WO2019208178A1 - Couche jetable de type culotte - Google Patents

Couche jetable de type culotte Download PDF

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Publication number
WO2019208178A1
WO2019208178A1 PCT/JP2019/015229 JP2019015229W WO2019208178A1 WO 2019208178 A1 WO2019208178 A1 WO 2019208178A1 JP 2019015229 W JP2019015229 W JP 2019015229W WO 2019208178 A1 WO2019208178 A1 WO 2019208178A1
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WO
WIPO (PCT)
Prior art keywords
extension
disposable diaper
pants
type disposable
color
Prior art date
Application number
PCT/JP2019/015229
Other languages
English (en)
Japanese (ja)
Inventor
亮太 蔵前
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN201980025757.7A priority Critical patent/CN111971012B/zh
Priority to RU2020137559A priority patent/RU2750795C1/ru
Publication of WO2019208178A1 publication Critical patent/WO2019208178A1/fr

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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
    • A61F13/551—Packaging before or after use

Definitions

  • the present invention relates to a pants-type disposable diaper provided with a disposal tape.
  • a diaper having a disposal tape that can keep the diaper rolled up is known.
  • a post-processing tape is fixed at the best time, and the post-processing tape has a colored tab portion on the side of the adhesive layer at the tip of the tape fastener base material of the fastening portion.
  • a pants-type diaper is described in which the presence of the tab portion is visible through the tape fastener base material.
  • Patent Document 2 also includes adjacent first and second tape tab elements and a plastically deformable stretchable film having an intermediate portion between two ends, and one end of the film is A laminated disposable tape tab is described wherein the first surface of the first tape tab element has the other end of the film bonded to the first surface of the second tape tab. Further, Patent Document 2 describes that a stretchable film is colored so that a visual indication of a degree of plastic deformation can be provided, and a design is applied to a portion covering the film. It is also described that this can avoid overstretching.
  • the present invention has a waist opening and a pair of leg openings, and in the worn state, the abdomen disposed on the abdomen side of the wearer, the crotch part disposed on the crotch part, and the dorsal side disposed on the dorsal side
  • This is a pants-type disposable diaper having a section.
  • a disposal tape is provided on the outer surface of the disposable diaper. In the disposal tape, a fixed portion fixed to the outer surface of the disposable diaper, an extension portion, and a fastening portion are connected in this order along the longitudinal direction of the disposal tape. It is in a tri-fold state that is stacked in order.
  • the disposal tape is detachably joined between the fastening portion and the extension portion, and is also detachably joined between the extension portion and the fixing portion.
  • the extending portion can be extended in the longitudinal direction of the disposal tape in a developed state where the tri-fold state is released.
  • the extension portion is configured to change in color after starting extension and before breaking.
  • FIG. 1 is a perspective view showing an embodiment of a pants-type disposable diaper of the present invention.
  • FIG. 2 is a developed plan view schematically showing the skin facing surface side in the developed and extended state of the pants-type disposable diaper shown in FIG. 1.
  • FIG. 3 is a perspective view showing a disposal form of the pants-type disposable diaper shown in FIG. 1.
  • FIG. 4 is a cross-sectional view showing the structure of a disposal tape provided in the pants-type disposable diaper shown in FIG.
  • FIG. 5 is a perspective view showing a state in which the disposal tape for the pants-type disposable diaper shown in FIG. 1 is extended.
  • FIGS. 6A and 6B are schematic views showing an example of a mode in which a color change is generated in the elongated portion according to the present invention.
  • FIGS. 7A and 7B are views corresponding to FIG. 6 showing another aspect.
  • FIGS. 8A and 8B are views corresponding to FIG. 6 showing still another embodiment.
  • FIG. 9 is a perspective view showing an arrangement
  • a waste tape having an extendable portion can be easily wound around a diaper that has been wound up, but may break if it is excessively extended. For this reason, an operator who uses a disposal tape to change the diaper into a disposal form sometimes uses the disposal tape without sufficiently extending it because of fear that the disposal tape will break. Further, in the process of extending the disposal tape, the disposal tape may be excessively extended to the extent that the breakage occurs.
  • Patent Document 1 does not describe any extension of the disposal tape.
  • Patent Document 2 it is not assumed that the tape tab is extended long enough to be wound around the outer periphery of the wound diaper. That is, even if the extensible part is colored as described in Patent Document 2 or the part covering the extensible part is designed, when the extensible part is elongated, It is difficult to reliably grasp the amount of expansion, and the tape tab may be excessively expanded.
  • the present invention relates to a pants-type disposable diaper that can eliminate the disadvantages of the above-described conventional technology.
  • FIG. 1 shows an embodiment of a pants-type disposable diaper according to the present invention.
  • a pants-type disposable diaper 1 (hereinafter, also simply referred to as “diaper 1”) shown in FIG. 1 is a type of worn article that is used by being worn on the lower abdomen of a wearer.
  • the diaper 1 is a pants-type disposable diaper having a waist opening 1W through which the wearer's torso is passed and a pair of leg openings 1L, 1L through which the wearer's lower limb is passed.
  • the diaper 1 includes a top sheet, a back sheet, an absorbent main body 4, and an exterior body 5 disposed on the non-skin facing surface side of the absorbent main body 4.
  • the exterior body 5 forms the non-skin facing surface of the diaper 1, that is, the outer surface of the diaper 1.
  • the “skin-facing surface” is a surface of the diaper 1 that is an absorbent article or a component thereof (for example, the surface sheet 2) that is directed toward the wearer's skin when worn, that is, relatively wearer's skin. It is the side close to the skin, and the “non-skin facing surface” is a surface of the diaper 1 or a component thereof directed to the side opposite to the skin side (clothing side) when worn, that is, relatively far from the wearer's skin. On the side.
  • “at the time of wear” here means the state by which the normal appropriate wearing position, ie, the correct wearing position of the said diaper 1, was maintained.
  • the diaper 1 includes an abdominal side A disposed on the wearer's abdomen in a worn state, a crotch C disposed on the crotch, and a back side B disposed on the back of the wearer.
  • both side edges along the longitudinal direction X of the exterior body 5 in each of the abdominal side A and the back side B are joined to each other by known joining means such as an adhesive, heat seal, ultrasonic seal and the like. Yes.
  • the above-mentioned waist opening 1W and a pair of leg openings 1L and 1L are formed.
  • FIG. 2 shows the diaper 1 in the expanded and extended state.
  • the “deployed and extended state” of the diaper 1 is defined as an unfolded state separated from a state in which both side edges along the longitudinal direction X of the exterior body 5 of the abdominal part A and the dorsal side part B are joined.
  • the diaper 1 is a state in which the elastic member of each part is extended to the design dimension (same as the dimension when the diaper 1 is flattened in a state where the influence of the elastic member is completely eliminated).
  • the diaper 1 has a longitudinal direction X corresponding to a direction extending from the ventral side A to the back side B through the crotch C, and the diaper 1 in a state where the diaper 1 is spread in a plane as shown in FIG. It has a horizontal direction Y orthogonal to the direction X.
  • the longitudinal direction X coincides with the longitudinal direction of the absorbent main body 4.
  • the diaper 1 is formed symmetrically with respect to a longitudinal center line CL that extends in the longitudinal direction X and bisects the diaper 1 in the transverse direction Y.
  • the absorbent main body 4 in the diaper 1 has a surface sheet 2 on the skin facing surface side and a back sheet 3 on the non-skin facing surface side, and has an absorbent body 40 between these two sheets 2 and 3.
  • the absorbent body 40 is located on the entire surface of the crotch part C, and the top sheet 2, the back sheet 3, and the absorbent body 40, and at least the ventral part A and the back part B along the longitudinal direction X from the crotch part C. It extends to a part.
  • the absorbent body 40 includes a liquid-retaining absorbent core 41 and a core wrap sheet 42 that covers the absorbent core 41, but the absorbent body 40 does not include a core wrap sheet. Not necessary.
  • the diaper 1 includes leak-proof cuffs 6 and 6 extending along the longitudinal direction X on both sides of the absorbent main body 4 along the longitudinal direction X.
  • the leak-proof cuffs 6 and 6 include a water-repellent cuff forming sheet 61 continuous over the entire length of the absorbent body 4 in the longitudinal direction X, and the longitudinal direction X on the inner side of the lateral direction Y of the cuff forming sheet 61. And one or a plurality of cuff elastic members 62 fixed in an expanded state.
  • the leak-proof cuffs 6 and 6 are fixed to the surface sheet via a cuff fixing portion (not shown) extending in the vertical direction X.
  • the leak-proof cuffs 6 and 6 stand on the skin facing surface side by having the cuff elastic member 62.
  • the constituent members of the diaper 1 such as the exterior body 5, the topsheet 2, the backsheet 3 and the absorber 40 included in the absorbent main body 4, and the leakproof cuffs 6 and 6,
  • the same ones that have been used can be used without particular limitation.
  • a disposal tape 10 is provided on the back side B of the diaper 1.
  • the disposal tape 10 is used for maintaining the disposal form of the diaper 1.
  • the disposal tape 10 is located at a substantially central portion in the lateral direction Y in the back side portion B of the diaper 1.
  • the disposal tape 10 is provided such that the longitudinal direction thereof coincides with the longitudinal direction X of the diaper 1.
  • FIG. 3 shows a disposal form of the diaper 1 when it is discarded.
  • the diaper 1 is rolled up from the crotch part C toward the waist opening 1W so that the abdomen A is inward in the diaper 1 shown in FIG. make.
  • the disposal tape 10 provided on the back side B is exposed to the outside of the rolled up diaper 1.
  • the disposal tape 10 is stretched in the longitudinal direction of the tape 10, and then wound around the outer periphery of the diaper 1 that has been disposed in a disposal form, thereby maintaining the diaper 1 in the disposal form.
  • the disposal tape 10 is mainly composed of three parts. Specifically, the disposal tape 10 includes a fixing part 12, an extension part 15, and a fastening part 18. These three parts are arranged in this order along the longitudinal direction X1 of the disposal tape 10. Further, these three parts are in a three-fold state where they are stacked in this order.
  • FIG. 4 shows a cross-sectional structure of the disposal tape 10 in a tri-fold state. No other member is interposed between the fixed portion 12 and the extending portion 15, and both are connected directly. Similarly, no other member is interposed between the extending portion 15 and the fastening portion 18, and both are directly connected.
  • the fixing part 12 in the disposal tape 10 has a fixing part sheet piece 13.
  • fixed part has the 1st surface 13a and the 2nd surface 13b.
  • the fixing portion sheet piece 13 has a first surface 13a facing the extending portion 15 and a second surface 13b of the diaper 1 except for a folded portion 13 'described later. Opposite the outer surface.
  • the fixing part 12 has a fixing part adhesive part 14.
  • the fixing portion adhesive portion 14 is provided on the second surface 13 b of the fixing portion sheet piece 13.
  • the fixing part 12 is fixed to the outer surface of the back side part B in the diaper 1 by a fixing part adhesive part 14.
  • the disposal tape 10 is detachably fixed to the outer surface of the back side portion B of the diaper 1 through the fixing portion adhesive portion 14.
  • a known method for fixing the disposal tape 10 to the outer surface of the diaper a known method such as an adhesive such as a hot-melt adhesive or a fusion can be used.
  • the extending portion 15 of the disposal tape 10 is a portion that easily expands with a relatively weak tensile force when a tensile force is applied to the disposal tape 10 and increases the length of the disposal tape 10.
  • the extending portion 15 has an extending portion sheet piece 16.
  • the extension portion sheet piece 16 may have the same length as the fixing portion sheet piece 13 described above, or may have a different length. Further, the extension portion sheet piece 16 may have the same width as the fixing portion sheet piece 13 or may have a different width.
  • the extending portion sheet piece 16 has a first surface 16a and a second surface 16b.
  • the extension portion sheet piece 16 has a first surface 16a facing the fastening portion 18 and a second surface 16b fixed portion, except for a folded portion 16 'described later. 12 is opposed.
  • the extending portion 15 has an extending portion adhesive portion 17.
  • the extension portion adhesive portion 17 is provided on the second surface 16 b of the extension portion sheet piece 16.
  • the extension part adhesive part 17 joins the extension part 15 and the fixing part 12 in the three-folded state of the disposal tape 10 so as to be peelable. Therefore, it is preferable that the adhesive part 17 for extended parts is comprised from the low-adhesive adhesive.
  • the fixing part sheet piece 13 has a folded part 13 ′ in which one end of the disposal tape 10 in the longitudinal direction X ⁇ b> 1 is folded back to the extending part 15 side.
  • the folded portion 13 ′ is joined to one end of the extension portion sheet piece 16 in the extension portion 15 on the second surface 16 b side.
  • extension part 15 are connected directly.
  • a known method such as an adhesive such as a hot-melt adhesive or a fusion can be used.
  • the fastening portion 18 of the disposal tape 10 can be secured to an arbitrary position on the outer surface of the diaper 1.
  • the fastening portion 18 forms a tip region of the disposal tape 10 and has a fastening part sheet piece 19.
  • the fastening portion sheet piece 19 may have the same length as the fixing portion sheet piece 13 or the extension portion sheet piece 16 or may have a different length. Further, the fastening portion sheet piece 19 may have the same width as the fixing portion sheet piece 13 or the extension portion sheet piece 16 or may have a different width.
  • the sheet piece 19 for fastening part has the 1st surface 19a and the 2nd surface 19b.
  • the fastening part 18 has a fastening part adhesive part 20.
  • the adhesion part 20 for fastening parts is provided on the second surface 19b of the sheet piece 19 for fastening parts.
  • the adhesive part 20 for the fastening part is detachably joined between the fastening part 18 and the elongated part 15 in the disposal tape 10 in a tri-fold state, and the fastening part 18 is attached to the outer surface of the diaper 1. It is surely fixed at an arbitrary position. From this viewpoint, it is preferable that the degree of adhesiveness of the adhesive portion 20 for the fastening portion is determined.
  • the extension portion sheet piece 16 in the extension portion 15 described above has one end in the longitudinal direction X1 folded back toward the fastening portion 18 to form a folded portion 16 ′.
  • the folded portion 16 ′ is joined to one end of the fastening portion sheet piece 19 in the fastening portion 18 on the second surface 19 b side.
  • the extending portion 15 and the fastening portion 18 are directly connected to each other.
  • a known method such as an adhesive such as a hot melt adhesive or a fusion can be used.
  • a grip piece 21 is joined to the other end of the fastening portion sheet piece 19 in the fastening portion 18 on the second surface 19b side.
  • the knob piece 21 is a separate sheet piece from the fastening part sheet piece 19.
  • the disposal tape 10 composed of three parts is folded into three in a Z shape (see FIG. 4). Then, the disposal tape 10 is disposed so that the free end of the disposal tape 10 in a tri-fold state, that is, the attachment portion of the knob piece 21 in the fastening portion 18 faces the waist opening 1W side in the diaper 1. It is attached to the back side B of the diaper 1.
  • the disposal tape 10 When maintaining the diaper 1 in the rolled-up state, the disposal tape 10 is changed from the three-folded state to a developed state where the three-folded state is released.
  • the “expanded state in which the tri-fold state is released” means that the extended portion 15 and the fixing portion 12 of the disposal tape 10 are peeled off and the extended portion 15 and the fastening portion 18 are peeled off. In other words, it means a state in which the three-folded disposal tape 10 is expanded linearly.
  • the “deployed state with the tri-fold state released” is also simply referred to as “deployed state”.
  • the disposal tape 10 In the unfolded state, the disposal tape 10 has a fastening portion 18 at one end of the extending portion 15 and a fixing portion 12 at the other end of the extending portion 15.
  • the fixed portions 12 are arranged in a straight line.
  • the extending portion 15 can be extended in the longitudinal direction X1 of the disposal tape 10 in the unfolded state where the tri-fold state is released.
  • the disposal tape 10 In the deployed state, the disposal tape 10 can be stretched by human power.
  • the extension part 15 can be extended by grasping the fastening part 18 with a finger or the like and stretching it in the longitudinal direction X1 of the disposal tape 10 (see FIG. 5).
  • extension start of the extension part 15 means a point in time when the tensile strength shows the first maximum point in the process of extending the extension part 15 by the following [Method of extending the extension part].
  • At break of the part 15 means a point in time when the breaking strength is shown in the process of extending.
  • the process “after the start of extension and before breaking” of the extension part 15 is also referred to as “elongation process”, and unless otherwise specified, the extension part is extended by the following method.
  • the stretched portion is pulled at a speed of 300 mm / min, and the tensile strength (N) that changes with the tensile distance in the stretching process is measured.
  • N the tensile strength
  • the point in time when the first maximum point of tensile strength is indicated is the “extension start” time of the extension part.
  • the first maximum point is the maximum point that first appears in the measured tensile strength (N) curve.
  • the maximum load at the time of elongation between 30% and 70% elongation is regarded as the first maximum point strength.
  • the maximum value of the tensile strength that changes with the tensile distance is defined as the breaking strength, the point in time at which the breaking strength is indicated is “at the time of breaking”, and the elongation at break is “100% elongation”.
  • the diaper 1 is configured such that the extension part 15 undergoes a color change during the extension process. That is, the extension portion 15 is configured such that the color before the start of extension and the color from the start of extension to the break are different.
  • the diaper 1 is formed by an operator who puts the diaper 1 in a disposal form such as a guardian or caregiver of an infant by holding the fastening portion 18 with a finger or the like and pulling the disposal tape 10 in the longitudinal direction X1.
  • the extending portion 15 can be extended and can be easily wound around the diaper 1. In the case where a conventional disposal tape in which the extending portion 15 is configured to be extendable is used, the extending portion 15 may be excessively extended to cause breakage, and the disposal form may not be maintained.
  • the diaper 1 since a color change occurs in the extension part 15 when the extension part 15 extends to some extent in the process from the start of extension to breakage, for example, extension When the color change occurs in the portion 15, by giving the information to the operator that the worker should not be further extended, the operator can excessively extend the extended portion 15 to break the extended portion. Can be prevented. Thereby, the operator can fully extend the disposal tape without excessively extending the extending portion 15 and without fear of breaking. Therefore, it is excellent in workability to easily wind the disposal tape around the rolled up diaper.
  • “Information that makes the worker recognize that it should not be extended any more” is, for example, a sentence “Please do not extend any more if the color changes”, and it may be a sentence, a symbol, a combination of them, etc.
  • such information is displayed on, for example, a diaper component, a diaper package, an advertisement about a diaper, or a homepage.
  • the color change of the extending portion 15 satisfies the following condition (1) or the following condition (2).
  • Condition (1) The difference in haze value (JIS K7105) between the extension part 15 before starting extension and the extension part 15 in the extension process is 20 or more.
  • Condition (2) The color difference ( ⁇ E * value) between the expansion unit 15 before starting expansion and the expansion unit 15 in the expansion process is 5 or more.
  • the haze value of the condition (1) is measured by the following method.
  • the haze value is measured according to JIS K7105 using a commercially available haze meter, for example, model NDH5000 manufactured by Nippon Denshoku Industries Co., Ltd., and is calculated by the following formula (1).
  • H (Td / Tt) ⁇ 100 (2)
  • H is the haze value (%)
  • Td is the diffuse transmittance (%)
  • Tt is the total light transmittance (%).
  • the measurement is performed so that the measurement position before the start of extension overlaps the measurement position in the extension process.
  • the measurement is performed 10 times, and the average is taken as the measurement value.
  • the haze value is an index indicating the degree of transparency, but is used as one of the indexes indicating the magnitude of color change in the present invention.
  • the color difference ( ⁇ E * value) under condition (2) is measured by the following method.
  • a simple spectral color difference meter NF333 (trade name) manufactured by Nippon Denshoku Industries Co., Ltd. can be used.
  • L * indicates the brightness
  • a * , b * indicate the color direction
  • a * indicates the substantially red direction
  • ⁇ a * Indicates a substantially green direction
  • b * indicates a substantially yellow direction
  • -b * indicates a substantially blue direction.
  • ⁇ E * is a value obtained by the following equation (2).
  • ⁇ E * [( ⁇ L * ) 2 + ( ⁇ a * ) 2 + ( ⁇ b * ) 2 ] 1/2 (2)
  • ⁇ L * , ⁇ a * , and ⁇ b * are differences in L * value, a * value, and b * value between two colors, respectively.
  • a ND110 sensor of ⁇ 4 mm is attached in a stapler type, an O-ring (small) is used at the tip of the sensor, a light source C / 2, and a viewing angle of 2 °.
  • Measure with The measurement is carried out by placing the disposal tape on the white paper so that the surface of the extension portion viewed from the operator when the unstretched disposal tape is stretched, and the surface of the viewing side
  • the sensor is brought into contact with the tip of the sensor and pressed so that no gap is formed between the extension and the tip of the sensor.
  • White paper waste tape is placed is L * a * b * L * values in the color system is 90 ⁇ 100, a * value is -1 to + 1, b * value is -1 to + 1.
  • the measurement is performed so that the measurement position before the start of extension overlaps the measurement position in the extension process.
  • stretching part 15 when the extending
  • the color change in the extension portion may satisfy both conditions of haze value and color difference ( ⁇ E * value).
  • the extension unit 15 is configured such that a color change occurs in the extension unit 15 before the start of extension and during the extension process.
  • a structure for causing a color change preferably a structure for causing a color change after being stretched to some extent, a method using a material that changes color as a member constituting the stretched portion (hereinafter referred to as “ And a method using a member whose color is changed by secondary processing (hereinafter referred to as “secondary processing method”).
  • a material whose color changes due to elongation for example, a polyester material in which fluorescent dyes having different emission colors in an aggregated state and a dispersed state are kneaded into a polyester resin can be mentioned.
  • the fluorescent dye is in an agglomerated state before the start of extension, but the color of the fluorescent dye is different before the start of extension and in the extension process because the fluorescent dye is in a dispersed state along with the extension.
  • the material include a sheet in which colloidal photonic crystals are dispersed in an elastomeric elastic resin.
  • the refractive index or the lattice spacing of the colloid photonic crystal is modulated in accordance with the elongation, so that the color of the sheet is different before the initiation of stretching and during the stretching process.
  • the material include an extensible sheet coated with a microencapsulated color former and a developer. When the sheet is stretched and pressure is applied, the microcapsules are broken, and the color former and the developer released from the microcapsules react to develop a predetermined color.
  • the secondary processing method it is preferable to use a member colored with a pattern in which the arrangement and area ratio of colored portions having coloring change with elongation. Examples of such patterns are shown in FIGS. Moreover, the area ratio of a colored part is a ratio of the area of the colored part per unit area (1 mm 2 ).
  • the patterns shown in FIGS. 6A and 6B are patterns in which the color of the colored portion in the extension process becomes darker than before extension. In the patterns shown in FIGS. 6A and 6B, the colored portion extends in the longitudinal direction X1, and the colored portion and the uncolored non-colored portion alternate in the width direction Y1 orthogonal to the longitudinal direction X1. Are arranged side by side.
  • the colored part shown to Fig.6 (a) is extended continuously in the longitudinal direction X1
  • the colored part shown in FIG.6 (b) is extended intermittently to the longitudinal direction X1.
  • the extension portion 15 extends in the longitudinal direction X1, so that the length in the width direction Y1 is reduced. Thereby, it becomes the arrangement
  • the patterns shown in FIGS. 7A and 7B are patterns in which the color of the colored portion in the extension process becomes lighter than before the extension.
  • the pattern shown in FIG. 7A has a colored portion having a certain size.
  • the colored portions and the uncolored non-colored portions are arranged alternately in the width direction Y1.
  • the coloring portion is extended along with the extension of the extension portion 15, so that the color of the coloring portion is perceived lighter than before the extension.
  • the non-colored portion is extended by the extension, so that the area ratio of the colored portion is lower than that before the extension. As a result, the color of the colored portion is perceived as lighter than before the extension.
  • the patterns shown in FIGS. 8A and 8B are patterns in which a figure or a symbol can be perceived along with expansion, and the color of the colored portion in the expansion process changes.
  • the color of the colored portion may be lightened or darkened.
  • a figure that has been compressed and cannot be perceived before being decompressed can be perceived as a predetermined shape by being enlarged by the decompression.
  • a symbol that has been compressed and cannot be recognized before expansion can be recognized as a predetermined symbol by being expanded by expansion.
  • the color change of the colored portion can be confirmed by the color difference ( ⁇ E * value).
  • Patterns colored by the secondary processing method include a pattern in which the colored portion becomes darker in the extension process than before the above-described extension, a pattern in which the colored portion becomes lighter in the extension process than before the extension, and extension. Accordingly, any one of the patterns in which the figure or the symbol can be perceived and the color of the colored portion changes may be used, or two or more of these patterns may be combined.
  • the extension unit 15 has a haze value difference of preferably 20 or more, more preferably 30 or more, and preferably 90 or less, more preferably before and after the extension process. Preferably it is 80 or less, Preferably it is 20 or more and 90 or less, More preferably, it is 30 or more and 80 or less. From the same viewpoint as described above, the extension portion 15 has a color difference ( ⁇ E * value) between before and after extension, preferably 5 or more, more preferably 10 or more, and preferably 80 or less, more preferably 50. Or less, preferably 5 or more and 80 or less, more preferably 10 or more and 50 or less.
  • the decompression unit 15 only needs to change the color in the decompression process with respect to the color before decompression, and the timing at which the color change occurs is not particularly limited.
  • the extension unit 15 may change in color when a predetermined tensile strength is reached, or may change in color when a predetermined extension length is reached. Further, the extension unit 15 may change to a plurality of colors. For example, the color may change in multiple stages depending on the tensile strength and the extension length.
  • the extension portion 15 preferably has a tensile strength equal to the breaking strength Pe of the extension portion 15 when the extension portion 15 is extended by the above-mentioned [Method of extending the extension portion]. The color change occurs until 70%, more preferably 60% is reached. In this case, the extension part 15 has already changed its color when the tensile strength reaches the value.
  • the tensile strength Pb at which the color change of the extension part 15 occurs is the tensile strength Pa at which the extension part 15 starts to extend. It is preferable that the strength is not less than the intermediate strength with the breaking strength Pe of the elongated portion 15.
  • the intermediate strength is a strength that is 1 ⁇ 2 of the sum of the value of the tensile strength Pa at which the stretched portion 15 starts to stretch and the value of the breaking strength Pe of the stretched portion 15.
  • the tensile strength Pa at which the extended portion 15 starts to be extended and the breaking strength Pe of the extended portion 15 are measured by the above-described [Method of Extending Extended Part].
  • the tensile strength Pb at which the color change of the extended portion 15 occurs is the tensile strength at the time when the color change of the extended portion occurs in the extension process of [Method of extending the extended portion] described above.
  • the time when the color change of the expansion part occurs is the time when the difference in haze value (JIS K7105) between the expansion part 15 before the expansion start and the expansion part 15 in the expansion process becomes 20, or the expansion part before the expansion start 15 and the color difference ( ⁇ E * value) between the expansion unit 15 in the expansion process is 5.
  • the tensile strength Pa at which the stretched portion 15 starts to stretch is preferably 1.0 N or more, more preferably 3.0 N or more. It is preferably 6.5N or less, more preferably 5.0N or less, and preferably 1.0N or more and 6.5N or less, more preferably 3.0N or more and 5.0N or less. From the viewpoint of sufficiently stretching the disposal tape 10 to an operator and further suppressing breakage due to excessive stretching, the stretched portion 15 has a tensile strength when stretched by the above-described [Method of stretching the stretched portion]. It is preferred that a color change occurs before the value reaches 13N.
  • the tensile strength Pb at which the color change of the elongated portion 15 occurs is preferably 8N or more, more preferably 12N or more, preferably 18N or less, more preferably 15N or less, and preferably Is 8N or more and 18N or less, more preferably 12N or more and 15N or less.
  • the breaking strength Pe of the elongated portion 15 is preferably 20N or more, more preferably 25N or more, and preferably 50N or less, more preferably 45N or less, and preferably 20N or more and 50N or less, more preferably 25N or more and 45N or less.
  • the extending portion 15 is preferably 150 mm or more, more preferably 200 mm or more, and even more preferably 250 mm or more.
  • This extendable length is the maximum length by which the extension 15 can be extended.
  • the extension length of the extension part 15 including the maximum length is a length including the joining region with the fixing part or the fastening part at both ends of the extension part, and will be described later. It is measured by the measuring method of changing extension length]. Further, from the viewpoint of notifying the operator that it has been sufficiently extended and further suppressing excessive extension, when the extension part 15 can be extended to 150 mm or more, the extension part 15 has an extension length of 120 mm. It is preferred that a color change has occurred before reaching.
  • the extension length at which the color of the extension portion changes is preferably 120 mm or more, more preferably 150 mm or more. More preferably, it is 180 mm or more.
  • extension length of the extension part 15 and the extension length at which the color changes are measured by the following method.
  • extension part is peeled from a fixing
  • the longitudinal direction of the disposal tape is aligned with the tensile direction, and the end of the chuck of the tensile tester (for example, model “AUTOGRAPH AG-X” manufactured by Shimadzu Corporation) is the extension part and the fixed part or the fastening part. Attach so that it is located at the joint.
  • the film is pulled at a speed of 300 mm / min, and the tensile strength that changes with the tensile distance is measured.
  • the point in time when the first maximum point of tensile strength is indicated is the “extension start” time of the extension part.
  • the maximum load at the time of elongation between 30% and 70% elongation is regarded as the first maximum point strength.
  • the maximum value of the tensile strength that changes with the tensile distance is defined as the breaking strength
  • the point in time at which the breaking strength is indicated is “at the time of breaking”
  • the elongation at break is “100% elongation”. .
  • the length of the stretched part in the process of stretching the stretched part by this method is defined as the stretched length. Further, in the above process, the total of the tensile distance at the time when the color of the extension 15 changes and the length of the extension 15 before extension is defined as the extension length at which the color of the extension 15 changes. That is, this is the total length of the extension 15 at the time when the color change of the extension 15 occurs in this measurement method.
  • the time when the color change of the expansion part occurs is the time when the difference in the haze value (JIS K7105) between the expansion part 15 before the expansion start and the expansion part 15 expanded by this measurement method becomes 20, or the expansion start This is a point in time when the color difference ( ⁇ E * value) between the previous expansion unit 15 and the expansion unit 15 expanded by this measurement method becomes 5.
  • the extension process of the extension unit 15 is divided into a first stage that extends to 2/3 of the maximum length from the start of extension and a second stage that extends from 2/3 of the maximum length to the maximum length In this case, it is preferable that the second stage has a larger amount of color change than the first stage. That is, it is preferable that the color difference between before the extension and the second stage is larger than the color difference between before the extension and the first stage.
  • the “color change amount” is a difference between two haze values or a color difference ( ⁇ E * value) of two objects to be compared.
  • the first stage and the second stage are defined by the extension length of the extension part that has been extended by the above-mentioned [Method for measuring extension length at which the color of the extension part changes].
  • the difference in haze value between before the extension and the second stage is H2
  • the haze between before the extension and the first stage is H1
  • H2 is preferably larger than H1.
  • the difference between H2 and H1 is preferably 10 or more, more preferably 15 or more, preferably 90 or less, more preferably 80 or less, and preferably 10 or more and 90 or less, more preferably. Is 15 or more and 80 or less.
  • the difference between C2 and C1 is preferably 3 or more, more preferably 5 or more, preferably 80 or less, more preferably 50 or less, and preferably 3 or more and 80 or less, more preferably Is 5 or more and 50 or less.
  • the color change amount is preferably such that one of the difference in haze value and the color difference ( ⁇ E * value) is within the above range.
  • the extension unit 15 does not cause a color change in the first stage. In other words, it is preferable that the extension unit 15 does not change in color until the extension unit 15 extends to 2/3 of the maximum length from the start of extension.
  • the color does not change means that both the haze value and the color difference ( ⁇ E * value) in the conditions (1) and (2) are less than the predetermined value described above.
  • the maximum length in the extension process that is, the maximum length at which the extension 15 can be extended is the maximum value of the tensile strength, that is, the breaking strength in the above-mentioned [Method for measuring extension length in which the color of the extension changes]. It is the full length of the extension part 15 at the time. For example, when the maximum length of the extension part 15 is 150 mm in the extension process in [Method for measuring extension length in which the color of the extension part changes] described above, there is a stage in which the extension part 15 extends from the start of extension to 100 mm. The second stage is the first stage and the stage extending from 100 mm to 150 mm.
  • the extending part 15 is preferably 4 times or more, more preferably 5 times or more, more preferably the length before the extension. Can be extended to a length of 6 times or more, preferably 12 times or less, more preferably 10 times or less, still more preferably 8 times or less, and preferably 4 times or more to 12 times. In the following, it can be extended to a length of 5 to 10 times, more preferably 6 to 8 times.
  • the stretchable length of the stretched portion 15 is the total length of the stretched portion 15 at the time when the breaking strength measured by the above-described [Method for measuring stretched length at which the color of the stretched portion changes] is shown.
  • the extension length at which the color of the extension part changes is extended.
  • the length is preferably twice or more of the previous length, and more preferably three or more times.
  • the extension part 15 when the extension part 15 can be extended to 4 times or more of the length before extension, when the extension part 15 is extended by the above-mentioned [Method for measuring extension length in which the color of the extension part changes]
  • the extension process of the extension part 15 is changed from a start of extension to a length of 3 times the length before the extension and a length of 3 times the length before the extension to a length of 3 times the length before the extension.
  • the four-fold stretching stage When divided into four-fold stretching stages, the four-fold stretching stage preferably has a larger color change amount than the three-fold stretching stage. That is, it is preferable that the color difference between the 3-fold stretching stage and the 4-fold stretching stage is larger than the color difference between before the stretching and the 3-fold stretching stage.
  • the 3-fold extension step and the 4-fold extension step are defined by the extension length of the extension portion that has been extended by the above-described [Method for measuring extension length in which the color of the extension portion changes].
  • the difference in haze value in the 4-fold expansion stage is H4
  • the difference in haze value in the 3-fold expansion stage is H3.
  • H4 is preferably larger than H3.
  • the difference between H4 and H3 is preferably 10 or more, more preferably 15 or more, preferably 90 or less, more preferably 80 or less, and preferably 10 or more and 90 or less, more preferably. Is 15 or more and 80 or less.
  • elongation before and 3 times extension step C4 is preferably larger than C3, where C3 is the color difference ( ⁇ E * value) from
  • the difference between C4 and C3 is preferably 3 or more, more preferably 5 or more, and preferably 80 or less, more preferably 50 or less, and preferably 3 or more and 80 or less, more preferably Is 5 or more and 50 or less.
  • the color change amount is preferably such that one of the difference in haze value and the color difference ( ⁇ E * value) is within the above range. Further, from the same viewpoint as described above, it is preferable that no color change occurs in the three-fold expansion stage.
  • the disposal tape 10 is wound around the outer surface of the rolled up diaper 1.
  • the difference in color between the expansion unit 15 in which the color change has occurred and the outer surface of the diaper 1 is the expansion unit 15 and the diaper 1 before the color change has occurred. It is preferable that the color difference with the outer surface is greater.
  • the color of the extending portion 15 is compared with the color of the central portion in the lateral direction Y of the outer surface of the diaper 1. From the same viewpoint as described above, it is preferable that the elongated portion 15 before the color change occurs is the same or similar in color to the vicinity of the fixing portion 12 on the outer surface of the diaper 1, and the fixing portion 12 on the outer surface of the diaper 1.
  • the color is the same or similar to the portions located on both sides in the width direction Y1.
  • the vicinity of the fixing portion 12 on the outer surface is a peripheral area of a portion joined to the fixing portion 12 via the fixing portion adhesive portion 14 on the outer surface.
  • the elongated portion 15 where the color change has occurred is the same as or similar to the color of the fixing portion 12, the fastening portion 18, or the knob 21.
  • the color is the same or similar, the difference between the two haze values is less than 20, or the color difference between the two is less than 5.0.
  • the tensile strength Pa at which the extension part 15 starts to extend is the peeling strength Pg between the diaper 1 and the fixing part 12. Lower is preferred. From the viewpoint of more surely achieving the above effect, the ratio (Pg / Pa) of the peel strength Pg between the diaper 1 and the fixed portion 12 to the tensile strength Pa at which the elongated portion 15 starts to stretch is preferably 3 or more. , More preferably 4 or more, preferably 8 or less, more preferably 7 or less, and preferably 3 or more and 8 or less, more preferably 4 or more and 7 or less.
  • the tensile strength Pa at which the stretched portion 15 starts to stretch is measured by the above-described [Method of stretching the stretched portion].
  • the peel strength Pg between the diaper 1 and the fixing part 12 is measured by the following method.
  • Measurement method of peel strength between diaper and fixed part About the disposal tape of the trifold state in a diaper, it is made the unfolded state which canceled the trifold state. Next, the longitudinal direction of the disposal tape is aligned with the tensile direction, and the sheet that forms the fixed part and the outer surface of the diaper is attached to a Tensilon tensile tester (for example, model “AUTOGRAPH AG-X” manufactured by Shimadzu Corporation). Install between chucks.
  • the diaper 1 has a high-rigidity region in which the absorbent core 41 exists on the inner side in the thickness direction, and a low-rigidity region that is less rigid than the high-rigidity region. Moreover, as for the diaper 1, the waist gathers WG and the leg gather LG are formed in the peripheral area of this diaper 1 (refer FIG. 1).
  • the peripheral region refers to a region on the waist end side of the absorber 40.
  • the waist gathers WG and leg gathers LG are often formed in a low rigidity region from the viewpoint of improving the stretchability.
  • the entire fixing portion 12 is disposed in the high rigidity region located inside the low rigidity region. It is preferable. In this case, the entire fixing portion 12 may be disposed in the high rigidity region. “Inside the low-rigidity region” means being located inward in both the vertical direction X and the horizontal direction Y as compared with the low-rigidity region.
  • the disposal tape 10 is disposed in the high-rigidity region, for example, an aspect in which the inner side in the longitudinal direction of the fixing portion 12 overlaps the absorbent core 41 can be cited. Further, as shown in FIG. 9, the fixing portion 12 may be arranged so that the entire portion overlaps the absorbent core 41.
  • the diaper 1 includes the elastic member 62 that expands and contracts in the longitudinal direction X in the leak-proof cuff 6 in addition to the elastic member described above.
  • a portion that expands and contracts in a predetermined direction such as the vertical direction X or the horizontal direction Y by such an elastic member or the like is hereinafter also referred to as an expandable portion.
  • the outer surface of the diaper 1 may be formed with unevenness due to the stretchability of the stretchable part, and if a disposal tape is disposed on the site where such unevenness is formed, there is a risk of unintentional peeling. is there.
  • the fixing portion 12 is positioned so that the fixing portion 12 of the disposal tape 10 does not overlap the stretchable portion in plan view of the diaper 1.
  • the end portion 12a on the crotch C side of the fixed portion 12 is positioned closer to the opening end 50 side of the waist opening 1W than the stretchable portion that expands and contracts in the longitudinal direction X. (See FIG. 2).
  • the end portion 12a on the crotch C side of the fixing portion 12 is formed on the back side portion B of the elastic member 52 disposed along the end portion on the back side portion B side of the cuff elastic member 62 and the leg opening.
  • the length L10 between the crotch C side end portion 12a of the fixing portion 12 and the waist opening end 50 of the back side portion B is the distance between the cuff elastic member 62 and the waist opening end 50. It is shorter than the length L12 between them and the length L14 between the elastic member 52 arranged at the leg opening and the waist opening end 50 (see FIG. 2).
  • the length between the end portion 12a on the crotch C side of the fixing portion 12 and the waist opening end 50 of the back side portion B is set to L10.
  • the length between the cuff elastic member 62 and the waist opening end 50 is L12 (see FIG. 2)
  • the ratio of L12 to L10 is preferably 1. 05 or more, more preferably 1.1 or more, and preferably 2.0 or less, more preferably 1.75 or less, and preferably 1.05 or more and 2.0 or less, more preferably 1.1 or more. 1.75 or less.
  • the ratio of L14 to L10 Is preferably 1.1 or more, more preferably 1.2 or more, and preferably 2.5 or less, more preferably 2.2 or less, and preferably 1.1 or more and 2.5 or less, More preferably, it is 1.2 or more and 2.2 or less.
  • an appropriate material may be selected as the sheet piece 16 constituting the extension part 15.
  • an extensible film can be used as a constituent material of the sheet pieces 16.
  • Such films include, for example, single layer films and multilayer films such as coextruded films.
  • polyolefin such as linear low density polyethylene is preferable.
  • a resinous sheet made of a polyolefin-based, polyester-based, polyamide-based or polyurethane-based resin (including a combination of two or more types). , Films, etc.), non-woven fabrics, woven fabrics and the like that have been conventionally used can be used without particular limitation.
  • a resinous sheet made of a polyolefin-based, polyester-based, polyamide-based or polyurethane-based resin (including a combination of two or more types).
  • Films, etc.) non-woven fabrics, woven fabrics and the like that have been conventionally used can be used without particular limitation.
  • fixed part is extendable, in the part currently fixed to the outer surface of the diaper 1, the extensibility is a state which does not express.
  • a rubber-based adhesive portion 17 for joining the extending portion 15 and the fixing portion 12 so as to be peeled or an adhesive portion 20 for fastening portion joining the fastening portion 18 and the extending portion 15 so as to be peelable can be used.
  • a pressure-sensitive adhesive and an acrylic pressure-sensitive adhesive are generally used, and a rubber-based pressure-sensitive adhesive is preferably used.
  • the rubber-based pressure-sensitive adhesive include synthetic rubbers such as styrene-butadiene block copolymers and hydrogenated styrene-butadiene block copolymers, or blends of these synthetic rubbers and resins.
  • the extension portion adhesive portion 17 may be formed on the entire first surface 16 a of the extension portion sheet piece 16. Moreover, the adhesion part 20 for fastening parts may be formed in the whole surface of the 2nd surface 19b of the sheet piece 19 for fastening parts. These adhesion parts 17 and 20 may be formed intermittently, respectively. In this case, these adhesive parts 17 and 20 can be formed intermittently by applying the above-mentioned adhesive intermittently.
  • the disposal tape 10 provided on the outer surface of the diaper 1 includes a fixing portion sheet piece 13 on one end side of the extension portion sheet piece 16 and a fastening portion on the other end portion side of the extension portion sheet piece 16. It can manufacture by laminating
  • the fastening portion sheet piece is located inward in the longitudinal direction X1 from the other end portion of the extension portion sheet piece 16 so that the above-described extending portions E1 and E2 are formed. 19 may be laminated.
  • this invention is not restrict
  • the disposal tape 10 was provided in the back side part B of the diaper 1, the site
  • the disposal tape 10 was provided in the approximate center part in the horizontal direction Y of the diaper 1, the site
  • the disposal tape 10 was provided so that the longitudinal direction X1 might correspond with the longitudinal direction X of the diaper 1, the direction of the disposal tape 10 is not restricted to this, for example, a disposal tape 10 may be provided such that the longitudinal direction X1 thereof coincides with the lateral direction Y of the diaper 1.
  • the knob piece 21 was joined to the other end of the sheet
  • the pants-type wearing article of the present invention may be a pants-type sanitary napkin or the like in addition to a pants-type disposable diaper for infants or adults.
  • This invention discloses the following underpants type disposable diaper regarding embodiment mentioned above further. ⁇ 1> It has a waist opening and a pair of leg openings, and has a ventral side part disposed on the wearer's belly side in a worn state, a crotch part disposed on the crotch part, and a back side part disposed on the back side.
  • a pants-type disposable diaper A disposal tape is provided on the outer surface of the disposable diaper, In the disposal tape, a fixed portion fixed to the outer surface of the disposable diaper, an extension portion, and a fastening portion are connected in this order along the longitudinal direction of the disposal tape.
  • the disposal tape is detachably joined between the fastening portion and the extension portion, and is also detachably joined between the extension portion and the fixing portion.
  • the extending portion can be extended in the longitudinal direction of the disposal tape in a deployed state in which the tri-fold state is released,
  • the extension part is a pants-type disposable diaper in which a color change occurs after the extension starts and before it breaks.
  • the fastening portion has a fastening portion adhesive portion on a surface facing the elongated portion, and the fastening portion adhesive portion is in a tri-fold state, and the fastening portion in the disposal tape
  • the underpants type disposable diaper as described in said ⁇ 1> which has joined between the said expansion
  • ⁇ 3> The change in color of the extension part is described in ⁇ 1> or ⁇ 2>, in which a difference in haze value (JIS K7105) between the extension part before starting extension and the extension part in the extension process is 20 or more. Pants-type disposable diapers.
  • ⁇ 4> The stretched portion according to any one of the above ⁇ 3>, wherein a difference in haze value between the stretched part and the stretched process is 20 or more, preferably 35 or more, and 90 or less, preferably 80 or less.
  • the change in color of the extension part is the pants according to ⁇ 1> or ⁇ 2>, wherein a color difference ( ⁇ E * value) between the extension part before starting extension and the extension part in the extension process is 5 or more.
  • Type disposable diaper. ⁇ 6> The pants type according to ⁇ 5>, wherein the extension part has a color difference ( ⁇ E * value) between before extension and during the extension process of 5 or more, preferably 10 or more, and 80 or less, preferably 50 or less.
  • Disposable diapers ⁇ 7> The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 6>, wherein a material that changes color when stimulated by extension of the extension part is used as a member constituting the extension part.
  • a member according to any one of the above items ⁇ 1> to ⁇ 6>, wherein a member colored with a pattern in which an arrangement ratio or an area ratio of colored portions having coloring changes as the member extends is used as the member constituting the extending portion.
  • Pants-type disposable diaper ⁇ 9> The pant type according to any one of ⁇ 1> to ⁇ 8>, wherein the extension portion has the color change before the tensile strength reaches 70%, preferably 60% of the breaking strength of the extension portion.
  • Disposable diapers Any one of ⁇ 1> to ⁇ 9>, wherein a tensile strength Pb at which a color change of the elongated portion occurs is equal to or greater than an intermediate strength between a tensile strength at which the elongated portion starts to stretch and a breaking strength of the elongated portion.
  • the pants-type disposable diaper according to 1.
  • the tensile strength Pa at which the stretched portion starts to stretch is 6.5 N or less
  • ⁇ 12> ⁇ 1> to ⁇ 11>, wherein the tensile strength Pa at which the stretched portion starts to stretch is 1.0 N or more, preferably 3.0 N or more, and is 6.5 N or less, preferably 5.0 N or less.
  • a pants-type disposable diaper according to any one of the above.
  • ⁇ 13> The pants according to any one of ⁇ 1> to ⁇ 12>, wherein the tensile strength Pb at which the color of the elongated portion changes is 8N or more, preferably 12N or more, and 18N or less, preferably 15N or less.
  • ⁇ 14> The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 13>, wherein the breaking strength Pe of the elongated portion is 20 N or more, preferably 25 N or more, and 50 N or less, preferably 45 N or less.
  • the extension part can be extended to 150 mm or more, The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 15>, wherein the extension portion changes the color before the extension length reaches 120 mm.
  • the extension part can be extended to 150 mm or more;
  • an extension length at which the color of the extension part changes is 120 mm or more, preferably 150 mm or more, more preferably 180 mm or more.
  • ⁇ 18> When the extension process of the extension part is divided into a first stage that extends to 2/3 of the maximum length from the start of extension and a second stage that extends from 2/3 of the maximum length to the maximum length Furthermore, in the second stage, the pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 17>, wherein the color change amount is larger than that in the first stage.
  • the said extension part is a pants-type disposable diaper as described in said ⁇ 18> in which the said color change does not arise in the 1st step which expand
  • the amount of change in color of the stretched part is represented by a difference in haze value, the difference in haze value between before the stretching and the second stage is H2, and the difference in haze value between before stretching and the first stage is H1.
  • H2 is larger than the H1
  • a color change amount ( ⁇ E * value) is represented by a color difference ( ⁇ E * value), and a color difference ( ⁇ E * value) between the second stage and the second stage is C2, and a color difference ( ⁇ E * ) between the before stage and the first stage .
  • (Value) is C1, C2 is larger than C1,
  • the difference between C2 and C1 is 3 or more, preferably 5 or more, and 80 or less, preferably 50 or less, and 3 or more and 80 or less, preferably 5 or more and 50 or less, ⁇ 18> Or the underpants type disposable diaper as described in ⁇ 19>.
  • the extension part can be extended to a length of 4 times or more, preferably 5 times or more, more preferably 6 times or more of the length before extension, and 12 times or less, preferably 10 times or less, more preferably
  • the extension part can be extended to more than four times the length before extension, The pant according to any one of ⁇ 1> to ⁇ 22>, wherein an extension length at which the color of the extension part changes is at least twice as long as the length before extension, preferably at least three times the length before extension.
  • Type disposable diaper is
  • the extension part can be extended to a length that is at least four times the length before extension, The underpants-type disposable diaper according to any one of ⁇ 1> to ⁇ 23>, wherein an extension length at which the color of the extension part changes is three times or more a length before the extension.
  • the extension part can be extended to a length of 4 times or more of the length before extension, and the extension process of the extension part is extended to 3 times the length before extension from the start of extension. When divided into an extension stage and a 4-times extension stage that extends from 3 times the length before extension to 4 times the length, the 4-times extension stage is more effective than the 3 times extension stage.
  • the pants-type disposable diaper according to any one of the above items ⁇ 1> to ⁇ 24>, wherein the amount of change is large.
  • the extension part can be extended to a length of 4 times or more of the length before extension, and the extension process of the extension part is extended to 3 times the length before extension from the start of extension. When divided into an extension stage and a 4-times extension stage that extends from 3 times the length before extension to 4 times the length before the extension, the color change does not occur in the 3-times extension stage.
  • the pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 24>.
  • ⁇ 27> The pants-type disposable according to ⁇ 25> or ⁇ 26>, wherein the extension portion has a color difference between the pre-extension stage and the 4-fold extension stage greater than a color difference between the extension stage and the 3-fold extension stage. Diapers. ⁇ 28> ⁇ 1> to ⁇ 27>, wherein the color difference between the extended portion and the outer surface where the color change has occurred is greater than the color difference between the extended portion and the outer surface before the color change occurs.
  • a pants-type disposable diaper according to any one of the above. ⁇ 29> The underpants-type disposable diaper according to any one of ⁇ 1> to ⁇ 28>, wherein the elongated portion before the color change occurs is the same or similar in color to the vicinity of the fixing portion on the outer surface .
  • a knob piece is connected to the end of the fastening portion opposite to the side to which the extended portion is connected,
  • the extension portion where the color change has occurred is the same as or similar to the color of the fixing portion, the fastening portion, or the knob piece, according to any one of the above items ⁇ 1> to ⁇ 29>.
  • Pants-type disposable diaper is the same as or similar to the color of the fixing portion, the fastening portion, or the knob piece, according to any one of the above items ⁇ 1> to ⁇ 29>.
  • ⁇ 31> The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 30>, wherein the tensile strength Pa at which the elongated portion starts to stretch is lower than the peel strength Pg between the disposable diaper and the fixed portion.
  • the ratio (Pg / Pa) of the peel strength Pg between the disposable diaper and the fixed part to the tensile strength Pa at which the stretched part starts to stretch (Pg / Pa) is 3 or more, preferably 4 or more, and preferably 8 or less, preferably
  • the pants-type disposable according to any one of ⁇ 1> to ⁇ 32>, wherein the fixing portion is disposed in a high-rigidity region located inside a low-rigidity region located in a peripheral region of the disposable diaper. Diapers.
  • the disposable diaper comprises an absorbent core,
  • the disposable diaper expands and contracts in the vertical direction when the direction extending from the abdominal side part to the back side part through the crotch part is the vertical direction and the direction orthogonal to the vertical direction is the horizontal direction.
  • the disposal tape is provided on the back side portion, and an end portion on the crotch portion side of the fixing portion is positioned on an opening end side of the waist opening portion with respect to the stretchable portion in the longitudinal direction.
  • the pants-type disposable diaper according to any one of the above items ⁇ 1> to ⁇ 34>.
  • ⁇ 36> It has a surface sheet on the skin facing surface side and a back sheet on the non-skin facing surface side, and includes an absorbent main body having an absorbent body between both sheets, and both side portions of the absorbent main body along the longitudinal direction.
  • the leak-proof cuff is configured to include a cuff forming sheet and one or a plurality of cuff elastic members fixed in an elongated state in the longitudinal direction.
  • the length between the crotch lower end of the fixed portion and the open end of the waist opening of the back side is L10, and the length between the cuff elastic member and the open end is L12.
  • the ratio of L12 to L10 (L12 / L10) is 1.05 or more, preferably 1.1 or more, and 2.0 or less, preferably 1.75 or less. Pants-type disposable diapers as described.
  • the length between the crotch lower end of the fixed part and the opening end of the waist opening of the back side is L10, and the elastic member disposed in the leg opening and the waist opening
  • the ratio of L14 to L10 is 1.1 or more, preferably 1.2 or more, and 2.5 or less, preferably 2.
  • the pants-type disposable diaper according to ⁇ 35> or ⁇ 36> which is 2 or less.
  • the disposal tape can be stretched without excessively stretching the disposal tape.

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

Abstract

Une bande jetable (10) est fournie sur la surface externe d'une couche (1). Dans la bande jetable (10), une partie fixe (12), une partie d'extension (15) et une partie de fixation (18) sont agencées dans cet ordre le long de la direction longitudinale (X1) de la bande jetable (10), et sont empilées dans un état en trois couches dans cet ordre. Dans la bande jetable (10) dans l'état en trois couches, la partie de fixation (18) et la partie d'extension (15) sont reliées amovibles, et la partie d'extension (15) et la partie de fixation (12) sont également reliées amovibles. La partie d'extension (15) peut être étendue dans la direction longitudinale (X1) de la bande jetable dans un état déplié dans lequel l'état en trois couches est supprimé. La partie d'extension (15) est conçue pour changer de couleur après le début de l'extension et avant la rupture.
PCT/JP2019/015229 2018-04-24 2019-04-05 Couche jetable de type culotte WO2019208178A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980025757.7A CN111971012B (zh) 2018-04-24 2019-04-05 短裤型一次性尿布
RU2020137559A RU2750795C1 (ru) 2018-04-24 2019-04-05 Одноразовый подгузник типа трусов

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018082801A JP6762985B2 (ja) 2018-04-24 2018-04-24 パンツ型使い捨ておむつ
JP2018-082801 2018-04-24

Publications (1)

Publication Number Publication Date
WO2019208178A1 true WO2019208178A1 (fr) 2019-10-31

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US11957557B2 (en) 2018-04-24 2024-04-16 Kao Corporation Pants-type disposable diaper

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EP3666239A4 (fr) * 2017-08-08 2021-05-26 Kao Corporation Couche jetable de type culotte
US11957557B2 (en) 2018-04-24 2024-04-16 Kao Corporation Pants-type disposable diaper

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CN111971012A (zh) 2020-11-20
CN111971012B (zh) 2022-05-06
JP6762985B2 (ja) 2020-09-30
RU2750795C1 (ru) 2021-07-02

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