved abrasion resistance fastness and mfg. method thereof CN1014156B (en)

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US8513147B2 (en) 2003-06-19 2013-08-20 Eastman Chemical Company Nonwovens produced from multicomponent fibers
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CN102350854B (en) * 2011-08-29 2013-10-09 江阴金凤特种纺织品有限公司 Transfer method for glueing spunbonded nonwovens
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US9303357B2 (en) 2013-04-19 2016-04-05 Eastman Chemical Company Paper and nonwoven articles comprising synthetic microfiber binders
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US9605126B2 (en) 2013-12-17 2017-03-28 Eastman Chemical Company Ultrafiltration process for the recovery of concentrated sulfopolyester dispersion
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US4196245A (en) * 1978-06-16 1980-04-01 Buckeye Cellulos Corporation Composite nonwoven fabric comprising adjacent microfine fibers in layers

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EP0218473A3 (en) 1989-10-11 application
DE3688771T2 (en) 1993-11-11 grant
JPH0320507B2 (en) 1991-03-19 grant
CA1290517C (en) 1991-10-15 grant
ES2042495T3 (en) 1993-12-16 grant
JPS6290361A (en) 1987-04-24 application
DE3688771D1 (en) 1993-09-02 grant
EP0218473A2 (en) 1987-04-15 application
CN86106922A (en) 1987-04-01 application
EP0218473B1 (en) 1993-07-28 grant

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