JP4746833B2 - Women's incontinence pad - Google Patents

Description

  The present invention provides a liquid-impermeable back sheet, an absorber, and a liquid-permeable top sheet in this order from the bottom, and heat-bonds the peripheral portion and embosses the use surface on the top sheet side. Relates to the female incontinence pad formed.

  A conventional female incontinence pad includes a liquid-impermeable back sheet, an absorbent body mainly composed of pulp fibers and a superabsorbent polymer, and a liquid-permeable top sheet. And the embossing is formed in the whole surface by the fixed density on the use surface which is the top sheet side (for example, patent document 1). This embossing process forms irregularities on the surface of the top sheet so that urine does not leak from the female incontinence pad, and dampens urine released at once, or guides it in the front-rear direction of the female incontinence pad. By sinking and absorbing the entire surface, the intention is to make the most effective use of the absorbent body of the female incontinence pad.

Japanese Patent No. 3175611

However, female incontinence pads are intended to absorb urine and have a large amount of absorbent polymer scattered in the pulp and when pressure is applied to form embossing on the female incontinence pad during manufacture. In addition, there is a problem that the embossed portion is broken or the embossed portion is broken when the absorbing polymer swells by absorbing urine.
Accordingly, an object of the present invention is to provide a female incontinence pad in which an embossed portion cannot be broken.

For this reason, the invention according to claim 1 is a liquid-impermeable backsheet;
An absorbent body interspersed with a polymer having high absorbency;
In the incontinence pad for women in which the liquid-permeable top sheet is provided in this order from the bottom, the peripheral edge is thermally fused, and the embossing is formed on the use surface on the top sheet side,
The embossing is formed discontinuously over the inner periphery of the peripheral edge,
The formed embossing is a substantially rectangular shape composed of a long side portion and a short side portion ,
The long side portion is formed along substantially the entire region in the longitudinal direction of the three-dimensional gather provided over the entire region of both sides in the longitudinal direction of the top sheet, and embossed at a portion that divides the long side portion and the short side portion Non-forming part is provided,
The length of the non-embossed portion is 2 to 10 mm, and there are four symmetrical places.

  Therefore, according to the invention of claim 1, since the embossing is discontinuously formed over the inner periphery of the peripheral portion of the female incontinence pad, a pressure is applied to form the embossing on the female incontinence pad during manufacture. Even when added, the embossed part is not torn. In addition, the embossed portion is not broken when the absorbing polymer swells by absorbing urine.

Further , according to the invention of claim 1, since the embossing formed over the inner periphery of the peripheral portion is substantially rectangular and there are four non-embossed portions symmetrically, urine is contained in the female incontinence pad. Even when pressure is applied to form embossing on the female incontinence pad at the time of manufacture while maintaining the purpose of embossing so as not to leak to the outside, the embossed portion does not break.

  In addition, the embossed portion is not broken when the absorbing polymer swells by absorbing urine.

Further , according to the invention of claim 1 , since the length of the non-embossed portion is 2 to 10 mm, while maintaining the embossing purpose of preventing urine from leaking out of the female incontinence pad, Even when pressure is applied to form an embossing on a female incontinence pad, the embossed portion does not tear. In addition, the embossed portion is not broken when the absorbing polymer swells by absorbing urine.

According to a second aspect of the present invention, in the female incontinence pad according to the first aspect, a liquid-permeable second sheet is provided between the top sheet and the absorber.

Therefore, according to the invention of claim 2 , since the liquid-permeable second sheet is provided between the top sheet and the absorber, the absorption rate can be increased.

  According to the invention described in claim 1, since the embossing is formed discontinuously over the inner periphery of the peripheral portion of the female incontinence pad, pressure is applied to form the embossing on the female incontinence pad during manufacture. Even when added, the embossed part is not torn. In addition, even when urine is absorbed and the absorbent polymer swells, the embossed portion is not broken, and a female incontinence pad that does not break the embossed portion can be provided.

According to the first aspect of the present invention, since the embossing formed over the inner periphery of the peripheral portion is substantially rectangular and there are four non-embossed portions symmetrically, urine is incontinence for women. The embossed portion can be prevented from being torn even when pressure is applied to form the embossing on the female incontinence pad at the time of manufacture while maintaining the embossing purpose of not leaking outside the pad. In addition, even when the absorbent polymer swells by absorbing urine, the embossed portion is prevented from being broken and can be used comfortably by the wearer.

Moreover, according to the invention of claim 1 , since the length of the non-embossed portion is 2 to 10 mm, while maintaining the embossing purpose of preventing urine from leaking out of the female incontinence pad, Even when pressure is applied to form an embossing on a female incontinence pad during manufacturing, the embossed portion can be prevented from being broken. In addition, even when urine is absorbed and the absorbent polymer swells, the embossed portion can be prevented from being broken and the occurrence of defective products can be suppressed.

According to the second aspect of the invention, since the liquid-permeable second sheet is provided between the top sheet and the absorber, the absorption rate can be increased. In addition, when a second sheet having liquid diffusibility is used, urine is diffused throughout the absorber, and the absorber can be used uniformly.

  FIG. 1 is a plan view of a female incontinence pad according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA, and FIG. 3 is a state in which the female incontinence pad shown in FIG. It is a perspective view shown.

  A female incontinence pad 1 of the embodiment shown in FIG. 1 includes a liquid-impermeable back sheet 2, an absorbent body 3 interspersed with pulp fibers and a polymer having high absorbency, and a liquid-permeable top sheet 4. Are provided in this order from the bottom. The periphery of the absorbent body 3 is wrapped with tissue paper 5. Further, a liquid permeable and liquid diffusable second sheet 8 is provided on the top sheet 1 side of the absorber 3. And the embossing E is formed toward the absorber 3 from the top sheet 1 which is a use surface side. In addition, the depth D of the embossed part of this embossing E is 0.5 to 5.0 mm and is provided in a hatched shape. The shape of the embossing E is not limited to the hatched shape as in this example.

  Further, three-dimensional gathers 6 are provided on both sides of the top sheet 1. The three-dimensional gather 6 is formed by folding back a gather sheet 6a made of a water-repellent nonwoven fabric and bonding three elastic members 7 such as thread rubber with a hot melt adhesive or the like under extension. Therefore, in a state where the female incontinence pad 1 is expanded, the female incontinence pad 1 as a whole is drawn to the use surface side by the elastic member 7 so as to draw an arc. In the peripheral part M, the gather sheet 6a and the back sheet 2 are heat-sealed and embossed. On the other hand, the top sheet 4 is folded under the absorber 3 and bonded with a hot melt adhesive or the like. Further, an adhesive tape (not shown) for attaching and fixing the female incontinence pad 1 to shorts or the like is provided on the back side of the back sheet 2 with a release paper.

  By the way, in the female incontinence pad 1 of this invention, the embossing E formed over the inner periphery of the peripheral part M is a substantially rectangular shape, and four embossing Ea-Ed is separated by the space | interval (non-formation part) d. Has been. And four intervals d of the four embossing Ea-Ed are formed symmetrically. In other words, there is a distance d between each embossing E not formed. In addition, it is preferable that the length of this space | interval d shall be 2-10 mm, and the space | interval d is 4 mm more suitably. Of course, it is not limited to making all the intervals of four embossing Ea-Ed the same.

  In addition, as another example of the shape of embossing E, what is shown to FIG. 4 (a), (b) may be used.

  The top sheet 4 is a liquid-permeable non-woven fabric, woven fabric, porous plastic film, etc., and its constituent fibers are single or long fibers such as polypropylene, polyethylene, polyester, nylon, or polyester, polypropylene, polyethylene, nylon, etc. In particular, composite fibers of polyester / polyester, polyester / polyethylene and polypropylene / polyethylene are preferable from the viewpoint of strength, but are not particularly limited.

  The back sheet 2 is, for example, a liquid impermeable film such as polyethylene, a material obtained by bonding a liquid impermeable film and a nonwoven fabric or a woven fabric. More preferably, in order to prevent stuffiness, if a composite sheet in which a nonwoven fabric or a woven fabric is bonded to the outside of a polyethylene film or the like provided with a large number of micropores that do not allow liquid to permeate, moisture permeability, touch, etc. Can be made comfortable.

  The absorber 3 is for absorbing and holding liquid excreta, and is made of cotton-like pulp, a superabsorbent polymer (hereinafter abbreviated as “SAP”), a hydrophilic sheet, and the like. The absorbent body 14 used in the present invention is made of a known absorbent material that is usually used in absorbent articles such as conventional pants-type paper diapers.

  That is, a single layer or multilayer mat in which absorbent fibers such as cotton-like pulp and rayon and SAP are mixed, or a fabric in which SAP is uniformly disposed between layers of absorbent fibers is a tissue that is a hydrophilic sheet. What was formed by wrapping with paper 15 can be used. Moreover, you may heat-press by mixing 3-60 weight% of heat-fusible substances with respect to cotton-like pulp as needed. Alternatively, only SAP may be wrapped with a hydrophilic sheet.

As the cotton-like pulp, a chemical pulp sheet or a mechanical pulp sheet defibrated by a pulverizer is used. Pulp raw materials are not limited to conifers, but hardwoods, straw, bamboo and kenaf are also applicable. In addition, waste paper pulp may be used. The amount of use of the cotton-like pulp varies depending on the intended absorber, for example, whether it is used singly, or a plurality of layers are laminated, or another absorbent is used in combination. 400 g / m ² .

  Examples of SAP include starch, cellulose, and synthetic polymer. That is, starch-acrylic acid (salt) graft copolymer, saponified product of starch-ethyl acrylate graft copolymer, saponified product of starch-methyl methacrylate graft copolymer, saponified product of starch-acrylonitrile graft copolymer Saponified starch-acrylamide graft copolymer, acrylic acid (salt) polymer, polyethylene oxide cross-linked with acrylic acid, cross-linked product of sodium carboxymethyl cellulose, cross-linked product of polyvinyl alcohol-maleic anhydride reaction product, etc. Can be used.

  The second sheet 8 is a liquid-permeable non-woven fabric, woven fabric, porous plastic film, etc., similar to the top sheet 1, and the constituent fibers thereof are single and long fibers such as polypropylene, polyethylene, polyester, nylon, or polyester, It is a composite fiber composed of two or more components such as polypropylene, polyethylene, nylon and the like, and polyester / polyester, polyester / polyethylene, and polypropylene / polyethylene composite fibers are particularly preferred in terms of strength, but are not particularly limited. .

  In order to use the female incontinence pad 1 of this embodiment, after peeling off the release paper of the adhesive tape provided on the back side of the back sheet 2, as shown in FIG. Adhere to the position. Then, the three-dimensional gather 6 stands up. Then, the wearer puts the left and right legs from the waist part SW of the shorts S, puts out the right leg from the right leg part LR, and puts the left leg from the left leg part LL in the same manner as when wearing normal shorts. Pull out the shorts S to the crotch. Then, the three-dimensional gather 6 fits in a standing state at the base of the left and right legs of the wearer, and urine leakage is less likely to occur.

The present invention is not limited to the above-described example, and the embossing Ea, Eb, and Ec are discontinuous as shown in FIGS. 4A and 4B by changing the embossing E pattern. The portion may be a non-formed portion.
Further, as shown in FIGS. 5 (a) and 5 (b), there may be four non-formed portions symmetrically at intervals d in the embossing Ea and Ed formed over the inner periphery of the peripheral edge portion M. As shown in FIG. 5 (c), the embossed portions Ea, Ed formed over the inner periphery of the peripheral edge portion M and the embossed portions Ed may have four non-formed portions symmetrically with a distance d. 4 and 5 are used as reference examples.
In the non-formed portion, it is not necessary to make all the intervals d the same, and it is not always necessary to be symmetrical.

  Further, in the above example, the top sheet 4 is wound and fixed between the back sheet 2 and the back side of the absorber 3, but the present invention is not limited to this, and as shown in FIG. It may be fixed to 6a with a hot melt adhesive or the like.

It is a top view which shows an example of the female incontinence pad of this invention. It is A arrow sectional drawing of FIG. It is a perspective view which shows a mode that the incontinence pad for women of this invention was mounted | worn with shorts. (A), (b) is a top view which shows another example of the female incontinence pad of FIG. (A), (b), (c) is a top view which shows another example of the female incontinence pad of FIG. It is sectional drawing which shows another example of the female incontinence pad of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Incontinence pad for women 2 Back sheet 3 Absorber 4 Top sheet 5 Tissue paper 6 Solid gather 6a Gather sheet 7 Elastic member E, Ea, Eb, Ec, Ed Embossing M Peripheral part S Shorts SM Inseam LL Left leg part LR Right leg area

Claims (2)

A liquid-impermeable backsheet;
An absorbent body interspersed with a polymer having high absorbency;
In the incontinence pad for women in which the liquid-permeable top sheet is provided in this order from the bottom, the peripheral edge is thermally fused, and the embossing is formed on the use surface on the top sheet side,
The embossing is formed discontinuously over the inner periphery of the peripheral edge,
The formed embossing is a substantially rectangular shape composed of a long side portion and a short side portion ,
The long side portion is formed along substantially the entire region in the longitudinal direction of the three-dimensional gather provided over the entire region of both sides in the longitudinal direction of the top sheet, and embossed at a portion that divides the long side portion and the short side portion Non-forming part is provided,
An incontinence pad for women, wherein the length of the non-embossed portion is 2 to 10 mm and there are four symmetrical places.   The incontinence pad for women according to claim 1, further comprising a liquid-permeable second sheet between the top sheet and the absorber.

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