JP5650967B2 - Absorbent article and body fluid absorbent article using the absorbent article - Google Patents

Description

  The present invention relates to an absorbent article having both durability capable of withstanding continuous use for a certain period of time using an inner as a separate absorbent pad and absorption performance capable of withstanding use alone. The present invention relates to a body fluid absorbing article such as a disposable paper diaper using a sexable article.

  Traditionally, pants-type paper diapers, flat-type paper diapers, incontinence pads, sanitary napkins, etc. have been widely provided as body fluid-absorbing articles using absorbent articles. It is an indispensable item. These absorbent articles basically have a configuration in which an absorbent body is interposed between a liquid-impermeable sheet and a liquid-permeable top sheet in order to absorb body fluid such as urine and watery stool.

  For example, disposable pants-type disposable diapers are provided for a wide range of uses from infants to adults, and are widely used as daily consumables not only at home but also in hospitals, various nursing care facilities, nursing facilities, and the like. And recently, considering cost, environmental aspects, and worker efficiency, instead of using disposable disposable diapers alone, they are also used in combination with an inner absorbent pad that is a separate absorbent article. After use, only the inner that has absorbed body fluids is replaced, and disposable disposable diapers are maintained for a certain period of time. Specifically, the inner replacement style is used continuously for 3 to 4 days according to the bathing interval. It has become. That is, the disposable paper diaper has a role as a diaper cover. Recently, a plurality of inners having different sizes are also used in combination.

  In addition, as a basic configuration of the absorbent article, a second sheet is interposed between the liquid-permeable top sheet and the absorbent body to prevent the bodily fluid once absorbed by the absorbent body from returning due to the movement of the wearer's body. The structure made to adopt is also adopted. This second sheet acts as a body fluid diffusion sheet that receives the body fluid that has entered through the liquid-permeable top sheet and moves it to the absorbent body to absorb it, and at the same time, prevents reversal.

  Absorbent articles employing various non-woven fabrics are provided as the second sheet. For example, an air-through non-woven fabric is used (Patent Document 1), a short fiber non-woven fabric having a fiber length of 38 to 90 mm, and a short fiber having a fiber length of 3 to 30 mm. An example of using a composite nonwoven fabric having at least two layers bonded with a fiber nonwoven fabric is provided (Patent Document 2).

Japanese Patent No. 4164416 Japanese Patent No. 4324982

  In various nursing care facilities, nursing facilities, or current nursing care environments at home, disposable disposable diapers can be used for a certain period of time by using an inner together in terms of human labor, cost, and environment. Must be premised on a usage pattern of repeated use for about 3 to 4 days.

  Therefore, there is a need for a disposable diaper that is thinner than the absorbent performance itself so that it can be used together with an inner, and that is durable and can be used repeatedly by replacing the inner. Modern disposable paper diapers are durable by reducing the amount of the absorbent body and making it thinner so that the absorbent body is not damaged and twisted or displaced due to the movement of the wearer's body during continuous use. Products with improved quality have become mainstream.

  However, it is not always used in combination with the inner. Before changing disposable disposable diapers after a certain period of time or after taking a bath, etc. Absorption and retention of the discharged body fluid is performed. In this case, the disposable paper diaper whose thickness is improved by thinning the absorbent body is thin and inferior in use feeling and has insufficient absorption performance, and there is a risk of liquid leakage.

  On the other hand, a thick disposable paper diaper equipped with a sufficient amount of absorbent material suitable for single use has a good texture and feeling of use, but if it is used continuously for a certain period with the inner, it absorbs. Since the body has a necessary and sufficient absorption amount as a single body, the absorbent body often breaks due to the movement of the wearer's body during continuous use, and loses its durability. Become. Therefore, it is not suitable for the current usage pattern in which the inner is used together.

  Since the disposable paper diaper is a body fluid absorbent article, the applicant quickly absorbs bodily fluids such as excreted urine and watery stool into the absorbent body even if the inner is used alone, that is, without using the inner. We believe that it is essential to have basic performance that does not leak or ooze out. For that purpose, if a necessary and sufficient amount of absorber is provided, the feeling of use and the absorption performance are improved. However, by using the inner together, the absorbent body is damaged due to the movement of the wearer's body, etc. while being repeatedly used for a certain period of time. Become. On the other hand, if the amount of the absorber is reduced and thinned, the durability is improved, but the feeling of use is poor and the disposable disposable diaper is not suitable for use alone.

  Note that the second sheets in Patent Documents 1 and 2 are intended to improve the diffusibility of body fluids when used alone and to prevent reversal. For this reason, it is possible to contribute to maintaining the absorption performance by preventing the body fluid that has been absorbed once from reversing when used alone, but it is not intended to increase the absolute absorption amount itself. For this reason, the second sheet cannot solve the above-mentioned problems of durability when using the inner together and maintaining absorption performance when used alone.

  Therefore, the applicant solves these conflicting problems at the same time, maintains sufficient absorption performance that can withstand use alone, and at the same time provides both durability that can be used for a certain period of time together with the inner. It is an object of the present invention to provide an absorbent article provided and a body fluid absorbent article such as a disposable paper diaper using the absorbent article.

  The present inventor considered that it is necessary to presuppose that at least a necessary and sufficient amount of absorber is provided in order to realize both the absorption performance and the durability shown in the above-described problem. Therefore, based on this premise, the absorbent article can be used so that the absorbent body is not damaged by the movement of the wearer's body, etc., when it is repeatedly used for a certain period, specifically about 3 to 4 days. Although means for fixing the absorber by applying heat embossing was adopted, this heat embossing alone was insufficient to prevent damage to the absorber.

  Therefore, in addition to hot embossing, means were used to firmly fix each component of the liquid-impervious sheet, absorber, and liquid-permeable top sheet with a hot melt adhesive. When the hot melt adhesive is applied, the hot embossing roll at the time of hot embossing is heated to 70 ° C. to 90 ° C., so that the hot melt adhesive oozes from the liquid-permeable top sheet depending on the temperature at the time of hot embossing, A new problem of sticking to the hot embossing roll and tangling occurred. Furthermore, the applicant pays attention to the second sheet used as the body fluid diffusion sheet that receives the body fluid that has entered through the liquid-permeable top sheet and transfers it to the absorbent body to absorb the second sheet made of tissue paper. Before the liquid permeable top sheet is fixed, it is interposed between the absorbent body and the liquid permeable top sheet, and hot embossing is performed on the second sheet to prevent the hot melt adhesive from exuding. Tried.

  As a result, the second sheet made of tissue paper having a certain thickness was able to prevent the hot melt adhesive from oozing out by hot embossing. However, the tissue paper is destroyed by the movement of the wearer's body in the wet state when the body fluid is absorbed, and it is difficult to absorb and hold the body fluid discharged about 1 to 3 times.

  Furthermore, as a second sheet, a second sheet made of an air-through nonwoven fabric shown in Patent Document 1 was also tried, but the air-through nonwoven fabric is bulky and has strength when wet, but the density is low and a hot melt adhesive is applied. Thus, when hot embossing in the temperature range of 70 ° C. to 90 ° C. is performed, it was not possible to prevent the hot melt adhesive from exuding.

  Based on these trials, the present inventor can simultaneously apply heat embossing and strong fixing with a hot melt adhesive in order to impart durability to the absorber when a necessary and sufficient amount of absorber is equipped. We came up with the idea that it was necessary, and conducted extensive research on a member that could prevent hot-melt adhesive bleeding, enable heat embossing, and maintain durability when wet.

  In the course of the research, the inventors focused on airlaid nonwoven fabrics and compared the tensile strength when dried and wet with tissue paper that had a certain effect on preventing exudation of hot melt adhesive. . The results are shown in Table 1. In addition, the measuring method measured the sample of the width of 25 mm with the distance between chuck | zippers of 100 mm, load cell rating 49N, and test speed 150mm / min.

  As shown in Table 1, when the tissue paper is wet, that is, the tensile strength after absorbing bodily fluids, particularly the tensile strength in the longitudinal direction is 8.53 N when dried, 4.01 N when wet, and less than 1/2 It has dropped to. Further, the tensile strength in the width direction is lower than that in the longitudinal direction even during drying. This confirms that the tissue paper was destroyed by the movement of the wearer's body when wet when the body fluid was absorbed.

  On the other hand, the tensile strength when wet of the airlaid nonwoven fabric is only slightly decreased from 10.8N to 9.11N in the longitudinal direction compared with the tensile strength when drying, and the tensile strength in the width direction is reduced. The strength increases from 8.92N to 10.8N. For this reason, the air-laid nonwoven fabric has durability that is not easily destroyed by the movement of the wearer's body when wet when absorbing body fluids. Next, in order to confirm that the air laid nonwoven fabric can prevent the hot melt adhesive from oozing out during hot embossing, a comparative test was conducted on the absorption performance of the tissue paper and the air laid nonwoven fabric. The results are shown in Table 2. The measurement method was performed as follows.

[Product weight]
The weight of the sample was measured using an electronic balance to obtain a sample having the same weight.

[Absorption rate]
The time until the sample absorbed 200 ml of physiological saline (0.9%) was measured, and the fractional part was rounded off to obtain the absorption time.

[Return amount]
The measurement was performed by the following procedure.
(1) The weight of about 100 sheets of 100 mm × 100 mm crepe paper was measured. Measurement value: a (however, 50 g or more)
(2) The sample after the absorption rate was measured was allowed to stand for 10 minutes, and then placed on crepe paper, and a weight (20 Kg) was further placed on it for 5 minutes.
(3) Thereafter, the weight and the sample were removed, and the weight of the crepe paper was measured. Measurement value: b
(4) The value obtained by subtracting the measured value a from the measured value b was rounded off to the return amount.

  As shown in Table 2, the air laid nonwoven fabric has an absorption rate improved from 40 seconds to 37 seconds and the amount of reversion decreased from 56 g to 38 g as compared with tissue paper, and the air laid nonwoven fabric has heat resistance. Therefore, it has been found that the hot melt adhesive can be effectively prevented from oozing out even at a temperature of 70 ° C. to 90 ° C. during hot embossing.

As a result, in order to achieve the above object, in an absorbent article in which an absorbent body is interposed between a liquid-impervious sheet and a liquid-permeable top sheet, a hot melt adhesive is interposed on the absorbent body. Based on an absorbent article that fixes a second sheet made of air-laid nonwoven fabric, heat embosses from the top of the second sheet, and then fixes a liquid-permeable top sheet on the second sheet via a hot melt adhesive. provide. In addition, an absorbent body is disposed on the liquid-impervious sheet, a second sheet made of an airlaid nonwoven fabric is disposed on the absorbent body, and the liquid-impervious sheet and the absorbent body, and between the absorbent body and the second sheet are disposed. Provided is an absorbent article in which each is fixed with a hot-melt adhesive and subjected to hot embossing from above the second sheet, and then a liquid-permeable top sheet is fixed on the second sheet via the hot-melt adhesive .

Then, the air-laid nonwoven fabric, the configuration containing the heat fusible synthetic fibers, the air-laid nonwoven fabric, the thermally fusible synthetic fiber fluff pulp having a core-sheath structure as a raw material, synthetic fibers and pulp fibers The first layer and the third layer located outside are composed of 90% by weight of synthetic fibers and 10% by weight of pulverized pulp, and the second layer located in the middle is 40% by weight of synthetic fibers. %, Composition comprising 60% by weight of pulverized pulp, composition using a mixed fiber of polypropylene and polyethylene terephthalate, or mixed fiber of polyethylene terephthalate and polyethylene as the synthetic fiber, basis weight of the first layer and the third layer and ^{6g / m 2 ~8g / m 2} , to provide a configuration in which the basis weight of the second layer and ^{11g / m 2 ~14g / m 2} .

The configuration for performing the heat embossing in a temperature range of 70 ° C. to 90 ° C., by the air-laid nonwoven fabric, configured to prevent the exudation from the second sheet of the hot-melt adhesive by heat during hot embossing, and the air-laid The structure which improved the durability at the time of absorption by the nonwoven fabric is provided.

Further, a bodily fluid absorbent article using the absorbent article having the above-described configuration, and a bodily fluid absorbent article using the absorbent article in which the absorbent article is disposed on a base material using the absorbent article having the above-described configuration. , and the body fluid absorbent article is to provide pants-type diapers, a flat type disposable diaper, a configuration is incontinence pads or sanitary napkins.

  According to the present invention, a second sheet made of an air-laid nonwoven fabric is interposed between the liquid-permeable top sheet and the absorbent body, so that an amount of hot melt necessary and sufficient to firmly fix the second sheet and the absorbent body. Even when hot embossing in a temperature range of 70 ° C. to 90 ° C. is performed from above the second sheet with the adhesive interposed, the hot melt adhesive does not ooze out from the second sheet. Therefore, the absorber and the second sheet can be firmly fixed by applying the heat embossing process from above the second sheet and the synergistic effect of the hot melt adhesive. Moreover, since hot embossing is performed before fixing the liquid-permeable top sheet, the hot melt adhesive interposed between the second sheet and the liquid-permeable top sheet does not ooze out from the liquid-permeable top sheet.

  Therefore, it is possible to impart sufficient durability for use as an inner replacement style that is used continuously for a certain period with the inner interposed in a state in which a necessary and sufficient amount of absorber is provided. On the other hand, before changing disposable disposable diapers after using for a certain period of time or after bathing as an inner replacement style, use it alone without using an inner, and absorb and retain body fluids discharged about 1 to 3 times. Can do. For this reason, it is possible to simultaneously have both sufficient absorption performance that can withstand use alone and durability that can be used for a certain period of time by using the inner together.

The principal part cross-sectional view of the absorbent article concerning this invention. The principal part longitudinal cross-sectional view of the absorbent article concerning this invention. The principal part sectional drawing which shows the structure of the 2nd sheet | seat concerning this invention.

  Embodiments of an absorbent article according to the present invention and a body fluid absorbent article using the absorbent article will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of main parts of an absorbent article 1 according to the present invention, and FIG. 2 is a vertical cross-sectional view of main parts. In the figure, 2 is a liquid-impervious sheet made of polyethylene, polypropylene, etc., for preventing body fluids such as urine and watery stool absorbed by the absorbent article 1 from being leaked to the outside. To the extent, body fluids are not permeable. 3 is a liquid-permeable top sheet made of polyethylene, polypropylene, polyethylene terephthalate, rayon, cotton or the like.

  4a is a 1st absorber, 4b is a 2nd absorber, and both are laminated | stacked and the absorber 4 is comprised. Reference numeral 5 denotes a tissue paper covering the first absorbent body 4a. In the illustrated example, the first absorber 4a and the second absorber 4b are divided into two layers, but a single layer structure or a multilayer structure of three or more layers may be used. The absorbent body 4 is made of pulverized pulp or a highly water-absorbent resin, and absorbs and retains body fluids such as excreted urine and watery stool. Therefore, body fluids such as urine and watery stool excreted by the absorbent article 1 are quickly absorbed by the absorbent body 4 through the liquid-permeable top sheet 3. In the present invention, the body fluid such as excreted urine and watery stool is quickly absorbed alone without using the inner, and the absorbent body 4 is provided in a necessary and sufficient amount enough to hold about 1 to 3 body fluids. .

  Reference numeral 6 denotes a liquid-impervious side sheet, in which the liquid-impervious sheet 2 and the liquid-permeable top sheet 3 are integrally connected in the longitudinal direction and extended in the longitudinal direction of the distal end portion formed as a free end portion. The one or a plurality of elastic bodies 7 are attached to form a rising gather 6a. The liquid-impervious side sheet 6 is suitably made of a water-repellent nonwoven fabric made of polyethylene, polypropylene, polyethylene terephthalate, etc., and the body fluid leaks until the excreted body fluid is absorbed by the absorbent body 4. Can be prevented.

Reference numeral 8 denotes a second sheet made of an air-laid nonwoven fabric, which is interposed between the liquid-permeable top sheet 3 and the absorber 4 (second absorber 4b in the illustrated example). It is a feature of the present invention that a second sheet 8 made of this air laid nonwoven fabric is interposed. An airlaid nonwoven fabric is a nonwoven fabric in which heat-bonded fibers, pulp, etc. are dispersed in the air and bonded by applying heat. For example, a core-sheath synthetic fiber having a fiber length of 1 mm to 10 mm, for example, polypropylene and It is composed of a mixed fiber of polyethylene terephthalate (PP / PET) or a mixed fiber of polyethylene terephthalate and polyethylene (PET / PE) and pulverized pulp, and is composed of a three-layer structure with different mixing ratios of synthetic fiber and pulp fiber. Yes. FIG. 3 is a cross-sectional view of the main part showing the configuration of the second sheet 8. The first layer 8a and the third layer 8c located on the outer side are composed of 90% by weight of synthetic fibers and 10% by weight of pulverized pulp. The two layers 8b are composed of 40% by weight of synthetic fiber and 60% by weight of pulverized pulp. Then, the basis weight of the first layer 8a and the third layer 8c and each ^{6g / m 2 ~8g / m 2} , the basis weight of the second layer 8b and ^{11g / m 2 ~14g / m 2} , the entire second sheet 8 the basis weight of the ^{23g / m 2 ~30g / m 2} .

  Since the second sheet 8 made of the air laid nonwoven fabric has a higher air density than the air-through nonwoven fabric and is close to tissue paper, the hot melt adhesive hardly oozes even when heated. On the other hand, the strength is higher than that of tissue paper even in a dry state or a wet state due to body fluid. Therefore, even if hot embossing is performed after a strong fixation using a hot melt adhesive is performed, the hot melt adhesive does not ooze out. Furthermore, it has the effect of improving the absorption rate of bodily fluids and preventing reversion.

  The absorbent article 1 is configured by interposing an absorbent body 4 in which a first absorbent body 4 a and a second absorbent body 4 b are laminated between a liquid-impervious sheet 2 and a liquid-permeable top sheet 3. Specifically, the absorbent body 4 formed by adhering and laminating the second absorbent body 4b on the first absorbent body 4a wound with the tissue paper 5 via the hot melt adhesive 9a is used as the liquid-impermeable sheet 2. The hot melt adhesive 9a applied in a predetermined range in the width direction and the longitudinal direction is adhered and fixed on the liquid-impermeable sheet 2. Note that the upper and lower surfaces of the first absorbent body 4a are bonded to the tissue paper 5 with hot melt adhesive 9a.

  Similarly, the second sheet 8 made of an air laid nonwoven fabric is similarly applied to the upper surface of the absorbent body 4 (second absorption in the illustrated example) via a hot melt adhesive 9 applied to a predetermined range in the width direction and longitudinal direction of the back surface of the second sheet 8. Adhering and fixing to the upper surface of the body 4b. As described above, the hot-melt adhesive 9, 9a is used to firmly fix the liquid-impermeable sheet 2, the absorbent body 4, and the second sheet 8, and then heated to a temperature range of 70 ° C to 90 ° C. Using the embossing roll, the whole sheet 8 is hot embossed from above. By this heat embossing, the absorbent body 4 can be compacted, and excreted body fluid such as urine and watery stool can be absorbed quickly without using the inner, and the body fluid can be retained for about 1 to 3 times. Durability can be imparted to the necessary and sufficient amount of the absorber 4.

  In this way, hot embossing is performed on the second sheet 8 to sufficiently compact the absorbent body 4, and then the liquid-permeable top sheet 3 coated with the hot-melt adhesive 9 a on the back surface is used as the second sheet 8. Adhere to the top surface of and fix. Further, the base end portion 6b of the liquid-impervious side sheet 6 is bonded and fixed to the upper surfaces of both ends of the liquid-impervious sheet 2 via the hot melt adhesive 9a, and the intermediate portion of the liquid-impervious side sheet 6 is fixed. 6c is bonded and fixed on the absorbent body 4 through the hot melt adhesive 9a.

  When the absorbent article 1 having the above-described configuration is used for a pants-type paper diaper, a flat-type paper diaper, an incontinence pad, a sanitary napkin, or other body fluid absorbent article, an appropriate base material is selected according to the characteristics of the body fluid absorbent article. The absorbent article 1 may be arranged and fixed on (not shown) and the body fluid absorbent article may be completed by a known means. Further, depending on the use of the body fluid absorbent article such as a sanitary napkin, it is possible to make the body fluid absorbent article by using only the absorbent article 1 or in combination with other known members without using a base material.

  Using the absorbent article 1 according to the present invention, M-size disposable paper diapers (Examples 1 to 3) having product weights of 119 g, 121 g, and 123 g were manufactured, and the water retention amount was measured. Further, as a comparative example, the amount of the absorbent was reduced and thinned, and the water retention amount of commercially available M-size disposable paper diapers (Comparative Examples 1 to 3) having a product weight of 91 g and 92 g on the premise of inner use was measured. This difference in product weight is the difference in the amount of absorber. The results are shown in Table 3. Note that physiological saline (0.9%) was used as the liquid to be retained.

  As shown in Table 3, the Examples 1 to 3 according to the present invention have a heavier product weight than the Comparative Examples 1 to 3, that is, the amount of the absorbent 4 is large, and the water retention amount is also high. It has increased significantly. For example, the water retention amount of Comparative Example 1 is 809 g, while the water retention amount of Example 1 is 1411 g, which is improved by about 1.7 times. Therefore, according to Examples 1-3, the bodily fluid discharged | emitted about 1-3 times independently can be absorbed and hold | maintained, without using an inner.

  Table 4 shows the results of measuring the tensile strength of the disposable paper diaper using the absorbent article according to the present invention and the disposable paper diaper using the absorbent article according to the present invention except that the hot embossing was not performed. The measurement method was to sample a 50 mm wide sample with a chuck distance of 100 mm, and a load cell rating of 245 N and a test speed of 200 mm / min.

  As shown in Table 4, the tensile strength of the disposable paper diaper is improved from 37N to 43N by subjecting the absorbent body to hot embossing. It is considered that the improvement of the tensile strength can reduce the destruction of the absorbent body due to the movement of the wearer's body when wet when the body fluid is absorbed. Therefore, before changing disposable disposable diapers after using the inner for a certain period of time or after taking a bath, etc., use it alone without using the inner, and remove the bodily fluid discharged about 1 to 3 times. It can be absorbed and held, and is suitable for use with disposable disposable diapers. That is, it is possible to achieve both durability that can withstand continuous use for a certain period using an inner as an absorbent pad separate from the disposable paper diaper and absorption performance that can withstand use alone.

  In the body fluid absorbent article using the absorbent article 1 or the absorbent article 1 configured as described above, even when the inner is used in combination and continuously used for a certain period of time, due to the synergistic effect of the hot embossing and the hot melt adhesive 9, The absorbent body 4 can be used stably without being damaged by the movement of the wearer's body. In addition, since the second sheet 8 made of an air laid nonwoven fabric is interposed, the hot melt adhesive 9 does not ooze out from the second sheet 8 during hot embossing.

  In addition, even when the absorbent article 1 or body fluid absorbent article is exchanged after use for a certain period of time or after bathing, even when used alone without using an inner, the necessary and sufficient amount of the absorbent body 4 is provided. Therefore, body fluid etc. will not leak. Moreover, even when the second excretion amount is large once, the second sheet 8 can be quickly diffused and absorbed by the absorbent body 4. In addition, the second sheet 8 can prevent backflow of body fluid even when the body pressure of the wearer is applied during use or the absorbent body 4 has already absorbed a certain amount of body fluid and the absorption capacity is reduced. it can.

  As described above in detail, according to the present invention, a second sheet made of an air-laid nonwoven fabric is interposed between the liquid-permeable top sheet and the absorbent, thereby firmly fixing the second sheet and the absorbent. The hot melt adhesive oozes out from the second sheet even when hot embossing in the temperature range of 70 ° C. to 90 ° C. is performed from the top of the second sheet with a necessary and sufficient amount of hot melt adhesive interposed therebetween. There is nothing. Therefore, the absorber and the second sheet can be firmly fixed by applying the heat embossing process from above the second sheet and the synergistic effect of the hot melt adhesive. Moreover, since hot embossing is performed before fixing the liquid-permeable top sheet, the hot melt adhesive interposed between the second sheet and the liquid-permeable top sheet does not ooze out from the liquid-permeable top sheet.

  Therefore, with the necessary and sufficient amount of absorbent body installed, it is durable enough to be used as an inner replacement style that is used for a certain period of time, specifically 3 to 4 days with an inner interposed. can do. On the other hand, before changing disposable disposable diapers after using for a certain period of time or after bathing as an inner replacement style, use it alone without using an inner, and absorb and retain body fluids discharged about 1 to 3 times. Can do. For this reason, it is possible to simultaneously have both sufficient absorption performance that can withstand use alone and durability that can be used for a certain period of time by using the inner together.

DESCRIPTION OF SYMBOLS 1 ... Absorbent article 2 ... Impervious sheet 3 ... Impervious top sheet 4 ... Absorber 5 ... Tissue paper 6 ... Impervious side sheet 7 ... Elastic body 8 ... Second sheet 8a ... First layer 8b ... 2nd layer 8c ... 3rd layer 9, 9a ... Hot melt adhesive

Claims (12)

In an absorbent article having an absorbent body interposed between a liquid-impervious sheet and a liquid-permeable top sheet,
A second sheet made of an airlaid nonwoven fabric is fixed on the absorbent body via a hot-melt adhesive, and heat embossing is performed on the second sheet, and then the liquid is permeable to the second sheet via a hot-melt adhesive. Absorbent article characterized by fixing an adhesive top sheet. In an absorbent article having an absorbent body interposed between a liquid-impervious sheet and a liquid-permeable top sheet,
An absorbent body is placed on the liquid-impervious sheet, a second sheet made of an airlaid nonwoven fabric is placed on the absorbent body, and the liquid-impervious sheet and the absorbent body and between the absorbent body and the second sheet are hot. An absorbent article characterized by being fixed with a melt adhesive , subjected to hot embossing from above the second sheet, and then fixed with a liquid-permeable top sheet via a hot melt adhesive on the second sheet. The absorptive article according to claim 1 or 2 in which said air laid nonwoven fabric contains synthetic fiber of heat fusion nature. The airlaid nonwoven fabric is made of heat-fusible synthetic fibers having a core-sheath structure and pulverized pulp as raw materials, and has a three-layer structure in which the mixing ratio of the synthetic fibers and the pulp fibers is different. The absorbent article according to claim 1 or 2, wherein the three layers are composed of 90% by weight of synthetic fiber and 10% by weight of pulverized pulp, and the second layer located in the middle is composed of 40% by weight of synthetic fiber and 60% by weight of pulverized pulp. The absorbent article according to claim 4, wherein a mixed fiber of polypropylene and polyethylene terephthalate or a mixed fiber of polyethylene terephthalate and polyethylene is used as the synthetic fiber. The basis weight of the first and third layers and ^{6g / m 2 ~8g / m 2} , the absorbent article according to claim 4 or 5, wherein the basis weight of the second layer was ^11g / ^{m 2 ~14g} / m 2 . The absorbent article according to claim 1, 2, 3, 4, 5, or 6, wherein the hot embossing is performed in a temperature range of 70 ° C to 90 ° C. The absorbent article according to claim 1, 2, 3, 4, 5, 6 or 7 , wherein the air laid nonwoven fabric prevents the hot melt adhesive from oozing out from the second sheet due to heat during hot embossing. The absorbent article according to claim 1, 2, 3, 4, 5, 6, 7 or 8 , wherein the air-laid nonwoven fabric has improved durability during absorption. A bodily fluid absorbent article using an absorbent article, wherein the absorbent article according to any one of claims 1 to 9 is used. A body fluid absorbent article using an absorbent article, wherein the absorbent article is disposed on a substrate using the absorbent article according to any one of claims 1 to 9 . The bodily fluid absorbent article using an absorbent article according to claim 10 or 11 , wherein the bodily fluid absorbent article is a pants-type paper diaper, a flat-type paper diaper, an incontinence pad, or a sanitary napkin.

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