JP2007202790A - Absorptive article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorptive article that has a guaranteed mountability, prevents itself from becoming twisted and is well-disposable after use. <P>SOLUTION: The absorptive article consists of a substantially vertically-oriented thin (0.5-2 mm thick) absorptive body 10 of an absorption layer A and a leakproof layer B, and a shape-retaining strip 6 extending in the absorptive body 10 in its longitudinal direction. The shape-retaining strip 6 is arranged in a gap C between the absorption layer A and the leakproof layer B of the absorptive body 10. One end 61 of the shape-retaining strip 6 is exposed from the gap C between the two layers and forms a grip, while the other end 62 is fixed to the gap C. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a thin absorbent article, and more particularly to an absorbent article that is particularly suitably used as a panty liner, a sanitary napkin, a cage sheet, or the like.

  Thin absorbent articles such as panty liners and sanitary napkins tend to have low rigidity and are easy to twist due to their thin thickness. In order to prevent twisting, it is conceivable to use a material having high rigidity while ensuring the thinness of the entire article. However, if a material having high rigidity is used, there arises a problem that wearability is lowered.

  Then, the technique which prevents a twist, providing the highly rigid area | region extended to a longitudinal direction only in the width direction center part of an absorbent article, and ensuring mounting | wearing is disclosed (for example, refer the following patent documents 1-3). . The high-rigidity region is formed, for example, by disposing another member in the center portion in the width direction, compressing the center portion in the width direction, or applying an adhesive to the center portion in the width direction.

Japanese National Patent Publication No. 7-50603 Japanese Patent Laid-Open No. 7-204225 Japanese Utility Model Publication No. 3-43832.

  In thin absorbent articles, it is desired to make the absorbent articles small and easily disposed of, but in the absorbent articles described in Patent Documents 1 to 3, improve the disposability after use. There is no consideration for.

  Accordingly, an object of the present invention is to provide an absorbent article that can prevent twisting while ensuring wearability, and also has good disposal after use.

  The present invention comprises a substantially thin and thin absorbent body having a thickness of 0.5 to 2 mm formed by laminating an absorbent layer and a leak-proof layer, and a shape-retaining strip extending in the longitudinal direction of the absorbent body. The shape-retaining strip is disposed between the absorbent layer and the leak-proof layer in the absorbent main body, and one end of the shape-retaining strip is exposed from the interlayer and is a gripping portion. And the other end of the shape-retaining strip achieves the object by providing an absorbent article (hereinafter also referred to as a first invention) fixed between the layers.

  In addition, the present invention provides a thin absorbent main body that is substantially vertically long and has a thickness of 0.5 to 2 mm in which an absorbent layer and a leak-proof layer are laminated, and a shape-retaining strip that extends in the longitudinal direction of the absorbent main body. The shape-retaining strip is disposed between the absorbent layer and the leak-proof layer in the absorbent main body, and the absorbent main body has a separation line. By cutting the wire, the main body main part and the main body gripping part can be separated in the longitudinal direction, and one end of the shape-retaining strip is formed between the absorbent layer and the leak-proof layer in the main body gripping part. The absorbent article is fixed between the layers, and the other end of the shape-retaining strip is fixed between the absorbent layer and the leak-proof layer in the main part of the main body (hereinafter also referred to as a second invention). The above-mentioned purpose is achieved by providing .

  According to the absorbent article of the present invention, it is possible to prevent twisting while ensuring wearability, and good disposal properties after use.

Hereinafter, an absorbent article according to a first invention of the present invention will be described with reference to the drawings based on the panty liner of the first embodiment which is a preferred embodiment thereof.
As shown in FIGS. 1 and 2, the panty liner 1 according to the first embodiment includes a substantially vertically long and thin absorbent main body 10 in which an absorbent layer A and a leak-proof layer B are laminated, and an absorbent main body 10. And a shape-retaining strip 6 extending in the longitudinal direction.

The thickness of the absorbent main body 10 is 0.5-2 mm, preferably 0.5-1 mm. The thickness here refers to the thickness at the thickest portion of the absorbent main body 10. The thickness of the absorbent main body 10 is, for example, a measuring plate (a transparent acrylic plate having a thickness of 2 to 5 mm) whose size is adjusted to a load of 2.5 g / cm ² with a Peacock tabletop thickness gauge manufactured by Ozaki Mfg. Co., Ltd. And is preferably symmetrical with respect to the portion where the tip of the thickness gauge contacts, such as a circle or a square with a corner cut off).

  The absorbent layer A is disposed on the skin facing surface side facing the wearer's skin when worn, and the leak-proof layer B is disposed on the clothing facing surface (non-skin contact surface) side facing clothing such as shorts. is doing. In this embodiment, the absorption layer A is comprised from the liquid-permeable surface sheet 2, and the leak-proof layer B is comprised from the back sheet 3 which is liquid-impermeable or liquid-impermeable. Both the top sheet 2 and the back sheet 3 have the same shape in plan view, and are joined by heat sealing at the peripheral edge 5 thereof.

  Thin absorbent articles such as panty liners have a small number of constituent members due to their use, and since each constituent member is thin and has low rigidity, the overall rigidity is also low. Due to this, it may be difficult to attach to shorts. In particular, when the absorbent article is easily bent when the absorbent article is held in the hand and the adhesives adhere to each other, it becomes more difficult to attach to the shorts.

  Therefore, in the panty liner 1 of the present embodiment, as a member for maintaining the shape of the absorbent main body 10, an elongated strip-shaped shape retaining material is provided in the interlayer C between the top sheet 2 and the back sheet 3 in the absorbent main body 10. A strip 6 is provided. The shape retaining strip 6 increases the rigidity of the panty liner 1. Further, the shape-retaining strip 6 improves the discardability of the used panty liner 1 as will be described later.

  The shape-retaining strip 6 has sufficient rigidity to increase the rigidity of the absorbent main body 10. Regarding the degree of rigidity of the shape-retaining strip, the bending resistance measured by a cantilever method in accordance with JIS L 1085 (5.7A method) is preferably 50 mm or more, particularly preferably 100 mm or more. The bending resistance is evaluated in the longitudinal direction of the shape-retaining strip 6 having a section having a width of 10 mm and a length of 120 mm (hereinafter, “the bending resistance” is a value measured by this method).

  Although there is no particular limitation on the upper limit of the bending resistance, it is preferable to hang downward at the time of measurement from the viewpoint of preventing a sense of incongruity and improving fit, and hangs down to a measurable range, that is, 120 mm or less. preferable. If the total length of the shape-retaining strip 6 is less than 120 mm, the length is measured and converted to 120 mm.

  The material of the shape-retaining strip 6 is not particularly limited. Since the shape-retaining strip 6 preferably has a certain degree of flexibility, it is preferable to use, for example, various synthetic resins as its constituent material. For example, polyethylene, polypropylene, and ethylene-vinyl alcohol copolymer are preferably used. Moreover, as a constituent material of the shape-retaining strip 6, nonwoven fabrics formed from various synthetic resins can be used. Among these, a spunbonded nonwoven fabric is preferable from the viewpoint of smoothness, and an air-through nonwoven fabric is preferable from the viewpoint of shape retention.

The shape-retaining strip 6 can be obtained, for example, by cutting a synthetic resin film having a predetermined thickness into a strip shape. Alternatively, the synthetic resin may be obtained by extrusion molding into a strip shape.
The thickness of the shape-retaining strip 6 is not particularly limited. If the thickness of the shape-retaining strip 6 is too large, the wearing feeling of the panty liner 1 (absorbent body 10) is lowered. Conversely, if the thickness is too small, sufficient rigidity may not be imparted to the absorbent body 10. From these viewpoints, the thickness of the shape-retaining strip 6 is generally 10 to 150 μm, particularly 45 to 100 μm, although it depends on the material.

  Regarding the width of the shape-retaining strip 6, if the width is too large, the texture of the absorbent main body 10 tends to be lowered, and if it is too narrow, the effect of imparting rigidity by the shape-retaining strip 6 is not sufficiently exhibited. There is a tendency. Considering these, it is preferable that the shape-retaining strip 6 has a width of 5 to 25%, particularly 7 to 20% of the width of the absorbent main body 10. When the width of the absorbent main body 10 is not constant as in the present embodiment, the width at the narrowest portion is defined as the width of the absorbent main body 10.

The length of the shape-retaining strip 6 is preferably 70 to 120% of the total length of the absorbent main body 10, and more preferably 80 to 110%.
When the length of the shape-retaining strip 6 is less than 70% of the total length of the absorbent main body 10, the portion of the absorbent main body 10 to which rigidity by the shape-retaining strip 6 is not imparted is excessive, and the absorbent property is absorbed during mounting. It cannot effectively prevent the main body 10 from being bent along the width direction.

  One end portion 61 of the shape-retaining strip 6 is exposed from an interlayer C between the absorbent layer A (surface sheet 2) and the leak-proof layer B (back surface sheet 3) in the absorbent main body 10 to form a grip portion. Yes. More specifically, a strip exposure hole 31 is provided in the vicinity of one end portion in the longitudinal direction of the back sheet 3 so as to be spaced inward in the longitudinal direction from the peripheral edge portion 5. The strip exposure hole 31 preferably has a shape that allows at least the shape-retaining strip 6 to be smoothly inserted, and has a shape that restricts the insertion direction of the shape-retaining strip 6 to some extent. For example, the strip exposure hole 31 has a rectangular shape with a width of 105 to 120% and a length (corresponding to a thickness) of 105 to 200% with respect to the width and thickness of the rectangular cross section of the shape-retaining strip 6. It is preferable.

From the viewpoint of facilitating gripping, the shape-retaining strip 6 is preferably exposed 5 to 25 mm from the strip exposure hole 31, and more preferably 10 to 15 mm.
1 and 2, the one end 61 of the shape-retaining strip 6 may or may not extend from the longitudinal end 10A of the absorbent main body 10 (not shown). )

  The other end 62 of the shape retaining strip 6 is fixed to the interlayer C by a strip fixing portion 63. More specifically, the other end 62 of the shape-retaining strip 6 is in the vicinity of the other end 10B in the longitudinal direction of the absorbent main body 10 in the interlayer C (the side where the strip exposure hole 31 is not provided). 62 is fixed to the inner surface of the top sheet 2 (surface on the back sheet 3 side) and the inner surface of the back sheet 3 (surface on the top sheet 2 side) by strip fixing portions 63 provided on the upper and lower surfaces of 62.

  As a means for forming the strip fixing portion 63, for example, adhesion by a hot melt adhesive, fusion by heat sealing, or the like can be used.

  The other end 62 of the shape-retaining strip 6 is preferably located inward in the longitudinal direction from the peripheral edge 5 of the absorbent main body 10. By arrange | positioning in this way, it can prevent that the other end part 62 of the shape-retaining strip 6 gives irritation | stimulation to a wearer's body.

  The shape-retaining strip 6 is disposed along the longitudinal center line of the absorbent main body 10. By arranging the shape-retaining strip 6 in this manner, the rigidity of the shape-retaining strip 6 is effectively imparted over the entire length direction of the absorbent main body 10. Moreover, since the shape-retaining strip 6 also acts as a guide portion that guides the absorbent main body 10 to the center of the wearer's body, the absorbent main body 10 can easily fit the center line of the wearer's body. Moreover, it is difficult for the absorbent main body 10 to be displaced in the lateral direction during wearing, and a good wearing feeling is maintained.

  An adhesive portion 7 is provided on the grip portion 61 of the shape-retaining strip 6. In the present embodiment, the adhesive portion 7 is provided on the surface of the grip portion 61 on the back sheet 3 side. The adhesive part 7 can be covered by temporarily fastening it to the outer surface of the back sheet 3 before the disposal operation. The adhesive part 7 can be formed, for example, by applying an adhesive to the shape-retaining strip 6. The adhesive portion 7 is preferably formed at the end portion of the shape-retaining strip 6 from the viewpoint of facilitating fixing to the outer surface of the back sheet 3, and from the viewpoint of easily grasping, the end of the shape-retaining strip is formed. It is preferable that it is formed 3 to 10 mm away from the part.

Each component in the absorptive main body 10 is further demonstrated.
The top sheet 2 is made of a material that is liquid permeable and does not irritate the skin. For example, a non-woven fabric made of natural fibers such as cotton or a non-woven fabric made of various synthetic fibers subjected to hydrophilic treatment can be used. The basis weight of the surface sheet 2 is preferably about 40 to 100 g / m ² , particularly about 55 to 85 g / m ² . The manufacturing method of a surface sheet can be suitably selected according to the composition of the fiber used and the characteristic of the target panty liner. For example, methods such as a spunlace method, a thermal bonding method (air-through method or calendar bond method, or a combination thereof), and a spunbond method are preferably used.

  For example, as shown in FIG. 3, the top sheet 2 is composed of a concavo-convex sheet composed of a first fiber layer 21 on the upper surface side and a second fiber layer 22 on the lower surface side. In this concavo-convex sheet, the first fiber layer 21 and the second fiber layer 22 are partially heat-sealed to form a heat-sealed portion (joint portion) 23. A large number of convex portions 24 having compression elasticity are formed at portions other than the fused portion 23.

The concavo-convex sheet is obtained by partially heat-sealing the first fiber layer 21 and the second fiber layer 22 made of a fiber assembly in a predetermined pattern by hot embossing, and then heat the second fiber layer 22 in the horizontal direction. Obtained by contraction.
More specifically, the heat fusion by heat embossing includes, for example, an embossed surface (a circumferential surface of an embossing roll, etc.) on which a large number of embossed spins are regularly arranged, the first fiber layer 21 and the second fiber layer. The first fiber layer 21 and the second fiber layer 22 are melted at the portion that is pressed against the first fiber layer 21 side of the laminated body 22 and is thermally pressed by each pin. The heat shrinkage of the second fiber layer 22 is, for example, configured by forming the second fiber layer 22 from heat-shrinkable fibers or including the heat-shrinkable fibers in the second fiber layer 22, It is performed by heat-treating the second fiber layer 22 at the same time when the second fiber layer 22 is heat-sealed or after heat-sealing both. A large number of convex portions 24 are produced by deforming the portions of the first fiber layer 21 other than the heat-sealed portion 23 into a convex shape by thermally contracting the second fiber layer 22 in the horizontal direction.

As shown in FIG. 3, the large number of heat fusion portions 23 are regularly formed in a dotted pattern and a zigzag manner, and the distance between the heat fusion portions 23 is substantially constant.
Each convex portion 24 has a dome shape, and the inside thereof is filled with fibers constituting the first fiber layer 21. In addition, the interface between the first fiber layer 21 and the second fiber layer 22 in the portion where each convex portion 24 is formed is not bonded but is in a close contact state.
It is preferable that the constituent fibers of the first fiber layer 21 have substantially no heat shrinkability or do not undergo heat shrinkage at a temperature equal to or lower than the heat shrink temperature of the constituent fibers of the second fiber layer 22 described later.

  The constituent fiber of the second fiber layer 22 is preferably made of a thermoplastic polymer material and having heat shrinkability. Moreover, it is preferable that the constituent fibers exhibit an elastomeric behavior even after shrinkage. Examples of such fibers include latently crimpable fibers. The content ratio of the latent crimpable fibers in the second fiber layer 22 is preferably 40 to 100% by weight. The latent crimpable fiber can be handled in the same manner as a conventional nonwoven fabric fiber before being heated, and has a property that a helical crimp is developed and contracted by heating at a predetermined temperature. It is. By using latent crimpable fibers, both heat shrinkability and elastomeric behavior can be developed simultaneously.

  The latent crimpable fiber is composed of, for example, an eccentric core-sheath type or side-by-side type composite fiber composed of two types of thermoplastic polymer materials having different shrinkage rates. Examples thereof include those described in JP-A-9-292325 and Japanese Patent No. 2759331. The second fiber layer 22 includes, for example, such latent crimpable fibers, and at the same time or after the heat fusion with the first fiber layer 21, the crimps of the fibers are expressed by heating, Shrink.

The back sheet 3 is made of a liquid-impermeable or liquid-impermeable sheet material. For example, various synthetic resin films can be used. The back sheet 3 may be provided with water vapor permeability as necessary. The basis weight of the back sheet 3 is preferably 15 to 60 g / m ² , particularly preferably ²⁰ to 45 g / m ² . Providing water vapor permeability to the back sheet 3 is preferable from the viewpoint of wearing the panty liner 1 for a long time. In this case, in order to obtain sufficient water vapor permeability, a porous film having a fine hole formed by stretching a film made of synthetic resin such as polyethylene in which fine powder made of a filler such as calcium carbonate is dispersed is preferably used. It is done. In order to have sufficient strength in such a porous film, the preferred basis weight is 30 to 45 g / m ² .

The panty liner 1 of the present embodiment can be discarded after use, for example, after forming a discard form as follows.
After use, the one end 10A of the absorbent main body 10 (the end on the one end 61 side of the shape-retaining strip 6) is held with one hand (not shown). In this state, one end (grip part) 61 of the shape-retaining strip 6 is grasped with the other hand (not shown) and pulled. As a result, as shown in FIG. 4A, the shape-retaining strip 6 is exposed from the interlayer C of the absorbent main body 10 through the strip exposure hole 31, and the absorbent main body 10 is folded in a bellows shape.

  In this state, as shown in FIG. 4B, the shape-retaining strip 6 is wound around the folded absorbent main body 10, and the adhesive portion 7 provided on the gripping portion 61 of the shape-retaining strip 6 is used. The folded form of the absorbent body 10 is retained. Then, the panty liner 1 can be discarded in this folded form.

  Thus, according to the panty liner 1 of the present embodiment, the shape-retaining strip 6 extending in the longitudinal direction of the absorbent main body 10 is arranged between the absorbent layer A and the leak-proof layer B in the absorbent main body 10. Since it is provided, it is possible to prevent twisting while securing the wearability.

  Further, since one end portion (gripping portion) 61 of the shape-retaining strip 6 is exposed from the interlayer C and the other end portion 62 of the shape-retaining strip 6 is fixed to the interlayer C, the shape-retaining strip 6 When the grip 61 is pulled, the absorbent main body 10 is folded. And the folding form of the absorptive main body 10 can be hold | maintained using the strip 6 for shape retention, and the panty liner 1 can be formed in a preferable disposal form simply. Therefore, it is excellent in discardability.

In particular, since the topsheet 2 forming the absorbent layer A of the absorbent main body 10 is composed of a concavo-convex sheet, the absorbent main body 10 can be easily folded into a bellows shape with a beautiful shape.
Since the adhesive portion 7 is provided on the grip portion 61 of the shape-retaining strip 6, after the shape-retaining strip 6 is wound around the folded absorbent main body 10, the shape can be easily held by the adhesive portion 7. Can do.
Since the other end portion 62 of the shape-retaining strip 6 is located in the vicinity of the longitudinal end portion 10B of the absorbent main body 10, the entire absorbent main body 10 is easily folded.

  As a method for facilitating the folding of the absorbent layer into a bellows shape, in addition to the above-described method of forming irregularities in the absorbent layer A, the absorbent layer and the leak-proof layer can be combined with a staggered dot pattern or the length of the absorbent main body. A method of joining in a linear pattern extending in the width direction intermittently in the direction, a method of passing the absorbent main body between the concavo-convex rolls, and a method of attaching a bending wrinkle can be used. It is preferable to use a hot-melt adhesive or heat embossing for joining the absorbent layer and the leak-proof layer.

  Next, a modification of the first invention will be described. About a modification, it demonstrates centering on a different point from 1st Embodiment. The points described above with respect to the first embodiment are applied as appropriate to points that are not particularly described. In the modification, the same members as those in the first embodiment are denoted by the same reference numerals.

  In the first invention, the gripping portion 61 in the shape-retaining strip 6 has a form in which the surface on the backsheet 3 side is turned back toward the outer side in the thickness direction of the absorbent main body 10 as shown in FIG. can do. In such a form, since the adhesive part 7 is arranged on the shorts side at the time of wearing, the adhesive part 7 can be used as a slip prevention material for the shorts at the time of wearing. That is, the adhesive portion 7 also serves as a slip stopper.

  In the first invention, the gripping portion 61 in the shape-retaining strip 6 is folded back with the surface on the topsheet 2 side in the thickness direction of the absorbent main body 10 as shown in FIG. It can be in the form. In such a form, the adhesive part 7 is not exposed at the time of mounting, and it is possible to prevent the adhesive force of the adhesive part 7 from being lowered until it is discarded, or the adhesive part 7 from being unintentionally stuck.

  In the first invention, as shown in FIG. 6, two shape-retaining strips 6 can be provided on one absorbent main body 10. More specifically, as shown in FIG. 6, the other end portions 62 and 62 of the two shape-retaining strips 6 and 6 are located in the center in the longitudinal direction of the absorbent main body 10, and the strip fixing portion 63 It is fixed to the interlayer C. One end portions (gripping portions) 61 and 61 of the two shape-retaining strips 6 and 6 are arranged so as to be separated toward the one end portion 10A and the other end portion 10B in the longitudinal direction of the absorbent main body 10, respectively. Yes. Strip exposure holes 31 and 31 are provided in the back sheet 3 in the vicinity of one end 10A and the other end 10B in the longitudinal direction of the absorbent main body 10, respectively, and one end of the two shape-retaining strips 6 and 6 is provided. The portions 61 and 61 are exposed from the respective strip exposure holes 31.

  The panty liner 1 shown in FIG. 6 configured as described above has the following advantages. The panty liner 1 generally has no directionality in the longitudinal direction, and the wearer wears the panty liner 1 on shorts without being particularly aware of the orientation in the longitudinal direction. Therefore, in the case where only one shape-retaining strip 6 is provided as in the first embodiment, the shorts with one end portion (gripping portion) 61 of the shape-retaining strip 6 arranged on the rear side of the wearer. It may be attached to.

  On the other hand, in the panty liner 1 shown in FIG. 6, two shape-retaining strips 6 are provided, and the gripping portions 61 of the shape-retaining strip 6 are respectively provided at the longitudinal ends 10 </ b> A and 10 </ b> B of the absorbent main body 10. Is provided. Therefore, regardless of the mounting direction of the panty liner 1, the gripping portion 61 of the shape retaining strip 6 is always arranged on the front side of the wearer. Therefore, when forming the disposal form of the panty liner 1, The grip part 61 can be easily gripped.

  Next, a panty liner 1 according to a second embodiment which is an embodiment of the second invention of the present invention will be described with reference to FIG. The second embodiment will be described with a focus on differences from the first embodiment. For the points that are not particularly described, the description given above regarding the first embodiment and its modifications is applied as appropriate. In 2nd Embodiment, the same code | symbol is attached | subjected to the same member as 1st Embodiment.

  As shown in FIG. 7, the panty liner 1 according to the second embodiment is substantially vertically long and has a thickness of 0.5, which is formed by laminating an absorption layer A (surface sheet 2) and a leak-proof layer B (back surface sheet 3). A thin absorbent main body 10 having a thickness of ˜2 mm and a shape retaining strip 6 extending in the longitudinal direction of the absorbent main body 10, and the shape retaining strip 6 includes an absorbent layer A and a leak-proof layer B in the absorbent main body 10. The other end portion 62 of the shape-retaining strip 6 is fixed to the interlayer C in the same manner as in the first embodiment.

  Thus, as shown in FIG. 7, the panty liner 1 of the second embodiment has one end 61 of the shape-retaining strip 6 not exposed from the interlayer C as compared to the first embodiment. Instead, the absorptive main body 10 has a separation line 13, and the main body portion 11 and the main body gripping portion 12 can be separated in the longitudinal direction by cutting the separation line 13. The separation line 13 extends in the width direction.

  The separation line 13 is not particularly limited as long as the absorbent main body 10 can be separated in the longitudinal direction. Examples of the configuration of the separation line 13 include a configuration in which cut portions and non-cut portions are alternately arranged, a configuration in which thin portions and thick portions are alternately arranged, and a configuration in which thin portions are provided over the entire width direction. Is mentioned.

  Considering that the length of the main body gripping portion 12 (the length along the longitudinal direction of the absorbent main body 10) is used as a gripping portion when winding the shape-retaining strip 6 around the absorbent main body 10 folded as will be described later. The thickness is preferably 5 to 25 mm, and more preferably 10 to 20 mm.

  One end 61 of the shape-retaining strip 6 is fixed to the interlayer C between the absorbent layer A and the leak-proof layer B in the main body gripping part 12 by the second strip fixing part 64, and exceeds the absorbent main body 10 from the interlayer C. It is not exposed in the longitudinal direction. The other end 62 of the shape-retaining strip 6 is fixed to an interlayer C between the absorption layer A and the leak-proof layer B in the main body main part 11 by a strip fixing part 63.

After use, the panty liner 1 of the second embodiment can be discarded after forming a disposal form, for example, as follows.
After the use, the absorbent main body 10 is separated into the main body main part 11 and the main body gripping part 12 by cutting the separation line 13. Here, the shape-retaining strip 6 is not cut. Therefore, the shape-retaining strip 6 is exposed from the interlayer C at the boundary between the main body main part 11 and the main body gripping part 12.

  And the boundary vicinity with the main body holding part 12 in the main body main part 11 is hold | maintained with one hand (not shown), and the main body holding part 12 is hold | gripped with the other hand (not shown) in that state, Pull outward in the longitudinal direction of the absorbent main body 10. As a result, as shown in FIG. 8, the shape-retaining strip 6 is exposed from the interlayer C in the main body main part 11, and the main body main part 11 is folded into a bellows shape.

In this state, the shape-retaining strip 6 is wound around the folded main body 11, and an absorptive main body is used by using a disposal adhesive portion (not shown) provided on the back sheet 3 in the main body gripping portion 12. Holds 10 folded forms. Then, the panty liner 1 can be discarded in this folded form.
Further, when the main body gripping portion 12 is not provided with the disposal adhesive portion, the shape retaining strip 6 is wound around the main body main portion 11 and then the body gripping portion 12 is wrapped around the wound shape retaining strip 6. It may be fixed by insertion or entanglement.

  In this invention, the adhesive (not shown) for fixing the absorptive main body 10 to clothes, such as shorts, to the outer surface of the back surface sheet 3 of the main body main part 11 and / or the main body holding part 12 in the absorptive main body 10 Can be provided. There are no particular restrictions on the position of the adhesive, and for example, it can be provided on substantially the entire surface of the back sheet 3, can be provided in the form of one or more rectangular bands extending in the longitudinal direction, and extends in the width direction. One or a plurality of rectangular bands can be provided.

  Among these, from the viewpoint that the absorbent main body 10 is easily folded into a beautiful bellows shape, a plurality of rectangular band-like adhesives extending in the width direction are preferable. Further, from the viewpoint of facilitating cutting of the main body gripping portion 12 by the separation line 13, it is preferable that the adhesive in the main body gripping portion 12 is provided separately from the adhesive in the main body main portion 11 in the vicinity of the separation line 13. .

As mentioned above, although the absorbent article of this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment.
The shape-retaining strip 6 may be disposed at a position biased outward in the width direction from the center in the width direction. As a guide, the shape-retaining strip 6 can be arranged at a position deviated within 5 mm from the center in the width direction to the outside in the width direction.
Further, instead of the strip exposure hole 31, a notch is formed at the longitudinal end of the absorbent main body 10 or the longitudinal end of the leak-proof layer B to expose the shape-retaining strip 6 from the absorbent main body 10. You may let them.

  Each of the above embodiments relates to a panty liner, but the present invention is applicable to all thin absorbent articles. As such an absorbent article, for example, a thin sanitary napkin or a sheet of a cage is cited in addition to a panty liner.

  In each said embodiment, although the absorption layer A was comprised only from the surface sheet 2, an absorption layer can be comprised from the laminated body of a surface sheet and an absorber. That is, it can be set as the structure by which the liquid holding | maintenance absorber was distribute | arranged between the surface sheet and the back surface sheet.

Thus, in the panty liner having the absorption layer, the absorber does not need to have a high absorption capacity in view of the use of the panty liner. From this viewpoint, it is preferable that the absorber is made of a thin liquid-absorbing material. Moreover, the superabsorbent polymer normally used for the absorbent article may not be blended. As an absorber, the nonwoven fabric of a hydrophilic fiber can be used, for example. The basis weight of the absorbent body, 15~70g / m ^2, it is particularly preferably 20 to 40 g / m ² approximately.

  Moreover, in the use called a panty liner, it is usually desirable that the absorbent body is made of a single nonwoven fabric. It is also possible to use a plurality of nonwoven fabrics as long as the texture is not impaired. In this case, it is desirable that the total basis weight of the nonwoven fabric be within the above range. As a nonwoven fabric which comprises an absorber, various nonwoven fabrics or those combinations can be used suitably according to a fiber composition and the characteristic of the target panty liner like a surface sheet.

1A and 1B are diagrams showing a panty liner as an embodiment of the first invention of the present invention, in which FIG. 1A is a perspective view and FIG. 1B is a central longitudinal sectional view in the width direction along the longitudinal direction. FIG. 2 is a bottom view of the panty liner shown in FIG. FIGS. 3A and 3B are diagrams showing a top sheet in the panty liner shown in FIG. 1, wherein FIG. 3A is a longitudinal sectional perspective view, and FIG. 3B is a BB sectional view shown in FIG. 4 (a) and 4 (b) are perspective views sequentially illustrating a process of forming the panty liner shown in FIG. 1 into a disposal form. FIG. 5A and FIG. 5B are partially enlarged side views showing modifications of the gripping portion of the shape-retaining strip. FIG. 6 is a bottom view (corresponding to FIG. 2) showing a modification of the first invention of the present invention. 7A and 7B are views showing a panty liner as an embodiment of the second invention of the present invention. FIG. 7A is a perspective view, and FIG. 7B is a bottom view (corresponding to FIG. 2). FIG. 8 is a bottom view showing a process of forming the panty liner shown in FIG. 7 into a disposal form.

Explanation of symbols

1 Panty liner (absorbent article)
DESCRIPTION OF SYMBOLS 10 Absorbent main body 11 Main body main part 12 Main body gripping part 13 Cut off line 2 Top sheet 3 Back sheet 31 Strip exposure hole 5 Peripheral part 6 Shape-retaining strip 61 One end part (gripping part)
62 Other end portion 63 Strip fixing portion 64 Second strip fixing portion 7 Adhesive portion A Absorbing layer B Leakproof layer C Interlayer

Claims (5)

A thin and long absorbent main body having a thickness of 0.5 to 2 mm formed by laminating an absorbent layer and a leak-proof layer, and a shape-retaining strip extending in the longitudinal direction of the absorbent main body,
The shape-retaining strip is disposed between the absorbent layer and the leak-proof layer in the absorbent main body,
One end of the shape-retaining strip is exposed from the interlayer to form a gripping part,
An absorbent article in which the other end of the shape-retaining strip is fixed between the layers.   The absorbent article according to claim 1, wherein an adhesive portion is provided in the grip portion of the shape-retaining strip.   The absorbent article according to claim 2, wherein the adhesive portion also serves as a slip stopper. A thin and long absorbent main body having a thickness of 0.5 to 2 mm formed by laminating an absorbent layer and a leak-proof layer, and a shape-retaining strip extending in the longitudinal direction of the absorbent main body,
The shape-retaining strip is disposed between the absorbent layer and the leak-proof layer in the absorbent main body,
The absorbent main body has a separation line, and by cutting the separation line, the main body part and the body gripping part can be separated in the longitudinal direction,
One end of the shape-retaining strip is fixed between the absorbent layer and the leak-proof layer in the main body gripping part,
The other end of the shape-retaining strip is an absorbent article that is fixed between the absorbent layer and the leak-proof layer in the main body main part.   The other end of the shape-retaining strip is fixed between the layers of the absorbent body and the leak-proof layer only in the vicinity of the longitudinal end of the absorbent body. 4. The absorbent article according to any one of 4.

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