JPS59601B2 - Diapers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to diapers, and is particularly suitable for implementation in disposable diapers.

SUMMARY OF THE INVENTION An object of the present invention is to provide a diaper that conforms well to the wearer's crotch region, prevents leakage of excretory fluid, and prevents excrement from moving within the diaper.

The diaper of the present invention has a front waist end, a rear waist end, a crotch portion between the waist ends, both side edges extending between the waist ends, and a surface that contacts the wearer. From one end that is adjacent to the front-back center line on one side of the front-back center line extending between both waist ends and located on the front waist end side, approximately the distance between the front-back center line and the side edge. A portion of the surface along a line extending at the center and intersecting the transverse center line between the two waist ends to the other end located on the rear waist end side is defined as the front-back center line. It is characterized in that it is fixed to a part of the surface that is symmetrical with respect to the surface. In a preferred embodiment of the present invention, a portion of the surface is fixed with an adhesive, the one line is a circular arc, and the angle between the tangent to the arc and the longitudinal centerline is the longitudinal centerline of the arc. The part closest to is the smallest (,.

Embodiments of the present invention will be described in detail below with reference to the drawings.

The disposable diaper 10 consists of an absorbent body 12 and a permeable backing fabric 14 (eg, a plastic sheet).

The lining fabric 14 has folds 1 defining side edges 20, 22 of the diaper.
6 and 18 are stacked on the upper surface of the absorbent main body 12. The flaps 16, 18 are secured to the absorbent body 12 (e.g., by heat sealing) and are attached to the waist end (longitudinal end) 24 of the front layer.
, 26 is fixed on the lining fabric flap. A conventional tape 28 may be provided for securing the diaper to the infant. Anteroposterior centerline A runs from the front waist end 24 through the central crotch to the rear waist end 26, but is equidistant from the side edges 20,22. The transverse centerline B is perpendicular to the anteroposterior centerline A and equidistant from the waist ends 24, 26 of the front layer. According to the present invention, a portion of the surface of the absorbent body 12 (typically from a non-woven liner overlying the absorbent material) is located at a symmetrical position opposite the longitudinal centerline A. to a part of the surface of the absorbent body.

In a preferred form, portions of these surfaces extend from a first location 32 adjacent the anteroposterior centerline A and toward the anterior lumbar end of the transverse centerline B to a first location from both the anteroposterior centerline A and the anterior lumbar end 24. , including an arc extending to a more distant second position 34. In FIG. 1, the portion of the surface to the right of the longitudinal centerline A is indicated by an arc 36 extending between positions 32 and 34 and intersecting the transverse centerline B. Location 34 is approximately equidistant from longitudinal centerline A and side edge 22 . In a preferred form of the invention, arc 36 may be a line of adhesive applied to the surface of absorbent body 12. When the diaper is folded along the longitudinal center line A while the adhesive remains tacky, the surface coated with the adhesive is fixed to the surface at a symmetrical position on the opposite side of the longitudinal center line A. In the example shown in FIG.
is a quarter circle that touches the center line A in the longitudinal direction at the above position (ie, position 32). FIG. 2 shows the shape of the diaper 10 when it is unfolded to be applied to an infant.

The adhesive line 36 is located on the longitudinal centerline A, and the diaper cannot be made flat. Accordingly, the absorbent material gathers in the crotch of the diaper, thereby increasing its ability to absorb liquid. In addition, the diaper has a tapered shape at the crotch, which allows the diaper to better fit the infant's body. Additionally, a pocket 38 may be created at the rear of the diaper to restrict the movement of exudates within the diaper.

[Brief explanation of drawings]

FIG. 1 is a plan view of a disposable diaper constructed according to the present invention, showing the arrangement of stages during manufacturing. Figure 2 is a plan view of the completed diaper. A: Front-rear center line, B: Transverse center line, 10: Diaper, 12: Absorbent main body, 14: Lining fabric, 20, 22: Side edges, 24, 26: Waist end, 30: Crotch, 36: line (part of the diaper surface).

Claims (1)

[Claims] 1 a front waist end 24, a rear waist end 26, a crotch section 30 between the waist ends, both side edges 20 extending between the waist ends,
22 and a diaper having a surface that comes into contact with the wearer, adjacent to the front-back center line A on one side of the front-back center line A extending between the two waist ends, and located on the front waist end 24 side. from one end 32, which is located approximately at the center of the longitudinal center line and the side edge, to the other end 34, which is located on the rear waist end 26 side, and the transverse center line B between the two waist ends. A diaper characterized in that a part of the surface along one line 36 extending in an intersecting manner is fixed to a part of the surface symmetrical with respect to the center line in the front-rear direction.