CN102159757A - Method of manufacturing nonwoven web perforated without physical or thermal deformation and absorbent article having such nonwoven web - Google Patents

Method of manufacturing nonwoven web perforated without physical or thermal deformation and absorbent article having such nonwoven web Download PDF

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Publication number
CN102159757A
CN102159757A CN2009801366370A CN200980136637A CN102159757A CN 102159757 A CN102159757 A CN 102159757A CN 2009801366370 A CN2009801366370 A CN 2009801366370A CN 200980136637 A CN200980136637 A CN 200980136637A CN 102159757 A CN102159757 A CN 102159757A
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CN
China
Prior art keywords
perforation
nonwoven web
top flat
absorbent commodity
millimeters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2009801366370A
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Chinese (zh)
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CN102159757B (en
Inventor
金圣燮
李元永
黄鱼渊
陈在承
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Yuhan Kimberly Ltd
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Yuhan Kimberly Ltd
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Publication of CN102159757A publication Critical patent/CN102159757A/en
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • A61F13/53708Absorbent 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 the layer having a promotional function on liquid propagation in at least one direction
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • A61F13/53743Absorbent 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 characterised by the position of the layer relative to the other layers
    • A61F13/53747Absorbent 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 characterised by the position of the layer relative to the other layers the layer is facing the topsheet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/26Perforating by non-mechanical means, e.g. by fluid jet
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D04H1/495Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet for formation of patterns, e.g. drilling or rearrangement
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H13/00Other non-woven fabrics
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203Properties of the article, e.g. stiffness or absorbency
    • A61F2013/15284Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
    • A61F2013/15406Basis weight
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • A61F13/53708Absorbent 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 the layer having a promotional function on liquid propagation in at least one direction
    • A61F2013/53721Absorbent 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 the layer having a promotional function on liquid propagation in at least one direction with capillary means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • A61F2013/53765Absorbent 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 characterized by its geometry
    • A61F2013/53782Absorbent 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 characterized by its geometry with holes

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Nonwoven Fabrics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The present invention provides a method of manufacturing a nonwoven web perforated without physical or thermal deformation and an absorbent article including such a nonwoven web. The absorbent article of the present invention comprises the following: a liquid-permeable top sheet; a liquid-impermeable back sheet; an absorbent body disposed between the top sheet and the back sheet for absorbing a liquid permeating through the top sheet; and a surge layer disposed between the top sheet and the absorbent body for delivering the liquid permeating through the top sheet to the absorbent body. The surge layer includes a nonwoven web perforated without physical or thermal deformation.

Description

A kind of manufacture method of the perforation nonwoven web that does not have physics or a thermal deformation and the absorbent commodity that contains this nonwoven web
Technical field
The present invention relates to not have the manufacture method of perforation nonwoven web of physics or thermal deformation and the absorbent commodity that contains this nonwoven web.More specifically say, the present invention relates to absorbent commodity such as diaper, sanltary towel, liner etc., this absorbent commodity contains the nonwoven web of the perforation of no physics or thermal deformation, makes the big quantity of fluid of discharging from user's health also successfully be delivered to absorber by rapid the collection simultaneously.
Background technology
Fig. 1 shows an example of traditional absorbent commodity.Referring to Fig. 1, traditional absorbent commodity 10 comprises: the liquid permeability top flat 2 of bodyside; The liquid-tight egative film 4 in the outside; Be arranged in the absorber 6 between described top flat 2 and the egative film 4; And be arranged in surge layer 8 between described top flat 2 and the absorber 6.
Top flat 2 can contact user's skin.Top flat 2 is used to provide flexibility, thereby can feel comfortable when the user wears these article.Absorber 6 is used for the liquid that also sees through top flat 2 that fast Absorption is discharged from user's health, so that liquid is remained in wherein.Absorber 6 can be made by paper pulp fiber or the paper pulp fiber that is mixed with superabsorbent particles.Egative film 4 is arranged in the below of absorber 6.Egative film 4 can be made by liquid-tight membrane material, thereby the liquid that can not that remains in the absorber 6 is spilt.
Surge layer 8 is used for absorbing liquid apace and the liquid that is absorbed being delivered to absorber, becomes wet with the skin that prevents the user.For this reason, surge layer 8 can constitute by nonwoven web low by fibre density and that bulkiness is high.Yet, to make such surge layer and need use the high material of basic weight, this causes high production cost.In order to reduce its production cost when keeping or improving its performance, surge layer 8 can be made of the nonwoven web of perforation.
According to prior art, surge layer is made of the nonwoven web of perforation.Such nonwoven web can perhaps use the pin that heats to bore a hole on non-woven fabric sheet and make by making by the part of cutting equipment (such as perforating press) physics excision non-woven fabric sheet.As another example, when nonwoven web have the roller of a plurality of projections in the above and another roller of being configured to match with this roller between when passing, on described nonwoven web, can form a plurality of perforation.So, because the physical pressure or the thermal pressure that are applied in perforation step, the nonwoven web of perforation may deform.Therefore, have such problem, promptly the density of nonwoven web and fiber increases (but bulkiness has diminished) around perforation.In addition, physical pressure that also exists in the perforation step to be applied or thermal pressure cause the destruction of fiber and increase the problem of surge layer hardness.
Summary of the invention
The objective of the invention is to solve aforesaid problem.The invention provides a kind of manufacture method of nonwoven web, this method is bored a hole to this nonwoven web under the condition that nonwoven web is not applied physical pressure or thermal pressure, thereby prevents that in the pliability that increases surge layer the fibre density of nonwoven web from increasing and reducing the destruction of fiber.The present invention also plans to provide a kind of absorbent commodity that contains this nonwoven web.
According to one embodiment of present invention, the perforation nonwoven web of no physics or thermal deformation can make according to the following steps: blended fiber; Unclamp fiber through mixing; The fiber of combing through unclamping; Bore a hole to the fiber through combing in no physics distortion or thermal deformation ground; Fixed fiber through perforation; And to carrying out finishing through fixed fiber.
Preferably, perforation step can comprise with predetermined pressure towards through the fiber of combing off and on injection air to form perforation and to stretch fiber around the perforation through combing.
Preferably, perforation step can be carried out simultaneously with the combing step.In this case, the fiber that unclamps can be provided with in the above and carry out combing on the conveyer of a plurality of projections to form the fibre web of perforation.And consolidation step can comprise the air pressure of will be scheduled to or is applied to the top side and/or the bottom side of fibre web by the pressure that variable contact forms.
In another aspect of the present invention, can comprise according to a described absorbent commodity of embodiment: the liquid permeability top flat; Liquid-tight egative film; Being arranged in being used between top flat and the egative film absorbs absorber through the liquid of top flat; And be arranged in being used between top flat and the absorber and will be delivered to the surge layer of absorber through the liquid of top flat.This surge layer can comprise the perforation nonwoven web of no physics or thermal deformation.
Described according to another embodiment of the invention absorbent commodity, it comprises: the liquid permeability top flat; Liquid-tight egative film; Being arranged in being used between top flat and the egative film absorbs absorber through the liquid of top flat; And be arranged in being used between top flat and the absorber and will be delivered to the surge layer of absorber through the liquid of top flat.This top flat can comprise the perforation nonwoven web of no physics or thermal deformation.
Absorbent commodity according to another embodiment of the invention, it comprises: the liquid permeability top flat; Liquid-tight egative film; Being arranged in being used between top flat and the egative film absorbs absorber through the liquid of top flat; And be arranged in being used between top flat and the absorber and will be delivered to the surge layer of absorber through the liquid of top flat.This surge layer comprises laminate, and described laminate comprises the perforation nonwoven web of no physics or thermal deformation and is laminated to the nonwoven web of the nothing perforation of its top side and/or bottom side.
In one embodiment, the gross area of these perforation is preferably 5% to 80% of the nonwoven web gross area.The diameter of perforation is preferably 2 millimeters to 30 millimeters.More preferably 5 millimeters to 10 millimeters of the diameters of perforation.The basic weight of the nonwoven web of perforation is preferably 20 and restrains every square metre to every square metre of 400 gram.
Manufacture method according to nonwoven web of the present invention, a plurality of perforation can be formed in the nonwoven web under the condition that physical deformation or thermal deformation do not take place, increase with the fibre density around preventing to bore a hole, and reduce owing to this density increases the hardness that produces.Therefore, when such nonwoven web was administered to user's skin, it is very soft that the user will feel.
In addition, because nonwoven web can be made with the voidage of low-density and increase, so this nonwoven web can be transported to absorber fast from the liquid that user's health is discharged.
And even under the situation of using small amount of fibers, nonwoven web also can be made into has and does not have the identical thickness of nonwoven web of boring a hole.That is to say that although use the low material of basic weight, nonwoven web also can be made with the thickness identical with the non-porous non-woven fibre web, thereby causes the reduction of production cost.
When the size of boring a hole was enough big, top flat can partly be recessed in these perforation, thereby reduced the contact area between top flat and the user's skin.Simultaneously, the distance between top flat and the absorber diminishes by means of perforation.So, absorb physical efficiency and absorb the moisture that remains in the top flat by capillarity.Therefore, the minimizing that reduces and remain in the moisture in the top flat of contact area between top flat and the user's skin, making does not have moisture in the top flat that can keep absorbent commodity.
If perforation is very high with the ratio of nonwoven web, the intensity of Chuan Kong nonwoven web will die down so, and deform easily in perforation step.For this reason, the nonwoven web of perforation can be provided with the nonwoven web of the nothing perforation of the top side of the nonwoven web that is laminated to this perforation or bottom side, thereby in the intensity that does not reduce nonwoven web, keeps perforation and nonwoven web at high proportion.
Description of drawings
Fig. 1 is the cutaway view that an example of traditional absorbent commodity is shown.
Fig. 2 is the perspective view of an example that shows the absorbent commodity of one embodiment of the present of invention.
Fig. 3 is the cutaway view along Fig. 2 center line III-III.
Fig. 4 shows the perspective view that is used for the nonwoven web of absorbent commodity according to an embodiment of the invention.
Fig. 5 schematically shows the perforation step after the combing step.
Fig. 6 is the zoomed-in view of " A " part among Fig. 5.
Fig. 7 schematically shows and form a plurality of perforation therein in the fiber that combing is unclamped.
Fig. 8 is along the resulting cutaway view of line VIII-VIII among Fig. 7.
The specific embodiment
Below will describe the manufacture method of not having the perforation of physics or thermal deformation nonwoven web according to an embodiment of the invention and the absorbent commodity that contains this nonwoven web in detail.
Fig. 2 is the perspective view of an example that the absorbent commodity of one embodiment of the present of invention is shown.Fig. 3 is the cutaway view along the line III-III among Fig. 2.Fig. 4 is the described perspective views that are used for the nonwoven web of absorbent commodity of one embodiment of the present of invention.
Referring to Fig. 2 and Fig. 3, the absorbent commodity 100 of Gou Chenging comprises according to one embodiment of present invention: allow from the liquid or the top flat 110 of excreta from wherein passing through of the discharge of user's health; To remain on absorber 130 wherein from the liquid of top flat 110; Be arranged on the following of absorber 130 to prevent to remain on the egative film 120 that liquid flows out in the absorber 130; And be arranged between top flat 110 and the absorber will be delivered to the surge layer 115 of absorber 130 apace through the liquid of top flat 110.As shown in Figure 2, when this absorbent commodity 100 was used as diaper, this absorbent commodity 100 also comprised the elastic component 150 and the waistband 160 that is used for engaging with baby's waist that is used for around baby's shank parcel.
Top flat 110 (can be known as " liner " in the art) directly contacts user's skin.Top flat 110 allow the liquid of discharging from user's health from wherein by and move to absorber 130 subsequently fast.Therefore, to have wettability, hydrophily and porous be favourable to top flat 110.Preferably, top flat 110 can be made by nonwoven web materials, and this material has low relatively density and big bulkiness.Nonwoven web materials can comprise a kind of such as polyester or poly fiber, it has the bicomponent fiber or the conjugate fiber of low-melting component and high low-melting component.For example, this fibrid can comprise nylon fiber, polyester fiber, cotton fiber, acrylic fiber etc. or their combination.Bicomponent fibers can comprise polyester core and polyethylene sheath.
Absorber 130 is arranged between top flat 110 and the egative film 140, to absorb liquid apace and liquid is remained on wherein.Generally speaking, this absorber 130 is necessary for compressible, submissive and does not have irritating to user's skin.For example, absorber 130 can be made by paper pulp fiber or by the paper pulp fiber that mixes superabsorbent particles.
Egative film 40 is set at below the absorber 130.Egative film 140 can be made by liquid-tight polyethylene film, thereby the liquid that can not that is contained in the absorber 130 is spilt and the underwear making dirty or stain the user.
Surge layer 115 is arranged between top flat 110 and the absorber 130.Surge layer 115 is used for fast Absorption and sees through the liquid of top flat 110 and the liquid that is absorbed is delivered to absorber 130, and the liquid infiltration that is absorbed to prevent is to user's skin.Surge layer 115 can be for by bonded carded web or air lay fibre web natural and/or that synthetic fiber make.Bonded carded web can be for example powder-stuck carded web, infrared bonded carded web or hot blast adhesion carded web (TABCW).
For the absorptivity that increases surge layer 115 and increase its pliability, the perforation nonwoven web 120 of no physics distortion according to an embodiment of the invention or thermal deformation can be used as surge layer 115.
In another embodiment, nonwoven web 120 of boring a hole under the situation of no physics distortion or thermal deformation according to an embodiment of the invention is also as top flat 110.
In another embodiment, according to an embodiment of the invention under the condition of distortion of no physics or thermal deformation, bore a hole nonwoven web 120 can laminate form as surge layer 115, does not wherein have the nonwoven web of boring a hole and is laminated on the nonwoven web 120.In this case, the nonwoven web that does not have a perforation can be arranged between the nonwoven web 120 of top flat 110 and perforation or between the nonwoven web 120 and absorber 130 of perforation.The nonwoven web of this nothing perforation includes but not limited to spunbond fibre web, bonded carded web, air lay fibre web, hot blast adhesion carded web etc.Preferably, this do not have perforation nonwoven web basic weight can for every square metre of 10 gram to every square metre of 30 gram.
Can use conventional art known in the art top flat 110, nonwoven web 120, absorber 130 and egative film 140 to be assembled into the absorbent commodity of multiple well-known form.Such as, can make to be thermally bonded or combination of ultrasound, hot-melt adhesive and their combination or any other suitable connection means are connected with each other above-mentioned parts.
Fig. 4 is the perspective view that shows nonwoven web of boring a hole according to an embodiment of the invention under the situation of no physics distortion or thermal deformation.As shown in Figure 4, form or limited a plurality of perforation on the layer 121 of nonwoven web 120.In one embodiment, nonwoven web 120 can be made by following steps: blended fiber; Unclamp fiber through mixing; The fiber of combing through unclamping; Bore a hole to the fiber through combing in no physics distortion or thermal deformation ground; Fixed fiber through perforation; To carrying out finishing through fixed fiber.
Such as mix, unclamp, step such as combing, fixed and finishing can carry out according to conventional art known in the art.
Preferably, the gross area of these perforation can be 5% to 80% of nonwoven web entire area.Preferably, the diameter of perforation can be 2 millimeters to 30 millimeters.More preferably, especially depend on soak time, the diameter of perforation can be 5 millimeters to 10 millimeters.Preferably, through the perforation nonwoven web basic weight can for 20 the gram every square metre to 400 the gram every square metre.
Fig. 5 schematically shows the perforation step after the combing step.Fig. 6 is the enlarged drawing of " A " part among Fig. 5.
Referring to Fig. 5 and Fig. 6, in one embodiment, after the combing step can by under predetermined pressure to blowing through the fiber of combing or jet and nonwoven web 120 is implemented perforation.Blow or jet can in the preset time section, carrying out off and on or constantly.In an embodiment that the fiber 121a through combing is bored a hole, airduct 170 is placed or is arranged to vertical with the layer plane, 121 place through the fiber 121a of combing.When air sprays to or blow to layer 121 through the fiber of combing from airduct, wherein be subjected to part that jet-stream wind impacts and be rushed out or blow out and form or constitute perforation or perforate 122a.So, before consolidation step, on the layer 121 of the fiber 121a of combing, forming or limiting a plurality of perforation or perforate 122a.Subsequently, if implement consolidation step, then on nonwoven web as shown in Figure 4, form a plurality of perforation 122.
In another embodiment, perforation step and combing step can be carried out simultaneously, thereby form the nonwoven web with perforation, shown in Fig. 7 and 8.When schematically showing the fiber that unclamps carried out combing, Fig. 7 forms perforation or the perforate that passes therethrough.Fig. 8 is the cutaway view along the line VIII-VIII among Fig. 7.As shown in Figure 7 and Figure 8, the nonwoven web of tape punching can so be made, and the fiber that promptly unclamps has in the above on the combing conveyer 180 of a plurality of projections or pin 181 and carries out combing.These projections or pin can have circle or polygon cross section, perhaps are taper.Can be clear that from Fig. 8 when the fiber that unclamps carried out combing on combing conveyer 180, a plurality of perforation perforation 122a as shown in Figure 6 formed by the layer 121b that a plurality of projections 181 penetrate through the fiber of combing.After such combing step was finished, consolidation step can so be carried out, and soon predetermined air pressure or variable contact pressure are applied to top side and/or the bottom side through the layer 121b of the fiber of combing.By such consolidation step, a plurality of perforation 122 consistent with the shape and size of projection 181 on the combing conveyer 180 can be formed on the nonwoven web 120, as shown in Figure 4.
That a plurality of the foregoing descriptions of piercing process only are used for illustrative purpose and do not plan to limit the invention to concrete technology described herein.Nonwoven web can adopt multiple other method that can not produce the distortion that physics or hot pressing causes.
According to above-mentioned perforation step, in the production stage of nonwoven web 120, there is not fiber loss, there is not the distortion that causes because of physical pressure or thermal pressure yet.
Following table 1 shows the one-tenth-value thickness 1/10 and the density value of the nonwoven web that does not have the perforation nonwoven web and bore a hole by jet formation according to one embodiment of the present of invention.
Table 1
Figure BPA00001330732700071
The nonwoven web of numbering C:TABCW material (every square metre of 80 gram do not have perforation)
The nonwoven web of numbering G:TABCW material (every square metre of 70 gram do not have perforation)
The nonwoven web of numbering F:TABCW material (every square metre of 70 gram are with jet formation perforation)
As shown in table 1, under identical condition, if the basic weight of nonwoven web reduce (such as, compare between numbering C and the numbering G material), then its density reduces and the thickness attenuation.Yet although the basic weight ratio of the material that uses is numbered the little of C, its thickness equals to number the thickness of C substantially, and its density is still little than the density of numbering C according to perforation nonwoven web of the present invention (numbering F).And, although according to perforation nonwoven web of the present invention (numbering F) although the material that uses has the identical basic weight with numbering G, its thickness still thickness than numbering G is big, and its density is still little than the density of numbering G.Therefore, although the basic weight of the material that uses is littler than the basic weight of numbering C and numbering G, thickness increases and density reduces, thereby has reduced raw-material consumption according to perforation nonwoven web of the present invention (numbering F).
Following Fig. 2 shows the experimental result with the liquid-absorbent speed of absorbent commodity that comprises the surge layer that is formed by nonwoven web and moisture evaporation amount (Grams Per Second/square metre), wherein have only the surge layer difference, any other parts except that surge layer are all identical.
Table 2
Figure BPA00001330732700072
Numbering C: the absorber that comprises TABCW material surge layer (every square metre of 80 gram do not have perforation)
Numbering F: comprise TABCW material surge layer (every square metre of 70 gram use jet formation perforation)
As shown in table 2, comprise that the soak time of the absorbent commodity (numbering F) of the nonwoven web of boring a hole is compared about 10%-17% that descended with the absorbent commodity of numbering C.And the moisture evaporation amount that comprises the absorbent commodity (numbering F) of the nonwoven web of boring a hole is compared with the absorbent commodity of numbering C and has been increased about 15%.Therefore, the liquid of discharging from user's health can be absorbed apace to wherein, also have sizable per second moisture evaporation amount according to absorbent commodity of the present invention, thus for a long time can be not wetly.
Although the present invention has been carried out specific description and description, it will be appreciated by one of skill in the art that under the situation that can not deviate from the scope of the invention it is made multiple variation and modification with reference to a plurality of exemplary embodiments.

Claims (24)

1. manufacture method of not having the perforation nonwoven web of physics or thermal deformation may further comprise the steps:
Blended fiber;
Unclamp fiber through mixing;
The fiber of combing through unclamping;
Bore a hole to the fiber through combing in no physics or thermal deformation ground;
Fixed fiber through perforation;
To carrying out finishing through fixed fiber.
2. method according to claim 1 is characterized in that, described perforation step comprise with predetermined pressure towards through the fiber of combing off and on injection air to form perforation and around this perforation, to stretch described fiber through combing.
3. method according to claim 1 is characterized in that, described perforation step and combing step are carried out so simultaneously, promptly is provided with in the above on the conveyer of a plurality of projections described fiber through unclamping is carried out combing to form the fibre web of perforation; And
This consolidation step comprise will be predetermined air pressure or the variable pressure top side and/or the bottom side that are applied to this fibre web.
4. a perforation nonwoven web that does not have physics or thermal deformation is characterized in that, this fibre web makes by each described method among the claim 1-3.
5. according to the described nonwoven web of claim 4, it is characterized in that the gross area of described many perforation is 5% to 80% of this nonwoven web gross area.
6. nonwoven web according to claim 4 is characterized in that, the diameter of described perforation is 2 millimeters to 30 millimeters.
7. nonwoven web according to claim 6 is characterized in that, the diameter of described perforation is 5 millimeters to 10 millimeters.
8. nonwoven web according to claim 4 is characterized in that, the basic weight of the nonwoven web of described perforation be 20 the gram every square metre to 400 the gram every square metre.
9. absorbent commodity comprises:
The liquid permeability top flat;
Liquid-tight egative film;
Being arranged in being used between this top flat and this egative film absorbs the absorber of the liquid that sees through described top flat;
Being arranged in being used between this top flat and this absorber will be delivered to the surge layer of described absorber through the liquid of described top flat, and described surge layer comprises the nonwoven web of described no physics distortion of claim 4 or the perforation of thermal deformation ground.
10. absorbent commodity according to claim 9 is characterized in that, the gross area of described many perforation is 5% to 80% of this nonwoven web gross area.
11. absorbent commodity according to claim 9 is characterized in that, the diameter of described perforation is 2 millimeters to 30 millimeters.
12. absorbent commodity according to claim 11 is characterized in that, the diameter of described perforation is 5 millimeters to 10 millimeters.
13. absorbent commodity according to claim 9 is characterized in that, the basic weight of the nonwoven web of described perforation be 20 the gram every square metre to 400 the gram every square metre.
14. an absorbent commodity comprises:
The liquid permeability top flat;
Liquid-tight egative film;
Being arranged in being used between this top flat and this egative film absorbs the absorber of the liquid that sees through described top flat;
Being arranged in being used between this top flat and this absorber will be delivered to the surge layer of this absorber through the liquid of described top flat, described surge layer comprises laminate, and described laminate comprises the perforation nonwoven web and the nothing perforation nonwoven web that is laminated on this perforation nonwoven web of no physics according to claim 4 or thermal deformation.
15. absorbent commodity according to claim 14 is characterized in that, the gross area of described many perforation is 5% to 80% of the nonwoven web gross area.
16. absorbent commodity according to claim 14 is characterized in that, the diameter of described perforation is 2 millimeters to 30 millimeters.
17. absorbent commodity according to claim 16 is characterized in that, the diameter of described perforation is 5 millimeters to 10 millimeters.
18. absorbent commodity according to claim 14 is characterized in that, the basic weight of the nonwoven web of described perforation be 20 the gram every square metre to 400 the gram every square metre.
19. absorbent commodity according to claim 14 is characterized in that, the basic weight of the nonwoven web of described nothing perforation is that every square metre of 10 gram are to every square metre of 30 gram.
20. an absorbent commodity comprises:
The liquid permeability top flat;
Liquid-tight egative film;
Being arranged in being used between this top flat and this egative film absorbs the absorber of the liquid that sees through described top flat;
Being arranged in being used between this top flat and this absorber will be delivered to the surge layer of absorber through the liquid of described top flat,
Wherein, described top flat comprises the perforation nonwoven web of described no physics of claim 4 or thermal deformation.
21. absorbent commodity according to claim 20 is characterized in that, the gross area of described many perforation is 5% to 80% of a nonwoven web entire area.
22. absorbent commodity according to claim 20 is characterized in that, the diameter of described perforation is 2 millimeters to 30 millimeters.
23. absorbent commodity according to claim 22 is characterized in that, the diameter of described perforation is 5 millimeters to 10 millimeters.
24. absorbent commodity according to claim 20 is characterized in that, the basic weight of described perforation nonwoven web be 20 the gram every square metre to 400 the gram every square metre.
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