JP2000354608A - Absorbent article having favorable feeling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the irradiation to skin of non-woven fabrics which are used for an absorbent article as much as possible. SOLUTION: A long-sized absorbent body 3 is pinched between the internal surface of a liquid-permeable top sheet 2 and the internal surface of a liquid- impermeable back sheet 1, and solid gathers 7a and 7b are provided along both side edge sections in the longitudinal direction on the external surface of the liquid-permeable top sheet. Or, on the external surface of the liquid- impermeable back sheet, an armor sheet 13 is further placed for this absorbent article. In such an absorbent article, a silk protein is adhered to either one or two or more of the non-total surface of an non-woven fabric for the liquid- permeable top sheet 2, the non-total surface of a non-woven fabric for the solid gathers 7a and 7b, and the non-total surface of a non-woven fabric for the armor sheet 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable absorbent article, and more particularly to a disposable absorbent article having a good touch and a good feeling upon use.

[0002]

2. Description of the Related Art A disposable diaper is shown as an example of an absorbent article. As shown in FIGS. 1 and 2, basically, an inner surface of a liquid-impervious back sheet (1) made of a polyethylene film or the like and a non-woven fabric are provided. A long main body having a long absorbent body (3) sandwiched between the inner surface of the liquid top sheet (2) and a narrow central portion in a long direction in a planar shape, and further worn. At the outer side of the liquid-impervious back sheet (1), which is on the back side, one engaging member of a fastening tape (4a) to (4d) using an adhesive or a mechanical fastener such as a Velcro fastener is attached. The formed fastening tape is provided, and the left and right three-dimensional gathers (7a) made of a nonwoven fabric that stands up along the long direction when worn on both long sides of the outer surface of the liquid-permeable top sheet when worn. 7b) is provided.

The structure of the three-dimensional gathers (7a) (7b) is such that a side sheet (10a) (10a) ( 10b) extends inward and the proximal edge (12a) along the long side edge
(12b) Continuously joining the top sheet (2) to the top sheet (2) by means such as heat sealing, so that the extended inner side sheet portion and the leading edge (8a) (8b) can be contracted in the longitudinal direction. The solid gather is formed by a long elastic member (11) fixed thereto, and both ends (a1) to (a4) (hatched portions in the figure) of the three-dimensional gather in the longitudinal direction are top sheets. (2) Since the disposable diaper is spread during use, it appears upright because it is bonded to the surface.

[0004] In addition, a leg along the longitudinal direction for forming leg gathers (5a) and (5b) is formed at a joint portion of the central portion of the back sheet (1) with the side sheets (10a) (10b). A diagram in which the fastening tapes (4a) to (4d) are engaged with the outer surface of the liquid-impermeable back sheet (1) which is on the abdomen side when the elastic member for gathers (6) is sandwiched and further worn. The other engaging sheet of a polypropylene sheet or a mechanical fastener is fixed as a frontal tape which is not used. Further, an exterior sheet (13) made of non-woven fabric is adhered to the outer surface of the liquid-impermeable back sheet (1).

[0005]

Among the members used for disposable diapers as described above, a non-woven fabric is used for a member that comes into direct contact with the skin. Non-woven fabric is polyethylene (P
E), polypropylene (PP), PET, etc., but the required properties vary slightly depending on the site of use. That is, for liquid permeable top sheet, hydrophilic liquid permeability and bulky property to quickly absorb urine in use when used, and for solid gather, for hydrophobic and texture to prevent lateral leakage of urine, and for exterior sheet These include improvement of the texture of the back sheet and strength.

As described above, there are various characteristics required for the nonwoven fabric, but it is important that the skin irritate the disposable diaper as much as possible even when worn for a long time. Another important characteristic is the softness and feel when holding the disposable diaper in hand.

[0007]

SUMMARY OF THE INVENTION The present invention provides such a demand.
Made to cope with the liquid permeable topsheet
Between the inner surface of the backsheet and the inner surface of the liquid-impervious backsheet
An absorber is sandwiched between the liquid-impervious backsheet and the liquid-impervious backsheet.
In absorbent articles with an outer sheet attached to the outer surface,
Non-full surface and / or exterior sheet of non-woven fabric for liquid top sheet
Silk protein is adhered to the entire non-woven fabric
An absorbent article having a good touch. Ma
The present invention also provides a liquid-permeable topsheet with an inner surface and a liquid-impervious cover.
A long absorber is sandwiched between the inner surface of the backsheet and the transparent sheet.
Along the long sides of the outer surface of the liquid topsheet
To provide three-dimensional gathers, or
Absorbent articles with an exterior sheet attached to the outer surface of the sheet
Non-overall non-woven fabric for liquid-permeable top sheet, three-dimensional gather
Over the entire surface of the non-woven fabric for the exterior
Make sure that silk protein is attached to one or more
This is an absorbent article having a good touch. Soshi
At this time, silk protein was attached like a halftone dot
Gravure printing means to screen silk protein
It is effective to attach them in a shape.

[0008] The absorbent article referred to in the present invention is basically an absorbent article having a long absorbent body sandwiched between a liquid-permeable top sheet and a liquid-impermeable back sheet. An outer sheet is attached to the outer surface of the back sheet, and in any case, it refers to a diaper or the like for infants and adults having three-dimensional gathers, or a simple urine pad without three-dimensional gathers. In the present invention, silk protein is attached to at least one of the nonwoven fabric for liquid-permeable top sheet, the nonwoven fabric for three-dimensional gathers, and the nonwoven fabric for exterior sheets, which are members constituting the surface of these absorbent articles. This improves skin feel and texture, and greatly reduces skin irritation when the absorbent article is attached.

Further, in the present invention, the silk protein is adhered to the non-overall surface of each of the nonwoven fabrics, that is, partially, particularly in the form of a halftone dot. This is because it is impaired.
And it is good to use gravure halftone printing in order to enhance the mass production effect of the adhesion work, but it is also good to spray-coat the silk protein-containing solution using a screen having halftone openings as another method. is there. When the silk protein is adhered in this manner, the solid concentration of the silk protein in the coating solution is preferably 5 to 50%, more preferably 10 to 20%.

[0010]

Next, an embodiment of the present invention will be described. Fibroin powder (manufactured by Idemitsu Petrochemical Co., Ltd .; average particle size: 1 to 2 μm) obtained by finely dividing fibroin (silk protein) obtained by treating cocoon thread with hot water or the like was applied under the coating conditions shown in Table 1 to Table 2 The present invention disposable diaper comprising a nonwoven fabric to which the amount of silk protein shown in Table 2 is adhered by gravure dot printing on each nonwoven fabric for a disposable diaper as shown in FIG.
No.1 and No.2 were obtained.

[0011]

[Table 1]

[0012]

[Table 2]

Examples of the present invention disposable diapers No. 1 and No. 2
And a conventional disposable diaper that had not been subjected to silk protein treatment, a sensory test and an absorption performance test were performed on the feeling of use as shown in Table 3, and the results are also shown in Table 3.

[0014]

[Table 3]

According to Table 3, the disposable diapers Nos. 1 and 2 of the present invention are:
It can be seen that each of them is excellent in the usability such as the touch and the like, the urine absorption is good, and the absorbed urine is less re-wetted than the conventional disposable diapers.

[0016]

As described above, according to the present invention, the surface of the non-woven fabric portion of the absorbent article such as a disposable diaper which is in contact with the skin is improved in softness and softness. It has a remarkable effect, for example, it does not impair the inherent properties of the nonwoven fabric.

[Brief description of the drawings]

FIGS. 1A and 1B show an example of a disposable diaper, wherein FIG. 1A is a plan view and FIG. 1B is a sectional view taken along line AA ′ of FIG.

FIG. 2 is a perspective view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid-impermeable backsheet 2 Liquid-permeable topsheet 3 Long absorber 4a-4d Fastening tape 5a, 5b Leg gather 6 Elastic member for leg gather 7a, 7b Solid gather 8a, 8b Front edge 10a, 10b Side sheet 11 Long elastic member 12 Base edge 13 Exterior sheet

Claims (4)

[Claims] 1. A long absorbent body is sandwiched between an inner surface of a liquid-permeable top sheet and an inner surface of a liquid-impermeable backsheet, or a sheath is further provided on an outer surface of the liquid-impermeable backsheet. An absorbent article having a good touch, wherein a silk protein is attached to a non-entire surface of the non-woven fabric for a liquid-permeable top sheet and / or a non-entire surface of the non-woven fabric for an exterior sheet, wherein the absorbent article has a sheet adhered thereto. . 2. A long absorbent body is sandwiched between an inner surface of a liquid-permeable top sheet and an inner surface of a liquid-impermeable back sheet, and a lengthwise direction of an outer surface of the liquid-permeable top sheet is elongated. In an absorbent article provided with three-dimensional gathers along both side edges or further covered with an outer sheet on the outer surface of the liquid-impermeable backsheet, the non-overall nonwoven fabric for the liquid-permeable top sheet, the nonwoven fabric for three-dimensional gathers A silk protein adhered to any one or more of the non-entire surface and the non-entire surface of the nonwoven fabric for an exterior sheet. 3. The absorbent article according to claim 1, wherein the silk protein is attached in a halftone dot form. 4. The absorbent article according to claim 3, wherein the silk protein is attached in a halftone dot form by gravure printing means.