JPH0856986A - Absorber product and its manufacture - Google Patents

Abstract

PURPOSE: To provide an absorber product capable of exhibiting a leakproof effect without applying an excessive oppression on a wearing person by providing flange panels formed of a stretchable sheet material with a pair of first parts mounted at a main body so as to close part of leg holes and second parts connected to part of the one and the other first parts. CONSTITUTION: One waist hole W and the two leg holes L are formed in a wearing state in a main body 1 of this absorber product in the form of a tapeless type diaper and this main body 1 is provided with the flange panels 10 so as to cover about the lower half parts of the leg holes L. The flange panels 10 are formed to a prism type as a whole and have openings 11, 12 at their base and two slopes. The flange panels 10 have the first parts 10a existing on the two opposite side faces of a prism shape and the second parts 10b connecting the first parts 10a and are joined to the inner side surfaces of the thigh parts of the main body 1 in the band-shaped bonding regions formed by bending the lower edges thereof inward.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to absorbent products such as diapers for children or adults, as well as methods of making the absorbent products.

[0002]

2. Description of the Related Art Absorbent products such as diapers for children or adults are generally separated on both sides of the waist and can be spread flat, and the back waist and the front waist can be detachably connected with tape when worn. It is roughly classified into a tape shape of a type and a tapeless shape of a pants in which a waist hole portion and two leg holes are formed. In any form,
A back sheet made of a liquid impermeable material and a top sheet made of a liquid permeable, non-hydrophilic material placed inside the back sheet are overlapped, and the body containing the absorber in a part between the two is stretchable. It has a structure in which a waist portion and a leg hole portion are formed.

Conventional absorbent products generally have an absorbent body sandwiched between a liquid-permeable topsheet and a liquid-impermeable backsheet, as disclosed, for example, in Japanese Patent Laid-Open No. 3-82467. It has a structure in which a top sheet and a back sheet are thermocompression bonded around them. For the purpose of preventing leakage in a worn state, elastic leg gathers are provided so as to extend along the peripheral edge of the leg hole.

[0004]

In the prior art as described above, it is not possible to meet various demands which differ depending on the application or the use form in the leakage prevention which is the most basic function of the absorbent product. Has been recognized. Taking the problem of leakage in disposable diapers as an example,
The effect of preventing leakage depends on the close contact between the leg holes of the absorbent product and the wearer's legs, and the higher the close contact, the more
It is recognized that the risk of leakage can be reduced. Therefore, the greater the tightening force of the gathers provided along the leg holes, that is, the leg gathers,
It is thought that the degree of leakage will be small, but if the tightening force is too large, the leg gathers will bite into the legs of the wearer, so not only will the wearer feel pain during long-time wearing, The risk of skin irritation such as rash is increased.

An object of the present invention is to solve the above-mentioned problems of conventional absorbent products and to exert an extremely excellent leak preventing effect without giving excessive pressure to the wearer. It is an object of the present invention to provide an absorbent product that can be manufactured, and a method for producing such an absorbent product.

[0006]

According to the present invention, there is provided a main body forming one waist hole and two leg holes, and a flange panel made of a stretchable sheet material attached to the main body, The flange panel is
A pair of first parts attached to the body so as to block at least a part of the leg holes, at least a part of one first part and at least a part of the other first part And a second portion, the absorbent product being provided.

In the present specification, the term "flange panel" is used to mean a sheet-shaped member having a spread like a collar or a flange. In the absorbent product of the present invention, the first portion of the flange panel serves as a standing cuff provided on the side surface of the main body in the conventional product, and the second portion is provided in the central portion of the main body. It can be said that this is a combination of the roles of end caps and pocket structures used.

In the absorbent product of the present invention having such a structure, the flange panel exhibits a good leak preventing effect as well as an improved usability by contacting the wearer's leg over a wide area.

In the present invention, the main body may have a single structure in which all the parts from the front body to the back body are constructed by using a continuous backsheet and topsheet, but the front body part Alternatively, the front and rear body portions may be separately configured, and the front and rear body portions may be connected to each other at the joint portions of the respective crotch portions to have a separate front and rear structure.

According to another aspect of the invention, the second portion of the flange panel is sized or shaped to act as a separator that separates the crotch region of the body from the other regions.

In this case, in the flange panel, since the crotch where the excrement is concentrated is partitioned from other regions, when a large amount of excrement is supplied at a time exceeding the absorption speed of the absorbent body. However, since this excrement is stored and gradually absorbed, it exhibits a good leak prevention effect.

When the second portion of the flange panel is provided so as to surround the excretion part of the wearer or to surround the excretion part of the wearer, the inside of the flange panel forms a pocket partitioned from the outside. The separator function described above can be exerted to a higher degree.

Further, according to the present invention, the step of preparing two sheet-like members each having an opening in the central portion, the sheet-like members are superposed on each other, and then joined at the joint portions at both edges thereof. Prepare the first assembly, which is the front body part, consisting of the step of constructing a tubular sub-assembly, the strip-shaped continuous topsheet and backsheet stacked on top of each other, and the absorbent body sandwiched between them at appropriate intervals. And a step of preparing a second assembly that is a back body portion and is configured by stacking continuous strip-shaped topsheets and backsheets on top of each other and sandwiching an absorber between them at appropriate intervals; And the second assembly at a predetermined point P1 of the transport system path at a timing such that the absorbers and the absorbers face each other. And continuously feeding step, at synchronized speed as combined, point prior to the point P1 P
2, the step of sequentially supplying the sub-assemblies between the first and second assemblies so that the sub-assemblies are placed at predetermined positions with respect to the absorber, and the first and second Connecting the assembly and the sub-assembly at a predetermined joint, and cutting the first and second assemblies along a predetermined cutting line to separate the individual absorbent products. A method for manufacturing an absorbent product is provided.

The advantage of this method is that a standing cuff having a sufficient leakage prevention effect can be attached to the main body with a small number of steps.

An embodiment of the present invention will be described below with reference to the drawings.

[0016]

1 shows an absorbent product in the form of a tapeless diaper according to a first embodiment of the present invention in a worn state, in which a body 1 has one waist in a worn state. A hole W and two leg holes L are formed, and a flange panel 10 which will be described later is provided so as to cover approximately half below the leg holes. Along with the waist hole W, a waist gather 2 is provided to give elasticity to this portion.

As shown in the exploded view of FIG. 2, the body 1
Has a normal structure including a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the two, and the main body 1 includes a front body that covers the abdomen of the wearer. And a rear body that covers the hips, and has a rectangular shape slightly narrowed at the central portion on the long side, and the front body 1A and the rear body 1B are joined to each crotch portion. 4 is connected to the connecting portions 5 located on both sides of the both ends to form a pants-like shape. The present invention is also applicable to a tape-shaped absorbent product, and in this case, tapes for detachably connecting with the front body are attached to both sides of the back body of the main body 1. Further, it is also possible to adopt a main body in which the front body 1A and the back body 1B are integrated, which does not have the crotch portion connecting portion 4. Since the specific structure of the main body 1 is basically the same as that used in the conventional absorbent product, detailed description thereof will be omitted.

Further, in the central portion of the main body 1, that is, the crotch portion,
A flange panel 10 is attached. The flange panel 10 is generally prismatic and has openings 11 and 12 on its bottom surface and two bevels, respectively. This flange panel 10 has a first portion 10a located on two opposite side surfaces of a prism shape, and a second portion 10b connecting between the first portions, and its lower edge is bent inwardly. In the strip-shaped bond region, the main body 1 is applied with a suitable adhesive such as a hot melt adhesive.
Is joined to the inner surface of the crotch part. The reference numeral 12 indicates one of the first portions 1 in the central portion of the second portion 10b.
0a and a half of the second portion 10b connected to the 0a are shown as connecting portions for connecting the other first portion 10a and a half of the second portion 10b connected to the other first portion 10a.

As the material of the flange panel 10,
It is preferable to use a sheet-like material having a good feel to the touch and having appropriate stretchability, flexibility and leakproofness, for example, a nonwoven fabric having appropriate flexibility and stretchability, or a composite of a nonwoven fabric and an elastic body. Examples of stretchable non-woven fabrics include stretchable non-woven fabrics obtained by hydroentangling fibers such as polyester and polypropylene with a card web containing highly shrinkable conjugate fibers and then heat-shrinking the web. Further, as an example of the elastic composite, a composite of a non-woven fabric and an elastic film, or a composite of a non-woven fabric and an elastic meltblown is preferably used.

Further, the flange panel 10 provided so as to cover a part of the leg hole L, due to its elasticity,
It does not hinder the insertion of the legs when worn, and in the worn state, it closely adheres to the legs together with the leg gathers 3 and functions to stably hold the absorbent product at a predetermined position.

Further, the flange panel 10 exhibits good adhesion by contacting the wearer's crotch portion at the upper edges of the first portion 10a and the second portion 10b, and has excellent fit and leakage. Exerts a preventive effect. Further, the openings 11 and 12 provided on the two prism-shaped inclined surfaces provide a passage for guiding excrement to the absorber of the main body 1.

An example of a process for manufacturing an absorbent product provided with the flange panel 10 having the structure shown in FIG. 2 is shown in FIGS. 3 and 4. First, two substantially E-shaped sheet-shaped members 13 and 14 each having openings 11 and 12 of appropriate sizes from both side edges toward the central portion are prepared, and these are stacked on each other (step A), Then, the cylindrical sub-assemblies 16 are constructed by joining the joining portions 15 at both edges (step B). Next, the sheet-shaped members 13 and 14 are expanded in the direction of the arrow at the central portions of the respective sheet-shaped members 13 and 14 so that the coupling portions 15 face each other (steps C and D). Then, the hot-melt adhesive 17 is applied to the peripheral edges and the lower edges of the openings 11 and 12 of the sub-assembly 16 (step E).

If the connecting portions 15 may be exposed on both sides of the main body 1, in step A of FIG. 3, the sheet-shaped materials 13 and 14 are substantially annular and have an opening in the center. Alternatively, the hot-melt adhesive may be applied to a predetermined portion in step E by using.

The subassembly 16 thus constructed is then sent to the step shown in FIG. In FIG. 4, reference numeral A indicates a first assembly that is a front body portion and that is continuously supplied, and reference numeral B indicates a second assembly that is a rear body portion that is continuously supplied. The first assembly A is configured by stacking continuous strip-shaped topsheets A1 and backsheets A2 on top of each other, and sandwiching an absorber A3 at appropriate intervals between them, and a predetermined length in the direction of the arrow along the lengthwise direction. Transported at speed.
The second assembly B is also configured by stacking continuous strip-shaped top sheets B1 and back sheets B2 on top of each other, and sandwiching an absorber B3 at appropriate intervals therebetween.
It is conveyed in synchronization with the first assembly A in the arrow direction along the length direction.

The first assembly A and the second assembly B are formed by a suitable means such as a guide roller.
Each topsheet A1 at an appropriate point P1 on the transport path
And B1 are in contact with each other, and the absorbers A3 and B3 are superposed at such a timing that they face each other. On the other hand, at the point P2 before the point P1, the sub-assembly 16 obtained in the process of FIG. 3 is supplied at the timing synchronized with the first assembly A, and is placed on the top sheet A1 of the first assembly A. , Absorber A3
Are sequentially placed with a predetermined positional relationship maintained therebetween. Therefore, when the sub-assembly 16 reaches the point P1, the second assembly B is superposed on the sub-assembly 16, so that the sub-assembly 16 is sandwiched between the two assemblies A and B. Although not shown in the drawing, hot-melt type adhesives necessary for joining the assemblies A and B are pre-applied to predetermined positions of the assemblies A and B.

The three members thus superposed in a predetermined relationship have the steps of melting the hot melt adhesive and adhering the members located on both sides thereof, the step of cutting off the excess portion, and the individual steps. The product form is obtained by going through the process of separating into units (neither of which is shown).

FIG. 5 shows an absorbent article according to the third embodiment of the present invention. In FIG. 5, the flange panel 20 provided on the body 1 is similar to the flange panel of the embodiment shown in FIG. 2, but with two second parts 20b-1 and 2b corresponding to the second part 10b. One of the 20b-2, 20b-1, is wider than the other. The wide portion 20b-1 forms a large pocket for accommodating excrement with the inner surface of the main body 1 located below the wide portion 20b-1.

In the fourth embodiment of the present invention shown in FIG. 6, the flange panel 30 has an upper edge extending inward,
A flange 32 having an opening 31 in the center is formed.
This opening is for receiving excrement in a worn state, and the entire flange panel 30 functions as a pocket for this excrement.

FIG. 7 shows an absorbent article according to the fifth embodiment of the present invention. In FIG. 7, the flange panel 40 attached to the main body 1 includes two first portions 40a arranged on both sides of the crotch region of the main body 1 and one end portion of each of the first portions 40a. And one second portion 40b connected with each other. Ie the second part 4
0b exists only at one end of the crotch region.

The feature of the configuration of FIG. 7 is that the two first portions 40a and the one second portion 40b are made of a single stretchable sheet material. The flange panel 40 having such a structure is shown in FIG. 8 (A) on the front surface side and in FIG. 8 (B) on the back surface side, and is one of the substantially rectangular sheet-like members 41 having appropriate elasticity. A notch 42 is provided in the portion to form a substantially U-shape as a whole, and the front side thereof has a U-shape along the edge of the notch 42, and the back side thereof has only an outer edge, and each has a hot-melt adhesive. By applying adhesives 43 and 44 such as the above, and then arranging the whole in the center of the main body 1 and joining the sheet-like member 41 to the inner surface of the main body 1 by the adhesives 43 and 44. You can

In each of the above-mentioned embodiments, the main body in which the topsheet, the backsheet, and the absorber are each formed as a single sheet-shaped material is used. However, the present invention is not limited to this. It is also advantageous when using a main body having a structure in which a front body portion provided with an absorber and a rear body portion provided with a top sheet, a back sheet and an absorber are separately formed, and each is joined at a crotch portion. Applicable. Especially when the manufacturing process as shown in FIGS. 3 and 4 is adopted, the front body part and the back body part are joined together,
It is possible to simultaneously perform the step of attaching the flange panel to this, and work efficiency is further improved.

[0032]

As described above, in the absorbent product of the present invention, the first portion arranged so as to close a part of the leg hole and one or both ends thereof are connected to each other. A flange panel consisting of a second part is attached to the body. Therefore, due to the action of this flange panel, the leg of the wearer is held in the leg hole, and the crotch part maintains good adhesion between the wearer's body and
It is possible to improve the fit and wearing feeling and the leakage prevention effect.

Further, such an absorbent product can be mass-produced efficiently and on an industrial scale by the method of the present invention, and quality stabilization and cost reduction can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view showing an absorbent product according to a first embodiment of the present invention.

FIG. 2 is a developed perspective view of the absorbent product shown in FIG.

FIG. 3 is an explanatory view showing a process of producing a flange panel used in the absorbent product of FIGS. 1 and 2.

FIG. 4 is an explanatory view showing a process of incorporating the flange panel obtained in FIG. 3 into a main body.

FIG. 5 is a developed perspective view showing an absorbent product according to a second embodiment of the present invention.

FIG. 6 is a developed perspective view showing an absorbent product according to a third embodiment of the present invention.

FIG. 7 is a developed perspective view showing an absorbent product according to a fourth embodiment of the present invention.

FIG. 8 is a plan view showing a sheet-like member constituting a flange panel of the absorbent product of FIG. 7, (A) being a front surface side and (B) being a back surface side.

[Explanation of symbols]

 1 Main Body 2 West Gather W West Hole L Leg Hole 10 Flange Panel 10a First Part 10b Second Part 11,12 Opening 13,12 Sheet Material 15 Bonding Part 16 Assembly 17 Adhesive A, B Assembly A1, B1 Top Sheet A2, B2 Backsheet A3, B3 Absorber 20 Flange panel 20a First part 20b-1 Second part 20b-2 Second part 30 Flange panel 31 Opening 32 Flange 40 Flange panel 40a First part 40b No. Part 2 41 Sheet material 42 Notch 43,44 Adhesive

Claims (9)

[Claims] 1. A body comprising a waist hole and two leg holes, and a flange panel made of a stretchable sheet material attached to the body, the flange panel comprising at least the leg hole. A pair of first parts attached to the main body so as to close a part thereof, and a second part connected to at least a part of the one first part and at least one of the other first part. An absorbent product characterized by being provided. 2. The absorbent product according to claim 1, wherein the second portion is provided only in the first portion. 3. The absorbent product according to claim 1, wherein the second portion is provided at both ends of the first portion. 4. The second portion extends above an absorbent body region located in a central portion of the main body and forms a pocket with the main body. Absorber product according to paragraph. 5. The flange panel is constructed of a generally U-shaped stretchable sheet material having a notch, the sheet material having one surface at the edge of the notch and the other surface at the edge. The absorbent product according to claim 4, which is joined to an inner surface of the main body at an outer edge portion. 6. The main body includes a front body and a back body, and the front body and the back body have a space between the front body and the back body from both ends on the side of the waist hole at both edges thereof. The absorbent product according to any one of claims 1 to 5, wherein the absorbent products are bonded to each other at a part of a length reaching a boundary. 7. A tubular sub-assembly in which two sheet-like members each having an opening at the center are prepared, and the sheet-like members are superposed on each other and then joined at joints at both edges thereof. And a step of preparing a first assembly that is a front body portion and is configured by stacking continuous strip-shaped topsheets and backsheets on top of each other and sandwiching an absorbent body at appropriate intervals therebetween, and Of a continuous top sheet and a back sheet of the above, and a second assembly that is a rear body portion and is configured by sandwiching an absorber at an appropriate interval therebetween, the first assembly and the first assembly So that the two assemblies are superposed at a predetermined point P1 of the transport system path at such a timing that the respective absorbers and face each other. A step of continuously supplying at a desired speed; and at a point P2 before the point P1, the sub-assembly is fixed to the absorber between the first and second assemblies. Sequentially supplying the first and second assemblies and the sub-assemblies at a predetermined joint, and the first and second assemblies at predetermined cutting lines. And a step of separating the absorbent product into individual absorbent products by cutting the absorbent product along the lines. 8. The method according to claim 7, further comprising the step of pre-applying a hot-melt adhesive to the periphery of the opening of the sub-assembly and the lower edge of the sub-assembly. 9. The sub-assembly is provided with two substantially E-shaped sheet-like members each having an opening of an appropriate size from both side edges toward the central portion, and the sheet-like members are superposed on each other, and then the sheet-like members are superposed on each other. A structure in which the sheet-shaped members are expanded in the direction of the arrow at the central portions of the respective sheet-shaped members so that the coupled portions face each other after the tubular portions are coupled by the coupling portions of both edge portions. The method according to 7 or 8.