JP4343747B2 - Sanitary shorts - Google Patents

Description

  The present invention relates to a sanitary shorts to which an absorbent article such as a sanitary napkin or a panty liner is fixed and worn, and relates to a sanitary shorts that eliminates a gap between the body and the napkin, and particularly eliminates a back leak. .

  Conventionally, sanitary shorts have been proposed in which absorbent articles such as sanitary napkins and panty liners are fixed and worn. The sanitary shorts are different from ordinary shorts in that a waterproof cloth is provided on the inner surface side from the crotch to the hip side so that dirt on the attached body fluid can be easily removed. By providing the waterproof cloth, body fluid does not permeate to the outside, but a gap is likely to be formed between the body and the napkin at the buttocks, and later leakage particularly at bedtime.

  In order to solve this problem, in Patent Document 1 below, in order to eliminate the gap between the body and the napkin, the napkin is brought into close contact with the body in the mounted state at the position close to the crotch or in the back of the crotch. A sanitary short has been proposed in which a three-dimensional piece having a three-dimensional shape to be deformed is provided, and an elastic member extending in the front-rear direction is attached to a position where the three-dimensional piece is attached.

  In Patent Document 2 below, a sanitary short is proposed in which a napkin is deformed and brought into close contact with the body by disposing a belt-like non-stretchable member along the longitudinal center line at the crotch part.

Further, Patent Document 3 below proposes a sanitary short in which an elastic cloth is gathered and sewn along the longitudinal center line in the back body part.
JP 2003-171802 A JP 2003-190214 A JP-A-9-111503

  However, in the case of the sanitary shorts described in Patent Document 1, it is possible to bring the napkin into close contact with the body locally by providing a three-dimensional piece, but it is impossible to completely eliminate the gap between the body and the napkin. Difficult to prevent body fluid leaks, especially at bedtime, and because it requires a fairly strong tightening force to press the napkin to the body side by the elastic member, the wearing feeling is impaired, There were problems such as poor circulation.

  Next, in the case of the sanitary shorts described in Patent Document 2, the non-stretchable member is intentionally disposed along the vertical direction, and the napkin is brought into close contact with the local portion by the lifting force due to this non-stretchability. Since the movement of the body is largely restricted by the non-stretchable member, there is a problem that the wearing feeling is bad and uncomfortable.

  In the case of the sanitary shorts described in the above-mentioned Patent Document 3, a considerably strong tightening force is required to press the napkin against the body side with the elastic cloth, so that the wearing feeling is impaired and poor circulation is caused. There was a problem.

  Therefore, the main problem of the present invention is that the use of a sanitary device that effectively prevents rear leakage by firmly attaching the napkin to the recess from the local part to the buttocks without using an elastic member or elastic cloth. It is to provide shorts.

In order to solve the above-mentioned problem, the present invention according to claim 1, comprising a front body, a back body, and a crotch portion connecting both of them, in a sanitary shorts in which an absorbent article is fixed and worn,
In the range from the crotch to the approximate center of the back body, along the longitudinal center line, the taper has a substantially uniform width from the crotch to the buttocks, and gradually narrows from the midpoint. , polyethylene foam, melamine foam or synthetic sponge selected from foam, polyurethane sponge, PVA sponge, high compressibility composed of sponge selected from natural sponge material, cross-sectional shape which is raised to a cushion material having a resilience A sanitary short is provided, wherein the elastic pad is stretched, sewn to the sanitary shorts in a stretched state, covered with a covering cloth, and its periphery is sewn and fixed. .

  As a second aspect of the present invention, the elastic pad has a trapezoidal cross-section, a substantially triangular cross-section, an arc-shaped cross-section, a concave cross-section in which a gentle concave portion is formed in the central portion, and a gentle convex in the central portion. 2. A sanitary short according to claim 1 provided as any one or a combination of convex cross-sections with shaped portions.

  As described above in detail, according to the present invention, it is possible to effectively prevent the rear leakage by firmly attaching the napkin to the recess from the local portion to the heel portion without using an elastic member or an elastic cloth. It becomes.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a sanitary short 1 according to the present invention, FIG. 2 is a developed view thereof, and a view taken along the line III-III in FIG. 2 of FIG.

  The sanitary shorts 1 is one in which an absorbent article such as a sanitary napkin or a panty liner is fixed and worn, and includes a front body 2, a back body 3, and a crotch 4 that connects the two. is there. The front body 2, the back body 3, and the crotch part 4 are made of a material that has a good feel and breathability, includes elastomer fibers, and has a certain degree of stretchability in the longitudinal and lateral directions, such as cotton cloth. Is desirable.

  The crotch portion 4 is sewn with a waterproof cloth 5 superimposed on the inner surface side of an outer cloth made of the same material as the front body 2 and the back body 3. This waterproof cloth 5 has the same shape as the crotch portion, is sewn at each of the side edge portion and the front and rear portions, and is waterproofed on the non-skin surface side (hidden inner surface side), for example, silicon-based or fluorine-based Waterproofing is performed by applying a water repellent or by laminating water-repellent sheets such as polyfluorinated ethylene, polyurethane, and polyethylene. In recent years, moisture permeable waterproof cloths in which a polyethylene amino acid urethane polymer, a polyurethane polymer, a polytetrafluoroethylene polymer is coated or laminated on a cloth are also provided. As the waterproof cloth 5 of the sanitary shorts 1, a cloth having moisture permeability is preferably used from the viewpoint of eliminating stuffiness as much as possible.

  In the sanitary shorts 1, as shown in FIGS. 1 to 3, the ridges are elongated along the longitudinal center line CL over the range from the crotch 4 to the approximate center of the back body 3. An elastic pad 6 having a cross-sectional shape is provided. By providing the elastic pad 6 over the range from the crotch part 4 to the approximate center of the back body 3, the napkin can be brought into close contact with the recess from the local part to the buttocks part, and between the napkin and the body. This eliminates the gap and effectively prevents back leakage. In addition, even if there is no strong pressing force due to the expansion and contraction force of elastic members and elastic cloth, the napkin can be brought into close contact with the body, so there is no feeling of tightening, and the elastic pad has flexibility (elasticity) and has a body shape. Since it deforms along, it is possible to improve the feeling of wearing. Furthermore, since the elastic pad 6 is rich in cushioning properties, the napkin can follow the movement of the body, and the napkin is fixed in close contact with the skin, so that the absorbent body can be prevented from twisting.

As shown in FIG. 2, it is desirable that the elastic pad 6 has a substantially equal width from the crotch part 4 to the buttock side and a tapered shape in which the width is gradually narrowed from the middle point. In this case, the elastic pad 6 has a thickness t of 3 to 15 mm at the crotch part 4, a total length L of 190 to 210 mm, a width dimension B of the uniform width part 6A of 10 to 50 mm, and a longitudinal dimension of the uniform width part 6A. L ₁ is 140～170Mm, tapered portion longitudinal dimension _{L 2} of 6B is desirably to 40 to 50 mm. When the thickness t of the crotch part 4 is less than 3 mm, the napkin cannot be brought into close contact with the body and a gap is generated. When it exceeds 15 mm, the uncomfortable feeling at the time of wearing becomes remarkable. When the total length L is less than 190 mm, the napkin cannot be brought into close contact from the local part to the heel part, and the rear leakage cannot be effectively prevented. When it exceeds 210 mm, the uncomfortable feeling at the time of wearing becomes remarkable. If the width of the equal width portion 6A is less than 10 mm, a gap may be formed between the napkin and the body, and if it exceeds 50 mm, the feeling of discomfort at the time of wearing becomes noticeable.

  Examples of the material for forming the elastic pad 6 include highly compressible materials such as foam materials such as soft urethane foam, polyethylene foam and melamine foam, and various sponge materials such as synthetic rubber sponge, polyurethane sponge, PVA sponge, and natural sponge. Various cushioning materials 7 having a restoring property, and fibers 8 such as rayon and cotton can be preferably used.

  As a manufacturing method when the cushion material 7 is used, for example, as shown in the figure, the cushion material 7 is sewn on the sanitary shorts 1, covered with a covering cloth 9, and the periphery thereof is sewn and fixed. In order to give a certain amount of stretching force, the sanitary shorts 1 may be sewn in the stretched state, covered with the covering cloth 9, and the periphery thereof may be sewn and fixed. It is desirable that the elongation rate is in a state of being expanded by 5 to 300% of the original length. If the elongation rate is less than 5%, the effect of elongation cannot be obtained. Further, when the elongation rate exceeds 300%, the elastic pad itself may break when it is stretched.

  As a manufacturing method in the case of using the fibers 8, for example, the covering cloth 9 is arranged on the sanitary shorts 1, the periphery is sewn except for a part, the fibers 8 are packed inside, and the opening is sewn. It is desirable to prevent the fiber 8 from shifting by quilting. Further, after filling the inside of the bag-like material, the opening portion is stitched, and a quilting process to prevent the fiber from shifting is sewn and fixed to the sanitary shorts 1. . The quilting process is a sewing technique in which cotton or the like is sandwiched between fabrics, and the cotton is sewn together for decoration while stopping so that the cotton does not slip inside. The pattern can be a lattice pattern (vertical lattice, rhombus, etc.), a single circle, an ellipse, or a combination thereof if the displacement of the packed fibers 8 can be prevented. From the viewpoint of preventing the fiber 8 from shifting, it is preferable to use a lattice pattern or a pattern including a lattice pattern.

  In addition to the trapezoidal cross section shown in FIG. 3, the elastic pad 6 has a substantially triangular cross section (FIG. 4A) and an arc cross section (FIG. 4). (B)), a concave cross section with a gentle concave portion formed in the center (FIG. 4 (C)), and a convex cross section with a gentle convex portion formed in the central portion (FIG. 4 (D)). Any or a combination is desirable. When the cross-sectional shape is a trapezoidal cross-section and an arc-shaped cross-section, the napkin can be intimately adhered to the body, and when the cross-section is a substantially triangular cross-section, it can be matched with the recess shape of the buttocks. It is possible to eliminate the gap.

  Further, in the case of a concave cross section in which a gentle concave portion is formed at the center portion, as shown in FIG. 5, the napkin has a middle / high absorber portion having a middle / high portion or a fit emboss of a napkin having a fit emboss. As shown in the figure, in the case of a napkin N having solid gathers on both sides of the surface side, the napkin is displaced and the absorbent body is prevented from slipping by the enclosed portion being fitted into a gentle recess. The upright portion 11 of the three-dimensional gather 10 can be opened so as to expand sideways. In the case of a convex cross section with a gentle convex part formed in the center part, even if the napkin does not have a middle-high part on the surface, a napkin having a middle-high part to bend the napkin into a hex shape It is possible to have the same effect.

  When these cross-sectional shapes are combined, for example, the equal width portion 6A of the elastic pad 6 has a trapezoidal cross-section, a convex cross-section or a concave cross-section, and the tapered portion 6B of the elastic pad 6 has a substantially triangular cross-section or arc shape. As in the cross section, it is preferable to combine each part so that the adhesion between the napkin and the body is increased.

It is a perspective view of sanitary shorts 1 concerning the present invention. It is the development view. It is the III-III arrow directional view of FIG. FIG. 4 is a diagram illustrating an example of a cross-sectional shape of an elastic pad 6. It is sectional drawing at the time of fixing a napkin to the elastic pad 6 of the concave cross section of FIG.4 (C).

  DESCRIPTION OF SYMBOLS 1 ... Sanitary shorts, 2 ... Front body, 3 ... Back body, 4 ... Crotch part, 5 ... Waterproof cloth, 6 ... Elastic pad, 7 ... Cushion material, 8 ... Textile, 9 ... Cover cloth, N ... Napkin

Claims (2)

In the sanitary shorts which consists of the front body, the back body and the crotch part connecting both of these, the absorbent article is fixed and worn,
In the range from the crotch to the approximate center of the back body, along the longitudinal center line, the taper has a substantially uniform width from the crotch to the buttocks, and gradually narrows from the midpoint. , polyethylene foam, melamine foam or synthetic sponge selected from foam, polyurethane sponge, PVA sponge, high compressibility composed of sponge selected from natural sponge material, cross-sectional shape which is raised to a cushion material having a resilience A sanitary short comprising: an elastic pad comprising: an elastic pad that is stretched and sewn to the sanitary short, covered with a covering cloth, and the periphery thereof is sewn and fixed.   The cross-sectional shape of the elastic pad is a trapezoidal cross-section, a substantially triangular cross-section, an arc-shaped cross-section, a concave cross-section in which a gentle concave portion is formed in the central portion, and a convex cross-section in which a gentle convex portion is formed in the central portion. The sanitary short according to claim 1, which is either or a combination.

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