JP2018123455A - Breast milk pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a breast milk pad hardly generating stuffiness between a skin of a wearer and itself as well as hardly generating deformation such as an unprepared bent or wrinkle on its wearing and removing.SOLUTION: A breast milk pad of the invention(1) has a liquid permeable inner sheet (2), a liquid impermeable outer sheet (3) and an absorber (4) situating between these sheets and said outer sheet (3) consists of a non-woven fabric with air permeability and said absorber (4) has a density less than 1.30 g/cmand in addition while said breast milk pad (1) has a central area (A) and an end area (A) extending to surround said central area (A) in plane view, it has a compression area (A) including a compression part (P) in which said absorber (4) is compressed in said thickness direction in said end area (A) and it has a non-compression area (A) which does not include said compression part (P) in said central area (A).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a breast milk pad that is used while being worn inside an underwear such as a brassiere.

  Breast milk pads are known which prevent breastfeeding of breastfeeders such as mothers from leaking into underwear such as bras. Such a breast milk pad is used by wrapping the breast of the wearer between the underwear such as a bra and the breast of the breastfeeder (wearer), and generally faces the skin surface of the wearer. An inner sheet, an outer sheet facing the inner surface of an undergarment such as a brassiere, and an absorbent for absorbing breast milk positioned between the two sheets as a basic configuration. It has a curved shape (specifically, a dome-shaped curved shape in which a substantially central portion of the breast milk pad is convex toward the underwear side).

  Among them, there is also known a breast milk pad that maintains a curved shape that matches the shape of the wearer's breast and that is unlikely to be bent or wrinkled unnecessarily when the breast milk pad is attached or detached. As such a breast milk pad, for example, Patent Document 1 includes a bodily fluid absorber that has a vertical direction and a horizontal direction, and has a first surface facing the wearer's skin and a second surface opposite thereto. A pad body composed of a body fluid absorbing layer and a body fluid leak-proof sheet located on the second surface, and the longitudinal direction at both side edges of the pad body for deforming the first surface into a concave shape A breast milk pad comprising a pair of elastic elastic members extending to the body fluid absorber, the body fluid absorber has a high rigidity region in at least one of the upper and lower ends in the longitudinal direction, and the rigidity of the high rigidity region is the high rigidity region. A breast milk pad is disclosed which is characterized by being higher than that of other areas except. The breast milk pad disclosed in Patent Document 1 can effectively prevent leakage of breast milk by stably attaching the peripheral edge of the breast pad to the wearer's skin when the breast pad is attached or detached. It is said that.

JP 2007-327158 A

  However, the breast milk pad disclosed in Patent Document 1 has a high density of bodily fluid absorbers from the viewpoint of preventing bending and leakage of breast milk, and the bodily fluid leak-proof sheet is made of a plastic film and a nonwoven fabric of thermoplastic synthetic fibers. Because it is made of a laminated body and does not have air permeability, the moisture generated from the breast milk or sweat of the wearer and the body temperature of the wearer cause stuffiness between the wearer's skin and the breast milk pad. It was easy to cause discomfort to the wearer.

  Accordingly, an object of the present invention is to provide a breast milk pad that is unlikely to be bent or wrinkled unnecessarily when worn or detached, and that is less likely to cause stuffiness between the skin of the wearer.

One aspect (aspect 1) of the present invention has a longitudinal direction, a lateral direction, and a thickness direction orthogonal to each other, and a liquid-permeable inner surface sheet that is positioned on the skin-facing surface side in the thickness direction, and the thickness A breast milk pad comprising a liquid-impermeable outer sheet positioned on the non-skin facing surface side in the direction, and an absorbent body positioned between these sheets,
The outer sheet is made of a breathable nonwoven fabric,
The absorber has a density of 1.30 g / cm ³ or less;
Further, the breast pad has a central region including a central part of the breast pad and an end region extending so as to surround the central region in plan view, and the end region The absorbent body has a compressed region including a compressed portion compressed in the thickness direction, and has a non-compressed region that does not include the compressed portion in the central region.
The breast milk pad.

In the end region, the breast pad of the present aspect 1 has high compression by including a compressed region in which the absorbent body is compressed in the thickness direction, while in the central region, the compressed portion. Because it has a non-compressed area that does not contain any parts, it is easy to adapt to the shape of the breast of the wearer. The adapted curved shape can be maintained and leakage of breast milk due to the above-described deformation can be suppressed. Furthermore, since the outer surface sheet is made of a non-woven fabric having air permeability and the absorbent body has a density of 1.30 g / cm ³ or less, the breast milk pad of this embodiment 1 has good air permeability as a whole. Can be exerted, and it is possible to make it less likely to cause stuffiness with the wearer's skin.

Moreover, in another aspect (aspect 2) of the present invention, in the breast milk pad of aspect 1, the breast pad is a breathable outer sheet positioned on the non-skin facing surface side of the outer sheet in the thickness direction. In addition,
Between the absorber and the outer surface sheet, a plurality of first adhesive layers arranged in a second direction extending in a predetermined first direction and orthogonal to the first direction are disposed,
Between the outer sheet and the exterior sheet, a plurality of second adhesive layers extending in the first direction and arranged in the second direction are disposed,
An interval between the first adhesive layers adjacent in the second direction is narrower than an interval between the second adhesive layers adjacent in the second direction.

The breast milk pad of this aspect 2 further includes a breathable exterior sheet positioned on the non-skin facing surface side of the outer sheet in the thickness direction, so that leakage of breast milk can be more reliably ensured a certain breathability. Can be prevented.
In general, when a laminate in which two or more layers are laminated through a plurality of adhesive layers arranged in a plane direction at a predetermined arrangement interval is bent, the inner layer having a large curvature tends to be wrinkled, Although the outer layer having a small curvature is easily tensioned and tensioned, the breast milk pad of this aspect 2 has an arrangement interval of the first adhesive layer arranged between the absorbent body and the outer sheet, and the outer sheet. The first adhesive layer is narrow even if it is curved to fit the shape of the wearer's breast because it is narrower than the arrangement interval of the second adhesive layer arranged between the outer sheet and the outer sheet. By being arranged at intervals, the outer sheet positioned relatively on the inner side (that is, the skin facing surface side) is less likely to wrinkle, while the second adhesive layer is arranged at a wide interval. By relatively outside (ie non-skin facing surface) ) Hardly occur tightness by tension in the outer sheet is close to the breast pads, in a curved shape adapted to the shape of the breast of the wearer, it can be more easily maintained. As a result, the breast milk pad of this aspect 2 can make it difficult to cause inadvertent bending, wrinkles and the like when being attached or detached, and the adhesive layers described above are arranged at predetermined intervals. As a result, good air permeability can be ensured.

In still another aspect (Aspect 3) of the present invention, in the breast milk pad of Aspect 2, the exterior sheet is made of a non-woven fabric having air permeability.
The fiber density of the outer sheet is greater than the fiber density of the exterior sheet.

  Since the breast milk pad of this aspect 3 has a fiber density of the outer sheet larger than the fiber density of the outer sheet, the outer sheet and the outer sheet fiber described above can be used even if the breast milk absorbed by the absorbent exudes from the absorbent body. Due to the density gradient, the breast milk is more easily held in the outer sheet than the outer sheet (specifically, between the constituent fibers of the nonwoven fabric constituting the outer sheet), and can be prevented from leaking out of the breast milk pad.

In still another aspect (Aspect 4) of the present invention, in the breast milk pad of any one of Aspects 1 to 3, the absorber is a water absorbent resin that is a polymer of a water-soluble ethylenically unsaturated monomer; A water-absorbing resin composition comprising a wetting accelerator, the water-absorbing resin composition satisfying the following requirements (A) to (D):
The air permeability of the breast milk pad when 2 g is absorbed is 10 cm ³ / cm ² · s or more.
(A) The physiological saline water retention capacity is 38 to 44 g / g.
(B) The 5-minute value of the non-pressurized DW is 50 mL / g or more (C) The 60-minute value of the non-pressurized DW is 60 mL / g or more (D) The physiological saline flow rate is 5 g / min or more

In the breast milk pad of this embodiment 4, since the absorbent body contains the specific water absorbent resin composition, gel absorption of the water absorbent resin composition hardly occurs even after water absorption (after absorption of breast milk). A certain level or more of air permeability can be secured, and as a result, an air permeability of 2 g water absorption of 10 cm ³ / cm ² · s or more can be obtained as a breast milk pad. Thereby, the breast milk pad of this aspect 4 can make it more difficult to produce the stuffiness between the wearers.

In still another aspect (Aspect 5) of the present invention, in the breast milk pad of Aspect 4, the air permeability at the time of 10 g water absorption of the breast milk pad is 10 cm ³ / cm ² · s or more.

The breast milk pad of the present embodiment 5 has a permeability of 10 g ³ / cm ² · s or more at the time of 10 g water absorption, so that even when the amount of breast milk is large (for example, 10 g), a certain level or more of air permeability can be secured. Thus, it is possible to more reliably prevent stuffiness between the wearer and the wearer.

In still another aspect (Aspect 6) of the present invention, in the breast milk pad of any one of Aspects 1 to 5, the breast pad is for fixing the breast pad to underwear on the surface on the non-skin facing surface side. Having a fastening part,
The said fastening part has a part which overlaps with each of the said pressing parts located in the four corners of the virtual quadrilateral which inscribes the planar view shape of the said absorber, and overlaps with all the said pressing parts in the said thickness direction.

  The breast milk pad of the present aspect 6 overlaps with each of the compressed parts (that is, the compressed parts located at the four corners of the above-described virtual quadrangle) that are easily deformed such as bending or wrinkles when being attached or detached. As mentioned above, since the above-mentioned fastening part is arranged, the above-mentioned fastening part is fixed to the underwear of the wearer, thereby making it more difficult to cause the above-mentioned inadvertent bending, wrinkles and the like. Can do.

  According to the present invention, it is possible to provide a breast milk pad that is unlikely to be bent or wrinkled inadvertently when worn or detached, and that is less likely to cause stuffiness with the wearer's skin.

FIG. 1 is a perspective view of a breast milk pad 1 according to an embodiment of the present invention as viewed from the exterior sheet side. FIG. 2 is a plan view of the breast milk pad 1 as viewed from the inner sheet side in the thickness direction in the unfolded state. FIG. 3 is a plan view of the breast milk pad 1 as viewed in the thickness direction from the exterior sheet side in the unfolded state. 4, the breast-milk pad 1 of Fig. 2 is an end view of a cross-section along the central axis C ₂ of the longitudinally extending laterally. Fig.5 (a) is a top view for demonstrating the positional relationship of the pressing part and fastening part in the breast milk pad 1, FIG.5 (b) shows four corners of the virtual rectangle Vq shown to Fig.5 (a). It is a schematic diagram for demonstrating.

  Hereinafter, preferred embodiments of the breast milk pad of the present invention will be described in detail with reference to the drawings. In this specification, unless otherwise specified, “an object placed on a horizontal surface in an unfolded state (for example, a breast milk pad, an absorber, etc.) “In the case of a pad, viewing in the thickness direction of the object from the inner sheet side” is simply referred to as “plan view”.

Various directions and the like used in this specification are as follows unless otherwise specified.
In this specification, the “longitudinal direction D _L ” of the breast milk pad refers to the “direction in the vertical direction when the breast pad is mounted in the plan view”, and the “lateral direction D _C ” is “in the plan view”. In the breast pad, it refers to the direction that is horizontal when the breast pad is mounted, and the “thickness direction D _T ” refers to the “perpendicular direction with respect to the breast pad placed on the horizontal surface in the unfolded state”. The vertical direction D _L , the horizontal direction D _C, and the thickness direction D _T are orthogonal to each other.
Further, in this specification, in the longitudinal direction D _L of the "breast pads, relative to the longitudinal direction of the central axis C ₂ extending in the longitudinal direction D and the horizontal direction D _C located in the middle of the _L of the mother milk pad the proximal side "referred to as" inner side of the longitudinal direction ", in the longitudinal direction D _L of the" breast-milk pad, outside of the "longitudinal direction relatively distal" with respect to the central axis C ₂ of the vertical direction It is called "the side." Similarly, "laterally D _C of the breast pads, relatively proximal to the transverse direction of the central axis C ₁ extending transversely D _C and the longitudinal direction D _L located in central of mother milk pad" the called called "lateral inner side", "laterally D _C of the breast pads, relatively distal with respect to the center axis C ₁ of said lateral" and "outer side in the lateral direction" . Further, in this specification, "in plan view, the transverse central axis C ₁ and vertical intersection of the central axis C ₂ of the breast milk pad" referred to as "central portion of the breast-milk pad."
Further, in the present specification, unless otherwise specified, in the thickness direction _DT of the breast milk pad, “relatively proximal to the skin surface of the wearer when the breast milk pad is worn” is defined as “skin facing surface”. “Side”, and “the distal side relative to the skin surface of the wearer when the breast milk pad is attached” is referred to as “the non-skin facing side”. Here, “at the time of wearing” refers to a period during which the wearer maintains the state from when the breast pad is worn (ie, when the wearable state is formed) (ie, while wearing). Further, “when attached / detached” means that the wearer is performing an operation of mounting the breast milk pad or is performing an operation of removing the breast pad that is worn by the wearer.
In the present specification, “surface on the skin facing surface side” and “surface on the non-skin facing surface side” of various members constituting the breast milk pad (for example, inner sheet, absorber, outer sheet, exterior sheet, etc.) May be simply referred to as “skin facing surface” and “non-skin facing surface”, respectively.

FIG. 1 is a perspective view of a breast milk pad 1 according to an embodiment of the present invention as viewed from the exterior sheet side, and FIG. 2 is a perspective view of the breast milk pad 1 in the thickness direction from the inner sheet side in a developed state. FIG. 3 is a plan view of the breast milk pad 1 as viewed in the thickness direction from the exterior sheet side in the unfolded state. Further, FIG. 4, the breast-milk pad 1 of Fig. 2 is an end view of a cross-section along the central axis C ₂ of the longitudinally extending laterally.
As shown in FIGS. 1 to 4, breast pads 1 according to an embodiment of the present invention, in a plan view of a developed state, it has a longitudinal direction D _L and a transverse direction D _C perpendicular to each other, as a whole has an outer shape as is cut in a straight line at both ends of the lateral D _C of the substantially circular shape extending in the longitudinal direction D _L. In the present invention, the outer shape of the breast milk pad is not limited to the outer shape of such a mode, and any outer shape (for example, a circular shape) may be used as long as it can cover the breast of the wearer. , Oval, square with rounded corners, etc.).

As shown in FIGS. 2 to 4, the breast milk pad 1 according to the embodiment of the present invention includes a liquid-permeable inner sheet 2 positioned on the skin facing surface side of the wearer in the thickness direction _DT , A liquid-impermeable outer sheet 3 positioned on the skin facing surface side, and an arbitrary adhesive layer such as a hot-melt adhesive on the skin facing surface side of the outer sheet 3 positioned between these sheets The absorbent body 4 joined via the (first adhesive layer A ₁ ) is provided as a main constituent member. Further, as shown in FIG. 4, this breast milk pad 1 has an arbitrary adhesive layer (second adhesive) such as a hot-melt adhesive on the surface on the non-skin facing surface side of the outer sheet 3 in the thickness direction _DT . outer sheet both ends of the lateral D _C to the both ends in the transverse direction D _C of the joined and the outer sheet 3 so as to cover the non-skin facing side through the layer a ₂₎ is folded back to the skin facing side 5, the outer sheet sandwiched folded portion of 5 and longitudinally D _L to be arranged to extend a pair of elastic members EL (Note that in the present embodiment, the elastic members EL are horizontal to each of the folded portion and the other end portion of the folded portion of one end portion in the direction D _C, and in pairs (total of four) are arranged.), non-skin of the outer sheet 5 disposed on the surface of the opposite side and extending in the longitudinal direction D _L 4 pairs tacky It includes a fastening portion 6 consisting agent, a.
Such a breast milk pad 1 has an inner surface (that is, a surface on the skin facing surface side) of the underwear (for example, a brassiere) of the wearer by a fastening portion 6 disposed on the surface on the non-skin facing surface side of the exterior sheet 5. The inner surface sheet 2 is used in contact with the skin facing surface so as to cover the surface of the breast of the wearer.

In the present embodiment, the breast milk pad 1 has the outer sheet 3 made of a non-woven fabric having air permeability, the absorbent body 4 has a density of 1.30 g / cm ³ or less, and as shown in FIG. the, in plan view, a central region a _C including the center portion of the breast pads 1 (i.e., lateral direction D central axis C ₁ and the longitudinal D intersection of the central axis C ₂ of the _L of _C), the central region and the end region a _E extending so as to surround the a _C, which has a compressed regions a _P including compressing portions P where the absorber 4 is pressed in the thickness direction D _T in the end region a _E We have, have a non-compressed regions a _N which does not include the compressing portion P in the central region a _C.

Breast pads 1 of the present embodiment, in the edge area A _E of the above, the rigidity is increased by having the compressed regions A _P including compressing portions P where the absorber 4 is pressed in the thickness direction D _T are one, in the central region a _C described above, since that is easily adapted to deform to the shape of the breast of the wearer by having a non-compressed regions a _N not including the compressed portion P, when mounted and detachable Occasional deformation such as bending or wrinkles is unlikely to occur, and the curved shape suitable for the shape of the wearer's breast can be maintained to prevent leakage of breast milk due to the above-described deformation. Further, in this breast milk pad 1, the outer sheet 3 is made of a non-woven fabric having air permeability, and the absorbent body 4 has a density of 1.30 g / cm ³ or less. It is possible to exert the sexuality, and it is possible to make it difficult to cause stuffiness between the skin of the wearer.

  Here, the object absorbed by the breast milk pad of the present invention is breast milk mainly discharged from the wearer, but in addition to such breast milk, for example, sweat discharged from the wearer and the breast of the wearer Contains various body fluids such as drooling of babies adhering to. In addition, in this specification, it demonstrates for mother milk for convenience.

  Hereinafter, various members constituting the breast milk pad of the present invention will be described in more detail using the breast milk pad 1 according to the above-described embodiment.

[Inner sheet]
In the above embodiment, the inner sheet 2 for use in breast milk pad 1, as shown in FIGS. 2 and 4, in plan view, and extends in the longitudinal direction D _L and transverse D _C of the breast pads 1 breastfeeding has an outer shape such as both end portions in the lateral direction D _C is cut by a straight line extending in the longitudinal direction D _L of the substantially circular shape similar to the pad 1 as a whole outer shape, the thickness direction D of the breast pads 1 _{At T} , the breast milk discharged from the wearer is disposed on the skin facing surface side where it can come into contact with the skin surface of the wearer (specifically, the skin surface of the wearer's breast). It is comprised by the liquid-permeable sheet-like member which functions so that it may transfer to the absorber 4 located in 1 quickly.
In the present invention, the outer shape of the inner surface sheet is not limited to the outer shape of the specific aspect as described above, and any outer shape (as long as it can cover the breast of the wearer) For example, a circle, an ellipse, a rectangle with rounded corners, etc.) can be employed.

  In the present invention, the liquid-permeable sheet-like member that can be used as the inner sheet is not particularly limited as long as it has a predetermined liquid permeability. For example, an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric (that is, Spunbond / meltblown / spunbond laminated nonwoven fabrics), sheet-like fiber structures such as nonwoven fabrics such as pointbonded nonwoven fabrics, woven fabrics, and knitted fabrics; perforated films with multiple openings in resin films Can be used. The sheet-like fiber structure may be hydrophilized with a surfactant. Among these, from the viewpoint of liquid permeability, strength, flexibility, etc., it is preferable to use a sheet-like fiber structure, and it is more preferable to use an air-through nonwoven fabric or a spunbonded nonwoven fabric.

  Further, when a sheet-like fiber structure is used as the inner sheet, the constituent fibers are not particularly limited. For example, thermoplastic resins such as olefin resins such as polyethylene and polypropylene, and polyester resins such as polyethylene terephthalate and polylactic acid. These resins may be used alone or in combination of two or more resins. The structure of the thermoplastic resin fiber is not particularly limited, and for example, a composite fiber such as a core-sheath fiber, a modified cross-section fiber, a three-dimensional crimped fiber, or the like may be used.

  Furthermore, the thermoplastic resin fiber described above is treated with a surfactant, a hydrophilizing agent, or the like (for example, kneading a surfactant inside the fiber, applying a surfactant to the fiber surface, etc.), etc. These may be subjected to a hydrophilization treatment and may contain any additive such as a deodorant and an antibacterial agent. In addition, these additives may use 2 or more types together.

In the present invention, the basis weight of the liquid-permeable sheet-like member that can be used as the inner sheet is not particularly limited as long as it has predetermined liquid permeability and strength, and, for example, 6 g / m ^{2 to} 60 g / m ^2. in the range of, preferably in the range of ^{10g / m 2 ~40g / m 2} .

  In addition, the structure of the liquid-permeable sheet-like member that can be used as the inner sheet is not particularly limited as long as it has a predetermined liquid permeability. For example, the sheet-like member has a substantially flat structure or skin. A surface having a concavo-convex structure on the surface on the opposite surface side (that is, the surface on the breast milk supply surface side) can be suitably used. The inner surface sheet having a concavo-convex structure on the surface of the breast milk supply surface is excellent in liquid permeability that allows the breast milk to permeate in the thickness direction, and it is difficult for the breast milk to pass through the surface of the inner surface sheet. The breast milk supplied to the surface can be quickly transferred to the absorbent body via the inner sheet, and the leakage of breast milk to the outer side in the surface direction can be made even less likely to occur.

  The shape of the concave-convex structure of the inner surface sheet is not particularly limited as long as it can promote the transfer of breast milk. For example, in a plan view, it extends in a predetermined direction of the inner surface sheet and is orthogonal to the predetermined direction. Constituted by a plurality of linear ridges arranged at predetermined intervals, and a plurality of linear concave grooves located between adjacent ridges and extending in parallel with the ridges, An uneven structure in which the internal structure of the protrusion is hollow or solid; an uneven structure in which a plurality of protrusions such as hemispheres or cylinders are arranged on a substantially flat base; the surface of the inner sheet on the supply surface side Examples include a concavo-convex structure in which convex portions and concave portions are irregularly formed over substantially the whole. The means for forming such a concavo-convex structure is not particularly limited. For example, any shaping method such as a method of spraying a gas (for example, air) continuously on a fiber web, a compression molding method, a gear stretching method, or the like is used. Can be adopted.

  The dimensional shape, thickness, and the like of the liquid-permeable sheet-like member that can be used as the inner sheet are not particularly limited as long as the sheet-like member can function as the inner sheet of the breast milk pad. Any dimensional shape, thickness, or the like according to the strength or the like can be adopted.

[External sheet]
In the above embodiment, the outer sheet 3 used in the breast milk pad 1, in plan view, the longitudinal direction D _L and transverse D _C extending Mashimashi and non-skin facing side surfaces of the absorbent body 4 in the breast pads 1 And has a predetermined outer shape and outer dimensions that can cover most of the breast milk pad, and is disposed on the non-skin-facing surface side of the absorbent body 4 in the thickness direction _DT of the breast milk pad 1 and discharged from the wearer. While preventing permeation of the produced breast milk and preventing the breast milk from leaking into the wearer's underwear, etc., while allowing gas such as water vapor to cause stuffiness to permeate through the breast pad or between the breast pad and the wearer's skin It is comprised by the nonwoven fabric which has a liquid impermeability and air permeability which functions so that the increase in humidity between may be prevented. In the present embodiment, as shown in FIG. 4, the outer sheet 3 includes a part of the surface of the absorbent body 4 on the non-skin facing surface side and an arbitrary adhesive layer such as a hot-melt adhesive (first It is joined via an adhesive layer A ₁ ).
In the present invention, the outer shape of the outer sheet can cover most of the surface of the absorbent body on the non-skin facing surface side (for example, 60% or more of the surface area of the absorbent body on the non-skin facing surface side). Any shape can be adopted as long as it is a shape (for example, a circle, an ellipse, a square with rounded corners, or a shape similar to the inner sheet).

  In the present invention, the liquid-impermeable and breathable nonwoven fabric that can be used as the outer sheet is not particularly limited as long as it has a predetermined breathability and can function to prevent the transmission of breast milk. It is composed of SMS nonwoven fabric, spunbond nonwoven fabric, point bond nonwoven fabric, meltblown nonwoven fabric, 1% or less nonwoven fabric composed of ultrafine fibers, or made of synthetic resin fibers that are waterproof or hydrophobic. Any non-woven fabric such as a non-woven fabric including a fibrous layer or a non-woven fabric subjected to a densification treatment by heating or pressurization can be used. Among these nonwoven fabrics, it is particularly preferable to use an SMS nonwoven fabric. The SMS nonwoven fabric has a breathability and a certain strength (particularly due to the spunbond layer), and can more effectively suppress the exudation of breast milk (especially by the meltblown layer, which is an ultrafine fiber layer). Therefore, when such a non-woven fabric is used as the outer sheet, it is possible to more effectively and stably suppress the milk exudation while ensuring a certain air permeability and strength in the outer sheet.

  Further, the constituent fibers of the nonwoven fabric constituting the outer sheet are not particularly limited as long as they do not impair the breathability and liquid impermeability of the nonwoven fabric. For example, polyolefin fibers such as polyethylene and polypropylene; polyesters such as polyethylene terephthalate Hydrophobic thermoplastic resin fibers such as system fibers and composite fibers can be used.

In the present specification, the air permeability of the outer sheet, the outer sheet, and the breast milk pad can be determined by using an arbitrary air permeability tester (for example, a fragile air permeability tester manufactured by Daiei Kagaku Seisakusho Co., Ltd.) according to JIS. It can evaluate by the air permeability (cm < ³ > / cm < ² > s) measured by the method based on the Frazir method of L1096A.

  Moreover, in this invention, it is preferable that an outer surface sheet has a fiber density of the nonwoven fabric which comprises the said outer surface sheet larger than the fiber density of the nonwoven fabric which comprises the exterior sheet mentioned later. Thus, when the fiber density of the nonwoven fabric constituting the outer sheet is larger than the fiber density of the nonwoven fabric constituting the outer sheet, the outer sheet and the outer sheet even if the mother's milk absorbed by the absorbent has oozed out from the absorbent body Is more likely to be retained in the outer sheet than the exterior sheet (specifically, between the constituent fibers of the nonwoven fabric constituting the outer sheet). It can be made difficult to leak outside.

  Here, the comparison of the fiber density of each non-woven fabric is performed by magnifying and observing an arbitrary portion of each non-woven fabric for comparing the fiber density with a scanning electron microscope or the like at a magnification of about 20 to 100 times. This can be determined visually from the number of hit fibers.

In this invention, the basic weight of the nonwoven fabric which can be used as an outer sheet | seat is not restrict | limited especially unless the effect of this invention is inhibited, Arbitrary basic weights which considered air permeability, liquid impermeability, etc. are employable. Such basis weight, for example, include a basis weight in the range of ^{8g / m 2 ~60g / m 2} , preferably in the range of ^{10g / m 2 ~30g / m 2} .

  Furthermore, the thickness of the nonwoven fabric that can be used as the outer sheet is not particularly limited as long as the effect of the present invention is not impaired. For example, a thickness in the range of 0.01 mm to 5.0 mm can be adopted, but air permeability From the viewpoint of liquid impermeability and the like, it is preferably in the range of 0.05 mm to 3.0 mm. In addition, the dimension shape of the nonwoven fabric that can be used as the outer sheet is not particularly limited as long as the nonwoven fabric can function as the outer sheet of the breast milk pad, and any dimension shape according to the desired liquid impermeability, etc. Can be adopted.

[Absorber]
In the above embodiment, the absorber 4 used in the breast milk pad 1, as shown in FIG. 2, in plan view, the longitudinal direction D _L and and whole milk pad 1 extends in the transverse direction D _C of the breast pads 1 lateral D _C both ends and having a longitudinal direction D outline shape as is cut by a straight line extending in the _L of the small outer dimensions slightly larger than the outer dimensions of the breast-milk pad 1 of substantially circular shape similar to the outer shape of the And is disposed between the inner sheet 2 and the outer sheet 3 in the thickness direction _DT of the breast milk pad 1 and functions to absorb and hold the breast milk that has passed through the inner sheet 2. It is comprised by the sex member.
In the present invention, the outer shape of the absorber is not limited to the outer shape of the specific mode as described above, and any outer shape can be used as long as it can sufficiently absorb and hold the breast milk discharged from the wearer. A shape (for example, a circle, an ellipse, a rectangle with rounded corners, etc.) can be employed.

Moreover, in the said embodiment, the absorber 4 is arrange | positioned so that it may extend over the edge part area | region _AE from the center area | region including the center part of the breast milk pad 1 in planar view, and it is hydrophilic, such as a pulp. Absorbent core 41 made of an absorbent material made of a mixture of conductive fibers and water-absorbent resin granules, and a skin-facing surface-side core disposed so as to cover the skin-facing surface-side surface of the absorbent core 41 The non-skin facing which is arranged so as to cover the wrap sheet 42 and the surface of the absorbent core 41 on the non-skin facing side and wrap the absorbent core 41 and the core wrap sheet 42 from the non-skin facing side of the absorbent core 41 It is comprised by the absorptive member containing the core wrap sheet | seat 43 of the surface side.

In the present invention, the absorber has a density of 1.30 g / cm ³ or less. When the absorbent body has such a low density, it is possible to ensure a predetermined air permeability even in the absorbent body, so that the outer sheet is composed of an air permeable nonwoven fabric, and a breast milk pad The whole can exhibit good air permeability, and as a result, it is possible to make it more difficult to cause stuffiness with the wearer's skin. The lower limit of the density of the absorber is not particularly limited as long as it can function as an absorber, but the absorber preferably has a density of 0.01 g / cm ³ or more.

In this specification, the density of an absorber can be calculated based on the following equation.
D (g / cm ³ ) = B (g / m ² ) / T (mm) × 10 ⁻³
[Wherein D, B and T represent the density, basis weight and thickness of the absorbent core, respectively. ]

Here, the basis weight B (g / m ² ) of the absorber can be measured as follows.
(1) Three sample pieces of a predetermined size (for example, 30 mm × 30 mm) are cut out from any three locations of the absorber to be measured, and in a standard state (temperature 23 ± 2 ° C., relative humidity 50 ± 5%) The mass (g) of each sample piece is measured with a direct balance (for example, an electronic balance HF-300 manufactured by Kensei Kogyo Co., Ltd.).
(2) The average value of the masses of the measured sample pieces is calculated, and the average value is divided by the area (m ² ) of the sample pieces, thereby calculating the mass per unit area of the absorber. Let the mass per unit area of the calculated absorber be the basis weight B (g / m ² ) of the absorber.
In addition, regarding the measurement of the basis weight of the absorber, the measurement conditions described in ISO 9073-1 or JIS L 1913 6.2 are adopted for conditions other than the above-described measurement conditions.

Moreover, the thickness T (mm) of an absorber can be measured as follows.
Using an arbitrary thickness meter (for example, FS-60DS manufactured by Daiei Scientific Instruments Co., Ltd., measuring surface 44 mm (diameter), measuring pressure 3 g / cm ² ), standard conditions (temperature 23 ± 2 ° C., relative humidity 50 ±). 5%) is pressed at a constant pressure of 3 g / cm ² and the thickness (mm) after 10 seconds of pressurization at each location is measured. Let the average value of the measured thickness of five places be thickness T (mm) of an absorber.

  In the present invention, the density of the absorbent can be obtained within a desired range by appropriately adjusting the amount and density of the absorbent material made of a mixture of hydrophilic fibers and water-absorbent resin, for example. .

Moreover, in the above-described embodiment, the absorbent body 4 has the absorbent body 4 in the thickness direction D _T at a portion corresponding to the end region _AE of the breast milk pad 1 in plan view, as shown in FIG. It has a plurality of compressed parts P. In this embodiment, compression portions P of the plurality of, as shown in FIG. 2, in plan view, both ends in the longitudinal direction D _L of the longitudinal direction D _L along the extending and absorber 4 of breast pads 1 while from the edge parts are disposed so as to extend to a predetermined portion of the inner side of the longitudinal direction D _L, the portion corresponding to the central region a _C of the breast pads 1, compressing portions P are arranged It has not been.
When compressing portions P are arranged in this manner, the end region A _E breastfeeding pad 1, while the stiffness is increased by having compressed regions A _P including the compressing portion P of the above, the center of the breast-milk pad 1 area a _C, since easily adapted to deform to the shape of the breast of the wearer by having a non-compressed regions a _N without the compressing portion P of the above, breast pads 1 are inadvertently when mounted upon and removable It is easy to maintain a curved shape that conforms to the shape of the wearer's breast and prevents leakage of breast milk due to the above-mentioned inadvertent bending or deformation of the wrinkles. it can.

Further, in the above-described embodiment, breast pads 1, as shown in FIG. 2, not only the central region A _C, in the lateral direction in the edge area A _E central axis C ₁ and on the vicinity, as well as the longitudinal direction of the also in each of the central axes C ₂ above and in the vicinity thereof, because it does not contain a compressed portion P of the above, it is possible to accurately conform to the shape of the breast of the wearer around the central portion of the breast-milk pad 1.

In addition, in this invention, the means in particular which forms the above-mentioned pressing part in an absorber is not restrict | limited, Arbitrary pressing means, such as embossing, can be employ | adopted.
Moreover, in this invention, the aspect (for example, the pattern in which a pressing part is arrange | positioned, the direction where a pressing part extends, the dimension shape of a pressing part, etc.) is not restrict | limited especially, unless the effect of this invention is inhibited, for example, Any aspect such as the aspect disclosed in Japanese Patent Application Laid-Open No. 2007-327158 can be adopted.

Further, in the present invention, the absorbent member that can be used as the absorbent is not particularly limited as long as it can absorb and retain liquid such as breast milk, and the absorbent material as in the above-described embodiment. Examples thereof include those in which the absorbent core is covered with one or more core wrap sheets such as a hydrophilic tissue. Examples of the absorbent material that constitutes the absorbent core include hydrophilic fibers and water-absorbent resins. More specifically, cellulose fibers such as pulverized pulp and cotton; regenerated cellulose fibers such as rayon and fibrillar rayon; Semi-synthetic cellulose fibers such as acetate and triacetate; Granules made of water-absorbent resin such as sodium acrylate copolymer or granules made of water-absorbent resin composition containing the water-absorbent resin, and any combination of these two or more Is mentioned.
Among such various absorptive materials, the absorptive material used for the absorbent body of the breast milk pad of the present invention comprises a water-absorbing resin that is a polymer of a water-soluble ethylenically unsaturated monomer, and a wetting accelerator. It is preferable to use a specific water-absorbing resin composition that satisfies the following requirements (A) to (D).
(A) The physiological saline water retention capacity is 38 to 44 g / g.
(B) The 5-minute value of the non-pressurized DW is 50 mL / g or more (C) The 60-minute value of the non-pressurized DW is 60 mL / g or more (D) The physiological saline flow rate is 5 g / min or more

When the absorbent material used for the absorbent body is the above-mentioned specific water-absorbent resin composition, since the water-absorbent resin composition is less susceptible to gel blocking after water absorption, even after the breast milk pad has absorbed the milk. Further, the air permeability in the absorbent body can be ensured to a certain level or more, and as a result, a 2 g water absorption air permeability of 10 cm ³ / cm ² · s or more can be obtained as a breast milk pad. Thereby, the mother's milk pad provided with this absorber can make it more difficult to produce the stuffiness between the wearer.

In the present invention, the air permeability of the breast pad when absorbing water is 10 cm ³ / cm ² · s or more when absorbing 10 g (that is, the air permeability when absorbing 10 g is 10 cm ³ / cm ² · s or more). Further preferred. If the breast pad has a water permeability of 10 cm ³ / cm ² · s or more when it absorbs 10 g ³ / cm ² · s or more, even when the wearer has a large amount of milk (eg 10 g), it can ensure a certain level of air permeability. It is possible to more reliably prevent the steaming with the person from occurring.

Here, the air permeability at the time of water absorption of the breast milk pad means the air permeability of the breast milk pad after a predetermined amount (for example, 2 g, 5 g, 10 g, etc.) of physiological saline is absorbed. The hourly air permeability means the air permeability of the breast milk pad after absorbing 10 g of physiological saline.
The water absorption rate of the breast milk pad is determined by dropping a predetermined amount of physiological saline on the breast milk pad to be measured and allowing it to stand at room temperature for 30 minutes, and then using an arbitrary air permeability tester (for example, Daiei Kagaku Co., Ltd.). It can be measured by a method based on the Frazier method of JIS L1096A using a Fragile type air permeability tester manufactured by Seiki Seisakusho. As the physiological saline used for the measurement of the water permeability and the air permeability, one having a temperature similar to room temperature is used.

In the present invention, the specific water-absorbent resin composition that can be used as the absorbent material of the absorber includes a water-absorbent resin that is a polymer of a water-soluble ethylenically unsaturated monomer and a wetting accelerator. And if it satisfy | fills the requirements of said (A)-(D), it will not restrict | limit in particular, What has arbitrary compositions can be used. For example, the water-soluble ethylenically unsaturated monomer has (meth) acrylic acid and its salt, (meth) acrylamide, from the viewpoint that the effects exhibited by the water-absorbent resin composition are more advantageously exhibited. N, N-dimethyl (meth) acrylamide and the like can be suitably used, and these water-soluble ethylenically unsaturated monomers may be used alone or in combination of two or more.
The polymerization method of the water-soluble ethylenically unsaturated monomer is not particularly limited, and any polymerization method such as a reverse phase suspension polymerization method, an aqueous solution polymerization method, a bulk polymerization method, or a precipitation polymerization method can be employed. . Among these polymerization methods, the water-absorbing performance of the resulting water-absorbent resin is high, and the reverse-phase suspension polymerization method and the aqueous solution polymerization method are preferable from the viewpoint that the polymerization is easy to control. More preferred is a multistage polymerization process.
Further, the water-soluble radical polymerization initiator that can be used for this polymerization is not particularly limited, but from the viewpoint of obtaining better water absorption performance, the water-soluble radical polymerization initiator is 2,2′-azobis (2-amidinopropane). Dihydrochloride, 2,2′-azobis {2- [1- (2-hydroxyethyl) -2-imidazolin-2-yl] propane} dihydrochloride, 2,2′-azobis [N- (2-carboxy) Ethyl) -2-methylpropionamidine] tetrahydrate can be suitably used, and these water-soluble radical polymerization initiators may be used alone or in combination of two or more.

  The wetting accelerator used in the specific water-absorbing resin composition is not particularly limited. For example, hydrophilic inorganic fine powders such as silicon dioxide, titanium oxide, aluminum oxide and zeolite; glycerin, pentaerythritol and the like Polyhydric alcohol compounds; hydrophilic polymer fine powder having a viscosity average molecular weight of 10,000 or less, such as polyethylene glycol, polyvinyl alcohol, and polyacrylate can be used. Among these, hydrophilic inorganic fine powders are preferable, and silicon dioxide, titanium oxide, aluminum oxide, and zeolite are more preferable from the viewpoint of achieving both an excellent non-pressurized DW and an excellent flow rate. These wetting accelerators may be used alone or in combination of two or more. In addition, the addition amount of a wetting accelerator is preferably in the range of 0.1 to 3 parts by mass, more preferably in the range of 0.2 to 2 parts by mass with respect to 100 parts by mass of the water-absorbing resin.

  The mixing method of the wetting accelerator and the water-absorbing resin is not particularly limited. For example, the wetting accelerator is added to the water-absorbing resin as a solution in a powder state or dissolved in a solvent or the like, and an arbitrary mixing device is used. Can be mixed.

  The specific water-absorbing resin composition may further contain other additives for the purpose of imparting other functions. Examples of such additives include antibacterial agents and deodorants.

Thus, the specific water absorbing resin which satisfy | fills the requirements of the following (A)-(D) by adding a wetting accelerator to the water absorbing resin which is a polymer of a water-soluble ethylenically unsaturated monomer. A composition can be obtained.
(A) The physiological saline water retention capacity is 38 to 44 g / g.
(B) The 5-minute value of the non-pressurized DW is 50 mL / g or more (C) The 60-minute value of the non-pressurized DW is 60 mL / g or more (D) The physiological saline flow rate is 5 g / min or more

  Here, the “saline retention ability” of the water-absorbent resin composition is 38 g / g or more from the viewpoint of increasing the absorption capacity of the breast milk pad, and preferably 39 g / g or more, while preventing gel blocking. To 44 g / g or less, preferably 43 g / g or less. In addition, the physiological saline water retention capacity of the water-absorbent resin composition can be measured according to the following <Measurement method of physiological saline water retention capacity>.

<Measurement method of physiological saline water retention ability>
(1) In a 500 mL beaker, 500 g of physiological saline (0.9 mass% sodium chloride aqueous solution) is weighed, and 2.00 g of the water-absorbent resin composition to be measured is dispersed while stirring at 600 rpm. .
(2) After being allowed to stand for 30 minutes with stirring, the water-absorbent resin composition is sufficiently swollen, and then the contents of the beaker (swelling gel) are placed in a cotton bag (No. 6060, width 100 mm × length 200 mm). And saline), and tie the upper part of the cotton bag with a rubber band.
(3) Using a dehydrator (product number: H-122, manufactured by Kokusan Centrifuge Co., Ltd.) set so that the centrifugal force is 167G, the cotton bag is dehydrated for 1 minute, and the cotton containing the swollen gel after dehydration The mass Wa (g) of the bag is measured.
(4) By performing the same operation as in the above (1) to (3) without adding the water absorbent resin composition, the empty mass Wb (g) when the cotton bag is wet is measured, and Calculate the saline retention capacity.
Saline retention capacity (g / g) = [Wa-Wb] (g) /2.00 (g)

  Further, the “5-minute value of non-pressurized DW” of the water absorbent resin composition is 50 mL / g or more from the viewpoint of increasing the initial absorption rate of the absorbent body using the water absorbent resin composition, and 53 mL / g. While the above is preferable, 100 mL / g or less is preferable and 90 mL / g or less is more preferable from the viewpoint of suppressing the occurrence of liquid leakage (breast milk leakage). Further, the “60-minute value of non-pressurized DW” of the water-absorbent resin composition is 60 mL / g or more from the same point as the above-mentioned 5-minute value, and preferably 63 mL / g or more, but occurrence of liquid leakage 110 mL / g or less is preferable from the point which suppresses, and 100 mL / g or less is more preferable. In addition, the 5-minute value of the non-pressurized DW and the 60-minute value of the non-pressurized DW of the water absorbent resin composition can be measured according to the following <Measurement method of the non-pressurized DW>.

<Measurement method of pressureless DW>
(1) A non-pressurized DW measuring device comprising a burette part, a conduit, a measuring table, a nylon mesh sheet, a gantry, and a clamp is prepared.
Specifically, the burette part has a rubber stopper attached to the upper part of the buret that is graduated every 0.2 mL from 0 to 100 mL from the upper side, and an air introduction pipe and a cock are connected to the lower part. After connecting the cock to the lower end of, fix it to the clamp. Further, a conduit with an inner diameter of 6 mm is attached between the burette portion and the measurement table, and after the conduit is connected to a hole with a diameter of 2 mm formed at the center of the measurement table, the measurement table is supported by the gantry.
(2) In a room with a temperature of 25 ± 1 ° C and a humidity of 60 ± 10%, physiological saline adjusted to 25 ± 1 ° C is supplied into the burette with the upper rubber stopper removed, and the conduit is liquid-sealed. In the meantime, the physiological saline is filled so as not to include air bubbles from the connection portion of the burette portion with the conduit to the upper portion of the burette portion scale. At this time, the physiological saline is prevented from entering the air introduction tube.
(3) After sealing the upper part of the burette with a rubber stopper, the cock connected to the air inlet pipe and the cock connected to the tip of the lower part of the burette are opened, and the physiology coming out from the conduit port at the center of the measurement table Adjust the height of the measurement table so that the surface of the saline solution and the upper surface of the measurement table are at the same height. After this adjustment, read the bullet scale and check the zero point.
(4) A nylon mesh sheet (100 mm × 100 mm, 250 mesh, thickness of about 50 μm) is prepared, and a cylinder having an inner diameter of 30 mm is placed in the center.
(5) 1.00 g of the water-absorbent resin composition to be measured is weighed out, and after the entire amount is uniformly put into the cylinder, the cylinder is carefully removed.
(6) The nylon sheet with the water-absorbing resin composition dispersed in the central part in this way is quickly moved onto the conduit port of the measuring table so that the water-absorbing resin composition does not dissipate, and measurement is started. The time when the first bubble generation from the air inlet tube to the burette can be confirmed is the water absorption start time.
(7) The amount of decrease in physiological saline in the burette (that is, the amount of physiological saline absorbed by the water absorbent resin composition) is sequentially read, and the amount of physiological saline decreased after 5 minutes from the start of water absorption of the water absorbent resin composition. The minute Wc (mL) is read as the value of the non-pressurized DW per 1.00 g of the water-absorbent resin composition, and the value of the non-pressurized DW for 5 minutes is determined by the following formula.
No pressure DW for 5 minutes (mL / g) = Wc / 1.00
(8) Similarly, the reduced amount Wd (mL) of physiological saline 60 minutes after the start of water absorption of the water absorbent resin composition is defined as the value of non-pressurized DW per 1.00 g of the water absorbent resin composition. Read and obtain the value of no pressure DW for 60 minutes by the following formula.
60 minutes no pressure DW (mL / g) = Wd / 1.00
(9) In addition, the measurement of the above-mentioned non-pressurized DW is performed 5 times with respect to one type of water absorbent resin composition, and an average value of three points excluding the minimum value and the maximum value is adopted.

  Furthermore, the “physiological saline flow rate” of the water-absorbent resin composition is 5 g / min or more from the viewpoint of enhancing liquid diffusibility in a breast milk pad using the water-absorbent resin composition, and is 6 g / min or more. On the other hand, it is preferably 20 g / min or less and more preferably 15 g / min or less from the viewpoint of suppressing the occurrence of liquid leakage (breast milk leakage). In addition, the physiological saline flow rate of the water absorbent resin composition can be measured according to the following <Measurement method of physiological saline flow rate>.

<Measurement method of physiological saline flow rate>
(1) The physiological saline flow rate is measured by a cylindrical container made of plexiglass having an inner diameter of 19 mm, an outer diameter of 25 mm, a height of 120 mm, and a weight of about 30 g, to which a nylon mesh sheet (250 mesh) is bonded. A measuring part constituted by (A) and a cylindrical container (B) made of Plexiglas having an inner diameter of 26 mm, an outer diameter of 40 mm, and a height of 80 mm, to which a nylon mesh sheet similar to the above is bonded, and a swelling gel, The measurement is carried out using a measuring apparatus in which a size of 100 mm × 100 mm is placed on a wire mesh having a 2 mm square grid-like opening, and a petri dish having an inner diameter of about 90 mm is placed under the wire mesh. This measurement is performed at room temperature of about 25 ° C.
(2) First, 0.20 g of the water-absorbent resin composition classified in advance into a size of 250 μm to 500 μm is uniformly placed in the cylindrical container (B), and measurement is performed by inserting the cylindrical container (A) from above. Forming part. The mesh side of the measurement part is immersed in a petri dish containing an appropriate amount of physiological saline and swollen for 30 minutes to form a swollen gel.
(3) Next, the entire measurement unit is moved onto an empty petri dish, and a 200 g weight is slowly placed on top of the cylindrical container (A), and the swollen gel is loaded for 3 minutes.
(4) On a petri dish (We) whose empty mass has been measured in advance, a wire mesh having a mesh opening of 2 mm is placed, and a measuring unit containing a swollen gel is further placed.
(5) Next, the stopwatch is started simultaneously with the addition of physiological saline from the upper part of the cylindrical container (A). Thereafter, until the measurement is completed, physiological saline is appropriately added so that the liquid level is within a range of 6 to 7 cm from the lower end of the cylindrical container (A).
(6) Measure the mass (Wf) of the petri dish containing physiological saline that has flowed out through the swollen gel until 30 seconds (0.5 minutes) have passed since the physiological saline was added. g / min) is obtained by the following equation.
Flow rate (g / min) = (Wf−We) /0.5

  Specific examples of the specific water-absorbent resin composition that can be used for the absorbent body of the breast milk pad of the present invention and specific conditions in the method for measuring each physical property value are described in JP-A-2016-121297. The disclosed one can be suitably employed.

Moreover, in this invention, the thickness of an absorber is not restrict | limited especially unless the effect of this invention is inhibited, For example, in the above-mentioned pressing part, it exists in the range of 2.0 mm-5.0 mm, The said pressing In parts other than a part, it exists in the range of 3.0 mm-6.0 mm.
The size and shape of the absorbent body are not particularly limited as long as the absorbent body can function as an absorbent body of a breast milk pad, and an arbitrary size and shape according to desired absorbent performance, strength, and the like are adopted. be able to.

[Exterior sheet]
In the above embodiment, the outer sheet 5 used in the breast milk pad 1, as shown in FIGS. 3 and 4, in plan view, and extends in the longitudinal direction D _L and transverse D _C of the breast pads 1 breastfeeding has an outer shape such as both end portions in the lateral direction D _C is cut by a straight line extending in the longitudinal direction D _L of the substantially circular shape similar to the pad 1 as a whole outer shape, the thickness direction D of the breast pads 1 _{At T} , the outer sheet 3 is bonded to the surface on the non-skin facing surface side via an arbitrary adhesive layer (second adhesive layer A ₂ ) such as a hot-melt adhesive, and the lateral direction D _{C of the} outer sheet 3. both end portions of the lateral D _C is folded back to the skin facing side so as to cover the both end portions from the non-skin facing side of the. The exterior sheet 5 is configured by a sheet-like member having liquid impermeability and air permeability that functions to delimit the outer shape of the breast milk pad 1 while preventing leakage of breast milk discharged from the wearer. .
Since the breast milk pad 1 of the present embodiment includes the breathable exterior sheet 5 positioned on the non-skin facing surface side of the outer sheet 3 in the thickness direction _DT , leakage of breast milk while ensuring a constant breathability Can be prevented more reliably. In the present invention, the outer shape of the outer sheet is not limited to the outer shape of the specific aspect as described above, and can be any shape that can define the outer shape of the breast milk pad while preventing leakage of breast milk. Any external shape (for example, a circle, an ellipse, a square with rounded corners, etc.) can be adopted.

  Further, in the present invention, the sheet-like member having liquid impermeability and air permeability that can be used as an exterior sheet is not particularly limited as long as the effect of the present invention is not hindered. Any sheet-like member such as an apertured film having a plurality of apertures formed by molding a synthetic resin material can be used. In addition, this exterior sheet may be comprised from one sheet-like member, or may be comprised from two or more sheet-like members.

The thickness, basis weight, etc. of the exterior sheet are not particularly limited as long as the effects of the present invention are not impaired, and any thickness, basis weight, etc. according to the desired liquid impermeability, flexibility, etc. may be adopted. can, for example, basis weight in the range of ^{5g / m 2 ~60g / m 2} , preferably in the range of ^{8g / m 2 ~30g / m 2} .
Moreover, since it is not an essential constituent requirement in the breast milk pad of the present invention to have such an exterior sheet, for example, when the above-described outer sheet can also function as an exterior sheet, Such an exterior sheet may not be provided.

[Adhesive layer]
In the above embodiment, as shown in FIG. 4, the breast milk pad 1 extends in the longitudinal direction D _L (an example of the first direction) between the absorbent body 4 and the outer sheet 3, and the lateral direction D _C (second direction). one example) to be arranged first adhesive layer a ₁ a plurality of aligned of, while the absorbent member 4 and the outer sheet 3 described above are joined, between the outer sheet 3 and the outer sheet 5, the vertical It is and disposed a plurality of second adhesive layer a ₂ arranged in a lateral direction D _C extending in the direction D _L, and the outer sheet 3 and the outer sheet 5 of the above are bonded.
Then, in the present embodiment, as shown in FIG. 4, the horizontal direction D the first adhesive layer A ₁ distance between adjacent _C is laterally D _C on the second adhesive layer A ₂ adjacent to each other to be narrower than the interval, the plurality of first adhesive layer a ₁ and a plurality of second adhesive layer a ₂ described above are arranged.

In addition, in this invention, the arrangement | positioning aspect of a 1st adhesive bond layer and a 2nd adhesive bond layer is not limited to the aspect of the above-mentioned embodiment, The arbitrary arrangement | positioning aspects which considered desired joint strength, air permeability, etc. are employ | adopted. However, for the following reasons, the arrangement mode of these adhesive layers is preferably the mode of the above-described embodiment. That is, in general, when a laminate in which two or more layers are laminated via a plurality of adhesive layers arranged in a plane direction at a predetermined arrangement interval is bent, the inner layer having a large curvature tends to be wrinkled, Although the outer layer having a small curvature is tensioned and easily stretched, the breast milk pad 1 according to the above-described embodiment is the first adhesive layer A ₁ disposed between the absorbent body 4 and the outer sheet 3. Since the arrangement interval is narrower than the arrangement interval of the second adhesive layer A ₂ arranged between the outer sheet 3 and the exterior sheet 5, the arrangement interval is curved to fit the shape of the wearer's breast. also, by the first adhesive layer a ₁ described above are closely spaced, relatively inward (i.e., skin-facing surface side) wrinkle is hardly more outer sheet 3 that is located on one, above the second adhesive layer a ₂ of are widely spaced Thus, the outer sheet 5 positioned relatively outside (that is, the non-skin facing surface side) is less likely to be stretched by tension, and the breast pad 1 is more curved to match the shape of the wearer's breast. It can be made easier to maintain. Thereby, the breast milk pad 1 of this embodiment can make it harder to produce inadvertent bending, wrinkles and the like during attachment and detachment, and the above-described first adhesive layers A ₁ and by the second adhesive layer a ₂ more are arranged at a predetermined interval, respectively, it is possible to ensure good breathability.

  In addition, in this invention, the direction (namely, 1st direction) where each above-mentioned adhesive bond layer is extended is not limited to the vertical direction of a breast milk pad like the above-mentioned embodiment, According to a wearer's breast shape It can be set in any direction, such as a direction that curves more greatly.

  In the present invention, the adhesive that can form each of the above-mentioned adhesive layers is not particularly limited, and any adhesive known in the art can be used. Examples of such an adhesive include styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene-butylene-ethylene copolymer (SEBS). The hot-melt type adhesive is mentioned.

Further, in the present invention, the coating amount and the coating form of an adhesive is not particularly limited as long as it does not inhibit the effects of the present invention, any coating amount ^{(e.g., 0.1g / m 2 ~10g / m} 2 ) And coating forms (for example, a plurality of straight lines, strips, spirals, zigzags, etc.) can be employed.

  In the present specification, the interval between the adhesive layers adjacent to each other in the second direction in the plurality of adhesive layers extending in the predetermined first direction and arranged in the second direction orthogonal to the first direction is defined as the first direction. It means the distance between the central imaginary straight lines in the second direction in each adhesive layer extending in the direction.

[Elastic member]
In the above embodiment, breastfeeding pad 1, as shown in FIG. 4, a pair of elastic members EL arranged to extend sandwiched between and longitudinally D _L to folded portions of the outer sheet 5 (Note in the present embodiment, the elastic member EL is in each folded portion and the other end portion of the folded portion of one end of the transverse direction D _C, in pairs (total of four) is arranged The breastfeeding pad 1 is easily deformed into a dome-shaped curved shape in which the central portion of the breastmilk pad 1 is convex toward the underwear side due to the contraction force of the elastic member EL. Yes. Thereby, even if a wearer moves, the breast milk pad 1 of this embodiment is easy to maintain the curved shape suitable for the shape of the wearer's breast, and leakage of breast milk is less likely to occur.

The material for forming such an elastic member is not particularly limited, and for example, any elastic material such as natural rubber or synthetic rubber can be adopted.
Moreover, the dimension shape, arrangement | positioning form, etc. of this elastic member are not restrict | limited in particular, Arbitrary dimension shapes, arrangement | positioning forms etc. according to the ease of deformation | transformation of a breast milk pad, etc. are employable.

[Fastening part]
In the above embodiment, fastening part 6 including the pressure-sensitive adhesive or the like disposed on the surface of the non-skin facing side of the outer sheet 5, as shown in FIG. 1, 3 and 4, extending in the longitudinal direction D _L They are arranged in a stripe shape so as to be arranged at predetermined intervals in Mashimashi and laterally D _C. In the present embodiment, fastening portion 6, the fastening portion of a pair of longitudinally extending D _L as one set, a predetermined interval secured portion 6 of the four pairs of laterally D _C Are arranged. When the wearer wears the breast pad 1 against the breast, the fastening portion 6 removably fixes the surface of the breast pad 1 on the non-skin facing surface side to the inner surface of the underwear such as a brassiere. Therefore, it has moderate adhesive strength.
In addition, in this invention, the arrangement | positioning form of a fixing | fixed part is not limited to the specific form like the above-mentioned embodiment, In addition to the above-mentioned stripe form, one or more spiral form, intermittent form, dot form It can arrange | position with arbitrary forms, such as.

Here, Fig.5 (a) is a top view for demonstrating the positional relationship of the pressing part in the breast milk pad 1, and a fastening part, FIG.5 (b) is virtual quadrilateral Vq shown to Fig.5 (a). It is a schematic diagram for demonstrating these four corners. In FIG. 5A, the description of the constituent members other than the absorber 4 and the fastening portion 6 is omitted for the sake of simplicity.
In the above-described embodiment, the fastening portion 6 is positioned at the four corners Vc of the virtual quadrilateral Vq that is inscribed in the plan view shape of the absorbent body 4 and overlaps all the compressed portions P, as shown in FIG. and each of the compression unit P _C, is arranged to have a portion overlapping in the thickness direction D _T.

  Note that the four corners Vc of the virtual quadrilateral Vq that are inscribed in the plan view shape of the absorber 4 and overlap with all the compressed parts P are respectively connected to the four sides of the virtual quadrilateral Vq, as shown in FIG. When divided into four equal parts, a triangular area formed by connecting each equal dividing point closest to the vertex Va on two sides extending from one vertex Va and the vertex Va with a straight line (FIG. 5 ( (b) indicates a hatched area).

  The breast milk pad 1 of the present embodiment is a compressed portion located at a portion where unintentional bending or wrinkle deformation is likely to occur during attachment or detachment (ie, the compressed portion Pc located at the four corners Vc of the virtual quadrilateral Vq). Since the above-mentioned fastening part 6 is arranged so as to overlap with each of the above, the fastening part 6 is fixed to the underwear of the wearer, so that the above-described inadvertent bending, wrinkles and the like are deformed. It can be made more difficult to occur.

  In the present invention, the fastening portion disposed on the non-skin facing surface of the breast pad is not particularly limited as long as the breast pad can be detachably fixed to the inner surface of the wearer's underwear, For example, any fixing means such as an adhesive such as a styrene polymer or a hook-and-loop fastener can be used. In addition, since it is not an indispensable constituent element in the breast milk pad of the present invention to arrange such a fastening part, such a fastening part does not have such a fastening part depending on how the breast milk pad is used. May be.

  The breast milk pad of the present invention is not limited to the above-described embodiment and the like, and can be appropriately combined, substituted, changed and the like within the scope not departing from the object and spirit of the present invention. In this specification, ordinal numbers such as “first” and “second” are used to distinguish items with the ordinal numbers, and mean the order, priority, importance, etc. of each item. Not what you want.

1 breast pads 2 inner sheet 3 outer sheet 4 absorbent 41 absorbs core 42 core wrap sheet 43 core wrap sheets 5 outer sheet 6 fastener part A _C the central region A _E end region A _P compressed regions A _N non compressed regions A ₁ 1st adhesive layer A ₂ 2nd adhesive layer P pressing part

Claims (6)

A liquid-permeable inner sheet having a longitudinal direction, a lateral direction, and a thickness direction orthogonal to each other and positioned on the skin facing surface side in the thickness direction, and a liquid positioned on the non-skin facing surface side in the thickness direction A breast milk pad comprising an impermeable outer sheet and an absorbent body positioned between the sheets,
The outer sheet is made of a breathable nonwoven fabric,
The absorber has a density of 1.30 g / cm ³ or less;
Further, the breast pad has a central region including a central part of the breast pad and an end region extending so as to surround the central region in plan view, and the end region The absorbent body has a compressed region including a compressed portion compressed in the thickness direction, and has a non-compressed region that does not include the compressed portion in the central region.
The breast milk pad. The breast milk pad further comprises a breathable exterior sheet located on the non-skin facing surface side of the outer sheet in the thickness direction,
Between the absorber and the outer surface sheet, a plurality of first adhesive layers arranged in a second direction extending in a predetermined first direction and orthogonal to the first direction are disposed,
Between the outer sheet and the exterior sheet, a plurality of second adhesive layers extending in the first direction and arranged in the second direction are disposed,
The breast milk pad according to claim 1, wherein an interval between the first adhesive layers adjacent in the second direction is narrower than an interval between the second adhesive layers adjacent in the second direction. The exterior sheet is made of a non-woven fabric having air permeability,
The breast milk pad according to claim 2, wherein the fiber density of the outer sheet is greater than the fiber density of the exterior sheet. The absorber is a water-absorbent resin composition comprising a water-absorbent resin that is a polymer of a water-soluble ethylenically unsaturated monomer and a wetting accelerator, and the following requirements (A) to (D) Including the water absorbent resin composition satisfying
The breast milk pad according to any one of claims 1 to 3, wherein a permeability of the breast milk pad when 2 g is absorbed is 10 cm ³ / cm ² · s or more.
(A) The physiological saline water retention capacity is 38 to 44 g / g.
(B) The 5-minute value of the non-pressurized DW is 50 mL / g or more (C) The 60-minute value of the non-pressurized DW is 60 mL / g or more (D) The physiological saline flow rate is 5 g / min or more The breast milk pad according to claim 4, wherein the air permeability of the breast milk pad when absorbed is 10 g ³ / cm ² · s or more. The breast pad has a fastening part for fixing the breast pad to underwear on the surface on the non-skin facing surface side,
The fastening part has a part overlapping with each of the pressing parts located in the four corners of a virtual quadrilateral that is inscribed in a plan view shape of the absorber and overlaps all the pressing parts, in the thickness direction. The breast milk pad as described in any one of claim | item 1 -5.

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