CN105120819A - Absorbent article - Google Patents
Absorbent article Download PDFInfo
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- CN105120819A CN105120819A CN201480018125.5A CN201480018125A CN105120819A CN 105120819 A CN105120819 A CN 105120819A CN 201480018125 A CN201480018125 A CN 201480018125A CN 105120819 A CN105120819 A CN 105120819A
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- Prior art keywords
- amplitude peak
- skin
- absorbent commodity
- disposable diaper
- nirs
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- 230000002745 absorbent Effects 0.000 title claims abstract description 50
- 239000002250 absorbent Substances 0.000 title claims abstract description 50
- 238000001228 spectrum Methods 0.000 claims abstract description 30
- 230000009466 transformation Effects 0.000 claims description 28
- 238000005259 measurement Methods 0.000 abstract description 11
- 230000000704 physical effect Effects 0.000 abstract description 8
- 238000004497 NIR spectroscopy Methods 0.000 abstract 2
- 239000000835 fiber Substances 0.000 description 30
- 239000004745 nonwoven fabric Substances 0.000 description 21
- 238000004458 analytical method Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 17
- 238000011156 evaluation Methods 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 12
- 230000003925 brain function Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 239000006096 absorbing agent Substances 0.000 description 8
- 210000002414 leg Anatomy 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 238000004611 spectroscopical analysis Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 210000001217 buttock Anatomy 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000012946 outsourcing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008451 emotion Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
-
- 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
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
-
- 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
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
- A61F2013/8488—Accessories, not otherwise provided for, for absorbent pads including testing apparatus
- A61F2013/8491—Accessories, not otherwise provided for, for absorbent pads including testing apparatus including test methods
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Provided is an absorbent article which is objectively improved with respect to comfortability when worn on the basis of the correspondence between a measurement value based on near-infrared spectroscopy (NIRS) and physical properties of the absorbent article. In this disposable diaper (10), the sum of a first prescribed number of amplitude peaks of a frequency spectrum obtained by executing a Fourier transform on waveform data of the friction resistance for the surface of a top sheet (50) on a time axis is 0.025gf-s or less, and the ratio of the sum of a second prescribed number of amplitude peaks of the frequency spectrum to the sum of the first prescribed number of amplitude peaks is 20% or more, the friction resistance in the waveform data being friction resistance generated in the opposite direction to the lengthwise direction (L) of the product when the surface of the top sheet (50) is stroked in the lengthwise direction (L) of the product according to a prescribed measurement condition.
Description
Technical field
The present invention relates to absorbent commodity, particularly relating to by setting up corresponding relation to based on the measured value of near infrared ray optical spectroscopy (NIRS) and the physical property of absorbent commodity, making the absorbent commodity that comfortableness when wearing improves objectively.
Back technology
For the absorbent commodities such as disposable diaper, the comfortableness of wearer is by skin sense of touch (sense of touch) considerable influence.In the past, based on experience and the sensation of developer, use the non-woven fabrics that skin sense of touch is good.
In addition, the method having the physical property carrying out the components such as regulation non-woven fabrics based on objective index is also attempted.Such as there are known to the method (such as patent documentation 1) based on carrying out the physical property of the components such as regulation non-woven fabrics according to the flexural rigidity etc. of KES (reference: " the Standard Quasiization と that Wind closes い Evaluation value resolves " the 2nd edition (fibre machinery association of Japan of civic organization sense of touch is measured and the distribution on July 10th, 55 of Standardization Research committee Showa)).
Look-ahead technique document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2008-43674 publication (claims 1 etc.)
Summary of the invention
In addition, recently, as the measuring method of universal new brain function, there are known near infrared ray optical spectroscopy (NIRS).Owing to measurement can be made compared with the measurement of E.E.G to become simple according to the measurement of NIRS, so also high for being difficult to affinity the long-time infant measured etc.
When measuring the state of brain of the infant having worn absorbent commodity (disposable diaper) according to NIRS, known sometimes have the dermotactile non-woven fabrics (absorbent commodity) being in the past considered to comfortableness high and may not demonstrate the high value of good value, i.e. comfortableness.
Namely known, bending rigid value in the past or the setting according to the physical property of the experience of developer and the absorbent commodity (non-woven fabrics) of sensation sometimes may not contribute to improving comfortableness during wearing of absorbent commodity.Particularly infant, People, is in most cases also difficult to the emotion of self to pass to other people exactly, requires the method for the comfortableness of establishing when can evaluate the wearing of absorbent commodity objectively consumingly.
Therefore, the present invention proposes in view of such situation, its object is to, a kind of absorbent commodity by improving comfortableness when wearing more objectively to setting up corresponding relation based on the measured value of near infrared ray optical spectroscopy (NIRS) and the physical property of absorbent commodity is provided.
1st feature of the present invention possesses the absorbent commodity (disposable diaper 10) that the skin abutted with the skin of wearer abuts dough sheet (top sheet 50), wherein, based on the measuring condition of regulation, the surface that above-mentioned skin abuts dough sheet is stroked along the 1st direction (article length direction L), thus by the amplitude peak of the 1st regulation number to the frequency spectrum obtained carrying out Fourier transformation with the Wave data on the time shaft of frictional resistance that produces on diametical 2nd direction, above-mentioned 1st direction and be below 0.025gfs, and said frequencies spectrum the 2nd regulation number amplitude peak and relative to above-mentioned 1st regulation number amplitude peak and ratio be more than 20%.
2nd feature of the present invention possesses the absorbent commodity that the skin abutted with the skin of wearer abuts dough sheet, wherein, based on the measuring condition of regulation, the surface that above-mentioned skin abuts dough sheet is stroked along above-mentioned 1st direction, thus by the amplitude peak to the frequency spectrum obtained carrying out Fourier transformation with the Wave data on the time shaft of frictional resistance that produces on diametical 2nd direction, above-mentioned 1st direction and be below 0.07gfs, and the gradient not enough-0.90 of the linear near linear of said frequencies spectrum.
Accompanying drawing explanation
Fig. 1 is the expansion plane graph of the disposable diaper of embodiments of the present invention.
Fig. 2 is the sectional view of the disposable diaper 10 along the F-F line shown in Fig. 1.
Fig. 3 is the summary construction diagram of the measuring device 100 and evaluating apparatus 200 used in the Comfort Evaluation method of the absorbent commodity of embodiments of the present invention.
Fig. 4 is the Comfort Evaluation method flow diagram of the absorbent commodity of embodiments of the present invention.
Fig. 5 represents to use the measuring device 100 of embodiments of the present invention and the figure of the example of Wave data that obtains.
Fig. 6 is the figure of the example of data after the Fourier transformation representing embodiments of the present invention.
Fig. 7 is the diagram that the amplitude peak of the frequency of the multiple of the 0.333Hz represented based on embodiments of the present invention accounts for the ratio (3_sum/sum) of these 5 peak values and the evaluation result according to the comfortableness of the absorbent commodity of the corresponding relation of the measured value of the brain function of NIRS.
Fig. 8 is the figure representing the embodiment of embodiments of the present invention and the NIRS measured value of comparative example.
Fig. 9 is the diagram representing that the x-axis (frequency axis) of the data after with the Fourier transformation of embodiments of the present invention and y-axis (amplitude axe) are linear near linear when logarithm.
Figure 10 is the diagram represented based on the gradient of the linear near linear of embodiments of the present invention and the evaluation result according to the comfortableness of the absorbent commodity of the corresponding relation of the measured value of the brain function of NIRS.
Figure 11 is the diagram represented based on the gradient of the linear near linear of embodiments of the present invention and the evaluation result according to the comfortableness of the absorbent commodity of the corresponding relation of the measured value of the brain function of NIRS.
Detailed description of the invention
Then, the embodiment of the Comfort Evaluation method of absorbent commodity of the present invention is described with reference to accompanying drawing.In addition, in the record of following accompanying drawing, to same or similar part, mark same or similar Reference numeral.Wherein, it should be noted, accompanying drawing is schematic, and the ratio of each size etc. are different from reality.
Thus, concrete size etc. should be judged with reference to the following description.In addition, the relation of the mutual size part different with ratio may also be comprised with each other at accompanying drawing.
(1) the overall schematic configuration of disposable diaper
Fig. 1 is the expansion plane graph of the disposable diaper 10 of present embodiment.Fig. 2 is the sectional view of the disposable diaper 10 along the F-F line shown in Fig. 1.In addition, the expansion plane graph shown in Fig. 1 is the figure of the state of the state of fold leg pars contractilis 75 and leg side rivel portion 80 being elongated to do not formed the top sheet 50, flank sheet 70 etc. that form disposable diaper 10.
As depicted in figs. 1 and 2, disposable diaper 10 has front waist area 20, territory, crotch zone 25 and rear waist area 30, and front waist area 20 is the parts contacted with the frontal cowl of wearer (abdominal section).In addition, rear waist area 30 is the parts contacted with the rear waist portion (back portion) of wearer.Territory, crotch zone 25 is between front waist area 20 and rear waist area 30.
In addition, in the present embodiment, the past waist area 20 is called article length direction L towards the direction of rear waist area 30, the direction with the L-orthogonal of article length direction is called goods width W.
Disposable diaper 10 possess stride across territory, crotch zone 25 and from territory, crotch zone 25 towards front waist area 20 and rear waist area 30 in the middle of at least either party extend absorber 40.Absorber 40 is made up of absorbent core 40a and core outsourcing portion 40b.
Absorbent core 40a can use the known component such as comminution pulp, high absorption polymer, compatible materials to form.Absorbent core 40a is wrapped up by the core outsourcing portion 40b of lamellar.
In the face side (skin bearing surface side) of absorber 40, possesses the top sheet 50 (skin abutting dough sheet) of liquid permeability.In addition, in the rear side (non-skin bearing surface side) of absorber 40, liquid-impermeable backsheet 60a is possessed.Backsheet 60a is configured between absorber 40 and outer load 60, plays a role as leakage prevention sheet.At the side edge part of the goods width W of absorber 40, possesses flank sheet 70 respectively.
Flank sheet 70 is made up of multiple non-woven fabrics be piled up of more than 1 or 2.In addition, a pair flank sheet 70 possesses restraint zone 90 respectively.
The face side (top sheet 50 side) of absorber 40 possesses a pair leg pars contractilis 75 that can stretch on the L of article length direction.In addition, in the inner side (near the central authorities on goods width W) of a pair leg pars contractilis 75, a pair leg side rivel portion 80 extended along article length direction L is possessed.
By making restraint zone 90 extend along goods width W in rear waist area 30, and be fixed in the non-skin bearing surface of front waist area 20, disposable diaper 10 is remained on the health of wearer.
For disposable diaper 10, stroked the surface of top sheet 50 (skin abutting dough sheet) along article length direction L (the 1st direction) by the measuring condition based on regulation, relative to the 1st regulation number of the frequency spectrum obtained carrying out Fourier transformation with the Wave data on the time shaft of frictional resistance that produces on diametical 2nd direction, the 1st direction amplitude peak and be below 0.025gfs, and relative to the 1st regulation number amplitude peak and, the amplitude peak of the 2nd regulation number of frequency spectrum and ratio be more than 20%.
In addition, for disposable diaper 10, stroked the surface of top sheet 50 (skin abutting dough sheet) along article length direction L (the 1st direction) by the measuring condition based on regulation, relative to the frequency spectrum obtained carrying out Fourier transformation with the Wave data on the time shaft of frictional resistance that produces on diametical 2nd direction, the 1st direction amplitude peak and be below 0.07gfs, and the gradient of the linear near linear of frequency spectrum not enough-0.90.
In addition, the amplitude peak of the measuring condition of pertinent regulations, the 1st regulation number and, the amplitude peak of the 2nd regulation number and, the amplitude peak of frequency spectrum and and the gradient of linear near linear, aftermentioned.
(2) overview of Comfort Evaluation method
Then, to become the amplitude peak that determines above-mentioned disposable diaper 10 and and the Comfort Evaluation method of absorbent commodity of basis of gradient of linear near linear be described.
Fig. 3 is the summary construction diagram of the measuring device 100 and evaluating apparatus 200 used in the Comfort Evaluation method of the absorbent commodity (such as, disposable diaper) of present embodiment.
Measuring device 100 measures the frictional resistance and the coefficient of friction that become the material (non-woven fabrics etc.) of the object of measurement.In the present embodiment, as measuring device 100, use the 3D friction of motion measuring device of ト リ ニ テ ィ ー ラ ボ.Specifically, ト リ ニ テ ィ ー ラ ボ TL701x is used.In addition, about the concrete specification of measuring device 100, aftermentioned further.
Evaluating apparatus 200 is connected with measuring device 100.Evaluating apparatus 200 obtains the data measured by measuring device 100, performs the storage of these data, processing (Fourier transformation etc.) and resolves.As evaluating apparatus 200, common personal computer (such as, Windows (registered trade mark)) can be used.
Fig. 4 is the Comfort Evaluation method flow diagram of the absorbent commodity of present embodiment.As shown in Figure 4, with the frictional resistance (unit: gf) (S10) of the measuring device 100 measuring object material specifically sheet (surface patch) of the skin bearing surface of disposable diaper.
Specifically, based on the measuring condition of regulation described later, throughput direction (the 1st direction) during the manufacture of specifically absorbent commodity along the Y direction strokes the surface of the skin bearing surface (surface patch) of absorbent commodity, thus obtain with the Wave data (S20) on the time shaft of the Y-direction upper frictional resistance produced in direction (the 2nd direction) of (contrary 180 degree) antithesis.
Then, with evaluating apparatus 200, Fourier transformation (S30) is carried out to the Wave data achieved.By carrying out Fourier transformation to the Wave data achieved, obtaining from time shaft with frequency axis is data, the specifically frequency spectrum of benchmark.
In addition, with evaluating apparatus 200, the Wave data after carrying out Fourier transformation is resolved (S40).Specifically, the data (specifically the data of amplitude) of processing frequency spectrum, generate the diagram etc. of Comfort Evaluation.
Evaluating apparatus 200 keeps the data that have been resolved and the corresponding relation according to the measured value of the brain function of near infrared ray optical spectroscopy (NIRS), based on this corresponding relation, evaluates the comfortableness (S50) of absorbent commodity.Specifically, the value of the data of evaluating apparatus 200 frequency spectrum that kept processed and the corresponding relation as the variable quantity (Oxy-Hbconcentration (z-score)) of the oxidation hemoglobin concentration of the measured value of NIRS.
(3) measuring method
Then, the details about the measuring method employing measuring device 100 are described.Table 1 represents the concrete measurement environment and the measuring condition that employ measuring device 100.
[table 1]
Based on the measuring condition (measuring condition of regulation) shown in table 1, measure the frictional resistance (unit: gf) of the skin bearing surface (surface patch) of absorbent commodity, obtain Wave data.Fig. 5 (a) and (b) represent the example with the Wave data acquired by measuring device 100.Fig. 5 (a) represents the example of the Wave data of embodiment, and Fig. 5 (b) represents the example of the Wave data of comparative example.As shown in Fig. 5 (a) He (b), x-axis is the time, and y-axis is the frictional resistance in (MD direction) along the Y direction.
Then, with evaluating apparatus 200, Fourier transformation is carried out to the Wave data obtained with measuring device 100 in this wise.Fig. 6 (a) and (b) represent the example of the data after Fourier transformation.Fig. 6 (a) is corresponding with Fig. 5 (a), represents the example of the data after the Fourier transformation of embodiment.Fig. 6 (b) is corresponding with Fig. 5 (b), represents the example of the data after the Fourier transformation of comparative example.As shown in Fig. 6 (a) He (b), by carrying out Fourier transformation, being transformed to frequency axis is the data of benchmark, and x-axis becomes frequency, and y-axis becomes the amplitude of frequency spectrum.
(4) analytic method
Then, the analytic method of the Wave data after above-mentioned Fourier transformation is described.In the present embodiment, two kinds of analytic methods are used.Specifically, use the amplitude peak based on regulation number account for multiple amplitude peak of frequency spectrum and ratio parsing (analytic method 1) and based on the parsing (analytic method 2) being the gradient of linear near linear when logarithm with the x-axis of carrying out the data after Fourier transformation and y-axis.
(4.1) analytic method 1
In analytic method 1, by the data (with reference to Fig. 6 (a) and (b)) after Fourier transformation, peak value arrogant from multiple amplitude peak, extract 5 peak values successively.In 5 peak values extracted, frequency is 0.333Hz (specifically 0.333Hz ± 0.005 (5 × 10
-3) Hz) and the peak value of frequency of multiple.
Then, the peak value calculating the frequency of the multiple of extracted 0.333Hz accounts for the ratio of these 5 peak values.Specifically, this ratio is calculated based on (formula 1).
(amplitude peak of the multiple of 0.333Hz and the summation of/5 amplitude peak) × 100 (%) ... (formula 1)
Like this, calculate the amplitude peak of the 1st regulation number of the frequency spectrum obtained by carrying out Fourier transformation and (arrogant peak value rise 5 amplitude peak successively and) and the 2nd regulation number fewer than the 1st regulation number amplitude peak and the amplitude peak of the multiple of 0.333Hz (and) specify the ratio of the amplitude peak of number relative to the 1st.In addition, the amplitude peak of the 2nd regulation number is selected for benchmark with the frequency of the multiple of 0.333Hz.In addition, frequency may not be defined in the multiple of 0.333Hz.
Then, based on the 1st regulation number amplitude peak and and the 2nd regulation number amplitude peak and, specifically the peak value of the frequency of the multiple of 0.333Hz accounts for the ratio of these 5 peak values and the corresponding relation according to the measured value of the brain function of NIRS, evaluates the comfortableness of absorbent commodity.
Table 2 represents the example of the analysis result based on this analytic method.
[table 2]
[table 3]
| Embodiment 1 | Embodiment 2 | |
| Kind | Non-woven fabrics | Non-woven fabrics |
| Kind (in detail) | Hot blast | Composite fibre is spunbond |
| Weight per unit area | 22g/m 2 | 50g/m 2 |
| Kinds of fibers | PE/PET | PP/ polyurethane |
| Fibre diameter | 1.3/2.2dtex | 1.5～4.0dtex |
The sum of table 2 represent the summation of 5 amplitude peak, 3_sum represent the amplitude peak of the multiple of 0.333Hz and.In addition, 3_sum/sum represents (amplitude peak of the multiple of 0.333Hz and the summation of/5 amplitude peak) × 100 (%).In example shown in table 1, perform 3 same measurements, by the meansigma methods of each value.In addition, numerical value is the example of " 0 ", represents the frequency not occurring the multiple of 0.333Hz.
In addition, as shown in table 3, embodiment 1 and embodiment 2 are disposable diapers that applicant manufactures with non-woven fabrics.Comparative example 1,3 ~ 5 is also the use of the disposable diaper of non-woven fabrics.Comparative example 2,6 is not disposable diaper, but is called the cloth of nap fabric and knitted fabric.
Below, the structure about the disposable diaper of embodiment 1 and embodiment 2 is described.The non-woven fabric plate of embodiment 1 is made up of the fibre structure on upper strata shown below and the fibre structure of lower floor, is endowed upper strata 7g/m
2and lower floor 15g/m
222g/m
2relief pattern, the pitch of adjacent protuberance is the non-woven fabric plate of about 3mm.
The structure of (a) lower floor
In the 1st operation described later, supply the composite fibre as the following structure of the 3rd fiber (fibre structure of lower floor), as the quality 15g/m of per unit area to the 1st card camera
2the 1st mesh sheet, by the processing of regulation as the lower floor of the non-woven fabric plate of embodiment 1.
The core composition of fiber: polyethylene terephthalate (PET, fusing point about 260 DEG C)
The sheath composition of fiber: high density polyethylene (HDPE) (HDPE, fusing point about 130 DEG C)
Very thin degree: 2.2dtex
Fiber is long: 45mm
(b) the 2nd top fiber
Core composition: PET (fusing point 260 DEG C)
Sheath composition: HDPE (fusing point 130 DEG C)
Very thin degree: 2.2dtex
Fiber is long: 45mm
In addition, the fibre weight ratio in the top fiber of the 1st top fiber and the 2nd top fiber, the 1st top fiber is 70%, and the 2nd top fiber is 30%.
The manufacture method of (c) non-woven fabric plate
In the 1st operation, to the 1st card camera supply the 3rd fiber, obtain the 1st mesh sheet.
In the 2nd operation, with the blending ratio specified to the 2nd card camera supply the 1st top fiber, the 2nd top fiber, obtain the 2nd mesh sheet, the 2nd mesh sheet is overlapped in the 1st mesh sheet, obtain compound mesh sheet.
In the 3rd operation, compound mesh sheet is made to be positioned in the side face sucking cylinder.Suck cylinder and there is the inner core that is in the state be fixed and urceolus that is concentric with inner core and the breathability rotated to operating direction MD.Compound mesh sheet is positioned in the side face of urceolus, such as advances to operating direction MD with the speed of 100m/ minute together with urceolus with required speed.Distributing area is formed in inner core.Above distributing area, be provided with the 1st manifold and the 2nd manifold, urceolus is located between distributing area and the 1st, the 2nd manifold.
1st, each of the 2nd manifold has on axial, namely orthogonal with the operating direction MD crisscross CD sucking cylinder with multiple nozzles of required joint slope.The nozzle of the 1st manifold arranges to become the mode parallel with operating direction MD with the nozzle of the 2nd manifold, and each nozzle has required opening diameter, such as diameter 1mm.Have passed and be set to heated air that is temperature required, the heater of such as 200 DEG C and become the 1st and spray air, injected towards compound mesh sheet from each nozzle of the 1st manifold.1st emitted dose of spraying air is adjusted by expulsion pressure, relative to the per surface area of compound mesh sheet, with such as 10Nl/m
2ratio spray.Then, the heated air that have passed the heater being set to temperature required such as 280 DEG C becomes the 2nd and sprays air, injected towards compound mesh sheet from each nozzle of the 2nd manifold.2nd expulsion pressure spraying air is adjusted, relative to the per surface area of compound mesh sheet, with such as 23Nl/m
2ratio spray.In compound mesh sheet, sprayed successively because the 1st injection air and the 2nd sprays air, be positioned at the 1st top fiber immediately below nozzle, the 2nd top fiber, the 3rd fiber move successively along the width of compound mesh sheet, immediately below nozzle, be pre-formed the 1st valley, between the nozzle that crisscross CD arranges and nozzle, be pre-formed protrusion.The nozzle pitch of the 1st manifold, the 2nd manifold is 3mm.
In the 4th operation, compound mesh sheet passes through drying machine.In drying machine, the heated air of the temperature of the surface melting of the fiber of formation mesh sheet (such as 140 DEG C) can be made to be injected into compound mesh sheet, the melting each other of various fiber, the 1st protrusion defined and the 1st valley become does not allow yielding stable state.These protrusions and valley become protrusion and the valley of non-woven fabric plate.
Be cooled to room temperature from drying machine compound mesh sheet out, thus become the non-woven fabric plate that can use as dress article.
In addition, the non-woven fabric plate of embodiment 2 is the use of the non-woven fabric plate of " elastic fibre " and " extensibility fiber " described in Japanese Unexamined Patent Publication 2011-226011 publication.Wherein, the gear pitch of gear extension apparatus is 2.2mm, and the nozzle pitch of steam treatment is 1.0mm.
Table 4 represents during the 1st time shown in table 2 is measured the example of the amplitude peak of the multiple of the 0.333Hz extracted.In addition, only embodiment 1, comparative example 1, comparative example 3 and comparative example 4 is represented in table 2.
[table 4]
As shown in table 4,0.333Hz (333 × 10
-3) ± 0.005 (5 × 10
-3) Hz multiple amplitude peak and calculated as 3_sum.If such as embodiment 1, then 665Hz, 997Hz and 1662 (× 10
-3) Hz is extracted as this frequency.
Fig. 7 is the diagram that the amplitude peak of the frequency of the multiple represented based on 0.333Hz accounts for the ratio (3_sum/sum) of these 5 peak values and the evaluation result according to the comfortableness of the absorbent commodity of the corresponding relation of the measured value of the brain function of NIRS.In addition, table 5 represents the measured value (Oxy-Hbconcentration (z-score)) of this ratio and the brain function according to NIRS.
[table 5]
The numbering of " 1 " shown in the diagram of Fig. 7 ~ " 8 " is " numbering " shown in table 5, corresponding with embodiment 1,2 and comparative example 1 ~ 6.In addition, Fig. 8 represents the NIRS measured value of each embodiment shown in table 5 and comparative example.
As shown in Fig. 7,8 and table 5, be 0.025gfs (25 × 10 making sum
-3gfs) below and the material (embodiment 1,2 and comparative example 2) that 3_sum/sum becomes more than 20% abuts with the skin surface of the waist of testee when, NIRS measured value (Oxy-Hbconcentration (z-score)) shows high value (more than 0.3) at right hemisphere (right side head) and left hemisphere (left side head) both sides.In addition, after to be testee be 44 births of this result 2 ~ 6 months infant meansigma methods.
Based on the analysis result of such data, be 0.025gfs (25 × 10 by sum
-3gfs) below and 3_sum/sum be more than 20% region and NIRS measured value become high level and set up corresponding relation.Specifically, Oxy-Hbconcentration (z-score) more than 0.3 is categorized as " high level ", is less than 0.3 and is categorized as " low value ".
That is, evaluate comfortableness step in, based on the 1st regulation number amplitude peak and (sum) be 0.025gf
.below s and the amplitude peak of the 2nd of frequency spectrum the regulation number and relative to the 1st regulation number amplitude peak and ratio (3_sum/sum) be the region of more than 20%, the corresponding relation with the NIRS measured value higher than setting (0.3), evaluate the comfortableness of the absorbent commodities such as disposable diaper.
(4.2) analytic method 2
In analytic method 2, by the data (with reference to Fig. 6 (a) and (b)) after Fourier transformation, calculate the gradient of the linear near linear that the x-axis of the data after carrying out this Fourier transformation and y-axis are frequency spectrum when logarithm.Namely, in this analytic method, calculate the amplitude peak obtained by carrying out Fourier transformation and, amplitude peak under specifically all frequencies and (summation) and with the gradient of the x-axis of carrying out the data after this Fourier transformation and the y-axis linear near linear that is frequency spectrum when logarithm.
Then, based on this amplitude peak and and frequency spectrum linear near linear gradient with according to the corresponding relation of the measured value of the brain function of NIRS, evaluate the comfortableness of absorbent commodity.
Table 6 represents the example of the analysis result based on this analytic method.
[table 6]
The summation of the amplitude of table 6 represent amplitude under all frequencies and, near linear gradient represents the gradient that the x-axis (frequency axis) of the data after with Fourier transformation and y-axis (amplitude axe) are linear approximation straight line when logarithm.In example shown in table 6, perform 3 same measurements, by the meansigma methods of each value.
Fig. 9 (a) and (b) represent that the x-axis of the data after with Fourier transformation and y-axis are logarithm, the diagram of linear near linear when depicting the value obtained by Fourier transformation.Fig. 9 (a) is the diagram of the linear near linear representing embodiment (embodiment 1), and Fig. 9 (b) is the diagram of the linear near linear representing comparative example (comparative example 4).In addition, in the diagram shown in Fig. 9 (a) He (b), the calculating formula of linear near linear and the 2 power values of R are represented.
As shown in Fig. 9 (a) He (b), the gradient of the linear near linear in embodiment is-0.856, and the gradient of the linear near linear in comparative example is-0.975.
Figure 10 is the diagram of the evaluation result of the comfortableness of the absorbent commodity of the corresponding relation of the measured value representing the gradient based on linear near linear and the brain function according to NIRS.In addition, table 7 represents the measured value (Oxy-Hbconcentration (z-score)) of this inclination and the brain function according to NIRS.
[table 7]
The numbering of " 1 " shown in the diagram of Figure 10 ~ " 8 " is " numbering " shown in table 7, corresponding with embodiment 1,2 and comparative example 1 ~ 6.
As shown in Figure 10 and table 7, be below 0.07gfs when making the summation of amplitude and the material (embodiment 1,2 and comparative example 2) that the gradient of linear near linear is not enough-0.90 abuts with the skin surface of the waist of testee, NIRS measured value (Oxy-Hbconcentration (z-score)) demonstrates high value (more than 0.3) at right hemisphere (right side head) and left hemisphere (left side head) both sides.
Based on the analysis result of such data, make the summation of amplitude be below 0.07gfs and the gradient of linear near linear be not enough-0.90 region and NIRS measured value become high level and set up corresponding relation.Specifically, identically with analytic method 1, be more than 0.3 to be categorized as Oxy-Hbconcentration (z-score) " high level ", 0.3 will be less than and be categorized as " low value ".
Namely, in the step evaluating comfortableness, summation based on the amplitude of frequency spectrum is below 0.07gfs and the not enough region of-0.90 of the gradient of linear near linear and the corresponding relation of the NIRS measured value higher than setting (0.3), evaluates the comfortableness of the absorbent commodities such as disposable diaper.
(5) effect, effect
Then, above-mentioned absorbent commodity (disposable diaper) and the effect of Comfort Evaluation method are described.
First, according to the measurement based on NIRS, the infant wearing disposable diaper feels the difference of sense of touch of the non-woven fabrics that the surface patch etc. of disposable diaper is used distinctively.NIRS measured value (Oxy-Hbconcentration (z-score)) when Figure 11 represents that infant wears disposable diaper and mother of infant stroke the NIRS measured value when buttocks of infant.
" diaper 1 " and " diaper 2 " of Figure 11 is the value of the Oxy-Hbconcentration (z-score) when wearing disposable diaper.The z-score of " diaper 1 " is 0.14, in contrast, the z-score of " diaper 2 " is 0.94, belongs to good.On the other hand, " palm of mother " is the Oxy-Hbconcentration (z-score) of mother when stroking the buttocks of infant.As shown in figure 11, z-score when stroking the buttocks of infant by the palm of mother shows high value (about 1.17), but known, equal according to the surface patch of disposable diaper specification used, and z-score also can be different.Known, generally the value of z-score is higher, more feels comfortable in brains, in the Comfort Evaluation method of present embodiment, is conceived to the difference of such z-score brought by the specification of disposable diaper (non-woven fabrics).
Specifically, as mentioned above, by setting up corresponding relation to the value associated with the frequency spectrum that z-score uprises such frictional resistance and z-score, comfortableness during the wearing of the absorbent commodity such as disposable diaper is evaluated.Can say the frictional resistance measured based on above-mentioned measuring condition be when representing that mother strokes the buttocks of infant approx and wear disposable diaper when situation.
Thus, by the scope by the frequency spectrum based on such frictional resistance, specifically for sum is 0.025gfs (25 × 10
-3gfs) below and 3_sum/sum be the region (situation of analytic method 1) of more than 20%, the summation of the amplitude of frequency spectrum is below 0.07gfs and the region (situation of analytic method 2) of the gradient of linear near linear not enough-0.90 becomes high level with NIRS measured value sets up corresponding relation, the comfortableness that can be evaluated as the material (disposable diaper) of the frequency spectrum of the value with this region of display is high.
That is, according to the Comfort Evaluation method of above-mentioned absorbent commodity, by setting up corresponding relation to based on the measured value of NIRS and the physical property of disposable diaper (surface patch etc.), the comfortableness of absorbent commodity can be evaluated objectively.
In addition, when dress has disposable diaper 10 of numerical range as described above, the measured value based on NIRS obviously uprises, and can improve comfortableness when wearer wears.In addition, because the measured value based on NIRS uprises, comfortableness when wearing can be made to improve more objectively.
(6) other embodiment
As mentioned above, disclose content of the present invention by embodiments of the present invention, but become the discussion of the part of the disclosure and accompanying drawing should not be construed as limiting the present invention.Those skilled in the art obviously can obtain various alternate embodiments, embodiment and application technology according to the disclosure.
Such as, in the above-described embodiment, with ト リ ニ テ ィ ー ラ ボ goods TL701x as measuring device 100, and employ the contact terminal be made up of artificial skin sheet (artificial skin), but measuring device 100 may not be defined in these goods.When obtaining with the measurement result that ト リ ニ テ ィ ー ラ ボ goods TL701x is equal, other measuring device also can be used.
In above-mentioned embodiment (analytic method 1), have selected amplitude peak with the frequency of the multiple of 0.333Hz for benchmark, but this frequency may not be defined in 0.333Hz.Such as, also can decide based on the data shown in Fig. 6 (a) He (b) the many frequency of amplitude peak that multiple repeats.
In the above-described embodiment, be illustrated for disposable diaper, but range of application of the present invention is not limited to disposable diaper, also can be applied to and other absorbent commodity of the contact skin of wearer, such as sanitary napkin etc.In addition, in the above-described embodiment, be illustrated for the disposable diaper of infant, but the invention is not restricted to infant, such as, also can be applied to the disposable diaper of People.
Like this, the present invention is included in the various embodiments etc. do not recorded certainly here.Thus, protection scope of the present invention, according to above-mentioned explanation, is only determined by the specified features of suitable claims.
In addition, by referring to, the full content of No. 2013-065134th, Japan's patent application (application on March 26th, 2013) is placed in present specification.
Industry utilizes probability
Can provide a kind of and set up corresponding relation based on to according to the measured value of near infrared ray optical spectroscopy (NIRS) and the physical property of absorbent commodity, make the absorbent commodity that comfortableness when wearing improves more objectively.
The explanation of Reference numeral
10 ... disposable diaper
20 ... front waist area
25 ... territory, crotch zone
30 ... rear waist area
40 ... absorber
40a ... absorbent core
40b ... core outsourcing portion
50 ... top sheet
60 ... outer load
60a ... backsheet
70 ... flank sheet
75 ... leg pars contractilis
80 ... leg side rivel portion
90 ... restraint zone
100 ... measuring device
200 ... evaluating apparatus
Claims (3)
1. an absorbent commodity, possesses the skin abutted with the skin of wearer and abuts dough sheet, it is characterized in that,
Based on the measuring condition of regulation, the surface that above-mentioned skin abuts dough sheet is stroked along the 1st direction, thus by the amplitude peak of the 1st regulation number to the frequency spectrum obtained carrying out Fourier transformation with the Wave data on the time shaft of frictional resistance that produces on diametical 2nd direction, above-mentioned 1st direction and be below 0.025gfs, and the amplitude peak of the 2nd regulation number of said frequencies spectrum and relative to above-mentioned 1st regulation number amplitude peak and ratio be more than 20%.
2. absorbent commodity according to claim 1, is characterized in that,
Above-mentioned 1st regulation number is 5,
The amplitude peak of above-mentioned 2nd regulation number is selected for benchmark with the frequency of the multiple of 0.333Hz.
3. an absorbent commodity, possesses the skin abutted with the skin of wearer and abuts dough sheet, it is characterized in that,
Based on the measuring condition of regulation, the surface that above-mentioned skin abuts dough sheet is stroked along the 1st direction, thus by the amplitude peak to the frequency spectrum obtained carrying out Fourier transformation with the Wave data on the time shaft of frictional resistance that produces on diametical 2nd direction, above-mentioned 1st direction and be below 0.07gfs, and the gradient not enough-0.90 of the linear near linear of said frequencies spectrum.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-065134 | 2013-03-26 | ||
| JP2013065134A JP6336247B2 (en) | 2013-03-26 | 2013-03-26 | Absorbent articles |
| PCT/JP2014/058182 WO2014157136A1 (en) | 2013-03-26 | 2014-03-25 | Absorbent article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105120819A true CN105120819A (en) | 2015-12-02 |
Family
ID=51624107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480018125.5A Pending CN105120819A (en) | 2013-03-26 | 2014-03-25 | Absorbent article |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6336247B2 (en) |
| KR (1) | KR20150135213A (en) |
| CN (1) | CN105120819A (en) |
| AU (1) | AU2014245946B2 (en) |
| WO (1) | WO2014157136A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7496056B2 (en) | 2020-12-03 | 2024-06-06 | トヨタ紡織株式会社 | Evaluation method for resin fibers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512863A (en) * | 2001-06-06 | 2004-07-14 | ���¼ӱ�Ĥ��Ʒ�ɷ�����˾ | Vacuum formed film topsheets having silky tactile impression |
| US20080119807A1 (en) * | 2002-12-20 | 2008-05-22 | Curro John J | Tufted laminate web |
| CN102482817A (en) * | 2009-05-14 | 2012-05-30 | 尤妮佳股份有限公司 | Liquid-permeable nonwoven fibrous fabric |
| CN102918190A (en) * | 2010-04-16 | 2013-02-06 | 尤妮佳股份有限公司 | Non-woven fabric including elongated fibres and elastic fibres and having unevenness, and method for manufacturing non-woven fabric |
-
2013
- 2013-03-26 JP JP2013065134A patent/JP6336247B2/en active Active
-
2014
- 2014-03-25 WO PCT/JP2014/058182 patent/WO2014157136A1/en active Application Filing
- 2014-03-25 CN CN201480018125.5A patent/CN105120819A/en active Pending
- 2014-03-25 KR KR1020157020621A patent/KR20150135213A/en not_active Application Discontinuation
- 2014-03-25 AU AU2014245946A patent/AU2014245946B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512863A (en) * | 2001-06-06 | 2004-07-14 | ���¼ӱ�Ĥ��Ʒ�ɷ�����˾ | Vacuum formed film topsheets having silky tactile impression |
| US20080119807A1 (en) * | 2002-12-20 | 2008-05-22 | Curro John J | Tufted laminate web |
| CN102482817A (en) * | 2009-05-14 | 2012-05-30 | 尤妮佳股份有限公司 | Liquid-permeable nonwoven fibrous fabric |
| CN102918190A (en) * | 2010-04-16 | 2013-02-06 | 尤妮佳股份有限公司 | Non-woven fabric including elongated fibres and elastic fibres and having unevenness, and method for manufacturing non-woven fabric |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2014245946A1 (en) | 2015-11-05 |
| WO2014157136A1 (en) | 2014-10-02 |
| JP6336247B2 (en) | 2018-06-06 |
| AU2014245946B2 (en) | 2018-10-25 |
| JP2014188115A (en) | 2014-10-06 |
| KR20150135213A (en) | 2015-12-02 |
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