JP5371361B2 - Absorbent article and method for manufacturing absorbent article - Google Patents

Description

  The present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and extending laterally from both side edges. The present invention relates to an absorbent article having a flap portion to be manufactured and a method for manufacturing the absorbent article.

  Conventionally, a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and extending from the side edges to the side are formed. Absorbent articles having a flap portion are known.

  Here, when the flap part has low rigidity, such as when the flap part is made of non-woven fabric, the flap part may cause the flap part to be worn by the user on the underwear. There was a problem that it became difficult to do.

In order to solve such a problem, in Patent Document 1, in order to prevent the flap portion (wing portion) from swaying, an absorbent article in which the rigidity of the flap portion is higher than the rigidity of the top sheet and the back sheet. Is disclosed.
JP 2007-14650 A

  However, in the absorbent article described in Patent Document 1, since the rigidity of the entire flap portion is increased, there is a problem that when the user attaches the absorbent article to the underwear, it is difficult to fold the flap portion. there were.

  Moreover, in the absorbent article of patent document 1, the rigidity of the whole flap part improves by providing a predetermined member (wing engaging part 8) between the surface sheet and back sheet which form a flap part. Therefore, there is a problem that the air permeability in the flap portion is deteriorated.

  Then, this invention is made | formed in view of the above-mentioned subject, While improving the rigidity of a flap part, the softness | flexibility and air permeability in a flap part can be improved, and the manufacturing method of an absorbent article The purpose is to provide.

  The first feature of the present invention is an absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet. And a flap portion formed to extend laterally from both side edge portions, wherein the second region consisting of a nonwoven fabric and a sheet smoother than the nonwoven fabric is the second region consisting of only the nonwoven fabric. The gist of the present invention is that it is provided on the outer side in the width direction of the absorbent article with respect to one region.

  The second feature of the present invention is that a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and side edges from both sides A method for producing an absorbent article comprising a flap portion formed to extend to a continuous portion of the top sheet being continuously conveyed between two continuous portions of the flap portion being continuously conveyed A step of forming a first continuous body by joining the continuous body of the topsheet and the continuous body of the two flap portions so that the body is disposed, and the first continuous body being continuously conveyed And joining the continuous body of the back sheet continuously conveyed so as to cover the absorbent body with respect to the continuous body of the top sheet in the first continuous body and the step of arranging the absorbent body , The two flats in the first continuum. Forming a continuous body of the absorbent article by joining a continuous body of the back sheet for the flap part that is continuously conveyed separately from the continuous body of the back sheet to each of the continuous bodies of the section And a step of cutting a continuous body of the absorbent article that is continuously conveyed so as to have a shape of the absorbent article.

  The third feature of the present invention is that a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and side edges from both sides A method for producing an absorbent article comprising a flap portion formed to extend to a continuous portion of the top sheet being continuously conveyed between two continuous portions of the flap portion being continuously conveyed A step of forming a first continuous body by joining the continuous body of the topsheet and the continuous body of the two flap portions so that the body is disposed, and the first continuous body being continuously conveyed The step of disposing the absorber, the step of cutting the continuous sheet of the flap part back sheet that is being continuously conveyed into the shape of the back sheet for the flap part, and the above in the first continuous body With respect to the continuous body of the top sheet, the suction The continuous body of the back sheet that is continuously conveyed is joined so as to cover the body, and the continuous body of the back sheet is separated from the continuous body of the two flap portions in the first continuous body. Then, the step of forming a continuous body of the absorbent article by joining the back sheet for the flap part, and the continuous body of the absorbent article that is continuously conveyed so as to have the shape of the absorbent article And having a step of cutting.

  As described above, according to the present invention, it is possible to provide an absorbent article and a method for manufacturing the absorbent article that can increase the flexibility and breathability of the flap part while increasing the rigidity of the flap part.

(Configuration of absorbent article according to first embodiment of the present invention)
With reference to FIG. 1 thru | or FIG. 3, the structure of the absorbent article which concerns on the 1st Embodiment of this invention is demonstrated. FIG. 1 is a plan view of the absorbent article 100 according to the present embodiment as viewed from the top sheet 1 side (the user's skin contact surface side), and FIG. 2 is the absorbent article 100 according to the present embodiment. FIG. 3 is a cross-sectional view taken along the line AA ′ of the absorbent article 100 according to the present embodiment.

  In the present embodiment, a sanitary napkin is described as a representative of the absorbent article 1 according to the present invention. However, the present invention is not limited to this, and is applied to incontinence pads, diapers, panty liners, and the like. Is also applicable.

  As shown in FIGS. 1 to 3, the absorbent article 100 according to the present embodiment includes a liquid-permeable top sheet 1, a liquid-impermeable back sheet 4, and between the top sheet 1 and the back sheet 4. And the flap portion 9 formed to extend laterally from the side edge portions X.

  Further, as shown in FIGS. 1 to 3, in the absorbent article 100 according to the present embodiment, the flap portion 9 is provided on the back surface side (that is, the non-skin contact surface side or the clothing contact surface side). A back sheet 5 is provided.

  Moreover, as shown in FIG. 1 thru | or FIG. 3, the 2nd sheet | seat 2 may be provided between the surface sheet 1 and the absorber 3 in the absorbent article 100 which concerns on this embodiment.

  For example, the length in the longitudinal direction L of the absorbent article 100 is preferably 100 mm to 500 mm, and more preferably 150 mm to 360 mm. On the other hand, the length in the width direction (short direction) W of the absorbent article 100 including the flap 9 is preferably 30 mm to 200 mm, and more preferably 40 mm to 180 mm.

  The top sheet 1 is made of a sheet-like arbitrary liquid permeable material. For example, the surface sheet 1 may be comprised with the woven fabric, and may be comprised with the nonwoven fabric.

  Moreover, the woven fabric and the nonwoven fabric may be constituted by natural fibers or may be constituted by chemical fibers. Here, examples of the natural fiber include cellulose such as pulverized pulp and cotton. Examples of chemical fibers include regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, thermoplastic hydrophobic chemical fibers, or thermoplastic hydrophobic chemical fibers subjected to hydrophilic treatment. It is done.

  Examples of thermoplastic hydrophobic chemical fibers include single fibers such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET), fibers formed by graft polymerization of PE and PP, and core-sheath structures. A composite fiber is mentioned.

  The second sheet 2 is made of a sheet-like arbitrary liquid permeable material. The material and manufacturing method of the second sheet 2 may be the same as the material and manufacturing method of the top sheet 1.

  In addition, the density of the second sheet 2 may be configured to be higher than the density of the surface sheet 1 so as to easily absorb body fluid from the surface sheet 1.

  Moreover, in order to conceal the body fluid after absorption, the second sheet 2 may be configured to contain more additional elements (described above) than the top sheet 1.

  The absorber 3 is configured so as to be able to retain absorption of liquid (menstrual blood), and is preferably bulky, hardly deformed, and has little chemical stimulation.

  For example, pulverized pulp, cellulose such as cotton, regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, particulate polymer, fibrous polymer, thermoplastic hydrophobic chemical fiber, or hydrophilic treatment The absorber 3 may be formed by mixing thermoplastic hydrophobic chemical fibers, chemically bonded airlaid pulp, or the like alone or in combination.

  The back sheet 4 includes a film mainly composed of PE or PP, a resin film having air permeability, a resin film having air permeability bonded to a nonwoven fabric such as spunbond or spunlace, and a plurality of SMS. You may be comprised by the layered thing.

In consideration of the flexibility that does not impair the feeling of wearing, the back sheet 4 may be constituted by, for example, a film obtained from a range of 15 to 30 g / m ² based on a low density polyethylene (LDPE) resin.

  As shown in FIG. 3, the main body adhesive 6 is applied to the non-skin contact surface side (clothing contact surface side) of the back sheet 4 in order to fix the absorbent article 1 and the undergarment. Since it is preferable that the absorbent article 1 and the underwear are fixed at room temperature, a hot-melt adhesive such as a pressure-sensitive adhesive may be used as the main body adhesive 6.

  The main body adhesive 6 is composed of, as a main component, specifically melt-mixed with 15 to 25% of SEBS, 15 to 35% of a plasticizer, and 40 to 70% of a tackifier. . The main body adhesive 6 may be composed of an acrylic adhesive.

Here, the main body adhesive 6 may be applied in a uniform, streak-like or dot-like pattern by a coater coating, a bead coating or the like with a basis weight of 10 to ²⁰⁰ g / m ² .

  The flap portion (side sheet) 9 may be composed of a single PP fiber, low density polyethylene, high density polyethylene, linear polyethylene, PET-high density PE composite type, polyethylene terephthalate, modified polypropylene. Further, it may be composed of a thermoplastic resin such as modified polyethylene terephthalate or nylon, or may be composed of a single or composite fiber of each resin.

  Moreover, you may use the fiber which has a fiber diameter of 2.2 dtex as a material which comprises the flap part 9, and in the part which touches a user's skin, the fiber diameter of the range of 0.1-5.6 dtex You may use the fiber which has.

  Here, in the fibers constituting the flap portion 9, when the fiber diameter is 0.1 dtex or less, the density between the fibers becomes too high, and it is not preferable because the body fluid is easily retained, and the fiber diameter is 5.6 dtex or more. Is unfavorable because the fiber becomes hard and feels bad. In addition, it is more preferable that the fiber diameter of the fiber which comprises the flap part 9 is 1.1-4.4 dtex.

  In addition, as a fiber used for the skin contact surface side of the flap part 9, in order to maintain a soft bulk while preventing fuzz of the fiber by heat fusion, the core sheath structure of the core PET / sheath PE is used. It is preferable that the fiber which has is used.

  The flap portion 9 may be made of a sheet-like material made by a spunbond method, may be made of a laminated structure material by a through-air method, an airlaid method, or a spunbond method, You may be comprised with the material formed into a sheet | seat by the race method, a point bond, a needle punch, etc.

  From the viewpoint of touch and flexibility, the flap portion 9 is preferably made of a material formed by a through air method.

  In addition, the flap portion 9 is such that a heat shrink fiber is used for the lower layer portion of the nonwoven fabric and the upper layer side of the nonwoven fabric is uneven, or the nonwoven fabric is provided with unevenness by applying air during web formation. You may be comprised with the uneven | corrugated nonwoven fabric.

  Since the flap portion 9 covers the underwear, if the body fluid permeates through the flap portion 9, the flap portion 9 may be leaked. Therefore, the flap portion 9 may be coated with a water repellent material, As the flap portion 9, a material having hydrophobicity such as PE or PP may be used, or a material such as SMS that inhibits the permeability of body fluid may be used.

In addition, the weight of the material which comprises this flap part 9 is 5-60 g / m < ² > by itself, and it is more preferable that it is the range of 20-30 g / m < ² >.

In addition, when the fabric weight of the material which comprises the flap part 9 is 5 g / m < ² > or less, the intensity | strength of the flap part 9 will become low too much and the flap part 9 will be damaged when peeling the absorbent article 100 from underwear. There is a risk of remaining in underwear.

On the other hand, if the basis weight of the material constituting the flap part 9 is 60 g / m ² or more, the folds are easily attached, and the rigidity of the flap part 9 becomes too high. When 100 is held, it becomes difficult to realize a state in which the flap portion 9 hangs down.

  In the absorbent article 100 according to the present embodiment, the second region 13 is provided outside the width direction W of the absorbent article 100 with respect to the first region 12 in the flap portion 9.

Specifically, as shown in FIG. 3, the first region 12 is provided in the flap portion 9 at a place where the absorbent article 100 is folded when the absorbent article 100 is attached to the underwear, and is composed of only the nonwoven fabric 90. For example, the first region 12 may be formed by a single span of 18 g / ^{m 2} bond.

  Here, as shown in FIG. 3, the second region 13 is configured by a nonwoven fabric 90 and a flap-side back sheet (for example, a film-like sheet) 5 that is smoother than the nonwoven fabric 90. In addition, the adhesive 7 for flap parts is arrange | positioned at the non-skin contact surface side of the back surface sheet 5 for flap parts.

  Specifically, the SMD value (value indicating the surface roughness) of the flap portion back sheet 5 is smaller than the SMD value of a general nonwoven fabric.

  For example, the SMD value of the flap part back sheet 5 is preferably 1.8 or less, more preferably 1.5 or less, when a single material is measured. Here, when the SMD value is 1.8 or more, the uneven shape on the surface is too large, and air enters between the nonwoven fabric, 90 and the back sheet 5 for the flap part due to the unevenness, and is fixed to the shorts. The adhesive 7 is partially peeled off during coating, and the adhesive 7 remains in the shorts when the flap part 9 is removed from the shorts after use.

  Even if the flap part back sheet 5 is smooth, it is not an aggregate of fibers like a non-woven fabric, but is continuously formed of a single material like a film, or the surface of the non-woven fabric is surface-coated with silicon or the like Is preferred.

  The SMD value can generally be measured with an automated surface tester such as “KES-FB4 AUTO-A” manufactured by Kato Tech Co., Ltd.

  Moreover, it is preferable that the bending angle of the flap part 9 is 240 degrees-300 degrees, and it is more preferable that it is the range of 240 degrees-270 degrees. When the folding angle of the flap portion 9 is 240 ° or less, the flap portion 9 faces upward, so that it is difficult to fold the flap portion 9 into underwear, and the folding angle of the flap portion 9 is 300 ° or less. If it is, there exists a danger that the flap part 9 will adhere to underwear without spreading.

  For example, when the absorbent article 100 is placed on a table having a width similar to the width of the absorbent article 100 as the “bending angle of the flap part”, the end of the table and the flap part 9 You may measure the angle between the straight line which connects a front-end | tip, and the horizontal surface of a stand.

  Here, after maintaining the absorbent article 100 in a horizontal state on the table, the angle between the straight line connecting the end of the table and the tip of the flap portion 9 formed naturally and the horizontal surface of the table is expressed as “ It is good also as "the bending angle of a flap part."

Further, in this embodiment, the flap portion 9 having a basis weight of 5 to 60 g / m ^2, a basis weight in the second region 13 by a 90 g / m ² before and after, may be configured such flap portion 9 hangs .

In addition, it is preferable that the difference of the fabric weight of the 2nd area | region 13 and the 1st area | region 12 is 30 g / m < ² > or more. If the difference in weight per unit area is 30 g / m ² or less, the weight difference between the second region 13 and the first region 12 is not sufficient, and the flap portion 9 does not hang down.

In the present embodiment, the area of the second region 13 is preferably 7 cm ² or more, and more preferably 9 cm ² or more. Here, if the area of the second region 13 is 7 cm ² or less, a weight difference between the second region 13 and the first region 12 necessary for the flap portion 9 to hang down cannot be realized.

  Even if the area of the second region 13 is small, it may be possible to cause the flap portion 9 to hang downward by further increasing the difference in basis weight between the second region 13 and the first region 12. Since the basis weight of the second region 13 is excessive, it is not preferable because it leads to a sense of incongruity while the absorbent article 100 is being worn.

  Further, at least a part of the peripheral portion of the second region 13 provided in the flap portion 9 is provided with a portion (for example, the joint emboss 11) having higher rigidity than the peripheral portion.

  For example, in the present embodiment, the flap portion 9 to the flap portion back sheet 5 are integrated so as to surround the flap portion adhesive 7 by the bonding emboss 11 at the peripheral portion of the second region 13 of the flap portion 9. It has become.

  The joint emboss 11 is provided in order to prevent a situation in which the second region 13 is rolled and fixed by the flap portion adhesive 7 when the flap portion 9 hangs down.

  That is, by increasing the density of the peripheral portion of the second region 13 with the bonding emboss 11 so as to surround the flap portion adhesive 7, the rigidity of the peripheral portion of the second region 13 is increased. Therefore, it is possible to keep the flat state without being damaged, and it is possible to prevent the second region 13 from being stuck by the flap portion adhesive 7.

  In the present embodiment, the joint emboss 11 is arranged so as to surround the flap portion adhesive 7, but the present invention is not limited to such a configuration, and the joint emboss 11 is provided in the second region 13. You may be comprised so that it may arrange | position to a part of peripheral part of.

  Furthermore, if the back surface sheet 5 for the flap part is made of a material having a larger basis weight or rigidity than the back sheet 4, the weight of the second region can be increased, and the rigidity of the second region can be increased. It becomes easy. For example, the back sheet 5 can be achieved by using a material thicker than the back sheet 4 or by stacking a plurality of back sheets.

  Moreover, in this embodiment, since the 1st area | region 12 is formed only with the nonwoven fabric, the softness | flexibility of the flap part 9 can be maintained in the 1st area | region 12 with the space | gap contained in the 1st area | region 12.

  In addition, the fusion part that forms the sheet, such as a nonwoven fabric (for example, an air-through nonwoven fabric or a spunbond nonwoven fabric), is formed with dots (for through air, a fiber entanglement point, for a spunbond, an embossed portion, etc.). In the case of the present invention, it is less likely to be creased and more flexible than a film or the like in which such a fused portion is formed on the surface.

  In addition, as shown in FIG. 3, the nonwoven fabric 90 which comprises the flap part 9 is folded by the non-skin contact surface side in the part which overlaps with the absorber 3, and the folded part A of the nonwoven fabric 90 is a both-sides edge. It extends outside the part X in the width direction W of the absorbent article 100.

  In addition, the base portion of the flap portion 9 is particularly likely to be pulled when it is attached to or removed from shorts, so that it is easily broken when the strength of the material is weak. However, by extending outward in the width direction, a plurality of non-woven fabrics are laminated on the base portion of the flap portion 9, whereby the strength is increased and it is difficult to break.

(Method for manufacturing absorbent article according to first embodiment of the present invention)
Hereinafter, with reference to FIG. 4 thru | or FIG. 6, the manufacturing method of the absorbent article 100 which concerns on this embodiment is demonstrated easily.

  With reference to FIG. 4, Example 1 of the manufacturing method of the absorbent article 100 which concerns on this embodiment is demonstrated, and Example 2 of the manufacturing method of the absorbent article 100 which concerns on this embodiment is demonstrated with reference to FIG. And Example 3 of the manufacturing method of the absorbent article 100 which concerns on this embodiment is demonstrated with reference to FIG.

  As shown in FIG. 4, first, the continuous body 1 </ b> A of the top sheet 1 that is continuously transported is disposed between the continuous bodies 9 </ b> A <b> 1 and 9 </ b> A <b> 2 of the two flap portions (nonwoven fabrics) 90 that are transported continuously. Thus, the 1st continuous body is formed by joining the continuous body 1A of the surface sheet 1, and the continuous bodies 9A1 and 9A2 of the two flap parts (nonwoven fabric) 90.

  Second, the absorber 3 is disposed on the first continuous body that is continuously conveyed.

  3rd, while joining the continuous body 4A of the back surface sheet 4 conveyed continuously so that the absorber 3 may be covered with respect to the continuous body 1A of the surface sheet 1 in a 1st continuous body, For each of the continuums 9A1 and 9A2 of the two flap portions (nonwoven fabrics) 90, the continuums 5A1 and 5A2 of the back surface sheet 5 for the flap portion that are continuously conveyed away from the continuum 4A of the back surface sheet 4 are respectively provided. By joining, a continuous body of the absorbent article 100 is formed.

  Here, the continuous body 1A of the top sheet 1 and the continuous body 4A of the back sheet 4 are joined by the adhesive 41 applied to the continuous body 4A of the back sheet 4, and a continuous body 9A1 of the flap portion (nonwoven fabric) 90, Each of 9A2 and the continuums 5A1 and 5A2 of the flap part back sheet 5 are joined by adhesives 51 and 52 applied to each of the continuums 5A1 and 5A2 of the flap part back sheet 5.

  4thly, the continuous body of the absorbent article currently conveyed continuously is cut | disconnected by the product cutter 40 so that it may become the shape of the absorbent article 100. FIG.

  By manufacturing in this way, the absorptive article 100 can be manufactured simply, for example, it is also possible to change the materials and fastening materials of the flap part back sheet 5 and the back sheet 4.

  As shown in FIG. 5, first, the continuous body 1 </ b> A of the top sheet 1 that is continuously transported is disposed between the continuous bodies 9 </ b> A <b> 1 and 9 </ b> A <b> 2 of the two flap portions (nonwoven fabrics) 90 that are continuously transported. Thus, the 1st continuous body is formed by joining the continuous body 1A of the surface sheet 1, and the continuous bodies 9A1 and 9A2 of the two flap parts (nonwoven fabric) 90.

  Second, the absorber 3 is disposed on the first continuous body that is continuously conveyed.

  Thirdly, the continuous parts 5A1 and 5A2 of the flap part back sheet 5 being continuously conveyed are cut by the cutter 50 so as to have the shape of the flap part back sheet 5.

  4thly, the cut | disconnected flap part back surface sheet 5 is joined with respect to each of continuous body 9A1, 9A2 of the two flap parts (nonwoven fabric) 90 in a 1st continuous body.

  Fifth, the absorbent article 100 is obtained by joining the continuous body 4A of the back sheet 4 that is continuously conveyed so as to cover the absorbent body 3 to the continuous body 1A of the top sheet 1 in the first continuous body. To form a continuum of

  6thly, the continuous body of the absorbent article currently conveyed continuously is cut | disconnected so that it may become a shape of an absorbent article with the product cutter 40 (not shown).

  In addition, the conveyance speed of the back surface sheet 5 for flap parts is set slower than the conveyance speed of the continuous bodies 9A1 and 9A2 of the two flap parts (nonwoven fabrics) 90 in the first continuous body, and is cut to a position corresponding to the flap part 90. Further, the flap part back sheet 5 is arranged, and the material of the flap part back sheet 5 can be used efficiently without waste.

  As shown in FIG. 6, first, a continuous part 5A of the back sheet 5 for flap part that is continuously conveyed is cut into a shape 5B by a cutter 50, and a flap part ( The non-woven fabric) 90 is disposed in a region near the center line in the transport direction of the continuous body 9A.

  Here, the shape 5 </ b> B and the continuous body 9 </ b> A of the flap part (nonwoven fabric) 90 are joined by the adhesive 51 applied to the continuous body 5 </ b> A of the flap part back sheet 5.

  Secondly, the continuous body 9A of the flap part (nonwoven fabric) 90 in which the shape 5B is arranged by the cutter 95 is divided into two along the center line in the transport direction, whereby the continuous body 9A1 of the flap part (nonwoven fabric) 90 is obtained. , 9A2.

  Thirdly, after the transport positions of the continuous bodies 9A1 and 9A2 of the flap part (nonwoven fabric) 90 are switched, the top sheet 1 continuously transported between the continuous bodies 9A1 and 9A2 of the two flap parts (nonwoven fabric) 90 The first continuous body is formed by joining the continuous body 1A of the top sheet 1 and the continuous bodies 9A1 and 9A2 of the two flap portions (nonwoven fabrics) 90 so that the continuous body 1A is disposed.

  4thly, the absorber 3 is arrange | positioned on the 1st continuous body currently conveyed continuously.

  Fifth, the absorbent article 100 is obtained by joining the continuous body 4A of the back sheet 4 that is continuously conveyed so as to cover the absorbent body 3 to the continuous body 1A of the top sheet 1 in the first continuous body. To form a continuum of

  6thly, the continuous body of the absorbent article 100 currently conveyed is cut | disconnected so that it may become the shape of the absorbent article 100 with the product cutter 40 (not shown).

  The continuous part 9A of the flap part (nonwoven fabric) 90 in which the shape 5B is arranged in advance is divided into two along the center line in the conveyance direction in the middle, so that the back part sheet 5 for the flap part is conveyed rather than separately conveyed. The flap portion (nonwoven fabric) 90 is not easily displaced, and the material for the back portion sheet 5 for the flap portion can be used efficiently without waste.

(Operations and effects of the absorbent article according to the first embodiment of the present invention)
According to the absorbent article 1 according to the first embodiment of the present invention, the second region 13 is provided outside the first region 12 in the width direction W of the absorbent article 100 in the flap portion 9. Therefore, when the flap part 9 is fastened to the undergarment, the flap part 9 can be easily folded in order to hang down naturally to the underwear side, and the time and labor until the flap part 9 is folded and fastened are reduced. can do.

  Moreover, according to the absorbent article 1 which concerns on the 1st Embodiment of this invention, since the area | region (1st area | region) which the flap part 9 folds is formed only with the nonwoven fabric, the air permeability in this 1st area | region is improved. It is possible to reduce the stuffiness during wearing of the absorbent article 100 and to increase the comfort.

  According to the absorbent article 1 which concerns on the 1st Embodiment of this invention, since the peripheral part of the 2nd area | region 13 has higher rigidity than a peripheral part, when fixing the flap part 9 to underwear, it is 2nd area | region. 13 can be prevented from occurring, so that the correction time when the absorbent article 100 is mounted can be reduced, and the flap portion adhesive 7 remains bonded to the underwear while being joined together. Therefore, it is possible to reduce mounting mistakes such as product peeling due to insufficient adhesive force, and to increase convenience.

  Moreover, according to the absorbent article 1 which concerns on the 1st Embodiment of this invention, the material which comprises the back surface sheet 4 is made into a material with high air permeability, the back surface sheet 5 for flap parts is made non-breathable, and the whole The cost can be greatly reduced as compared with the use of a material having high air permeability.

(Second Embodiment)
With reference to FIG. 7, the absorbent article 100 which concerns on the 2nd Embodiment of this invention is demonstrated. Hereinafter, the absorbent article 100 according to the second embodiment of the present invention will be described by focusing on differences from the absorbent article 100 according to the first embodiment of the present invention.

  As shown in FIG. 7, the bonding emboss 11 </ b> A may be provided intermittently at the peripheral edge of the second region 13.

  Moreover, the joint embossing 10A which integrates the flap part 9 and the back surface sheet 4 may also be provided intermittently.

  By comprising in this way, the simplicity of mounting | wearing of the absorbent article 100 is realizable, without raising the rigidity of the 2nd area | region 13 too much.

(Third embodiment)
With reference to FIG.8 and FIG.9, the absorbent article 100 which concerns on the 3rd Embodiment of this invention is demonstrated. Hereinafter, the absorbent article 100 according to the third embodiment of the present invention will be described by focusing on differences from the absorbent article 100 according to the first embodiment of the present invention.

  The absorbent article 100 according to the present embodiment is different from the absorbent article 100 according to the first to third embodiments described above, which is supposed to be provided in a daytime sanitary napkin, and is used for night physiology. Since it is assumed to be applied to a napkin for use, as shown in FIGS. 8 and 9, a flap portion 17 is also provided in the rear portion in order to reduce leakage on the rear side.

  The flap part 9 provided in the front part is folded to the clothes contact surface side of the underwear, whereas the flap part 17 provided in the rear part is tried on the skin contact surface side of the underwear.

  In the present embodiment, the first region 12 is provided at the root portion of the flap portion 9 in the front portion and the flap portion 17 in the rear portion.

  Therefore, it is desirable that the flap portion 9 at the front portion can be easily attached to the underwear by hanging down, as in the first to third embodiments, but the flap portion 17 at the rear portion is flat without being drooped. It is desirable that

  Therefore, the flap portion 17 in the rear portion is provided with a rigidity embossing 18 that connects the second region 13 and the absorbent article 100 main body so as to straddle the first region 12.

  Thus, by providing the rigidity-imparting emboss 18 in the front region and the vicinity of the rear region of the flap portion 17 in the rear portion, the flap portion 17 in the rear portion is prevented from sagging in the first region 12 and the wearability is improved. I am letting.

  In the present embodiment, more rigid embosses may be provided, or one thick rigid emboss (providing all the first regions 12 facing the flap portion 17 in the rear part) is provided. Alternatively, another member may be attached only to the rear portion to increase the basis weight of the first region 12.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

It is the top view seen from the surface sheet side of the absorptive article concerning a 1st embodiment of the present invention. It is the top view seen from the back sheet side of the absorptive article concerning a 1st embodiment of the present invention. It is an AA sectional view of an absorptive article concerning a 1st embodiment of the present invention. It is a figure for demonstrating an example of the manufacturing method of the absorbent article which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating an example of the manufacturing method of the absorbent article which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating an example of the manufacturing method of the absorbent article which concerns on the 1st Embodiment of this invention. It is the top view seen from the surface sheet side of the absorptive article concerning a 2nd embodiment of the present invention. It is the top view seen from the surface sheet side of the absorptive article concerning a 3rd embodiment of the present invention. It is the top view seen from the surface sheet side of the absorptive article concerning a 3rd embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Absorbent article 1 ... Top sheet 2 ... Second sheet 3 ... Absorber 4 ... Back sheet 5 ... Flap part back sheet 6 ... Main body adhesive 7 ... Flap part adhesive 9 ... Flap parts 10, 11 ... Joining Emboss 12 ... 1st field 13 ... 2nd field

Claims (4)

An absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet,
It comprises a flap portion that is formed extending laterally from both side edges of the top sheet and the back sheet ,
In the flap part, the second region made of a nonwoven fabric and a sheet smoother than the nonwoven fabric is provided on the outer side in the width direction of the absorbent article with respect to the first region made only of the nonwoven fabric ,
The non-woven fabric constituting the flap part is folded to the non-skin contact surface side at a portion overlapping with the absorber,
The folded part of the nonwoven fabric extends to the outside in the width direction of the absorbent article from the side edges .   The absorbent article according to claim 1, wherein a portion having higher rigidity than the peripheral portion is provided in at least a part of the peripheral portion of the second region. A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and laterally from both side edges of the top sheet and the back sheet It is a manufacturing method of an absorptive article which comprises a flap part formed by extending,
The continuous body of the top sheet and the continuous body of the two flap sections so that the continuous body of the top sheet being transported continuously is disposed between the continuous body of the two flap sections transported continuously. Forming a first continuum by bonding
Placing the absorber on the first continuous body being continuously conveyed; and
The continuous body of the back sheet that is continuously conveyed is joined to the continuous body of the top sheet in the first continuous body so as to cover the absorber, and the two flaps in the first continuous body Forming a continuous body of the absorbent article by joining a continuous body of the back sheet for the flap part that is continuously conveyed separately from the continuous body of the back sheet to each of the continuous bodies of the section When,
The continuous body of the absorbent article being continuously conveyed, possess and cutting so that the shape of the absorbent article,
In the absorbent article, the nonwoven fabric constituting the flap portion is folded to the non-skin contact surface side at a portion overlapping the absorber, and the folded portion of the nonwoven fabric is more than the side edge portions. method of manufacturing an absorbent article which is characterized that you have outwardly extending in the width direction of the absorbent article. A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and laterally from both side edges of the top sheet and the back sheet It is a manufacturing method of an absorptive article which comprises a flap part formed by extending,
The continuous body of the top sheet and the continuous body of the two flap sections so that the continuous body of the top sheet being transported continuously is disposed between the continuous body of the two flap sections transported continuously. Forming a first continuum by bonding
Placing the absorber on the first continuous body being continuously conveyed; and
Cutting the continuous sheet of flap part back sheet being continuously conveyed so as to have the shape of the flap part back sheet;
The continuous body of the back sheet that is continuously conveyed is joined to the continuous body of the top sheet in the first continuous body so as to cover the absorber, and the two flaps in the first continuous body Forming a continuous body of the absorbent article by bonding the back surface sheet for the flap part apart from the continuous body of the back sheet, for each of the continuous body of parts,
The continuous body of the absorbent article being continuously conveyed, possess and cutting so that the shape of the absorbent article,
In the absorbent article, the nonwoven fabric constituting the flap portion is folded to the non-skin contact surface side at a portion overlapping the absorber, and the folded portion of the nonwoven fabric is more than the side edge portions. method of manufacturing an absorbent article which is characterized that you have outwardly extending in the width direction of the absorbent article.

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