JPS6221803A - Disposable absorbable 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 pant shape and have elastic members in a waistband and a pair of leg holes are disclosed in Japanese Patent Laid-Open No. 58-115107.

(Problems to be Solved by the Invention) According to the pants of the above-mentioned known technology, there is a water-permeable top sheet having a horizontal rectangular shape that forms the front body and the back body, and a water-impermeable back sheet of the same shape. .

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 because the absorbent cores in the front and back sections of the crotch are discontinuous, but also have problems with the absorption function. The central joint between the front body and the back body is located at the crotch. However, the joints of the crotch are subject to the strongest tensile forces due to the movement of the wearer's legs, so the joints 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 to people. Furthermore, since the constituent members of the pants, particularly the absorbent body, have rigidity, there is a problem in that the opposite side of the pants tends to separate from the body.

Therefore, it is an object of the present invention 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 bent around the crotch so that opposing side edges are joined, and the longitudinal direction of the opposing sides is joined. A side elastic member is disposed at the side, the absorbent core is continuous across the front and back regions of the pants body, the crotch region is narrowly formed, and the waistband, the pair of leg holes, and the opposite side of the pants body are formed. each elastic member with an edge is adhesively bonded under tension between the top sheet and the back sheet, respectively;
The present invention is characterized by the pants and the manufacturing method thereof.

The components of the pants include those used in conventional disposable diapers, for example, the top sheet is a fibrous non-woven fabric or porous plastic film, the back sheet is a plastic film or waterproofed fibrous non-woven fabric, The absorbent core may be fluff pulp or water-absorbing paper, and the elastic member may be thread-like or ribbon-like rubber, a relatively wide foam, or a thermoplastic plastic film that exhibits elasticity when heat treated. 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 manner as ordinary pants, and when worn, the waistband, legholes, and sides form gears with the respective elastic members, allowing the wearer to wear them. The area is 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, a pair of leg hole elastic members 6a, 6bt 6c* 6d,
It includes side telescopic members 15a and 15b. The top sheet 2 is a non-woven fabric, the back sheet 3 is a plastic film, the absorbent core is a flap pulp mat and water-absorbing paper placed on the top and bottom surfaces thereof, elastic members 5a, 5b,
6a, 6b, 6c, 6d, 15a.

1.5b uses relatively wide (10 to 30 m) urethane foam.

An elastic member 5 is provided at the vertically opposite end of the upper surface of the back sheet 3.
A and 5b are glued together with a hot-melt adhesive under stretching. In addition, in opposing areas that face each other with a slight interval in the vertical direction with the virtual folding line 6a, 6b, 6c, 6
d are each glued together with a hot-melt adhesive under stretching. Furthermore, elastic members 15a and 15b are bonded in the longitudinal direction along opposite side edges of the upper surface of the backsheet 3 with a hot melt adhesive while being stretched. The upper surface of the back sheet 3 to which these elastic members are bonded has a length that is located slightly inward from the elastic members 5a and 5b, and a length that is located slightly inward from the opposing inner edges of the elastic members 15a and 15b, and Laterally opposing telescopic members.

Absorbent core 4 formed into a symmetrical sand mold with the horizontal virtual folding line X and the vertical virtual center line Y located between 6a, 6b, 6c, and 6d is adhered with a hot melt adhesive. It is. Furthermore, on the upper surface of the back sheet 3 to which these elastic members and the absorbent core are bonded,
A top sheet 2 of the same shape and size is adhered to this using a hot melt adhesive.
is bonded to seal the backsheet 3 at its periphery and the region between the elastic members 6a, 6c and 6b, 6d, and also to bond to the absorbent core 4.

The pants main body 1 formed by laminating in this way includes a top sheet 2, a back sheet 3, and elastic members 15g, 15.
b, on the imaginary folding line It is cut. 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 around the virtual folding line X so that the top sheet 2 is on the inside, and the opposite side edges of the pants body 1 are bonded with 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 five front and rear waistbands 9 joined together in a ring shape, a pair of leg holes 10a and 10b opening at the lower ends, and a waistband. 9 and a pair of leg holes 10
It is formed into a complete pants shape, with the elastic members a and 10b on the opposite side.

FIG. 3 shows another embodiment, in which the telescopic members 6a, 6c, 6 of the embodiment shown in FIG.
Long telescoping 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 dot-dashed line, and the other configuration is the same as that shown in FIG. Substantially the same as the example.

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

6d or a long and wide elastic member 13 corresponding to a continuous state of the elastic members 11a and Ilb, the cutting 7 of the embodiment shown in FIG. Area 14 indicated by a rectangular chain line
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 it is preferable to do so in terms of the function of the pants.
These may be bonded to the top sheet 2 in some cases during the pants manufacturing process. Also,
In the embodiment shown in FIGS. 3 and 4, the elastic member 1
1a, llb, 13 are area 1 surrounded by dashed lines
2.14, and although it is preferable to do so in order to prevent the formation of gathers in the crotch of the wearer wearing the pants, these adhesives are not adhered to the sides. It may be continuous in the direction.

Furthermore, the cut line 7 in the illustrated example corresponds to the virtual folding line
, that is, the center of the vertical length of the pants body 1 (1/
2), but for reasons such as making the area where the wearer's buttocks are located (back body) wider than the area where the wearer's abdomen is located (front body), the position is closer to the abdomen than the virtual fold line X. In this case, it goes without saying that the telescopic members 6a, 6b, 6c
, 6d, lla, Ilb, 13 also.

It goes without saying that it is located like that, and
It goes without saying that the absorbent core 4 has an asymmetrical shape with respect to the virtual folding line X as shown in the illustrated example. Further, if necessary, the absorbent core 4 may be made thicker in either the buttock region, the abdominal region, or a part thereof.

(Effects of the Invention) Since the pants according to the present invention are formed in a complete pant shape, they are extremely easy to wear 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, unlike the pants according to the known technology described above, there is no joint between the component parts between the pair of leg holes, that is, at the crotch, and unlike the pants, the absorbent core is connected to the front body and the back body. Continuous throughout. Therefore, even when the wearer freely moves both legs, there is no possibility that the crotch will separate or break and lose the pant function, causing excrement to leak or giving the wearer an uncomfortable feeling of discomfort. Since the pants also have elastic members for the sides, even if the constituent members of the pants have rigidity, the opposite side of the pants is in close contact with the body, making it extremely comfortable to wear and allowing the wearer to exercise easily. Yet again.

Although the pants have such excellent effects, they are also easy to manufacture.

[Brief explanation of the drawing]

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 61... Pants body 2... Top sheet 3... Back sheet 4... Absorbent core 5a, 5b...Extensible member 6 for cloth L-band
a, 6b, 6c, 6d, lla, Ilb,
13... Elastic member for leg holes

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. Side expandable members are arranged in the vertical direction along the opposing side edges. c. The absorbent core is continuous across the front and rear regions of the pants body, and the crotch region is narrow. d. Each of the elastic members of the waistband, the pair of leg holes, and the opposing side edges of the pants body are respectively bonded under tension between the top sheet and the back sheet. (2) Disposable absorbent pants characterized by including the following items: a. Gluing elastic members for a waistband which are long in the same direction to the longitudinally opposite ends of one of the vertically rectangular covering sheets while being stretched. b. Adhering a long leg hole elastic member in the same direction at or near the central region between the longitudinally opposing ends of the one covering sheet and between the laterally opposing side edges thereof while being stretched. c. Adhering long side elastic members in the same longitudinal direction along the opposite side edges of the one covering sheet while being stretched. d. Adhering an absorbent core having a narrow central region to the one covering sheet to which each of the elastic members is adhered. e, in a state including each of the elastic members and the absorbent core,
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. f. Both the covering sheets are connected to the leg hole elastic member between a position slightly outwardly spaced from the opposite side edges of the central region of the absorbent core to the opposite outer edges of the both covering sheets. Cutting the side elastic members into two in the longitudinal direction of both the covering sheets. g. Fold back the laminated pant body of both the covering sheets and the absorbent core so that the water-permeable sheet of both the covering sheets is located on the inside, and join the opposite side edges of the pant main body to seal it. to do. (3) The 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 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.