CN1204866C - Liquid permeating composite sheet of disposable liquid absorption article and its producing method - Google Patents

Liquid permeating composite sheet of disposable liquid absorption article and its producing method Download PDF

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Publication number
CN1204866C
CN1204866C CNB001375547A CN00137554A CN1204866C CN 1204866 C CN1204866 C CN 1204866C CN B001375547 A CNB001375547 A CN B001375547A CN 00137554 A CN00137554 A CN 00137554A CN 1204866 C CN1204866 C CN 1204866C
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aforementioned
fabric
layer
film
compound
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CN1301530A (en
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合田裕树
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Unicharm Corp
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Unicharm Corp
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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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Laminated Bodies (AREA)

Abstract

The purpose of the invention is to improve the covering power of a liquid permeable composite sheet used for humor absorptive articles. The liquid permeable composite sheet 2 used for disposable humor absorptive articles is composed of a plurality of belt-like material portions 16 each having an upper plastic sheet layer 11 which is extended in one direction in parallel with the plastic sheet layers 11 of other portions 16 and a lower fiber assemblage layer 12 and a thin film material portion 17 which is bonded to the portions 16 and substantially covers the whole body of the fiber assemblage layer 12. The thin film material portion 17 has liquid permeable holes 19 formed between the belt-like material portions 16 and 16.

Description

The liquid permeability compound foil and the manufacture method thereof of disposable liquid absorption article
The present invention relates to the suitable liquid permeability compound foil that in disposable body fluid absorbent articles such as disposable diaper and physiological napkin, uses.
Fig. 7 is for opening the oblique view according to the plastic tab that small opening is arranged 110 of disclosed soft-touch in the 62-57551 communique the spy.This plastic tab, the proper object as the surface sheets of disposable diaper etc. is used forms a plurality of cylindric projections 120 on the surface of thin slice 110, at the top of projection 120, form small opening portion 125.This thin slice 110 is soft and demonstrate the same sense of touch of cloth.
Fig. 8 is for opening the oblique view of disclosed physiological napkin 200 in the flat 7-328061 communique the spy.The surface sheets 210 usefulness non-woven fabrics 211 of this sanitary towel 200 are made with the multi-ribbon shape plastic tab 212 that is bonded on above the non-woven fabrics 211, and banded plastic tab 212 extends towards the length direction of sanitary towel 200 in parallel to each other.In sanitary towel 200, owing to have plastic tab 212, so can hidden menses stains.
In the surface sheets of physiological napkin, use the aforementioned well-known plastic tab 110 that minute opening is arranged, with one of method of the menses stains of the hidden absorbency fuse that is positioned at skin layer below, for filling in thin slice with for example inorganic particulate such as calcium carbonate and barium sulfate.Also have,, preferably increase the charging quantity of this particle in order to improve hidden power.But because if only increase charging quantity, the intensity that will produce thin slice reduces and the contact width of the thickness of thin slice when making becomes big problem, so the thickness by the used thin slice of increase is eliminated this problem surely with regard to one.But if do like this, thin slice just becomes high inflexible, loses the same thoughts and feelings of cloth, even columnar projection, can become does not have flexibility yet.
Aforementioned spy opens flat 7-328061 communique, with regard to the surface sheets made from the such more smooth thin slice of non-woven fabrics 210, point out, if adopt banded plastic tab 212, can improve hidden power, but, with respect to having the such plastic tab of aforementioned cylindric projection 120, the using method of not shown this banded plastic tab fully.
Task of the present invention is with reference to original technology, to give the liquid permeability thin slice that for example uses and touch and high hidden power with softish skin in the surfacing of disposable body fluid absorbent article.
The present invention who is used for solving aforementioned task is made of with second invention relevant with the manufacture method of aforementioned compound foil first invention relevant with the liquid permeability compound foil that uses at disposable body fluid absorbent article.
In aforementioned first invention, the object of this invention is the liquid permeability compound foil that uses in disposable body fluid absorbent article, it in the above side the plastic tab layer is arranged, side has the fiber collection layer that engages with aforementioned plastic tab layer below.
In this compound foil, feature as aforementioned first invention, aforementioned plastic tab layer is by towards unidirectional multi-ribbon shape material part of extending in parallel to each other, with partly engage with aforementioned strip material, the film like material that covers in fact above the whole aforementioned fibers set layer is partly made, in aforementioned film like material part, between adjacent aforementioned strip material part, form towards aforementioned unidirectional a plurality of liquid permeable apertured of arranging discontinuously.
Aforementioned first invention has following ideal form of implementation.
(1) in aforementioned film like material part, along the edge of aforementioned perforate, repeat on the one hand to rise and fall, form the part that erects that top above aforementioned compound foil extends on the one hand.
(2) aforementioned strip material part between aforementioned film like material part and aforementioned fibers set layer, engages with aforementioned fibers set layer.
(3) aforementioned film like material part between aforementioned strip material part and aforementioned fibers set layer, engages with aforementioned fibers set layer.
(4) aforementioned plastic tab layer contains inorganic filler, and the amount of the aforementioned filler of the per unit area in the aforementioned strip material part is than the height in the aforementioned film like material part.
Aforementioned second the invention object be, the manufacture method of the liquid permeability compound foil that in disposable body fluid absorbent article, uses, this thin slice upper face side has the plastic tab layer, side has the fiber collection layer that engages with aforementioned plastic tab layer below.In the method, as the feature of aforementioned second invention, aforementioned compound foil is made through following operation at least.
A. supply with operation, it must form the fabric of aforementioned fibers set layer continuously towards unidirectional supply.
B. extrude operation, first thermoplastic that it will form the part of aforementioned plastic tab layer becomes many band to extrude.
C. extrude operation, second thermoplastic that it will form the part of aforementioned plastic tab layer becomes single thin film to extrude.
D. be bonded on by the aforementioned band that will extrude and in the aforementioned thin film any and obtain first compound fabric above the aforementioned fibers fabric, further by on aforementioned first compound fabric with in aforementioned band and the thin film any another be bonded on above the aforementioned fibers fabric and aforementioned band and thin film in the operation of second compound fabric of being supplied with continuously on any one at least in the two.
E. form operation, promptly with towards aforementioned thin film one side of aforementioned unidirectional continuous supply second compound fabric and the fabric of aforementioned fibers at least one side in aforementioned fibers shape fabric one side, to the aforementioned second compound fabric inject high pressure column current, between adjacent aforementioned band and band, edge in the partly destroyed most perforates that form by aforementioned thin film, partly form by the destruction of aforementioned thin film and to erect part, this erects the top top of partly stating thin film forward and erects, present zigzag, and towards aforementioned unidirectional extension.
In aforementioned second invention, following ideal form of implementation is arranged.
(1) sprays aforementioned high-voltage column-like water stream on aforementioned second compound fabric from aforementioned fabric side before, comprise by on aforementioned second compound fabric, spraying the column current, partly destroy aforementioned thin film and form the operation of most aforementioned perforates from aforementioned film side.
(2) aforementioned plastic tab layer is gathered engaging by this deposited finishing between the two of layer with aforementioned fibers.
Below with reference to accompanying drawing, be described in detail in liquid permeability thin slice and the manufacture method thereof used in the disposable body fluid absorbent article.
Fig. 1 is the oblique view of the partly cut-away of physiological napkin.
Fig. 2 is the partial enlarged drawing of Fig. 2.
Fig. 3 is the cutaway view along the III-III line of Fig. 2.
Fig. 4 is the cutaway view along the IV-IV line of Fig. 2.
Fig. 5 is the figure identical with Fig. 2 that an embodiment is shown.
Fig. 6 is the manufacturing procedure picture of compound foil.
Fig. 7 is the figure that an example of original technology is shown.
Fig. 8 is the oblique view of physiological napkin that another example of original technology is shown.
Fig. 1 is the oblique view as the partly cut-away of the physiological napkin 1 of an example of disposable body fluid absorbent article.Sanitary towel 1 is made up of liquid permeability surface sheets 2, opaque liquid the inside thin slice 3, the absorbency fuse 4 that is present between this two thin slice 2,3, the surface is overlapping in the part that the periphery from fuse 4 stretches out with the inside thin slice 2,3, and is bonded with each other by deposited or adhesion on online 6.Sanitary towel 1 has towards the width of directions X extension and the length of extending towards the Y direction.In such sanitary towel 1, adopted the compound foil relevant as surface sheets 2 with the present invention.
Fig. 2,3,4 is the partial enlarged drawing of sanitary towel and along the cutaway view of III-III line, IV-IV line.But the inside thin slice 3 illustrates with fuse 4 usefulness imaginary lines.Surface sheets 2 is by plastic tab layer 11 that is positioned at its upper face side and the compound foil made as the nonwoven layer 12 of the aggregation of fiber 13, and this two-layer 11,12 is bonded with each other by deposited or bonding.Plastic tab layer 11 has the multi-ribbon shape material part 16 that is parallel to each other and extends towards the Y direction, the top film like material part 17 of the nonwoven layer 12 of the downside of whole in fact covering strip material part 16, these two parts 16,17 usefulness thermoplastics form, and its lap is deposited mutually.Film like material part 17 has in parallel to each other many flats 18 by practical significance that extend towards the Y direction, most perforates 19 of between adjacent flat 18 and towards Y side, extending, from flat 18 mutually opposed edges part 21 towards directions X extend and the bridge formation part 20 of transversal perforate 19 and in the marginal portion 21 of flat 18, extend above the figure erect part 22.Erecting part 22 is to repeat irregular fluctuating on the one hand, and one side is towards the part of the roughly indentation of Y direction extension.
Nonwoven layer 12 is bonded on the flat 18 of film like material part 17 from the below of figure, exposes the part of nonwoven layer 12 at perforate 19 places.
In the thin slice 3 inside, adopt the non-woven fabrics made with thermoplastic thin slice and thermoplastic synthetic fiber and with the article of this thin slice and non-woven fabrics lamination.
Fuse 4 has adopted the mixture of shredded paper slurry and shredded paper slurry and high water absorbency polymer etc.
In Fig. 3,4, strip material part 16 is arranged in the flat 18 of film like material part 17, is preferably disposed in each of flat 18, and it has the thickness of 0.01～0.3mm and the width of 0.1～4mm.In the occasion of the discontented 0.01mm of thickness, improve the concealed poor effect of film like material part 17, same, when thickness surpassed 0.3mm, it is big that rigidity becomes, and the stimulation of skin is become excessive strong.Width S 1Roughly the same with the width of flat 18, or smaller than it.But, in order to improve the disguise of flat 18, its width S 1Be preferably made the width W 1 that is not less than flat 18
Figure C0013755400081
Further be not less than it This strip material part 16 can be by becoming band thermoplastic extrusion molding and be supplied to top the obtaining of film like material part 17, and still, its section configuration is removed outside the such rectangle of diagram, also can be made in circular and ellipse etc.
Strip material part 16 must have the menses that are absorbed in the fuse 4 can not see through surface sheets 2 descried functions as in the sanitary towel 1 of Fig. 1, and the disguised such function that improves surface sheets 2 is just arranged.In such strip material part 16, add inorganics filled dose of titanium oxide and barium sulfate etc., as required, also can add pigment etc.Their addition does not produce in the extrusion molding of strip material part 16 can be more in the scope of failure.In the big occasion of the addition of inorganic filler, width is narrow and strip material part that thickness is thick 16 is wideer than width and the film like material part 17 easier extrusion moldings of thin thickness, and, even the thickness of strip material part 16 has deviation, Effect on Performance to surface sheets 2 is also little, so adopt such strip material part 16, just improve the hidden ability of surface sheets 2 easily.When looking above surface sheets 2, the content of the inorganic filler of the per unit area of strip material part 16 is than the content height of film like material part 17, and preferably, the former content is at least the latter's 1.3 times of content.Strip material part 16 helps the raising of hot strength of the Y direction of film like material part 17.
Flat 18 in the film like material part 17 has the thickness of 0.001～0.05mm, between perforate 19 and 19, the width W 1 of 0.3～5mm is arranged.Most of perforates 19 are extended more longways towards the Y direction, and the width W 2 of 0.03～5mm are preferably arranged and be at least 1.5 times length of width W 2.
Bridge formation part 20 in the film like material part 17 from the flat 18 circular arc 20A that draws projectedly towards the top, and the same with flat 18, has smooth local 20B (referring to Fig. 2) between the perforate 19 and 19 of arranging towards the Y direction.The bridge formation part 20A that is drawn as circular arc has the situation of the cardinal extremity part 25A that extends from flat 18 of looking and the situation (referring to Fig. 2) of the cardinal extremity part 25B that extends from the top 27 that erects part 22 of looking.The thickness of ideal bridge formation part 20 is identical or thinner than it with the thickness of flat 18, and the width W 3 (referring to Fig. 3) that it extends towards the Y direction is 0.001～2mm in the narrowest part.
Part 22 great majority that erect in the film like material part 17 are 21 places, marginal portion at flat 18, part by thin film is extended and is formed towards the top of figure, has cardinal extremity part 26 that is connected with flat 18 and the free end portion 27 that extends from cardinal extremity part 26 towards the top.The upper limb 27A edgewise edge part 21 that erects part 22 repeats jagged fluctuating.The maximum of the height from flat 18 to upper limb 27A can reach about 5mm, but, good in order to make surface sheets 2 with contacting of skin, preferably its maximum is controlled to be about 1mm, and great majority erect part 22 and make above strip material part 16 outstanding.The a part of 22B that erects in the part 22 forms (referring to Fig. 2) on the edge of bridge formation part 20.
As shown in Figure 3, an example that repeats to rise and fall that erects the upper limb 27A of part 22 is to present triangle or be connected with the irregular of position 33 of the similar shape of triangle, and this triangle is formed by the hypotenuse 31 that roughly extends towards the upper right side, the hypotenuse 32 that roughly extends towards the upper left side and the cardinal extremity part 26 of extending between these hypotenuses 31,32.Erecting part 22B equally also repeats to rise and fall.Comprising erect part 22B this, to erect the thickness of part 22 identical or thinner than it with the thickness of flat 18, if with people's contact skin, with regard to strain, can make surface sheets 2 that the such smooth and softish thoughts and feelings of velvet is arranged.If it is many to erect the number of part 22, then the surface of surface sheets 2 looks like nappy appearance.Also have, erect the incident illumination of part 22 irregular references, can eliminate the lustrous surface of on plastic tab, often seeing towards surface sheets 2.
Usually, if in the thin film of film like material part 17, adding a lot of inorganic fillers, then make the manufacturing difficulty of thin film.Therefore, in this surface sheets 2, not to obtain high hidden power to the fuse of stains with film like material part 17, but obtain its hidden power with strip material part 16, and, these two parts were opened use in 16,17 minutes in order to make film like material part 17 improve the outward appearance of surface sheets 2 and contacting of skin.
Nonwoven layer 12 contains 70% thermoplastic synthetic fiber by weight at least, and other then contains maximum weight is 30% hydrophilic natural fibers such as hydrophilic chemical fibre, cotton fiber and paper pulp fiber such as rayon fiber.As an example of ideal nonwoven layer 12, be to be that 0.5～15d and weight are 5～50g/m with having fibrousness 2The object done of thermoplastic synthetic fiber, wherein, remove beyond spun bond nonwoven fabric and the hot sticky type non-woven fabrics such as some bonded nonwoven fabric, ventilation non-woven fabrics, the non-woven fabrics, nonwoven non-woven fabrics of melt-blown etc. are arranged.
If such surface sheets 2 is used in the physiological napkin 1, then menses are absorbed into the fuse 4 through nonwoven layer 12 from perforate 19.The fuse 4 that is polluted by menses and nonwoven layer 12 are erected covering such as part 22 by strong strip material part 16 of hidden power and irregular reference light, and its stains are unshowy.
Fig. 5 for the identical figure of Fig. 4 of the example that form of implementation of the present invention is shown.In this surface sheets 2, strip material part 16 is between the flat 18 of nonwoven layer 12 and film like material part 17.Being bonded on the nonwoven layer 12 below by deposited or bonding of strip material part 16 then is bonded on the flat 18 by deposited or bonding above.Below the film like material part 17, be bonded on strip material part 16 and the nonwoven layer 12 by deposited or bonding.In the physiological napkin 1 that adopts this surface sheets 2, owing to do not expose with the different strip material part 16 of Fig. 1, so on surface sheets 2, retained menstruation is erecting between part 22 and the strip material part 16, on the edge of strip material part 16, do not stimulate sanitary towel the worry of usefulness person's skin simultaneously.
Fig. 6 illustrates the figure of continuous manufacturing as the operation of the compound foil 108 of surface sheets 2 uses of Fig. 2.From the left side of Fig. 2, supply with second fabric 102 of the fiber assembly of making the nonwoven layer 12 that must become Fig. 2 continuously.On second fabric 102 on the 102A, single first fabric 101 with first thermoplastic of sending from first extruder 121 film like part 17 that make, that must become surface sheets 2, with thermoplastic state by stacked, and be sent between a pair of compressing roller 173, two fabrics 101,102 are deposited over together, become first compound fabric 104.
In first compound fabric 104, on first fabric 101, make with second thermoplastic of sending from second extruder 122, as the 3rd fabric 103 of pressing the spaced-apart multi-ribbon 116 of desired size in parallel to each other, be supplied to thermoplastic state, between a pair of compressing roller 174, first fabric 101 is deposited over the 3rd fabric 103, forms second compound fabric 106.The 3rd fabric 103 with the 116 strip material parts 16 that become surface sheets 2.
Second compound fabric 106 advances towards first treatment region 123, and high-voltage column-like water stream sprays from a plurality of nozzle rows 123A 101A above first fabric 101 that arranges in the width spacing in accordance with regulations of second compound fabric 106, obtains the 3rd compound fabric 107.Destroyed selectively by these column current with first fabric 101 between 116 and 116, and on first fabric 101, direct of travel towards the 3rd compound fabric 107 forms the perforate row of arranging discontinuously, and such perforate is listed in the width of the 3rd compound fabric 107 and arranges in parallel to each other.In first treatment region 123,, except that the nozzle rows 123A of necessity, can also be as shown in the figure also spray the column current from the row of second, third nozzle rows 123B, 123C in order to form many perforate row. Such nozzle rows 123A, 123B, 123C preferably make along the position of the nozzle of the width of the 3rd compound fabric 107 consistent with each other substantially, and the track of water flow jet is overlapped.In the bottom of first treatment region 123, the aspirating mechanism 124 that attracts the water eject is set.
The 3rd compound fabric 107 advances towards second treatment region 127.In second treatment region 127, nozzle rows 127A, the 127B, 127C and the aspirating mechanism 128 that become row towards the width of the 3rd compound fabric 107 are set.Herein, facing to the following 102B of second fabric 102 that forms the 3rd compound fabric 107, inject high pressure column current, after, carry out dried, become compound foil 108.In compound foil 108, the part of destructive first fabric 101 in first treatment region 123, imitate second treatment region 127 the column current direction and be out of shape the direction extension of 101B 101A above pointing to below first fabric 101.The track of the jet water course that is produced by nozzle rows 127A, the 127B of second treatment region 127,127C not necessarily will be with consistent by nozzle rows 123A, the 123B of first treatment region 123, track that 123C produces, but, if they are roughly consistent with each other, then first fabric 101 is destroyed in very wide scope, form long perforate, destroy the top of part majority 101A above first fabric 101 and extend.If according to the manufacture method relevant with the present invention, destroy the desired position of the width of first fabric 101 selectively, then form many perforate row that extend in parallel to each other towards machine direction easily.
In compound foil 108, first, second fabric 101,102 that is bonded with each other becomes the plastic layer 17 of surface sheets 2, and the ruined part that the perforate that forms on first fabric 101 becomes perforate 19, the first fabrics 101 becomes and erects part 22.In the perforate row of arranging towards the direction of the supply of first fabric 101, destroying the part that forms with the high-voltage column-like water stream between perforate part and the aperture portion branch becomes bridge formation part 20.
In Fig. 6, preferably, the diameter of the nozzle of nozzle rows 123A～123C, 127A～127C is 0.05～0.15mm, and the spacing of the adjacent nozzle in each nozzle rows is 0.1～0.5mm, and the hydraulic pressure of column current is 30～300kg/cm 2, swabbing pressure is 200～1000mmH 2O.In first, second treatment region 123,127, the fabric that needs are handled is placed on the support such as filter screen and moves towards the direction of regulation.
First fabric 101, second fabric 102 and the 3rd fabric 103, when supplying with by room temperature, between a pair of roller with these fabrics heating, can be by deposited or by engaging with the heat fusing binding agent is bonding.
In first fabric 101, second fabric 102 and the 3rd fabric 103, if necessary, can carry out other surface treatment in the appropriate location of illustrated operation.First fabric 101 has along the thin film of direction of the supply uniaxial extension, and also useful column current make the formation of perforate be easy to situation.In first fabric 101, adopting thickness is the thing of 0.001～0.05mm, and in the 3rd fabric 103, employing thickness is that 0.01～0.3mm, width are the thing of 0.1～4mm.In second fabric 102, employing weight is 5～50g/m 2Thing.In the operation of Fig. 6, save first treatment region 123, only inject high pressure column current in second treatment region 127 thus, can not made second compound fabric 107, but make compound fabric 108 from first compound fabric 106.But, in such manufacture method, owing to the column current are difficult to act directly on first fabric 101, so on first fabric 101, be easy to generate the narrow perforate of width and many bridge formation parts.Compound fabric 108 carried out suitable dried before it batches.Also have, in the operation of Fig. 6, can take out second compound fabric 107, and this compound fabric 107 is used as surface sheets 2 from illustrated operation.In the surface sheets 2 of this situation, on the marginal portion 21 of perforate 19, form hardly and erect part 22.
Also can change the order of the operation among Fig. 6, send many strip tapes 116, make first compound fabric by it being bonded on the fiber assembly as second fabric 102 as first fabric 101 from first extruder 121.Send the 3rd fabric from second extruder 122, obtain second compound fabric 106 by it being bonded on the first, the second fabric 101,102 that forms first compound fabric 104 as thin film.This second compound fabric 106 is processed in first, second treatment region 123,127, becomes the compound foil 108 of the cross-sectional configuration with Fig. 5.This compound foil 108 also can be used as surface sheets 2 and uses.
The compound foil relevant with the present invention is owing to partly form with multi-ribbon shape material part and joint film like material thereon, if so this compound foil is used as the surface sheets of disposable diaper and physiological napkin, then in the eclipsed position of two parts, the positively stains of hidden fuse.The strip material part also plays a part the raising in the hot strength of the film like material part of its bearing of trend.
According to the manufacture method of the compound foil relevant with the present invention, can destroy the desired position that forms the needed width of fabric direction of film like material part selectively and easily obtain liquid permeability perforate and with skin soft contact erect part.

Claims (7)

1. the liquid permeability compound foil that in disposable body fluid absorbent article, uses, side has the plastic tab layer in the above, side has the fibrous layer that engages with aforementioned plastic tab layer below, it is characterized in that aforementioned plastic tab layer comprises the film like material that partly engages, covers in fact towards unidirectional multi-ribbon shape material part of extending in parallel to each other with aforementioned strip material above the whole aforementioned fibers set layer; In aforementioned film like material part, between adjacent aforementioned strip material part, formation is towards aforementioned unidirectional a plurality of liquid permeable apertured of arranging discontinuously, and, edge along aforementioned perforate, repeat on one side to rise and fall, form erect part that top towards aforementioned compound foil above extend on one side.
2. compound foil as claimed in claim 1 is characterized by, and between aforementioned film like material part and aforementioned fibers set, aforementioned strip material part engages with aforementioned fibers set layer.
3. compound foil as claimed in claim 1 is characterized by, and between aforementioned strip material part and aforementioned fibers set layer, aforementioned film like material part engages with aforementioned fibers set layer.
4. as each described compound foil of claim 1 to 3, it is characterized by, aforementioned plastic tab layer contains inorganic filler, and the content of the aforementioned filler of the per unit area in the aforementioned strip material part is than the height in the aforementioned film like material part.
5. the manufacture method of the liquid permeability compound foil that in disposable body fluid absorbent article, uses, this thin slice side in the above has the plastic tab layer, side has the fiber collection layer that engages with aforementioned plastic tab layer below, being characterized as of this manufacture method, aforementioned compound foil are made through following operation at least:
A. supply with operation, it is used to form the fabric of aforementioned fibers set layer continuously towards unidirectional supply;
B. extrude operation, it will be used to form first thermoplastic of the part of aforementioned plastic tab layer and extrude with becoming unnecessary band;
C. extrude operation, it will be used to form second thermoplastic of aforementioned plastic tab layer and extrude with becoming monolithic thin film;
D. be bonded on above the aforementioned fibers fabric by the aforementioned band that will extrude and in the aforementioned thin film either party, obtain first compound fabric; Further, by on aforementioned first compound fabric, the opposing party in aforementioned band and the thin film is bonded on a side above the aforementioned fibers fabric and in aforementioned band and the thin film in the two at least on any, and obtain operation to second compound fabric of above-mentioned unidirectional continuous supply;
E. from towards the aforementioned film side of second compound fabric of aforementioned unidirectional continuous supply and the fabric side of aforementioned fibers at least the aforementioned fibers shape fabric side, to the aforementioned second compound fabric inject high pressure column current, be between adjacent aforementioned band and the band by aforementioned film portion the edge of the destroyed most perforates that form, partly form from the destruction of aforementioned thin film and to erect part, this erects the top top of partly stating thin film forward and erects, indentation, and towards aforementioned unidirectional extension.
6. manufacture method as claimed in claim 5, it is characterized by, also have: spray aforementioned high-voltage column-like water stream from aforementioned second compound fabric of aforementioned fabric side direction before, by from aforementioned film side to the aforementioned second compound fabric inject high pressure column current, partly destroy aforementioned thin film and form the operation of a plurality of aforementioned perforates.
7. as claim 5 or 6 described manufacture methods, it is characterized by, aforementioned plastic tab layer engages by this deposited realization between the two with aforementioned fibers set layer.
CNB001375547A 1999-12-28 2000-12-28 Liquid permeating composite sheet of disposable liquid absorption article and its producing method Expired - Fee Related CN1204866C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP37296099A JP3877923B2 (en) 1999-12-28 1999-12-28 Liquid-permeable composite sheet for disposable body fluid absorbent articles
JP372960/1999 1999-12-28

Publications (2)

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CN1301530A CN1301530A (en) 2001-07-04
CN1204866C true CN1204866C (en) 2005-06-08

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JP (1) JP3877923B2 (en)
KR (1) KR100707154B1 (en)
CN (1) CN1204866C (en)
ID (1) ID28738A (en)
MY (1) MY120867A (en)
SG (1) SG86454A1 (en)
TW (1) TW523403B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4146192B2 (en) * 2001-09-11 2008-09-03 ユニ・チャーム株式会社 Absorbent articles
WO2005013874A1 (en) * 2003-08-07 2005-02-17 The Procter And Gamble Company Apertured film
JP2005296480A (en) * 2004-04-15 2005-10-27 Uni Charm Corp Sanitary napkin
JP4560415B2 (en) 2005-01-20 2010-10-13 ユニ・チャーム株式会社 Absorbent articles

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629643A (en) * 1985-05-31 1986-12-16 The Procter & Gamble Company Microapertured polymeric web exhibiting soft and silky tactile impression
CA2136675C (en) * 1993-12-17 2005-02-15 Kimberly-Clark Worldwide, Inc. Liquid permeable, quilted film laminates
JP3091361B2 (en) * 1994-06-07 2000-09-25 ユニ・チャーム株式会社 Disposable body fluid absorbent articles
JP3058572B2 (en) * 1994-12-13 2000-07-04 ユニ・チャーム株式会社 Body fluid absorbent articles
JP3628883B2 (en) * 1997-11-26 2005-03-16 ユニ・チャーム株式会社 Flexible sheet used for disposable wearing article and method for producing the same

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TW523403B (en) 2003-03-11
ID28738A (en) 2001-06-28
MY120867A (en) 2005-11-30
JP3877923B2 (en) 2007-02-07
KR20010062579A (en) 2001-07-07
JP2001187087A (en) 2001-07-10
CN1301530A (en) 2001-07-04
KR100707154B1 (en) 2007-04-16
SG86454A1 (en) 2002-02-19

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