JP4614762B2 - Absorbent articles - Google Patents

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, cage sheets, and incontinence pads.

Patent Document 1 below discloses an absorbent article in which a design indicating the mounting direction is printed at the center in the width direction of the absorbent article so that the mounting direction can be determined.
In the following Patent Document 2, a design is printed on a region outside the absorbent body on the wearer side surface of the back sheet, and the design passes through the top sheet and is visible from the skin contact surface side. An absorbent article is disclosed which is intended to improve the depressed mood of the wearer.
Patent Document 3 listed below discloses an absorbent article in which a region outside the absorbent body on the skin contact surface side is entirely colored so that it is less noticeable even when dark underwear is worn. ing.

JP 2002-360620 A International Publication No. 2004/006818 Pamphlet Registered Utility Model No. 30212237

  In the absorbent article, improvement of leak-proof property is considered as a problem, but in any of Patent Documents 1 to 3, no consideration is given to the use of pattern printing for improvement of leak-proof property.

  Accordingly, an object of the present invention is to provide an absorbent article capable of improving leakage resistance by printing a design, and further allowing the wearer to recognize the improvement in leakage resistance and giving a sense of security. is there.

  The present invention is an absorbent article comprising a substantially longitudinal absorbent body having a top sheet, a back sheet, and an absorbent body interposed therebetween, on the skin contact surface side of the absorbent body. Is formed with a plurality of recesses recessed in the thickness direction in a region outside the absorber, and a pattern is formed by providing a printing portion by transferring ink to the bottom of the recess. The above object is achieved by providing an absorbent article.

  According to the absorbent article of the present invention, it is possible to improve leakage resistance by printing a design, and to give the wearer a sense of security by further recognizing the improvement in leakage resistance.

  Hereinafter, the absorbent article of this invention is demonstrated about the sanitary napkin of 1st Embodiment which is one preferable embodiment, referring FIG.1 and FIG.2. The oblique lattice hacking region shown in FIG. 1A indicates a region where a symbol is formed, but this region does not indicate that the symbol is formed on the entire surface, but represents the outline of the entire symbol. It is shown. The same applies to the drawings subsequent to FIG. Moreover, FIG.1 (b) is an enlarged view of the symbol in the dashed-two dotted line circle of Fig.1 (a).

As shown in FIGS. 1 and 2, the sanitary napkin 1 according to the first embodiment includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-holding absorption interposed therebetween. A substantially longitudinal absorbent body A having a body 4 is provided. Moreover, it has a pair of wings B and B extended in the width direction from the both-sides edge part of the absorptive main body A. As shown in FIG.
On the skin contact surface C side of the absorbent main body A, a plurality of recesses 6 that are recessed in the thickness direction are formed in a region outside the absorber 4, and the ink K is formed on the bottom 61 of the recess 6. Is transferred and a printing part is provided, and the pattern P is formed. In detail, the pattern P by a recessed part and a printing part is formed in the skin contact surface side of the surface sheet 2. FIG.
The “region outside the absorber” means an outer region that does not overlap with the absorber when the absorbent article is viewed in a plan view. Including both areas.

In the absorbent main body A, the top sheet 2 covers the entire area of the upper surface of the absorbent body 4 and extends outward from both side edges 4A of the absorbent body 4 in the width direction, and the front and rear edges in the longitudinal direction. It extends outward from the part 4B and overlaps the back sheet 3.
As the top sheet 2, various materials such as a nonwoven fabric, an apertured film sheet, and a composite sheet thereof can be used. As will be described later, a recess 6 is formed in the top sheet 2, and a bottom 61 of the recess 6 is formed. In the case where the pattern P is formed by transferring ink, an ink capable of such processing is used. In this embodiment, a hydrophilic nonwoven fabric is used.

The back sheet 3 covers the entire area of the lower surface of the absorbent body 4 and extends outward from both side edges 4A of the absorbent body 4 in the width direction, and extends outward from the front and rear edges 4B in the longitudinal direction. I'm out. The back sheet may have air permeability, may not be completely liquid-impermeable, and may be hardly permeable. The back sheet 3 is not particularly limited, and a leak-proof film sheet is used in the present embodiment. In addition, as the back sheet, a film sheet provided with fine holes, a nonwoven fabric, or a composite thereof A sheet or the like may be used. Moreover, when the leak-proof sheet | seat is interposed between absorbers, the back surface sheet | seat which comprises the non-skin contact surface D side does not need to have liquid impermeability.
A well-known thing can be especially used as the absorber 4 without a restriction | limiting.

As shown in FIG. 1, the pair of wings B are provided on both side edges at the position of the excretory part-facing part of the absorbent main body A, and the widthwise outer part of the back sheet 3 and the top sheet 2. It is formed from the outer portion in the width direction.
As shown in FIG. 1 and FIG. 2A, the back sheet 3 and the top sheet 2 are joined at the side edges of the absorbent main body A and the edges of the wing B, which are the edges of both sheets. A seal portion E is formed. Further, as shown in FIG. 1, the top sheet 2 and the back sheet 3 are joined at the front and rear edges of the absorbent main body A to form an end seal portion F.
As shown in FIG. 2, the back sheet 3 and the top sheet 2 are also bonded by an adhesive (not shown) in the area near the side edges 4 </ b> A and the area of the wing B in the absorbent main body A.

  The sanitary napkin 1 of the present embodiment is fixedly attached to the underwear by a hot melt adhesive (not shown) provided on the non-skin contact surface D side of the absorbent main body A and the wing B. Wing B is used by wrapping around the crotch of the underwear.

  As shown in FIG. 2B, the surface sheet 2 is formed with a plurality of recesses 6 that are recessed in the thickness direction, and the ink K is transferred to the bottom 61 of the recesses 6, and FIG. As shown, a printed pattern P is formed. The recess 6 is formed by embossing the topsheet 2 into a predetermined shape in plan view, and a preferable diameter or width of the recess 6 is 0.5 mm to 5.0 mm.

  As the ink, inorganic pigments, organic pigments, and the like can be used. From the viewpoint of ease of handling and viewpoints of the process, particularly, organic pigments having relatively good thermal stability include heat and the like. From the viewpoint of the formation of the recess 6 due to or stability over time. In addition, it is preferable to use an adhesive (such as a hot melt type) in which these various pigments are blended from the viewpoint of easy formation of the recesses 6 and joining with other materials. As will be described later, when the concave portion 6 is formed on the top sheet 2 or the like and the pattern P is formed by transferring the ink to the bottom 61 of the concave portion 6, such processing can be performed, for example, letterpress printing, Gravure printing or the like is used.

As shown in FIG. 1 (b), the symbol P is composed of a collection of petal-shaped symbols 71, leaf-shaped symbols 72, long wavy-shaped symbols 73, short wavy-shaped symbols 74, and the like. It is formed along the peripheral part. The design P along the peripheral edge of the absorbent body 4 is arranged in a design forming area 51 that substantially surrounds the peripheral edge of the absorbent body 4 shown in FIG.
“Substantially surround the periphery of the absorber” means that when the virtual half-line extending orthogonally from the periphery of the absorber is moved along the periphery of the absorber in plan view, the absorber The pattern P (in the first embodiment, a petal-shaped pattern 71, a leaf-shaped pattern 72, a long wavy-shaped pattern 73, a short wavy-shaped pattern 74, etc.) Means crossing.

The topsheet 2 having the pattern P formed by transferring the ink K to the bottom 61 of the recess 6 can be formed by various methods, for example, by the method shown in FIG.
The forming method shown in FIG. 3 uses a pair of rolls composed of an embossing roll R1 having an embossing convex part R3 corresponding to the concave part 6 of the topsheet 2 provided on the peripheral surface and a receiving roll R2 having a smooth peripheral surface. . In the forming method shown in FIG. 3, the embossing roll R1 and the receiving roll R2 are respectively arranged below and above the material of the transported top sheet 2, and the ink containing the ink K on the side of the embossing roll R1. A ridge R5 and an ink roller R4 are arranged.

  When the embossing roll R1 rotates, the ink K adheres to the vicinity of the top of the embossing convex part R3 only from the ink fountain R5 through the ink roller R4 on the side thereof, and the upper side of the embossing roll R1. , The material of the topsheet 2 is embossed between the embossed convex portion R3 to which the ink K is adhered and the peripheral surface of the receiving roll R2. As a result, the material of the top sheet 2 is formed with a recess 6 that is recessed upward and has the ink K attached to the bottom 61.

According to the sanitary napkin 1 of the first embodiment configured as described above, it is possible to improve leakage resistance by printing the pattern P, and to make the wearer recognize the improvement in leakage resistance and feel secure. Can be given.
Specifically, a recess 6 is formed in a region outside the absorbent body 4 in plan view on the skin contact surface C side of the absorbent main body A, and the ink K is transferred to the bottom 61 of the recess 6. Since the pattern P by printing is formed, the liquid propagating through the top sheet 2 itself is blocked by the pattern P. In particular, since the pattern P is disposed so as to substantially surround the peripheral edge of the absorbent body 4, the effect of blocking leakage is high. Then, the design P allows the wearer to clearly see the design P, and to strongly recognize the improvement of the leakage prevention effect by the design P. Therefore, the wearer can be given a sense of security against leakage. Further, the design of the absorbent article is improved by the design P, and the impression of the wearer is also improved.

  In addition, the liquid propagating on the surface (skin contact surface) of the top sheet 2 flows into the recess 6, thereby further improving the leakproof property. When the ink adhering to the concave portion of the pattern P is hydrophobic or water repellent, the effect of suppressing the bleeding by filling the gaps due to the fibers of the surface sheet is enhanced, and therefore, particularly high leakage resistance is exhibited.

  Further, since the pattern P is formed by transferring the ink K to the bottom 61 of the recess 6, the printed portion does not substantially contact the wearer's skin. For this reason, the ink does not cause a sense of incongruity and does not impair the flexibility of the surface sheet, and does not impose a burden on the wearer's skin. Note that “the printing unit does not substantially contact the wearer's skin” means that the printing unit does not contact the wearer's skin in a normal use mode.

  Furthermore, since the pattern P is formed by printing, compared to the case where the pattern is formed by the conventional heat seal method, the material itself of the surface sheet 2 is less altered and the original softness of the material is easily maintained. The feel of the area where the pattern is formed is good.

Next, a sanitary napkin according to a second embodiment will be described with reference to FIG. FIG.4 (b) is an enlarged view of the symbol in the dashed-two dotted line circle of Fig.4 (a).
The second embodiment is mainly different from the first embodiment in the shape and arrangement position of the symbols. The second embodiment will be described with a focus on differences from the first embodiment, the same points as those of the first embodiment will be denoted by the same reference numerals, and description thereof will be omitted. The description regarding the first embodiment is also applied to the second embodiment as appropriate.

As shown in FIG. 4, the sanitary napkin 1 according to the second embodiment is composed mainly of an absorbent main body A and a wing B as in the first embodiment.
Thus, the symbols P are formed in the symbol forming regions 52 along the side edges 4A of the absorbent body 4, and the symbols P along the side edges 4A of the absorber 4 are the lengths of the absorbent body 4, respectively. It arrange | positions so that it may continue substantially in a direction.
In addition, the design P is formed in the design formation region 53 along the front and rear edge 4B of the absorbent body 4, and the design P along the front and rear edge 4B of the absorbent body 4 is in the width direction of the absorbent body 4, respectively. They are arranged so as to be substantially continuous.

  When the shape of the symbol P is described in detail, as shown in FIG. 4B, four crescent-shaped symbols are gathered every 90 ° to form a windmill-shaped symbol unit 75, and the symbol unit 75 is smooth. By arranging in an arc shape, the symbol P is formed in the symbol forming region 52 along the side edges 4A of the absorber 4 and the symbol forming region 53 along the front and rear edges 4B.

  Here, “substantially continuous in the longitudinal direction” means 80% or more of the total length in the longitudinal direction when a virtual straight line orthogonal to the longitudinal direction (extending in the width direction) is moved in the longitudinal direction in plan view. In FIG. 5, it means crossing the symbol P (in the second embodiment, an assembly of windmill-shaped symbol units 75). Similarly, “substantially continuous in the width direction” means that 80% or more of the total length in the width direction when moving in a width direction a virtual straight line orthogonal to the width direction (extending in the longitudinal direction) in plan view. Means crossing the pattern P.

  According to the sanitary napkin 1 of the second embodiment, the same effect as that of the sanitary napkin of the first embodiment can be obtained, and an aesthetic appearance with a design different from that of the first embodiment can be given to the wearer.

The absorbent article of the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the gist of the present invention.
In addition to sanitary napkins, the absorbent article of the present invention can also be applied to panty liners, cage sheets, incontinence pads, and the like. In particular, the present invention can be favorably applied to absorbent articles having a thickness of 2 mm or more, absorbent articles having a length of 150 mm or more, and absorbent articles having a width of 50 mm or more.

The formation position of the symbol is not limited to the formation position in the first or second embodiment as long as it is a region outside the absorber in plan view.
For example, as shown in FIG. 5, the pattern P may not be formed along the front and rear edges 4 </ b> B of the absorber 4, but may be disposed only in the pattern formation region 52 along the side edges 4 </ b> A of the absorber 4. . In this case, the leakproof property at both side edges of the absorbent article is improved.
As shown in FIG. 6, the pattern P may not be formed along the side edges 4 </ b> A of the absorber 4, but may be disposed only in the pattern formation region 53 along the front and rear edges 4 </ b> B of the absorber 4. In this case, leakage prevention at the front and rear edge portions of the absorbent article is improved.

As shown in FIG. 7, the design P is formed along the peripheral edge of the entire absorbent article 1 including the wing B, and the design P along the peripheral edge of the entire absorbent article is formed along the peripheral edge. It can arrange | position in the substantially continuous symbol formation area 54. FIG. In this case, the leak-proof property in the peripheral part of an absorbent article improves. In addition, “substantially continuous along the peripheral edge of the entire absorbent article” means that the virtual half-line extending inward and perpendicular to the peripheral edge of the entire absorbent article is absorptive in plan view. When moved along the periphery of the entire article, it means that the pattern is traversed at 80% or more of the peripheral length of the entire absorbent article.
As shown in FIG. 8, the present invention can be applied to a sanitary napkin that does not include a pair of wings.

The shape of the symbol is not limited to the shape of the symbol in the first or second embodiment. For example, the solar shape shown in FIG. 9A, the heart shape shown in FIG. 9B, the regular pentagon shape shown in FIG. 9C, the crescent shape shown in FIG. 9D, and the shape shown in FIG. The personification of the fruit etc. are mentioned.
Further, as shown in FIG. 10 (a), a substantially continuous symbol P can be formed by arranging a plurality of wavy line symbol units P1 in a continuous manner. As shown in FIG. 10 (b), a plurality of the sun-shaped symbol units P2 shown in FIG. 9 (a) are arranged in series to form a wavy line shaped symbol unit P1, and this wavy line shaped symbol unit is further formed. It is possible to form a substantially continuous pattern P by arranging a plurality of units P1 in a continuous manner.
A design can also be intermittently arrange | positioned along the side edge part, front-back edge part, or peripheral part of an absorber.

The design is not limited to the surface sheet, and can be formed on the surface on the skin contact surface side of a member separate from the absorbent main body, such as a side sheet or a side gather.
The configurations related to the first embodiment, the second embodiment, or other embodiments described above can be combined as appropriate.

  Moreover, you may give a design not only to both the front-and-back edge part 4B of the absorber 4, but to either a front edge part or a rear edge part, as shown in FIG. In addition, as shown in FIG. 11, a pattern forming region 55 may be arranged at the corner (corner) of the absorbent article where the longitudinal side edges 4A and the widthwise front and rear edges 4B intersect. Good. As described above, the design can be appropriately provided at a place where it is desired to improve leakage prevention.

  The wing may be formed by bonding a sheet different from the top sheet and the back sheet to both side edges of the absorbent main body.

Fig.1 (a) is a top view which shows the sanitary napkin of 1st Embodiment which is one Embodiment of the absorbent article of this invention, FIG.1 (b) is the dashed-two dotted line circle | round | yen of Fig.1 (a). It is an enlarged view of the design in the inside. Fig.2 (a) is a cross-sectional view of the sanitary napkin of 1st Embodiment, FIG.2 (b) is sectional drawing which crosses a recessed part. Drawing 3 is a mimetic diagram showing the printing method of the design to the surface sheet in a 1st embodiment. Fig.4 (a) is a top view which shows the sanitary napkin of 2nd Embodiment, FIG.4 (b) is an enlarged view of the design in the dashed-two dotted line circle | round | yen of Fig.4 (a). FIG. 5 is a plan view showing a sanitary napkin according to another embodiment. FIG. 6 is a plan view showing a sanitary napkin according to still another embodiment. FIG. 7 is a plan view showing a sanitary napkin according to still another embodiment. FIG. 8 is a plan view showing a sanitary napkin according to still another embodiment. FIGS. 9A to 9E are diagrams showing symbols having various shapes. 10 (a) and 10 (b) are diagrams showing symbols having various shapes. FIG. 11 is a plan view showing a sanitary napkin according to still another embodiment.

Explanation of symbols

1 Sanitary napkin (absorbent article)
2 Top sheet 3 Back sheet 4 Absorbers 51, 52, 53, 54, 55 Pattern formation region 6 Recess 61 Bottom part A Absorbent body B Wing C Skin contact surface D Non-skin contact surface E Side seal part F End seal part K ink P design R1 embossing roll R2 receiving roll R3 embossing convex part

Claims (5)

An absorbent article comprising a substantially longitudinal absorbent body having a top sheet, a back sheet, and an absorbent body interposed therebetween,
On the skin contact surface side of the absorbent main body, a plurality of recesses that are recessed in the thickness direction are formed in the nonwoven fabric in a region outside the absorber, and the diameter or width of the recess is 0. 0. 5 to 5.0 mm, and a hydrophobic or water-repellent ink is transferred only to the bottom of the recess to provide a printed part, and a pattern is formed .
The nonwoven fabric on which the design is formed is a sheet different from the top sheet or the top sheet and the back sheet,
The said design is an absorbent article comprised including 1 or more types selected from the group which consists of a wavy shape of a petal shape, a leaf shape, and a continuous line shape .   The said design is formed along the peripheral part of the said absorber, The said design along the peripheral part of this absorber is arrange | positioned so that this peripheral part may be enclosed substantially. Absorbent article.   The designs are respectively formed along both side edges of the absorbent body, and the designs along both side edges of the absorbent body are arranged so as to be substantially continuous in the longitudinal direction of the absorbent body. The absorbent article according to claim 1.   The design is formed along the front edge and / or the rear edge of the absorber, and the design along the front and rear edges of the absorber is substantially continuous in the width direction of the absorber. The absorptive article according to claim 1 or 3 arranged so that.   A pair of wings extending in the width direction are provided on both side edges of the absorbent main body, and the design is formed along the peripheral edge of the entire absorbent article including the wings, The absorbent article according to claim 1, wherein the design along the peripheral edge of the entire absorbent article is arranged to be substantially continuous along the peripheral edge.

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