WO2017219671A1 - Noyau absorbant ayant une efficace propriété de guidage de flux et une efficace perméabilité à l'air - Google Patents

Noyau absorbant ayant une efficace propriété de guidage de flux et une efficace perméabilité à l'air Download PDF

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Publication number
WO2017219671A1
WO2017219671A1 PCT/CN2017/072159 CN2017072159W WO2017219671A1 WO 2017219671 A1 WO2017219671 A1 WO 2017219671A1 CN 2017072159 W CN2017072159 W CN 2017072159W WO 2017219671 A1 WO2017219671 A1 WO 2017219671A1
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WO
WIPO (PCT)
Prior art keywords
layer
nonwoven fabric
absorbent core
fabric layer
absorbent
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Application number
PCT/CN2017/072159
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English (en)
Chinese (zh)
Inventor
覃叙钧
唐亮
甘益
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湖南康程护理用品有限公司
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Application filed by 湖南康程护理用品有限公司 filed Critical 湖南康程护理用品有限公司
Publication of WO2017219671A1 publication Critical patent/WO2017219671A1/fr

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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
    • 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
    • A61F13/534—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 having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—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 having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer

Definitions

  • the invention belongs to the field of sanitary articles, and in particular relates to an absorbent core body with high flow conductivity and gas permeability.
  • the currently known absorbent cores for treating human waste can be roughly divided into two types.
  • One is a composite core body, as shown in Fig. 1, generally consisting of two outermost layers of dust-free paper 1, a middle layer nonwoven fabric 2, and two layers of SAP3 (superabsorbent resin).
  • the other is a cotton core body, as shown in Fig. 2, which consists of a dust-free paper 1 or a hydrophilic cloth wrapped with fluff pulp 13 and SAP3.
  • the above-mentioned core body is flat after absorbing liquid, and has a large contact area with the skin, and the amount of SAP that can be added is limited. Adding a large amount of SAP easily causes SAP to slide and has a distinct graininess, and the core body will be formed after the liquid absorption. Layers and slides pile up.
  • this type of core needs to increase the amount of hot melt adhesive when adding a large amount of SAP. Otherwise, a large amount of SAP is easy to move, resulting in uneven distribution, and too much hot melt adhesive will cause absorption speed. With the permeability is significantly reduced, and the hand feels stiff.
  • the two types of cores are flat after aspiration, even if the pattern is pressed on the core, it will be opened after the liquid absorption, so that the surface layer of the product contacts the skin. Large, the surface air of the skin can not fully circulate and form convection, the harmful gas volatilized by the liquid, easy to cause damage to the skin, and induce various skin diseases that are prone to skin.
  • this type of core expands in volume after SAP aspiration, and the particles are mobile. Even if the mesh or streaks are pressed on the absorbent body, the embossing is propped up after the liquid absorption, resulting in the inability to fix the position of the SAP particles. In the case of a slight external force, the SAP in the aspiration part is easily displaced, resulting in local accumulation of agglomerates and other parts of the fault, which not only affects the secondary absorption effect, but also affects the wearing comfort.
  • this type of core generally uses a large amount of fluff pulp. After liquid absorption, most of the liquid is instantaneously captured by the fluff pulp, which is difficult to diffuse to both ends, and it is easy to cause the core to partially expand and bulge into a bag shape.
  • the lock water is not strong, it is easy to cause liquid reverse osmosis, and it is easy to volatilize to damage the skin or affect the skin feel.
  • the present invention aims to provide an absorbent core which is capable of maximizing the flow conductivity and reducing the degree of plasticization of the nonwoven fabric, and which is soft, comfortable, and breathable.
  • an absorbent core having high-efficiency flow conductivity and gas permeability comprising a surface layer, a bottom layer and an absorbing layer between the surface layer and the bottom layer, the absorbing layer comprising the surface of the surface layer a non-woven fabric layer in which a super absorbent resin is uniformly spread in the nonwoven fabric layer;
  • the surface layer and the non-woven layer are laminated to form a composite layer, and the composite layer is provided with a flow guiding groove, the guiding groove dividing the core into a plurality of absorption regions;
  • a composite layer with a flow guiding groove is connected to the upper surface of the bottom layer
  • a highly water-absorptive resin is uniformly spread between the lower surface of the nonwoven fabric layer and the upper surface of the underlayer.
  • the above scheme improves the current planar absorption core into a three-dimensional absorption core, and uses a diversion groove to divide the core into a plurality of pieces, and expands to form a mountain-like shape after the first liquid absorption, and the potential energy of the liquid in the second liquid absorption. Under the action of natural downward flow, the liquid conduction absorption is accelerated, and the secondary absorption speed is effectively improved.
  • the higher protrusion formed after aspiration reduces the contact area of the top layer with the skin and improves the gas permeability.
  • SAP can be placed in a relatively small space to prevent SAP shifts. This makes it possible to add more SAP without using a large amount of hot melt adhesive, and has no graininess.
  • Adding more SAP between the lower surface of the nonwoven layer and the upper surface of the underlayer facilitates multiple absorption of the liquid core.
  • the non-woven fabric layer comprises a first non-woven fabric layer and a second non-woven fabric layer under the first non-woven fabric layer, and the first super-absorbent resin is evenly spread in the first non-woven fabric layer.
  • a second super absorbent resin is uniformly spread in the second nonwoven fabric layer, and a third super absorbent resin is evenly spread between the lower surface and the bottom layer of the second nonwoven fabric layer;
  • An air passage is formed between the first nonwoven fabric layer and the second nonwoven fabric layer.
  • the air passage acts as a ventilation and does not suffocate, and after suctioning, it can provide sufficient expansion space for the SAP.
  • the first, second, and third superabsorbent resins are different in type, and the liquid absorption speeds of the first, second, and third superabsorbent resins are gradually increased, and the liquid absorption speed from top to bottom is slowed down to Fast gradient difference.
  • the different types of SAP are layered in multiple layers, which reduces the pile-like graininess of SAP due to movement. According to the characteristics of SAP, the position and amount of SAP can be selected to adjust the absorption speed of the core as needed. Dryness and the like enhance the designability of the core performance. Thereby, the overall utilization rate of the core body is improved, and the absorption speed of the core body and the multiple liquid absorption effect are remarkably improved.
  • the flow guiding groove is S-shaped or linear.
  • the manner in which the surface layer and the nonwoven fabric layer are bonded together is one or more of hot rolling, ultrasonic bonding, seam sewing, and adhesive bonding.
  • connection between the composite layer with the flow guiding groove and the bottom layer is glue bonding.
  • the flow guiding grooves are made by thermal bonding.
  • the core does not thermally bond the surface layer, the nonwoven layer and the bottom layer, but the composite layer is firstly combined to minimize the plasticization of the nonwoven fabric, increase the softness and comfort, and improve the touch.
  • the design of the flow guiding groove can form a stable air passage on the surface of the core, which accelerates the rapid diffusion of the liquid along the channel and improves the overall utilization of the core.
  • SAP is divided into multiple layers to greatly improve the accommodability of the core, and the middle part of the material adopts the glueless bonding process, so that the overall sizing amount of the core body is significantly reduced, which is more conducive to liquid infiltration and effectively improve the absorption speed. .
  • the SAP layered blank in the core makes the matching form diversified, and can comprehensively design the model and application amount of SAP in each layer from the aspects of water saturation, liquid permeability and reverse osmosis, which greatly improves the core.
  • the core does not use fluff pulp. Most of the liquid is absorbed by SAP at the beginning, and a small part is temporarily stored by fiber non-woven fabric or dry paper, and then all absorbed and locked by SAP. Most of the harmful gases that can be volatilized will volatilize outward through the gas permeable film and the underlying nonwoven fabric, and the volatilization from the surface layer of the absorber is minimal, and the damage to the skin is minimized.
  • FIG. 1 is a structural view of an absorbent core in the prior art.
  • FIG. 2 is a structural view of another absorbent core in the prior art.
  • Figure 3 is a plan view of an absorbent core according to Embodiment 1 of the present invention.
  • Figure 4 is a cross-sectional view showing an absorbent core according to Embodiment 1 of the present invention.
  • Figure 5 is a cross-sectional view showing an absorbent core of Example 2 of the present invention.
  • Figure 6 is a plan view of an absorbent core according to Embodiment 3 of the present invention.
  • an absorbent core having high flow conductivity and gas permeability includes a surface layer 4, a bottom layer 5, and an absorbent layer between the surface layer 4 and the bottom layer 5.
  • the absorbent layer includes a nonwoven fabric layer 6 bonded to the lower surface of the surface layer 4, and a highly water-absorptive resin is uniformly spread in the nonwoven fabric layer 6.
  • the surface layer 4 and the non-woven fabric layer 6 are bonded together to form a composite layer, and the composite layer is provided with an S-shaped flow guiding groove 7, which divides the core into a plurality of absorption regions.
  • the composite layer with the flow guiding grooves 7 is connected to the upper surface of the bottom layer 5.
  • a super absorbent resin is uniformly spread between the lower surface of the nonwoven fabric layer 6 and the upper surface of the underlayer 5.
  • the manner in which the surface layer 4 and the nonwoven fabric layer 6 are bonded together is one or more of hot rolling, ultrasonic bonding, seam sewing, and adhesive bonding.
  • connection between the composite layer with the flow guiding grooves 7 and the bottom layer 5 is adhesively bonded.
  • the flow guiding groove 7 is made by thermal bonding.
  • the diversion groove 7 is used to divide the core into a plurality of pieces, and after the first absorption, the liquid expands to form a mountain-like shape. When the liquid is sucked for the second time, the liquid naturally conducts downward under the action of the gravitational potential energy, thereby accelerating the liquid conduction absorption.
  • SAP can be placed in a relatively small space to prevent SAP shifts. This makes it possible to add more SAP without using a large amount of hot melt adhesive, and has no graininess.
  • More SAP is added between the lower surface of the nonwoven fabric layer 6 and the upper surface of the bottom layer 5, which facilitates multiple absorption of the core.
  • Example 1 is repeated, except that the nonwoven fabric layer 6 includes a first nonwoven fabric layer 61 and a second nonwoven fabric layer 62 located below the first nonwoven fabric layer 61.
  • the first superabsorbent resin 9 is uniformly spread in the first nonwoven fabric layer 61.
  • the second superabsorbent resin 10 is uniformly spread in the second nonwoven fabric layer 62.
  • the third superabsorbent resin 11 is uniformly spread between the lower surface of the second nonwoven fabric layer 62 and the underlayer 5.
  • An air passage 12 is formed between the first nonwoven fabric layer 61 and the second nonwoven fabric layer 62 by a glueless process. Before the liquid is sucked, the air passage acts as a ventilation and does not suffocate, and after suctioning, it can provide sufficient expansion space for the SAP.
  • the first, second, and third superabsorbent resins are different in type, and the liquid absorption speeds of the first, second, and third superabsorbent resins are gradually increased, and the gradient from the top to the bottom is slow to fast. difference.
  • SAP Different types are laid in multiple layers, which reduces the pile-like graininess of SAP due to movement.
  • the position and amount of SAP can be selected to adjust the absorption speed and dryness of the core as needed. Etc., enhances the designability of core performance.
  • Example 1 or 2 is repeated, except that the flow guiding groove 7 is linear.

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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)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

L'invention porte également sur un noyau absorbant ayant une propriété de guidage de flux et une perméabilité à l'air efficaces, comprenant une couche de surface (4), une couche inférieure (5), et une couche absorbante entre la couche de surface (4) et la couche inférieure (5). La couche absorbante comprend une couche de tissu non tissé (6) fixée à la surface inférieure de la couche de surface (4); un polymère super-absorbant est uniformément dispersé dans la couche de tissu non tissé (6); la couche de surface (4) et la couche de tissu non tissé (6) sont attachées l'une à l'autre pour former une couche composite; des rainures de guidage d'écoulement (7) sont formées sur la couche composite et divisent le noyau absorbant en une pluralité de régions absorbantes; la couche composite possédant les rainures de guidage d'écoulement (7) est reliée à la surface supérieure de la couche inférieure (5); un polymère super-absorbant est uniformément dispersé entre la surface inférieure de la couche de tissu non tissé (6) et la surface supérieure de la couche inférieure (5). Selon le noyau absorbant, l'étendue de plastification du tissu non tissé (6) peut être réduite au minimum, la souplesse et le confort peuvent être améliorés et l'impression tactile peut être améliorée. Des polymères Super-absorbants ayant des propriétés différentes sont dispersés de manière appariée entre les couches du noyau absorbant, et des protubérances évidentes seraient formées après que le liquide ait été absorbé par le noyau absorbant; le noyau absorbant est douce et confortable et présente une bonne perméabilité à l'air, une vitesse d'étalement élevée de liquide absorbée, et une petite zone de contact avec la peau.
PCT/CN2017/072159 2016-06-23 2017-01-23 Noyau absorbant ayant une efficace propriété de guidage de flux et une efficace perméabilité à l'air WO2017219671A1 (fr)

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CN201620624024.9 2016-06-23
CN201620624024.9U CN206007482U (zh) 2016-06-23 2016-06-23 一种具备高效导流性与透气性的吸收芯体

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108403301A (zh) * 2018-01-31 2018-08-17 东莞市润葆纸业有限公司 一种新型高吸收树脂芯体材料及加工工艺
CN108743046A (zh) * 2018-05-31 2018-11-06 湖南康程护理用品有限公司 一种复合芯体及其制造方法
CN108773117A (zh) * 2018-08-24 2018-11-09 美佳德科技（无锡）有限公司 一种高效吸水无纺布
CN114569368A (zh) * 2022-03-21 2022-06-03 北京倍舒特妇幼用品有限公司 一种碳纤维医用护理垫产品及其制备方法
CN116725777A (zh) * 2023-08-09 2023-09-12 露乐健康科技股份有限公司 透气芯体及透气纸尿裤
CN117045433A (zh) * 2023-10-12 2023-11-14 露乐健康科技股份有限公司 一种透气干爽的3d吸收芯体及其加工方法

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CN105919733B (zh) * 2016-06-23 2018-10-02 湖南康程护理用品有限公司 一种具备高效导流性与透气性的吸收芯体及其制造方法
CN108042261A (zh) * 2018-01-16 2018-05-18 佛山市啟盛卫生用品有限公司 一种表面呈梳状造型的新型吸收体及其制备方法
CN109394429A (zh) * 2018-11-13 2019-03-01 佛山市南海区佳朗卫生用品有限公司 一种扩散引导槽芯体及纸尿裤
CN109394430A (zh) * 2018-11-13 2019-03-01 佛山市南海区佳朗卫生用品有限公司 一种多层式扩散引导槽芯体及纸尿裤
CN109481155A (zh) * 2018-11-19 2019-03-19 清远市腾科机械设备有限公司 一种吸收性物品芯体
CN110179594A (zh) * 2019-05-31 2019-08-30 重庆百亚卫生用品股份有限公司 一种吸收型芯体结构
CN111118736A (zh) * 2019-11-22 2020-05-08 深圳市棉芯科技有限公司 一种无胶针刺吸收芯体工艺和设备

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CN105919733A (zh) * 2016-06-23 2016-09-07 湖南康程护理用品有限公司 一种具备高效导流性与透气性的吸收芯体及其制造方法

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US5294478A (en) * 1992-12-18 1994-03-15 Kimberly-Clark Corporation Multi-layer absorbent composite
CN1784190A (zh) * 2003-05-09 2006-06-07 利卫多株式会社 一次性吸收性物品
CN101491472A (zh) * 2008-01-25 2009-07-29 覃叙钧 一种处理人体排泄物的吸收体及其制造方法
CN105919733A (zh) * 2016-06-23 2016-09-07 湖南康程护理用品有限公司 一种具备高效导流性与透气性的吸收芯体及其制造方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108403301A (zh) * 2018-01-31 2018-08-17 东莞市润葆纸业有限公司 一种新型高吸收树脂芯体材料及加工工艺
CN108743046A (zh) * 2018-05-31 2018-11-06 湖南康程护理用品有限公司 一种复合芯体及其制造方法
CN108773117A (zh) * 2018-08-24 2018-11-09 美佳德科技（无锡）有限公司 一种高效吸水无纺布
CN114569368A (zh) * 2022-03-21 2022-06-03 北京倍舒特妇幼用品有限公司 一种碳纤维医用护理垫产品及其制备方法
CN116725777A (zh) * 2023-08-09 2023-09-12 露乐健康科技股份有限公司 透气芯体及透气纸尿裤
CN116725777B (zh) * 2023-08-09 2023-11-24 露乐健康科技股份有限公司 透气芯体及透气纸尿裤
CN117045433A (zh) * 2023-10-12 2023-11-14 露乐健康科技股份有限公司 一种透气干爽的3d吸收芯体及其加工方法
CN117045433B (zh) * 2023-10-12 2024-01-19 露乐健康科技股份有限公司 一种透气干爽的3d吸收芯体及其加工方法

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