JP2020130647A - Pad type absorbent article - Google Patents

Abstract

To provide a pad type absorbent article comprising an advantage such as excellent deformation holding property.SOLUTION: A pad type absorbent article 10 comprises: a slender tension member 4 provided between a top sheet 2 and a back sheet 1. The tension member 4 comprises: a first part 4a provided on a peripheral edge part of a deformation holding region T; and a second part 4b extending in a traversing manner on the deformation holding region T from the first part 4a. The first part 4a is fixed to a member which is adjacent to one side or both sides of front and back sides of the first part. The second part 4b comprises: a knob part 4d having an end part opposite to the first part 4a; and a free part 4c provided between the first part 4a and the knob part 4d. The free part 4c is a part which is not fixed to a member adjacent to both sides of front and back sides of the free part. The knob part 4d is a part protruded to outside of the pad type absorbent article 10.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pad-type absorbent article that is used by being deformed into a tubular shape or the like.

As absorbent articles (diapers), in addition to basic absorbent articles (also called outerwear) such as pad type, tape type, and pants type, smaller pad type absorbent articles (also called outerwear) that are supposed to be used in combination with these. (Also called inner) is provided, and these combinations are widely used especially in nursing care sites such as care facilities.

Especially when the wearer is a man, the urination position changes depending on the position of the penis, so there is a problem that leakage from around the legs is likely to occur, and in order to solve this problem at the care site, a pad type absorbent article is used. By bending it in a bellows shape and arranging the penis in the valley, it is possible to fill the gap generated in the groove at the base of both legs from the groin to the crotch, or to roll it into a cone and wrap it around the penis ( Hereafter, measures such as (also referred to as male winding) are taken (see, for example, Patent Documents 1 and 2). Even in the case of women, measures such as bending the pad-type absorbent article in a bellows shape to fill the gaps at appropriate positions such as the gaps generated in the grooves at the bases of both legs from the groin to the crotch may be taken. ..

In such a mounting form, it is necessary to fold or roll the pad type absorbent article, but the pad type absorbent article has a certain degree of rigidity because it has a built-in absorber. , It is not easy to deform into a desired shape and maintain that shape.

As a solution to this problem, it has been proposed to form linear easily bent portions at intervals in the vertical direction by embossing or the like, as described in Patent Documents 3 and 4.

However, those described in Patent Documents 3 and 4 are not fixed in the deformed shape, so there is room for improvement in deformation retention. Another problem is that if the absorber is provided with an easily bent portion, the liquid content of excrement is likely to diffuse along the easily bent portion, which affects the absorption characteristics.

Japanese Unexamined Patent Publication No. 2006-212452 Japanese Unexamined Patent Publication No. 2001-129012 JP-A-2009-178235 Japanese Unexamined Patent Publication No. 2012-205792

Therefore, a main object of the present invention is to provide a pad-type absorbent article having advantages such as excellent deformation retention.

The pad-type absorbent articles that have solved the above problems are as follows.
<First aspect>
In a pad-type absorbent article comprising an absorber, a liquid-permeable top sheet covering the front side of the absorber, and a back sheet covering the back side of the absorber.
It has an elongated tension member provided between the top sheet and the back sheet.
The tension member has a first portion located at the peripheral edge of the deformation holding region and a second portion extending from the first portion across the deformation holding region.
The first portion is fixed to a member adjacent to either one side or both sides thereof.
The second portion has a knob portion including an end portion opposite to the first portion and a free portion located between the first portion and the knob portion.
The free portion is a portion that is not fixed to members adjacent to both the front and back sides thereof.
The knob is a portion of the pad-type absorbent article that projects outward or is fixed to a portion that is separable from the surroundings.
A pad-type absorbent article characterized by that.

(Action effect)
This pad-type absorbent article has a shape in which the tension member is pulled out by pinching the knob portion of the tension member, and the passing portion of the tension member is contracted in the passing direction of the tension member while being balanced (or easily balanced) in the contracted state. When the deformation holding region is deformed, the deformation is held as compared with the one having no tension member. This is because the pulled-out tension member is not pulled in by the frictional force with the member that presses against both the front and back sides, or by winding the tension member and sandwiching it between the wound part and the pad-type absorbent article (original). This is because the deformed shape is maintained as a result of maintaining the contraction force acting on the passing portion of the tension member.

<Second aspect>
In the unfolded state, it has a rectangular shape with a long side along the vertical direction and a short side along the horizontal direction.
As the tension member, at least other than the pad type absorbent article, passing between the absorber and the top sheet, crossing the absorber in the vertical direction from one end in the vertical direction of the absorber. Includes tension members, extending to the end,
The pad type absorbent article of the first aspect.

(Action effect)
When the tension member is pulled out with this pad type absorbent article, the top sheet side contracts in the vertical direction, so that the deformation holding region is easily deformed into a curved shape such that the top sheet is on the center of curvature side (balanced shape). Therefore, this pad-type absorbent article is suitable for being deformed into a tubular shape, a conical shape, or a truncated cone shape, and is therefore suitable for male winding. Further, for the same reason, the pad type absorbent article is also suitable for being deformed into a bellows shape having a plurality of curved portions in the vertical direction such that the top sheet is on the center side of curvature.

<Third aspect>
In the unfolded state, it has a rectangular shape with a long side along the vertical direction and a short side along the horizontal direction.
It has side flaps extending laterally on both sides of the absorber.
The tension member includes a tension member that extends from one end in the longitudinal direction of the side flap to at least the other end of the side flap in the longitudinal direction along the longitudinal direction.
The pad-type absorbent article of the first or second aspect.

(Action effect)
When the tension member is pulled out with this pad type absorbent article, the side flaps that do not have an absorber contract in the vertical direction, so the deformation holding region has a curved shape such that the top sheet is on the center of curvature, and the back sheet. It has a curved shape that is on the center of curvature, and is easily deformed (balanced shape). Therefore, this pad-type absorbent article is suitable for being deformed into a tubular shape, a conical shape, or a truncated cone shape, and is therefore suitable for male winding. In particular, by pulling out the tension member, the side flaps can be tightly squeezed in a spiral shape, so that there is an advantage that a male winding with a closed tip can be realized.

<Fourth aspect>
The absorber contains a highly absorbent polymer and contains
The first portion is fixed to a member adjacent to either one of the front and back sides or both sides thereof via a water-soluble adhesive, and is provided at a position where it can come into contact with the liquid content of excrement.
A pad-type absorbent article according to any one of the first to third aspects.

(Action effect)
Highly absorbable polymers involve swelling in absorbing excrement fluid. Therefore, inhibition of expansion of the highly absorbent polymer means inhibition of absorption. However, when the pad-type absorbent article is deformed into a tubular shape or the like, the absorber is partially compressed, and if the liquid content of the excrement is to be absorbed as it is, the expansion (absorption) of the highly absorbent polymer is inhibited. To. On the other hand, when the first part of the tension member is fixed by the water-soluble adhesive as in this embodiment, the tension member is fixed by the contact between the first part of the tension member and the liquid content of excrement. Comes off. That is, the passing portion of the tension member in the pad-type absorbent article becomes movable with respect to the tension member, and the deformation holding action of the tension member is weakened. As a result, the expansion force of the absorber (highly absorbent polymer) allows the tubular shape or the like of the pad-type absorbent article to expand (become loose) so as to allow the expansion. Therefore, it is possible to reduce the absorption inhibition when absorbing the liquid content of excrement.

<Fifth aspect>
The first portion is provided only at a position overlapping the absorber or close to the periphery of the absorber.
The pad type absorbent article of the fourth aspect.

(Action effect)
When fixing the first portion of the tension member with a water-soluble adhesive, the position of the first portion is preferably within this range.

<Sixth aspect>
The tension member is an elastic member that elastically expands and contracts in the longitudinal direction.
A pad-type absorbent article according to any one of the first to fifth aspects.

(Action effect)
When the tension member is such an elastic member, the elastic member expands as the tension member is pulled out to deform the deformation holding region, and the contraction force acts on the passing portion of the tension member in the deformation holding region. The deformed state is elastically maintained, and the fit to the wearer's body surface is improved. Further, since the tension member can be elastically stretched, the above-mentioned absorption inhibition can be reduced. In particular, when the tension member is an elastic material itself such as rubber, the frictional force on the surface becomes strong and the tension member once pulled out is less likely to be pulled in, which is preferable.

<7th aspect>
It has a flap that extends outward from the periphery of the absorber.
The flap has a separablely connected separation portion through a perforation.
The knob portion of the second portion is fixed to the separation portion.
A pad-type absorbent article according to any one of the first to sixth aspects.

(Action effect)
When manufacturing a pad-type absorbent article, after forming a continuous band in which the individual pad-type absorbent articles repeat in the MD direction, at the boundary of the individual pad-type absorbent articles adjacent in the MD direction. The method of cutting is common. With such a manufacturing method, it is not impossible, but not easy, for the tension member to protrude from the peripheral edge of the product. On the other hand, if a separation portion is provided on the flap as in this embodiment and the knob portion of the tension member is fixed to this separation portion, the tension member does not have to protrude from the peripheral edge of the product, so that the manufacturing is only facilitated. However, it also has the advantage of making it easier to pinch the gripped portion of the tension member.

According to the present invention, there are advantages such as excellent deformation retention.

It is a top view which shows the front side of the pad type absorbent article in the unfolded state. It is a top view which shows the back side of the pad type absorbent article in the unfolded state. FIG. 1 is a sectional view taken along the line AA of FIG. (A) is a sectional view taken along line BB in FIG. 1, and (b) is a sectional view taken along line CC in FIG. It is a perspective view of the pad type absorbent article deformed into a tubular shape. It is a perspective view of the pad type absorbent article deformed into a bellows shape. It is a top view which shows the front side of the pad type absorbent article in the unfolded state. It is a top view which shows the back side of the pad type absorbent article in the unfolded state. FIG. 7 is a sectional view taken along the line AA of FIG. (A) is a cross-sectional view taken along the line BB of FIG. 1, (b) is a cross-sectional view taken along the line CC of FIG. 1, and (c) is a cross-sectional view taken along the line DD of FIG. It is a perspective view of the pad type absorbent article deformed into a truncated cone shape. It is a top view which shows the front side of the pad type absorbent article in the unfolded state. It is sectional drawing corresponding to the AA cross section of FIG. It is a top view which shows the front side of the pad type absorbent article in the unfolded state.

Hereinafter, an example of the pad type absorbent article will be described with reference to the attached drawings. The dotted pattern portion in the figure shows the adhesives HM and HM1 as the joining means for joining the constituent members located on the front side and the back side thereof, and is a solid, bead, curtain, summit or spiral of the hot melt adhesive. By coating or pattern coating (transfer of hot melt adhesive by letterpress method), or by coating the fixed part of the elastic member instead or together with it on the outer peripheral surface of the elastic member such as comb gun or sure wrap coating. It is given. Examples of the hot melt adhesive include EVA type, adhesive rubber type (elastomer type), olefin type, polyester / polyamide type and the like, but they can be used without particular limitation. As the joining means for joining the constituent members, a means by welding materials such as a heat seal and an ultrasonic seal can also be used.

Further, as the non-woven fabric in the following description, a known non-woven fabric can be appropriately used depending on the site and purpose. Examples of the constituent fibers of the non-woven fabric include olefin-based fibers such as polyethylene and polypropylene, polyester-based and polyamide-based synthetic fibers (including single-component fibers and composite fibers such as core sheaths), as well as recycled rayon and cupra. Fibers, natural fibers such as cotton, and the like can be selected without particular limitation, and these can be mixed and used. In order to increase the flexibility of the non-woven fabric, it is preferable that the constituent fibers are crimped fibers. Further, even if the constituent fibers of the non-woven fabric are hydrophilic fibers (including hydrophobic fibers made hydrophilic by a hydrophilic agent), hydrophobic fibers or water-repellent fibers (water-repellent made by a water-repellent agent) It may be (including aqueous fibers). In addition, the non-woven fabric generally has a short fiber non-woven fabric, a long fiber non-woven fabric, a spunbond non-woven fabric, a melt blown non-woven fabric, a spunlace non-woven fabric, a thermal bond (air-through) non-woven fabric, and a needle punch depending on the fiber length, the sheet forming method, the fiber bonding method, and the laminated structure. Non-woven fabric, point-bonded non-woven fabric, laminated non-woven fabric (SSS non-woven fabric in which the same or similar non-woven fabric layer is laminated, SMS non-woven fabric in which different non-woven fabric layers are laminated, and a melt blown layer sandwiched between spunbond layers, SMMS non-woven fabric, etc.), etc. Any of these non-woven fabrics can be used. Laminated non-woven fabric means that it is manufactured as an integral non-woven fabric including all layers and fiber-bonding processing is performed over all layers, and a plurality of separately manufactured non-woven fabrics are attached by a joining means such as a hot melt adhesive. Does not include combined items.

1 to 4 show a pad-type absorbent article 10 that is supplementarily used together with a basic absorbent article such as a tape-type disposable diaper or a pants-type disposable diaper. The pad-type absorbent article 10 includes an integrated absorber 3, a liquid-permeable top sheet 2 that covers the surface of the absorber 3, and a liquid-permeable back sheet 1 that covers the back surface of the absorber 3. It is provided with the above, is almost flat in the unfolded state, and is absorbed from both the front and back surfaces of the absorbent article. The shape of the pad-type absorbent article 10 is not particularly limited, and may be a rectangular shape or a square shape as shown in the illustrated example, or an arbitrary shape such as a polygonal shape, a circular shape, or an elliptical shape. Further, the dimensions of each part of the pad type absorbent article 10 can be appropriately determined. For example, the dimension (length) L of the vertical LD along the long side is about 200 to 480 mm, and the dimension of the horizontal WD along the short side. The (width) W can be about 120 to 200 mm. Hereinafter, the materials and characteristic parts of each part will be described in order.

As the absorber 3, a laminated fiber of pulp fibers, an aggregate of filaments such as cellulose acetate, or a non-woven fabric is basically used, and a highly absorbent polymer is mixed and fixed as needed. .. If necessary, the absorber 3 can be wrapped with crepe paper or a non-woven fabric (not shown). Further, the shape of the absorber 3 can be an appropriate shape such as a rectangular shape. The fiber graining and the highly absorbent polymer graining in the absorber 3 can be appropriately determined, but the fiber graining is preferably about 100 to 600 g / m ² , and the fiber graining is 50 to 400 g / m. ^It is preferably about ² .

The front side of the absorber 3 is covered with the top sheet 2. A back sheet 1 is provided on the back side of the absorber 3. As the top sheet 2 and the back sheet 1, a perforated or non-perforated non-woven fabric, a perforated plastic sheet, or the like can be used.

It is also possible to use a liquid impermeable sheet as the back sheet 1, in which case absorption is performed only from the surface of the absorber 3 and absorption from the back side and permeation of the liquid to the back side do not occur. The liquid-impermeable sheet 1i is not particularly limited, but it is desirable to use a sheet having moisture permeability without impairing the water-shielding property from the viewpoint of preventing stuffiness. A typical example of this water-impervious / moisture-permeable sheet is microporous obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching it in a uniaxial or biaxial direction. It is a sex sheet. Further, as shown in FIG. 13B, the liquid-impermeable sheet 1i can be arranged on the back side of the absorber 3, and the back side of the liquid-impermeable sheet 1i can be covered with the exterior non-woven fabric 1n. In this case, the exterior non-woven fabric 1n becomes the back sheet 1.

The dot pattern portions in FIGS. 1, 12 and 14 show the joint region between the top sheet 2 and the member located on the back side thereof, and the dot pattern portions in FIGS. 2 and 8 are the back sheet 1 and the back sheet 1. The joint area with the member located on the front side is shown. In the illustrated example, the top sheet 2 and the back sheet 1 are joined to the portions protruding from the periphery of the absorber 3, and as a result, the end flap EF in which the absorber 3 does not exist on both sides in the vertical direction of the absorber 3 Is formed, and side flap SFs in which the absorber 3 does not exist are formed on both lateral sides of the absorber 3. By extending at least one of the top sheet 2 and the back sheet 1 so as to wrap around the peripheral edge of the absorber 3, a structure having no flap EF or SF in a part (for example, a side portion) or the whole of the periphery may be obtained. it can.

The pad-type absorbent article 10 can be deformed into a tubular shape, a conical shape, a truncated cone shape, or a bellows shape before use. Since it is important to retain this deformation because it leads to improvement in wearing comfort and leakage prevention, it is preferable to provide the following means for improving deformation retention. That is, in the illustrated example, an elongated tension member having a first portion 4a located at the peripheral edge of the deformation holding region T and a second portion 4b extending from the first portion 4a across the deformation holding region T. 4 is provided between the top sheet 2 and the back sheet 1. The deformation holding region T is a region for improving the deformation holding property, and can be appropriately defined. For example, the deformation holding region T can be almost the entire pad-type absorbent article 10 including the entire absorber 3, or can be only an arbitrary part. In other words, the deformation holding region T is determined by the arrangement of the tension member 4, and ranges from the first portion 4a to the portion of the second portion 4b located in the pad-type absorbent article 10 in the longitudinal direction of the tension member 4. Has a range extending over both ends of the pad-type absorbent article 10 in a direction orthogonal to the longitudinal direction of the tension member 4.

The first portion 4a of the tension member 4 is fixed to a member adjacent to both the front and back sides (or only one of them). The member to be fixed of the first portion 4a is determined by which member in the thickness direction the tension member 4 is located at the position of the first portion 4a. In the examples shown in FIGS. 3 and 4, the first portion 4a of the tension member 4 is sandwiched between the upper surface of the absorber 3 and the lower surface of the top sheet 2, and is fixed to them by the adhesive HM. On the other hand, in the example shown in FIG. 9, the first portion 4a of the tension member 4 is sandwiched between the upper surface of the back sheet 1 and the lower surface of the top sheet 2 and is fixed to them. The first portion 4a of the example shown in FIG. 13 (a) is sandwiched between the upper surface of the back sheet 1 and the lower surface of the liquid impermeable sheet 1i and fixed to them, and is shown in FIG. 13 (b). The first portion 4a of the example is sandwiched between the upper surface of the back sheet 1 and the lower surface of the liquid impermeable sheet 1i, and is fixed to them.

On the other hand, the second portion 4b of the tension member 4 has a grip portion 4d including an end portion opposite to the first portion 4a, and a free portion 4c located between the first portion 4a and the grip portion 4d. In the example shown in FIG. 1 and the like, the knob portion 4d is a portion that protrudes to the outside of the pad-type absorbent article 10. The free portion 4c is a portion that is not fixed to the members adjacent to both the front and back sides thereof. In other words, in the passing portion of the free portion 4c, adjacent members on both the front and back sides are not joined to each other, a moving passage 5 of the free portion 4c is formed, and the free portion 4c is housed in the moving passage 5. There is. The members adjacent to both the front and back sides of the second portion 4b are determined by which member in the thickness direction the tension member 4 is located at the position of the second portion 4b. That is, in the examples shown in FIGS. 3 and 4, the members adjacent to both the front and back sides of the second portion 4b are the absorber 3 and the top sheet 2 in the region where the second portion 4b of the tension member 4 and the absorber 3 overlap. In the end flap EF, the top sheet 2 and the back sheet 1 are used. On the other hand, in the example shown in FIG. 9, the members adjacent to both the front and back sides of the second portion 4b are the top sheet 2 and the back sheet 1, and in the example shown in FIG. 13 (b), the back sheet 1 and the liquid permeable sheet. It is 1i.

In the pad type absorbent article 10, the grip portion 4d of the tension member 4 is pinched to pull out the tension member 4, and the passing portion of the tension member 4 is contracted in the passing direction of the tension member 4 while being balanced in the contracted state ( When the deformation holding region T is deformed into a shape (or easily balanced), the deformation is held as compared with the one having no tension member 4. This is because the pulled-out tension member 4 is not pulled in due to the frictional force between the members that are in pressure contact with the front and back sides thereof, or because the tension member 4 is wound and sandwiched between the wound portion and the pad-type absorbent article. This is because the deformed shape is maintained as a result of maintaining the contraction force acting on the passing portion of the tension member 4 (it cannot be restored).

For example, as in the examples shown in FIGS. 3 and 4, the absorber 3 passes between the absorber 3 and the top sheet 2, and crosses the absorber 3 from one end of the vertical LD of the absorber 3 along the vertical LD. Then, when the tension member 4 extending to at least the other end of the pad type absorbent article 10 is included, when the tension member 4 is pulled out, the top sheet 2 side contracts in the vertical direction LD, so that the deformation holding region T is the top. The sheet 2 is easily deformed into a curved shape so as to be on the center of curvature (balanced shape). Therefore, as shown in FIG. 5, the pad type absorbent article 10 is suitable for being deformed into a tubular shape, and is therefore suitable for male winding. Although not shown, it goes without saying that it is also suitable for conical or truncated cone deformation. Further, for the same reason, the pad type absorbent article 10 is deformed into a bellows shape having a plurality of curved portions in the vertical LD direction such that the top sheet 2 is on the center of curvature side as shown in FIG. Also suitable for. Further, as shown in FIGS. 13 (a) and 13 (b), the absorber 3 passes vertically between the absorber 3 and the liquid permeable sheet 1i or between the liquid permeable sheet 1i and the back sheet 1. It is also a preferable form to include a tension member 4 extending from one end of the directional LD across the absorber 3 along the longitudinal LD to at least the other end of the pad-type absorbent article 10. Although not shown, the outer peripheral surface becomes the top sheet 2 when it is deformed into a tubular shape.

When the tension members 4 that cross the absorber 3 along the vertical LD are provided, as shown in FIG. 12, a plurality of tension members 4 can be provided at intervals in the lateral WD. In this case, the tension member 4 is preferably provided line-symmetrically with respect to the center line passing through the center of the lateral WD.

Further, as shown in FIGS. 7 to 10, a tension member 4 extending from one end of the vertical LD in the side flap SF to at least the other end of the vertical LD in the side flap SF along the vertical LD. When this tension member 4 is pulled out, the side flap SF having no absorber 3 contracts in the longitudinal direction LD, so that the deformation holding region T has a curved shape such that the top sheet 2 is on the center of curvature side. It is easily deformed into any of the curved shapes such that the back sheet 1 is on the center side of the curvature (balanced shape). Therefore, as shown in FIG. 11, the pad-type absorbent article 10 is suitable for being deformed into a truncated cone shape, and is therefore suitable for male winding. Although not shown, it goes without saying that it is also suitable for tubular and conical deformations. In particular, by pulling out the tension member 4, the side flap SF can be tightly squeezed in a spiral shape, so that there is an advantage that a male winding with a closed tip can be realized.

The width of the moving passage 5 (the direction orthogonal to the longitudinal direction of the tension member 4. In this case, the dimension of the lateral WD) is shown in FIGS. 7 and 8 even if it changes as in the example shown in FIG. It may be constant in the longitudinal direction as in the example. The width W1 of the outlet portion of the tension member 4 from the pad type absorbent article 10 is preferably narrow, preferably about 7 to 30 mm. When suitable for bellows-like deformation, the width W2 of the moving passage 5 is preferably 20 mm or more in most of the parts excluding the exit portion (for example, 90% or more of the free portion 4c).

The pad-type absorbent article 10 includes a tension member 4 that traverses the absorber 3 along the vertical LD of the example shown in FIGS. 1 to 4, and a tension member 4 that passes through the side flap SF shown in FIGS. 7 to 10. Both can be provided. In this case, the user can arbitrarily select and pull out the tension member 4 to deform it into a desired shape.

Highly absorbable polymers involve swelling in absorbing excrement fluid. Therefore, inhibition of expansion of the highly absorbent polymer means inhibition of absorption. However, when the pad-type absorbent article 10 is deformed into a tubular shape or the like, the absorber 3 is partially compressed. Therefore, if the liquid content of the excrement is to be absorbed as it is, the highly absorbent polymer expands (absorbs). Be hindered. On the other hand, the first portion 4a of the tension member 4 is provided at a position where it can come into contact with the liquid content of excrement, and is fixed to a member adjacent to either one side or both sides by the water-soluble adhesive HM1. It is preferable that it is done. As a result, the tension member 4 is released from the fixing due to the contact between the first portion 4a of the tension member 4 and the liquid content of the excrement. That is, the passing portion of the tension member 4 in the pad-type absorbent article 10 becomes movable with respect to the tension member 4, and the deformation holding action of the tension member 4 is weakened. As a result, the expansion force of the absorber 3 (highly absorbent polymer) allows the pad-type absorbent article 10 to expand (become loose) in a tubular shape or the like so as to allow the expansion. Therefore, it is possible to reduce the absorption inhibition when absorbing the liquid content of excrement. In this case, the position of the first portion 4a can be appropriately determined, but when the deformation holding region T is widely secured, the first portion 4a is located at a position overlapping with the absorber 3 or close to the peripheral edge of the absorber 3. It is preferable that it is provided only at the position.

The tension member 4 can be used without particular limitation as long as it is an elongated member such as a member formed by knitting natural fibers or chemical fibers or a band-shaped fiber sheet such as a non-woven fabric, and can be used in the longitudinal direction. A member that does not elastically expand and contract can be used, but an elastic member that elastically expands and contracts in the longitudinal direction is preferable. When the tension member 4 is such an elastic member, the elastic member extends as the tension member 4 is pulled out to deform the deformation holding region T, and the contraction force thereof is a passing portion of the tension member 4 in the deformation holding region T. The deformed state is elastically maintained, and the fit to the wearer's body surface is improved. Further, since the tension member 4 can be elastically stretched, the above-mentioned absorption inhibition can be reduced. As the elastic member, even if it is an assembly member in which one or a plurality of elongated rubbers are sandwiched between a pair of non-woven fabrics, a material that elastically expands and contracts by itself, such as thread-like, string-like, and strip-shaped rubbers. It may be. As such a rubber material, commonly used materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone and polyester can be used. In particular, when the tension member 4 is an elastic material itself such as rubber, the frictional force on the surface becomes strong and the tension member 4 once pulled out is less likely to be pulled in, which is preferable.

When the pad-type absorbent article 10 is manufactured, the portion that becomes the individual pad-type absorbent article 10 becomes the individual pad-type absorbent article 10 adjacent to the MD direction after forming a continuous band that repeats in the MD direction. The method of cutting at the boundary of is common. With such a manufacturing method, it is not impossible, but not easy, for the tension member 4 to protrude from the peripheral edge of the product. On the other hand, as in the example shown in FIG. 14, when the end flap EF is provided with the separating portion 11 which is separably connected via the perforation 11m, and the grip portion 4d of the tension member 4 is fixed to this separating portion. Since the tension member 4 does not have to protrude from the peripheral edge of the product, not only the manufacturing is facilitated, but also the grip portion 4d of the tension member 4 is easily gripped. Although the illustrated example is an example in which the separating portion is provided in the end flap EF, when the tension member 4 extends in the lateral direction WD, the separating portion can be provided in the side flap SF. Further, in the illustrated example, the grip portion 4d of the tension member 4 is sandwiched between the top sheet 2 and the back sheet 1 of the separation portion and fixed to them by the adhesive HM, but other fixing means may be used. It can also be used.

For similar manufacturing reasons, the first portion 4a may not include (or may be separated from) the ends of the tension member 4 as in the illustrated example.

<Explanation of terms in the specification>
The following terms in the specification have the following meanings unless otherwise specified in the specification.

-The "front-back direction" means the direction indicated by the symbol LD in the figure (vertical direction), and the "width direction" means the direction indicated by WD (horizontal direction) in the figure, and the front-back direction and the width direction. Are orthogonal.

-The "front side" means the one closer to the wearer's skin when worn, and the "back side" means the one farther from the wearer's skin when worn.

-The "front surface" means the surface of the member that is closer to the wearer's skin when worn, and the "back surface" means the surface of the member that is farther from the wearer's skin when worn.

-"Area ratio" means the ratio of the target part to the unit area, and is expressed as a percentage by dividing the total area of the target part (for example, a hole) in the target area (for example, cover non-woven fabric) by the area of the target area. Is. In a form in which a large number of target portions are provided at intervals, it is desirable to set the target area to a size that includes 10 or more target portions and obtain the area ratio. For example, the area ratio of the holes can be measured by the following procedure using, for example, the trade name VHX-1000 manufactured by KEYENCE, and the measurement conditions are set to 20 times.
(1) Set it on a 20x lens and adjust the focus. Adjust the position of the non-woven fabric so that there are 4x6 holes.
(2) Specify the brightness of the hole area and measure the hole area.
(3) Click the color extraction of "Area measurement" in "Measurement / Comment". Click on the hole.
(4) Click "Batch measurement", check "Display measurement result window", and save as CSV data.

-"Elongation rate" means a value when the natural length is 100%. For example, an elongation rate of 200% is synonymous with an elongation ratio of 2 times.

-"Gel strength" is measured as follows. Artificial urine (urea: 2 wt%, sodium chloride: 0.8 wt%, calcium chloride dihydrate: 0.03 wt%, magnesium sulfate heptahydrate: 0.08 wt%, and ion-exchanged water: 97.09 wt% Add 1.0 g of highly absorbent polymer to 49.0 g (mixed product) and stir with a stirrer. The produced gel is left in a constant temperature and humidity chamber at 40 ° C. × 60% RH for 3 hours, then returned to room temperature, and the gel strength is measured with a card meter (Curdmeter-MAX ME-500 manufactured by I. techno Engineering).

-"Grandming" is measured as follows. After pre-drying the sample or test piece, leave it in a test room or device under standard conditions (test location: temperature 23 ± 1 ° C., relative humidity 50 ± 2%) to bring it to a constant weight. Pre-drying refers to constant weight of a sample or test piece in an environment at a temperature of 100 ° C. It is not necessary to pre-dry the fibers having an official moisture content of 0.0%. A sample having a size of 100 mm × 100 mm is cut out from the test piece in a constant weight state using a sampling template (100 mm × 100 mm). The weight of the sample is measured and multiplied by 100 to calculate the weight per square meter, which is used as the index.

-The "thickness" is automatically measured using an automatic thickness measuring device (KES-G5 handy compression measurement program) under the conditions of a load of 0.098 N / cm ² and a pressurized area of 2 cm ² .

-The water absorption amount is measured by JIS K7223-1996 "Water absorption amount test method for highly water-absorbent resin".

-The water absorption rate shall be the "time to the end point" when JIS K7224-1996 "Water absorption rate test method for superabsorbent polymer" was performed using 2 g of superabsorbent polymer and 50 g of physiological saline. ..

-"Unfolded state" means a state in which the unfolded state is flat without shrinkage or slack.

-Unless otherwise specified, the dimensions of each part mean the dimensions in the unfolded state, not in the natural length state.

-If there is no description about the environmental conditions in the test or measurement, the test or measurement shall be performed in a test room or equipment under standard conditions (test location: temperature 23 ± 1 ° C, relative humidity 50 ± 2%). To do.

The present invention can be used for pad-type absorbent articles that are used by being deformed into a tubular shape or the like.

EF ... End flap, HM ... Adhesive, LD ... Vertical direction, SF ... Side flap, T ... Deformation holding area, WD ... Horizontal direction, 1 ... Back sheet, 1i ... Liquid impermeable sheet, 1n ... Exterior non-woven fabric, 2 ... top sheet, 3 ... absorber, 4 ... tension member, 4a ... first part, 4b ... second part, 4c ... free part, 4d ... picking part, 5 ... moving passage, 10 ... pad type absorbent article, 11 … Separation part.

Claims (7)

In a pad-type absorbent article comprising an absorber, a liquid-permeable top sheet covering the front side of the absorber, and a back sheet covering the back side of the absorber.
It has an elongated tension member provided between the top sheet and the back sheet.
The tension member has a first portion located at the peripheral edge of the deformation holding region and a second portion extending from the first portion across the deformation holding region.
The first portion is fixed to a member adjacent to either one side or both sides thereof.
The second portion has a knob portion including an end portion opposite to the first portion and a free portion located between the first portion and the knob portion.
The free portion is a portion that is not fixed to members adjacent to both the front and back sides thereof.
The knob is a portion of the pad-type absorbent article that projects outward or is fixed to a portion that is separable from the surroundings.
A pad-type absorbent article characterized by that. In the unfolded state, it has a rectangular shape with a long side along the vertical direction and a short side along the horizontal direction.
As the tension member, at least other than the pad type absorbent article, passing between the absorber and the top sheet, crossing the absorber in the vertical direction from one end in the vertical direction of the absorber. Includes tension members, extending to the end,
The pad type absorbent article according to claim 1. In the unfolded state, it has a rectangular shape with a long side along the vertical direction and a short side along the horizontal direction.
It has side flaps extending laterally on both sides of the absorber.
The tension member includes a tension member that extends from one end in the longitudinal direction of the side flap to at least the other end of the side flap in the longitudinal direction along the longitudinal direction.
The pad-type absorbent article according to claim 1 or 2. The absorber contains a highly absorbent polymer and contains
The first portion is fixed to a member adjacent to either one of the front and back sides or both sides thereof via a water-soluble adhesive, and is provided at a position where it can come into contact with the liquid content of excrement.
The pad-type absorbent article according to any one of claims 1 to 3. The first portion is provided only at a position overlapping the absorber or close to the periphery of the absorber.
The pad type absorbent article according to claim 4. The tension member is an elastic member that elastically expands and contracts in the longitudinal direction.
The pad-type absorbent article according to any one of claims 1 to 5. It has a flap that extends outward from the periphery of the absorber.
The flap has a separablely connected separation portion through a perforation.
The knob portion of the second portion is fixed to the separation portion.
The pad-type absorbent article according to any one of claims 1 to 6.

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