JP2003210524A - Absorbing article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbing article in which the hook member of a fastener capable of exhibiting a sufficient joining force to maintain a holding state against a cloth base is arranged, when mounted on the cloth base with a small loop-like fiber such as a cotton or the like. <P>SOLUTION: On an absorbent 5 having a water permeable surface sheet 2, a water impermeable back sheet 3, an absorptive core 4 intervening between these both sheets, the hook member 6 of the fastener in which a plurality of hook elements 8 having an elliptical cap 10 with a diameter of 275-375 μm are lined up, is arranged and constituted on the back sheet 3 of the absorbent 5. By this, the absorbing article can be mounted with the sufficient joining force against the cloth base with the small loop-like fiber such as the cotton or the like. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article provided with a hook member for a fastener, which is mainly used by being attached to a cloth material such as cotton.

[0002]

2. Description of the Related Art Conventionally, absorbent articles such as urine absorbing pads and sanitary napkins have been used by being worn on clothing such as paper diapers and underwear, and adhesive tape or the like is generally used as a slip stopper. . Some urine collection pads are actually fitted with mechanical fasteners for wearing on a disposable diaper. When this item is worn, it is attached by engaging the non-woven fabric as the surface sheet on the inner side of the paper diaper with this mechanical fastener. Here, the mechanical fastener is a fastener having a hook element, which is used to fasten the absorptive article by hooking the hook element on the loop-shaped fiber existing in the object to be attached, Since many loop-shaped fibers are present in the non-woven fabric as the inner surface sheet, it can be easily attached by this mechanical fastener.

Here, when an absorbent article is fixed to a paper diaper, the non-woven fabric as a surface sheet on the inside of the paper diaper is porous because it has liquid permeability, and there is a gap between the bonding points of the fibers. Since there are a sufficient number of loop fibers that are large enough to fit together and the loop density is dense, even at the distance between the caps, the loop fibers have a high probability of entering between the caps of the hook elements, A sufficient engaging force can be exerted by engaging with the cap.

[0004]

By the way, the urine absorbing pad is not limited to a paper diaper, but an active mild incontinence person who does not wear a paper diaper can directly wear the absorbent article on clothes such as pants of cotton cloth. Wearing and wearing is actually done.

However, the hook element (so-called male member) of this mechanical fastener is originally intended to be fixed to a female member having loop-shaped fibers, and is a non-woven fabric as a surface sheet on the inside of a paper diaper. Porous (bulky) non-woven fabric can be used as a loop (female member), but in the case of clothing made of 100% cotton,
Compared to non-woven fabric as the inner surface sheet of a disposable diaper, the number of loop-shaped fibers is smaller, and the loop is also smaller.
Since the loop density is also sparse, the probability that the loop-shaped fiber will enter between the caps of the hook element is extremely low. For this reason, a sufficiently strong engagement force cannot be exerted on the cloth material, which causes inconvenience such as slipping or falling off during wearing.

The present invention has been made in view of the above problems, and an object thereof is an absorbent article provided with a mounting member capable of exhibiting a sufficient engaging force even for a cloth material such as 100% cotton. To provide.

[0007]

In order to solve the above problems, in the present invention, by properly adjusting the cap diameter of the hook element of the mechanical fastener, the distance between the caps, and the size of the cap protrusion, the urine In absorbent articles such as take-up pads and sanitary napkins, the number of loop-shaped fibers is small, and sufficient engagement force should be exerted against clothes such as cotton cloth having sparse loop density. Is characterized by.

More specifically, it has been found that the loop-shaped fiber is properly engaged with the hook element by reducing the cap diameter of the hook element of the mechanical fastener and increasing the inter-cap distance. The present invention has been completed.

[0009] Furthermore, the present invention relates to the absorbent article of the present invention, and is provided in the place where there is no idea of attaching a mechanical fastener to a material such as cloth material having a small number of loop fibers. In order to increase the probability of engaging the hook element with small and small loop-shaped fibers, the cap diameter is not increased, but the cap distance is reduced and the inter-cap distance is increased.

More specifically, the present invention provides the following.

(1) Water-permeable top sheet, water-impermeable back sheet, and absorbent core interposed between these sheets,
An absorbent article having a mounting member that can be removably mounted on the inner surface of clothes on the back sheet, wherein the mounting member has a shaft erected substantially perpendicular to the substrate, and at least one direction at the tip of the shaft. A hook member of a fastener having a plurality of hook elements composed of a cap formed by a protruding portion extending in a vertical direction, the cap of the hook element being at least one of a longitudinal direction and a right angle direction of the cap. Diameter 275
An absorbent article having a size of from μm to 375 μm.

According to the absorbent article of the present invention, the attachment member is provided on the back surface of the absorbent body. This attachment member is composed of a plurality of hook elements each of which is composed of a shaft having a substantially circular cross-section, which is erected substantially vertically on a substrate made of the same material as the hook device, and an oval cap extending in the left-right direction at the tip of the shaft. It is the hook member of the fastener that it has (see FIG. 2).

Further, the cap diameter of the hook element is 275 to 375 μm in either the longitudinal direction or the right angle direction of the oval cap. Within this range, there is a high probability that the fibers will be attached to relatively small loop-shaped fibers formed on the surface of the cloth material such as 100% cotton, and the pitch between the hook elements is 630 μm, for example.
That is, in the case of a fastener hook member having 1600 pieces per 1 inch square and arranged at substantially equal intervals, the distance between adjacent caps is 255 to 355 μm, and the distance between the caps is wider than in the conventional case, so that the cloth material The probability that the formed loop-shaped fibers enter between the hook elements is significantly increased. Therefore, even when the absorbent article is attached to a cloth material having a small amount of loop fibers, such as a cotton cloth, the ratio of the loop fibers being caught by the cap of the hook element increases, so that the cloth material for clothes such as pants is absorbed. It is possible to secure an engaging force suitable for actual use when mounting and wearing the sexual article.

(2) Water-permeable top sheet, water-impermeable back sheet, absorbent core interposed between these sheets,
An absorbent article having a mounting member that can be removably mounted on the inner surface of clothes on the back sheet, wherein the mounting member has a shaft erected substantially perpendicular to the substrate, and at least one direction at the tip of the shaft. A hook member of a fastener having a plurality of hook elements composed of a cap formed by a protruding portion extending in the direction of the hook, the hook elements being adjacent to each other in at least one of a longitudinal direction and a right angle direction of the cap. The absorbent article having a distance between the caps of 255 μm to 355 μm.

According to the absorbent article of the present invention, the attachment member is provided on the back surface of the absorbent body. This attachment member is composed of a plurality of hook elements each of which is composed of a shaft having a substantially circular cross-section, which is erected substantially vertically on a substrate made of the same material as the hook device, and an oval cap extending in the left-right direction at the tip of the shaft. It is the hook member of the fastener that it has (see FIG. 2).

Further, since the distance between the caps of the adjacent hook elements is 255 to 355 μm in either the longitudinal direction or the right angle direction of the oval caps, the distance between the caps becomes wider than the conventional one. The probability that the loop-shaped fibers formed on the cloth material will enter between the hook elements is significantly increased. Therefore, even when the absorbent article is attached to a cloth material having a small amount of loop fibers, such as a cotton cloth, the ratio of the loop fibers being caught by the cap of the hook element increases, so that the cloth material for clothes such as pants is absorbed. It is possible to secure an engaging force suitable for actual use when mounting and wearing the sexual article.

(3) The cap of the mounting member is in the shape of an oval disk, and the cap diameter of the hook element is 275 μm to 375 μm in at least one of the longitudinal direction and the perpendicular direction of the cap. The absorbent article according to (1) or (2), wherein the protrusion has a dimension of 75 μm to 175 μm.

In the absorbent article mounting member according to the present invention, the cap diameter of the hook element is 2 in either the longitudinal direction or the perpendicular direction of the oval cap.
75 to 375 μm, and the size of the cap protrusion protruding outward from the axis of the hook element is 75 to 175 μm, so the pitch between the hook elements is 630 μm, that is, 1600 pieces per square inch are arranged at substantially equal intervals. In the case of a hook member of a fastener that is used, the distance between adjacent caps is 255 to 355 μm, the cap diameter is small, and even relatively small loop-shaped fibers easily enter the cap, and the distance between the caps is also small. Since it is wider than the conventional one, the probability that the loop-shaped fibers formed on the cloth material will enter between the hook elements is significantly increased. Therefore, even when the absorbent article is attached to a cloth material having a small amount of loop fibers such as a cotton cloth, the ratio of the loop fibers hooked on the cap of the hook element is increased,
It is possible to secure an engaging force suitable for actual use when the absorbent article is attached to a cloth material such as pants and the like and worn.

Further, since the size of the cap protrusion protruding outward from the axis of the hook element is 75 to 175 μm, the loop-shaped fiber engaged with the cap does not easily come off from the cap, so that the absorbability is improved. When the article is attached to the cloth material for clothes and used, it has a sufficient engaging force. Here, the size of the cap protrusion means the size of the difference between the cap diameter and the shaft diameter of the hook element.

(4) The cap of the mounting member is in the shape of an oval disk, and the cap diameter of the hook element is 275 μm to 375 μm in at least one of the longitudinal direction and the perpendicular direction of the cap. The size of the protruding portion is 75 μm to 175 μm, and the distance between the caps of adjacent hook elements is 255 μm to 355 μm.
The absorbent article according to any one of (1) to (3), wherein the absorbent article is μm.

In the attachment member for an absorbent article according to the present invention, the hook element has a cap diameter of 2 in either the longitudinal direction or the orthogonal direction of the oval cap.
75 to 375 μm, the size of the cap protrusion protruding outward from the axis of the hook element is 75 to 175 μm, and the distance between the caps is set to 255 to 355 μm, the cap diameter is reduced, and the distance between the caps is reduced. Since it is also wider than the conventional one, the probability that the loop-shaped fibers formed in the cloth material will enter between the hook elements is significantly increased. Therefore, even when the absorbent article is attached to a cloth material having a small amount of loop fibers, such as a cotton cloth, the ratio of the loop fibers being caught by the cap of the hook element increases, so that the cloth material for clothes such as pants is absorbed. It is possible to secure an engaging force suitable for actual use when mounting and wearing the sexual article.

Furthermore, since the size of the cap protrusion projecting outward from the axis of the hook element is 75 to 175 μm, the loop-shaped fiber engaged with the cap does not easily come off from the cap, and the absorbent article. When the product is attached to the cloth material for clothing and used, it has a sufficient engaging force.

(5) The arrangement pitch of the hook elements is 30
It is 0-1000 micrometers, The absorbent article in any one of (1) to (4) characterized by the above-mentioned.

In handling when the absorbent article of the present invention is attached to or detached from clothes, the arrangement pitch of the hook elements is 300 to 1000 μm, depending on the feel when touching the attachment member of the absorbent article and the degree of being caught on the skin of the hand. It is preferably 500 to 850 μm, more preferably 600 to 70.
When the thickness is 0 μm and falls within the above range, the tactile feel is good and the skin of the hand is not caught.

(6) The arrangement pitch of the hook elements is 63
It is 0 micrometer, The absorbent article in any one of (1) to (5) characterized by the above-mentioned.

In the mounting member of the absorbent article according to the present invention, the arrangement pitch of the hook elements is within the above range,
Most preferably, it is 630 μm. This pitch is about the same as the pitch of the hook member of a fastener that has been widely used in the past, and is preferable in that no particular discomfort is generated.

(7) The shaft diameter of the hook element is 160 to
It is 240 micrometers, The absorbent article in any one of (1) to (6) characterized by the above-mentioned.

In the absorbent article mounting member according to the present invention, when the axis of the hook element is set to 160 to 240 μm, when the absorbent article is attached to a garment and used, a loop-shaped fiber is formed. Even if shearing force is applied to the engaging part with the hook element, the axis of the hook element does not bend,
The engaged state can be maintained. Also, the size of the cap protrusion does not become too small. Therefore, since the loop-shaped fiber engaged with the cap does not easily come off from the cap, it has a sufficient engaging force when the absorbent article is attached to the cloth material for clothes and used.

(8) The height of the hook element is 300 μm
To 1000 μm, the absorbent article according to any one of (1) to (7).

In the absorbent article according to the present invention, by setting the height of the hook element to 300 to 1000 μm, the hook element does not bend and the loop-shaped fiber formed on the cloth material is easily formed between the hook elements. You will be able to enter.

That is, unlike the case where the height of the hook element is low, the hook element becomes smaller than the loop-shaped fiber formed on the cloth material, and the loop-shaped fiber and the hook element are not easily engaged with each other. Also, unlike the case where the height is high, the hook element is not easily bent, and the loop-shaped fiber does not easily enter between the hook elements, so that there is no inconvenience that the hook element cannot be engaged.

(9) The height of the hook element is 300 μm
To 460 μm, the absorbent article according to any one of (1) to (7).

In the absorbent article according to the present invention, by setting the height of the hook element to 300 to 460 μm, the hook element does not bend, and the loop-shaped fiber formed on the cloth material is more easily interposed between the hook elements. Will be able to enter.

That is, as in the case where the height of the hook element is low, the hook element becomes smaller than the loop-shaped fiber formed on the cloth material, and the loop-shaped fiber and the hook element do not easily engage with each other. In addition, unlike the case where the height is high, the hook element is not easily bent, so that it is difficult for the loop-shaped fiber to enter between the hook elements and there is no inconvenience that the hook elements cannot be engaged.

(10) Peeling peel strength has a fiber diameter of 2
The absorbent article according to any one of (1) to (9), wherein the absorbent article has 0.05 N / 80 mm or more with respect to a 100% cotton fabric with a smooth count of 0 μm at 30 count.

In the absorbent article according to the present invention, when the cloth material has a fiber diameter of 20 μm and is attached to a garment of smooth knit 100% cotton cloth, the peeling peel strength is 0.0.
Since it is 5 N / 80 mm or more, the absorbent article does not peel off when it is worn by wearing the cotton cloth such as pants on the absorbent article.

That is, when wearing a garment equipped with the absorbent article of the present invention, the peel strength required for holding the absorbent article without peeling is 0.05 N / 80 mm or more at 135 ° peeling tension. There is sufficient peel strength as compared with this strength.

(11) A shear-strength fabric having a fiber diameter of 20 μm and a No. 30 smooth knitted 100% cotton fabric, 2.
The absorbent article according to any one of (1) to (9), which has 5 N / 80 mm or more.

[0039] In the absorbent article according to the present invention, the cloth material has a fiber diameter of 20 µm and a shear strength of 5.0 N / 80 when it is attached to a garment of a smooth knit 100% cotton cloth having a count of 30.
Since it is not less than mm, the absorbent article will not be displaced even if the absorbent article is worn by wearing the cloth of cotton fabric such as pants on and around.

That is, when the absorbent article of the present invention is moved around while wearing a garment, the shear strength required for holding the absorbent article without displacement is 2.5 N / 8.
It is 0 mm or more, and has a sufficient shear strength as compared with this strength.

(12) The hook member of the fastener is arranged on the back sheet of the absorber in an area of 1000 mm 2 or more (1) to (11)
The absorbent article according to any one of the above.

In the absorbent article according to the present invention, since the hook member of the fastener for attaching to the cloth material for clothes is provided on the back sheet of the absorbent body in an area of 1000 mm 2 or more, the absorbent article is made of cotton cloth. Suitable strength (tensile peeling strength, shear strength) is obtained when the cloth material having a small amount of loop fibers such as the above is attached and used, and peeling or deviation from the cloth material does not occur.

(13) The absorbent article according to any one of (1) to (12), wherein a plurality of hook members of the fastener are arranged on the back sheet of the absorbent body.

In the absorbent article according to the present invention, since a plurality of hook members of the fastener as described above are provided on the back sheet of the absorbent body, the absorbent article is made of a cloth material such as cotton cloth having a small amount of loop fibers. When attached, it can be attached anywhere. For this reason, peeling and displacement are less likely to occur when the product is used while being worn on clothes.

(14) The absorbent article as set forth in any one of (1) to (13), which is an absorbent article for wearing on a cloth material.

Since the absorbent article according to the present invention has a structure provided with the hook member of the fastener as described above, it has a sufficient engaging force even for the cloth material such as cotton cloth which has been difficult to wear until now. Will be able to demonstrate.

[0047]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an absorbent article provided with a mounting member according to the present invention, FIG. 2 is a perspective view of the mounting member provided in the absorbent article, and FIG. 3 is a hook of the mounting member. FIG. 4 is a perspective view showing an element, FIG. 4 is a partially enlarged view of a mounting member, (A) is a sectional view, and (B) is a plan view.

<Basic Structure> Absorbent article 1 of this embodiment
As shown in FIG. 1, a top sheet 2 (on the body side) made of a water-permeable material, a back sheet 3 (on the body side) made of a water-impermeable material, and an absorbent body 5 made up of an absorbent core 4, and a back surface. And a mounting member 6 arranged on the seat 3.

[Absorbent Body] The absorbent body 5 is, for example, a urine absorbing pad, a sanitary napkin, or the like, and the topsheet 2 and the backsheet 3 are joined together at their peripheral portions so as to enclose the absorptive core 4. It is formed integrally. Since the back sheet 3 is a water impermeable material, the absorbent core 4
It prevents liquid such as urine held in the tank from leaking out.

[Mounting Member] As shown in FIG. 2, the mounting member 6 is a hook member of a fastener formed by vertically arranging a plurality of substantially mushroom-shaped hook elements 8 on a thermoplastic resin substrate 7. . Further, the hook element 8 is
As shown in FIG. 3, a shaft 9 having a substantially circular cross-section, which is erected substantially vertically from the substrate 7, and an elliptic cap 10 extending in the left-right direction at the tip of the shaft 9 are formed. . The substrate 7 and the hook element 8 are made of the same material.

The size of the mounting member 6 is 1000 square millimeters or more, preferably about 1200 square millimeters. In addition, in the present embodiment, the mounting member 6 is arranged as a single unit, but the present invention is not limited to this, and the mounting member 6 is divided into a plurality of pieces, and the divided mounting members are appropriately arranged. You may do it.

<Hook Element Shape and Arrangement Pitch> Here, the hook element 8 has a height of 300 to 1000 μm, most preferably 300 to 460 μm, and a shaft 9 having a diameter of 1
It is about 60 to 240 μm, and the pitch of adjacent hook elements is arranged at 300 to 1000 μm.

The height of the hook element 8 is 300 to 1000 μm.
However, if it is less than 300 μm, it becomes smaller than the loop-shaped fiber formed on the cloth material, and it becomes difficult to engage the loop-shaped fiber and the hook element 8. On the other hand, 1000μ
When it is higher than m, the hook element 8 is easily bent when engaging, and the loop-shaped fiber cannot enter between the hook elements 8. For this reason, the loop-shaped fiber and the hook element 8 cannot be engaged with each other.

Further, the diameter of the shaft 9 of the hook element 8 is 160 to
Although it is about 240 μm, if it is thinner than 160 μm, the shaft 9 of the hook element 8 is easily bent, and the hook element 8 is bent and the loop-shaped fiber caught on the cap is easily removed. Further, if the diameter of the shaft 9 is too large, the size of the protruding portion of the cap 10 protruding from the shaft 9 becomes small, so that the loop-shaped fiber is less likely to be caught, and the engagement between the loop-shaped fiber and the hook element 8 is small, which is sufficient. Cannot be obtained.

The arrangement pitch between the hook elements 8 is 3
00-1000 μm, preferably 500-850 μm,
More preferably, it is 600 to 700 μm, and in the embodiment, they are arranged at a pitch of 630 μm (1600 per square inch). The arrangement pitch may be appropriately determined in consideration of the feel when the attachment member is touched, the catch on the skin of the hand, and the like when the absorbent article 1 is handled.
Most preferably, it is μm (1600 per square inch). With this pitch, the touch is almost the same as that of a hook member of a fastener that has been widely used in the past, and it is optimal in that it does not cause a feeling of strangeness.

<Cap Diameter of Hook Element> As shown in FIG. 4B, in either the longitudinal direction (CD direction in the drawing) or the perpendicular direction (MD direction in the drawing) of the oval cap 10, The hook element 8 has a cap diameter of 275 to 375 μm. Within this range,
There is a high probability that even a relatively small loop-shaped fiber formed on the surface of the cloth material such as 100% cotton will be attached. Further, for example, in the case of the hook members of the hook fastener in which the pitch between the hook elements is 630 μm, that is, 1600 pieces per 1 inch square are arranged at substantially equal intervals, the distance between the adjacent caps is 255 to 355 μm, and Since the distance is wider than in the conventional case, the probability that the loop-shaped fibers formed on the cloth material will enter between the hook elements is significantly increased. Therefore, even when the absorbent article is attached to a cloth material having a small amount of loop fibers, such as a cotton cloth, the ratio of the loop fibers being caught by the cap of the hook element increases, so that the cloth material for clothes such as pants is absorbed. It is possible to secure an engaging force suitable for actual use when mounting and wearing the sexual article.

<Hook Element Cap Projection Dimension> Further, as shown in FIGS. 3 and 4, the cap 10 of the hook element 8 has an oval shape extending in the left-right direction at the tip of the shaft 9. The dimension of the cap protrusion protruding from the shaft 9 is 75 to 175 μm. In addition to the shape of the protruding portion of the cap protruding from the shaft 9 of the hook element 8 in both left and right directions, the protruding portion may have a shape protruding in only one direction.

The size of the cap protrusion is the same as that of the cap 1.
The difference between the diameter of 0 and the diameter of the shaft 9, and in the case of a shape that is symmetrically projected in both left and right directions, it means the sum of the dimensions w1 of the protrusions that project in both directions.

<Distance between Caps of Hook Element> FIG. 4
As shown in (B), the distance d between the caps 10 of the hook elements 8 adjacent to each other in either the longitudinal direction (CD direction in the drawing) or the perpendicular direction (MD direction in the drawing) of the oval caps 10. Is 255-355 μm
Is.

For this reason, the distance between the caps 10 becomes wider than in the conventional case, and the probability that the loop-shaped fibers formed in the cloth material will enter between the hook elements 8 will be significantly increased. Therefore, even when the absorbent article is attached to a cloth material having a small amount of loop fibers, such as a cotton cloth, the ratio of the loop fibers being caught by the cap 10 of the hook element 8 increases, so that the cloth material for clothes such as pants is used. It is possible to secure an engaging force suitable for actual use when the absorbent article is mounted and worn.

If the diameter of the cap 10 of the hook element 8, the dimension of the cap protrusion, and the distance between the caps 10 are within the above ranges, as shown in Table 1 described later, the absorbability of cloth such as pants for cloth cloth is shown. Engaging force of article 1 (tensile peel strength,
(Shear strength) is a level suitable for actual use when attaching and detaching, that is, the tensile peel strength is 0.05 to 1.00 N / 80 mm
(Preferably 0.15 to 0.500 N / 80 mm), shear strength 2.5 to 30.0 N / 80 mm (preferably 5.
Since it satisfies 0 to 20.00 N / 80 mm), there is no problem in actual use.

For example, the hook elements 8 are arranged at a pitch of 630 μm on the substrate 7 having a length of 15 mm and a width of 80 mm, the shaft 9 of the hook elements 8 has a diameter of about 200 μm and a height of about 380 μm, and the hook elements 8 are in the CD direction. The cap diameter is 347 μm (the distance between the caps is 283 μm), and the protrusion size w1 of each of the cap protrusions that project symmetrically in the left and right directions is 75 μm, while the cap diameter in the MD direction is 280 μm (the distance between the caps is 350μ
m), the absorbent article 1 provided with the hook member 6 of the fastener in which the protrusion size of each of the cap protrusions protruding symmetrically in both directions is 40 μm is 30 μm at a fiber diameter of 20 μm.
The engagement force (tensile peel strength) in a 135 ° peeling test when the material was engaged with a 100% cotton fabric of smooth knitting was 0.11 N / 80 mm. This value is stronger than the engaging force of 0.05 N / 80 mm, which is necessary to hold the absorbent article 1 so that the absorbent article 1 is not detached from the clothes when the absorbent article 1 is attached to the clothes made of cotton cloth. The result was sufficiently applicable to actual use. In addition, the engaging force (shear strength) in the shearing direction is 5.4 N / 80 mm, and this value is so that the absorbent article 1 does not shift even if the absorbent article 1 moves around while wearing the clothes wearing the absorbent article 1. The result was stronger than the required strength of 2.5 N / 80 mm.

The hook element 8 is engaged with the cloth material 11 by pressing the hook member 6 of the fastener on the cloth material 11 as shown in FIG. 5, so that the loop-shaped fibers 12 formed on the cloth material 11 are adjacent to each other. Enter between the elements 8,
This is performed by hooking on the cap 10 as shown in FIG. 5 (B). At this time, when the distance d between the caps of the adjacent hook elements 8 is smaller than 275 μm, that is, when the cap diameter is larger than 375 μm and the size of the projection of the cap 10 is larger than 175 μm, the cloth material 1
The probability that the loop-shaped fiber 12 formed in No. 1 enters between the hook elements 8 becomes low. For this reason, the proportion of the loop-shaped fibers 12 engaging with the cap 10 is reduced, and an engaging force sufficient to hold the absorbent article 1 so as not to separate from the cloth material 11 cannot be obtained. When the distance d between the caps 10 of the adjacent hook elements 8 is larger than 375 μm, that is, when the cap diameter is smaller than 275 μm and the dimension w of the cap protrusion is smaller than 75 μm, the distance between the caps of the adjacent hook elements 8 is small. Is increased, the probability that the loop-shaped fiber 12 enters between the hook elements 8 is increased, but the size of the cap protrusion is reduced, and the cap 10
Since the loop fiber 12 caught on is easily disengaged, there is a disadvantage that a sufficient engaging force cannot be obtained.

Here, an example of a method of evaluating the engagement force will be described. Such an evaluation method is to measure the engaging force of the absorbent article with respect to the cloth material, that is, the 135 ° peeling peel strength (see FIG. 6) and the shear strength (see FIG. 7). 100 mm x width 50
mm stainless plate is used. Before performing the evaluation test, a cloth material such as a cotton cloth having substantially the same size as the stainless steel plate is attached to the stainless steel plate in advance. Also, a hook member of a fastener having a length of 15 mm and a width of 80 mm is attached to a release film or a non-woven fabric hook support to prepare a test body. In the 135 ° peeling peel strength test, the test body is placed on a stainless plate so that the hook member surface of the fastener comes into contact with the cloth material, and the fastener hook member is reciprocated once with a roller of 700 g. Then, as shown in FIG.
Pulling at mm / min, the weighted average value (me
an) is recorded as data. On the other hand, in the shear strength test, the hook member of the fastener is reciprocated once with a 2 kg roller. Then, as shown in FIG. 7, the sample is pulled in the direction of arrow B at 100 mm / min, and the maximum point strength (max.) At that time is recorded as data.

Table 1 shows the results of measurement by the above method while changing the cap diameter, the size of the cap protrusion and the distance between the caps. In Table 1, with respect to the 135 ° peeling peel strength and the shear strength, the case of having an engaging force suitable for mounting and use was evaluated with a circle.

[0067]

[Table 1]

From this result, the cap diameter is 275-37.
5 μm, the dimension of the cap protrusion is 75 to 175 μm, and the distance between the caps is 255 to 355 μm, the engaging force (tensile peel strength, shear strength) of the absorbent article 1 with respect to the cloth material is suitable for actual use. Sufficiently meets the appropriate level and does not pose a problem in actual use.

Further, the hook members 6 of the fastener are provided along the width direction near both ends of the absorbent body 5 in the longitudinal direction, but as shown in FIG. It may be provided. Further, the number thereof may be appropriately selected according to the size and shape of the absorbent article 1. Large urine collection pads such as the one shown in Figure 1
It is preferable to provide a number of pieces or more.

[Cloth Material] Next, the cloth material 11 to which the absorbent article 1 is attached. The cloth material is mainly made of 100% cotton cloth, and urethane mixed cotton mixed with urethane fibers for imparting elasticity is used. It may be polyester blended cotton mixed with polyester fiber for comfort. Further, it is knitted with 20 to 40 count yarn in which fibers having a fiber diameter of 5.0 to 37.5 μm are twisted, and the knitting method may be any of smooth knitting, plain knitting, kanoko knitting and the like.

Here, when the fiber diameter is thicker than 37.5 μm, the fiber diameter is larger than the protruding portion of the cap 10 even when the hook element 8 has the smallest protruding dimension of the cap 10, and therefore even if it is caught by the cap 17. This is inconvenient because it may come off. On the other hand, when the thickness is smaller than 5.0 μm, the strength of the loop-shaped fiber is weak and a sufficient engaging force cannot be obtained, which is inconvenient.

[0072]

As described above, according to the present invention,
The cap diameter of the hook element is 275 to 375 μm in either the longitudinal direction or the right angle direction of the cap.
By disposing the mounting member having the above structure in the absorber, even if the number of loop-shaped fibers is small and the density thereof is sparse like a cloth material such as 100% cotton, a loop is formed between adjacent hook elements. The probability that the filamentous fibers enter will be extremely high, and the engaging force with respect to the cloth material will be improved. Further, since the engaging force is also a strength suitable for practical use in which the absorbent article is attached to and detached from the inner surface of the clothing, when the absorbent article is attached to and worn on the cloth material, the absorbent article is peeled off from the cloth material. Never. Further, when the absorbent article is removed from the cloth material after use, the fibers of the cloth material are not loosened.

Further, the dimension of the cap protruding portion is set to 75 to 17
By disposing an attachment member having a structure of 5 μm or a distance between the caps of adjacent hook elements of 255 μm to 355 μm on the absorber, the number of loop-shaped fibers can be reduced like a cloth material such as 100% cotton. Even if the density is sparse, the probability that the loop-shaped fibers will enter between the adjacent hook elements becomes extremely high, and the engaging force with respect to the cloth material is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an absorbent article provided with a mounting member according to the present invention.

FIG. 2 is a perspective view of a mounting member arranged in the absorbent article according to the present invention.

FIG. 3 is a perspective view showing a hook element of a mounting member.

FIG. 4 is a partially enlarged view of a mounting member, (A) is a sectional view and (B) is a plan view.

FIG. 5 is a schematic view showing an engagement state between the loop fiber and the attachment member, (A) showing a state before engagement;
(B) is a diagram showing a state of being engaged.

FIG. 6 is an explanatory diagram for explaining a method for measuring the peel strength of an absorbent article in the method for evaluating the engaging force when engaging the absorbent article having the attachment member arranged on the cloth material.

FIG. 7 is an explanatory diagram for explaining a method of measuring the shear strength of an absorbent article in the method of evaluating the engagement force when engaging the absorbent article having the attachment member arranged on the cloth material.

FIG. 8 is a perspective view showing an absorbent article according to the present invention in which a mounting member is arranged along the longitudinal direction of the absorbent body.

[Explanation of symbols]

1 absorbent article 2 Top sheet 3 back sheet 4 Absorbent core 5 absorber 6 Mounting member (fastener hook member) 7 substrate 8 hook elements 9 axes 10 cap 11 cloth fabric 12 loop fiber

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuaki Onishi             1531-7 Wadahama Takasuka, Toyohama Town, Mitoyo District, Kagawa Prefecture               Unicharm Corporation Technical Sen             Inside F-term (reference) 4C003 FA00

Claims (14)

[Claims] 1. A mounting member having a water-permeable front sheet, a water-impermeable back sheet, and an absorbent core interposed between the both sheets, the attachment member being removably attachable to the inner surface of clothes on the back sheet. In an absorbent article provided with a plurality of hook elements, the mounting member comprises a shaft erected substantially perpendicular to the substrate, and a cap formed by a protrusion extending in at least one direction at a tip of the shaft. A hook member of a fastener having a plurality of fasteners, wherein the cap diameter of the hook element is 275 μm to 375 μm in at least one of a longitudinal direction and a right angle direction of the cap. 2. A mounting member having a water-permeable top sheet, a water-impermeable back sheet, and an absorbent core interposed between the both sheets, the attachment member being removably attachable to the inner surface of clothes on the back sheet. In an absorbent article provided with a plurality of hook elements, the mounting member comprises a shaft erected substantially perpendicular to the substrate, and a cap formed by a protrusion extending in at least one direction at a tip of the shaft. A hook member of a fastener having a plurality of pieces, wherein a distance between caps of adjacent hook elements is 255 μm to 355 μm in at least one of a longitudinal direction and a right angle direction of the cap. 3. The cap of the mounting member is in the shape of an elliptical disc, and the cap diameter of the hook element is 275 μm to 375 μm in at least one of the longitudinal direction and the right angle direction of the cap, and the cap is projected. The absorbent article according to claim 1 or 2, wherein the size of the part is from 75 µm to 175 µm. 4. The cap of the mounting member is in the shape of an elliptical disk, and the cap diameter of the hook element is 275 μm to 375 μm in at least one of the longitudinal direction and the perpendicular direction of the cap, and the cap protrusion. The absorbent article according to any one of claims 1 to 3, wherein the size of the portion is 75 µm to 175 µm, and the distance between the caps of adjacent hook elements is 255 µm to 355 µm. 5. The arrangement pitch of the hook elements is 300 μm
To 1000 μm, the absorbent article according to any one of claims 1 to 4. 6. The arrangement pitch of the hook elements is 630 μm.
The absorbent article according to any one of claims 1 to 5, wherein 7. The absorbent article according to claim 1, wherein the hook element has a shaft diameter of 160 μm to 240 μm. 8. The height of the hook element is from 300 μm to 1
It is 000 micrometers, The absorbent article in any one of Claim 1 to 7 characterized by the above-mentioned. 9. The height of the hook element is from 300 μm to 4
It is 60 micrometers, The absorbent article in any one of Claim 1 to 7 characterized by the above-mentioned. 10. Peeling peel strength, fiber diameter 20 μm
For 100th cotton fabric with smooth knitting,
It has 0.05 N / 80 mm or more, The absorbent article in any one of Claim 1 to 9 characterized by the above-mentioned. 11. A shear strength of 2.5 N / for a smooth knit 100% cotton fabric with a fiber diameter of 20 μm and a count of 30
It has 80 mm or more, The absorbent article in any one of Claim 1 to 9 characterized by the above-mentioned. 12. The absorbent article according to any one of claims 1 to 11, wherein the hook member of the fastener is arranged on the back sheet of the absorber in an area of 1000 mm 2 or more. 13. The plurality of hook members of the fastener are arranged on the back sheet of the absorbent body.
12. The absorbent article according to any one of 1 to 12. 14. The absorbent article according to claim 1, which is an absorbent article for wearing on a cloth material.