WO2020259188A1 - 一种应用于高速真空圆网造纸机的毛毯 - Google Patents

一种应用于高速真空圆网造纸机的毛毯 Download PDF

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Publication number
WO2020259188A1
WO2020259188A1 PCT/CN2020/092577 CN2020092577W WO2020259188A1 WO 2020259188 A1 WO2020259188 A1 WO 2020259188A1 CN 2020092577 W CN2020092577 W CN 2020092577W WO 2020259188 A1 WO2020259188 A1 WO 2020259188A1
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Prior art keywords
nylon
fiber web
layer fiber
felt
paper machine
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PCT/CN2020/092577
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English (en)
French (fr)
Inventor
谢宗国
谢元松
周兴富
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四川环龙技术织物有限公司
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Priority claimed from CN201910572145.1A external-priority patent/CN110144751A/zh
Priority claimed from CN201920990962.4U external-priority patent/CN210561452U/zh
Application filed by 四川环龙技术织物有限公司 filed Critical 四川环龙技术织物有限公司
Publication of WO2020259188A1 publication Critical patent/WO2020259188A1/zh

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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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/02—Layered products comprising a layer of synthetic resin in the form of fibres or filaments
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts

Definitions

  • the invention belongs to the technical field of papermaking felts, and specifically relates to a felt applied to a high-speed vacuum cylinder paper machine.
  • Papermaking blankets are special textiles for industrial use. They are valuable and consumable equipment indispensable for the papermaking industry. Its quality is directly related to the quality of the paper produced, the production efficiency of the paper machine, and the energy consumption.
  • the development of industrial production technology requires papermaking blankets to have the characteristics of high strength, good flatness, good compression resilience and good dimensional stability.
  • the blankets used in the paper industry generally include traditional woven blankets, ordinary base fabric needle-punched blankets, non-weft or low-weft needle-punched blankets, bottom net needle-punched blankets, non-base fabric needle-punched blankets, seam needle-punched blankets, etc. .
  • the more commonly used bottom net needle-punched blankets are composed of a bottom net layer and a fiber layer.
  • the bottom net layer is divided into three types: single layer, double layer, and laminated layer.
  • the bottom net is generally woven by different weaving methods of warp and weft composed of nylon monofilament or monofilament ply.
  • the fiber layer is generally layered by layered nylon staple fibers of different thicknesses. The combination of the fiber layer and the bottom net is completed by a needle punching process.
  • Papermaking felt is a key item used in papermaking technology, such as paper and wet paper press dewatering or transportation.
  • the industrial preparation method usually firstly uses synthetic fiber to make a base net with wide gaps, and then composite it with nonwoven fabric , After acupuncture, chemical treatment, resin finishing and heat setting.
  • the present invention provides a felt applied to a high-speed vacuum cylinder paper machine.
  • the felt of the present invention has good compression resistance and flexibility, good dewatering performance, long service life, etc. advantage.
  • a blanket applied to a high-speed vacuum cylinder paper machine includes a front layer fiber web, an intermediate layer fiber web, a base web, and a back layer fiber web that are sequentially connected from top to bottom.
  • the front layer fiber web , The middle layer fiber net, the base net and the back layer fiber net are entangled by needle punching.
  • the front layer fiber web is made of nylon 6 or nylon 66 with a fineness of 2-5 dtex.
  • the front layer fiber web of the present invention adopts nylon 6 or nylon 66 of the above-mentioned fineness, which can make the felt fine and soft, the felt is soft, the surface is smooth, the specific surface area of the felt is increased, and the tissue pulp on the cylinder is effectively removed.
  • the fine fiber can lock the moisture, and the surface in contact with the paper is smooth and delicate, locks the moisture, and reduces the rewetting of the paper sheet.
  • the intermediate layer fiber web is made of nylon 6 or nylon 66 with a fineness of 7-11 dtex.
  • the fiber web of the middle layer is a compression-resistant elastic layer, and the above-mentioned fiber fineness is adopted to improve the compression resistance of the blanket, maintain the openness of the blanket, maintain the water-holding space of the blanket, and increase the service life of the blanket.
  • the back layer fiber web is made of nylon 6 or nylon 66 with a fineness of 11-22 dtex.
  • the back layer fiber web is used as a pressure-resistant and hydrophobic layer, and the above-mentioned fiber fineness is used to make the water pressed out of the nip into the hole of the vacuum press roll as soon as possible, and is thrown out by centrifugal force.
  • the thickness ratio between the front layer fiber web, the middle layer fiber web, the base web and the back layer fiber web is 1:2.67 to 3.67:1.67 to 2:1.33.
  • the base mesh is composed of warp threads and weft threads, and the warp threads and weft threads are all made of nylon 6 or nylon 66 stranded yarns.
  • the weft thread is made of four strands of nylon 6 or nylon 66 twisted yarn, the weft density of nylon 6 or nylon 66 twisted yarn is 80 strands/10 cm, and the warp thread is made of six strands of nylon 6 or nylon 66 twisted yarn.
  • the nylon 6 or nylon 66 twisted yarn has a warp density of 80 threads/10 cm.
  • the nylon 6 or nylon 66 twisted yarns in the warp are made by twisting two nylon 6 or nylon 66 monofilaments, and then adding three monofilaments.
  • the nylon 6 or nylon 66 twisted yarns in the weft are made by twisting two nylon 6 or nylon 66 monofilaments and then adding two twists.
  • weft thread is centered on one strand of nylon 6 or nylon 66 twisted yarn, and the other five strands of nylon 6 or nylon 66 twisted yarn are evenly distributed around it.
  • cross section of the nylon 6 or nylon 66 twisted yarn is circular, and the cross section of the middle nylon 6 or nylon 66 twisted yarn is tangent to the cross section of the surrounding five nylon 6 or nylon 66 twisted yarns.
  • warp threads and the weft threads are on the same horizontal plane, and the weft threads go around each warp thread in an "S" shape.
  • the warp and weft of the present invention use monofilament plied yarns as the base net, and the product is softer than thick monofilament yarns of the same weight.
  • the base net fabric structure is 1/1 plain weave, and the 1/1 plain weave structure is in the fabric structure. A structure with the densest and uniform interweaving points, with the most support, uniform compression performance, and good tensile performance.
  • the blanket applied to the high-speed vacuum cylinder paper machine of the present invention is formed by repeatedly entangled fibers by a needle-punching flocking machine. First, the base web and the middle layer fiber web are entangled by the needle punching machine, and then the back layer fiber web is passed through The needle punching machine is used for entanglement, and finally the front layer fiber web is entangled by the needle punching machine, followed by shaping and finishing, to obtain the felt of the present invention.
  • Each layer of the felt of the present invention is made of fibers of a specific fineness and a base net of a specific structure.
  • the fineness of the felt of the present invention has better dehydration capacity, which can reduce the rewetting of the felt to the paper sheet, thereby Improve the dryness of the wet paper sheet in the press area to achieve the purpose of saving steam consumption.
  • the steam consumption of the present invention is reduced by 10% compared with the traditional felt, and the tensile performance is good, and the felt has a long service life;
  • the base mesh of the present invention is prepared by warp and weft.
  • the warp and weft are made by selecting different strands of twisted yarns.
  • the felt has better compression resistance, so that the surface of the prepared paper has a higher smoothness.
  • the properties increase the tightness of the paper; it has good air permeability and water drainage, so that the air and moisture contained in it can be easily discharged from it.
  • Figure 1 is a schematic diagram of the structure of the felt applied to the high-speed vacuum cylinder paper machine of the present invention
  • 1-Front layer fiber net 2-Middle layer fiber net, 3-base net, 31-weft yarn, 32-warp yarn, 4-back layer fiber net.
  • Fig. 1 is a schematic diagram of the structure of the felt applied to the high-speed vacuum cylinder paper machine of the present invention.
  • the felts of the following embodiments are all made by the following method: the felt applied to the high-speed vacuum cylinder paper machine is formed by repeatedly entanglement of fibers by a needle-punching flocking machine. First, the base web and the middle layer fiber web are entangled by the needle-punching machine. Then, the back layer fiber web is entangled by a needle punching machine, and finally the front layer fiber web is entangled by a needle punching machine, followed by shaping and finishing to obtain the felt of the present invention.
  • the felt of this embodiment is applied to a high-speed vacuum cylinder paper machine.
  • the felt includes a front layer fiber web 1, an intermediate layer fiber web 2, a base web 3, and a back layer fiber web 4 sequentially connected from top to bottom.
  • the front layer fiber web 1, the middle layer fiber web 2, the base web 3 and the back layer fiber web 4 are entangled by needle punching.
  • the front layer fiber web 1 is made of nylon 6 with a denier of 2dtex
  • the middle layer fiber web 2 is made of nylon 6 with a denier of 7dtex
  • the back layer fiber web 4 is made of nylon 6 with a denier of 11dtex. 6
  • the thickness between the front layer fiber web 1, the middle layer fiber web 2, the base web 3 and the back layer fiber web 4 are 0.3mm, 0.8mm, 0.6mm, 0.4mm, respectively.
  • the base mesh 3 is composed of warp threads 32 and weft threads 31.
  • the weft threads 31 are made of four strands of nylon 6 ply yarns, and the weft density of the nylon 6 ply yarns is 80 threads/10 cm;
  • the warp thread 32 is made of six-strand nylon 6 stranded yarn.
  • the warp density of the nylon 6 is 80 strands/10 cm.
  • the weft thread 31 is centered on one strand of nylon 6 stranded yarn, and the other five strands of nylon 6 stranded The yarn is evenly distributed around it.
  • the other five nylon 6 strands are connected to the middle one.
  • the cross section of each nylon 6 strand is round.
  • the cross section of the middle nylon 6 strand is the same as the surrounding five nylon 6 strands.
  • the cross-section of the twisted yarn is tangent, the warp threads 32 and the weft threads 31 are on the same horizontal plane, and the weft threads 31 are in an "S" shape around each warp thread 32.
  • the felt of this embodiment is applied to a high-speed vacuum cylinder paper machine.
  • the felt includes a front layer fiber web 1, an intermediate layer fiber web 2, a base web 3, and a back layer fiber web 4 sequentially connected from top to bottom.
  • the front layer fiber web 1, the middle layer fiber web 2, the base web 3 and the back layer fiber web 4 are entangled by needle punching.
  • the front layer fiber web 1 is made of nylon 66 with a denier of 3.5 dtex
  • the middle layer fiber web 2 is made of nylon 66 with a denier of 9.5 dtex
  • the back layer fiber web 4 is made of 16 dtex.
  • the thickness between the front layer fiber web 1, the middle layer fiber web 2, the base web 3 and the back layer fiber web 4 are 0.3mm, 0.95mm, 0.55mm, 0.4mm, respectively.
  • the base mesh 3 is composed of warp threads 32 and weft threads 31, and the weft threads 31 are made up of four strands of nylon 66 ply yarns, and the weft density of the nylon 66 ply yarns is 80 threads/10 cm;
  • the warp thread 32 is made of six nylon 66 stranded yarns.
  • the warp density of the nylon 66 is 80 strands/10 cm.
  • the weft thread 31 is centered on one strand of nylon 66 stranded yarn, and the other five strands of nylon 66 stranded yarn.
  • the yarns are evenly distributed around it.
  • the other five nylon 66 ply wires are connected to the middle one.
  • the cross section of each nylon 66 ply wire is round.
  • the middle one nylon 66 ply wire has the same cross section as the surrounding five nylon 66 wires.
  • the cross-section of the twisted yarn is tangent, the warp threads 32 and the weft threads 31 are on the same horizontal plane, and the weft threads 31 are in an "S" shape around each warp thread 32.
  • the felt of this embodiment is applied to a high-speed vacuum cylinder paper machine.
  • the felt includes a front layer fiber web 1, an intermediate layer fiber web 2, a base web 3, and a back layer fiber web 4 sequentially connected from top to bottom.
  • the front layer fiber web 1, the middle layer fiber web 2, the base web 3 and the back layer fiber web 4 are entangled by needle punching.
  • the front layer fiber web 1 is made of nylon 6 with a fineness of 5 dtex
  • the middle layer fiber 2 shown is made of nylon 6 with a fineness of 11 dtex
  • the back layer fiber web 4 is made of nylon with a fineness of 22 dtex. 6
  • the thickness between the front layer fiber web 1, the middle layer fiber web 2, the base web 3 and the back layer fiber web 4 are 0.3mm, 1.1mm, 0.5mm, 0.4mm, respectively.
  • the base mesh 3 is composed of warp threads 32 and weft threads 31.
  • the weft threads 31 are made of four strands of nylon 6 ply yarns, and the weft density of the nylon 6 ply yarns is 80 threads/10 cm;
  • the warp thread 32 is made of six-strand nylon 6 stranded yarn.
  • the warp density of the nylon 6 is 80 strands/10 cm.
  • the weft thread 31 is centered on one strand of nylon 6 stranded yarn, and the other five strands of nylon 6 stranded The yarn is evenly distributed around it.
  • the other five nylon 6 strands are connected to the middle one.
  • the cross section of each nylon 6 strand is round.
  • the cross section of the middle nylon 6 strand is the same as the surrounding five nylon 6 strands.
  • the cross-section of the twisted yarn is tangent, the warp threads 32 and the weft threads 31 are on the same horizontal plane, and the weft threads 31 are in an "S" shape around each warp thread 32.
  • the felt applied to the high-speed vacuum cylinder paper machine of this embodiment is the same as that of Embodiment 1, except that the warp threads 32 are made of a strand of nylon 6 ply yarn.
  • the felt applied to the high-speed vacuum cylinder paper machine in this embodiment is the same as that of Embodiment 1, except that the warp threads 32 and the weft threads 31 are made of a single strand of nylon 6 stranded yarn.
  • the mechanical properties of the felts prepared in Examples 1-3 and Comparative Examples 1 and 2 were tested to determine the bending strength and tensile strength.
  • the tensile strength was measured according to the GB/T1040-92 standard, and the bending strength was measured according to the GB/T9341-2000 standard. , The results are shown in Table 1.
  • the blanket prepared with the structure of the present invention has better tensile strength and bending strength. This is because the blanket made with the structure of the present invention has the most supporting points, dense, uniform, and compressive performance. Also better.
  • a high-speed vacuum cylinder paper machine produces 45t toilet paper, using the blankets prepared in Examples 1-3 and Comparative Examples 1-2, respectively. See Table 2 for steam consumption and total power consumption.

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Abstract

一种应用于高速真空圆网造纸机的毛毯，所述的毛毯由上至下包括依次连接的正面层纤维网（1）、中间层纤维网（2）、基网（3）和背面层纤维网（4），所述的正面层纤维网（1）、中间层纤维网（2）、基网（3）和背面层纤维网（4）经针刺定型而成。该毛毯各层通过特定细度的纤维和基网（3）制成，该纤细下的毛毯具有较好的脱水能力，能够降低毛毯对纸页的返湿，从而提高出压区湿纸页的干度，达到节约蒸汽消耗的目的，蒸汽消耗量较传统毛毯降低了10％，且抗拉性能好，毛毯的使用寿命长；所述基网通过经线（32）和纬线（31）制备而成，经线（32）和纬线（31）选择不同股数的合股丝合股而成，毛毯的抗压性能较好，具有较好的透气性和滤水性。

Description

一种应用于高速真空圆网造纸机的毛毯 技术领域
本发明属于造纸毛毯技术领域，具体涉及一种应用于高速真空圆网造纸机的毛毯。
背景技术
造纸毛毯属于工业用特殊纺织品，是现在造纸工业必不可少的贵重易耗器材，它的质量与生产的纸张质量，造纸机的生产效率和能源的消耗等方面均有着直接的关系，随着造纸工业生产技术的发展，要求造纸毛毯应具有强力大、平整性好、压缩回弹性好及尺寸稳定性好等特点。
目前，造纸工业中应用的毛毯一般有传统编织毯、普通基布针刺毛毯、无纬或稀纬针刺毛毯、底网针刺毛毯、无基布针刺毛毯、接缝针刺毛毯等类型。较常用的底网针刺毛毯是由底网层和纤维层组成，其中底网层分为单层、双层、叠层三种类型。底网一般由锦纶单丝或单丝合股组成的经线和纬线经不同的织法织造而成。纤维层一般是由不同粗细的锦纶短纤维分层铺设而成。纤维层与底网结合是通过针刺工艺完成的。
造纸毛毯是应用于造纸技术中纸张、湿纸压榨脱水或输送等步骤中的关键物品，其工业制备方法通常是先用合成纤维制成间隙宽而多的基网，然后再与非织造布复合，经针刺、化学处理、树脂整理和热定型而成。
现有的毛毯在压榨脱水过程中仍然存在出压榨区纸页含湿量大、压榨过程中脱水效率低，纸页进烘缸蒸汽的消耗量大、抗压强度差等缺点。
鉴于以上原因，特提出本发明。
发明内容
为了解决现有技术存在的以上问题，本发明提供了一种应用于高速真空圆网造纸机的毛毯，本发明的毛毯具有较好的抗压性能和柔软性，脱水性能好，使用寿命长等优点。
为了实现上述目的，本发明采用如下技术方案：
一种应用于高速真空圆网造纸机的毛毯，所述的毛毯由上至下包括依次连接的正面层纤维网、中间层纤维网、基网和背面层纤维网，所述的正面层纤维网、中间层纤维网、基网和背面层纤维网经针刺缠结而成，。
进一步的，所述的正面层纤维网由纤度为2～5dtex的尼龙6或尼龙66制成。
本发明的正面层纤维网采用上述细度的尼龙6或尼龙66，可以使毛毯细腻、柔软，毛毯柔软、表面平整，增大毛毯的比表面积，有效的揭取圆网笼上的薄页纸浆，避免出现砂眼的疵点，细纤维能锁水分，与纸面接触表面平整细腻，锁住水分，减少纸页压榨的返湿。
进一步的，所述的中间层纤维网由纤度为7～11dtex的尼龙6或尼龙66制成。
中间层纤维网为抗压弹性层，采用上述的纤维细度，提高毛毯的抗压能力，保持毛毯的开孔度，保持毛毯的容水空间，提高毛毯的使用寿命。
进一步的，所述的背面层纤维网由纤度为11～22dtex的尼龙6或尼龙66制成。
背面层纤维网作为抗压、疏水层，采用上述的纤维细度使压区压出的水分尽快到真空压辊的孔内，并通过离心力甩出。
进一步的，所述的正面层纤维网、中间层纤维网、基网和背面层纤维网之间的厚度比例为1:2.67～3.67:1.67～2:1.33。
进一步的，所述的基网由经线和纬线组成，所述的经线和纬线均由尼龙6或尼龙66合股丝合股而成。
进一步的，所述的纬线由四股尼龙6或尼龙66合股丝合股而成，尼龙6或尼龙66合股丝的纬密为80根/10厘米，所述的经线由六股尼龙6或尼龙66合股丝合股而成，所述的尼龙6或尼龙66合股丝的经密为80根/10厘米。
经线中的尼龙6或尼龙66合股丝为尼龙6或尼龙66单丝两根合股，然后在加三根单丝合股制成。纬线中的尼龙6或尼龙66合股丝为尼龙6或尼龙66单丝两根合股然后再加2根合股制成。
进一步的，所述的纬线以一股尼龙6或尼龙66合股丝为中心，其他五股尼龙6或尼龙66合股丝均匀分布在其周围。
进一步的，所述的尼龙6或尼龙66合股丝的截面为圆形，中间一股尼龙6或尼龙66合股丝的截面均与周围五股尼龙6或尼龙66合股丝的截面相切。
进一步的，所述的经线和纬线处于同一水平面上，所述的纬线呈“S”型绕过每根经线。
本发明的经线和纬线采用单丝合股纱线做基网，产品较相同重量粗单丝纱线的柔软，基网织物组织结构为1/1平纹，1/1平纹的组织结构是织物组织中交织点最密集、均匀的一种结构，且支撑最多，抗压性能较均匀，拉伸性能好。
本发明的应用于高速真空圆网造纸机的毛毯经针刺植绒机反复将纤维缠结而成，首先基网和中间层纤维网经过针刺机缠结，然后将背面层纤维网在通过针刺机进行缠结，最后将正面层纤维网通过针刺机进行缠结，依次定型、整理，得到了本发明的毛毯。
与现有技术相比，本发明的有益效果为：
(1)本发明的毛毯各层通过特定细度的纤维和特定结构的基网制成，在本发明的纤细下的毛毯具有较好的脱水能力，能够降低毛毯对纸页的返湿，从而提高出压区湿纸页的干度，达到节约蒸汽消耗的目的，本发明的蒸汽消耗量较传统毛毯降低了10％，且抗拉性能好，毛毯的使用寿命长；
(2)本发明的基网通过经线和纬线制备而成，经线和纬线选择不同股数的合股丝合股而成，毛毯的抗压性能较好，从而使制备的纸页表面具有较高的平滑性增加了纸页的的紧密程度；具有较好的透气性和滤水性，使容纳在其中的空气和水分易从其中排出。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明的应用于高速真空圆网造纸机的毛毯的结构示意图；
附图标记
1-正面层纤维网、2-中间层纤维网、3-基网、31-纬线、32-经线、4-背面层纤维网。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将对本发明的技术方案进行详细的描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所得到的所有其它实施方式，都属于本发明所保护的范围。
如图1所示为本发明的应用于高速真空圆网造纸机的毛毯的结构示意图。
以下实施例的毛毯均采用如下方法制成：应用于高速真空圆网造纸机的毛毯经针刺植绒机反复将纤维缠结而成，首先基网和中间层纤维网经过针刺机缠结，然后将背面层纤维网在通过针刺机进行缠结，最后将正面层纤维网通过针刺机进行缠结，依次定型、整理，得到了本发明的毛毯。
实施例1
本实施例的一种应用于高速真空圆网造纸机的毛毯，所述的毛毯由上至下包括依次连接的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4，所述的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4经针刺缠结而成。
所述的正面层纤维网1由纤度为2dtex的尼龙6制成，所示的中间层纤维网2由纤度为7dtex的尼龙6制成，所述的背面层纤维网4由纤度为11dtex的尼龙6制成，所述的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网 4之间的厚度分别为0.3mm、0.8mm、0.6mm、0.4mm。
其中，所述的基网3由经线32和纬线31组成，所述的纬线31由四股尼龙6合股丝合股而成，所述的尼龙6合股丝的纬密为80根/10厘米；所述的经线32由六股尼龙6合股丝合股而成，所述的尼龙6的经密为80根/10厘米，所述的纬线31以一股尼龙6合股丝为中心，其他五股尼龙6合股丝均匀分布在其周围，其他五股尼龙6合股丝均与中间一股连接，每股尼龙6合股丝的截面均为圆形，中间一股尼龙6合股丝的截面均与周围五股尼龙6合股丝的截面相切，所述的经线32和纬线31处于同一水平面上，所述的纬线31呈“S”型绕过每根经线32。
实施例2
本实施例的一种应用于高速真空圆网造纸机的毛毯，所述的毛毯由上至下包括依次连接的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4，所述的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4经针刺缠结而成。
所述的正面层纤维网1由纤度为3.5dtex的尼龙66制成，所示的中间层纤维网2由纤度为9.5dtex的尼龙66制成，所述的背面层纤维网4由纤度为16dtex的尼龙66制成，所述的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4之间的厚度分别为0.3mm、0.95mm、0.55mm、0.4mm。
其中，所述的基网3由经线32和纬线31组成，所述的纬线31由四股尼龙66合股丝合股而成，所述的尼龙66合股丝的纬密为80根/10厘米；所述的经线32由六股尼龙66合股丝合股而成，所述的尼龙66的经密为80根/10厘米，所述的纬线31以一股尼龙66合股丝为中心，其他五股尼龙66合股丝均匀分布在其周围，其他五股尼龙66合股丝均与中间一股连接，每股尼龙66合股丝的截面均为圆形，中间一股尼龙66合股丝的截面均与周围五股尼龙66合股丝的截面相切，所述的经线32和纬线31处于同一水平面上，所述的纬线31呈“S”型绕过每根经线32。
实施例3
本实施例的一种应用于高速真空圆网造纸机的毛毯，所述的毛毯由上至下包括依次连接的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4，所述的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4经针刺缠结而成。
所述的正面层纤维网1由纤度为5dtex的尼龙6制成，所示的中间层纤维2网由纤度为11dtex的尼龙6制成，所述的背面层纤维网4由纤度为22dtex的尼龙6制成，所述的正面层纤维网1、中间层纤维网2、基网3和背面层纤维网4之间的厚度分别为0.3mm、1.1mm、0.5mm、0.4mm。
其中，所述的基网3由经线32和纬线31组成，所述的纬线31由四股尼龙6合股丝合股而成，所述的尼龙6合股丝的纬密为80根/10厘米；所述的经线32由六股尼龙6合股丝合股而成，所述的尼龙6的经密为80根/10厘米，所述的纬线31以一股尼龙6合股丝为中心，其他五股尼龙6合股丝均匀分布在其周围，其他五股尼龙6合股丝均与中间一股连接，每股尼龙6合股丝的截面均为圆形，中间一股尼龙6合股丝的截面均与周围五股尼龙6合股丝的截面相切，所述的经线32和纬线31处于同一水平面上，所述的纬线31呈“S”型绕过每根经线32。
对比例1
本实施例的应用于高速真空圆网造纸机的毛毯与实施例1均相同，不同之处，经线32采用一股尼龙6合股丝制成。
对比例2
本实施例的应用于高速真空圆网造纸机的毛毯与实施例1均相同，不同之处，经线32和纬线31均采用一股尼龙6合股丝制成。
试验例1
对实施例1-3和对比例1和2制备的毛毯进行力学性能测试，测定弯曲强度和拉伸强度，拉伸强度按照GB/T1040-92标准测定，弯曲强度按照GB/T9341-2000标准测定，结果见表1。
表1
Figure PCTCN2020092577-appb-000001
从上表可以看出，采用本发明的结构制备的毛毯具有较好的拉伸强度和弯曲强度，这是由于采用本发明的结构制成的毛毯的支撑点最多，密集、均匀，抗压性能也较好。
试验例2
以木浆为原料，高速真空圆网造纸机生产45t卫生纸，分别使用实施例1-3和对比例1-2制备的毛毯，对于蒸汽消耗量和总耗电量见表2。
表2
Figure PCTCN2020092577-appb-000002
从上表可以看出，采用本发明制备的毛毯的蒸汽消耗量和总耗电量均比对比例1和2的低，这是由于不同的经线和纬线的结构会影响毛毯的返湿性能，从而影响蒸汽消耗量和耗电量。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (10)

  1. 一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的毛毯由上至下包括依次连接的正面层纤维网、中间层纤维网、基网和背面层纤维网，所述的正面层纤维网、中间层纤维网、基网和背面层纤维网经针刺缠结而成。
  2. 根据权利要求1所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的正面层纤维网由纤度为2～5dtex的尼龙6或尼龙66制成。
  3. 根据权利要求1所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的中间层纤维网由纤度为7～11dtex的尼龙6或尼龙66制成。
  4. 根据权利要求1所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的背面层纤维网由纤度为11～22dtex的尼龙6或尼龙66制成。
  5. 根据权利要求1-4任意一项所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的正面层纤维网、中间层纤维网、基网和背面层纤维网之间的厚度比例为1:2.67～3.67:1.67～2:1.33。
  6. 根据权利要求1-4任意一项所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的基网由经线和纬线组成，所述的经线和纬线均由尼龙6或尼龙66合股丝合股而成。
  7. 根据权利要求6所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的纬线由四股尼龙6或尼龙66合股丝合股而成，尼龙6或尼龙66合股丝的纬密为80根/10厘米，所述的经线由六股尼龙6或尼龙66合股丝合股而成，尼龙6或尼龙66合股丝的经密为80根/10厘米。
  8. 根据权利要求7所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的纬线以一股尼龙6或尼龙66合股丝为中心，其他五股尼龙6或尼龙66合股丝均匀分布在其周围。
  9. 根据权利要求8所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的尼龙6或尼龙66合股丝的截面为圆形，中间一股尼龙6或尼龙 66合股丝的截面均与周围五股尼龙6或尼龙66合股丝的截面相切。
  10. 根据权利要求9所述的一种应用于高速真空圆网造纸机的毛毯，其特征在于，所述的经线和纬线处于同一水平面上，所述的纬线呈“S”型绕过每根经线。
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