WO2020164642A2 - 一种吸收性卫生用品及其芯体 - Google Patents

一种吸收性卫生用品及其芯体 Download PDF

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WO2020164642A2
WO2020164642A2 PCT/CN2020/084357 CN2020084357W WO2020164642A2 WO 2020164642 A2 WO2020164642 A2 WO 2020164642A2 CN 2020084357 W CN2020084357 W CN 2020084357W WO 2020164642 A2 WO2020164642 A2 WO 2020164642A2
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core
water
absorbent
layer
cotton
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PCT/CN2020/084357
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English (en)
French (fr)
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WO2020164642A3 (zh
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刘瑛
梁国辉
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深圳市棉芯科技有限公司
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Publication of WO2020164642A3 publication Critical patent/WO2020164642A3/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium

Definitions

  • This application relates to the field of personal hygiene products, in particular to an absorbent hygiene product and the absorbent core contained therein.
  • the current core technology includes: 1. Wood pulp (commonly known as fluff pulp) + polymer water-absorbing resin hybrid structure (90% of global products); 2. Full core body (made of a variety of different types of polymer water-absorbing resin Or 1-2 kinds of polymer water-absorbent resin) structure (10% of global products, which has protruded in the Asian market in the past two years); 3. Semi-core structure (a mixture of the above two structures with half each).
  • Wood pulp + polymer water-absorbing resin structure (see Figure 1):
  • absorbent sanitary products on the market including diapers, pull-up pants, sanitary napkins, etc.
  • absorbent sanitary products on the market including diapers, pull-up pants, sanitary napkins, etc.
  • the materials used to make diapers usually include non-woven fabrics, wood pulp, polymer water-absorbing resins, chemical fiber spun fibers, PE breathable membranes, spandex yarns, adhesive stickers (front + left and right), waist elastic bands, etc.
  • the absorbent core of absorbent sanitary products is the core component (functional value core and price value core).
  • the core is divided into six layers: surface layer, diversion layer, wood pulp, polymer water-absorbing resin layer, water-locking layer, and bottom film.
  • wood pulp A paper pulp used as a water-absorbing medium after bleaching, dissolving, extracting, and softening wood. It is widely used in sanitary products.
  • the wood pulp core will increase the thickness of the diaper due to the large amount of wood pulp (the weight of a single piece exceeds 30 grams in L yards). Due to the characteristics of the process, it is easy to cause lumps and faults. This leads to leakage of urine. At the same time, wood pulp needs to be bleached during the production process, and it is easy to leave chemical substances caused by bleaching. Also due to the large amount of wood pulp used in the wood pulp core, excessive demand for forest resources is likely to occur. Polymer absorbent resin has poor degradability. At the same time, due to its polymerization process characteristics, absorbent resin will inevitably produce acrylic monomer residues. Acrylic monomers have obvious skin irritation, and the risk of red ass cannot be ignored.
  • the half-core structure is a combination of wood pulp (commonly known as fluff pulp) + polymer water-absorbing resin mixed structure and full-core structure, it also has the defects of the above two.
  • the present application provides a new core body, which does not use wood pulp, does not need to be bleached, and does not leave bleaching chemicals.
  • the core body reduces the amount of polymer absorbent resin by 30%, which greatly reduces the amount of polymer absorbent resin used as a whole.
  • it improves the comfort and water absorption of the product.
  • the thickness of the core body before and after water absorption is significantly lower. Based on existing similar products. Therefore, a new type of water-absorbent core is provided.
  • the specific technical solutions are as follows:
  • a water-absorbent core characterized in that the water-absorbent core comprises at least one layer of super absorbent resin and at least one layer of cotton fiber, the core absorbs 300ml of water, and the absorption time is 7-15 seconds, The drying time is 20-30 seconds, the thickness of the core body is 2-6mm, and the thickness after the water absorption is 500ml is 20-35mm. From the above parameters, it can be known that the performance of the core body exceeds the performance of all core bodies in the prior art.
  • the water-absorbent core is formed by spraying a granular polymer water-absorbing resin layer on and/or under the cotton fiber layer, and the upper polymer water-absorbing resin is 60-90 grams per square meter.
  • the cotton fiber layer is 100-140 grams per square meter, and the polymer water-absorbing resin layer sprayed below is 100-140 grams per square meter.
  • the polymer water-absorbing resin sprayed on the upper side is 75 grams per square meter
  • the cotton fiber layer is 125 grams per square meter
  • the polymer water-absorbing resin sprayed on the lower side is 125 grams per square meter.
  • the core is formed by superimposing N layers of cotton fiber layers and N+1 layers of super absorbent resin at intervals, where N is an integer, which is greater than or equal to 1.
  • the cotton fiber layer has a weight of 100-300 grams per square meter, the cotton fiber is fine-lint cotton, the fiber length is 23-33 mm, and the cotton fiber fineness is 3.7-4.2 with a unit micronaire value.
  • the cotton fiber layer weighs 200 grams per square meter.
  • the core body absorbs 300 ml of water, the absorption time is 10 seconds, and the absorption time is 25 seconds.
  • the thickness of the core body is 4 mm, and the thickness is 30 mm after water absorption of 500 ml.
  • a personal hygiene product characterized in that it comprises at least one layer of the core.
  • the personal hygiene products are diapers, pull-up pants or sanitary napkins.
  • the prior art has not found a technical solution for using cotton fiber to prepare a water-absorbent core, and the prior art does not provide any technical enlightenment that cotton fiber can be used to prepare a core.
  • This application creatively uses cotton fiber as the raw material for preparing the core, which improves the performance of the absorbent core and greatly reduces the manufacturing cost.
  • Cotton fiber is used to replace wood pulp or chemical fiber. And it is set that the spraying high molecular water absorbent resin on the upper surface is 60-90 grams per square meter, the cotton fiber is 100-140 grams per square meter, and the lower spraying high molecular water absorbent resin is 100-140 grams per square meter.
  • the existing products to achieve the same function only about 70% of the original polymer water-absorbing resin is needed, which reduces the amount of water-absorbing resin, reduces environmental pollution, and is easy to decompose.
  • the core structure of the present application replaces wood pulp and chemical fiber spun fibers with cotton fiber to create a new structure of absorbent sanitary products-absorbent core products, which are called "cotton core” structures.
  • the new structure of absorbent sanitary products can solve the various problems of the aforementioned various absorbent sanitary products with different core structures.
  • Cotton interpretation The main component of cotton is natural cellulose, and there are many natural hydrophilic voids between the fibers. Therefore, cotton has high water absorption and strong safety.
  • the combination of cotton and water-absorbent resin can be used as a complement.
  • One suction and one lock are more suitable for application. In infant products and hygiene products.
  • the cotton core structure is made of cotton, which is a natural material.
  • Cotton replaces wood pulp and chemical fiber spun fibers, and its absorption capacity is significantly better than wood pulp fibers.
  • Using cotton instead of wood pulp as the main filling material for absorbent sanitary products can greatly reduce fiber Usage amount.
  • the price of wood pulp is stable at around 7,500 yuan/ton, and 100,000 pieces of diapers can be produced according to the amount of 10 grams of wood pulp per ton of large-size diapers. Because of natural crops, cotton will fluctuate with the climate and economic environment. The current price fluctuates around 20,000 yuan/ton. According to the large-size diaper consumption, 4 grams of cotton per ton can produce 250,000 diapers. The prices of the two single-piece diapers are comparable.
  • the corresponding new technology is used to manufacture the core structural core of diapers, a technological innovation of production equipment, on the basis of greatly improving the efficiency, to achieve the three strong relationships of energy saving, emission reduction, safety and environmental protection, and comfort.
  • the core used in sanitary products is called "cotton core structure" for short.
  • This structure is composed of one or more layers of cotton + polymer water-absorbing resin structure composite structure, as follows:
  • the first layer uses dust-free paper.
  • the dust-free paper has unique physical properties, such as high elasticity, softness, hand feeling, excellent drape, and high water absorption performance. It is widely used in sanitary care products, special medical products, etc. field!
  • the second layer uses polymer water-absorbing resin, which can absorb tens of times its own weight of liquid, and has a strong water retention capacity, so it is also called super water-absorbing agent or high water-retaining agent.
  • super absorbent resin is a low crosslinking or partially crystalline polymer with many hydrophilic groups.
  • the sanitary field is mainly used as raw material for sanitary napkins and diapers.
  • the third layer uses cotton as the main filling material, and its main component is natural cellulose. Because there are many hydrophilic voids between the cotton fibers, the water absorption of cotton is high, which is 5 times that of wood pulp, and the cotton is breathable High, natural antibacterial, soft and comfortable hand feel, and has very good flow conductivity and instant water absorption.
  • the middle absorbent layer can be supplemented with the structure of the second layer and the third layer according to product design and use requirements.
  • the cotton layer can be filled with other absorbent materials according to the product design
  • the bottom layer is made of dust-free paper or non-woven fabric.
  • Non-woven fabric is a kind of non-woven fabric with a wide range of uses.
  • Non-woven fabric is also a new generation of environmentally friendly materials. It is breathable, flexible, light, non-combustible, easy to decompose, and non-toxic Non-irritating, recyclable and other high-quality features.
  • Polymer absorbent resin has a degradable time of 8-10 years, but because cotton has about 5 times stronger water absorption and bulkiness than fluff pulp, under the same absorption function, the amount of polymer absorbent resin can be reduced by 30% , Directly reduce the amount of raw materials used for polymer resins.
  • the performance of the product is completely beyond the existing product. It can absorb 300ml of water, the absorption time is 7-15 seconds, the drying time is 20-30 seconds, the thickness of the core is 2-6mm, and the thickness after the water absorption is 500ml. At 20-35mm, the cotton absorption speed is 5 times that of fluff pulp, which means that the contact time of urine through the baby's skin is greatly reduced. The absorption speed of traditional core products is about 35 seconds, while the new solution only needs 10 seconds. Be completely absorbed. Rapid absorption will greatly reduce the incidence of neonatal red ass.
  • Figure 1 is a schematic diagram of the mixed structure of wood pulp (commonly known as fluff pulp) + polymer water-absorbing resin;
  • Figure 2 is a schematic diagram of the whole core structure
  • Figure 3 is a schematic diagram of the half-core structure
  • Figure 4 is a schematic diagram of the cotton core structure.
  • Figure 4 the polymer water-absorbent resin is sprayed on and/or under the cotton fiber layer, which is mixed with the cotton fiber layer as a whole.
  • Figure 4 is a clear illustration, and the figures are separated by layering.
  • a water-absorbent core characterized in that the water-absorbent core comprises at least one layer of super absorbent resin and at least one layer of cotton fiber, the core absorbs 300ml of water, and the absorption time is 7-15 seconds, The drying time is 20-30 seconds, the thickness of the core body is 2-6mm, and the thickness after the water absorption is 500ml is 20-35mm.
  • the water-absorbent core is formed by spraying a granular polymer water-absorbing resin layer on and/or under the cotton fiber layer, and the upper polymer water-absorbing resin is 60-90 grams per cubic meter.
  • the cotton fiber layer is 100-140 grams per square meter, and the polymer water-absorbing resin layer sprayed below is 100-140 grams per square meter.
  • the polymer water-absorbing resin sprayed on the upper side is 75 grams per square meter
  • the cotton fiber layer is 125 grams per square meter
  • the polymer water-absorbing resin sprayed on the lower side is 125 grams per square meter.
  • the core is formed by superimposing N layers of cotton fiber layers and N+1 layers of super absorbent resin at intervals, where N is an integer, which is greater than or equal to 1.
  • the cotton fiber layer has a weight of 100-300 grams per square meter, the cotton fiber is fine-lint cotton, the fiber length is 23-33 mm, and the cotton fiber fineness is 3.7-4.2 with a unit micronaire value.
  • the cotton fiber layer weighs 200 grams per square meter.
  • the core body absorbs 300 ml of water, the absorption time is 10 seconds, and the absorption time is 25 seconds.
  • the thickness of the core body is 4 mm, and the thickness is 30 mm after water absorption of 500 ml.
  • a personal hygiene product characterized in that it comprises at least one layer of the core.
  • the personal hygiene products are diapers, pull-up pants or sanitary napkins.
  • Table 2 corresponds to different core structure thickness of a large size diaper

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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Abstract

一种吸收性卫生用品及其芯体，所述吸水性芯体包括至少一层高吸水性树脂层与至少一棉纤维层，该芯体吸收300ml水，吸完时间7～15秒，吸干时间20～30秒，所述芯体厚度2～6mm，吸水量500ml后厚度为20～35mm。所述混合体上下两面具有无尘纸层。采用该芯体，提高了芯体的吸水速度和吸水量，减少了吸水后的整体厚度，提高了使用的舒适性，并降低了成本，且更加环保。

Description

一种吸收性卫生用品及其芯体 技术领域
本申请涉及属于个人卫生用品领域，尤其涉及一种吸收性卫生用品以及其包含的吸水芯体。
背景技术
目前的芯体技术有：1.木浆(俗称绒毛浆)+高分子吸水树脂混合结构(全球产品中90％占比)；2、全芯体(是由多种不同型号的高分子吸水树脂或1-2种高分子吸水树脂组成)结构(全球产品中10％占比，近2年在亚洲市场突起)；3.半芯体结构(是以上2种结构各占一半混合而成)。
1、木浆+高分子吸水树脂结构(见图1)：
目前市场上吸收性卫生用品，包括纸尿裤，拉拉裤，卫生巾等，各种产品款式玲琅满目，但基本构造大同小异。以纸尿裤为例，制造纸尿裤的材料通常包括无纺布、木浆、高分子吸水树脂、化纤纺丝纤维、PE透气膜、氨纶丝、胶贴(前+左右)、腰围松紧带等。
吸收性卫生用品的吸收芯体是最核心(功能价值核心与价格价值核心)的组成部分。芯体分为六大层：面层，导流层，木浆，高分子吸水树脂层，锁水层，底膜。
木浆释义：通过漂白处理，溶解、抽提、软化木材后的一种用作吸水介质的纸浆，广泛用于卫生产品。
木浆芯体缺点：木浆芯体由于木浆填充量大，会导致纸尿裤厚度(以L码计单片克重超30克以上)增加，因其工艺的特点，易产生起坨断层现象，从而导致漏尿情况的产生。同时，木浆在生产过程中均需漂白，容易残留漂白所致的化学物质。也由于木浆芯体中木浆的使用量大，易产生对森林资源的过度索取。高分子吸收树脂的可降解性较差，同时，吸收树脂因其聚合工艺特征，难免会产生丙烯酸单体残留，而丙烯酸单体有明显皮肤刺激性，红屁屁的风险不容忽视。
2、全芯体结构(见图2)：
在亚洲特别是中国市场，用户对吸收性卫生用品追求薄，超薄，设计出了全芯体结构产品，全芯体可以使吸收性卫生用品变得更薄。采用化纤纺丝纤维与大 量胶粘剂进行高分子吸水树脂复合，木浆使用量减少，使得芯体结构更紧密且轻薄。
全芯体结构缺点：但也由于该工艺的应用，导致吸收后的吸水树脂紧密排布，导致再次吸收性能降低。全芯体的热溶胶比较多，会导致产品残留有胶粘剂的味道，引起人们不适。在使用过程中，由于高分子吸收树脂的膨胀与吸附，导致产品变硬，也影响了使用感受。作为石油加工产物，高分子吸收树脂的可降解性较差，同时，吸收树脂因其聚合工艺特征，难免会产生丙烯酸单体残留，而丙烯酸单体有明显皮肤刺激性，“红屁屁”的风险不容忽视。
3.半芯体结构(见图3)
由于半芯体结构是木浆(俗称绒毛浆)+高分子吸水树脂混合结构和全芯体结构两者组合而成，其同样存在上述两者存在的缺陷。
发明内容
针对上述缺陷，本申请提供一种新型芯体，其不使用木浆，不需要经过漂白，不残留漂白化学物质。同时，本芯体减少30％高分子吸水树脂用量，从整体上大大降低了高分子吸收树脂的使用量,同时，提高了产品的舒适性以及吸水性，本芯体吸水前后其厚度均明显低于现有的同类产品。因此，提供一种新型吸水性芯体，具体技术方案如下：
一种吸水性芯体，其特征在于，所述吸水性芯体包括至少一层高吸水性树脂层与至少一层棉纤维层体，该芯体吸收300ml水，吸完时间7～15秒，吸干时间20～30秒，所述芯体厚度2～6mm，吸水量500ml后厚度为20～35mm。有上述参数可知，该芯体的性能超越现有技术中所有的芯体的性能。
优选，所述吸水性芯体是在棉纤维层上面和/或下面喷洒颗粒状的高分子吸水性树脂层形成，所述上面的高分子吸水性树脂为60～90克每平方米，所述棉纤维层为100～140克每平方米，所述下面喷洒高分子吸水性树脂层为100～140克每平方米。
优选，所述上面喷洒的高分子吸水性树脂为75克每平方米，所述棉纤维层为125克每平方米，所述下面喷洒的高分子吸水性树脂为125克每平方米。
优选，所述芯体由N层棉纤维层和N+1层高吸水性树脂层间隔叠加而成，其 中N为整数，其大于等于1。
优选，棉纤维层每平方米克重100～300克，棉纤维为细绒棉，纤维长度为23～33mm，棉纤维细度为3.7～4.2，单位马克隆值。
优选，棉纤维层每平方米克重200克。
优选，该芯体吸收300ml水，吸完时间10秒，吸干时间25秒。
优选，所述芯体厚度4mm，吸水量500ml后厚度为30mm。
一种个人卫生用品，其特征在于，其包括至少一层所述的芯体。
优选，所述个人卫生用品为纸尿裤、拉拉裤或卫生巾。
现有技术中未发现采用棉纤维用于制备吸水性芯体的技术方案，现有技术中也未给出任何能够采用棉纤维制备芯体的技术启示。本申请创造性的采用棉纤维作为制备芯体的原料，改善了吸水性芯体的性能，且大幅度降低制造成本，属于个人卫生产品的一种开拓性发展，采用棉纤维取代木浆或化纤，并设定所述上面喷洒高分子吸水性树脂为60～90克每平方米，所述棉纤维为100～140克每平方米，所述下面喷洒高分子吸水性树脂为100-140克每平方米，相较于现有的产品达到相同功能时，只需要原来大概70％左右的高分子吸水树脂的量，降低吸水性树脂的用量，降低了对环境的污染，且易于分解。
本申请的芯体结构，以棉花纤维替代木浆与化纤纺丝纤维，创造新结构的吸收性卫生用品——吸收芯层产品，称为“棉芯体”结构。这种新结构的吸收性卫生用品可以解决目前所述的上述各种不同芯体结构的吸收性卫生用品存在的多种问题。
棉花释义：棉花主要成分是天然纤维素，纤维之间存在有许多天然亲水性空隙，因此棉花具有高吸水性与强安全性，棉花与吸水树脂结合可作为互补，一吸一锁更适合应用在婴幼儿产品及卫生用品。
棉芯体结构采用棉花，属于天然材质，棉花替代木浆与化纤纺丝纤维，吸收能力明显优于木浆纤维，以棉花替代木浆作为吸收性卫生用品的主要填充材料，可大幅降低纤维的使用量。木浆价格稳定在7500元/吨上下，按照大码纸尿裤用量10克木浆每片一吨可以生产10万片纸尿裤。而棉花因为天然农作物，会随着气候与经济环境波动，目前价格在20000元/吨上下波动，按照大码纸尿裤用量4克棉花每片一吨可以生产25万片纸尿裤。二者的单片纸尿裤价格相当。
同时采用与之相应的新工艺制造尿裤中最核心的结构芯体，对生产设备的一次技术革新，在大幅提升效能的基础上，达到节能减排、安全环保，舒适的三大强关系发明，是继木浆+高分子吸水树脂结构、全芯体结构、半芯体结构后的第四种吸收性卫生用品结构：以一层或多层棉花作为主要纤维成份所加工制成的吸收性卫生用品所用芯体，简称“棉芯体结构”。此结构采用一层或多层棉花+高分子吸水树脂结构复合结构组成，具体如下：
第一层使用无尘纸，无尘纸具有独特的物理性能，表现为高弹力，柔软、手感、垂感极佳，具有极高的吸水性能，被广泛应用于卫生护理用品，特种医用用品等领域！
第二层使用高分子吸水树脂，它能吸收其自身重量数十倍的液体，并具有很强的保水能力，所以它又被称为超强吸水剂或高保水剂。从化学结构上来讲，高吸水性树脂是具有许多亲水基团的低交联度或部分结晶的高分子聚合物。卫生领域主要用于卫生巾、纸尿裤的原材料。
第三层采用棉花作为主要填充材料，其主要成分是天然纤维素，由于棉花纤维之间有许多亲水性的空隙，所以棉的吸水性高，是木浆的5倍，并且棉花具有透气性高、天然抗菌性、手感柔软舒适且拥有非常好的导流性瞬间吸水等特点。
中间吸收层，可根据产品设计及使用需求，重复第二层第三层的结构补充。棉花层上下，可根据产品设计，填充其它吸水性材料
底层采用无尘纸，也可以使用无纺布，无纺布一种非织造布，用途广泛，无纺布也是新一代环保材料，具有透气、柔韧、质轻、不助燃、容易分解、无毒无刺激性、可循环再利用等优质特点。
有益效果：
1、环保减排：目前中国市场吸收性卫生用品存在极大的环保隐患，据中国造纸协会统计数据显示，中国每年产生的吸收性卫生用品高达700亿片，中国采用的垃圾填埋技术，每年填埋需要300万立方，体积约等于广东万绿湖的水容量。更可怕的是，整个吸收性卫生用品结构中，除了木浆降解时间为180天左右，其余材质长达8-10年，且吸收性卫生用品系列产品市场规模复合平均增长率为11％左右。而新的方案中，以棉花作为主要填充材料，其生物降解性能优异，3个月后可天然生物降解为有机肥料。且棉花在种植与生产过程，可有效收尾气排放(参 考棉花10大优势数据)。高分子吸收树脂，可降解时间为8～10年，但是因为棉花具有强于绒毛浆5倍左右的吸水性与蓬松性，在同样吸收功能的情况下，高分子吸水树脂使用量可以降低30％，直接减少高分子树脂的原材料使用量。
2、舒适健康：棉花的特性决定使用的舒适性。松、软的触感让新生儿健康快长。
3、功效性：产品的性能完全超出现有的产品，获得吸收300ml水，吸完时间7～15秒，吸干时间20～30秒，所述芯体厚度2～6mm，吸水量500ml后厚度为20-35mm，棉花吸收速度是绒毛浆5倍，也就是大幅减低尿液经婴儿皮肤的接触时间，传统芯体产品的吸收速度约为35秒，而新的方案则仅需10秒就可以做到完全吸收。快速吸收将大幅度降低新生儿红屁屁的发生率。
4、安全性：棉花材质的天然特性，其材料特性可不经漂白直接应用于吸收性卫生用品芯体的制造，有效降低化学品污染风险，会让产品的安全性能大幅提升，且可以完善中国吸收性卫生样品系列产品的国家标准。
5、产业扶持：目前我国吸收性卫生用品系列产品，核心原材料木浆80％需依赖进口。同时我国的新疆地区作为全球核心棉花产区，通过研发新产品，一方面降低了进口依赖的风险，另一方面，将会大幅提升农作物的工业化应用，棉花大量种植还会吸收尾气排放。
6、社会责任：在环保提升，性能提升，降解加速的前提下，推进节能减排，加大产业扶持。
附图说明
图1为木浆(俗称绒毛浆)+高分子吸水树脂混合结构示意图；
图2为全芯体结构示意图；
图3为半芯体结构示意图；
图4为棉芯体结构示意图。
图4中高分子吸水性树脂喷洒在棉纤维层上面和/或下面，其与棉纤维层混合为一体，图4为表示清楚，附图中采用分层的方式将两者区分开来。
附图中1、无尘纸；2、高分子吸水树脂和木浆混合；3、无纺布；4、高分子吸水性树脂；5、蓬松布；6、半芯体；7高分子木浆混合；8、棉花。
具体实施方式
一种吸水性芯体，其特征在于，所述吸水性芯体包括至少一层高吸水性树脂层与至少一层棉纤维层体，该芯体吸收300ml水，吸完时间7～15秒，吸干时间20～30秒，所述芯体厚度2～6mm，吸水量500ml后厚度为20～35mm。
优选，所述吸水性芯体是在棉纤维层上面和/或下面喷洒颗粒状的高分子吸水性树脂层形成，所述上面的高分子吸水性树脂为60～90克每立方米，所述棉纤维层为100～140克每平方米，所述下面喷洒高分子吸水性树脂层为100～140克每平方米。
优选，所述上面喷洒的高分子吸水性树脂为75克每平方米，所述棉纤维层为125克每平方米，所述下面喷洒的高分子吸水性树脂为125克每平方米。
优选，所述芯体由N层棉纤维层和N+1层高吸水性树脂层间隔叠加而成，其中N为整数，其大于等于1。
优选，棉纤维层每平方米克重100～300克，棉纤维为细绒棉，纤维长度为23～33mm，棉纤维细度为3.7～4.2，单位马克隆值。
优选，棉纤维层每平方米克重200克。
优选，该芯体吸收300ml水，吸完时间10秒，吸干时间25秒。
优选，所述芯体厚度4mm，吸水量500ml后厚度为30mm。
一种个人卫生用品，其特征在于，其包括至少一层所述的芯体。
优选，所述个人卫生用品为纸尿裤、拉拉裤或卫生巾。
以纸尿裤为例，以舒适为标准，对棉芯体结构的产品进行试验测试，部分实验结果如下：
表1不同芯体结构对应一件大码纸尿裤的厚度及重量
品牌 花王 好奇 帮宝适 金贝柔 露安适 新研发
芯体结构 木浆 木浆 木浆 半芯体 全芯体 棉芯体
重量(g) 35 36 35 30 28 24
厚度(mm) 10 12 12 10 8 3
表2对应一件大码纸尿裤不同芯体结构厚度
芯体结构 木浆 半芯体 全芯体 棉芯体
重量(g) 35 30 28 24
厚度(mm) 9～12 9～10 7～8 2～3
表3不同芯体结构对应纸尿裤的最大吸水量及吸水后达到的厚度
芯体结构 木浆 半芯体 全芯体 棉芯体
吸水量(ml) 350～400 400 380 500
厚度(mm) 50～60 60 55 30
表4不同芯体结构对应纸尿裤同等吸水量时的吸收时间
芯体结构 木浆 半芯体 全芯体 棉芯体
吸水量(ml) 300 300 300 300
吸完时间(s) 30～40 40 30 10
吸干时间(s) 90～100 80 60 25

Claims (10)

  1. 一种吸水性芯体，其特征在于，所述吸水性芯体包括至少一层高吸水性树脂层与至少一棉纤维层体，该芯体吸收300ml水，吸完时间7～15秒，吸干时间20～30秒，所述芯体厚度2～6mm，吸水量500ml后厚度为20～35mm。
  2. 根据权利要求1所述的吸水性芯体，其特征在于，所述吸水性芯体是在棉纤维层上面和/或下面喷洒颗粒状的高分子吸水性树脂层形成，所述上面的高分子吸水性树脂为60～90克每平方米，所述棉纤维层为100～140克每平方米，所述下面喷洒高分子吸水性树脂层为100～140克每平方米。
  3. 根据权利要求2所述的吸水性芯体，其特征在于，所述上面喷洒的高分子吸水性树脂为75克每平方米，所述棉纤维层为125克每平方米，所述下面喷洒的高分子吸水性树脂为125克每平方米。
  4. 根据权利要求1所述的吸水性芯体，其特征在于，所述芯体由N层棉纤维层和N+1层高吸水性树脂层间隔叠加而成，其中N为整数，其大于等于1。
  5. 根据权利要求1所述的吸水性芯体，其特征在于，棉纤维层每平方米克重100～300克，棉纤维为细绒棉，纤维长度为23～33mm，棉纤维细度为3.7～4.2，单位马克隆值。
  6. 根据权利要求5所述的吸水性芯体，其特征在于，棉纤维层每平方米克重200克。
  7. 根据权利要求1所述的吸水性芯体，其特征在于，该芯体吸收300ml水，吸完时间10秒，吸干时间25秒。
  8. 根据权利要求8所述的吸水性芯体，其特征在于，所述芯体厚度4mm，吸水量500ml后厚度为30mm。
  9. 一种个人卫生用品，其特征在于，其包括至少一层根据权利要求1～8任一所述的芯体。
  10. 根据权利要求9所述的个人卫生用品，其特征在于，所述个人卫生用品为纸尿裤、拉拉裤或卫生巾。
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