WO2022030211A1 - Article absorbant - Google Patents

Article absorbant Download PDF

Info

Publication number
WO2022030211A1
WO2022030211A1 PCT/JP2021/026576 JP2021026576W WO2022030211A1 WO 2022030211 A1 WO2022030211 A1 WO 2022030211A1 JP 2021026576 W JP2021026576 W JP 2021026576W WO 2022030211 A1 WO2022030211 A1 WO 2022030211A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent article
fastening member
article according
outer layer
contact area
Prior art date
Application number
PCT/JP2021/026576
Other languages
English (en)
Japanese (ja)
Inventor
貴史 白川
拓也 幸田
美奈 富田
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 CN202180058097.XA priority Critical patent/CN116096336A/zh
Publication of WO2022030211A1 publication Critical patent/WO2022030211A1/fr

Links

Images

Classifications

    • 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
    • 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
    • A61F13/56—Supporting or fastening means
    • 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
    • A61F13/56—Supporting or fastening means
    • A61F13/62—Mechanical fastening means, ; Fabric strip fastener elements, e.g. hook and loop

Definitions

  • the present invention relates to an absorbent article.
  • Patent Document 1 includes fastener tapes provided on both sides of the back body and target tapes provided on the outer surface of the front body and made of a thermoplastic resin, and the target tape is made of a bulky non-woven fabric.
  • a disposable diaper in which the target tape is heat-sealed in a predetermined pattern is described on a thermoplastic resin sheet constituting the outer surface of the diaper.
  • Patent Document 2 has a fastening tape partially or wholly formed of a male material of a hook-and-loop fastener, and a locking portion for locking the male material, and the hydrophobic sheet and the non-woven fabric are water-soluble hot. It is provided with a back surface sheet formed by thermal pressure bonding via an adhesive made of a melt resin, and the adhesive strength between the hydrophobic sheet and the non-woven fabric on the back surface sheet is at least a predetermined value, and the back surface sheet has predetermined physical characteristics.
  • a deployable absorbent article having the above is described.
  • the present invention has a vertical direction corresponding to the front-back direction of the wearer and a lateral direction orthogonal to the vertical direction, a crotch portion arranged in the crotch portion of the wearer, and an abdomen extending in the front-rear direction of the crotch portion. It has a side portion and a dorsal portion, and the fastening tape provided on both side edges of the dorsal portion along the vertical direction and the fastening tape provided on the non-skin facing surface of the ventral side portion.
  • the present invention relates to an absorbent article provided with a fastening member that can be fastened.
  • the outer layer sheet forming the non-skin facing surface on the ventral side preferably has a flat fiber-containing region in which flat fibers are present on at least the surface on the non-skin facing surface side.
  • the fastening member has a first surface to which the fastening tape is fastened and a second surface opposite to the first surface, and the second surface has a surface contact area larger than that of the first surface. It is preferable that the rate is high and the second surface is adhered to the flat fiber-containing region.
  • FIG. 1 is a perspective view showing a deployable disposable diaper according to an embodiment of the absorbent article of the present invention.
  • FIG. 2 is a development plan view schematically showing the skin facing surface side (inner surface side) of the diaper shown in FIG. 1 in the expanded and extended state.
  • FIG. 3 is a sectional view taken along line II-II of FIG.
  • FIG. 4 is an enlarged plan view in which the fastening member shown in FIG. 1 is partially peeled off.
  • the fastening member for fastening the fastening tape is generally provided on the outer surface of the absorbent article by using an adhesive.
  • the engaging force between the fastening tape and the fastening member must be high, and the fastening member must be firmly attached to the outer surface of the absorbent article. It is desirable that it is fixed.
  • the amount of the adhesive used is too large from the viewpoint of fixing the fastening member, the production cost increases, the texture of the outer surface of the absorbent article decreases, and the odor of the adhesive becomes strong. There was a risk of quality deterioration such as.
  • Patent Document 1 fixes the target tape by heat fusion instead of the adhesive, but both the fixing of the fastening member on the outer surface of the absorbent article and the texture of the absorbent article are compatible. There were not enough points to make it.
  • Patent Document 2 does not disclose a technique for fixing a fastening member to the outer surface of an absorbent article.
  • the present invention relates to an absorbent article in which the fastening member can be stably fixed to the outer surface of the absorbent article and the texture is also taken into consideration.
  • FIG. 1 to 4 show a deployable disposable diaper (hereinafter, also simply referred to as "diaper") which is an embodiment of the absorbent article of the present invention.
  • the diaper 1 shown in FIG. 2 corresponds to the front-back direction of the wearer in the deployed and extended state, and is orthogonal to the vertical direction X extending from the ventral side of the wearer to the dorsal side through the crotch portion and the vertical direction X. It has a lateral direction Y to be used.
  • the diaper 1 has a ventral portion A arranged on the ventral side of the wearer, a dorsal portion B arranged on the dorsal side, and a crotch portion C arranged on the crotch portion when the diaper 1 is worn. That is, the ventral portion A and the dorsal portion B extend in front of and behind the inseam C.
  • the ventral portion A, the inseam C, and the dorsal portion B are regions in which the diaper 1 is divided into three equal parts in the total length in the vertical direction X, and extends continuously in the front-back direction of the wearer. ..
  • the inseam C has an excretion portion facing portion (not shown) that is arranged to face the excretion portion of the wearer when the diaper 1 is worn.
  • the "expanded and stretched state” of the diaper 1 means that the diaper 1 is in the unfolded state, and the elastic member of each part of the unfolded diaper 1 is stretched to eliminate the influence of the elastic member. It means the state of being expanded until it becomes the same as the dimensions when it is expanded in a flat state.
  • the "skin facing surface” is a surface facing the wearer's skin when wearing the diaper when focusing on the diaper or its constituent members (for example, an absorber), and the “non-skin facing surface” is the diaper. This is the surface that faces the wearer's skin when worn.
  • the skin-facing surface is the surface relatively close to the wearer's skin
  • the non-skin-facing surface is the surface relatively far from the wearer's skin.
  • the diaper 1 includes a liquid-permeable surface sheet 2 that forms a skin-facing surface, and a liquid-impermeable (including water-repellent) leak-proof sheet 3 that forms a non-skin-facing surface.
  • a liquid-retaining absorber 4 arranged between the surface sheet 2 and the leak-proof sheet 3 is provided, and these members constitute the absorbent main body 10.
  • the leak-proof cuff 16 described later is shown in an upright state.
  • the surface sheet 2 and the leak-proof sheet 3 each have a larger size than the absorber 4, and extend outward from the outer peripheral edge of the absorber 4.
  • Each longitudinal end edge of the leak-proof sheet 3 in the present embodiment substantially coincides with the longitudinal end edge of the diaper 1.
  • the diaper 1 includes a liquid-retaining absorber 4.
  • the absorber 4 shown in FIG. 2 is arranged so that its longitudinal direction coincides with the vertical direction X of the diaper, and extends from the ventral side A to the dorsal side B via the inseam C.
  • the longitudinally bilateral edges of the absorber 4 are located inward of the longitudinal X bilateral edges of the diaper 1.
  • the absorber 4 is formed by coating an absorbent core 4a having an absorbent performance on a liquid-permeable core wrap sheet 4b.
  • the diaper 1 includes a pair of leakage-proof cuffs 16 and 16 arranged along both sides of the absorbent body 10 along the vertical direction X.
  • the leak-proof cuff 16 includes a thread-shaped elastic member for forming a cuff 16a and a water-repellent and breathable sheet for forming a cuff 16b.
  • the leak-proof cuff 16 stands up toward the wearer's skin side at least in the inseam C due to the contraction of the elastic member 16a for forming the cuff, whereby excrement such as urine flows out in the lateral direction Y. Suppress that.
  • the diaper 1 is provided with a pair of fastening tapes 7 and 7 on both side edges of the dorsal portion B along the vertical direction X.
  • Each fastening tape 7 is provided so as to extend outward in the lateral direction Y from both side edges of the dorsal portion B along the vertical direction X.
  • One end of each fastening tape 7 on the inner side in the lateral direction is fixed to a sheet member constituting the diaper 1, preferably between the sheet members constituting the diaper 1, for example, a leak-proof sheet 3 and an outer layer. It is fixed between the sheet 5 and the sheet (not shown).
  • the fastening tape 7 of the present embodiment has a tape base material 70 and an engaging portion 71 fixed to the skin facing surface of the tape base material 70.
  • the engaging portion 71 has an engaging projection on the surface facing the skin.
  • a male material of a mechanical fastener can be used as the engaging portion 71.
  • the mechanical fastener is composed of a male material in which a large number of engaging protrusions are arranged on the surface and a female material in which a material capable of directly engaging the engaging protrusions is arranged on the surface.
  • various known ones can be used without particular limitation.
  • the diaper 1 is provided with a fastening member 6 to which the engaging portion 71 included in the fastening tape 7 can be detachably fastened to the non-skin facing surface of the ventral side portion A.
  • the fastening member 6 is configured to include the female material of the mechanical fastener described above.
  • the material forming the portion of the fastening member 6 to which the engaging portion 71 is fastened that is, the material of the female material can be selected according to the shape of the engaging protrusion of the engaging portion 71.
  • As the material of the female material for example, a loop portion, a mesh portion, or the like, or a non-woven fabric having a high degree of engagement can be used.
  • the fastening member 6 is provided on the outer layer sheet 5 forming the non-skin facing surface in the ventral side A of the diaper 1.
  • the diaper 1 of the present embodiment includes an outer layer sheet 5 arranged on the non-skin facing surface side of the absorbent main body 10, that is, on the non-skin facing surface side of the leak-proof sheet 3.
  • the outer layer sheet 5 forms the outer surface (non-skin facing surface) of the diaper 1.
  • the outer layer sheet 5 of the present embodiment extends from the ventral side A to the dorsal side B via the crotch portion C in the vertical direction X.
  • the outer layer sheet 5 forms the outer shape of the diaper 1 in the expanded and extended state, and the peripheral edge of the outer layer sheet 5 forms the contour lines of the ventral side portion A, the inseam portion C, and the dorsal side portion B, respectively. There is. As shown in FIG.
  • the contour of the diaper 1 of the present embodiment constricts the central side of the vertical direction X, that is, the inseam C and the parts of the ventral side A and the dorsal side B on the crotch C side.
  • the end side of the vertical direction X in each of the ventral side portion A and the dorsal side portion B projects laterally Y outward from the portion on the crotch portion C side.
  • the outer layer sheet 5 extends outward in the lateral direction Y from both side edges along the vertical direction X of the absorber 4, and has a side flap portion together with the leak-proof sheet 3 and the cuff forming sheet 16b constituting the leak-proof cuff 16.
  • Forming SF is a portion made of a sheet member extending outward in the horizontal direction Y from both side edges of the absorber 4 along the vertical direction X.
  • the seat member constituting the side flap portion SF extends from the ventral side portion A to the dorsal side portion B via the crotch portion C, and extends laterally Y outward from each of both side edges of the absorber 4. In the extending portion, they are joined to each other by known joining means such as an adhesive, a heat seal, and an ultrasonic seal.
  • the elastic members 15 for forming leg gathers are provided on both side portions of the diaper 1 along the vertical direction X, specifically, the pair of side flap portions SF and SF. Is arranged in an extended state so as to extend in the vertical direction X through the lower crotch C. Due to the contraction of the elastic member 15, leg gathers are formed on the left and right portions arranged around the wearer's legs, that is, on both sides of the diaper 1 in the vertical direction X. In the present embodiment, the leg gather forming elastic member 15 is fixed in an extended state along the vertical direction X between the cuff forming sheet 16b and the leakage-proof sheet 3 in the side flap portion SF.
  • the outer layer sheet 5 has a flat fiber-containing region R in which flat fibers are present, at least on the surface of the ventral side A on the non-skin facing surface side.
  • a fastening member 6 is provided in the flat fiber-containing region R on the ventral side A.
  • the fastening member 6 is adhered to the flat fiber-containing region R.
  • the portion of the ventral side A to which the fastening member 6 is adhered is at least the flat fiber-containing region R, and the area of the flat fiber-containing region R is the area of the fastening member 6.
  • the entire fastening member 6 overlaps the flat fiber-containing region R.
  • the flat fiber is a fiber having a flatness (major axis length / minor axis length) of 1.2 or more in the cross section of the fiber.
  • the flatness is 1, and as the degree of crushing of the cross section increases (closer to an elliptical shape), the flatness becomes larger than 1.
  • the abundance of the flat fibers in the flat fiber-containing region R is preferably 60% or more, more preferably 70% or more.
  • the upper limit of the abundance rate of the flat fibers in the flat fiber-containing region R is not particularly limited and may be 100%. The abundance of such flat fibers is measured by the following measuring method.
  • the outer layer sheet 5 on the ventral side A is taken out from the diaper 1, and the fastening member 6 is peeled off from the outer layer sheet 5.
  • the measurement piece On the non-skin facing surface of the outer layer sheet 5, the measurement piece is cut out from the region where the fastening member 6 is adhered.
  • the measuring piece has a quadrangular shape (8 mm ⁇ 4 mm) in a plan view, and can be obtained by cutting the outer layer sheet 5 with a razor (for example, a single blade manufactured by Feather Safety Shaving Blade Co., Ltd.).
  • a cutting method there is a method of putting the outer layer sheet 5 in liquid nitrogen to sufficiently freeze the outer layer sheet 5 prior to cutting the outer layer sheet 5, and then cutting the outer layer sheet 5.
  • double-sided paper tape (Nichiban Co., Ltd. Nystack NW-15)
  • the measurement piece is then platinum coated.
  • an ion sputtering device E-1030 (trade name) manufactured by Hitachi Naka Seiki Co., Ltd. is used, and the sputtering time is 30 seconds.
  • the cut surface of the measurement piece is observed at a magnification of 1000 times using an S-4000 type field emission scanning electron microscope manufactured by Hitachi, Ltd.
  • observe the cross section of the fiber existing on the non-skin facing surface of the measurement piece measure the major axis length and the minor axis length of the cross section of the fiber, and divide the major axis length by the minor axis length.
  • a method for obtaining flat fibers that is, fibers having a large degree of crushing of the cross section
  • 2) a normal spinneret (with a cross section of a spinneret).
  • Examples thereof include known methods such as a method of performing post-processing such as pressurization on a fiber deposit obtained by using a perfect circular shape or a shape similar thereto.
  • the flatness of the spinneret in the method 1) may be the same as the flatness of the target fiber, or may be higher than the flatness of the target fiber.
  • the method 2) is preferable from the viewpoint of surely aligning the long axis direction of the flat fiber with the plane direction of the nonwoven fabric to further improve the adhesiveness of the fastening member 6.
  • the method 2) can be carried out, for example, by pressurizing and consolidating a fiber aggregate (nonwoven fabric) containing fibers having a perfect circular cross section while heating as necessary. Such a method can be carried out, for example, by calendar processing.
  • the outer layer sheet 5 may have a flat fiber-containing region R at least on the ventral side A.
  • the outer layer sheet 5 of the present embodiment partially has a flat fiber-containing region R on the ventral side A.
  • the outer layer sheet 5 may have a flat fiber-containing region R in the entire area of the ventral side A, or the entire area of the outer layer sheet 5 may have a flat fiber-containing region R.
  • the fastening member 6 has a first surface 61 to which the fastening tape 7 is fastened, and a second surface 62 opposite to the first surface 61.
  • the first surface 61 is a surface that engages with the engaging protrusion in the engaging portion 71 of the fastening tape 7, and is provided with an engaged portion (female material) such as a loop portion that engages with the engaging protrusion.
  • the second surface 62 is adhered to the flat fiber-containing region R via an adhesive.
  • the surface contact area ratio of the first surface 61 and the second surface 62 of the fastening member 6 is different. Specifically, the second surface 62 has a higher surface contact area ratio than the first surface 61.
  • the surface contact area ratio is an index showing the degree of unevenness on the surface. The surface contact area ratio is measured by the method described later.
  • the fastening tape 7 is fastened to the fastening member 6, so that the waist opening WH through which the wearer's torso is passed and the wearer's lower limbs are formed. A pair of leg openings LH to be passed is formed and worn by the wearer.
  • the fastening member 6 is adhered to the flat fiber-containing region R of the outer layer sheet 5, the adhesiveness between the fastening member 6 and the outer layer sheet 5 is excellent. This is because the flat fibers are present in the portion where the fastening member 6 is adhered, and the second surface 62 having a surface contact area ratio larger than that of the first surface 61 is an adhesive surface with the outer layer sheet 5.
  • the first surface 61 which is the surface having the lower surface contact area ratio, is located on the surface of the diaper 1 opposite to the skin facing surface side, so that the adhesiveness with the outer layer sheet 5 is improved. While improving, the engaging force between the engaging portion 71 and the fastening member 6 in the fastening tape 7 can be easily secured. According to the diaper 1 of the present embodiment, the bonding strength between the fastening member 6 and the outer layer sheet 5 can be improved without increasing the amount of the adhesive used, or the fastening member 6 and the outer layer sheet 5 can be attached to each other.
  • the adhesiveness between the outer layer sheet 5 and the fastening member 6 can be ensured without using a large amount of adhesive, so that the texture of the outer surface of the diaper 1 is maintained well. At the same time, it is possible to suppress the generation of odor due to a large amount of adhesive.
  • a measuring piece having a size of 60 mm in the vertical direction ⁇ 30 mm in the horizontal direction is cut out from the fastening member 6. This measuring piece is placed on a horizontal table under no pressure so that the surface to be measured (first surface 61 or second surface 62) faces up.
  • a transparent acrylic plate is placed on the measuring piece, and a weight is placed on the acrylic plate so that the measuring piece is pressurized at 1.7 kPa.
  • the surface shape of the surface to be measured in the pressurized measuring piece is measured using a high-precision shape measuring system KS-1100 manufactured by Keyence. Specifically, the thickness of each position on the measuring piece is measured.
  • the measurement conditions are a measurement pitch of 50 ⁇ m and a moving speed of 10 cm / s, and a range of 30 mm in the vertical direction ⁇ 30 mm in the horizontal direction is measured.
  • the measurement result (image) thus obtained is analyzed using a shape analysis application KS-Analyzer manufactured by Keyence Corporation. Then, the position where the maximum thickness is obtained in the measurement piece and the position where the thickness difference from the maximum thickness is 200 ⁇ m or less are extracted, and this is referred to as a “high thickness region”. Further, the position where the thickness difference from the maximum thickness of the measurement piece exceeds 200 ⁇ m is defined as a “low thickness region”.
  • the area of the high-thickness region is measured by binarizing the high-thickness region and the low-thickness region. Specifically, the image is taken into Image-Pro Plus manufactured by Nippon Roper Co., Ltd., and the black-and-white contrast is set to 100 by enhancing the contrast. After removing noise by a filter process (median, 5 ⁇ 5 5 times), a count process is performed to measure the total area of the high-thickness region displayed in white or black. Then, the total area of the high-thickness region is divided by the area of the measuring piece (30 mm in the vertical direction ⁇ 30 mm in the horizontal direction), and this is taken as the surface contact area ratio. When measuring the surface contact area ratio of the flat fiber-containing region R in the outer layer sheet 5, the portion where the fastening member 6 is peeled off is cut out and used as a measurement piece.
  • the surface contact area ratio of the flat fiber-containing region R in the outer layer sheet 5 is set to S1 and the first in the fastening member 6.
  • the ratio of S2 to S1 (S2 / S1) is preferably 0.7 or more, more preferably 0.8 or more, and preferably 1.4 or less. It is more preferably 1.3 or less, preferably 0.7 or more and 1.4 or less, and more preferably 0.8 or more and 1.3 or less.
  • the surface contact area ratio of the first surface 61 of the fastening member 6 is set to S3.
  • the ratio of S2 to S3 (S2 / S3) is preferably 1.4 or more, more preferably 1.5 or more, and more preferably. Is 10 or less, more preferably 9 or less, preferably 1.4 or more and 10 or less, and more preferably 1.5 or more and 9 or less.
  • the surface contact area ratios of the flat fiber-containing region R of the outer layer sheet 5 and the second surface 62 of the fastening member 6 are within the following ranges. Is preferable.
  • the surface contact area ratio of the flat fiber-containing region R is preferably 70% or more, more preferably 80% or more, preferably 100% or less, more preferably 95% or less, and more preferably. It is 70% or more and 100% or less, more preferably 80% or more and 95% or less.
  • the surface contact area ratio in the outer layer sheet 5 may be controlled, for example, by forming an opening in the sheet.
  • the surface contact area ratio of the second surface 62 of the fastening member 6 is preferably 70% or more, more preferably 80% or more.
  • the upper limit of the surface contact area ratio of the second surface 62 is not particularly limited, and the closer it is to 100%, the more preferable.
  • the surface contact area ratio of the first surface 61 of the fastening member 6 is preferably 10% or more, more preferably 20% or more. Further, it is preferably 50% or less, more preferably 40% or less, preferably 10% or more and 50% or less, and more preferably 20% or more and 40% or less.
  • the average friction coefficient MIU of each of the flat fiber-containing region R and the second surface 62 is preferably 0.2 or less, more preferably 0.19. It is as follows.
  • the lower limit of the average friction coefficient MIU of each of the flat fiber-containing region R and the second surface 62 is not particularly limited, and the closer it is to 0, the more preferable.
  • the average deviation MMD of the friction coefficient of each of the flat fiber-containing region R and the second surface 62 is preferably 0.008 or less, more preferably 0.007 or less.
  • the lower limit of the MMD of the friction coefficient for each of the flat fiber-containing region R and the second surface 62 and the closer it is to 0, the more preferable.
  • the outer layer sheet 5 and the fastening member 6 are adhered to each other via an adhesive.
  • a known adhesive such as a hot melt adhesive can be used.
  • Amount of adhesive used to bond the outer layer sheet 5 and the fastening member 6 from the viewpoint of further improving the texture of the diaper 1 on the non-skin facing surface while ensuring the bonding strength between the outer layer sheet 5 and the fastening member 6. Is 10 g / m 2 or more, more preferably 15 g / m 2 or more, preferably 30 g / m 2 or less, more preferably 25 g / m 2 or less, and preferably 10 g / m 2 or more and 30 g / m. It is 2 or less, more preferably 15 g / m 2 and 25 g / m 2 or less.
  • the flat fiber-containing region R or the second surface 62 is coated with an adhesiveness improving agent. That is, it is preferable that the adhesiveness improving agent is applied to the adhesive portions of the outer layer sheet 5 and the fastening member 6.
  • the adhesiveness improving agent improves the adhesiveness of the adhesive. When the member coated with such an adhesiveness improving agent is adhered with an adhesive, it can be adhered more firmly than the one adhered with the adhesive alone.
  • the adhesiveness improving agent one made of a hydrophobic substance can be used.
  • the adhesiveness improver preferably contains an oily component as a component.
  • oily component examples include vegetable oils, silicone compounds, C 12 to C 22 fatty acids or glycerol ester compounds thereof, C 12 to C 44 fatty acid ethers, C 12 to C 22 fatty alcohols, petrolatum and the like. Among these, it is preferable to contain vegetable oil.
  • vegetable oils include olive oil, jojoba oil, rice oil, shea butter, tea oil, aloe oil, argan oil, and peach oil.
  • the adhesiveness improver one or more of the above oily components can be used in combination, and as the adhesiveness improver, a composition containing the above one or more of the above oily components can be used.
  • the adhesiveness improving agent a skin care agent containing shea butter, argan oil or peach oil, a skin care agent containing stearyl alcohol and the like can be preferably used.
  • the adhesiveness improving agent When the adhesiveness improving agent is applied to the flat fiber-containing region R, it may be applied to the portion to which the fastening member 6 of the flat fiber-containing region R is adhered.
  • the adhesiveness improving agent may be applied to either one of the flat fiber-containing region R and the second surface 62, or may be applied to both the flat fiber-containing region R and the second surface 62.
  • the second surface 62 of the fastening member 6 is subjected to a void closing treatment for closing the voids between the fibers.
  • a void closing treatment for closing the voids between the fibers.
  • Examples of such treatment include heat treatment, ultrasonic treatment, ink coating treatment and the like.
  • the surface sheet 2 the leak-proof sheet 3 and the absorber 4
  • those conventionally used for absorbent articles can be used without particular limitation.
  • the surface sheet 2 for example, a liquid-permeable non-woven fabric, a perforated film, or the like can be used.
  • the leak-proof sheet 3 a liquid-impermeable resin film, a laminate of the resin film and a non-woven fabric, or the like can be used.
  • the absorbent core 4 as the absorbent core 4a, an aggregate of hydrophilic fibers such as wood pulp and a hydrophilized synthetic fiber, or an aggregate in which a water-absorbing polymer is retained can be used.
  • the core wrap sheet 4b the same one as the surface sheet 2 can be used.
  • outer layer sheet 5 and the cuff forming sheet 16b for example, non-woven fabrics produced by various manufacturing methods can be used. be able to.
  • the outer layer sheet may be composed of one sheet, or may be composed of a laminated body of a plurality of sheets instead.
  • a water-repellent nonwoven fabric may be used as the cuff forming sheet 16b.
  • the elastic member 16a for forming the cuff and the elastic member 15 for forming the leg gather in the leak-proof cuff 16 various known elastic materials usually used for this kind of absorbent article can be used without particular limitation.
  • the elastic material examples include synthetic rubber such as styrene-butadiene, butadiene, isoprene and neoprene, natural rubber, EVA, elastic polyolefin and polyurethane.
  • synthetic rubber such as styrene-butadiene, butadiene, isoprene and neoprene, natural rubber, EVA, elastic polyolefin and polyurethane.
  • a thread-like (thread rubber, etc.) or string-like (flat rubber, etc.) having a rectangular, square, circular, or polygonal cross section, or a multifilament type thread-like member is preferably used. can.
  • the tape base material 70 and the engaging portion 71 forming the fastening tape 7, and the forming materials of the fastening member 6 can be used without particular limitation as long as they are usually used for a deployable disposable diaper.
  • the shape of the engaging protrusion in the engaging portion 71 is not particularly limited, and may be a hook shape, an anchor shape, a hook shape, or the like.
  • "Magic Tape (registered trademark)” manufactured by Kuraray
  • “Quicklon (registered trademark)” manufactured by YKK
  • Majicross (registered trademark)” Shinebo
  • a non-woven fabric When a non-woven fabric is used for the fastening member 6, it is preferably an air-through non-woven fabric from the viewpoint of facilitating engagement.
  • a synthetic resin such as polyethylene, polypropylene, polyethylene terephthalate, etc., and a sheet or non-woven fabric made of a composite material of two or more kinds of these synthetic resins can be used.
  • the fastening member 6 is formed by laminating a layer forming the first surface 61 and a layer forming the second surface 62. It is preferable to have a laminated structure of two or more layers.
  • the fastening member 6 having such a form include a laminating female material of a mechanical fastener and a non-woven fabric, for example, a laminating non-woven fabric to which an engaging protrusion can be directly engaged and another non-woven fabric.
  • the basis weight of the layer forming the second surface 62 is set from the viewpoint of easily increasing the surface contact area ratio of the second surface 62 as compared with the first surface 61. It is preferably 5 g / m 2 or more, more preferably 10 g / m 2 or more, preferably 35 g / m 2 or less, more preferably 30 g / m 2 or less, and preferably 5 g / m 2 or more and 35 g / m. It is 2 or less, more preferably 10 g / m 2 and 30 g / m 2 or less.
  • the fact that the fastening member 6 does not overlap with the leg gather forming elastic member 15 in a plan view is a viewpoint of adhesiveness between the outer layer sheet 5 and the fastening member 6 when the diaper 1 is worn. Is preferable.
  • the leg gather forming elastic member 15 and the fastening member 6 are separated from each other in the expanded and extended state of the diaper 1. As a result, even if the amount of the adhesive is reduced, the adhesiveness between the outer layer sheet 5 and the fastening member 6 can be maintained more stably even when worn.
  • the separation distance between the leg gather forming elastic member 15 and the fastening member 6 in the vertical direction X is preferably 10 mm or more, more preferably 15 mm or more.
  • the separation distance is the distance in the expanded and extended state of the diaper 1, and is the end portion of the elastic member 15 for forming leg gathers in the ventral side A in the vertical direction X and the crotch lower portion C side of the fastening member 6.
  • the fastening member 6 is heavy with the expansion / contraction region of the leakage-proof cuff 16 in a plan view, as shown in FIG. It is preferable not to be.
  • the expansion / contraction region of the leakage-proof cuff 16 is a region that can be expanded / contracted in the vertical direction X by the elastic member 16a for forming the cuff.
  • An example of a form in which the fastening member 6 does not overlap with the expansion / contraction region includes a form in which the fastening member 6 does not overlap the leakage-proof cuff 16 itself in a plan view, and the fastening member 6 is a cuff in a plan view.
  • Examples thereof include a form in which the elastic member 16a for forming does not overlap with the stretchable portion.
  • the fastening member 6 may be overlapped only with the non-stretchable portion of the cuff forming elastic member 16a, or may be overlapped only with the non-stretchable portion of the leak-proof cuff 16. Can be mentioned.
  • non-stretchable portion of the cuff-forming elastic member 16a is, for example, a portion in which the elastic member 16a is arranged on the cuff-forming sheet 16b in a non-extended state.
  • the “non-stretchable portion of the leak-proof cuff 16” is, for example, a portion where the cuff forming sheet 16b is fixed to another component of the diaper 1 and becomes non-stretchable.
  • the leak-proof cuff 16 has a base end portion that becomes an upright end when standing up toward the wearer's skin, and a free end portion.
  • the leak-proof cuff 16 has a bent portion extending in the vertical direction X between the base end portion and the free end portion, and the space between the bent portion and the free end portion projects laterally Y outward. Is preferable. More specifically, the leak-proof cuff 16 has a first upright portion located between the base end and the bent portion, and a second upright portion located between the bent portion and the free end portion. It is preferable that the second standing portion extends outward in the lateral direction Y.
  • the central region of the outer layer sheet 5 (the region between the pair of leakage-proof cuffs 16 and 16) tends to be flattened, and the adhesiveness between the fastening member 6 and the outer layer sheet 5 can be further stabilized.
  • the influence of wrinkles due to the expansion and contraction of the leakage-proof cuff 16 on the first surface 61 is reduced, so that the fastening tape 7 and the first surface 61 of the fastening member 6 are combined.
  • the fastening is more reliable. Such an effect is effective for a small size diaper 1 for infants and the like.
  • the contact surface between the wearer's skin and the leakage-proof cuff 16 becomes large, so that the performance of suppressing lateral leakage of excrement can be improved.
  • the second standing portion of the leak-proof cuff 16 includes a plurality of elastic members 16a for forming a cuff, the elastic member 16a for forming the cuff and the fastening member 6 are separated from each other in the thickness direction of the diaper 1, so that the fastening member 6 is separated. It is preferable in that wrinkles are less likely to occur due to expansion and contraction of the elastic member.
  • the present invention has been described above based on the preferred embodiment thereof, the present invention is not limited to the above-described embodiment.
  • the above-mentioned absorbent article was a so-called deployable disposable diaper having a fastening tape, but can be applied to, for example, a diaper cover (pad holder) or a band-shaped body that can be attached and detached around the waist, and is intended for infants. It may be for adults.
  • the absorbent article of the present invention broadly includes articles used for absorbing body fluids (urine, loose stool, menstrual blood, sweat, etc.) discharged from the human body. For example, incontinence pads, sanitary napkins, sanitary shorts and the like are included.
  • absorbent articles are further disclosed with respect to the above-described embodiment of the present invention.
  • It has a vertical direction corresponding to the front-back direction of the wearer and a lateral direction orthogonal to the vertical direction, and is arranged in the crotch part of the wearer, and the ventral side and the back extending in the front-back direction of the crotch part.
  • It has a side portion, and is provided on both side edges of the dorsal portion along the longitudinal direction, and is provided on a non-skin facing surface of the ventral side portion, and the fastening tape can be fastened.
  • An absorbent article with a fastening member The outer layer sheet forming the non-skin facing surface on the ventral side has a flat fiber-containing region in which flat fibers are present on at least the surface on the non-skin facing surface side.
  • the fastening member has a first surface to which the fastening tape is fastened and a second surface opposite to the first surface, and the second surface has a surface contact area larger than that of the first surface.
  • the ratio of S2 to S3 (S2 / S3) is 1.
  • ⁇ 6> The absorption according to any one of ⁇ 1> to ⁇ 5>, wherein the outer layer sheet has a surface contact area ratio of 70% or more and 100% or less, preferably 80% or more and 95% or less in the flat fiber-containing region. Sex goods.
  • ⁇ 7> The absorbent article according to any one of ⁇ 1> to ⁇ 6>, wherein the fastening member has a surface contact area ratio of 70% or more on the second surface.
  • ⁇ 8> The absorbent article according to any one of ⁇ 1> to ⁇ 7>, wherein the fastening member has a surface contact area ratio of 80% or more and 100% or less on the second surface.
  • ⁇ 11> The absorbent article according to any one of ⁇ 1> to ⁇ 10>, wherein the flat fiber-containing region and the second surface each have an average friction coefficient of 0.2 or less.
  • ⁇ 12> The absorbent article according to any one of ⁇ 1> to ⁇ 11>, wherein the flat fiber-containing region and the second surface each have an average deviation MMD of friction coefficient of 0.008 or less.
  • ⁇ 13> The absorbent article according to any one of ⁇ 1> to ⁇ 12>, wherein the flat fiber-containing region or the second surface is coated with an adhesiveness improving agent.
  • the amount of the adhesive used to bond the outer layer sheet and the fastening member is 10 g / m 2 or more and 30 g / m 2 or less, preferably 15 g / m 2 above 25 g / m 2 or less.
  • ⁇ 15> The absorption according to any one of ⁇ 1> to ⁇ 14>, wherein the fastening member has a laminated structure in which a layer forming the first surface and a layer forming the second surface are laminated. Sex goods.
  • ⁇ 18> The absorbent article according to ⁇ 17>, wherein the distance between the leg gather forming elastic member and the fastening member in the vertical direction is 10 mm or more, preferably 15 mm or more.
  • a pair of leak-proof cuffs are provided on both sides of the absorbent body including the absorber along the vertical direction.
  • ⁇ 20> The absorbent article according to ⁇ 19>, wherein the fastening member does not overlap with a portion of the leak-proof cuff that has an elastic member for forming a cuff.
  • the leak-proof cuff is a bending extending in the vertical direction between a base end portion, a free end portion, and the base end portion and the free end portion, which are the standing ends when standing toward the wearer's skin. Has a part and Further, it has a first standing portion located between the base end portion and the bent portion, and a second standing portion located between the bent portion and the free end portion.
  • the leak-proof cuff is provided with a plurality of elastic members for forming a cuff in the second upright portion.
  • Example 1 The outer layer sheet 5 and the fastening member 6 in the above-mentioned diaper were prepared.
  • An air-through nonwoven fabric (basis weight 20 g / m 2 ) composed of polyethylene terephthalate and polyethylene composite fibers was subjected to calender treatment to form a flat fiber-containing region R, which was used as an outer layer sheet 5.
  • the calendar processing was performed by a two-stage calendar processing using a metal calendar roll and a resin roll. The first-stage calendar processing was performed in a non-heated state under a linear pressure of 255 N / cm, and the second-stage calendar processing was performed in a non-heated state under a linear pressure of 115 N / cm.
  • the air-through nonwoven fabric A1 (basis weight 20 g / m 2 ) made of polypropylene and polyethylene composite fibers and the air-through nonwoven fabric A2 (basis weight 15 g) made of polypropylene and polyethylene composite fibers are used. / M2 ) was laminated to prepare a sheet in which both air-through nonwoven fabrics A1 and A2 were integrated by embossing. Further, a composite member in which the fastening member 6 was adhered to the outer layer sheet 5 was produced.
  • the adhesive member 6 is attached to the flat fiber-containing region R of the outer layer sheet 5 so that the nonwoven fabric A1 is on the second surface [rubber-based (styrene-butadiene-based) general-purpose hot-melt adhesive. ] was used to fix it, and this was used as a composite member. The amount of the adhesive used was 20 g / m 2 .
  • an air-through nonwoven fabric (basis weight 21 g / m 2 ) composed of polyethylene terephthalate and polyethylene composite fibers is subjected to pressure opening treatment, and the flat fiber-containing region R other than the opening portion is subjected to pressure opening treatment. A sheet in which the surface contact area ratio was controlled by opening holes was produced.
  • an air-through nonwoven fabric A3 (basis weight 15 g / m 2 ) made of polyethylene terephthalate and polyethylene composite fibers and an air-through nonwoven fabric A4 (tsubo) made of polyethylene terephthalate and polyethylene composite fibers are used.
  • a sheet having an amount of 10 g / m 2 ) was laminated and integrated by embossing to prepare a sheet. Further, the composite member was produced by the same method as in Example 1 except that the fastening member 6 was fixed to the flat fiber-containing region R of the outer layer sheet 5 so that the nonwoven fabric A3 was the second surface. ..
  • Comparative Examples 1 and 2 In Comparative Example 1, two sheets of the nonwoven fabric A1 were laminated to produce an integrated sheet by embossing, and in Comparative Example 2, two sheets of the nonwoven fabric A2 were laminated to produce an integrated sheet by embossing. Each sheet was used as a fastening member. Except for these points, the outer layer sheet 5 and the composite member were produced by the same method as in Example 1.
  • Comparative Examples 4 and 5 In Comparative Example 4, the outer layer sheet 5 was stopped by the same method as in Comparative Example 3, except that the fastening member of Comparative Example 1 was used, and in Comparative Example 5, the fastening member of Comparative Example 2 was used. The attachment member 6 and the composite member were manufactured.
  • the flat fiber-containing region of the outer layer sheet and the surface contact area ratios of the first surface and the second surface of the fastening member were measured.
  • the average friction coefficient MIU and the average deviation MMD of the friction coefficient of each of the flat fiber-containing region of the outer layer sheet and the second surface of the fastening member were measured. These measurements were performed according to the method described above. The measurement results are shown in Table 1.
  • the adhesiveness of the outer layer sheet and the fastening member of each Example and Comparative Example was evaluated by the following methods. First, the adhesive [rubber-based (styrene-butadiene-based) general-purpose hot-melt adhesive, usage amount 20 g / m 2 ] applied to the release paper in advance is transferred to the second surface (adhesive surface) of the fastening member. Then, it was placed on the flat fiber-containing region R of the outer layer sheet with the adhesive surface facing down. Next, the 1 kg roller was reciprocated three times on the fastening member to fix the fastening member to the outer layer sheet.
  • the adhesive rubber-based (styrene-butadiene-based) general-purpose hot-melt adhesive, usage amount 20 g / m 2
  • a measurement piece having a width of 3 cm and a length of 3 cm is cut out from the portion where the fastening member and the outer layer sheet are adhered to each other, and the edge portion of the outer layer sheet in the measurement piece is sandwiched between clips to push-pull gauge (RX-20). , Made by Aiko Engineering Co., Ltd.). Then, the push-pull gauge was pulled until the fastening member was peeled from the outer layer sheet, and the peeling strength between the fastening member and the outer layer sheet was measured. Then, the adhesiveness between the outer layer sheet and the fastening member was evaluated according to the following criteria. A: The peel strength is 0.4 N or more. B: The peel strength is less than 0.4N.
  • the adhesive member and the outer layer sheet are adhered to each other with an adhesive strength lower than the actual adhesive strength of the diaper.
  • the peel strength is 0.4 N or more, it is a guideline that the adhesion between the outer layer sheet and the fastening member in the diaper is sufficient.
  • the push-pull gauge is pulled until the fastening tape is detached from the fastening member, the engagement strength between the fastening tape and the fastening member is measured, and the engagement force between the fastening tape and the fastening member is measured according to the following criteria.
  • the engagement strength is 2.0 N or more, it is a guideline that the engagement force between the fastening tape and the fastening member is sufficient.
  • the evaluation results are shown in Table 1.
  • B The engagement strength is less than 2.0 N.
  • the peel strength between the outer layer sheet and the fastening member was 0.4 N or more, and the engagement strength between the fastening tape and the fastening member was 2.0 N or more. From this result, it was shown that the composite member of each embodiment has excellent adhesiveness between the outer layer sheet and the fastening member while ensuring the engaging force between the fastening tape and the fastening member. In each embodiment, the adhesiveness between the outer layer sheet and the fastening member is excellent without increasing the amount of the adhesive used, so that the texture of the outer layer sheet can be maintained well. On the other hand, in each comparative example, the evaluation of either one or both of the adhesiveness between the outer layer sheet and the fastening member and the engaging force between the fastening tape and the fastening member was low.
  • the absorbent article of the present invention it is possible to achieve both the adhesiveness of the fastening member on the outer surface of the absorbent article and the texture of the absorbent article while ensuring the engaging force between the fastening tape and the fastening member. can.

Landscapes

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

Abstract

La présente invention concerne un article absorbant (1) qui comprend une bande de fixation (7) et un élément de fixation (6) apte à fixer la bande de fixation (7). Une feuille de couche externe (5) qui forme une surface non tournée vers la peau dans une section abdominale (A) de l'article absorbant (1) comprend une région contenant des fibres plates (R) dans laquelle des fibres plates sont présentes au moins sur la surface du côté de la surface non tournée vers la peau. L'élément de fixation (6) comprend : une première surface 61 à l'intérieur de laquelle la bande de fixation (7) est disposée ; et une seconde surface (62) sur le côté opposé à la première surface (61). La seconde surface (62) a un rapport de surface de contact supérieur à celui de la première surface (61) et la seconde surface (62) est collée à la région contenant des fibres plates (R).
PCT/JP2021/026576 2020-08-05 2021-07-15 Article absorbant WO2022030211A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180058097.XA CN116096336A (zh) 2020-08-05 2021-07-15 吸收性物品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-133412 2020-08-05
JP2020133412A JP2022029861A (ja) 2020-08-05 2020-08-05 吸収性物品

Publications (1)

Publication Number Publication Date
WO2022030211A1 true WO2022030211A1 (fr) 2022-02-10

Family

ID=80117943

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/026576 WO2022030211A1 (fr) 2020-08-05 2021-07-15 Article absorbant

Country Status (3)

Country Link
JP (1) JP2022029861A (fr)
CN (1) CN116096336A (fr)
WO (1) WO2022030211A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09294772A (ja) * 1996-04-30 1997-11-18 Kao Corp 使い捨ておむつ
JP2015066374A (ja) * 2013-09-30 2015-04-13 ユニ・チャーム株式会社 吸収性物品
JP2019055092A (ja) * 2017-09-22 2019-04-11 大王製紙株式会社 テープタイプ使い捨ておむつ
JP2019097607A (ja) * 2017-11-28 2019-06-24 花王株式会社 吸収性物品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09294772A (ja) * 1996-04-30 1997-11-18 Kao Corp 使い捨ておむつ
JP2015066374A (ja) * 2013-09-30 2015-04-13 ユニ・チャーム株式会社 吸収性物品
JP2019055092A (ja) * 2017-09-22 2019-04-11 大王製紙株式会社 テープタイプ使い捨ておむつ
JP2019097607A (ja) * 2017-11-28 2019-06-24 花王株式会社 吸収性物品

Also Published As

Publication number Publication date
CN116096336A (zh) 2023-05-09
JP2022029861A (ja) 2022-02-18

Similar Documents

Publication Publication Date Title
RU2653484C1 (ru) Впитывающее изделие с частично охатывающим герметизирующим элементом для талии и способ его изготовления
US7597689B2 (en) Disposable absorbent article with improved topsheet
US8382736B2 (en) Relative stiffness fasteners
EP1793782A2 (fr) Article absorbant dote d'un systeme de fixation sans boucle
WO2015151871A1 (fr) Procédé de production de structure étirable pour article absorbant, procédé de fabrication de couche jetable de type culotte et couche jetable de type culotte
JP5069532B2 (ja) 未熟児又は低出生体重児用使い捨ておむつ
JP2015198915A5 (fr)
RU2605844C2 (ru) Впитывающее изделие
JP2015173751A (ja) パンツタイプ使い捨ておむつ
JP2006515215A (ja) 伸縮性締着部材を有する吸収性物品
WO2020026683A1 (fr) Structure élastique de vêtement jetable, et vêtement jetable de type culotte doté de ladite structure élastique
US20240173175A1 (en) Front or rear opening closed-sided absorbent articles
US11752045B2 (en) Front or rear opening closed-sided absorbent articles
US11672708B2 (en) Front or rear opening closed-sided absorbent articles
WO2022030211A1 (fr) Article absorbant
WO2018133026A1 (fr) Ensemble de languettes de couche à pli en accordéon et de multiples composants de fixation
JP5220119B2 (ja) 一時的に取り付けられた側方面材を備える衛生用品
RU2795648C1 (ru) Впитывающее изделие
JP3243890U (ja) 吸収性物品及び包装体
WO2022044895A1 (fr) Article absorbant et emballage
TW202106268A (zh) 吸收性物品
CN219461691U (zh) 吸收性物品组以及生理用辅助垫
JP2018020198A (ja) 吸収性物品
WO2021100775A1 (fr) Article portable jetable
JP2016214904A (ja) 吸収性物品の伸縮構造の製造方法、パンツタイプ使い捨ておむつの製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21854605

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023101273

Country of ref document: RU

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21854605

Country of ref document: EP

Kind code of ref document: A1