JPS6241302A - Disposable absorbing panty and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to disposable absorbent pants formed in advance into a complete pant shape for use as diapers for infants, so-called training pants, diapers for incontinent persons, etc. Regarding.

(Prior Art) Disposable absorbent pants that are previously formed into a complete pants shape and have elastic members in a waistband and a pair of leg holes are disclosed in Japanese Patent Laid-Open No. 11507/1983.

(Problems to be Solved by the Invention) According to the pants of the known art, there is a gap between the horizontally rectangular water-permeable top sheet and the same-shaped water-impermeable back sheet, which are sized to form the front body and the back body. .

Absorbent cores for the front body and the back body are provided with a space in the center area between these horizontally opposing ends, and an elastic member for the waistband is provided at the upper end of the backsheet, and an elastic member for the leg hole is provided at the lower end of the backsheet. By bonding each member to form a laminate, bending the laminate around the space, and joining the front body and the back body at the lower end between the space and the opposite end, Formed in the shape of pants.

However, although pants formed in this way have the advantage of being simple to manufacture, they not only have problems with their absorbent function, but also because the joint halves of the front and back body components are located at the crotch. Since the crotch is the two halves that receive the strongest tensile force due to the movement of the wearer's legs, the two halves of the joint may separate or break, causing loss of pant function and leakage of excrement; There is a problem in that it gives an unpleasant and strange feeling. Furthermore, the front body and the back body are formed to have the same size, and the pair of leg holes are located on the joining line, that is, on the center line dividing the front body and the back body in the longitudinal direction of the pants. Therefore, due to the rigidity of the components of the pants, especially the absorbent core, and the body shape of the human body (infant), the two halves of the buttocks are stretched (so-called ``tight''),
There is also the problem that the two halves of the abdomen become loose (so-called ``sagging'').

Therefore, an object of the present invention is to provide disposable absorbent pants that can solve the above-mentioned problems by extremely simple means.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides that the pants body has one
A water-permeable top sheet that is one covering sheet in contact with the wearer's skin, a water-impermeable back sheet that is the other covering sheet located on the opposite side of the top sheet, and an absorbent material that is interposed between the two sheets. Disposable absorbent pants including a core and elastic members respectively provided in the waistband and a pair of leg holes, wherein the pants body is folded back around the crotch and opposite side edges are joined, and the pair of leg holes is formed in a front region bounded by a folding center line of the pant body, the top sheet, the back sheet, and the absorbent core are seamlessly continuous across the front and rear regions of the pant body, and the crotch region is narrow. The pants and the method for manufacturing the same are characterized in that the elastic members of the waistband and the pair of leg holes are respectively bonded and stretched between the top sheet and the back sheet.

The components of the pants include those used in conventional disposable diapers, such as the top sheet made of a fibrous non-woven fabric or porous plastic film, the back sheet made of a plastic film or waterproofed fibrous non-woven fabric, and the As the absorbent core, fluff pulp or water-absorbing paper can be used, and as the elastic member, thread-like or ribbon-like rubber, relatively wide foam, or thermoplastic plastic film that exhibits elasticity by heat treatment can be used. A hot melt adhesive is used as a means for joining these members, but depending on the part of the pants, heat welding may be used.

(Function) The pants according to the present invention are worn in the same way as normal pants, and when worn, the waistband and leg holes create gears with their respective elastic members, and the pants fit into the corresponding parts of the wearer. will be elastically compressed and sealed.

(Example) Further, the pants according to the present invention will be described below based on the illustrated example.

In FIG. 1, the pants main body 1 is indicated by the reference numeral 1 in its entirety. The pants body 1 includes a vertically rectangular water permeable top sheet 2 which is one covering sheet, an impermeable back sheet 3 of the same type which is the other covering sheet, an absorbent core 4, a waistband elastic member 5a, 5b and a pair of leg hole elastic members 6a, 6b, 6c, and 6d, the top sheet 2 is a nonwoven fabric, the back sheet 3 is a plastic film, and the absorbent core is a mat-like body of fluff pulp and the top sheet 2 is made of a nonwoven fabric. Water-absorbing paper and elastic members 5a, 5b, and 6a placed on the bottom surface.

6b, 6c, and 6d are relatively wide (10-30cm)
Each uses urethane foam.

An elastic member 5 is provided at the vertically opposite end of the upper surface of the back sheet 3.
Parts a and 5b are each glued together with a hot-melt adhesive while being stretched. In addition, a central region between the horizontally opposing side edges is opposed to each other at a slight interval in the vertical direction and is biased toward the front region 15a side with the horizontal virtual center line X of the upper surface of the backsheet 3 as a boundary. In the opposing area where
A, 6b, 6c, and 6d are each glued together with a hot melt adhesive while being stretched. On the upper surface of the back sheet to which these elastic members are adhered, there are elastic members 5a, 5.
The length is located slightly inward from the opposite side edge of the back sheet 3, and is located between the laterally opposing elastic members 6a, 6b and 6c, 6d. The absorbent core 4 is adhered with a hot-melt adhesive. Furthermore, a top sheet 2 of the same shape and size is adhered to the upper surface of the back sheet 3 to which these elastic members and the absorbent core are adhered, using a hot melt adhesive. , and the elastic members 6a, 6c and 6b, 6d are sealed and bonded to the absorbent core 4.

The pants main body 1 formed by laminating in this manner appropriately biases the top sheet 2 and back sheet 3 toward the former of the front region 15a and the rear region 15b, which are divided into two with the virtual center 4@x as the border. On the line Z, a straight line 7 is cut from a position slightly outwardly spaced from the opposite side edges of the central region of the absorbent core 4 to the opposite outer edges of the top sheet 2 and the back sheet 3. This cut may be made into a horizontally elongated oval 8, as shown by the dashed line in FIG. Then, the pants body 1 is folded back about the imaginary center line X so that the top sheet 2 is on the inside, and the opposite side edges of the pants body 1 are bonded using a hot melt adhesive. This joining may be done by thermal welding for reasons such as tear strength. In this way, the pants according to the present invention have the front and rear waistbands 9 joined together in a ring shape, and have a pair of leg holes 10a and 10b opening at the lower end, as shown in FIG. 9 and a pair of leg holes 10a, 10b, each of which has the elastic members described above, is formed in a complete pants shape.

FIG. 3 shows another embodiment, in which the telescopic member 6a of the embodiment shown in FIG.
Long telescopic members 11a and llb corresponding to the continuous state of b and 6d are used, and these are bonded only in a region 12 shown by a rectangular chain line, and the other configuration is the same as that of the embodiment shown in FIG. is substantially the same as

FIG. 4 shows yet another embodiment, in which the telescopic members 6a, 6b, k.

6d or a long and wide elastic member 13 corresponding to a continuous state of the elastic members 11a and llb, the cutting 7 of the embodiment shown in FIG. Area 14 surrounded by a square
The other structure is substantially the same as that of the embodiment shown in FIG.

Note that in the embodiment shown in FIG.
, 5b, 6a, 6b, 6c, and 6d have been described as being adhered to the back sheet 3, and although it is preferable to do so in terms of the function of the pants, these are not adhered to in the manufacturing process of the pants. In some cases, it may be adhered to the top sheet 2. Furthermore, in the embodiments shown in FIGS. 3 and 4, it has been described that the elastic members 11a, llb, and 13 are bonded only in the areas 12 and 14 shown surrounded by chain lines. However, it is preferable to do so in order to prevent the crotch of the wearer from getting wrinkles when wearing the pants.

The adhesion may be continuous in the lateral direction, and the leg holes 10a, the elastic members 6a, 6c for jobs,
lla.

, 13 may also be completely located in the front region 15a, if necessary.

The absorbent core 4 may be made thicker in either the buttock region, the abdominal region, or a portion thereof. Also.

Although not shown, an elastic member may be stretched and bonded over almost the entire length of the opposite side of the pants body 1 so that gathers are also formed on the opposite side.

(Effects of the Invention) The pants according to the present invention are formed in a complete pant shape, so they are extremely easy to wear once compared to conventional disposable diapers that are assembled each time they are worn.
Needless to say, it has good fit to the wearer's body.

In particular, like the pants made from the previously mentioned known technology.

Between the pair of leg holes, that is, at the crotch, there is no joining of any structural members, and unlike the pants, the absorbent core is continuous across the front and rear regions. Therefore, even if one wearer moves both legs freely,
There is no possibility that the crotch is separated or damaged and loses its function as a pant, causing excrement to leak or causing an unpleasant discomfort to the wearer. Furthermore, since the rear region is formed larger than the front region and the leg holes are located in the front region, the two halves corresponding to the buttocks are stretched due to the rigidity of the constituent members and the wearer's body shape. Or,
The two halves corresponding to the belly halves do not come loose, and the fit is further improved.

Furthermore, although the pants have such excellent effects, their manufacturing method is also simple.

[Brief explanation of drawings]

The drawings show an embodiment of the pants according to the present invention; FIG. 1 is a partially cutaway developed plan view, FIG. 2 is an assembled diagram, and FIG. 3 is a partially cutaway diagram showing another embodiment. FIG. 4 is a partially cutaway developed plan view showing still another embodiment. 1... Pants body 2... Top sheet 3.
... Back sheet 4 ... Absorbent cores 5a, 5b ... Waistband elastic members 6a, 6
b, 6c, 6d, lla, llb, 13...
- Leg hole elastic member 7.8... Cutting line 9... Waistband 10a, 10b... Leg hole 15a... Front area

Claims (4)

[Claims] (1) The pants body includes a water-permeable top sheet in contact with the wearer's skin, an impermeable back sheet located on the opposite side of the top sheet, an absorbent core interposed between the two sheets, and a waistband. and a pair of leg holes, and an elastic member each having in a pair of leg holes, and comprising the following items. a. The pants body is folded back around the crotch and the opposing side edges are joined. b. The pair of leg holes are formed in a front region bordering on the center line of the pants body. c. The top sheet, the back sheet, and the absorbent core are seamlessly continuous over the front and rear regions of the pants body, and the crotch region is narrow. d. Each of the elastic members of the waistband and the pair of leg holes is bonded between the top sheet and the back sheet under tension. (2) A method for manufacturing disposable absorbent pants characterized by including the following items. a. Glue a horizontally long elastic member for a waistband to the vertically opposite ends of one vertically rectangular cover sheet while stretching them. b. Glue a long stretchable leg hole member in the same direction between the horizontally opposite side edges of the one covering sheet on the front region bounded by the imaginary center line between the longitudinally opposite ends, while being stretched. thing. c. Adhering an absorbent core having a narrow central region to the one covering sheet to which each of the elastic members is adhered. d, in a state where each of the elastic members and the absorbent core are sandwiched,
The other covering sheet having a vertically rectangular shape is adhered to the one covering sheet to which each of the elastic members is adhered, and at least an area of a required width along the length of the leg hole elastic member is sealed. e. The leg hole elastic member is attached to both covering sheets between a position slightly outwardly spaced from opposing side edges of the central region of the absorbent core to opposing outer edges of both covering sheets. Cutting both the covering sheets into two in the longitudinal direction. f. A pants body formed by laminating both the covering sheets and the absorbent core is folded back so that the water-permeable sheet of both the covering sheets is located on the inside, and the opposing side edges of the pants main body are joined. and seal. (3) The method for manufacturing pants according to claim 2, wherein the one covering sheet is a water-impermeable backsheet and the other covering sheet is a water-permeable top sheet. (4) The method for manufacturing pants according to claim 2, wherein the cutting of both the covering sheets is an oval shape that is elongated in the lateral direction of the covering sheets.