JP4712570B2 - Sanitary tampons - Google Patents

Description

  The present invention relates to a sanitary tampon for insertion into the vagina to absorb menstrual blood.

  In recent years, various products have been developed as sanitary tampons. The sanitary tampon has an absorbent body in which an absorbent fiber material is compression-molded into a cylindrical shape, and a cord member that is in contact with the absorbent body and extends to the rear end side of the absorbent body. The absorbent body absorbs menstrual blood by being inserted into. The absorbent body that has absorbed menstrual blood is released from compression and expands to close the vaginal cavity, and then absorbs menstrual blood discharged continuously. The sanitary tampon after use is pulled out of the vagina by pulling a take-out cord extending from the rear end of the absorbent body.

The cord member and the absorbent body are sewn by a thread member composed of an upper thread and a lower thread. Here, when pulling out the sanitary tampon after use to the outside of the vagina, a situation where the user accidentally pulled only the lower thread of the thread member occurred rarely. In this case, there is a possibility that the lower thread is pulled out and the absorbent body and the cord member are separated from each other, causing a trouble that the absorbent body remains in the vagina. In order to prevent the occurrence of such troubles, when the absorbent body and the cord member are sewn, the “double ring stitching” defined in JIS B 9070 is used to sew from the rear end of the cord member toward the front end of the absorbent body. A sanitary tampon was developed. In double chain stitching, when only the lower thread at the end of sewing is pulled when the end seam is released, the lower thread may come off and the entire seam may be unwound. Even if the lower thread is pulled, the entire seam is not unraveled. For this reason, in this sanitary tampon, when the thread member is released at the rear end of the cord member because the sewing start of the double chain stitch is located at the rear end of the cord member, the user may temporarily Even if only the thread was pulled, the entire seam was not unraveled, and the trouble that the cord member and the absorbent body were separated was prevented (see Patent Document 1).
Utility Model Registration No. 2534839

  However, in the sanitary tampon, the cord member is generally sewn in its entirety including the contact portion with the absorbent body (see Conventional Example 1 shown in FIG. 7). When the entire cord member is sewn, the single yarns constituting the cord member are in close contact with each other in the vicinity of the cord member seam, so that the fiber density in the vicinity of the seam increases and a capillary force due to the density gradient is generated. The cord member has an absorption capacity for absorbing menstrual blood. For this reason, in such a sanitary tampon, menstrual blood leaks through the seam existing over the entire cord member (transmission leakage), and the entire cord member may be contaminated by menstrual blood. It was. When the cord member is contaminated by menstrual blood, the fingers may be contaminated by menstrual blood when the rear end portion of the cord member is picked when the sanitary tampon is taken out.

  Further, in the cord member, not only the contact portion with the absorbent body that originally needs to be sewn but also the portion extending from the rear end of the absorbent body that does not need to be sewn, the sanitary tampon is It took a lot of time to sew the cord members. For this reason, there is a problem that productivity is lowered and the amount of the thread member used is also increased.

  Therefore, the present invention provides a sanitary tampon in which an absorbent body and a cord member are brought into contact with each other, and provides a sanitary tampon that does not transmit body fluid and leaks, and is highly productive and uses less material. The purpose is to provide tampons.

  In the tampon absorbent body in which the cord member for extraction is brought into contact with the liquid-absorbing absorbent member, when the absorbent member and the cord member are sewn by the thread member, By preventing at least a part of the portion not in contact with the absorbent member from being sewn, body fluid can be prevented from leaking when using a sanitary tampon formed by compression-molding the tampon absorber. In the tampon, it has been found that productivity is increased and the amount of materials used can be reduced, and the present invention has been completed. Specifically, the present invention provides the following.

  (1) A tampon absorbent body having a liquid-absorbing absorbent member and a pulling cord member abutted against the absorbent member, wherein the cord member abuts against the absorbent member and is at least partially A contact portion having a sewing portion sewn to the absorbing member by a thread member, and an extending portion that forms a drawing region without contacting the absorbing member, and the extending portion Is an absorbent body for a tampon comprising a non-sewn part that is not sewn with the thread member.

  Here, the “tampon absorbent body” refers to an intermediate produced in the manufacturing process of a sanitary tampon, in which the absorbent member of the tampon absorbent body is not compression-molded.

  Further, the “sewn portion” may include a sewn portion that is not sewn to the absorbing member.

  According to the invention of (1), the extension portion of the cord member includes a non-sewn portion that is not sewn with the thread member, and the density of the cord member does not increase at the non-sewn portion, so that the capillary force due to the density gradient is generated. Does not occur. For this reason, even if the menstrual blood is absorbed by the capillary force due to the density gradient at the sewn portion having the feature that the density of the cord member is high, the absorbed menstrual blood extends beyond the low density non-sewn portion. Therefore, the entire cord member is prevented from being contaminated by menstrual blood. Further, since the thread member does not sew the entire cord member, when the sanitary tampon is pulled out after use, all the seams existing in the stitched portion may be unwound by the user pulling the thread member by mistake. Therefore, it is possible to prevent a trouble that the cord member comes off from the absorbing member.

  Furthermore, since the entire cord member is not sewn with the thread member, the time spent for sewing can be shortened to improve productivity, and the sanitary tampon with low production cost can be achieved by reducing the amount of thread member used. Can be provided.

  (2) The absorbent body for a tampon according to (1), wherein the extended portion includes at least one other sewn portion independent of the sewn portion in the abutting portion.

  According to the invention of (2), since the other stitched portions obtained by sewing a part of the extended portion are provided, the single yarns constituting the cord member are fixed to each other at the other stitched portions, and the cord member is completely unwound. Can be prevented. Here, the thread member that sews the sewn portion of the abutting portion and the thread member that sews the other sewn portion of the extended portion may be the same or different.

  (3) The cord member includes one of the other sewing portions in the extension portion, and the sewing portion in the contact portion and the other sewing portion in the extension portion are the non-sewing portions. The absorbent body for tampon according to (2), wherein the absorbent body is formed so as to be separated from each other with the sewing portion interposed therebetween.

  According to the invention of (3), the sewn portion for sewing the absorbent member and the cord member and the other sewn portion are separated from each other with the non-sewn portion interposed therebetween. Capillary force due to the generated density gradient prevents menstrual blood transmitted through the cord member from being transmitted to other stitches beyond the non-sewn portion, and prevents other stitched portions from being contaminated by menstrual blood. . In addition, since the sewn part and the other sewn part are formed so as to be separated from each other, the user should be present in the other sewn part by pulling the thread member that sews the other sewn part. Even if all the seams are unraveled, the seams that exist in the seam are not unraveled, and the state where the absorbent member and the cord member are sewn is maintained, and the cord member comes off from the absorbent member. Can be prevented.

  (4) The tampon absorbent body according to (3), wherein the other sewn portion is formed in the vicinity of a free end of the extended portion.

  Here, the “free end” refers to the end portion of the cord member in the pulling direction of the tampon, and “near the free end” is a predetermined region including the free end and the free end.

  According to the invention of (4), since the vicinity of the free end in the extended portion is sewn by the thread member, the single yarns constituting the cord member are fixed to each other in the vicinity of the free end, and the cord member at the free end is released. Can be prevented.

  (5) The absorbent body for a tampon according to any one of (1) to (4), wherein a ratio of a total length of the sewing portion is 20% to 90%.

  Here, “the total length of the sewing portion” is the total of the total length of the portion sewn by the thread member. For example, in the invention of (1), the total length of the sewing portion is the same as that of the invention of (2). Refers to the total of the total length of the stitched portion and the total length of the other stitched portions.

  Regarding the invention of (5), the amount of menstrual blood changes during one menstrual period of the user. In general, the length and basis weight of the absorbent member are changed in accordance with the change in the amount of menstrual blood. Is used. However, the cord member connected to the absorbing member needs a certain length in order to exert its function. That is, in order for the absorbent member and the cord member to maintain a bonding strength that is greater than the force required when the absorbent member and the cord member are taken out from the body, the ratio of the total length of the stitched portion is required to be 20% or more, and If it is% or less, it is possible to prevent the cord member from being contaminated by the liquid transmitted by the non-sewn portion.

  (6) The absorbing member is a plane arrow-shaped one, and the cord member is attached so that the extending portion extends from the arrow-shaped convex portion (1) to (5) An absorber for a tampon as described above.

  In the invention of (6), increasing the length of the absorption member increases the absorption contact length (the length at which the absorber and the inner wall of the vagina are in contact), and is therefore an effective means for reducing leakage. However, it tends to cause discomfort during use. In this respect, since the length of the absorbent member is extended to be long as in the present invention, the fiber amount and density can be reduced at both the front end and the rear end of the absorbent body after compression molding. , Can prevent the occurrence of discomfort. Moreover, the resistance at the time of taking out can be reduced, and it can pull out easily after use.

  (7) The absorbing member is in a vertically long shape having a longitudinal direction and a transverse direction, and the contact portion of the cord member is arranged along the longitudinal direction, and the contact portion The sewing portion sewn to the absorbing member in at least a part of the contact portion is provided in a portion of the abutting portion excluding a portion that abuts against both end portions in the longitudinal direction of the absorbing member. (6) The tampon absorber according to any one of the above.

  About the invention of (7), in the absorption member of the absorber for tampons concerning this invention, the both ends of the contact part are not sewn. In the process of manufacturing a sanitary tampon from the tampon absorbent body, the sanitary tampon is generally formed by compressing the absorbent member of the tampon absorbent body into a long shape with a cylindrical compression mold, and further pressing bars from the front and back. Compressed and molded by compression. Since the press rod comes into contact with the base (rear end portion) of the absorbent member during the front-rear compression, a load due to abrasion is applied to the cord member extending from the cord member and the thread member for sewing the cord member, and the base of the absorbent member ( The strength of the rear end portion may be weakened. In this regard, according to the present invention, since there is no stitched portion at both ends of the absorbent member (there is a stitched portion inside the end portion), the thread member that constitutes the stitched portion during compression molding of the tampon absorbent body And the compression molding apparatus are not in contact with each other, and an unnecessary load is not applied to the cord member and the thread member for sewing the cord member, so that the strength of the base (rear end portion) of the absorbing member is reduced along with the compression molding. This can be prevented.

  (8) An applicator-type sanitary tampon in which a sanitary tampon obtained by compression-molding the tampon absorber according to any one of (1) to (7) into a substantially cylindrical shape is housed in an applicator for insertion into the vagina.

  According to the invention of (8), since the applicator can be used when the sanitary tampon is inserted into the vagina, even a beginner can easily insert the sanitary tampon into the vagina, which is generally easy to use. Can be provided.

  According to the present invention, it is possible to prevent the entire cord member from being contaminated by menstrual blood by providing a non-sewn portion at least partially in the extended portion of the cord member. In addition, since the entire extension portion is not sewn with the thread member, it does not take much time to sew the cord member, increase the productivity of the sanitary tampon, or increase the speed when sewing the cord member. It is also possible to increase the accuracy of sewing and further reduce the amount of thread member used.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.

<First embodiment>
First, a first embodiment suitable for implementing the present invention will be described with reference to the drawings.

[Basic structure of absorber for tampon]
FIG. 1 is a schematic view of a tampon absorber 1 according to the present embodiment. FIG. 6 shows a sanitary tampon 5 manufactured from the tampon absorbent body 1. The absorbent body 1 for tampon according to the present embodiment has a planar arrow-shaped absorbent member 10, part of which is in contact with the longitudinal center line of one surface of the absorbent member 10, and part of the absorbent member 10 arrow. And a cord member 20 extending long from the wing-like convex portion. As shown in FIG. 6, the tampon absorbent body 1 is manufactured as a sanitary tampon 5 by compression-molding the absorbent member 10 into a substantially cylindrical absorbent body 10b. It is commercially available in a state of being stored in (not shown).

[Absorbing member]
In FIG. 2, the cross section when the absorber 1 for tampons concerning this embodiment is cut | disconnected by the XX line shown in FIG. 1, and the structure of its periphery are shown. As shown in FIG. 2, the absorbent member 10 includes an absorbent layer 14 having an absorbent fiber material and a liquid-permeable surface material 12 that covers the absorbent layer 14 so as to circulate in the lateral direction.

  The dimensions of the absorbent member 10 are 30 mm to 90 mm in the total length in the longitudinal direction and 30 mm to 70 mm in the total length in the short direction. The length of the absorbent body 10b after the absorbent member 10 is compression-molded into a substantially cylindrical shape is preferably 20 mm to 60 mm in total length and 8 mm to 20 mm in diameter. When the total length of the absorbent body 10b is less than 20 mm, sufficient absorbency is not exhibited. On the other hand, when the total length is 60 mm or more, even when the vagina can be inserted to the back of the vagina, a tampon will be present up to the site where it feels strange, This may cause discomfort during use.

  In the present embodiment, the absorbing member 10 has an arrow feather shape, but is not limited thereto. That is, the absorbent member 10 may have any shape as long as it is vertically long, and examples thereof include a rectangle and an ellipse. Further, the absorbent member 10 may be in the form of a sheet, and the absorbent member 10 may be in the form of a sheet in the end. But you can.

(Absorption layer)
Examples of the absorbent fiber material used for the absorbent layer 14 include hydrophilic fibers such as cotton, rayon, and synthetic fibers. Absorbing layer 14 preferably having a basis weight ^{150g / m 2 ~1500g / m 2} , thickness 0.1mm~0.9mm about fiber web, overlapping one or a plurality of non-woven or woven fabric, results, preferably a thickness 1. The thickness is 0 mm to 15.0 mm, more preferably 2.0 mm to 10 mm. As a fiber web and a nonwoven fabric, there exist some which were shape | molded by the card web, the airlaid method, the wet raid method etc. based on the thing like a synthetic fiber sheet. In addition, the absorbent layer 14 may be mixed with hydrophobic fibers and hydrophobic fibers subjected to hydrophilic treatment together with hydrophilic fibers. Further, the absorbing layer 14 may be mixed with a compound having a water absorbing function such as a highly water-absorbing polymer.

(Surface material)
Examples of the liquid-permeable surface material 12 include a nonwoven fabric formed from hydrophobic fibers and an apertured film subjected to an aperture treatment. Although it does not specifically limit as a kind of nonwoven fabric used for the surface material 12, For example, a spun bond nonwoven fabric, a spun lace nonwoven fabric, a thermal bond nonwoven fabric etc. are used, Although it does not specifically limit as a hydrophobic fiber, For example, polyester, polypropylene, polyethylene Each fiber is used. Basis weight of the nonwoven fabric is preferably from ^{8g / m 2 ~40g / m 2} . Moreover, as an apertured film, polyolefin films, such as a polypropylene and polyethylene, are preferable.

[Cord member]
The cord member 20 abuts on a substantially center line in the longitudinal direction of one surface of the absorbent member 10, and a contact portion L <b> 1 that abuts the absorbent member 10. An extending portion L2 extending from the convex portion, and a sewing portion 24 formed when the absorbing member 10 and the cord member 20 are sewn by the thread member 30 in at least a part of the abutting portion L1. . The cord member 20 is made of a cotton yarn or a composite yarn obtained by twisting together single yarns such as a plurality of cotton yarns and polyester yarns (not shown). In order to prevent the cord member 20 from being contaminated by urine or the like during use, the cord member 20 is preferably subjected to water repellent processing by paraffin adhesion processing or the like. The sanitary tampon 5 is a general standard, and the length of the extended portion L2 of the cord member 20 is required to be a minimum length of 80 mm or more, but the maximum length is preferably up to about 160 mm. . Here, when the length of the absorbing member is 30 mm to 90 mm, the entire length of the cord member is preferably in the range of 110 mm to 250 mm.

(Contact part)
The total length of the contact portion L1 is preferably 30 mm to 90 mm. At least a part of the contact portion L1 has a sewing portion 24 for sewing the absorbing member 10 and the contact portion L1 with the thread member 30. In the present embodiment, the contact portion L1 and the absorbing member 10 are in contact with each other on the substantially center line in the longitudinal direction of the absorbing member 10, but the invention is not particularly limited thereto. That is, the abutting portion L1 and the absorbing member 10 can be appropriately abutted in a form without any trouble when the sanitary tampon 5 after use is pulled out of the vagina.

(Extension part)
The total length of the extending portion L2 is preferably 80 mm to 160 mm, and more preferably 120 mm to 140 mm. The extending portion L2 has a non-sewn portion 22 that is not sewn by the thread member 30 at least in part.

(Sewing part)
The sewn portion 24 includes a sewn portion 242 that is formed when the absorbing member 10 and the abutting portion L1 are sewn by the thread member 30, and the absorbing member 10 and the abutting portion L1 are sewn. The sewing part 24 may be a part of the contact part L1 or may extend over the entire contact part L1. In addition, a part of the sewing portion 24 may extend to a region adjacent to the contact portion L1. In this case, the sewn portion 24 further includes non-sewn portions 241 and 243. In the present embodiment, the ratio of the total length of the sewing portion is 20% to 90% with respect to the total length of the cord member 20. The thread member 30 for sewing the sewing portion 24 is not particularly limited, and for example, a plurality of single yarns such as cotton threads are used together and subjected to water repellent processing such as paraffin adhesion processing as necessary. .

[Action and effect of absorber for tampon]
In the tampon absorbent body 1 of the present embodiment, the absorbent member 10 is compression-molded into a substantially cylindrical shape, and then molded into the sanitary tampon 5. In use, the sanitary tampon 5 is inserted into the vagina using an applicator or with fingers. In the inserted sanitary tampon 5, the absorbent body 10b stays in the vagina, and the extending portion L2 extends out of the vagina. In the vagina, menstrual blood permeates the surface material 12 and penetrates into the absorption layer 14, and the permeated menstrual blood is absorbed and held by the hydrophilic fibers constituting the absorption layer 14. Since the absorption layer 14 that has absorbed menstrual blood is expanded by being compressed, the absorbent body 10b closes the vaginal cavity. Since the absorbent body 10b closes the vaginal cavity, menstrual blood discharged continuously can be absorbed.

  When a large amount of menstrual blood is discharged, menstrual blood reaches the core of the absorber 10b. Menstrual blood that can no longer be held by the absorber 10b reaches the contact portion L1 of the cord member 20 from the absorber 10b. In the sewing portion 24 of the contact portion L1, since the single yarn of the cord member 20 is in close contact with the compression force of the yarn member 30, a capillary force is generated due to the density gradient, and an absorption force that absorbs menstrual blood is generated. . For this reason, the sewing part 24 is contaminated by menstrual blood. However, unlike the conventional example 1, the menstrual blood is not transmitted to the non-sewn portion 22 where no capillary force is generated. For this reason, the entire cord member 20 is not contaminated by menstrual blood, and when the user pulls out the sanitary tampon 5, the finger can be pulled out without getting dirty.

  Furthermore, since the entire cord member 20 is not sewed by the thread member 30, the time spent for sewing can be shortened to improve productivity, or the time spent for sewing does not become longer than before. By reducing the sewing speed, it becomes possible to stably produce the tampon absorbent body 1 with less stitching. Furthermore, it is possible to provide the sanitary tampon 5 with a low production cost by suppressing the amount of the thread member 30 used.

<Second Embodiment>
Next, a second preferred embodiment for implementing the present invention will be described with reference to the drawings.

  In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof may be simplified.

[Cord member]
FIG. 3 is a schematic view of the tampon absorbent body 1 according to the present embodiment. The cord member 20 constituting the tampon absorber 1 has a first sewing portion 24a in at least a part of the abutting portion L1, and a second sewing portion 24b in at least a portion of the extension portion L2. Have. A part of the first sewing portion 24a may extend to a region adjacent to the contact portion L1. In this case, the first sewn portion 24 a includes non-sewn portions 241 and 243 in addition to the sewn portion 242. The first sewing portion 24a and the second sewing portion 24b are separated from each other with the non-sewn portion 22 interposed therebetween. Further, the cord member 20 has a free end 26 that is an end portion in the drawing direction of the sanitary tampon, and the second sewing portion 24b is formed in a region including the free end 26. The ratio of the total length of the sewing portion, which is the sum of the total length of the first sewing portion 24 a and the total length of the second sewing portion 24 b, is 20% to 90% with respect to the total length of the cord member 20.

[Action and effect of absorber for tampon]
In the tampon absorbent body 1 of the present embodiment, the absorbent member 10 is compression-molded into a substantially cylindrical shape and is commercially available as a sanitary tampon. Since the sanitary tampon has the second sewing portion 24 b, the single yarns constituting the cord member 20 are fixed to each other at the free end 26 of the cord member 20, and the cord member 20 is not easily unwound at the free end 26. . For this reason, it becomes easy to pull the cord member 20 when the user pulls out the sanitary tampon after using the sanitary tampon.

<Example 1>
(Configuration of absorber for tampon)
As shown in FIG. 1, in this embodiment, in addition to 60 mm of the contact portion L1, 27.5 mm of the portion adjacent to the contact portion L1 in the extended portion L2, and the contact portion from the cord member 20 The remaining 10 mm excluding L1 and the extended portion L2 was sewn by the thread member 30. That is, the total length of the sewn portion was 97.5 mm. The total length of the cord member 20 was 195 mm. Therefore, the ratio of the total length of the sewing portion was 50% (97.5 / 195). As the thread member 30, a cotton thread obtained by twisting three 40 thread counts of cotton thread was used.

In the absorbent member 10 of the tampon absorbent body 1 according to the present embodiment, a fiber assembly sheet having a rayon of 100% and a basis weight of 880 g / m ² is used as the absorbent layer 14, and the surface material 12 is 100% of polyethylene terephthalate and a basis weight of 12 g / A spunbond nonwoven fabric of m ² was used. The absorbent member 10 has a planar arrow-shaped shape, and has a longitudinal dimension (a dimension from the arrow-shaped convex part to the arrow-shaped concave part) of 60 mm and a lateral dimension of 40 mm. This tampon absorbent body 1 was compression-molded into a substantially cylindrical shape and formed into a sanitary tampon 5.

  The cord member 20 used was a composite yarn obtained by twisting 8 cotton yarns and 6 polyester yarns and 6 water-repellently processed by paraffin adhesion. Of the total length of 195 mm of the cord member 20, the size of the contact portion L1 was 60 mm, and the size of the extended portion L2 was 125 mm.

(Method for producing absorber for tampon)
FIG. 8 shows a schematic diagram of a method for manufacturing the tampon absorbent body 1 according to the present embodiment. Below, the manufacturing method of the absorber 1 for tampons concerning a present Example is demonstrated.

  First, in manufacturing the tampon absorbent body 1 according to the present embodiment, the cord member 20 was fed out in the predetermined direction S. The length of the cord member 20 fed out can be adjusted by adjusting the speed at which the cord member 20 is fed out from the cord member feeding means. A plurality of substantially U-shaped slack portions 28 a are formed in a direction T substantially perpendicular to the direction S with respect to the cord member 20 that has been fed out. The interval between the slack portions 28a was 97.5 mm. As means for forming the slack portion 28a, for example, there are a fixed guide 72 arranged in a substantially straight line and a movable guide 74 arranged in a position not overlapping with the two fixed guides 72 adjacent to each other and movable in the direction T. There is a means for sandwiching the cord member and causing the slack portion 28a to protrude in the direction T as the movable guide 74 moves.

  After the slack portion 28a is formed, the planar arrow-shaped absorbent member 10 is disposed on the straight portion 28b located between the slack portions 28a adjacent to each other. At this time, the linear portion 28b was brought into contact with the substantially center line in the longitudinal direction of the absorbing member 10, and the distance from the arrow-shaped convex portion to the nearest fixed guide 72 was 27.5 mm. The respective straight portions 28b are arranged in a substantially straight line along the direction S. By stitching the straight portions 28b and the absorbing member 10 in contact with the straight portions 28b continuously with the thread member 30 along the straight line, the sewing portions 24 are formed in the contact portions L1 in contact with the absorbing members 10. did. Since the absorbent member 10 and the cord member 20 are sewn by one thread member 30, a thread coupling portion 32 that is a part of the thread member 30 is formed between the absorbent members 10 adjacent to each other. By cutting the thread connecting portion 32 with a cutter 76 or the like, the thread member 30 for sewing the two absorbent members 10 adjacent to each other was separated.

  After cutting the yarn connecting portion 32, the cord member 20 was extended in a substantially straight line toward the direction S by adjusting the interval between the absorbent members 10. Next, the tampon absorbent body 1 was manufactured by cutting the cord connecting portion 28 c formed between the absorbent members 10 adjacent to each other at a position 10 mm from the arrow-shaped recess.

  In addition, when manufacturing the tampon absorbent body 1 in this embodiment, the cord connecting portion 32c is cut after the yarn connecting portion 32 is cut, but the present invention is not limited to this. That is, the tampon absorbent body 1 may be manufactured by simultaneously cutting the yarn connecting portion 32 and the cord connecting portion 28c with one cutter.

  The tampon absorbent body 1 manufactured by the above manufacturing method can manufacture the sanitary tampon 5 by compression-molding the absorbent member 10 into a substantially cylindrical shape.

(effect)
In the sanitary tampon 5 according to the present embodiment, only the contact portion L1 and the region adjacent to the contact portion L1 are sewn by the thread member 30, so even when a large amount of menstrual blood is discharged, menstrual blood Thus, the sanitary tampon 5 after use can be pulled out without soiling the fingers. Furthermore, in the manufacturing process, the time spent for the sewing process of the tampon absorbent body 1 can be reduced, and the amount of the thread member 30 used can be reduced.

<Example 2>
(Configuration of absorber for tampon)
As shown in FIG. 4, in the present example, 50 mm excluding 5 mm at each end of the contact portion L <b> 1 was sewn by the thread member 30. That is, the total length of the sewn portion was 50 mm. The total length of the cord member 20 was 195 mm. Therefore, the ratio of the total length of the sewing portion was 26% (50/195).

  The absorbent member 10, the cord member 20, and the thread member 30 of the tampon absorbent body 1 according to the present embodiment are the same as those in the first embodiment. The dimensions of the contact portion L1 and the extension portion L2 of the cord member 20 are the same as those in the first embodiment.

(Method for producing absorber for tampon)
Regarding the manufacturing method of the tampon absorber according to the present embodiment, the interval between the slack portions 28a is set to 50 mm, and when the absorbing member 10 is disposed on the straight portion 28b, Except that the fixed guide 72 is arranged so that the fixed guide 72 is located at a position of 5 mm from each of the wing-shaped concave portion and the convex portion, it is the same as the manufacturing method of the tampon absorber 1 according to the first embodiment. .

(effect)
In the sanitary tampon 5 according to the present embodiment, since only a part of the region included in the contact portion L1 is sewn by the thread member 30, menstrual blood is transmitted even when a large amount of menstrual blood is discharged. The sanitary tampon 5 after use can be pulled out without contaminating the fingers without leaking. Furthermore, in the manufacturing process, the time spent for the sewing process of the tampon absorbent body 1 can be reduced, and the amount of the thread member 30 used can be further reduced.

  Furthermore, in the absorbent member 10 of the tampon absorbent body 1 according to the present embodiment, both ends of the contact portion L1 are not sewn. In the process of manufacturing the sanitary tampon 5 from the tampon absorbent body 1, the sanitary tampon 5 generally compresses the absorbent member 10 of the tampon absorbent body 1 into a long shape with a cylindrical compression mold, Furthermore, it is compression-molded by compressing from the front and back with a press rod. Since the press rod comes into contact with the base (rear end portion) of the absorbent member during the front-rear compression, the cord member 20 extending from the press member and the thread member 30 that sews the cord member 20 are subjected to a load due to abrasion, and the absorbent member There is a risk that the strength of the base (rear end portion) of the steel becomes weak. In this regard, according to the present embodiment, there is no stitched portion at both ends of the absorbent member 10 (there is a stitched portion inside the end portion), so the stitched portion 24 is not compressed when the tampon absorber 1 is compression-molded. Since the constituting thread member 30 and the compression molding device do not come into contact with each other and unnecessary load is not applied to the cord member 20 and the thread member 30 that sews the cord member 20, the root of the absorbing member (rear end) accompanies compression molding. Part) can be prevented from weakening.

<Example 3>
(Configuration of absorber for tampon)
As shown in FIG. 3, in the present embodiment, in addition to 60 mm of the contact portion L1, 7.5 mm of the portion adjacent to the contact portion L1 in the extended portion L2, and the contact portion from the cord member 20 The remaining 10 mm excluding L1 and the extended portion L2 was sewn with the thread member 30 (first sewing portion 24a). Further, in the extended portion L2, an area 20 mm including the free end 26 was sewn with the thread member 30 (second sewing portion 24b). A non-sewn part 22 that is not sewn by the thread member 30 is provided between the first sewn part 24a and the second sewn part 24b. The total length of the stitched portion including the first stitched portion 24a and the second stitched portion 24b was 97.5 mm. The total length of the cord member 20 was 195 mm. Therefore, the ratio of the total length of the sewing portion was 50% (97.5 / 195).

  The absorbent member 10, the cord member 20, and the thread member 30 of the tampon absorbent body 1 according to the present embodiment are the same as those in the first embodiment. The dimensions of the contact portion L1 and the extension portion L2 of the cord member 20 are the same as those in the first embodiment.

(Method for producing absorber for tampon)
Regarding the method for manufacturing the tampon absorber according to the present embodiment, when the absorbent member 10 is disposed on the straight portion 28b, the distance from the arrow-shaped convex portion to the nearest fixed guide 72 is 7.5 mm. The method is the same as the method for manufacturing the tampon absorbent body 1 according to the first embodiment except that the tampon absorber 1 is disposed.

(effect)
In the sanitary tampon according to the present embodiment, the first sewn portion 24a and the second sewn portion 24b are separated from each other across the non-sewn portion 22, so that even when a large amount of menstrual blood is discharged, Menstrual blood does not pass through the non-sewn portion 22 and does not leak, and the used sanitary tampon can be pulled out without contaminating the fingers. Further, since the region including the free end 26 of the extended portion L2 is sewn by the thread member 30, the cord member 20 can be prevented from being unraveled in the vicinity of the free end 26 when the sanitary tampon after use is pulled out. It has become. Furthermore, in the manufacturing process, the time spent for the sewing process of the tampon absorbent body 1 can be reduced, and the amount of the thread member 30 used can be reduced.

<Example 4>
(Configuration of absorber for tampon)
As shown in FIG. 3, in this embodiment, in addition to 65 mm of the contact portion L1, 5 mm of the portion adjacent to the contact portion L1 in the extended portion L2, and the contact portion L1 from the cord member 20 The remaining 10 mm excluding the extended portion L2 was sewn with the thread member 30 (first sewing portion 24a). Further, in the extended portion L2, an area 20 mm including the free end 26 was sewn with the thread member 30 (second sewing portion 24b). A non-sewn part 22 that is not sewn by the thread member 30 is provided between the first sewn part 24a and the second sewn part 24b. The total length of the stitched portion including the first stitched portion 24a and the second stitched portion 24b was 100 mm. The total length of the cord member 20 was 205 mm, and therefore the ratio of the total length of the sewn portion was 49% (100/205).

  The absorbent member 10 of the tampon absorbent body 1 according to the present embodiment is the same as that of the first embodiment except that the longitudinal dimension (the dimension from the arrow feather-shaped protrusion to the arrow feather-shaped recess) is 65 mm. The same as that used in the above.

  The cord member 20 is made of the same material as that used in the first embodiment. Of the total length 205 mm of the cord member 20, the size of the contact portion L1 is 65 mm and the size of the extension portion L2 is 125 mm. . The same thread member 30 as in Example 1 was used.

(Method for producing absorber for tampon)
About the manufacturing method of the absorber for tampon which concerns on a present Example, when the space | interval of each slack part 28a was 100 mm, and when arrange | positioning the absorption member 10 to the linear part 28b, from a feather-like convex part, The method is the same as the method for manufacturing the tampon absorbent body 1 according to the first embodiment except that the distance to the nearest fixed guide 72 is 5 mm.

<Example 5>
(Configuration of absorber for tampon)
As shown in FIG. 5, in this embodiment, 55 mm excluding 5 mm each on both ends of the abutting portion L <b> 1 is used by using the cut-in absorption member 10 a that is cut into 5 mm from the arrow-shaped convex portion and the concave portion. The thread member 30 was sewn. That is, the total length of the sewn portion was 55 mm. The total length of the cord member 20 was 205 mm. Therefore, the ratio of the total length of the sewn portion was 27% (55/205).

  The absorbent member 10 of the tampon absorbent body 1 according to the present embodiment is the same as that of the first embodiment except that the longitudinal dimension (the dimension from the arrow feather-shaped protrusion to the arrow feather-shaped recess) is 65 mm. The same as that used in the above.

  The cord member 20 is made of the same material as that used in Example 1. Of the total length 205 mm of the cord member 20, the size of the contact portion L1 is 65 mm and the size of the extension portion L2 is 130 mm. The same thread member 30 as in Example 1 was used.

  In the sanitary tampon 5 according to the present embodiment, the extended portion L2 is not sewn by the thread member 30, but the extended portion L2 is obtained by sewing the region 20mm including the free end 26 by the thread member 30. May be. In this case, the total length of the sewing portion is 75 mm, and the ratio of the total length of the sewing portion is 37% (75/205).

(Method for producing absorber for tampon)
FIG. 9 is a schematic view of a method for manufacturing the tampon absorbent body 1 according to the present embodiment. Below, the manufacturing method of the absorber 1 for tampons concerning a present Example is demonstrated.

  First, in the manufacture of the tampon absorbent body 1 according to the present embodiment, the substantially strip-shaped member 16 including the absorbent layer and the surface material that circulates the absorbent layer in the short direction is extended substantially linearly, and the insertion portion Insertion portions 18 are provided at regular intervals on the substantially center line in the longitudinal direction of the substantially strip-shaped member 16 by the forming means 94.

  Next, the cord member 20 was fed out, and the slack portions 28a were formed at regular intervals on the cord member 20 by a slack portion forming means for forming a slender portion 28a having a substantially U shape on the cord member. As the slack portion forming means, for example, the cord member 20 which has a plurality of cylindrical members 92 having openings at regular intervals and makes the inside of the cylindrical member 92 negative pressure to contact the opening of the cylindrical member 92. A means for sucking a predetermined length to form the slack portion 28a.

  The cord member 20 was brought into contact with the substantially center line in the longitudinal direction of one surface of the substantially strip-shaped member 16. At this time, the slack portions 28a are arranged at the portions where the respective insertion portions 18 are formed. The slack portion 28a was inserted into the other surface side of the substantially strip-shaped member 16 through the insertion portion 18 by insertion means. As the insertion means, for example, in conjunction with the slack portion forming means, the opening of the cylindrical member 92 that sucked the cord member when forming the slack portion 28a is assigned to the insertion portion 18, and the inside of the cylindrical member 92 is Examples of the positive pressure include means for ejecting the slack portion 28 a and inserting the slack portion 28 a through the insertion portion 18.

  The substantially strip-shaped member 16 and the cord member 20 that is in contact with the substantially strip-shaped member 16 were continuously sewn by the thread member 30 along the substantially center line in the longitudinal direction of the substantially strip-shaped member 16. Thereby, the sewing part 24 was formed in the contact part L1 in which the substantially strip-shaped member 16 and the cord member 20 contact. Since the substantially band-shaped member 16 and the cord member 20 are sewn by the single thread member 30, the thread connecting part 32, which is a part of the thread member 30, is formed at the part where the insertion part 18 is formed. By cutting the thread connecting portion 32 with a cutter 76 or the like, the thread members 30 could be separated from each other in the insertion portion 18. Note that when cutting the yarn connecting portion 32, a part of the substantially band-shaped member 16 was also cut.

  After cutting the thread connecting portion 32, the substantially strip-shaped member 16 was cut into an arrow shape on the cutting surface including the insertion portion 18 to form the absorbing member 10. The cord member 20 was extended substantially linearly toward a predetermined direction by adjusting the interval between the absorbing members 10. Next, the tampon absorbent body 1 was manufactured by cutting the cord connecting portion 28c formed between the absorbent members 10 adjacent to each other at a position of 10 mm from the arrow-shaped recess.

  In addition, when manufacturing the tampon absorbent body 1 in the present embodiment, the substantially belt-like member 16 and then the cord connecting portion 28c are cut after the yarn connecting portion 32 is cut, but the present invention is not limited thereto. . That is, the tampon absorbent body 1 may be manufactured by simultaneously cutting the yarn connecting portion 32, the substantially band-shaped member 16 and the cord connecting portion 28c with one cutter.

  The tampon absorbent body 1 manufactured by the above manufacturing method can manufacture the sanitary tampon 5 by compression-molding the absorbent member 10 into a substantially cylindrical shape.

<Example 6>
Tables 1 to 3 show dimensions of the tampon absorbent body 1 that can be used in the present invention. In each table, the manufacturing method shown in Example 1 is the manufacturing method 1, and the manufacturing method shown in Example 5 is the manufacturing method 2. The dimensions of the tampon absorbent body 1 manufactured by each manufacturing method are shown in FIG. showed that.

  A1 to A7 in Table 1 correspond to A1 to A7 in FIG. A1 indicates the longitudinal dimension of the absorbent member 10 or the slit-shaped absorbent member 10a (the dimension from the arrow-shaped concave portion to the arrow-shaped convex portion), A2 indicates the total length of the cord member 20, and A3 indicates the sewing portion. 24 shows the total length of the length of the first sewn portion 24a sewn by the thread member 30 in the absorbent member 10. A4 shows the full length of the length sewn by the thread member 30 in the remaining part of the sewing part 24 or the first sewing part 24a excluding the contact part L1 and the extension part L2 from the cord member 20, and A5 A6 indicates the total length of the extended portion L2, and A6 indicates the total length of the length sewn by the thread member 30 in the portion adjacent to the contact portion L1 of the extended portion L2 in the sewing portion 24 or the first sewing portion 24a. A7 indicates the total length of the second sewing portion 24b. Further, R indicates the ratio of the total length of the sewing portion to the total length of the cord member 20.

  When the tampon absorbent bodies 1 shown in Table 1 are classified according to their features, they are classified into four types a to c. In type a, the entire length of the absorbing member 10 or the cut-in absorbing member 10a is long, so that the sanitary tampon 5 molded from the type a tampon absorbent body 1 has high absorbency and a large amount of menstrual blood is discharged. Suitable for use in. In type b, since the overall length of the absorbing member 10 or the slit-shaped absorbing member 10a is medium, the sanitary tampon 5 molded from the tampon absorbent body 1 of type b has a moderate absorption power and is free of menstrual blood. Suitable for use when the amount of discharge is medium. In the type c, the entire length of the absorbing member 10 or the cut-in absorbing member 10a is short, and the sanitary tampon 5 molded from the type c tampon absorbent body 1 is easy to insert into the vagina. Therefore, it is suitable for use by a user who is not familiar with the use of the sanitary tampon 5.

  “Manufacturing method 1 (with second sewing portion)” indicates the dimensions of the tampon absorbent body 1 having the second sewing portion 24b among the tampon absorbent bodies 1 manufactured by the manufacturing method 1. “Manufacturing method 1 (maximum sewing)” shows the dimensions of the tampon absorbent body 1 when R takes the maximum allowable value in the tampon absorbent body 1 according to the present invention.

  Table 2 shows the dimensions that the tampon absorber 1 can take when R is 50%. The meanings of A1 to A7, a to c, and “Manufacturing method 1 (with second sewing portion)” used in Table 2 are the same as those described in Table 1.

  Table 3 shows the dimensions of the absorbent body for the tampon when the dimension in the longitudinal direction of the absorbent member 10 or the slit-shaped absorbent member 10a (the dimension from the arrowhead-shaped concave portion to the arrowhead-shaped convex portion) takes the maximum value. . Here, in the tampon absorbent body 1 of type e to type f, the total length of the cord member 20 is different, the total length of the cord member 20 of type e is the longest, and the total length of the cord member 20 of type f is the shortest. The meanings of A1 to A7, “Manufacturing method 1 (with second sewing portion)”, and “Manufacturing method 1 (maximum sewing)” used in Table 3 are the same as those described in Table 1. .

<Example 7>
(Absorption test)
As shown in FIG. 11, three cord members 20 a each having no sewing portion provided by the thread member 30 and three cord members 20 b each including the entire sewing portion prepared by the thread member 30 were prepared. Enlarged views of the cord members 20a and 20b are shown in a portion surrounded by a dotted line in FIG. As the cord member 20, a composite yarn in which 8 cotton yarns and 10 polyester yarns are combined together and water-repellent processed with paraffin is used. As the yarn member 30, the cotton yarn is 40 yarns. A cotton thread made by twisting three yarns and water-repellent processed with paraffin was used. One end of each cord member was fixed to the rod 100 and the other end was tied to the weight 102. Next, the weight 102 was placed on the pad 104, each cord member was stretched vertically, the Syngina solution was poured into the pad 104 and left at 20 ° C. for 3 hours, and the degree to which each cord member sucked up the Syngina solution was examined. . In the cord member 20a provided with no sewing portion, the Syngina solution was not sucked up. On the other hand, in the cord member 20b provided with the entire sewing portion, the Syngina liquid was sucked up by an average of 4 mm from the liquid surface.

  The Syngina solution is an aqueous solution used in place of menstrual blood by those skilled in the art in the absorbability test of sanitary tampon. Specifically, it is an aqueous solution in which 0.5 g of a colorant is dissolved in a sodium chloride solution in which 10 g of sodium chloride is dissolved in 1 liter of distilled water or deionized water. Examples of the colorant include acid fuchsin, Fisher F97 certified biological colorant, color index N ° 42685: Fisher Scientific or Fructerot dye, E144 or Ponceau Cochenillerot 124 or Edible Red No. 40.

  From the above results, it was found that the cord member 20a having no sewing portion has a weak absorbency of the Syngina liquid compared to the cord member 20b having the entire sewing portion.

It is drawing which shows the absorber for tampons which concerns on this invention. It is drawing which shows sectional drawing of the absorber for tampons which concerns on this invention. It is drawing which shows the absorber for tampons which concerns on this invention. It is drawing which shows the absorber for tampons which concerns on this invention. It is drawing which shows the absorber for tampons which concerns on this invention. 1 is a view showing a sanitary tampon according to the present invention. It is drawing which shows the absorber for tampons which concerns on a prior art example. It is drawing which shows the manufacturing method of the absorber for tampons which concerns on this invention. It is drawing which shows the manufacturing method of the absorber for tampons which concerns on this invention. It is drawing which shows the absorber for tampons which concerns on this invention. It is drawing which showed the outline | summary of the absorptivity test concerning a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent body for tampon 5 Sanitary tampon 10 Absorbing member 10a Absorptive absorbing member 10b Absorbent body 12 Surface material 14 Absorbing layer 16 Band-shaped member 18 Inserting portion 20 Cord member 20a Cord member 20b with no sewn portion Code member 22 provided throughout 22 Non-sewn portion 24 Sewn portion 24a First stitched portion 24b Second stitched portion 26 Free end 28a Slack portion 28b Linear portion 28c Cord connecting portion 30 Thread member 32 Thread connecting portion 72 Fixed guide 74 Movement Guide 76 Cutter 92 Cylindrical member 94 Insertion part forming means 100 Bar 102 Weight 104 Bad 241 Non-sewn part 242 Sewn part 243 Non-sewn part L1 Abutting part L2 Extending part

Claims (5)

A tampon absorber having a liquid-absorbing absorbent member and a drawing cord member joined to the absorbent member,
The cord member forms a pull-out region without contacting the absorbing member, and an abutting portion provided with a sewing portion that is in contact with the absorbing member and is sewn to the absorbing member with a thread member at least partially. An extended portion, and
The extending portion includes a non-sewn portion that is not sewn with the thread member, and other sewing portions that are spaced apart from each other with the non-sewn portion sandwiched from the sewn portion in the contact portion,
The other sewed portion is an absorbent body for a tampon that is formed in the vicinity of a free end of the extended portion . The ratio of the total length of the sewn area is 90% to 20%, according to claim 1 tampon absorbent body according. 3. The tampon absorber according to claim 1, wherein the absorbing member is in a plane arrow-shaped shape, and the cord member is attached so that an extending portion extends from an arrow-shaped convex portion. . The absorbent member is of a vertically long shape having a longitudinal direction and a short direction, and the contact portion of the cord member is disposed along the longitudinal direction,
The stitched portion sewn to the absorbing member in at least a part of the abutting portion is provided in a portion of the abutting portion excluding a portion that abuts both ends in the longitudinal direction of the absorbing member. The absorber for tampons according to any one of claims 1 to 3 . An applicator type sanitary tampon in which a sanitary tampon formed by pressing the tampon absorbent body according to any one of claims 1 to 4 into a substantially cylindrical shape is housed in an applicator for insertion into the vagina.

Images