WO2021056247A1 - 无纺布及无纺布的加工装置 - Google Patents

无纺布及无纺布的加工装置 Download PDF

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Publication number
WO2021056247A1
WO2021056247A1 PCT/CN2019/107782 CN2019107782W WO2021056247A1 WO 2021056247 A1 WO2021056247 A1 WO 2021056247A1 CN 2019107782 W CN2019107782 W CN 2019107782W WO 2021056247 A1 WO2021056247 A1 WO 2021056247A1
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Prior art keywords
woven fabric
processing device
hot
skin layer
core
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PCT/CN2019/107782
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English (en)
French (fr)
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王玉稳
肖鹏远
阳方
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佐福（天津）科技有限公司
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Priority to PCT/CN2019/107782 priority Critical patent/WO2021056247A1/zh
Publication of WO2021056247A1 publication Critical patent/WO2021056247A1/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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers

Definitions

  • the present invention relates to the technical field of non-woven fabrics, in particular to a non-woven fabric and a processing device for non-woven fabrics.
  • non-woven fabrics In the daily necessities packaging and filtration industry, non-woven fabrics must have environmentally friendly and recyclable properties, and such materials must have certain air permeability and filtration properties.
  • Non-woven fabrics can meet the above conditions, but the non-woven fabrics in the prior art are relatively soft, because they are too soft and difficult to cut, or some non-woven fabrics have high stiffness and high tear strength, which is also more difficult to cut. Cut, so if it is used in daily necessities packaging and filtration industries, there will be non-woven fabrics that are not easy to cut.
  • the main purpose of the present invention is to provide a non-woven fabric and a non-woven fabric processing device to solve the problem of difficulty in cutting non-woven fabrics in the prior art.
  • a non-woven fabric comprising: a non-woven fabric core, the non-woven fabric core is made of polypropylene material; a non-woven fabric skin layer, the non-woven fabric skin layer is at least On the upper and lower surfaces of the woven fabric core, the non-woven fabric skin layer is made of polypropylene material; the elongation rate of the polypropylene material of the non-woven fabric core is not less than the elongation rate of the polypropylene material of the non-woven fabric skin layer.
  • the upper surface of the non-woven fabric is provided with a first recess.
  • the first concave portion is a plurality of concave points arranged at intervals.
  • the lower surface of the non-woven fabric is provided with a second recess.
  • the second concave portion is a plurality of concave points arranged at intervals.
  • the melting point of the polypropylene material of the non-woven fabric core is not lower than the melting point of the polypropylene material of the non-woven fabric skin layer.
  • a non-woven fabric processing device the non-woven fabric processed by the processing device is the above non-woven fabric, and the processing device includes: a non-woven fabric core feeding mechanism; a non-woven fabric skin layer The feeding mechanism; the spinneret mechanism, the feeding mechanism of the non-woven fabric core and the feeding mechanism of the non-woven fabric skin layer are all connected with the spinneret mechanism to connect the polypropylene material of the non-woven core and the non-woven fabric
  • the polypropylene material of the skin layer enters the spinneret mechanism to form a mixed polypropylene; a hot-rolling processing mechanism, and the mixed polypropylene is formed into a non-woven fabric through the hot-rolling processing mechanism.
  • the feeding mechanism of the non-woven fabric core and the feeding mechanism of the non-woven fabric skin layer each include a screening structure, a melting and stirring structure, a filtering structure, and a metering structure in sequence.
  • the processing device of the non-woven fabric further includes a netting mechanism, and the netting mechanism is arranged between the spinneret mechanism and the hot rolling processing mechanism.
  • the netting mechanism is arranged below the spinneret mechanism.
  • the non-woven fabric processing device further includes a blowing mechanism, which is arranged between the spinneret mechanism and the netting mechanism.
  • the hot-rolling processing mechanism sequentially includes a pre-processing structure, the pre-processing structure includes a first lower roller and a first upper roller, the surface of the first lower roller is a smooth surface, and the surface of the first upper roller has a plurality of spaced spaces. Bump.
  • the hot-rolling treatment mechanism further includes a transfer structure and a hot-rolled structure, the transfer structure is arranged between the pre-processing structure and the hot-rolled structure, and the upper and lower surfaces of the non-woven fabric are reversed, and the hot-rolled structure includes a second lower roller and a second lower roller. Two upper rollers, the surface of the second lower roller is smooth, and the surface of the second upper roller has a plurality of convex points arranged at intervals.
  • the elongation range of the non-woven fabric after the hot-rolled structure is between 3% and 180%.
  • the range of the tear strength of the non-woven fabric after the hot-rolled structure is between 2N and 55N.
  • the range of the hot melt ratio of the non-woven fabric after the hot-rolled structure is between 16% and 35%.
  • the processing device of the non-woven fabric further includes a collecting roller, and the collecting roller is a cold roller.
  • the non-woven fabric is composed of an outer non-woven fabric skin layer and an inner non-woven fabric core.
  • Both the non-woven fabric core and the non-woven fabric skin layer are made of polypropylene, and the elongation rate of the non-woven fabric core is greater than that of the non-woven fabric skin layer, so that the non-woven fabric skin layer will be firmer and easier to cut .
  • the technical scheme of the present invention effectively solves the problem of difficulty in cutting non-woven fabrics in the prior art.
  • Figure 1 shows a schematic structural view of an embodiment of a non-woven fabric according to the present invention.
  • Fig. 2 shows a schematic structural diagram of a processing device for a non-woven fabric according to the present invention.
  • Non-woven fabric core 20. Non-woven fabric skin; 30. Feeding mechanism of non-woven fabric core; 40. Feeding mechanism of non-woven fabric; 41. Screening structure; 42, Melting and stirring structure; 43. Filtering Structure; 44. Metering structure; 50. Spinneret mechanism; 60. Hot rolling processing mechanism; 61. Pretreatment structure; 62. Transmission structure; 63. Hot rolling structure; 70. Netting mechanism; 80. Blowing mechanism; 90 , Collecting roller.
  • the non-woven fabric of this embodiment includes: a non-woven fabric core 10 and a non-woven fabric skin layer 20.
  • the non-woven fabric core 10 is made of polypropylene material.
  • the non-woven fabric skin layer 20 is located at least on the upper and lower surfaces of the non-woven fabric core 10, and the non-woven fabric skin layer 20 is made of polypropylene material.
  • the elongation rate of the polypropylene material of the non-woven fabric core 10 is not less than the elongation rate of the polypropylene material of the non-woven fabric skin layer 20.
  • the non-woven fabric is composed of an outer non-woven fabric skin layer 20 and an inner non-woven fabric core 10.
  • Both the non-woven fabric core 10 and the non-woven fabric skin layer 20 are made of polypropylene material, and the elongation rate of the non-woven fabric core 10 is greater than that of the non-woven fabric skin layer 20, so that the non-woven fabric skin layer 20 will be relatively strong , It is easier to cut.
  • the technical solution of this embodiment effectively solves the problem of difficulty in cutting non-woven fabrics in the prior art.
  • the upper and lower surfaces of the present application are not used as limitations on the non-woven fabric core 10.
  • the upper and lower surfaces are only for the convenience of explaining clearly the structure of the non-woven fabric core 10 and its matching structure.
  • the upper and lower surfaces of the non-woven fabric core 10 Refers to a plane with a relatively large area, and non-woven fabrics have the same principle as above.
  • the melting point of the polypropylene material of the non-woven fabric core 10 is not lower than the melting point of the polypropylene material of the non-woven fabric skin layer 20. The elongation of the non-woven fabric will have a greater impact on the shearing effect in the subsequent processing and production.
  • the upper surface of the non-woven fabric is provided with a first recess.
  • the arrangement of the first recess makes the position of the non-woven fabric relatively weak, and the arrangement of the first recess makes the non-woven fabric easier to cut.
  • the first concave portion is a plurality of concave points arranged at intervals. The processing cost of the above structure is low, and the influence of multiple pits on the non-woven fabric is small.
  • a second recess is provided on the lower surface of the non-woven fabric.
  • the above structure makes the cutting of the non-woven fabric easier.
  • the second concave portion is a plurality of concave points arranged at intervals.
  • the processing cost of the above structure is low, and under the premise of a certain rolling point area and hot melt ratio, multiple pits have less influence on the non-woven fabric.
  • the upper and lower surfaces of the non-woven fabric are provided with a structure of multiple bumps, which increases the air permeability of the non-woven fabric.
  • the present application also provides a non-woven fabric processing device, and the non-woven fabric processed by the processing device is the above-mentioned non-woven fabric.
  • the processing device includes: a non-woven fabric core feeding mechanism 30, a non-woven fabric skin layer feeding mechanism 40, and a spinneret mechanism 50.
  • the feeding mechanism 30 of the non-woven fabric core and the feeding mechanism 40 of the non-woven fabric skin layer are both connected with the spinneret mechanism 50 to allow the polypropylene material of the non-woven fabric core and the polypropylene material of the non-woven fabric skin layer into the spray
  • the wire plate mechanism 50 forms mixed polypropylene.
  • the hot rolling processing mechanism 60 forms a non-woven fabric by the mixed polypropylene through the hot rolling processing mechanism 60. Two kinds of polypropylene (PP) with different elongation rates are mixed into a predetermined composition through a feed mechanism and a spinneret mechanism 50. Then, it is processed by the hot rolling processing mechanism 60.
  • PP polypropylene
  • the ratio of the rolling point area to the fiber area is 72:18. After hot pressing, the ratio can be achieved 55:45 while ensuring the air permeability, and it has little effect on the air permeability. After hot rolling, the hot-melt ratio of the material has increased by nearly 100%, but the air permeability is only reduced by about 20%, better can be achieved by only 15%, and the best can be achieved by less than 10%.
  • the feeding mechanism 30 of the non-woven fabric core and the feeding mechanism 40 of the non-woven fabric skin layer in turn include a screening structure 41, a melting and stirring structure 42, a filtering structure 43 and Measurement structure 44.
  • the polypropylene first enters the screening structure 41 after screening suitable polypropylene and enters the next step.
  • the unsuitable polypropylene is taken out.
  • the melting and stirring structure 42 includes a screw structure. The screw structure is used for stirring.
  • the melting and stirring structure 42 also includes a heating structure. Stir evenly after melting.
  • the melted and stirred polypropylene is filtered and enters the metering structure 44, so that different polypropylenes are proportioned according to the standard, and the metering structure is a 44-position metering pump.
  • the feeding mechanism 30 of the non-woven fabric core and/or the feeding mechanism 40 of the non-woven fabric skin layer may be colored.
  • the non-woven fabric processing device further includes a net-laying mechanism 70, and the net-laying mechanism 70 is arranged between the spinneret mechanism 50 and the hot-rolling processing mechanism 60.
  • the setting of the netting mechanism 70 makes the non-woven fabric convenient for further processing.
  • the mesh laying mechanism 70 can make the polypropylene laid out from the spinneret mechanism 50 easy to be processed by the hot-rolling processing mechanism 60, so that the processing efficiency of the hot-rolling processing mechanism 60 is higher.
  • the netting mechanism 70 is arranged below the spinneret mechanism 50. After the polypropylene comes out of the spinneret mechanism 50, it falls onto the netting mechanism 70 under the action of gravity.
  • the above structure saves energy.
  • the non-woven fabric processing device further includes a blowing mechanism 80, and the blowing mechanism 80 is arranged between the spinneret mechanism 50 and the netting mechanism 70.
  • the blowing mechanism 80 is arranged in two groups from top to bottom, the upper blowing mechanism 80 blows air to the polypropylene before the polypropylene converges, and the lower blowing mechanism 80 blows the converged polypropylene.
  • the hot rolling processing mechanism 60 sequentially includes a pre-processing structure 61, the pre-processing structure 61 includes a first lower roller and a first upper roller, the surface of the first lower roller is light
  • the surface of the first upper roller has a plurality of convex points spaced apart.
  • the first lower roller is a smooth surface, so that the lower surface of the non-woven fabric is flat
  • the surface of the first upper roller has a plurality of convex points spaced apart, so that the upper surface of the non-woven fabric is a surface with a plurality of concave points.
  • the non-woven fabric is easy to cut, and the arrangement of multiple recesses is conducive to the non-woven fabric's air permeability.
  • the pretreatment structure 61 has a heating function, that is, the non-woven fabric is processed under heating.
  • the hot-rolling processing mechanism 60 further includes a transmission structure 62 and a hot-rolled structure 63.
  • the transmission structure 62 is disposed between the pre-processing structure 61 and the hot-rolled structure 63, and The upper and lower surfaces of the non-woven fabric are reversed.
  • the hot rolling structure 63 includes a second lower roller and a second upper roller. The surface of the second lower roller is smooth, and the surface of the second upper roller has a plurality of convex points spaced apart. In this way, the lower surface of the pretreatment structure 61 is called the upper surface of the hot-rolled structure 63, and a plurality of recesses are provided on the upper surface, which further increases the air permeability of the non-woven fabric.
  • the transmission structure 62 includes a roller, the roller is a cold roller, and the roller of the pretreatment structure and the roller of the hot rolling structure are high temperature rollers.
  • the elongation range of the non-woven fabric after the hot-rolled structure 63 is between 3% and 180%.
  • the tear strength of the non-woven fabric after the hot-rolled structure 63 ranges from 2N to 55N.
  • the range of the hot melt ratio of the non-woven fabric after the hot-rolled structure 63 is between 16% and 35%. This makes the tearing effect of the non-woven fabric better and easier to cut.
  • the non-woven fabric processing device further includes a collecting drum 90, which is a cold drum.
  • a collecting drum 90 which is a cold drum.
  • the above structure facilitates the collection of non-woven fabrics.
  • the attached table shows the numerical values of elongation before and after hot rolling.
  • the non-woven fabric processing method includes: A. In the non-woven fabric In the fabric processing device, the polypropylene material of the non-woven fabric core and the polypropylene material of the non-woven fabric skin layer are added. B. Use non-woven fabric processing equipment to process non-woven fabrics by hot rolling.

Abstract

一种无纺布及无纺布的加工装置，其中，无纺布包括：无纺布芯（10），无纺布芯（10）由聚丙烯材料制成；无纺布皮层（20），无纺布皮层（20）至少位于无纺布芯（10）的上下表面，无纺布皮层（20）由聚丙烯材料制成；无纺布芯（10）的聚丙烯材料的伸长率不小于无纺布皮层（20）的聚丙烯材料的伸长率，有效地解决了现有技术中的无纺布剪切困难的问题。

Description

无纺布及无纺布的加工装置 技术领域
本发明涉及无纺布的技术领域，具体而言，涉及一种无纺布及无纺布的加工装置。
背景技术
在日用品包装和过滤行业，要求无纺布必须具备环保可回收性能，同时这样的材料必须具备一定的透气性和过滤性。无纺布能够满足上述条件，但是现有技术中的无纺布都是比较柔软，因为太柔软所以很难剪切，或者有的无纺布硬挺度高撕裂强度比较高，也是比较难剪切，所以如果用在日用品包装和过滤行业中就会存在无纺布不容易剪切。
发明内容
本发明的主要目的在于提供一种无纺布及无纺布的加工装置，以解决现有技术中的无纺布剪切困难的问题。
为了实现上述目的，根据本发明的一个方面，提供了一种无纺布，包括：无纺布芯，无纺布芯由聚丙烯材料制成；无纺布皮层，无纺布皮层至少位于无纺布芯的上下表面，无纺布皮层由聚丙烯材料制成；无纺布芯的聚丙烯材料的伸长率不小于无纺布皮层的聚丙烯材料的伸长率。
进一步地，无纺布的上表面设置有第一凹部。
进一步地，第一凹部为相间隔设置地多个凹点。
进一步地，无纺布的下表面设置有第二凹部。
进一步地，第二凹部为相间隔设置地多个凹点。
进一步地，无纺布芯的聚丙烯材料的熔点不低于无纺布皮层的聚丙烯材料的熔点。
根据本发明的另一方面，提供了一种无纺布的加工装置，加工装置加工的无纺布为上述的无纺布，加工装置包括：无纺布芯的进料机构；无纺布皮层的进料机构；喷丝板机构，无纺布芯的进料机构和无纺布皮层的进料机构均与喷丝板机构相连通，以将无纺布芯的聚丙烯材料和无纺布皮层的聚丙烯材料进入喷丝板机构形成混合后的聚丙烯；热轧处理机构，混合后的聚丙烯通过热轧处理机构形成无纺布。
进一步地，无纺布芯的进料机构和无纺布皮层的进料机构均依次包括筛选结构、熔化搅拌结构、过滤结构和计量结构。
进一步地，无纺布的加工装置还包括铺网机构，铺网机构设置在喷丝板机构和热轧处理机构之间。
进一步地，铺网机构设置在喷丝板机构的下方。
进一步地，无纺布的加工装置还包括吹风机构，吹风机构设置在喷丝板机构和铺网机构之间。
进一步地，热轧处理机构依次包括预处理结构，预处理结构包括第一下滚筒和第一上滚筒，第一下滚筒的表面为光面，第一上滚筒的表面具有多个相间隔设置地凸点。
进一步地，热轧处理机构还包括传输结构和热轧结构，传输结构设置在预处理结构和热轧结构之间，并将无纺布的上下表面颠倒，热轧结构包括第二下滚筒和第二上滚筒，第二下滚筒的表面为光面，第二上滚筒的表面具有多个相间隔设置地凸点。
进一步地，经过热轧结构后的无纺布的伸长的范围在3％至180％之间。
进一步地，经过热轧结构后的无纺布的撕裂强度的范围在2N至55N之间。
进一步地，经过热轧结构后的无纺布的热熔比的范围在16％至35％之间。
进一步地，无纺布的加工装置还包括收集滚筒，收集滚筒为冷滚筒。
应用本发明的技术方案，无纺布由外层的无纺布皮层和内部的无纺布芯构成。无纺布芯和无纺布皮层均由聚丙烯材料制成，且无纺布芯的伸长率大于无纺布皮层的伸长率，这样无纺布皮层就会比较坚挺，剪切比较容易。本发明的技术方案有效地解决了现有技术中的无纺布剪切困难的问题。
附图说明
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1示出了根据本发明的无纺布的实施例的结构示意图；以及
图2示出了根据本发明的无纺布的加工装置的结构示意图。
其中，上述附图包括以下附图标记：
10、无纺布芯；20、无纺布皮层；30、无纺布芯的进料机构；40、无纺布皮层的进料机构；41、筛选结构；42、熔化搅拌结构；43、过滤结构；44、计量结构；50、喷丝板机构；60、热轧处理机构；61、预处理结构；62、传输结构；63、热轧结构；70、铺网机构；80、吹风机构；90、收集滚筒。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
如图1所示，本实施例的无纺布包括：无纺布芯10和无纺布皮层20。无纺布芯10由聚丙烯材料制成。无纺布皮层20至少位于无纺布芯10的上下表面，无纺布皮层20由聚丙烯材料制成。无纺布芯10的聚丙烯材料的伸长率不小于无纺布皮层20的聚丙烯材料的伸长率。
应用本实施例的技术方案，无纺布由外层的无纺布皮层20和内部的无纺布芯10构成。无纺布芯10和无纺布皮层20均由聚丙烯材料制成，且无纺布芯10的伸长率大于无纺布皮层20的伸长率，这样无纺布皮层20就会比较坚挺，剪切比较容易。本实施例的技术方案有效地解决了现有技术中的无纺布剪切困难的问题。
需要说明的是，本申请的上下表面不作为对无纺布芯10的限定，上下表面只是为了方便把无纺布芯10的结构和与其配合的结构介绍清楚，无纺布芯10的上下表面是指面积比较大的平面，无纺布与上述同理。无纺布芯10的聚丙烯材料的熔点不低于无纺布皮层20的聚丙烯材料的熔点。无纺布的伸长率在后续的加工生产中会对剪切效果产生较大的影响。
如图1所示，在本实施例的技术方案中，无纺布的上表面设置有第一凹部。第一凹部的设置使得无纺布有的位置受力比较薄弱，第一凹部的设置使得无纺布更容易剪切。具体地，第一凹部为相间隔设置地多个凹点。上述结构加工成本较低，多个凹点对无纺布的影响较小。
如图1所示，在本实施例的技术方案中，无纺布的下表面设置有第二凹部。上述结构使得无纺布的剪切更加容易。具体地，第二凹部为相间隔设置地多个凹点。上述结构加工成本较低，在一定的轧点面积和热熔比前提下，多个凹点对无纺布的影响较小。更重要的是，无纺布上下表面均设置有多个凸点的结构，增加了无纺布的透气性。
如图2所示，本申请还提供了一种无纺布的加工装置，加工装置加工的无纺布为上述的无纺布。加工装置包括：无纺布芯的进料机构30、无纺布皮层的进料机构40和喷丝板机构50。无纺布芯的进料机构30和无纺布皮层的进料机构40均与喷丝板机构50相连通，以将无纺布芯的聚丙烯材料和无纺布皮层的聚丙烯材料进入喷丝板机构50形成混合后的聚丙烯。热轧处理机构60，混合后的聚丙烯通过热轧处理机构60形成无纺布。两种伸长率不同的聚丙烯(PP)通过进料机构，经过喷丝板机构50混合成预定的成分。然后通过热轧处理机构60进行处理。
经过加工的布在进入轧机之前轧点面积和纤维面积比是72：18，经过热压后可以在保证透气量的情况下，把比值可以做到55：45，还对透气率影响不大，经过热轧后的材料热熔比值增加了将近100％，但是透气率只是下降20％左右，更好的可以做到只下降15％，最好的可以做到10％以下。
如图2所示，在本实施例的技术方案中，无纺布芯的进料机构30和无纺布皮层的进料机构40均依次包括筛选结构41、熔化搅拌结构42、过滤结构43和计量结构44。聚丙烯先进入筛选结构41经过筛选合适的聚丙烯进入下一步，不合适的聚丙烯被取出，熔化搅拌结构42 包括螺杆结构，螺杆结构进行搅拌，熔化搅拌结构42还包括加热结构，将聚丙烯熔化后再进行搅拌均匀。熔化、搅拌均匀的聚丙烯，经过过滤，进入计量结构44，以使不同的聚丙烯按照标准进行配比，计量结构44位计量泵。需要说明的是，无纺布芯的进料机构30和/或无纺布皮层的进料机构40，可以加颜色。
如图2所示，在本实施例的技术方案中，无纺布的加工装置还包括铺网机构70，铺网机构70设置在喷丝板机构50和热轧处理机构60之间。铺网机构70的设置使得无纺布方便进行下一步加工。铺网机构70可以使从喷丝板机构50出来的聚丙烯铺设的容易进行热轧处理机构60处理，这样热轧处理机构60的处理效率更高。
如图2所示，在本实施例的技术方案中，铺网机构70设置在喷丝板机构50的下方。聚丙烯从喷丝板机构50出来后，在重力的作用下落到铺网机构70上，上述结构节省能量。
如图2所示，在本实施例的技术方案中，无纺布的加工装置还包括吹风机构80，吹风机构80设置在喷丝板机构50和铺网机构70之间。具体地，吹风机构80由上至下设置为两组，上部的吹风机构80在聚丙烯汇聚之前向聚丙烯吹风，下部的吹风机构80将汇聚的聚丙烯吹散。
如图2所示，在本实施例的技术方案中，热轧处理机构60依次包括预处理结构61，预处理结构61包括第一下滚筒和第一上滚筒，第一下滚筒的表面为光面，第一上滚筒的表面具有多个相间隔设置地凸点。第一下滚筒为光面，这样无纺布的下表面为平面，第一上滚筒的表面具有多个相间隔设置地凸点，这样无纺布的上表面为具有多个凹点的表面，这样无纺布容易剪切，而且多个凹点的设置有利于无纺布透气。需要注意的是预处理结构61具有加热功能，即无纺布是在加热的条件下进行处理的。
如图2所示，在本实施例的技术方案中，热轧处理机构60还包括传输结构62和热轧结构63，传输结构62设置在预处理结构61和热轧结构63之间，并将无纺布的上下表面颠倒，热轧结构63包括第二下滚筒和第二上滚筒，第二下滚筒的表面为光面，第二上滚筒的表面具有多个相间隔设置地凸点。这样在预处理结构61中的下表面称为热轧结构63的上表面，上表面上设置有多个凹点，这样进一步增加了无纺布的透气性能。需要说明的是，无纺布的上下表面不能够同时加工为多个凹点的表面，这样无纺布会形成不透气的膜，反而不利于透气。需要说明的是，传输结构62包括滚筒，滚筒为冷滚筒，预处理结构的滚筒和热轧结构的滚筒为高温滚筒。
如图2所示，在本实施例的技术方案中，经过热轧结构63后的无纺布的伸长的范围在3％至180％之间。经过热轧结构63后的无纺布的撕裂强度的范围在2N至55N之间。经过热轧结构63后的无纺布的热熔比的范围在16％至35％之间。这样使得无纺布的撕裂效果更好，剪切比较容易。
如图2所示，在本实施例额技术方案中，无纺布的加工装置还包括收集滚筒90，收集滚筒90为冷滚筒。上述结构有利于无纺布的收集。附表为热轧前和热轧后的伸长率的数值。
测试样序号 原布伸长率％ 热轧处理后伸长率％
测试样1 121.4 15.2
测试样2 102.6 14.7
测试样3 114.2 13.3
测试样4 99.7 19.4
测试样5 123.9 16.2
测试样6 117.1 13.8
测试样7 101.2 14.5
测试样8 124.3 16.1
测试样9 119.5 17.3
测试样10 124.8 15.4
测试样11 126.8 14.9
测试样12 111.6 15.2
测试样13 107.9 14.7
测试样14 98.7 14.8
测试样15 119.4 14.3
测试样16 113.6 13.9
测试样17 112.0 16.2
测试样18 118.9 15.7
测试样19 117.4 15.2
测试样20 121.0 16.2
通过上述可知，无纺布的加工方法，无纺布为上述的无纺布，使用的无纺布加工装置为上述的无纺布加工装置，无纺布的加工方法包括：A.在无纺布加工装置内，加入无纺布芯的聚丙烯材料和无纺布皮层的聚丙烯材料。B.采用无纺布加工装置，通过热轧处理的方法加工无纺布。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (17)

  1. 一种无纺布，其特征在于，包括：
    无纺布芯(10)，所述无纺布芯(10)由聚丙烯材料制成；
    无纺布皮层(20)，所述无纺布皮层(20)至少位于所述无纺布芯(10)的上下表面，所述无纺布皮层(20)由聚丙烯材料制成；
    所述无纺布芯(10)的聚丙烯材料的伸长率不小于所述无纺布皮层(20)的聚丙烯材料的伸长率。
  2. 根据权利要求1所述的无纺布，其特征在于，所述无纺布的上表面设置有第一凹部。
  3. 根据权利要求2所述的无纺布，其特征在于，所述第一凹部为相间隔设置地多个凹点。
  4. 根据权利要求1至3中任一项所述的无纺布，其特征在于，所述无纺布的下表面设置有第二凹部。
  5. 根据权利要求4所述的无纺布，其特征在于，所述第二凹部为相间隔设置地多个凹点。
  6. 根据权利要求1所述的无纺布，其特征在于，所述无纺布芯(10)的聚丙烯材料的熔点不低于所述无纺布皮层(20)的聚丙烯材料的熔点。
  7. 一种无纺布的加工装置，其特征在于，所述加工装置加工的无纺布为权利要求1至6中任一项所述的无纺布，所述加工装置包括：
    无纺布芯的进料机构(30)；
    无纺布皮层的进料机构(40)；
    喷丝板机构(50)，所述无纺布芯的进料机构(30)和所述无纺布皮层的进料机构(40)均与所述喷丝板机构(50)相连通，以将所述无纺布芯的聚丙烯材料和所述无纺布皮层的聚丙烯材料进入所述喷丝板机构(50)形成混合后的聚丙烯；
    热轧处理机构(60)，混合后的聚丙烯通过所述热轧处理机构(60)形成无纺布。
  8. 根据权利要求7所述的无纺布的加工装置，其特征在于，所述无纺布芯的进料机构(30)和所述无纺布皮层的进料机构(40)均依次包括筛选结构(41)、熔化搅拌结构(42)、过滤结构(43)和计量结构(44)。
  9. 根据权利要求7所述的无纺布的加工装置，其特征在于，所述无纺布的加工装置还包括铺网机构(70)，所述铺网机构(70)设置在所述喷丝板机构(50)和所述热轧处理机构(60)之间。
  10. 根据权利要求9所述的无纺布的加工装置，其特征在于，所述铺网机构(70)设置在所述喷丝板机构(50)的下方。
  11. 根据权利要求9所述的无纺布的加工装置，其特征在于，所述无纺布的加工装置还包括吹风机构(80)，所述吹风机构(80)设置在所述喷丝板机构(50)和所述铺网机构(70)之间。
  12. 根据权利要求7所述的无纺布的加工装置，其特征在于，所述热轧处理机构(60)依次包括预处理结构(61)，所述预处理结构(61)包括第一下滚筒和第一上滚筒，所述第一下滚筒的表面为光面，所述第一上滚筒的表面具有多个相间隔设置地凸点。
  13. 根据权利要求12所述的无纺布的加工装置，其特征在于，所述热轧处理机构(60)还包括传输结构(62)和热轧结构(63)，所述传输结构(62)设置在所述预处理结构(61)和所述热轧结构(63)之间，并将无纺布的上下表面颠倒，所述热轧结构(63)包括第二下滚筒和第二上滚筒，所述第二下滚筒的表面为光面，所述第二上滚筒的表面具有多个相间隔设置地凸点。
  14. 根据权利要求13所述的无纺布的加工装置，其特征在于，经过所述热轧结构(63)后的所述无纺布的伸长的范围在3％至180％之间。
  15. 根据权利要求13所述的无纺布的加工装置，其特征在于，经过所述热轧结构(63)后的所述无纺布的撕裂强度的范围在2N至55N之间。
  16. 根据权利要求13所述的无纺布的加工装置，其特征在于，经过所述热轧结构(63)后的所述无纺布的热熔比的范围在16％至35％之间。
  17. 根据权利要求7所述的无纺布的加工装置，其特征在于，所述无纺布的加工装置还包括收集滚筒(90)，所述收集滚筒(90)为冷滚筒。
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