CN110731863A - glue-free needle-punched absorption core and sanitary product containing the same - Google Patents

glue-free needle-punched absorption core and sanitary product containing the same Download PDF

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Publication number
CN110731863A
CN110731863A CN201911119558.0A CN201911119558A CN110731863A CN 110731863 A CN110731863 A CN 110731863A CN 201911119558 A CN201911119558 A CN 201911119558A CN 110731863 A CN110731863 A CN 110731863A
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CN
China
Prior art keywords
layer
needling
glue
core
cotton fiber
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Pending
Application number
CN201911119558.0A
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Chinese (zh)
Inventor
刘瑛
梁国辉
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Liu Ying
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Shenzhen Cotton Core Technology Co Ltd
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Publication date
Application filed by Shenzhen Cotton Core Technology Co Ltd filed Critical Shenzhen Cotton Core Technology Co Ltd
Priority to CN201911119558.0A priority Critical patent/CN110731863A/en
Publication of CN110731863A publication Critical patent/CN110731863A/en
Priority to PCT/CN2020/083138 priority patent/WO2021093257A1/en
Pending legal-status Critical Current

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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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
    • 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
    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • A61F2013/530343—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 being made in fibre but being not pulp being natural fibres
    • A61F2013/53035—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 being made in fibre but being not pulp being natural fibres of cotton
    • 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
    • A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/530489—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 superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material
    • A61F2013/530496—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 superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material being fixed to fibres

Abstract

non-glue needle-punched absorption core body, which comprises a surface layer non-woven fabric layer, a middle layer and a bottom layer non-woven fabric layer, wherein the middle layer comprises at least cotton fiber layers and at least super absorbent resin particle layers, the core body is formed by at least needle-punching procedures, through the needle-punching process, the bottom layer non-woven fabric and the cotton mesh fabric are combined in an interweaving way, the glue-gluing process of the traditional composite core is not used, the existence of chemical substances in the product is reduced again, hot melt glue is not contained any more, and the non-glue needle-punched absorption core.

Description

glue-free needle-punched absorption core and sanitary product containing the same
Technical Field
The application relates to the field of personal hygiene products, in particular to glue-free acupuncture absorption cores and a hygiene product comprising the cores.
Background
At present, the health supplies core mainly divide into wood pulp core and compound core two main types: the wood pulp core body is formed by mixing fluff pulp and high molecular water-absorbent resin (SAP), layering and zoning do not exist, the water absorption effect of the wood pulp core body is good, but the fluff pulp and the SAP cannot be fixed due to the fact that the structure of the wood pulp core body is relatively loose and no adhesive is added, and therefore the phenomena of lumping and faulting can occur in the using process; the composite core body is composed of dust-free paper, non-woven fabric and SAP, each layer of material is bonded by hot melt adhesive, the core body contains a large amount of SAP to ensure the water absorption capacity of the paper diaper, and the whole body expands after absorbing water and is flat without lump. The disadvantages of using a composite core are that the process is more complex, the production speed of the equipment is low, and the cost is higher compared with the traditional core. Meanwhile, because the composite core body has a large amount of sizing, harmful substances such as formaldehyde, volatile organic compounds and the like can be introduced in the production process, and the influence on the body health of a user is brought.
Disclosure of Invention
The invention combines the advantages of high absorptivity and strong flow conductivity of the wood pulp core and ultrathin non-fault of the composite core, and achieves the purpose of no glue application on the premise of ensuring excellent product quality by the interweaving technology of cotton and non-woven fabrics.
A non-glue needle-punched absorbent core, which is characterized in that the core comprises a surface layer non-woven fabric layer, a middle layer and a bottom layer non-woven fabric layer, the middle layer comprises at least cotton fiber layers and at least super absorbent resin particle layers, and the core is formed by at least needle-punching processes.
The method is formed by at least needling processes, and comprises the steps of needling the bottom non-woven fabric after a cotton fiber layer is laid and super absorbent resin particles are scattered, and needling the bottom non-woven fabric by using a positive needling machine after cotton fiber layers and a surface non-woven fabric layer are laid.
The needling process comprises the steps of independently needling the surface layer and the bottom layer, wherein the needling does not penetrate through the middle layer;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, wherein the needling of the surface layer and the bottom layer is not crossed;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, and crossing the surface layer and the bottom layer by two times of needling;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, and penetrating the middle layer by the surface needles;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, and penetrating the middle layer by bottom needles;
the needling procedure comprises directly needling the bottom layer to penetrate the bottom layer, the middle layer and the surface layer;
the needling procedure comprises that the surface layer is directly needled to penetrate through the surface layer, the middle layer and the bottom layer;
the needling procedure comprises the direct needling of the middle layer, no needling of the bottom layer and the surface layer, and the middle layer which is punctured is wrapped by the bottom layer and the surface layer.
The cotton fiber layer has a basis weight of about 60g/m2。
And the needling procedure of at least times is to lay each layer of the core body and then to perform needling by a positive needling machine or/and a barb machine.
The high water-absorbent resin particle layer is formed by spraying granular high water-absorbent resin on the cotton fiber layer.
The cotton fiber layer is N layers, the high water absorption resin particle layer is N-1 layers, the cotton fiber layer and the high water absorption resin particle layer are arranged at intervals, and N is an integer of 1-5.
personal hygiene article, comprising at least layers of said core.
The personal sanitary article is a paper diaper, a pull-up diaper or a sanitary towel.
Has the advantages that:
the cotton carding and lapping are controlled quantitatively by the transformation of the existing cotton carding equipment to achieve low-quantitative forming and form cotton meshes (the quantitative is about 60 g/m)2) And laid on the bottom layer non-woven fabric. And (3) quantitatively spraying water-absorbent resin on the cotton mesh by combining the application of the existing composite core body powder spraying machine. The needling process is applied, and the inherent characteristic of the cotton needle barbs drives the cotton fibers in the net sheet to be interwoven with the bottom non-woven fabric, so that the water-absorbent resin is dispersed, and the aim of uniform distribution is fulfilled.
On the basis of forming the bottom layer structure, the processes of cotton laying, powder scattering, surface layer non-woven fabric laying, needle punching and the like are repeated, so that the surface layer structure and the bottom layer structure are combined, and finally glue-free cotton interweaving composite core bodies are manufactured.
Through the needling process, the bottom layer non-woven fabric and the cotton mesh fabric are combined in an interweaving mode, the traditional gluing process of the composite core is not used, the existence of chemical substances in the product is reduced again, hot melt adhesive is not contained any more, and the product is more environment-friendly (only a small amount of granular water-absorbing resin is contained in the product).
The product contains less harmful substances (no glue is achieved), the water-absorbing resin is reduced (saved), and most raw materials of the product are degradable (except the water-absorbing resin, the degradability is poor).
The technological process belongs to the technological creation and the development of new products, production equipment adopted in the process is mostly mature and applied to the field of cotton product production, and the key points are parameter adjustment of equipment and exploration of needling density and speed.
The scheme is a research result of a new -generation sanitary product core, fully considers the raw material field, the product characteristics and the consumer demand, and fully researches the aspects of environmental protection, resource utilization and the like.
The cotton is used as an important agricultural product resource in China, is planted in Xinjiang and other places in China in a large quantity, and is high in annual output and excellent in quality. However, in the textile industry, in the aspect of material application, in recent years, the application of chemical fibers is favored, so that the supply of cotton in China is greater than the demand, the economic income of cotton growers is seriously influenced, and meanwhile, unnecessary social contradiction is brought. The cotton has the characteristics of short planting period, long fiber, good water absorption effect and the like, the water absorption of the cotton with the same volume is more than that of wood pulp, and the cotton serving as an absorption core body is applied to hygienic products and can fully exert the characteristics of softness, naturalness, water absorption, high strength and the like.
The proportion of the cotton and the water-absorbent resin is matched, and the cotton and the water-absorbent resin can play roles of high absorption, quick water locking and the like. The cotton fiber interweaving process is utilized, cotton serves as a main body structure for bearing the water-absorbent resin, and the occurrence of faults in the using process of the sanitary product is reduced. The application of the cotton needling process and the use of a large amount of lower adhesive glue reduce the skin irritation and the release of toxic and harmful substances possibly brought in the use process of the sanitary product. Meanwhile, the process has the advantages that the high water absorption effect of cotton is utilized, the use proportion of the water-absorbent resin is reduced, the natural decomposition period of the waste sanitary products is greatly reduced, and the ecological environment protection and the development of the green sanitary product industry are facilitated.
Drawings
FIG. 1 is a schematic representation of an embodiment of the present application;
FIG. 2 is a second schematic diagram of an embodiment of the present application;
FIG. 3 is a third schematic diagram of an embodiment of the present application;
FIG. 4 is a fourth schematic diagram of an embodiment of the present application;
FIG. 5 is a fifth schematic view of an embodiment of the present application;
FIG. 6 shows a sixth embodiment of the present application;
fig. 7 is a seventh schematic view of an embodiment of the present application.
The above structures are schematic views, in which the resin particles are dispersed in the cotton layer by needling.
1-non-woven fabric 2-cotton layer 3-super absorbent resin particles 4-non-woven fabric 5-cotton fiber penetrating through upper and lower layers and/or non-woven fabric layers caused by needle punching.
Detailed Description
A non-glue needle-punched absorbent core, which is characterized in that the core comprises a surface layer non-woven fabric layer, a middle layer and a bottom layer non-woven fabric layer, the middle layer comprises at least cotton fiber layers and at least super absorbent resin particle layers, and the core is formed by at least needle-punching processes.
And cotton fiber layers and the super absorbent resin particle layers of the middle layer and the surface layer or the bottom layer of non-woven fabric are formed by needling.
The layers of cotton fiber layers of the middle layer and the surface layer or the bottom layer of non-woven fabric are formed by needle punching.
The needled face layer and the bottom layer are connected by a cotton fiber layer.
The method is formed by at least needling processes, and comprises the steps of needling by a barb machine after a cotton fiber layer is laid on the bottom non-woven fabric and super absorbent resin particles are sprinkled, and needling by a positive needling machine after layers of cotton fiber layer and a surface non-woven fabric layer are laid.
The needling process comprises the steps of independently needling the surface layer and the bottom layer, wherein the needling does not penetrate through the middle layer;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, wherein the needling of the surface layer and the bottom layer is not crossed;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, and crossing the surface layer and the bottom layer by two times of needling;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, and penetrating the middle layer by the surface needles;
the needling process comprises the steps of independently needling the surface layer and the bottom layer, and penetrating the middle layer by bottom needles;
the needling procedure comprises directly needling the bottom layer to penetrate the bottom layer, the middle layer and the surface layer;
the needling procedure comprises that the surface layer is directly needled to penetrate through the surface layer, the middle layer and the bottom layer;
the needling procedure comprises the direct needling of the middle layer, no needling of the bottom layer and the surface layer, and the middle layer which is punctured is wrapped by the bottom layer and the surface layer.
The cotton fiber layer has a basis weight of about 60g/m2。
The needling procedure comprises that the surface layer is directly needled to penetrate through the surface layer and the bottom layer;
and the needling procedure of at least times is to lay each layer of the core body and then to perform needling by a positive needling machine or/and a barb machine.
Preferably, the super absorbent resin particle layer is formed by spraying a particulate super absorbent resin on the cotton fiber layer.
The cotton fiber layer is N layers, the high water absorption resin particle layer is N-1 layers, the cotton fiber layer and the high water absorption resin particle layer are arranged at intervals, and N is an integer of 1-5.
personal hygiene article, comprising at least layers of said core.
Preferably, the personal hygiene product is a paper diaper, a pull-up diaper or a sanitary napkin.
The barbs are approximately 1000-.
Has the advantages that:
the cotton carding and lapping are controlled quantitatively by the transformation of the existing cotton carding equipment to achieve low-quantitative forming and form cotton meshes (the quantitative is about 60 g/m)2) And laid on the bottom layer non-woven fabric. And (3) quantitatively spraying water-absorbent resin on the cotton mesh by combining the application of the existing composite core body powder spreader. The needling process is applied to drive the cotton fibers in the net sheet to be crossed with the bottom non-woven fabric by the inherent characteristics of the cotton needle barbsThe water-absorbent resin is dispersed and uniformly distributed at the same time.
On the basis of forming the bottom layer structure, the processes of cotton laying, powder scattering, surface layer non-woven fabric laying, needle punching and the like are repeated, so that the surface layer structure and the bottom layer structure are combined, and finally glue-free cotton interweaving composite core bodies are manufactured.
Through the needling process, the bottom layer non-woven fabric and the cotton mesh fabric are combined in an interweaving mode, the traditional gluing process of the composite core is not used, the existence of chemical substances in the product is reduced again, hot melt adhesive is not contained any more, and the product is more environment-friendly (only a small amount of granular water-absorbing resin is contained in the product).
The product contains less harmful substances (no glue is achieved), the water-absorbing resin is reduced (saved), and most raw materials of the product are degradable (except the water-absorbing resin, the degradability is poor).
The technological process belongs to the technological creation and the development of new products, production equipment adopted in the process is mostly mature and applied to the field of cotton product production, and the key points are parameter adjustment of equipment and exploration of needling density and speed.
The scheme is a research result of a new -generation sanitary product core, fully considers the raw material field, the product characteristics and the consumer demand, and fully researches the aspects of environmental protection, resource utilization and the like.
The cotton is used as an important agricultural product resource in China, is planted in Xinjiang and other places in China in a large quantity, and is high in annual output and excellent in quality. However, in the textile industry, in the aspect of material application, in recent years, the application of chemical fibers is favored, so that the supply of cotton in China is greater than the demand, the economic income of cotton growers is seriously influenced, and meanwhile, unnecessary social contradiction is brought. The cotton has the characteristics of short planting period, long fiber, good water absorption effect and the like, the water absorption of the cotton with the same volume is more than that of wood pulp, and the cotton serving as an absorption core body is applied to hygienic products and can fully exert the characteristics of softness, naturalness, water absorption, high strength and the like.
The barbs are approximately 1000-.
The main influences of the needling density are the hand feeling and the bonding strength of the fabric.
The proportion of the cotton and the water-absorbent resin is matched, and the cotton and the water-absorbent resin can play roles of high absorption, quick water locking and the like. The cotton fiber interweaving process is utilized, cotton serves as a main body structure for bearing the water-absorbent resin, and the occurrence of faults in the using process of the sanitary product is reduced. The application of the cotton needling process and the use of a large amount of lower adhesive glue reduce the skin irritation and the release of toxic and harmful substances possibly brought in the use process of the sanitary product. Meanwhile, the process has the advantages that the high water absorption effect of cotton is utilized, the use proportion of the water-absorbent resin is reduced, the natural decomposition period of the waste sanitary products is greatly reduced, and the ecological environment protection and the development of the green sanitary product industry are facilitated.

Claims (10)

  1. The glue-free needle-punched absorbent core is characterized by comprising a surface layer non-woven fabric layer, a middle layer and a bottom layer non-woven fabric layer, wherein the middle layer comprises at least cotton fiber layers and at least super absorbent resin particle layers, and the core is formed by at least needle-punching procedures.
  2. 2. The kinds of non-glue punched absorbent cores of claim 1, which is formed by at least punching processes, comprising punching with a barbed machine after laying a cotton fiber layer on a bottom non-woven fabric and spraying a super absorbent resin particle layer, and punching with a forward punching machine after laying cotton fiber layers and a top non-woven fabric layer.
  3. 3. The glue-free needled absorbent core of claim 1, wherein the needling process comprises needling the face layer alone and needling the bottom layer alone without penetrating the middle layer or needling the face layer without intersecting with needling the bottom layer or needling the face layer with intersecting with needling the bottom layer or needling the middle layer with penetrating the middle layer, the bottom layer without needling the face layer, and wherein the needling process comprises needling the face layer alone and needling the bottom layer alone with penetrating the middle layer, and wherein the needling process comprises needling the face layer alone and needling the bottom layer alone and needling the face layer with penetrating the middle layer.
  4. 4. The glue-free needled absorbent core of claim 1, wherein the needling process comprises direct needling of the bottom layer, penetration of the bottom layer, middle layer, and top layer or the needling process comprises direct needling of the top layer, penetration of the top layer, middle layer, and bottom layer.
  5. 5. The glue-free needled absorbent core of claim 1, wherein said cotton fiber layer has a basis weight of about 60g/m2。
  6. 6. The glue-free needled absorbent core of claim 1, wherein each of the layers of the core has been laid and needled through a forward needling machine and/or a barbed machine through at least needling passes.
  7. 7. The kinds of non-glue needling absorption core body of claim 1, wherein the super absorbent resin particle layer is formed by spraying granular high polymer absorbent resin on the cotton fiber layer.
  8. 8. The kinds of non-glue acupuncture absorption cores of claim 1, wherein the cotton fiber layer is N layers, the super absorbent resin particle layer is N-1 layers, the cotton fiber layer and the super absorbent resin particle layer are arranged at intervals, and N is an integer of 1-5.
  9. A personal hygiene article of claim 9, , comprising a core as claimed in any of the preceding claims .
  10. 10. The personal hygiene article of claim 9, being a diaper, a pull-up pant or a sanitary napkin.
CN201911119558.0A 2019-11-15 2019-11-15 glue-free needle-punched absorption core and sanitary product containing the same Pending CN110731863A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201911119558.0A CN110731863A (en) 2019-11-15 2019-11-15 glue-free needle-punched absorption core and sanitary product containing the same
PCT/CN2020/083138 WO2021093257A1 (en) 2019-11-15 2020-04-03 Gel-free needle-punching absorbent core and sanitary product comprising the core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911119558.0A CN110731863A (en) 2019-11-15 2019-11-15 glue-free needle-punched absorption core and sanitary product containing the same

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WO2021093257A1 (en) * 2019-11-15 2021-05-20 深圳市棉芯科技有限公司 Gel-free needle-punching absorbent core and sanitary product comprising the core
CN113116638A (en) * 2021-04-26 2021-07-16 嘉兴学院 Moisture-permeable soft composite core and preparation method thereof

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