WO2020089980A1 - Sanitary tampon - Google Patents

Sanitary tampon Download PDF

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Publication number
WO2020089980A1
WO2020089980A1 PCT/JP2018/040163 JP2018040163W WO2020089980A1 WO 2020089980 A1 WO2020089980 A1 WO 2020089980A1 JP 2018040163 W JP2018040163 W JP 2018040163W WO 2020089980 A1 WO2020089980 A1 WO 2020089980A1
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WIPO (PCT)
Prior art keywords
absorbent
fiber
coating layer
layer
fibers
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PCT/JP2018/040163
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French (fr)
Japanese (ja)
Inventor
順一 野口
竜也 田村
Original Assignee
ユニ・チャーム株式会社
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Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN201880098962.1A priority Critical patent/CN112955101B/en
Priority to PCT/JP2018/040163 priority patent/WO2020089980A1/en
Priority to JP2020554625A priority patent/JP7143438B2/en
Publication of WO2020089980A1 publication Critical patent/WO2020089980A1/en

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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
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor

Definitions

  • the present invention relates to a sanitary tampon.
  • Patent Document 1 discloses a sanitary tampon including a liquid-absorbent absorber and a cord for withdrawing the absorber from the vaginal cavity.
  • the absorber has an absorbent layer and a hydrophobic and liquid-permeable coating layer that covers the entire absorbent layer.
  • Patent Document 2 discloses a sanitary sanitary product using natural fibers that are organically (pesticide-free) grown.
  • a plurality of recesses extending inward are formed on the surface of the absorbent layer of the absorbent body, whereby the absorption rate of menstrual blood is improved and the surface of the tampon is colored. The remaining amount is small, the tampon taken out after use does not look bad, and there is no fear of causing discomfort to the user.
  • the absorption area located on the surface of the absorber changes. There is no.
  • the coating layer is hydrophobic, it may be difficult for menstrual blood to migrate to the absorption layer located on the inner side, and the required absorption rate may not be exhibited.
  • natural fibers are more easily fluffed than synthetic fibers, and, for example, when natural fibers are used in the coating layer of a sanitary tampon, some natural fibers are left in the vaginal cavity when pulled out from the vaginal cavity after use. May be left behind.
  • the present invention is an improvement of the conventional sanitary tampon, which improves the absorption rate of menstrual blood, is excellent in safety to the body by using natural fibers, and suppresses the fluffing of the natural fibers. Providing a sanitary tampon that can be made.
  • the present invention relates to a sanitary tampon having a longitudinal direction and a lateral direction, a liquid-absorbent absorber, and a cord for withdrawing the absorber from the vaginal cavity. ..
  • the absorbent body includes an absorbent layer having water-absorbent fibers, and a coating layer that covers the absorbent layer and is formed of a hydrophilic and liquid-permeable fiber nonwoven fabric,
  • the coating layer contains a natural fiber, a plurality of recesses extending from the coating layer to the inside of the absorbent body are formed in the entire area of the absorber, and the natural fibers are adjacent to each other in the longitudinal direction.
  • the water absorption fiber of the absorbent layer and the natural fiber of the coating layer have a fiber length larger than the distance between the recesses and are entwined with each other in the recess.
  • the fiber length of the water-absorbent fiber of the absorbent layer is larger than the fiber length of the natural fiber of the coating layer.
  • the sanitary tampon has a thickness direction and a first surface and a second surface facing each other in the thickness direction, and the plurality of the first and second surfaces are provided.
  • a plurality of rows are formed by arranging the concave portions in the longitudinal direction, and the concave portions in adjacent rows in the lateral direction are not arranged so as to be aligned with each other in the lateral direction.
  • the natural fiber and the water absorbing fiber are oriented in the longitudinal direction.
  • the natural fiber is organically grown cotton fiber.
  • the coating layer is formed only from the organically grown cotton fiber.
  • the absorbent layer is a laminated body formed by stacking a plurality of fiber bundles, and the coating layer is formed of a spunlace fiber nonwoven fabric.
  • the coating layer further has a main body portion that covers the absorbent layer, and an extending portion that extends from the main body portion, and the extending portion. Is tentatively fixed to the main body via the recess while being folded over.
  • the sanitary tampon according to the present invention since the plurality of recesses extending from the coating layer to the inside of the absorbent body are formed in the entire area of the absorbent body, the absorption area is expanded and the diffusivity and the absorption speed are excellent.
  • the use of natural fibers improves the safety of the body and suppresses the fluffing of the natural fibers.
  • FIG. 1 is a perspective view of a sanitary tampon according to the present invention.
  • the top view of the tampon main body (A) A sectional view taken along the line III (a) -III (a) in FIG. 2. (B) A partially enlarged view of the area surrounded by the alternate long and short dash line III (b) in FIG. 2. Sectional drawing which follows the IV-VI line of FIG. (A) A partially enlarged view of a region surrounded by a line V (a) in FIG. 1. 5B is a view similar to FIG. 5A after use.
  • the following embodiments relate to the sanitary tampon 10 shown in FIGS. 1 to 5, and include not only the indispensable configuration of the invention but also selective and preferable configurations.
  • a sanitary tampon 10 which is shown as an example of the sanitary tampon of the present invention, has a longitudinal direction Y and a lateral direction X, an absorber (tampon body) 20, and an absorber.
  • a cord 11 extending from 20 for withdrawing the absorbent body 20 from the vaginal cavity after use.
  • the cord 11 is attached to the absorbent body 20 via a stitching line 9 extending in the longitudinal direction Y at a central portion located at the center of the absorbent body 20 in the lateral direction X.
  • the absorber 20 has a first surface 21a and a second surface 21b facing each other in the thickness direction Z, and has a convexly curved first edge 20a, a substantially V-shaped second edge 20b, and a first edge 21a. Both side edges 20c and 20d extending in the longitudinal direction Y are provided between the first and second end edges 20a and 20b.
  • the absorber 20 may have various known shapes such as a triangular shape, a rectangular shape, a columnar shape, and a prismatic shape, in addition to the substantially arrow blade shape shown in the figure.
  • the absorber 20 includes an absorbent layer 30 having water-absorbent fibers and a coating layer 40 that covers the absorbent layer.
  • the absorbent layer 30 and the covering layer 40 are joined to each other at the suture line 9.
  • the absorbent layer 30 contains constituent fibers capable of absorbing and retaining menstrual blood, and mainly contains water-absorbing fibers such as rayon fibers, pulp fibers, and cotton fibers. In addition to water-absorbing fibers, polypropylene fibers are also used. It may have a thermoplastic synthetic fiber such as or polyethylene fiber.
  • the absorbent layer 30 is formed by shaping the constituent fibers into a desired shape, and has the same shape as the absorbent body. In the illustrated example, the absorbent layer 30 is formed by a fiber lump shape in which the constituent fibers are shaped into a required shape, but as long as the required absorption performance is exhibited, various known spunlace fiber nonwoven fabrics, air-through fiber nonwoven fabrics, etc. You may laminate
  • the coating layer 40 is formed of a hydrophilic and liquid-permeable fibrous nonwoven fabric that covers the entire absorbent layer 30.
  • the coating layer 40 can be formed from a spunlace fiber nonwoven fabric using synthetic fibers such as rayon in addition to natural fibers such as cotton fibers and pulp fibers.
  • that the coating layer 40 has hydrophilicity means that the constituent fibers of the coating layer 40 contain more hydrophilic fibers than synthetic fibers, and the content ratio of the hydrophilic fibers is preferably 60% or more.
  • the coating layer 40 having liquid permeability means that there are a plurality of openings such as fiber gaps and surface treatments that allow menstrual blood attached to the surface of the coating layer 40 to quickly move to the absorbent layer 30 located inside. Means to have.
  • pesticide-free organic (organic) grown cotton fibers are used as hydrophilic natural fibers.
  • organic cotton fiber for the coating layer 40 that directly contacts the user's vaginal cavity the safety to the body is improved as compared with the case of using synthetic resin or chemical fiber containing a chemical substance.
  • the user can safely use the sanitary tampon 10.
  • the content of the organic cotton fibers in the hydrophilic fibers constituting the coating layer 40 is preferably at least 70% or more, more preferably 100% and the coating layer 40 is made of organic cotton. It may be formed only from fibers.
  • the coating layer 40 is formed only of organic cotton fibers, the entire outer surface of the absorbent body 20 does not contain fibers containing chemical substances such as pesticides, so that it is perfect for the body derived from natural materials. By inserting only the safe material into the body, it is possible to give the user a sense of security that the body will not be affected even if it is used for a long time at night.
  • the cord 11 is made of a synthetic fiber such as nylon or polyester, a natural fiber, or the like, and is of a size such that the absorbent body 20 that is located in the vaginal cavity after use and has absorbed menstrual blood can be safely taken out.
  • the absorbent body 20 has a tensile strength of about 5 N or more so as not to be cut when the absorber 20 is taken out.
  • the cord 11 may be subjected to a water repellent treatment in order to prevent menstrual blood from adhering to the cord 11 when it is operated by the user.
  • the absorber 20 has a plurality of recesses 60.
  • the plurality of recesses 60 are arranged on the entire area of the absorber 20, that is, on the first surface 21a and the second surface 21b, and extend from the coating layer 40 to the inside of the absorbent layer 30.
  • the plurality of recesses 60 have a substantially circular shape and are arranged at intervals in the longitudinal direction Y and the lateral direction X. Specifically, the plurality of recesses 60 are arranged so as to be separated in the lateral direction X and form a plurality of rows extending in the longitudinal direction Y, and the recesses 60 in rows adjacent to each other are disposed in the lateral direction.
  • the recesses 61a of the arbitrary first row L1 are arranged so as not to overlap with the recesses 62a of the second row L2 adjacent to the first row L1 in the lateral direction X. Has been done.
  • the spacing dimension (pitch) between the recesses 60 in each row may be the same or different from each other. .. Further, the distances R2 between the recesses 61a in the first row L1 and the recesses 62a in the second row L2 may be the same or different from each other. Furthermore, the separation dimensions R1 and R2 may be the same or different from each other. Here, the separation dimensions R1 and R2 mean the separation dimensions between the center points of the recesses 60.
  • the absorbent body 20 Since the absorbent body 20 has the plurality of concave portions 60 in the entire area, the absorption area (surface area) capable of absorbing menstrual blood is larger than that in the case where the surface thereof is flat. Therefore, more menstrual blood can be absorbed when the absorber 20 is inserted into the vaginal cavity to absorb menstrual blood.
  • the plurality of recesses 60 extend from the coating layer 40 to the inside of the absorbent layer 30, menstrual blood can be drawn into the recesses 60 and quickly absorbed from the inner peripheral surface of the recesses 60 to the absorbent layer 30. it can.
  • the (organic) cotton fiber 41 forming the coating layer 40 enters the inside of the absorbent layer 30.
  • the cotton fibers 41 enter the fiber gaps of the water absorbent fibers 31 of the absorbent layer 30 forming the inner peripheral surface and the bottom surface of the recess 60 and are entangled with each other.
  • the cotton fibers 41 of the coating layer 40 and the water absorbing fibers 31 of the absorbing layer 30 are entangled with each other in the recess 60, so that the coating layer 40 and the absorbing layer 30 are stably bonded and absorbed from the coating layer 40.
  • the transfer of menstrual blood to the layer 30 can be performed reliably and promptly.
  • a fluid process of ejecting a high-pressure fluid onto the absorber 20 or an embossing process of pressurizing with a plurality of pins can be used.
  • the sanitary tampon 10 is accommodated in an applicator for insertion into the vaginal cavity with the absorbent body 20 compressed in a substantially cylindrical shape. Further, by performing the insertion operation using the applicator, the absorbent body 20 is inserted into the vaginal cavity while being used while being compressed in a substantially cylindrical shape. By positioning any one of the surfaces 21b on the outer surface side, menstrual blood can be moved to the plurality of recesses 60 and quickly held and absorbed.
  • the cotton fiber 41 has a fiber length larger than the distance R1 between the recesses 60 adjacent to each other in the longitudinal direction Y. Referring to FIG. 4, since the fiber length of the cotton fiber 41 is larger than the dimension (separation dimension) R1 of the spacing portion located between the recess 61a and the recess 61b, the one end 41a of the cotton fiber 41 is recessed 61a. While being entangled with the water-absorbent fibers 31 forming the concave portion 61b, the other end 41b is entangled with the water-absorbent fibers 31 forming the concave portion 61b.
  • the cotton fibers 41 extend in the longitudinal direction Y so as to extend over the recesses 60 adjacent to each other, so that the cotton fibers 41 are more entangled with only the water-absorbent fibers 31 forming one recess 60. It is possible to firmly bond the coating layer 40 and the absorption layer 30.
  • the distance R1 between the recess 61a and the recess 61b in the longitudinal direction Y is, for example, 3 to 25 mm.
  • cotton fibers 41 are arranged so as to straddle between the recesses 60 adjacent to each other in the longitudinal direction Y, and are entangled with the water absorbent fibers 31 in the recesses 60, so that the absorbent body 20 can be removed from the vaginal cavity after use. When the fibers are pulled out, the entanglement of the fibers is released, and the cotton fibers 41 can be prevented from fluffing.
  • the water-absorbent fiber 31 of the absorbent layer 30 has a fiber length larger than that of the cotton fiber 41. Specifically, while the cotton fiber 41 has a fiber length of 10 to 30 mm and an average fiber length of 13 to 20 mm, the water absorbent fiber 31 has a fiber length of 20 to 70 mm and an average fiber length of 25. ⁇ 50 mm. In this way, since the fiber length of the water-absorbent fiber 31 is relatively large, the menstrual blood guided to each recess 60 can be rapidly transferred in the fiber orientation direction.
  • the average fiber length is, for example, an individual fiber on a glass plate with “A7.1.1 A method (standard method) scale” in “A7.1 Fiber length measurement” of Annex A of JIS L 1015: 2010. Is measured according to the method for measuring length. The above method is a test method equivalent to ISO6989 issued in 1981.
  • the cotton fibers 41 of the covering layer 40 and the water absorbing fibers 31 of the absorbing layer 30 are oriented in the longitudinal direction Y.
  • the fibers 31, 41 constituting the absorbent body 20 are oriented in the longitudinal direction Y, so that menstrual blood can be quickly diffused in the longitudinal direction Y.
  • the fibers 31 and 41 are “oriented in the longitudinal direction Y” when 50% by mass or more of the fibers 31 and 41 are in the range of +45 degrees to ⁇ 45 degrees with respect to the longitudinal direction Y. It means facing.
  • the fiber orientation can be measured using a digital microscope VHX-100 manufactured by Keyence Corporation.
  • the plurality of recesses 60 of the absorber 20 are arranged at intervals in the longitudinal direction Y.
  • the recesses 60 are arranged at intervals in the longitudinal direction Y to form a plurality of rows L1-L3, so that the fibers 31, 41 of the covering layer 40 and the absorbent layer 30 are arranged in the longitudinal direction Y.
  • menstrual blood can be rapidly diffused in the longitudinal direction Y.
  • the recesses 60 of the rows L1 to L4 adjacent in the lateral direction X are not arranged side by side in the lateral direction X.
  • the rigidity of the absorbent body 20 in the short side direction X is relatively low, and the vaginal cavity is used after use. If you pull it out from the inside, your hips may break, making it difficult to pull it out.
  • the recesses 60 in the adjacent rows L1-L4 are not arranged so as to be aligned with each other along the lateral direction X means, for example, the recesses 60 in the first row L1 are translated in the lateral direction X. It means that, when it is done, it does not overlap with a part of the recess 60 of the second row L2.
  • the recess 60 located on the first surface 21a and the recess 60 located on the second surface 21b, which face each other in the thickness direction Z, are slightly displaced in the lateral direction X. ing. That is, since the recesses 60 facing each other in the thickness direction Z are arranged such that their centers are offset from each other in the lateral direction X and do not completely overlap with each other, they are arranged so as to be completely aligned in the thickness direction Z. Compared with the case of the above, it is possible to suppress the rigidity of the portions of the absorbent body 20 facing each other between the concave portions 60 locally, and suppress the deformation of the absorbent body into strain.
  • the absorbing layer 30 is a laminated body formed by stacking a plurality of fiber bundles that have passed through a card machine, and the covering layer 40 may be formed of a spunlace fiber nonwoven fabric. In such a case, since neither the absorbent layer 30 nor the coating layer 40 has a bonding portion to which the thermoplastic synthetic fiber is welded, the absorbent body 20 as a whole is excellent in flexibility.
  • the coating layer 40 When the coating layer 40 is formed of a spunlaced fiber nonwoven fabric, the surface of the coating layer 40 is arranged at intervals in the short-side direction (direction intersecting the machine direction at the time of manufacturing) X, and , A plurality of concave grooves extending in the longitudinal direction (machine direction during manufacturing) Y are formed. By forming a plurality of concave grooves extending in the longitudinal direction Y on the covering layer 40 itself, menstrual blood is easily diffused in the longitudinal direction Y on the surface of the absorber 20.
  • the coating layer 40 has a main body portion 70 that covers the absorption layer 30, and an extending portion (free end portion) 71 that extends from the main body portion 70.
  • the extending portion 71 is temporarily fixed to the surface of the main body portion 70 via the plurality of recesses 60 in a state of being folded over the main body portion 70.
  • the extending portion 71 since the extending portion 71 is temporarily fixed to the main body portion 70, when the absorbent body 20 is inserted into the vaginal cavity, the extending portion 71 separates from the main body portion 70 and interferes with the operation. There is no such thing.
  • the absorbent body 20 absorbs menstrual blood and absorbs a relatively large amount of menstrual blood in a state where the menstrual blood is diffused throughout the coating layer 40.
  • menstrual blood is diffused not only in the main body portion 70 in contact with the absorbent layer 30 but also in the extended portion 71.
  • the absorbent fiber 31 and the cotton fiber 41 which are entangled with each other in the recess 60 that temporarily fixes the extending portion 71 absorb the menstrual blood and swell, so that the fibers do not contact each other.
  • the entangled state is released and the temporarily stopped state is released.
  • the extending portion 71 is separated from the main body portion 70 and stands up.
  • the extended portion 71 of the coating layer 40 has a function as an indicator for notifying the excretion amount of menstrual blood.

Abstract

Provided is a sanitary tampon which improves menstrual blood absorption speed, is very safe for the body due to the use of natural fibers, and is capable of suppressing pilling of the natural fibers. An absorbent body (20) of this sanitary tampon (10) is provided with an absorbent layer (30) which has water-absorbing fibers (31), and a covering layer (40) which covers the absorbent layer (30) and is formed from a hydrophilic and liquid-permeable nonwoven fabric. The covering layer (40) contains natural fibers (41). A plurality of recesses (60) are formed across the entire region of the absorbent body (20) so as to extend from the covering layer (40) into the interior of the absorbent body (20). The natural fibers (41) have a fiber length which is greater than the distance between adjacent recesses (60) in the lengthwise direction (Y). The water-absorbing fibers (31) of the absorbent layer (30) and the natural fibers (41) of the covering layer (40) are intertwined with one another in the recesses (60).

Description

生理用タンポンSanitary tampons
　本発明は、生理用タンポンに関する。 The present invention relates to a sanitary tampon.
　従来、生理用タンポンは、公知である。例えば、特許文献１には、吸液性の吸収体と、吸収体を膣腔内から引き取るためのコードとを備えた生理用タンポンが開示されている。吸収体は、吸収層と、吸収層の全体を被覆する疎水性かつ透液性の被覆層とを有する。また、特許文献２には、無農薬有機（オーガニック）栽培された天然繊維を使用した衛生生理用品が開示されている。 Conventionally, sanitary tampons are known. For example, Patent Document 1 discloses a sanitary tampon including a liquid-absorbent absorber and a cord for withdrawing the absorber from the vaginal cavity. The absorber has an absorbent layer and a hydrophobic and liquid-permeable coating layer that covers the entire absorbent layer. Further, Patent Document 2 discloses a sanitary sanitary product using natural fibers that are organically (pesticide-free) grown.
特開２００１－８９６４号公報（Ｐ２００１－８９６４Ａ）Japanese Patent Laid-Open No. 2001-8964 (P2001-8964A) 特開２００６－１５００１０号公報（Ｐ２００６－１５００１０Ａ）Japanese Patent Laid-Open No. 2006-15010 (P2006-15010A)
　特許文献１に開示された生理用タンポンにおいては、吸収体の吸収層の表面にその内部へ延びる複数の凹部が形成されていることによって、経血の吸収速度が向上し、タンポンの表面に色残りが少なく、使用後において取り出したタンポンの見た目が悪くなることはなく、使用者に対して不快感を与えるおそれはない。 In the sanitary tampon disclosed in Patent Document 1, a plurality of recesses extending inward are formed on the surface of the absorbent layer of the absorbent body, whereby the absorption rate of menstrual blood is improved and the surface of the tampon is colored. The remaining amount is small, the tampon taken out after use does not look bad, and there is no fear of causing discomfort to the user.
　しかしながら、複数の凹部は、吸収体のうちの吸収層にのみ形成されていて、吸収層を被覆する被覆層には形成されていないことから、吸収体の表面に位置する吸収面積が変化することはない。加えて、被覆層は疎水性であるから、内方側に位置する吸収層への経血の移行自体がし難く、所要の吸収速度を発揮することができないおそれがある。 However, since the plurality of recesses are formed only in the absorption layer of the absorber and not in the coating layer that covers the absorption layer, the absorption area located on the surface of the absorber changes. There is no. In addition, since the coating layer is hydrophobic, it may be difficult for menstrual blood to migrate to the absorption layer located on the inner side, and the required absorption rate may not be exhibited.
　また、特許文献２に開示された衛生生理用品においては、構成材料に無農薬有機栽培された天然繊維（コットン繊維、麻繊維）を使用することによって、合成樹脂や化学物質等による身体への負荷がなく、身体への安全性に優れる。 Further, in the sanitary and sanitary products disclosed in Patent Document 2, by using natural fibers (cotton fibers, hemp fibers) which are organically cultivated as pesticides, the load on the body due to synthetic resins, chemical substances, etc. It is excellent in safety to the body.
　しかしながら、天然繊維は合成繊維等に比べて毛羽立ち易く、例えば、生理用タンポンの被覆層に天然繊維を使用した場合には、使用後に膣腔内から引き出すときに膣空内に天然繊維の一部が取り残されてしまうおそれがある。 However, natural fibers are more easily fluffed than synthetic fibers, and, for example, when natural fibers are used in the coating layer of a sanitary tampon, some natural fibers are left in the vaginal cavity when pulled out from the vaginal cavity after use. May be left behind.
　本発明は、従来の生理用タンポンの改良であって、経血の吸収速度を向上するとともに、天然繊維を使用して身体への安全性に優れ、かつ、天然繊維の毛羽立ちを抑制することのできる生理用タンポンの提供に関する。 The present invention is an improvement of the conventional sanitary tampon, which improves the absorption rate of menstrual blood, is excellent in safety to the body by using natural fibers, and suppresses the fluffing of the natural fibers. Providing a sanitary tampon that can be made.
　前記課題を解決するために、本発明は、長手方向及び短手方向を有し、吸液性の吸収体と、前記吸収体を膣空内から引き取るためのコードとを備えた生理用タンポンに関する。 In order to solve the above problems, the present invention relates to a sanitary tampon having a longitudinal direction and a lateral direction, a liquid-absorbent absorber, and a cord for withdrawing the absorber from the vaginal cavity. ..
　本発明に係る生理用タンポンは、前記吸収体は、吸水性繊維を有する吸収層と、前記吸収層を被覆する、親水性かつ透液性の繊維不織布から形成された被覆層とを備え、前記被覆層は、天然繊維を含み、前記吸収体の全域には、前記被覆層から前記吸収体の内部まで延びる複数の凹部が形成されていて、前記天然繊維は、前記長手方向において互いに隣り合う前記凹部間の離間距離よりも大きい繊維長を有し、前記吸収層の前記吸水性繊維と前記被覆層の前記天然繊維とが、前記凹部において互いに絡み合っていることを特徴とする。 In the sanitary tampon according to the present invention, the absorbent body includes an absorbent layer having water-absorbent fibers, and a coating layer that covers the absorbent layer and is formed of a hydrophilic and liquid-permeable fiber nonwoven fabric, The coating layer contains a natural fiber, a plurality of recesses extending from the coating layer to the inside of the absorbent body are formed in the entire area of the absorber, and the natural fibers are adjacent to each other in the longitudinal direction. The water absorption fiber of the absorbent layer and the natural fiber of the coating layer have a fiber length larger than the distance between the recesses and are entwined with each other in the recess.
　本発明に係る生理用タンポンの実施態様の一つにおいて、前記吸収層の前記吸水性繊維の繊維長は、前記被覆層の天然繊維の繊維長よりも大きい。 In one embodiment of the sanitary tampon according to the present invention, the fiber length of the water-absorbent fiber of the absorbent layer is larger than the fiber length of the natural fiber of the coating layer.
　本発明に係る生理用タンポンの実施態様の一つにおいて、厚さ方向と、前記厚さ方向において対向する第１面と第２面とを有し、前記第１面及び第２面において前記複数の凹部が前記長手方向に並べられることによって複数の列が形成されており、前記短手方向において隣り合う列どうしの凹部は、前記短手方向において互いに並ぶように配置されていない。 In one of the embodiments of the sanitary tampon according to the present invention, the sanitary tampon has a thickness direction and a first surface and a second surface facing each other in the thickness direction, and the plurality of the first and second surfaces are provided. A plurality of rows are formed by arranging the concave portions in the longitudinal direction, and the concave portions in adjacent rows in the lateral direction are not arranged so as to be aligned with each other in the lateral direction.
　本発明に係る生理用タンポンの実施態様の一つにおいて、前記天然繊維と前記吸水性繊維とは、前記長手方向へ配向している。 In one embodiment of the sanitary tampon according to the present invention, the natural fiber and the water absorbing fiber are oriented in the longitudinal direction.
　本発明に係る生理用タンポンの実施態様の一つにおいて、前記天然繊維は、有機栽培されたコットン繊維である。 In one embodiment of the sanitary tampon according to the present invention, the natural fiber is organically grown cotton fiber.
　本発明に係る生理用タンポンの実施態様の一つにおいて、前記被覆層は、前記有機栽培されたコットン繊維のみから形成される。 In one embodiment of the sanitary tampon according to the present invention, the coating layer is formed only from the organically grown cotton fiber.
　本発明に係る生理用タンポンの実施態様の一つにおいて、前記吸収層は、繊維束を複数重ねて形成した積層体であって、前記被覆層は、スパンレース繊維不織布から形成されている。 In one embodiment of the sanitary tampon according to the present invention, the absorbent layer is a laminated body formed by stacking a plurality of fiber bundles, and the coating layer is formed of a spunlace fiber nonwoven fabric.
　本発明に係る生理用タンポンの実施態様の一つにおいて、前記被覆層は、前記吸収層を被覆する主体部と、前記主体部から延出する延出部分とをさらに有し、前記延出部分は前記主体部に折り重ねた状態で前記凹部を介して仮止めされている。 In one of the embodiments of the sanitary tampon according to the present invention, the coating layer further has a main body portion that covers the absorbent layer, and an extending portion that extends from the main body portion, and the extending portion. Is tentatively fixed to the main body via the recess while being folded over.
　本発明に係る生理用タンポンでは、吸収体の全域に被覆層から吸収体の内部まで延びる複数の凹部が形成されていることによって、吸収面積を拡げて拡散性及び吸収速度に優れる。また、天然繊維を使用することで身体に対する安全性が向上するとともに、天然繊維の毛羽立ちを抑制することができる。 In the sanitary tampon according to the present invention, since the plurality of recesses extending from the coating layer to the inside of the absorbent body are formed in the entire area of the absorbent body, the absorption area is expanded and the diffusivity and the absorption speed are excellent. In addition, the use of natural fibers improves the safety of the body and suppresses the fluffing of the natural fibers.
　図面は、本発明の特定の実施の形態を示し、発明の不可欠な構成ばかりでなく、選択的及び好ましい実施の形態を含む。
本発明に係る、生理用タンポンの斜視図。 タンポン本体の平面図。 （ａ）図２のＩＩＩ（ａ）－ＩＩＩ（ａ）線に沿う断面図。（ｂ）図２の一点鎖線ＩＩＩ（ｂ）で囲んだ領域の一部拡大図。 図３のＩＶ－ＶＩ線に沿う断面図。 （ａ）図１のＶ（ａ）線で囲んだ領域の一部拡大図。（ｂ）使用後における、図５（ａ）と同様の図。 The drawings show specific embodiments of the invention and include not only the essential components of the invention, but also alternative and preferred embodiments.
1 is a perspective view of a sanitary tampon according to the present invention. The top view of the tampon main body. (A) A sectional view taken along the line III (a) -III (a) in FIG. 2. (B) A partially enlarged view of the area surrounded by the alternate long and short dash line III (b) in FIG. 2. Sectional drawing which follows the IV-VI line of FIG. (A) A partially enlarged view of a region surrounded by a line V (a) in FIG. 1. 5B is a view similar to FIG. 5A after use.
　下記の実施の形態は、図１～図５に示す生理用タンポン１０に関し、発明の不可欠な構成ばかりでなく、選択的及び好ましい構成を含む。 The following embodiments relate to the sanitary tampon 10 shown in FIGS. 1 to 5, and include not only the indispensable configuration of the invention but also selective and preferable configurations.
　図１～図３を参照すると、本発明の生理用タンポンの一例として示す、生理用タンポン１０は、長手方向Ｙと短手方向Ｘとを有し、吸収体（タンポン本体）２０と、吸収体２０から延出する、使用後に膣空内から吸収体２０を引き取るためのコード１１とを含む。コード１１は、吸収体２０の短手方向Ｘの中央に位置する中央部分において長手方向Ｙへ延びる縫合ライン９を介して、吸収体２０に取り付けられている。 Referring to FIGS. 1 to 3, a sanitary tampon 10, which is shown as an example of the sanitary tampon of the present invention, has a longitudinal direction Y and a lateral direction X, an absorber (tampon body) 20, and an absorber. A cord 11 extending from 20 for withdrawing the absorbent body 20 from the vaginal cavity after use. The cord 11 is attached to the absorbent body 20 via a stitching line 9 extending in the longitudinal direction Y at a central portion located at the center of the absorbent body 20 in the lateral direction X.
　吸収体２０は、厚さ方向Ｚにおいて互いに対向する第１面２１ａ及び第２面２１ｂと有し、凸曲状の第１端縁２０ａと、略Ｖ字状の第２端縁２０ｂと、第１及び第２端縁２０ａ，２０ｂ間において長手方向Ｙへ延びる両側縁２０ｃ，２０ｄとを有する。吸収体２０は、図示された略矢羽根状のほかに、三角状、矩形状、円柱状、角柱状等の各種公知の形状を有していてもよい。 The absorber 20 has a first surface 21a and a second surface 21b facing each other in the thickness direction Z, and has a convexly curved first edge 20a, a substantially V-shaped second edge 20b, and a first edge 21a. Both side edges 20c and 20d extending in the longitudinal direction Y are provided between the first and second end edges 20a and 20b. The absorber 20 may have various known shapes such as a triangular shape, a rectangular shape, a columnar shape, and a prismatic shape, in addition to the substantially arrow blade shape shown in the figure.
　吸収体２０は、吸水性繊維を有する吸収層３０と、吸収層を被覆する被覆層４０とを含む。吸収層３０と被覆層４０とは、縫合ライン９において互いに接合されている。 The absorber 20 includes an absorbent layer 30 having water-absorbent fibers and a coating layer 40 that covers the absorbent layer. The absorbent layer 30 and the covering layer 40 are joined to each other at the suture line 9.
　吸収層３０は、経血を吸収、保持することができる構成繊維を含むものであって、主としてレーヨン繊維、パルプ繊維、コットン繊維等の吸水性繊維を含み、吸水性繊維のほかに、ポリプロピレン繊維やポリエチレン繊維等の熱可塑性の合成繊維を有していてもよい。吸収層３０は、構成繊維を所要の形状に賦形したものであって、吸収体と同形状を有している。図示例では、吸収層３０は、構成繊維を所要の形状に賦形した繊維塊状によって形成されているが、所要の吸収性能を発揮する限りにおいて、スパンレース繊維不織布、エアスルー繊維不織布等の各種公知の繊維不織布を積層して形成してもよい。 The absorbent layer 30 contains constituent fibers capable of absorbing and retaining menstrual blood, and mainly contains water-absorbing fibers such as rayon fibers, pulp fibers, and cotton fibers. In addition to water-absorbing fibers, polypropylene fibers are also used. It may have a thermoplastic synthetic fiber such as or polyethylene fiber. The absorbent layer 30 is formed by shaping the constituent fibers into a desired shape, and has the same shape as the absorbent body. In the illustrated example, the absorbent layer 30 is formed by a fiber lump shape in which the constituent fibers are shaped into a required shape, but as long as the required absorption performance is exhibited, various known spunlace fiber nonwoven fabrics, air-through fiber nonwoven fabrics, etc. You may laminate | stack and form the fibrous nonwoven fabric of this.
　被覆層４０は、吸収層３０全体を包被する、親水性かつ透液性を有する繊維不織布から形成される。具体的には、被覆層４０は、コットン繊維、パルプ繊維等の天然繊維のほかに、レーヨン等の合成繊維を用いたスパンレース繊維不織布から形成することができる。ここで、被覆層４０が親水性を有するとは、被覆層４０の構成繊維において親水性繊維が合成繊維よりも多く含まれていて、好ましくは、親水性繊維の含有率が６０％以上であることを意味する。また、被覆層４０が透液性を有するとは、被覆層４０の表面に付着した経血が速やかに内部に位置する吸収層３０に移行できる程度の繊維間隙や表面加工による複数の開孔を有することを意味する。 The coating layer 40 is formed of a hydrophilic and liquid-permeable fibrous nonwoven fabric that covers the entire absorbent layer 30. Specifically, the coating layer 40 can be formed from a spunlace fiber nonwoven fabric using synthetic fibers such as rayon in addition to natural fibers such as cotton fibers and pulp fibers. Here, that the coating layer 40 has hydrophilicity means that the constituent fibers of the coating layer 40 contain more hydrophilic fibers than synthetic fibers, and the content ratio of the hydrophilic fibers is preferably 60% or more. Means that. Further, the coating layer 40 having liquid permeability means that there are a plurality of openings such as fiber gaps and surface treatments that allow menstrual blood attached to the surface of the coating layer 40 to quickly move to the absorbent layer 30 located inside. Means to have.
　本実施形態においては、親水性の天然繊維として、無農薬有機（オーガニック）栽培されたコットン繊維が使用されている。使用者の膣腔内に直接触れる被覆層４０にオーガニックのコットン繊維を使用することによって、化学物質を含む合成樹脂や化学繊維を使用する場合に比して、身体に対しての安全性が向上し、使用者は安心して生理用タンポン１０を使用することができる。 In this embodiment, pesticide-free organic (organic) grown cotton fibers are used as hydrophilic natural fibers. By using organic cotton fiber for the coating layer 40 that directly contacts the user's vaginal cavity, the safety to the body is improved as compared with the case of using synthetic resin or chemical fiber containing a chemical substance. However, the user can safely use the sanitary tampon 10.
　被覆層４０を構成する親水性繊維のうちオーガニックのコットン繊維の含有率は、少なくとも７０％以上であることが好ましく、さらに好ましくは、含有率が１００％であって、被覆層４０がオーガニックのコットン繊維のみから形成されていてもよい。被覆層４０がオーガニックのコットン繊維のみから形成されている場合には、吸収体２０の外面全体に農薬等の化学物質を含む繊維が含まれることがないので、天然素材由来の身体に対して完全に安全な材料のみを体内に挿入することで、使用者に対して夜間等において長時間使用しても身体に影響を与えることがないという安心感を与えることができる。 The content of the organic cotton fibers in the hydrophilic fibers constituting the coating layer 40 is preferably at least 70% or more, more preferably 100% and the coating layer 40 is made of organic cotton. It may be formed only from fibers. When the coating layer 40 is formed only of organic cotton fibers, the entire outer surface of the absorbent body 20 does not contain fibers containing chemical substances such as pesticides, so that it is perfect for the body derived from natural materials. By inserting only the safe material into the body, it is possible to give the user a sense of security that the body will not be affected even if it is used for a long time at night.
　コード１１は、ナイロンやポリエステル等の合成繊維や天然繊維等から形成されるものであって、使用後に膣腔内に位置する、経血を吸収した吸収体２０を安全に取り出すことのできる程度の引張強度を有する。具体的には、吸収体２０を取り出すときに切断されないように、約５Ｎ以上の引張強度を備えることが好ましい。なお、コード１１には、使用者が操作するときに経血が付着するのを抑制するために、撥水処理が施されていてもよい。 The cord 11 is made of a synthetic fiber such as nylon or polyester, a natural fiber, or the like, and is of a size such that the absorbent body 20 that is located in the vaginal cavity after use and has absorbed menstrual blood can be safely taken out. Has tensile strength. Specifically, it is preferable that the absorbent body 20 has a tensile strength of about 5 N or more so as not to be cut when the absorber 20 is taken out. The cord 11 may be subjected to a water repellent treatment in order to prevent menstrual blood from adhering to the cord 11 when it is operated by the user.
　図２及び図３（ａ），（ｂ）を参照すると、吸収体２０は、複数の凹部６０を有する。複数の凹部６０は、吸収体２０の全域、すなわち、第１面２１ａ及び第２面２１ｂに配置されており、被覆層４０から吸収層３０の内部まで延びている。複数の凹部６０は、略円形状であって、長手方向Ｙ及び短手方向Ｘにおいて互いに間隔を空けて配置されている。具体的には、複数の凹部６０は、短手方向Ｘにおいて離間し、かつ、長手方向Ｙへ延びる複数の列をなすように配置されていて、互いに隣り合う列の凹部６０どうしは短手方向Ｘにおいて重ならないように位置している。したがって、図３（ｂ）を参照すると、例えば、任意の第１列Ｌ１の凹部６１ａは、第１列Ｌ１と隣り合う第２列Ｌ２の凹部６２ａと短手方向Ｘにおいて互いに重ならないように配置されている。 Referring to FIGS. 2 and 3A and 3B, the absorber 20 has a plurality of recesses 60. The plurality of recesses 60 are arranged on the entire area of the absorber 20, that is, on the first surface 21a and the second surface 21b, and extend from the coating layer 40 to the inside of the absorbent layer 30. The plurality of recesses 60 have a substantially circular shape and are arranged at intervals in the longitudinal direction Y and the lateral direction X. Specifically, the plurality of recesses 60 are arranged so as to be separated in the lateral direction X and form a plurality of rows extending in the longitudinal direction Y, and the recesses 60 in rows adjacent to each other are disposed in the lateral direction. It is located so that it does not overlap in X. Therefore, referring to FIG. 3B, for example, the recesses 61a of the arbitrary first row L1 are arranged so as not to overlap with the recesses 62a of the second row L2 adjacent to the first row L1 in the lateral direction X. Has been done.
　各列における凹部６０どうしの離間寸法（ピッチ）、すなわち、例えば、第１列Ｌ１の凹部６１ａ，６１ｂ間の離間寸法Ｒ１どうしは互いに同じ大きさであってもよいし、相違していてもよい。また、第１列Ｌ１の凹部６１ａと第２列Ｌ２の凹部６２ａとの離間寸法Ｒ２どうしは、互いに同じ大きさであってもよいし、相違していてもよい。さらに、離間寸法Ｒ１，Ｒ２どうしは、互いに同じ大きさであってもよいし、相違していてもよい。ここで、離間寸法Ｒ１，Ｒ２は、凹部６０の中心点間の離間寸法を意味する。 The spacing dimension (pitch) between the recesses 60 in each row, that is, the spacing dimension R1 between the recesses 61a and 61b in the first row L1 may be the same or different from each other. .. Further, the distances R2 between the recesses 61a in the first row L1 and the recesses 62a in the second row L2 may be the same or different from each other. Furthermore, the separation dimensions R1 and R2 may be the same or different from each other. Here, the separation dimensions R1 and R2 mean the separation dimensions between the center points of the recesses 60.
　吸収体２０は、全域において複数の凹部６０を有することによって、その表面が平坦状である場合に比べて経血を吸収することのできる吸収面積（表面面積）が大きくなる。したがって、吸収体２０を膣空内に挿入して経血を吸収するときにより多くの経血を吸収することができる。加えて、複数の凹部６０は、被覆層４０から吸収層３０の内部に延びていることから、経血を凹部６０に引き込んで凹部６０の内周面から吸収層３０へ速やかに吸収することができる。 Since the absorbent body 20 has the plurality of concave portions 60 in the entire area, the absorption area (surface area) capable of absorbing menstrual blood is larger than that in the case where the surface thereof is flat. Therefore, more menstrual blood can be absorbed when the absorber 20 is inserted into the vaginal cavity to absorb menstrual blood. In addition, since the plurality of recesses 60 extend from the coating layer 40 to the inside of the absorbent layer 30, menstrual blood can be drawn into the recesses 60 and quickly absorbed from the inner peripheral surface of the recesses 60 to the absorbent layer 30. it can.
　図４を参照すると、凹部６０において、被覆層４０を構成する（オーガニック）コットン繊維４１が、吸収層３０の内部に進入している。具体的には、凹部６０の内周面や底面を形成する吸収層３０の吸水性繊維３１の繊維間隙にコットン繊維４１が進入して互いに絡み合っている。このように、凹部６０において被覆層４０のコットン繊維４１と吸収層３０の吸水性繊維３１とが互いに絡み合うことによって、被覆層４０と吸収層３０とが安定的に結合されて被覆層４０から吸収層３０への経血の移行を確実に、かつ速やかに行うことができる。 Referring to FIG. 4, in the recess 60, the (organic) cotton fiber 41 forming the coating layer 40 enters the inside of the absorbent layer 30. Specifically, the cotton fibers 41 enter the fiber gaps of the water absorbent fibers 31 of the absorbent layer 30 forming the inner peripheral surface and the bottom surface of the recess 60 and are entangled with each other. In this manner, the cotton fibers 41 of the coating layer 40 and the water absorbing fibers 31 of the absorbing layer 30 are entangled with each other in the recess 60, so that the coating layer 40 and the absorbing layer 30 are stably bonded and absorbed from the coating layer 40. The transfer of menstrual blood to the layer 30 can be performed reliably and promptly.
　このように、凹部６０において繊維どうしを交絡させる方法としては、例えば、吸収体２０に対して高圧の流体を噴射する流体処理又は複数のピンで加圧するエンボスピン加工を用いることができる。 As described above, as a method of intertwining the fibers in the recess 60, for example, a fluid process of ejecting a high-pressure fluid onto the absorber 20 or an embossing process of pressurizing with a plurality of pins can be used.
　図示していないが、生理用タンポン１０は、膣腔内へ挿入するためのアプリケータに吸収体２０が略円筒状に圧縮された状態で収容される。また、アプリケータを用いて挿入操作を行うことによって、吸収体２０は、使用するときにも膣腔内へ略円筒状に圧縮された状態のまま挿入されるが、第１面２１ａ又は第２面２１ｂのいずれかが外面側に位置することによって、複数の凹部６０に経血を移動させて速やかに保持、吸収させることができる。 Although not shown, the sanitary tampon 10 is accommodated in an applicator for insertion into the vaginal cavity with the absorbent body 20 compressed in a substantially cylindrical shape. Further, by performing the insertion operation using the applicator, the absorbent body 20 is inserted into the vaginal cavity while being used while being compressed in a substantially cylindrical shape. By positioning any one of the surfaces 21b on the outer surface side, menstrual blood can be moved to the plurality of recesses 60 and quickly held and absorbed.
　コットン繊維４１は、長手方向Ｙにおいて互いに隣り合う凹部６０間の離間距離Ｒ１よりも大きい繊維長を有している。図４を参照すると、コットン繊維４１の繊維長が、凹部６１ａと凹部６１ｂとの間に位置する離間部分の寸法（離間寸法）Ｒ１よりも大きいことから、コットン繊維４１の一方端４１ａが凹部６１ａを形成する吸水性繊維３１と絡み合う一方、他方端４１ｂが凹部６１ｂを形成する吸水性繊維３１と絡み合っている。このように、コットン繊維４１が長手方向Ｙへ互いに隣り合う凹部６０に跨るように延在することによって、コットン繊維４１が１つの凹部６０を形成する吸水性繊維３１にのみ絡み合う場合に比べてより強固に被覆層４０と吸収層３０とを結合させることができる。なお、凹部６１ａと凹部６１ｂとの長手方向Ｙにおける離間寸法Ｒ１は、例えば、３～２５ｍｍである。 The cotton fiber 41 has a fiber length larger than the distance R1 between the recesses 60 adjacent to each other in the longitudinal direction Y. Referring to FIG. 4, since the fiber length of the cotton fiber 41 is larger than the dimension (separation dimension) R1 of the spacing portion located between the recess 61a and the recess 61b, the one end 41a of the cotton fiber 41 is recessed 61a. While being entangled with the water-absorbent fibers 31 forming the concave portion 61b, the other end 41b is entangled with the water-absorbent fibers 31 forming the concave portion 61b. In this way, the cotton fibers 41 extend in the longitudinal direction Y so as to extend over the recesses 60 adjacent to each other, so that the cotton fibers 41 are more entangled with only the water-absorbent fibers 31 forming one recess 60. It is possible to firmly bond the coating layer 40 and the absorption layer 30. The distance R1 between the recess 61a and the recess 61b in the longitudinal direction Y is, for example, 3 to 25 mm.
　また、通常、コットン繊維の繊度は比較的に小さいことから毛羽立ち易く、被覆層にコットン繊維を使用した場合には、使用後に膣腔内から経血を吸収した吸収体を取り出すときに、摩擦によってコットン繊維が毛羽立って膣腔内に残留するおそれがある。本実施形態においては、コットン繊維４１が長手方向Ｙにおいて隣り合う凹部６０間を跨ぐように配置され、かつ、凹部６０において吸水性繊維３１と絡み合うことによって、吸収体２０を使用後に膣腔内から引き取り出すときに、かかる繊維どうしの交絡が解除されて、コットン繊維４１が毛羽立つのを抑制することができる。 In addition, since the fineness of cotton fibers is usually relatively small, it easily fluffs, and when cotton fibers are used for the coating layer, friction may occur when the absorbent body that has absorbed menstrual blood is taken out from the vaginal cavity after use. Cotton fibers may fluff and remain in the vaginal cavity. In the present embodiment, the cotton fibers 41 are arranged so as to straddle between the recesses 60 adjacent to each other in the longitudinal direction Y, and are entangled with the water absorbent fibers 31 in the recesses 60, so that the absorbent body 20 can be removed from the vaginal cavity after use. When the fibers are pulled out, the entanglement of the fibers is released, and the cotton fibers 41 can be prevented from fluffing.
　また、吸収層３０の吸水性繊維３１は、コットン繊維４１の繊維長よりも大きな繊維長を有している。具体的には、コットン繊維４１の繊維長が１０～３０ｍｍであって平均繊維長が１３～２０ｍｍであるのに対し、吸水性繊維３１の繊維長が２０～７０ｍｍであって平均繊維長が２５～５０ｍｍである。このように、比較的に吸水性繊維３１の繊維長が大きいことから、各凹部６０に誘導された経血を繊維の配向する方向へ速やかに移行させることができる。平均繊維長は、例えば、ＪＩＳ  Ｌ  １０１５：２０１０の附属書Ａの「Ａ７．１  繊維長の測定」の「Ａ７．１．１  Ａ法（標準法）目盛りが付いたガラス板上で個々の繊維の長さを測定する方法」に従って測定される。なお、上記方法は、１９８１年に発行されたＩＳＯ  ６９８９に相当する試験方法である。 The water-absorbent fiber 31 of the absorbent layer 30 has a fiber length larger than that of the cotton fiber 41. Specifically, while the cotton fiber 41 has a fiber length of 10 to 30 mm and an average fiber length of 13 to 20 mm, the water absorbent fiber 31 has a fiber length of 20 to 70 mm and an average fiber length of 25. ~ 50 mm. In this way, since the fiber length of the water-absorbent fiber 31 is relatively large, the menstrual blood guided to each recess 60 can be rapidly transferred in the fiber orientation direction. The average fiber length is, for example, an individual fiber on a glass plate with “A7.1.1 A method (standard method) scale” in “A7.1 Fiber length measurement” of Annex A of JIS L 1015: 2010. Is measured according to the method for measuring length. The above method is a test method equivalent to ISO6989 issued in 1981.
　被覆層４０のコットン繊維４１と吸収層３０の吸水性繊維３１とは、長手方向Ｙへ配向している。このように、吸収体２０を構成する繊維３１，４１が長手方向Ｙへ配向することによって、経血を長手方向Ｙへ速やかに拡散させることができる。なお、繊維３１，４１が「長手方向Ｙへ配向する」とは、繊維３１，４１全体のうちの５０質量％以上の繊維が、長手方向Ｙに対して＋４５度から－４５度の範囲内に向いていることを意味する。繊維配向の測定は、株式会社キーエンス製のデジタルマイクロスコープＶＨＸ－１００を用いて行うことができる。 The cotton fibers 41 of the covering layer 40 and the water absorbing fibers 31 of the absorbing layer 30 are oriented in the longitudinal direction Y. In this way, the fibers 31, 41 constituting the absorbent body 20 are oriented in the longitudinal direction Y, so that menstrual blood can be quickly diffused in the longitudinal direction Y. The fibers 31 and 41 are “oriented in the longitudinal direction Y” when 50% by mass or more of the fibers 31 and 41 are in the range of +45 degrees to −45 degrees with respect to the longitudinal direction Y. It means facing. The fiber orientation can be measured using a digital microscope VHX-100 manufactured by Keyence Corporation.
　既述のとおり、吸収体２０の複数の凹部６０は、長手方向Ｙへ間隔を空けて配置されている。このように、凹部６０が長手方向Ｙへ間隔を空けて配置されて複数の列Ｌ１－Ｌ３を形成していることによって、被覆層４０及び吸収層３０の各繊維３１，４１が長手方向Ｙに配向していることと相俟って、経血を長手方向Ｙへ速やかに拡散することができる。 As described above, the plurality of recesses 60 of the absorber 20 are arranged at intervals in the longitudinal direction Y. Thus, the recesses 60 are arranged at intervals in the longitudinal direction Y to form a plurality of rows L1-L3, so that the fibers 31, 41 of the covering layer 40 and the absorbent layer 30 are arranged in the longitudinal direction Y. In combination with the orientation, menstrual blood can be rapidly diffused in the longitudinal direction Y.
　また、短手方向Ｘにおいて隣り合う列Ｌ１－Ｌ４の凹部６０は、短手方向Ｘにおいて互いに並ぶように配置されていない。互いに隣り合う列Ｌ１－Ｌ４の凹部６０が短手方向Ｘに沿って互いに並んで配置された場合には、吸収体２０の短手方向Ｘの剛性が比較的に低くなって、使用後に膣腔内から引き出すときに腰折れしてしまい、引き出し難くなるおそれがある。ここで、「隣り合う列Ｌ１－Ｌ４の凹部６０が短手方向Ｘに沿って互いに並ぶように配置されていない」とは、例えば、第１列Ｌ１の凹部６０を短手方向Ｘへ平行移動したときに、第２列Ｌ２の凹部６０の一部と重ならないことを意味する。 Moreover, the recesses 60 of the rows L1 to L4 adjacent in the lateral direction X are not arranged side by side in the lateral direction X. When the recesses 60 of the rows L1 to L4 adjacent to each other are arranged side by side along the short side direction X, the rigidity of the absorbent body 20 in the short side direction X is relatively low, and the vaginal cavity is used after use. If you pull it out from the inside, your hips may break, making it difficult to pull it out. Here, "the recesses 60 in the adjacent rows L1-L4 are not arranged so as to be aligned with each other along the lateral direction X" means, for example, the recesses 60 in the first row L1 are translated in the lateral direction X. It means that, when it is done, it does not overlap with a part of the recess 60 of the second row L2.
　図３（ａ）を参照すると、厚さ方向Ｚにおいて互いに対向する、第１面２１ａに位置する凹部６０と第２面２１ｂに位置する凹部６０とは、短手方向Ｘにおいて僅かに位置ずれしている。すなわち、厚さ方向Ｚにおいて互いに対向する凹部６０どうしはその中心が短手方向Ｘにおいてずれて配置されており完全に重なっていないことから、それらが厚さ方向Ｚにおいて完全に一致して配置される場合に比べて、吸収体２０の凹部６０どうしの対向する部分の剛性が局所的に低くなって、吸収体が歪に変形するのを抑制することができる。 Referring to FIG. 3A, the recess 60 located on the first surface 21a and the recess 60 located on the second surface 21b, which face each other in the thickness direction Z, are slightly displaced in the lateral direction X. ing. That is, since the recesses 60 facing each other in the thickness direction Z are arranged such that their centers are offset from each other in the lateral direction X and do not completely overlap with each other, they are arranged so as to be completely aligned in the thickness direction Z. Compared with the case of the above, it is possible to suppress the rigidity of the portions of the absorbent body 20 facing each other between the concave portions 60 locally, and suppress the deformation of the absorbent body into strain.
　吸収層３０は、カード機を経た繊維束を複数重ねて形成した積層体であって、被覆層４０は、スパンレース繊維不織布から形成されていてもよい。かかる場合には、吸収層３０と被覆層４０とのいずれにおいても熱可塑性合成繊維が溶着されたボンディング部分を有することがないので、吸収体２０全体として柔軟性に優れる。 The absorbing layer 30 is a laminated body formed by stacking a plurality of fiber bundles that have passed through a card machine, and the covering layer 40 may be formed of a spunlace fiber nonwoven fabric. In such a case, since neither the absorbent layer 30 nor the coating layer 40 has a bonding portion to which the thermoplastic synthetic fiber is welded, the absorbent body 20 as a whole is excellent in flexibility.
　また、被覆層４０がスパンレース繊維不織布から形成された場合には、被覆層４０の表面には、短手方向（製造時の機械方向と交差する方向）Ｘにおいて互いに間隔を空けて並び、かつ、長手方向（製造時の機械方向）Ｙへ延びる複数の凹溝が形成される。被覆層４０自体に長手方向Ｙへ延びる複数の凹溝が形成されることによって、吸収体２０の表面において経血を長手方向Ｙへ拡散しやすくなる。 When the coating layer 40 is formed of a spunlaced fiber nonwoven fabric, the surface of the coating layer 40 is arranged at intervals in the short-side direction (direction intersecting the machine direction at the time of manufacturing) X, and , A plurality of concave grooves extending in the longitudinal direction (machine direction during manufacturing) Y are formed. By forming a plurality of concave grooves extending in the longitudinal direction Y on the covering layer 40 itself, menstrual blood is easily diffused in the longitudinal direction Y on the surface of the absorber 20.
　図５（ａ）を参照すると、被覆層４０は、吸収層３０を被覆する主体部７０と、主体部７０から延出する延出部分（自由端部）７１とを有する。延出部分７１は、主体部７０に折り重ねた状態で複数の凹部６０を介して主体部７０の表面に仮止めされている。このように、延出部分７１が主体部７０に仮止めされていることによって、吸収体２０を膣腔内に挿入するときに延出部分７１が主体部７０から離間して操作の邪魔になることはない。 Referring to FIG. 5A, the coating layer 40 has a main body portion 70 that covers the absorption layer 30, and an extending portion (free end portion) 71 that extends from the main body portion 70. The extending portion 71 is temporarily fixed to the surface of the main body portion 70 via the plurality of recesses 60 in a state of being folded over the main body portion 70. As described above, since the extending portion 71 is temporarily fixed to the main body portion 70, when the absorbent body 20 is inserted into the vaginal cavity, the extending portion 71 separates from the main body portion 70 and interferes with the operation. There is no such thing.
　図５（ｂ）を参照すると、生理用タンポン１０の使用後において、吸収体２０が経血を吸収して被覆層４０全体に経血が拡散した状態において、比較的に多量の経血を吸収、保持した場合には、吸収層３０と接する主体部７０のみならず、延出部分７１にも経血が拡散される。延出部分７１に経血が拡散されることによって、延出部分７１を仮止めしている凹部６０において互いに絡み合う吸収性繊維３１とコットン繊維４１とが経血を吸収して膨潤し、繊維どうしの交絡が解かれて、仮止めされた状態が解除される。仮止めされた状態が解除されることによって、延出部分７１は主体部７０から離間して起立した状態となる。 Referring to FIG. 5 (b), after the sanitary tampon 10 is used, the absorbent body 20 absorbs menstrual blood and absorbs a relatively large amount of menstrual blood in a state where the menstrual blood is diffused throughout the coating layer 40. When held, menstrual blood is diffused not only in the main body portion 70 in contact with the absorbent layer 30 but also in the extended portion 71. When the menstrual blood is diffused in the extending portion 71, the absorbent fiber 31 and the cotton fiber 41 which are entangled with each other in the recess 60 that temporarily fixes the extending portion 71 absorb the menstrual blood and swell, so that the fibers do not contact each other. The entangled state is released and the temporarily stopped state is released. When the temporarily fixed state is released, the extending portion 71 is separated from the main body portion 70 and stands up.
　このように、使用後に吸収層３０と直接接触しない延出部分７１にまで経血が拡散したときに、延出部分７１が起立することになるので、使用者は吸収体２０を膣腔内から取り出したときにより多量の経血が***されたことを認識することができる。一方、使用後において延出部分７１にまで経血が拡散されることはなく、その仮止めが解除されずに主体部７０に倒伏した状態が維持されている場合には、使用者は比較的に少量の経血が***されたことを認識することができる。したがって、被覆層４０の延出部分７１は、経血の***量を知らせるインジケータとしての機能を有するものといえる。 In this way, when menstrual blood diffuses to the extended portion 71 that does not come into direct contact with the absorbent layer 30 after use, the extended portion 71 stands up, so that the user can remove the absorbent body 20 from the vaginal cavity. It is possible to recognize that a large amount of menstrual blood has been excreted when taken out. On the other hand, when the menstrual blood does not diffuse to the extended portion 71 after use, and the temporary retention is not released and the state of lying on the main body 70 is maintained, the user relatively You can recognize that a small amount of menstrual blood has been excreted. Therefore, it can be said that the extended portion 71 of the coating layer 40 has a function as an indicator for notifying the excretion amount of menstrual blood.
　生理用タンポンを構成する部材には、特に明記されていない限りにおいて、本明細書に記載されている材料のほかに、この種の分野において通常用いられている公知の材料を制限なく用いることができる。また、本明細書において使用されている「第１」及び「第２」等の用語は、同様の要素、位置等を単に区別するために用いてある。 Unless otherwise specified, as the members constituting the sanitary tampon, in addition to the materials described in the present specification, known materials usually used in this type of field can be used without limitation. it can. Further, terms such as “first” and “second” used in the present specification are simply used to distinguish similar elements, positions, and the like.
１０　生理用タンポン
２０　吸収体
３０　吸収層
３１　吸水性繊維
４０　被覆層
４１　天然繊維（オーガニックのコットン繊維）
６０　凹部
７０　主体部
７１　延出部分
Ｘ　短手方向
Ｙ　長手方向 10 Sanitary Tampon 20 Absorber 30 Absorbing Layer 31 Water Absorbing Fiber 40 Covering Layer 41 Natural Fiber (Organic Cotton Fiber)
60 concave portion 70 main body portion 71 extended portion X lateral direction Y longitudinal direction

Claims (8)

  1. 　長手方向及び短手方向を有し、吸液性の吸収体と、前記吸収体を膣空内から引き取るためのコードとを備えた生理用タンポンにおいて、
    　前記吸収体は、吸水性繊維を有する吸収層と、前記吸収層を被覆する、親水性かつ透液性の繊維不織布から形成された被覆層とを備え、
    　前記被覆層は、天然繊維を含み、
    　前記吸収体の全域には、前記被覆層から前記吸収体の内部まで延びる複数の凹部が形成されていて、
    　前記天然繊維は、前記長手方向において互いに隣り合う前記凹部間の離間距離よりも大きい繊維長を有し、
    　前記吸収層の前記吸水性繊維と前記被覆層の前記天然繊維とが、前記凹部において互いに絡み合っていることを特徴とする前記生理用タンポン。     A sanitary tampon having a longitudinal direction and a lateral direction, and a liquid-absorbent absorbent body, and a cord for withdrawing the absorbent body from the vaginal cavity,
    The absorbent body includes an absorbent layer having water-absorbent fibers, and a coating layer that covers the absorbent layer and is formed of a hydrophilic and liquid-permeable fiber nonwoven fabric,
    The coating layer includes natural fibers,
    A plurality of recesses extending from the coating layer to the inside of the absorber are formed in the entire region of the absorber,
    The natural fiber has a fiber length that is larger than the distance between the recesses adjacent to each other in the longitudinal direction,
    The sanitary tampon, wherein the water-absorbent fiber of the absorbent layer and the natural fiber of the coating layer are intertwined with each other in the recess.
  2. 　前記吸収層の前記吸水性繊維の繊維長は、前記被覆層の天然繊維の繊維長よりも大きい請求項１に記載のタンポン。 The tampon according to claim 1, wherein the fiber length of the water-absorbent fiber of the absorbent layer is larger than the fiber length of the natural fiber of the coating layer.
  3. 　前記吸収体は、厚さ方向と、前記厚さ方向において対向する第１面と第２面とを有し、前記第１面及び第２面において前記複数の凹部が前記長手方向に並べられることによって複数の列が形成されており、前記短手方向において隣り合う列どうしの前記凹部は、前記短手方向において互いに並ぶように配置されていない請求項１又は２に記載のタンポン。 The absorber has a thickness direction and a first surface and a second surface facing each other in the thickness direction, and the plurality of recesses are arranged in the longitudinal direction on the first surface and the second surface. The tampon according to claim 1 or 2, wherein a plurality of rows are formed by, and the recesses of adjacent rows in the lateral direction are not arranged to be aligned with each other in the lateral direction.
  4. 　前記天然繊維と前記吸水性繊維とは、前記長手方向へ配向している請求項３に記載のタンポン。 The tampon according to claim 3, wherein the natural fiber and the water absorbing fiber are oriented in the longitudinal direction.
  5. 　前記天然繊維は、有機栽培されたコットン繊維である請求項１～４のいずれかに記載されたタンポン。 The tampon according to any one of claims 1 to 4, wherein the natural fiber is organically cultivated cotton fiber.
  6. 　前記被覆層は、前記有機栽培されたコットン繊維のみから形成される請求項５に記載されたタンポン。 The tampon according to claim 5, wherein the coating layer is formed only from the organically grown cotton fibers.
  7. 　前記吸収層は、繊維束を複数重ねて形成した積層体であって、前記被覆層は、スパンレース繊維不織布から形成されている請求項１～６のいずれかに記載されたタンポン。 The tampon according to any one of claims 1 to 6, wherein the absorbent layer is a laminated body formed by stacking a plurality of fiber bundles, and the coating layer is formed of a spunlaced fiber nonwoven fabric.
  8. 　前記被覆層は、前記吸収層を被覆する主体部と、前記主体部から延出する延出部分とをさらに有し、前記延出部分は前記主体部に折り重ねた状態で前記凹部を介して仮止めされている請求項１～７のいずれかに記載のタンポン。 The coating layer further has a main body portion that covers the absorbent layer, and an extending portion that extends from the main body portion, and the extending portion is folded over the main body portion and the concave portion is interposed therebetween. The tampon according to any one of claims 1 to 7, which is temporarily fixed.
PCT/JP2018/040163 2018-10-29 2018-10-29 Sanitary tampon WO2020089980A1 (en)

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