JPS6269804A - 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) Conventionally, disposable absorbent pants that are formed in advance into a complete pant shape and have elastic members in a waistband and a pair of leg holes are disclosed in JP-A-58-H51076. Problems to be Solved) According to the pants of the above-mentioned known technology, these water-permeable top sheets are arranged between a horizontally rectangular water-permeable top sheet and a water-impermeable back sheet of the same shape, which are sized to form a front body and a back body. Absorbent cores for the front body and the back body are provided with a space in the center region between the opposite ends in the lateral direction, 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 adhering each to form a laminate, bending the laminate around the space, and joining the front body and back body at the lower end between the space and the opposite end, a pants-shaped is formed.

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.

Therefore, one 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 so that the opposite side edges are formed except for the waistband region and its vicinity. joined, the top sheet, the back sheet, and the absorbent core are continuous across the front and rear regions of the pants body, the crotch region is narrow, and the waistband and the pair of leg holes are elastic members. are each bonded under tension between the top sheet and the back sheet,
The pants and method of manufacturing the same are characterized in that a tape fastener is adhered to the back side opposite the waistband.

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 manner as regular pants, and the waistband is fastened with a tape fastener. 1 and elastically compresses and seals the relevant part of the wearer.

(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 telescopic members 6a, 6b, 6c, and 6d. Top sheet 2 is made of non-woven fabric, and back sheet 3 is made of plastic film.

The absorbent core 4 includes a mat-like body of fluff pulp, water-absorbing paper arranged on the upper and lower surfaces thereof, and elastic members 5a and 5b.

6a, 6b, 6c, and 6d have relatively wide widths (10~
30IlIII) urethane foam was used, respectively.

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. Further, in opposing areas that face each other with a slight interval in the vertical direction with the virtual folding line X in the horizontal direction on the upper surface of the back sheet 3 as a boundary, and leave a central area between the horizontally opposing side edges.

The stretchable members 6a, 6b, 6c, and 6d are each bonded to each other with a hot melt adhesive while being stretched. On the upper surface of the back sheet 3 to which these elastic members are adhered.

A length located slightly inward from the elastic members 5a and 5b,
Expandable members 6a, 6b, and 6c are located slightly inward from the opposing side edges of the backsheet 3 and are laterally opposed to each other.

The absorbent core 4 is formed into an hourglass shape symmetrical with respect to the horizontal virtual folding line X and the vertical virtual center line Y located between the absorbent core 4 and the vertical center line Y, which are located between the absorbent core 4 and the vertical center line Y, which are located between the absorbent core 4 and the horizontal virtual fold line 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 area between the elastic members 6a, 6c and 6b, 6d is sealed with the backsheet 3, and is also bonded to the absorbent core 4 by adhesion.

The pants body 1 formed by laminating in this manner has the top sheet 2 and the back sheet 3 spaced slightly outward from the opposing side edges of the central region of the absorbent core 4 on the virtual folding line X. A straight line 7 is cut between the position and the opposing outer edges of the top sheet 2 and back sheet 3.

This cut may be made into a horizontally elongated oval 8, as shown by the dashed line in FIG. And the pants body 1
, with the top sheet 2 on the inside, fold it around the imaginary fold @ It is. This joining may be done by thermal welding for reasons such as tear strength. Furthermore, pressure-sensitive tape fasteners 16a and 16b are bonded to opposite sides of the waistband 9 on the back side.

In this way, one of the pants according to the present invention, as shown in FIG. 2, has a pair of leg holes 10a that are connected in a ring shape except for the waistband region and its vicinity, and open at the lower end.
10b, and the waistband 9 and the pair of leg holes 10a, 10b are provided with the aforementioned elastic members, and are formed in the shape of pants with a tape fastener 16.

FIG. 3 shows another embodiment.5 In this embodiment, 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 surrounded 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, 6c.

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. 1 is performed together with the elastic member 13, and this It is bonded only in a region 14 shown as a rectangular box surrounded by a chain line, and the other structure is substantially the same as the embodiment shown in FIG.

FIG. 5 shows yet another embodiment, in which the absorbent core 4 is narrow in the frontal region 15a divided into two by the virtual center line
A cutting line 7 or 8 is provided for forming the leg holes 10a, 10b on a line Z which is wide at b and is appropriately offset towards the front region 15a.

Note that in one or more embodiments, the telescopic member 5a.

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, 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, respectively. Although it is preferable to do so in order to prevent the formation of gathers in the crotch of the wearer wearing the pants, their adhesion may be continuous in the lateral direction. 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 into a pants shape, they are extremely easy to wear and fit the wearer's body better than conventional disposable diapers that are assembled when worn. Of course, it is good.

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. Also, since a tape fastener is attached in addition to the elastic member of the waistband, the tightness around the waist can be adjusted.

Therefore, even when the wearer freely moves both legs, there is no possibility that the crotch will separate or break and lose its function as a pant, causing excrement to leak or giving the wearer an uncomfortable feeling of discomfort. 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 cut-away developed plan view showing still another embodiment, and FIG. 5 is a partially cut-away developed plan view showing still another embodiment. 1... Pants body 2... Top sheet 3... Back sheet 4... Absorbent cores 5a, 5b... Elastic members for waistband 6a, 6
b, 6c, 6d, lla, llb, 13...
・Leg hole elastic member 7.8... Cutting line 9... Waistband

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 main body is folded back around the crotch, and the opposing side edges are joined except for the waistband region and its vicinity. b. 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. c. 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. d. A zipper is adhered to the opposite side of the waistband on the back side. (2) A method for manufacturing disposable absorbent pants characterized by including the following items. a. Attach tape fasteners to opposite sides of one longitudinal end of one longitudinally rectangular covering sheet. b. Gluing horizontally long elastic members for a waistband to opposite ends of the one covering sheet in the longitudinal direction while being stretched. c. 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. 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 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. f. 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. 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 the opposite side edges of the pant main body are placed at opposite ends in the longitudinal direction. be joined and sealed except for. (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.