WO2017110696A1 - Absorbent article - Google Patents
Absorbent article Download PDFInfo
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- WO2017110696A1 WO2017110696A1 PCT/JP2016/087652 JP2016087652W WO2017110696A1 WO 2017110696 A1 WO2017110696 A1 WO 2017110696A1 JP 2016087652 W JP2016087652 W JP 2016087652W WO 2017110696 A1 WO2017110696 A1 WO 2017110696A1
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- WIPO (PCT)
- Prior art keywords
- sheet
- skin
- dots
- absorbent article
- colored portion
- Prior art date
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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
Definitions
- the present invention relates to absorbent articles such as disposable diapers, breast milk pads and sanitary napkins.
- An absorbent article having a colored portion that is visible through a liquid-permeable sheet called a top sheet from the skin facing surface side of the absorbent article is known.
- a colored portion having at least two regions of different colors is provided, and these regions create a perception of depth on or through the top sheet.
- Absorbent articles placed in the are described. By creating a perception of depth, it is possible to visually represent the function or action of the secretions being drawn into the absorbent article, giving the user a sense of security before and after use. It is said that.
- Patent Document 1 is designed to visually express the function of an absorbent material that cannot be recognized from the outside by creating a perception of depth, It is not intended to give the impression that the absorbent article has a high absorbent performance.
- An object of the present invention is to give an impression that the absorbent article has high absorption performance to the user by giving the user an impression that holes that are not actually present in the absorbent article. .
- the present invention is embodied in one form by an absorbent article.
- the absorbent article which concerns on one form of this invention is between the absorber, the 1st skin surface sheet which consists of a nonwoven fabric arrange
- the first skin sheet has a region where the formation index is in the range of 180 to 557
- the second skin sheet has a colored portion composed of a plurality of dots long in the first direction, It is visible from the skin facing surface side of the absorbent article through the region of the first skin sheet, and the length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less, and the colored portion.
- the length in the second direction is not less than 0.1 mm and not more than 0.7 mm, and the interval between the colored portions adjacent to each other in the first direction is not less than 0.5 mm and not more than 10 mm, and in the second direction
- the interval between the colored portions adjacent to each other is 0.75 mm or more and 3.5 mm or less.
- the present invention it is possible to give the user an impression that a hole that does not actually exist in the absorbent article, and to give the user an impression that the absorbent article has high absorption performance.
- the top view of the disposable diaper which is an absorptive article concerning one embodiment of the present invention AA line sectional view of a disposable diaper concerning an embodiment same as the above
- the enlarged plan view which shows typically the state seen from the skin opposing surface side of the disposable diaper which concerns on embodiment same as the above.
- the enlarged plan view of the 2nd skin sheet provided in the disposable diaper concerning an embodiment same as the above Explanatory drawing of the effect acquired by embodiment same as the above
- Schematic which shows the example of a change regarding arrangement
- the absorbent article which concerns on one Embodiment of this invention is between the absorber, the 1st skin surface sheet which consists of a nonwoven fabric arrange
- the first skin sheet has a region where the formation index is in the range of 180 to 557
- the second skin sheet has a colored portion composed of a plurality of dots long in the first direction, It is visible from the skin facing surface side of the absorbent article through the region of the first skin sheet, and the length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less, and the colored portion.
- the length in the second direction is not less than 0.1 mm and not more than 0.7 mm, and the interval between the colored portions adjacent to each other in the first direction is not less than 0.5 mm and not more than 10 mm, and in the second direction
- the interval between the colored portions adjacent to each other is 0.75 mm or more and 3.5 mm or less.
- the first skin sheet is made of non-woven fabric, and the formation index of the first skin sheet is in the range of 180 to 557, so that the texture of the first skin sheet is moderately uneven. Light and dark will occur in the dots that can be seen through the first skin sheet from the skin facing surface side of the absorbent article.
- the length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less
- the length of the colored portion in the second direction is 0.1 mm or more and 0.7 mm or less, and is adjacent to the first direction.
- the interval between the colored portions is 0.5 mm or more and 10 mm or less
- the interval between the colored portions adjacent in the second direction is 0.75 mm or more and 3.5 mm or less. Such an impression can be given.
- the illusion effect that the shade of the dot is a shadow of the hole is produced, and the impression that the dot is not a simple pattern or pattern but a hole is produced.
- the dots By making the dots long in the direction (first direction) along the orientation of the fibers in the first skin sheet, the dots look like the shadow of the fibers, and the shadow is expressed on the second skin sheet Therefore, it is possible to enhance the effect that the dots appear to be holes. Thereby, it is possible to give the user an impression that a hole that does not actually exist in the absorbent article, and to give the user an impression that the absorbent article has high absorption performance.
- the above area of the first skin sheet preferably has an average absorbance in the range of 275 to 1694.
- the colored portion includes a plurality of dot rows in which dots are arranged in the first direction, and the dot rows are preferably arranged apart from each other in the second direction.
- the first skin sheet extends over a plurality of dots constituting the row.
- the part which becomes a shadow of a fiber is formed favorably, the effect which makes a dot look as if it is a hole can be improved, and the impression that a hole exists in an absorptive article can further be improved.
- the dots adjacent in the second direction are shifted from each other in the first direction between the plurality of dot rows.
- the interval between adjacent dots in the second direction is constant and is in the range of 0.75 to 3.5 mm.
- the colored portion has a size along the second direction of the dots smaller than the interval between adjacent dot rows.
- the colored portion preferably has a ratio A / B in the range of 1 to 18.5, where A is the dot size in the first direction and B is the dot size in the second direction.
- the dots are in the direction along the fiber orientation in the first skin sheet (first direction). Therefore, the shape can be suitably long so that it looks like a hole.
- FIG. 1 is a plan view schematically showing an overall configuration of a disposable diaper 10 which is an absorbent article according to the present embodiment.
- FIG. 1 shows a disposable diaper 10 in an unfolded state before being worn on the body.
- the disposable diaper 10 is not limited to a tape type but may be a pants type.
- the disposable diaper 10 is located between the front waistline region Sf applied to the front surface of the waistline of the wearer, the rear waistline region Sb addressed to the back surface of the waistline, the front waistline region Sf, and the rear waistline region Sb.
- the crotch region Sc applied to the wearer's crotch region is roughly divided into a chassis 20, an absorbent body 30, a first skin sheet 40, and a second skin sheet 50.
- a direction in which the crotch region Sc extends between the front waistline region Sf and the rear waistline region Sb is defined as a first direction L, which is parallel to the surface of the first skin sheet 40 and orthogonal to the first direction L.
- the direction to be taken is the second direction W.
- the chassis 20 forms the overall outer shape of the disposable diaper 10, constitutes a diaper main body, and fixes the absorber 30 relative to the wearer's body.
- the chassis 20 (specifically, the back nonwoven fabric 21 to be described later) forms a pair of side flaps 60 extending outward in the second direction W in the rear waistline region Sb.
- a fastening tape 105 is attached to the side flap 60.
- a hook sheet 110 is affixed to the fastening tape 105. By engaging the hook sheet 110 with a target tape 120 provided in the front waistline region Sf, the disposable diaper 10 can be maintained in the mounted state. Is possible.
- the absorber 30 (only its outline is shown by a thick dotted line in FIG. 1) has a vertically long rectangular shape as a whole, and the skin facing surface of the chassis 20 in a state where the longitudinal direction coincides with the first direction L. Is placed on top.
- a first skin sheet (hereinafter referred to as “top sheet”) 40 is disposed on the skin facing surface side of the absorbent body 30 and forms the inner surface of the disposable diaper 10 that directly contacts the wearer's skin.
- the top sheet 40 is comprised with the white nonwoven fabric which has liquid permeability, and is specifically comprised with the air through nonwoven fabric which has the average light absorbency and formation index of a predetermined range.
- the 2nd skin sheet 50 embodies the coloring part 55 concerning this embodiment.
- the second skin sheet 50 is realized as an upper covering sheet having liquid absorbency, and in other words, between the absorbent body 30 and the top sheet 40, in other words, on the skin facing surface side of the absorbent body 30,
- the top sheet 40 is disposed on the non-skin facing surface side.
- the upper covering sheet 50 is made of a tissue material provided with a colored portion 55 by printing, and has an outer shape that substantially matches the absorber 30 in the plan view of FIG.
- the upper covering sheet 50 constitutes a member generally called a core wrap together with the lower covering sheet 35 described later.
- the disposable diaper 10 includes a first elastic body 70 that forms an upright three-dimensional cuff on the outer side in the second direction W with respect to the absorbent body 30, and a chassis corresponding to the circumference of the wearer's leg.
- 20 is provided with a second elastic body 80 that imparts stretchability in the first direction L.
- the first elastic body 70 extends from the front waistline region Sf to the rear waistline region Sb on the outside of the absorber 30 and expands and contracts in the first direction L.
- the second elastic body 80 extends over the entire crotch region Sc at the side edge of the chassis 20 corresponding to the circumference of the wearer's leg, and expands and contracts in the first direction L.
- the three-dimensional cuff formed by the first elastic body 70 surrounds the urination position in the second direction W, and can prevent leakage of excrement from the urination position toward the outside in the second direction W. Furthermore, the stretchability is imparted to the side edge of the chassis 20 by the second elastic body 80, so that the fit of the disposable diaper 10 around the legs can be enhanced.
- FIG. 2 is a cross-sectional view of the disposable diaper 10 shown in FIG.
- the chassis 20 is configured by laminating a plurality of sheet members. Specifically, the chassis 20 forms the outermost surface of the disposable diaper 10, and a back nonwoven fabric 21 that contacts the wearer's clothes, and a back film 22 disposed between the absorbent body 30 and the back nonwoven fabric 21.
- the back nonwoven fabric 21 and the back film 22 are joined by an adhesive (for example, a hot melt adhesive).
- the back nonwoven fabric 21 is hydrophobic, and the back film 22 is liquid impermeable.
- the absorber 30 is in a state of being covered with an upper covering sheet 50 and a liquid-absorbing lower covering sheet 35 configured as a separate sheet member from the upper covering sheet 50.
- a tissue material is used for the lower covering sheet 35, and the absorber 30 is covered with the lower covering sheet 35 on the bottom surface that is the non-skin facing surface and the two side edges that extend in the first direction L. ing.
- covered with the lower coating sheet 35 is formed in the skin opposing surface side of the absorber 30, and the both sides of the 1st direction L, and the upper coating sheet 50 is arrange
- the entire absorber 30 is covered with the upper cover sheet 50 and the lower cover sheet 35.
- the top sheet 40 covers the entire upper covering sheet 50 on the skin facing surface side of the absorbent body 30 and extends beyond the side edge of the upper covering sheet 50 to the outside in the second direction W.
- the side sheet 25 is provided on the outer side in the second direction W with respect to the top sheet 40, and the side sheet 25 has its inner edge folded back to the outside and overlapped with the side edge of the top sheet 40.
- the first elastic body 70 that forms a three-dimensional cuff is sandwiched between the folded portions of the side seat 25.
- the side sheet 25 extends outward in the second direction W following the back nonwoven fabric 21 of the chassis 20 and is joined to the back nonwoven fabric 21 to form a side flap 60.
- FIG. 3 is an enlarged plan view schematically showing a state of the disposable diaper 10 as viewed from the skin facing surface side.
- FIG. 4 is an enlarged plan view of the upper covering sheet 50, and shows an enlarged color portion 55 provided on the upper covering sheet 50.
- the upper covering sheet 50 is provided with a colored portion 55 by printing on the skin facing surface.
- the printing method of the coloring part 55 may be a method using ink such as flexographic printing, gravure printing, flat printing or on-demand printing, or may be a method using pressure sensitive ink or colored hot melt adhesive. Good.
- the tissue material employed in the upper covering sheet 50 has a narrow gap between the fibers compared to the non-woven fabric, the ink tends to remain on the surface of the material during printing. It is possible to form a uniform printed portion without unevenness.
- employing a non-woven fabric as the material of the upper covering sheet 50 is not excluded.
- the colored portion 55 of the upper covering sheet 50 includes a plurality of dots that are long in the first direction L.
- the “dot” is not limited to a circle or an ellipse, but is interpreted as a concept including a “segment” of a line that forms one straight line as a whole, such as a broken line (dotted line), a one-dot chain line, or a two-dot chain line.
- the dots 55 shown in FIG. 4 are broken line segments.
- the dots 55 constitute a dot row 55A composed of a plurality of dots arranged in the first direction L at a predetermined interval, and the dot rows 55A are arranged apart from each other in the second direction W.
- the dimensions of the dots 55 are preferably such that the length A in the first direction L is in the range of 0.5 mm to 1.85 mm, and the width B in the second direction W is in the range of 0.1 mm to 0.7 mm. Is preferred.
- the length A of the dots 55 is more preferably in the range of 0.5 mm to 1.5 mm.
- the interval G1 between the dots 55 adjacent in the first direction L is preferably in the range of 0.5 mm to 10 mm
- the interval G2 between the dots 55 adjacent in the second direction W is 0.75 mm to 3 mm.
- the distances G1 and G2 between the dots 55 are more preferably in the range of 0.5 mm to 4 mm and 0.75 mm to 2.5 mm, respectively.
- the dot 55 has a length A that is greater than or equal to the width B (B ⁇ A), and the ratio A / B of the length A to the width B is in the range of 1 to 18.5, more preferably. Is in the range of 1-10.
- the width B of the dots 55 is smaller than the interval G2 between the dot rows 55A adjacent in the second direction W.
- the dots 55 adjacent in the second direction W are shifted from each other in the first direction L and arranged in a staggered manner among the plurality of dot rows 55A.
- the dots 55 may be arranged on a straight line parallel to the second direction W between the adjacent dot rows 55A.
- the dots 55 are provided not only on the entire skin facing surface of the upper covering sheet 50 but also on a part of the skin facing surface of the upper covering sheet 50 with respect to at least one of the first direction L and the second direction W. May be provided only.
- the color of the dots 55 can be appropriately selected in consideration of the visibility. Specifically, all primary colors such as white, black, red, blue, purple, orange, yellow, green and indigo, and their lighter colors or mixed colors thereof can be selected.
- the color of the dots 55 constituting the colored portion is similar to the ground color of the upper covering sheet 50, and is more than the ground color. Is preferably a dark color.
- the advancing color (bright) is expressed in the non-colored portion where the dots 55 are not printed, while the backward color (dark) is expressed by the dots 55 in the colored portion.
- the upper cover sheet 50 is covered with the top sheet 40 on the skin contact surface side.
- the top sheet 40 is an air-through type white nonwoven fabric.
- the top sheet 40 has a fiber orientation parallel to the first direction L, and has a predetermined range of average absorbance and formation index.
- the top sheet 40 has an average absorbance in the range of 275 to 1694 and a formation index in the range of 180 to 557.
- the top sheet 40 is not limited to the case where the entire surface has the average absorbance and the formation index within the above range, but may have only a part of the average absorbance within the above range.
- the overall basis weight of the top sheet 40 is less than 60 gsm, preferably in the range of 18 gsm to 44 gsm.
- the top sheet 40 is not limited to an air-through nonwoven fabric, and may be composed of various nonwoven fabrics such as point bonds, spun bonds, and SMS (spun bond / melt blown spun bond). Furthermore, the color of the nonwoven fabric constituting the top sheet 40 is not limited to white, and can be appropriately selected in consideration of the visibility of the colored portion 55 of the upper covering sheet 50.
- FIG. 3 shows a high absorbance region 40A and a low absorbance region 40B formed on the top sheet 40 by applying formation unevenness.
- the high absorbance region 40A is a region determined to have an absorbance higher than the threshold value as a result of the binarization process using the average absorbance of the entire top sheet 40 as a threshold value.
- the low absorbance region 40B is a region determined to have an absorbance lower than the threshold value as a result of the binarization process.
- the dots 55 of the upper covering sheet 50 are visible from the skin facing surface side of the disposable diaper 10 through both the high absorbance region 40 ⁇ / b> A and the low absorbance region 40 ⁇ / b> B of the top sheet 40.
- the average absorbance and formation index of the top sheet 40 are measured using a formation tester (FMT-MIII) available from Nomura Corporation.
- FMT-MIII formation tester
- a non-woven fabric sample of A4 size (length 29.7 cm ⁇ width 21.0 cm) is placed on a sample stage, and a transmission image when the light of an irradiation lamp is applied to the sample is taken with a two-dimensional CCD camera.
- the captured image is decomposed into an appropriate number of pixels (for example, 320 ⁇ 320 pixels), the intensity of light received by each pixel is measured, and the absolute transmittance t (%) of light is expressed by the following formula (1 ) For each pixel.
- the absolute transmittance refers to the light transmittance for each pixel when light is transmitted through the sample itself
- the average absorbance refers to the average value of absorbance obtained for the entire A4 size sample.
- V100 intensity of illumination lamp on V0: intensity of illumination lamp off
- Vt intensity of illumination lamp on with sample placed
- Vr intensity of illumination lamp off with sample on and absolute transmittance t below
- the top sheet 40 is made of non-woven fabric, and the formation index of the top sheet 40 is in the range of 180 to 557, so that an appropriate unevenness is imparted to the texture of the top sheet 40, whereby a disposable diaper
- the dots 55 seen through the top sheet 40 from the side facing the skin 10 are shaded. This creates the illusion that the shades are shadows of the holes, and the dots 55 are not merely patterns or patterns. This produces an effect that looks like
- the dot 55 looks like the shadow of a fiber by making the shape of the dot 55 long in the 1st direction L along the orientation of the fiber in the top sheet 40, the shadow is expressed on the upper coating sheet 50.
- the effect that the dots 55 appear as if they are holes can be enhanced.
- the direction in which the dot row 55A extends coincide with the first direction L along the fiber orientation in the top sheet 40, the shadow of the fiber of the top sheet 40 over the plurality of dots 55 constituting the row 55A. This part is formed well. Thereby, the effect which looks as if the dot 55 is a hole can be heightened, and the impression that the hole exists in the disposable diaper 10 can further be heightened.
- the user is given an impression that a hole that is not actually present in the disposable diaper 10, and the user is impressed that the disposable diaper 10 has high absorption performance. It becomes possible.
- the average absorbance of the top sheet 40 in the range of 275 to 1694, the visibility from the skin facing surface side of the plurality of dots 55 constituting the colored portion of the upper covering sheet 50 is ensured.
- the absorbance is lower than 275, the top sheet 40 is excessively transparent, and the impression as if the dots 55 are simple patterns or symbols is enhanced.
- the absorbance is higher than 1694, the shielding property of the top sheet 40 is increased, and the dots 55 may be difficult to see from the skin facing surface side of the disposable diaper 10.
- the interval G2 between the dots 55 adjacent in the second direction W is constant and falls within the range of 0.75 mm to 3.5 mm, so that the dots 55 are appropriately densely packed, and the entire top sheet 40 is covered. It is possible to appropriately ensure the appearance frequency at which the dots 55 are visually recognized. Thereby, even in a region where the absorbance is relatively high (for example, the high absorbance region 40A), the dots 55 appear on the skin facing surface side through the top sheet 40, and the top sheet 40 is between the colored portion and the other non-colored portions. It is possible to further maintain the impression that a hole is present in the disposable diaper 10 while maintaining the contrast through the medium.
- the interval G1 between the dots 55 adjacent in the first direction L is preferably within a range of 0.5 mm to 10 mm.
- the color difference between the colored portion and the non-colored portion other than the colored portion via the top sheet 40 is preferably in the range of 3.2 to 13, and the color difference in such a range is set. Further, the contrast between the colored portion and the non-colored portion seen through the top sheet 40 becomes better, and it becomes easy to visually recognize the dots 55 from the skin facing surface side.
- the width B of the dots 55 becomes narrower than the non-colored portion, and the depth of the hole in which the dots 55 are generated is reduced. Since an impression is emphasized, the impression that a hole exists in the disposable diaper 10 can be further enhanced.
- the dots 55 are moderate with respect to the first direction L along the fiber orientation in the top sheet 40. It is possible to make the dimensions suitable for making it look like a hole.
- FIG. 5 is a diagram for explaining the effect obtained by the present embodiment, and is a comparison of how dots 55 are obtained when different nonwoven fabrics are used as the top sheet 40.
- a to N are samples of the nonwoven fabric used for the evaluation, and specifically, as follows.
- both the samples C and E are concavo-convex air-through non-woven fabrics, but the sample C is concavo-convex formed by an air jet method, whereas the sample E is mechanical secondary processing (gear processing). ) To form irregularities.
- the air jet method the fiber in the portion corresponding to the concave portion is blown away by the air flow, so that a difference in basis weight occurs between the portion corresponding to the convex portion.
- the sample D is also formed by the air jet method similarly to the sample C. However, the sample D is different from the sample C in the fiber diameter and fiber type, and also in the air blowing interval.
- samples I and J not only differ in basis weight, but also differ in fiber type.
- Numbers 1 to 32 indicate the upper covering sheet 50 used for the evaluation, and the length A and width B of the dots 55 and the intervals G1 and G2 between the dots 55 are changed between the sheets with different numbers.
- the average absorbance is preferably in the range of 275 to 1694, and the formation index is preferably in the range of 180 to 557.
- the basis weight of the top sheet is preferably less than 60 gsm. When the basis weight of the top sheet is 60 gsm or more, it is difficult to visually recognize the colored portion through the top sheet, and it is difficult to exhibit a visual effect that the colored portion is a hole.
- the length A of the dot 55 and the interval G1 in the first direction L are respectively shown.
- the width B is in the range of 0.1 mm to 0.7 mm
- the gap G2 in the second direction W is in the range of 0.75 mm to 3.5 mm. Good evaluation of ⁇ or ⁇ is obtained.
- the length A is in the range of 0.5 mm to 1.75 mm.
- the gap G1 in one direction L is in the range of 0.5 mm to 10 mm, a good evaluation of ⁇ is obtained.
- FIG. 6 is a plan view of a disposable diaper 10 ′ showing a modification example regarding an object on which a coloring part is provided.
- the colored portion is provided in the upper covering sheet 50 disposed between the absorbent body 30 and the top sheet 40 as a separate sheet member from the lower covering sheet 35 surrounding the absorbent body 30. .
- the colored portion may be provided on both the upper cover sheet 50 and the lower cover sheet 35, or may be provided only on the lower cover sheet 35 without being provided on the upper cover sheet 50.
- the upper covering sheet 50 and the lower covering sheet 35 constitute a “second skin face sheet” and give the user the impression that a hole exists over the entire skin facing surface of the absorbent body 30. Is possible.
- the lower covering sheet 35 constitutes a “second skin sheet”, and the impression that the holes are unevenly distributed in the region near the side edge of the absorber 30 can be emphasized.
- printing can be employed in any example.
- the whole absorber 30 is surrounded by one coating sheet 35 ', and the coloring part is provided in the part which touches the skin opposing surface of the absorber 30 among coating sheet 35'.
- the covering sheet 35 ′ constitutes a “second skin sheet”.
- the colored portion is provided on at least one of the upper covering sheet 50 and the lower covering sheet 35 surrounding the absorber 30.
- a coloring part is provided in what is called a second sheet arrange
- the second sheet constitutes the “second skin sheet”.
- FIG. 7 is a schematic diagram schematically illustrating a modification example regarding the configuration of the coloring portion.
- side portions between the center in the second direction W and the central portion in the vicinity thereof in the upper covering sheet 50 and the portions on both sides sandwiching the central portion (hereinafter referred to as “side portions”).
- the density of the dots 55 is different, and in the center, the interval G21 between the dots 551 in the second direction W is narrower than the interval G22 in the side portion. This makes it possible to emphasize the impression that more holes are present in the central part near the urination position.
- the length A1 of the dot 551 is shorter than the length A2 of the side portion in the central portion of the upper covering sheet 50.
- the width B1 of the dot 551 is larger than the width B2 at the side in the central portion of the upper covering sheet 50.
- disposable diapers 10, 10 have been adopted as absorbent articles.
- the absorbent article is not limited to a disposable diaper, and may be a breast milk pad or a sanitary napkin.
- FIG. 8 is a plan view of a breast milk pad 100 which is an absorbent article according to another embodiment of the present invention.
- FIG. 9 is a cross-sectional view of the breast milk pad 100 shown in FIG. 8 taken along line BB.
- the breast milk pad 100 includes an absorber 130, and the absorber 130 is covered with two covering sheets (an upper covering sheet 151 and a lower covering sheet 152) having liquid absorbency.
- these two cover sheets 151 and 152 constitute a “second skin sheet”.
- the upper cover sheet 151 has a dimension that substantially matches the absorber 130 in the plan view of FIG. 8, and is disposed on the skin facing surface of the absorber 130.
- the lower covering sheet 152 covers the bottom surface which is the non-skin facing surface of the absorbent body 130 and the two side edges extending in the first direction L, and the both end edges overlap with the side edges of the upper covering sheet 151. It is bent and arranged.
- the nonwoven fabric 140 which comprises a "1st skin surface sheet” is arrange
- the nonwoven fabric 140 forms a contact surface for the wearer.
- the upper covering sheet 151 and the lower covering sheet 152 are provided with a colored portion over the entire surface thereof, and the colored portion is aligned with the fiber orientation of the nonwoven fabric 140 in any of the covering sheets 151 and 152. It is composed of dots having a long shape in the first direction L, and is arranged so as to constitute a dot row continuous in the first direction L.
- the upper and lower dots also overlap at the portion where the two covering sheets 151 and 152 overlap, and these overlapping dots are darker through the nonwoven fabric 140 than the portion where only the upper covering sheet 151 is disposed. Appears as a shadow. Thereby, it is used between the area
- a side edge in the second direction W is provided in the breast milk pad 100 shown in FIG.
- the dots of the upper covering sheet 151 overlap with the blank area of the lower covering sheet 152, so that the area in the central area Z where only the upper covering sheet 151 is arranged is smaller.
- absorbent articles according to the first to third modifications will be described.
- the same components as those in the above-described embodiment are denoted by the same reference numerals and the description thereof is omitted.
- Absorbent articles according to Modifications 1 to 3 are different from the embodiment in the configuration of the colored portion. Moreover, the structure of the coloring part is the same over the 2nd skin sheet as for the absorbent article which concerns on the modification 1.
- FIG. Absorbent articles according to Modification 2 and Modification 3 are different in the configuration of the colored portion at the center and the configuration of the colored portion at the side. Table 1 shows the configuration of the first skin sheet and the configuration of the second skin sheet according to the absorbent article according to Modifications 1 to 3.
- the coloring part of this invention is comprised as follows.
- the length (A) of the colored part in the first direction 0.5 mm to 1.85 mm
- the length (B) of the colored part in the second direction 0.1 mm to 0.7 mm.
- the colored portion can give an impression like an opening. More preferably, the distance between the colored parts adjacent in the first direction (G1): 0.5 mm or more and 10 mm or less, and the distance between the colored parts adjacent in the second direction (G2): 0.75 mm or more. By being 3.5 mm or less, the colored part can give an impression like an opening more.
- the first direction is the longitudinal direction and the second direction is the width direction.
- the absorbent article according to the present invention includes an embodiment in which the first direction is the width direction and the second direction is the longitudinal direction.
- the fiber orientation direction in the first skin sheet is the width direction.
- ascertain the absorption performance of an absorbent article by the visual effect of the skin opposing surface of an absorbent article can be provided.
- Disposable diapers DESCRIPTION OF SYMBOLS 20 ... Chassis 30 ... Absorber 35 ... Lower coating sheet 40 ... Top sheet (1st skin sheet) 40A: High absorbance region 40B: Low absorbance region 50: Upper covering sheet (second skin sheet) 55 ... dot (colored part) 55A ... dot row 60 ... side flap L ... first direction W ... second direction A ... dot length B ... dot width G1 ... dot spacing in the first direction G2 ... dot spacing in the second direction 100 ... breast milk Pad (absorbent article) 130 ... Absorber 140 ... Non-woven fabric (first skin sheet) 151 ... Upper covering sheet (second skin sheet) 152 ... lower covering sheet (second skin sheet)
Abstract
Description
シャーシ20は、複数のシート部材を積層して構成されている。具体的には、シャーシ20は、使い捨ておむつ10の最も外側の表面を形成し、着用者の衣服に当接するバック不織布21と、吸収体30とバック不織布21との間に配置されたバックフィルム22とで構成され、バック不織布21とバックフィルム22とは、接着剤(例えば、ホットメルト接着剤)により接合されている。バック不織布21は、疎水性であり、バックフィルム22は、液不透過性である。 FIG. 2 is a cross-sectional view of the
The
トップシート40の平均吸光度および地合指数は、野村商事株式会社から入手可能なフォーメーションテスター(FMT-MIII)を用いて測定する。A4サイズ(縦29.7cm×横21.0cm)の不織布試料を試料台に載置し、試料に照射ランプの光を当てた際の透過像を二次元CCDカメラで撮影する。そして、撮影された像を適切な画素数(例えば、320×320画素)に分解し、それぞれの画素が受ける光の強さを測定し、光の絶対透過率t(%)を下式(1)により画素毎に算出する。ここで、絶対透過率とは、試料自体に光を透過させた場合の、画素毎の光の透過率をいい、平均吸光度とは、A4サイズの試料全体について得られる吸光度の平均値をいう。 Here, a method for measuring the average absorbance and the formation index will be described.
The average absorbance and formation index of the
ここで、上式(1)に示す変数は、夫々次のようである。 Absolute transmittance t = (Vt−Vr) / (V100−V0) × 100% (1)
Here, the variables shown in the above equation (1) are as follows.
V0:照射ランプ消灯の光度
Vt:試料を載せた状態での照射ランプ点灯の光度
Vr:試料を載せた状態での照射ランプ消灯の光度
そして、絶対透過率tを下式(2)により吸光度Eに換算し、得られた吸光度Eから下式(3)および(4)により地合指数を算出する。 V100: intensity of illumination lamp on V0: intensity of illumination lamp off Vt: intensity of illumination lamp on with sample placed Vr: intensity of illumination lamp off with sample on and absolute transmittance t below It converts into the light absorbency E by Formula (2), and a formation index is calculated from the obtained light absorbency E by following Formula (3) and (4).
地合指数=吸光度Eの変動係数×10 …(3)
変動係数=吸光度Eの標準偏差/平均吸光度×100% …(4)
本実施形態によれば、次のような効果を得ることができる。 Absorbance E = 2-logt (2)
Formation index = Coefficient of variation of absorbance E × 10 (3)
Coefficient of variation = standard deviation of absorbance E / average absorbance × 100% (4)
According to this embodiment, the following effects can be obtained.
B:エアスルー不織布(坪量25gsm)
C:凹凸エアスルー不織布(坪量25gsm)
D:凹凸エアスルー不織布(坪量27gsm)
E:凹凸エアスルー不織布(坪量25gsm)
F:エアスルー不織布(坪量40gsm)
G:スパンボンド不織布(坪量13gsm)
H:凹凸スパンボンド不織布(坪量18gsm)
I:スパンボンド不織布(坪量30gsm)
J:スパンボンド不織布(坪量60gsm)
K:ポイントボンド不織布(坪量23gsm)
L:SMS不織布(坪量10gsm)
M:SMS不織布(坪量35gsm)
N:エアスルー不織布(坪量44gsm) A: Air-through nonwoven fabric (basis weight 18 gsm)
B: Air-through nonwoven fabric (
C: Uneven air-through nonwoven fabric (
D: Uneven air-through nonwoven fabric (basis weight 27 gsm)
E: Uneven air-through nonwoven fabric (
F: Air-through nonwoven fabric (
G: Spunbond nonwoven fabric (basis weight: 13 gsm)
H: Uneven spunbonded nonwoven fabric (basis weight 18 gsm)
I: Spunbond nonwoven fabric (
J: Spunbonded nonwoven fabric (
K: Point bond nonwoven fabric (basis weight 23gsm)
L: SMS nonwoven fabric (
M: SMS nonwoven fabric (
N: Air-through nonwoven fabric (basis weight 44 gsm)
以上の説明では、吸収体30を包囲する下部被覆シート35とは別体のシート部材として、吸収体30とトップシート40との間に配置される上部被覆シート50に着色部が設けられていた。 FIG. 6 is a plan view of a
In the above description, the colored portion is provided in the
図7(a)に示す例では、上部被覆シート50のうち、第2方向Wに関する中央およびその近傍の中央部と、中央部を挟む両側の部分(以下「側部」という)との間でドット55の密度が異なり、中央部において、第2方向Wにおけるドット551同士の間隔G21が側部における間隔G22よりも狭められている。これにより、排尿位置に近い中央部により多くの孔が存在する印象を強調することが可能となる。 FIG. 7 is a schematic diagram schematically illustrating a modification example regarding the configuration of the coloring portion.
In the example shown in FIG. 7A, between the center in the second direction W and the central portion in the vicinity thereof in the
・着色部の第1方向の長さ(A):0.5mm以上1.85mm以下
・着色部の第2方向の長さ(B):0.1mm以上0.7mm以下
・第1方向に隣接する着色部同士の間隔(G1):0.5mm以上10mm以下
・第2方向に隣接する着色部同士の間隔(G2):0.75mm以上3.5mm以下
・AとBの関係:A>B
・G2とG1の関係:G2<G1、G2>G1及びG1=G2のいずれか
・G2とBの関係:G2>B
特に、着色部の第1方向の長さ(A):0.5mm以上1.85mm以下であり、かつ着色部の第2方向の長さ(B):0.1mm以上0.7mm以下であることにより、着色部が開口のような印象を与えることができる。また、より好ましくは、第1方向に隣接する着色部同士の間隔(G1):0.5mm以上10mm以下であり、・第2方向に隣接する着色部同士の間隔(G2):0.75mm以上3.5mm以下であることにより、着色部が開口のような印象をより与えることができる。 According to the above-mentioned embodiment and modification, it is preferable that the coloring part of this invention is comprised as follows.
-Length of colored portion in first direction (A): 0.5 mm to 1.85 mm-Length of colored portion in second direction (B): 0.1 mm to 0.7 mm-Adjacent to first direction Interval between colored parts (G1): 0.5 mm or more and 10 mm or less Interval between colored parts adjacent in the second direction (G2): 0.75 mm or more and 3.5 mm or less Relation between A and B: A> B
-Relationship between G2 and G1: Any of G2 <G1, G2> G1 and G1 = G2-Relationship between G2 and B: G2> B
In particular, the length (A) of the colored part in the first direction: 0.5 mm to 1.85 mm, and the length (B) of the colored part in the second direction: 0.1 mm to 0.7 mm. Thus, the colored portion can give an impression like an opening. More preferably, the distance between the colored parts adjacent in the first direction (G1): 0.5 mm or more and 10 mm or less, and the distance between the colored parts adjacent in the second direction (G2): 0.75 mm or more. By being 3.5 mm or less, the colored part can give an impression like an opening more.
20…シャーシ
30…吸収体
35…下部被覆シート
40…トップシート(第1肌面シート)
40A…高吸光度領域
40B…低吸光度領域
50…上部被覆シート(第2肌面シート)
55…ドット(着色部)
55A…ドット列
60…サイドフラップ
L…第1方向
W…第2方向
A…ドットの長さ
B…ドットの幅
G1…第1方向におけるドットの間隔
G2…第2方向におけるドットの間隔
100…母乳パッド(吸収性物品)
130…吸収体
140…不織布(第1肌面シート)
151…上部被覆シート(第2肌面シート)
152…下部被覆シート(第2肌面シート) 10. Disposable diapers (absorbent articles)
DESCRIPTION OF
40A:
55 ... dot (colored part)
55A ... dot
130 ...
151 ... Upper covering sheet (second skin sheet)
152 ... lower covering sheet (second skin sheet)
Claims (6)
- 吸収体と、
前記吸収体の肌対向面側に配置された、不織布からなる第1肌面シートと、
前記吸収体と前記第1肌面シートとの間に配置された第2肌面シートと、を備え、
前記第1肌面シートにおける繊維の配向に沿った第1方向と、前記第1方向と直交する第2方向とを有する吸収性物品であって、
前記第1肌面シートは、地合指数が180~557の範囲にある領域を有し、
前記第2肌面シートは、前記第1方向に長い複数のドットからなる着色部を有し、
前記着色部は、前記第1肌面シートの前記領域を通じて吸収性物品の肌対向面側から視認可能であり、
前記着色部の前記第1方向の長さは、0.5mm以上1.85mm以下であり、
前記着色部の前記第2方向の長さは、0.1mm以上0.7mm以下であり、
前記第1方向に隣接する前記着色部同士の間隔は、0.5mm以上10mm以下であり、
前記第2方向に隣接する前記着色部同士の間隔は、0.75mm以上3.5mm以下である、吸収性物品。 An absorber,
A first skin sheet made of a nonwoven fabric, disposed on the skin-facing surface side of the absorbent body,
A second skin sheet disposed between the absorbent body and the first skin sheet;
An absorbent article having a first direction along the fiber orientation in the first skin sheet and a second direction orthogonal to the first direction,
The first skin sheet has a region where the formation index is in a range of 180 to 557,
The second skin sheet has a colored portion composed of a plurality of dots long in the first direction,
The colored portion is visible from the skin facing surface side of the absorbent article through the region of the first skin sheet,
The length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less,
The length of the colored portion in the second direction is 0.1 mm or more and 0.7 mm or less,
An interval between the colored portions adjacent to each other in the first direction is 0.5 mm or more and 10 mm or less,
The absorbent article, wherein an interval between the colored portions adjacent to each other in the second direction is not less than 0.75 mm and not more than 3.5 mm. - 前記第1肌面シートの前記領域は、平均吸光度が275~1694の範囲にある、請求項1に記載の吸収性物品。 The absorbent article according to claim 1, wherein the region of the first skin sheet has an average absorbance in the range of 275 to 1694.
- 前記着色部は、前記ドットが前記第1方向に並んだ複数のドット列を含み、
前記ドット列は、前記第2方向に互いに隔てて配置されていることを特徴とする、請求項1又は請求項2に記載の吸収性物品。 The colored portion includes a plurality of dot rows in which the dots are arranged in the first direction,
The absorbent article according to claim 1 or 2, wherein the dot rows are arranged apart from each other in the second direction. - 前記着色部は、複数のドット列の間で、前記第2方向に隣り合うドットが前記第1方向に互いにずれて配置されていることを特徴とする、請求項3に記載の吸収性物品。 The absorbent article according to claim 3, wherein in the coloring portion, dots adjacent in the second direction are arranged so as to be shifted from each other in the first direction between a plurality of dot rows.
- 前記着色部は、前記ドットの前記第2方向に沿った寸法が隣り合う前記ドット列の間隔よりも小さいことを特徴とする、請求項1から請求項4のいずれかに記載の吸収性物品。 The absorbent article according to any one of claims 1 to 4, wherein the colored portion has a dimension along the second direction of the dots smaller than an interval between the adjacent dot rows.
- 前記着色部は、前記第1方向における前記ドットの寸法をAとし、前記第2方向における前記ドットの寸法をBとしたときに、比A/Bが1~18.5の範囲にあることを特徴とする、請求項1から請求項5のいずれかに記載の吸収性物品。 The colored portion has a ratio A / B in the range of 1 to 18.5, where A is the size of the dots in the first direction and B is the size of the dots in the second direction. The absorbent article according to any one of claims 1 to 5, wherein the absorbent article is characterized.
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CN201680075020.2A CN108472177B (en) | 2015-12-25 | 2016-12-16 | Absorbent article |
BR112018012983A BR112018012983A2 (en) | 2015-12-25 | 2016-12-16 | absorbent article |
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JP2015254246 | 2015-12-25 | ||
JP2016-159324 | 2016-08-15 | ||
JP2016159324A JP6710126B2 (en) | 2015-12-25 | 2016-08-15 | Absorbent article |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3172505U (en) * | 2005-10-26 | 2011-12-22 | ザ プロクター アンド ギャンブル カンパニー | Hygiene articles with inks that increase the hydrophobicity of certain areas |
JP2012210503A (en) * | 2012-08-07 | 2012-11-01 | Daio Paper Corp | Absorbent article |
JP2013208320A (en) * | 2012-03-30 | 2013-10-10 | Unicharm Corp | Absorbent article |
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2016
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3172505U (en) * | 2005-10-26 | 2011-12-22 | ザ プロクター アンド ギャンブル カンパニー | Hygiene articles with inks that increase the hydrophobicity of certain areas |
JP2013208320A (en) * | 2012-03-30 | 2013-10-10 | Unicharm Corp | Absorbent article |
JP2012210503A (en) * | 2012-08-07 | 2012-11-01 | Daio Paper Corp | Absorbent article |
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