JPH07110280B2 - Method for manufacturing sanitary napkin with elastic body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a sanitary napkin to which an elastic body is added.

[0002]

2. Description of the Related Art A sanitary napkin is designed to prevent menstrual blood and excrement from adhering to underwear by absorbing menstrual blood and excrement. In order to prevent the napkin from slipping further, wings are formed on both sides of the napkin body, and the wing is wrapped around underwear so that the sanitary napkin is fixed to the underwear.

[0003]

DISCLOSURE OF THE INVENTION The first invention of the present application is, in the above-mentioned known sanitary napkin with wings, for deforming the sanitary napkin along the body shape in order to surely maintain the sanitary napkin at a predetermined position. Attach an elastic body,
In addition, it is an object to reduce material loss in the wing portion during manufacturing and to simplify the manufacturing process to reduce manufacturing cost. The second invention of the present application eliminates the wings of the sanitary napkin with the wing of the first invention of the present application, and deforms the napkin along the body shape in the same manner as in the first invention so that the sanitary napkin is moved at a predetermined position. The task is to maintain it reliably.

[0004]

According to the present invention, a strip-shaped elastic member 3 is formed by continuously supplying an elastic body 2 under tension on a nonwoven fabric 1 and folding the elastic body 2 in two. And the strip-shaped elastic member 3 having a predetermined size.
Is attached to the lower side of the napkin body 4, a step of supplying the back sheet 5 to the back side of the mat layer 6 of the napkin body 4 to which the strip-shaped elastic member 3 is attached and attaching the back sheet 5 to complete the semi-finished product 8. A step of cutting the semi-finished product 8 into a predetermined shape, and separating the semi-finished product 8 into individual products by end-sealing and side-sealing, and manufacturing a sanitary napkin containing an elastic body. Provide a way.

In the first invention of the present application, the band-shaped elastic member 3 has a wide width having the wing portion w, and the wing portion w is formed.
Is attached to the lower side of the napkin main body 4, and the wide band-shaped elastic member 3 is attached to the lower side of the napkin main body 4, whereby the elastic body 2 is attached to the lower side of both central portions of the napkin main body 4. In the second invention of the present application, the elastic member 2a has a structure in which no wing portion is present, and the elastic member 3a is located within the width of the napkin body 4 and attached to the lower side of the napkin body 4, thereby forming the elastic body 2 Are attached to both sides of the center of the napkin body 4.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first invention of the present application will now be described in detail based on embodiments with reference to FIGS. First Step Referring to FIG. 1, an elastic body 2 is applied above a wing material (nonwoven fabric or other known wing member) 1 with a tension of about 1 to 2 times to form a nonwoven fabric 1. Supply continuously in the same direction. Second step Referring to FIG. 2, after applying an adhesive (hot melt) thinly to the folded portion by a spiral spray or the like, folding the elastic body 2 in two and pressing the folded portion,
A wide band-shaped elastic member 3 having a wing portion w is formed. By applying a thin layer of adhesive (hot melt), the folded portion can be flexibly finished.

Third Process Referring to FIG. 3, the strip-shaped elastic member 3 manufactured in the above process is cut into a required length by a cutter 13 and an adhesive (hot melt) coating device 14 which are arranged to face the roll 12. While being cut and applied with an adhesive (hot melt), it is supplied to the lower side of the napkin body 4 being conveyed from the main line 10 by the roll 11 and the roll 12. Roll 12
By being pressed between the press roll 15 and the roll 12 which are arranged to face each other,
The napkin body 4 including the mat layer 6 and the top sheet 7 is positioned at predetermined positions on both sides of the center of the napkin body 4, and attached to the napkin body 4. In addition, as shown in FIG. 4A, the supply mechanism of the belt-shaped elastic members 3 is a double unit, and the belt-shaped elastic members 3 are simultaneously supplied to the left and right symmetrical positions of the napkin body 4. Fourth Step Referring to FIGS. 3 and 4, by supplying the backsheet 5 of the PE sheet to the back surface side of the mat layer 6 of the napkin body 4 to which the strip-shaped elastic member 3 is attached, by the roll 16 and the roll 17, The semi-finished product 8 shown in FIGS. 4A and 4B is completed. In FIG. 3, 18 is a vacuum box and 19 is a guide roll. The mat layer 6 is composed of a pulp mat, a polymer sheet, and other known absorbers for napkins.

Fifth Step Referring to FIG. 5, the semi-finished product 8 shown in FIG. 4 is cut along a two-dot chain line C1 and a two-dot chain line C2 by an are cutter (not shown), and then by a sealing device (not shown). The shaded area A,
After end-sealing B and end-sealing the shaded portions D and E, by cutting along a two-dot chain line C3 and a two-dot chain line C4 with a cutting device (not shown), the semi-finished products are separated into individual products. Sanitary napkin 9 as a product (see Fig. 6)
To complete. The sanitary napkin 9 shown in FIG.
Is used by being wrapped around underwear and fixed to underwear, but when worn, the elastic body 2 is contracted so that both sides of the center are curved to conform to the wearer's body shape, and the wearing position does not shift.

In the above-described embodiment, when the strip-shaped elastic body 3 is manufactured, when the wing material (nonwoven fabric) 1 is folded in two, the wing portion w is bent at a position where the center line is displaced.
Although the elastic body 2 is positioned within the width of the napkin body 4 (below the top sheet 7) with a part of the wing part as a single layer, the wing material (nonwoven fabric) 1 is folded in about the center line to form a wing part. All of w may have two layers, and as shown in FIGS. 7 and 8, the bent end side of the wing material (nonwoven fabric) 1 is positioned within the width of the napkin body 4 (below the top sheet 7). The object of the present invention can be achieved even if the elastic body 2 is positioned at the wing portion w.

Next, referring to FIGS. 9 to 14, the second invention of the present application will be described in detail based on an embodiment. First Step Referring to FIG. 9, continuously supplying the elastic body 2 above the nonwoven fabric 1 in the same direction as the nonwoven fabric 1 with a tension of about 1 to 2 times is the same as the first invention. However, since there is no wing portion, the width of the nonwoven fabric 1 is narrower than that of the first invention. Second step Referring to FIG. 10, an adhesive (hot melt) is applied to the folded portion.
After applying MH thinly by spiral spray, etc.,
The elastic body 2 is folded in two and folded, and the folded portion is pressed to complete the band-shaped elastic member 3a having no wing portion.

Third Step Referring to FIG. 11, the strip-shaped elastic member 3a produced in the above step is cut into a required length by a cutter 13 and an adhesive (hot melt) coating device 14 which are arranged to face the roll 12. While cutting and applying adhesive (hot melt) to
The roll 11 and the roll 12 allow the main line 10
It is supplied to the lower side of the napkin body 4 which is being transported. The band-shaped elastic member 3 having a predetermined size, which is pressed between the press roll 15 and the roll 12, which are arranged so as to face the roll 12, is attached to the napkin body 4 at predetermined positions on both sides of the center of the napkin body 4. To be In addition, as shown in FIG. 12A, the supply mechanism of the belt-shaped elastic members 3 is a double unit, and the belt-shaped elastic members 3 are simultaneously supplied to the left and right symmetrical positions of the napkin body 4.

Fourth Step Referring to FIGS. 12 and 13, as in the first invention, PE
By supplying the back sheet 5 of the sheet to the back surface side of the mat layer 6 of the napkin body 4 to which the strip-shaped elastic member 3a is attached by the roll 16 and the roll 17, (a) of FIG.
And the semi-finished product 8a shown in (b) is completed.

Fifth Step Referring to FIG. 14, the semi-finished product 8a shown in FIG. 13 is cut along a two-dot chain line C1 and a two-dot chain line C2 by an are cutter (not shown), and then by a sealing device (not shown). After end-sealing the shaded portions A and B, and end-sealing the shaded portions D and E, use a cutting device (not shown) to form a two-dot chain line C3, 2
By cutting along the dotted chain line C4 to separate the semi-finished products into individual products, the sanitary napkin 9a as a product (see FIG.
(See 4) is completed. Sanitary napkin 9 as the product
Although a wing portion does not exist in a, the center side portions of the napkin body 4 are curved inward by the elastic bodies attached to the center side portions of the napkin body 4, so that the napkin body 4 is deformed to fit the wearer's body shape. Has good adhesion to the body and clothes.
The sanitary napkin 9a of FIG.
Due to the contraction, both sides of the center are curved to conform to the wearer's body shape, and the wearing position is not displaced.

[0014]

The sanitary napkin manufactured according to the present invention has elastic bodies attached to the central both sides of the back side of the napkin body to deform the central both sides of the napkin body along the wearer's body shape. By preventing the sanitary napkin from slipping while wearing it, it is possible to reliably maintain the sanitary napkin at a predetermined position that locally opposes, and reliably absorb menstrual blood and excrement and attach it to underwear. Never. In the first invention, the elastic body 2 is attached to the napkin body 4 by arranging the wing part w on the side of the napkin body 4 and attaching the wide band-shaped elastic member 3 to the lower side of the napkin body 4. Therefore, the manufacturing process of the sanitary napkin containing an elastic body can be simplified, and the band-shaped elastic member can be cut to a predetermined size and attached to the lower side of the napkin body to eliminate material loss of the elastic body, There is an effect that the manufacturing cost can be reduced.

In the second invention of the present application, the band-shaped elastic member 3 has a width sufficient to be mounted on both sides of the center of the napkin main body, so that the wing-forming portion in the first invention is eliminated and the material cost is reduced. There is an effect that can be reduced.

[Brief description of drawings]

 Method for manufacturing sanitary napkin with elastic body

FIG. 1 shows an embodiment of a method for manufacturing an elastic body-containing sanitary napkin according to the first aspect of the present invention, and is a schematic view of the first step.

FIG. 2 is a schematic diagram of the second step as well.

FIG. 3 is a schematic diagram of the same third step.

FIG. 4 is also a schematic view of the fourth step, in which FIG. 4A is a plan view and FIG. 4B is a longitudinal sectional view taken along S1-S1 of FIG.

FIG. 5 is a schematic diagram of the fifth step as well.

FIG. 6 is a plan view showing a product according to the first invention.

FIG. 7 is a plan view showing a product according to a second embodiment of the first invention of the present invention.

8 is a vertical cross-sectional view taken along a cutting line across the center of the plan view of FIG.

FIG. 9 is a schematic view of a first step similar to FIG. 1 of the first invention of the present invention showing an embodiment of the method for producing an elastic body-containing sanitary napkin of the second invention of the present invention.

FIG. 10 is a schematic diagram of a second step similar to FIG.

11 is a schematic diagram of a third step which is also similar to FIG.

12 is a schematic view of a fourth step similar to FIG. 4, in which FIG. 12A is a plan view and FIG. 12B is a longitudinal sectional view taken along S2-S2 of FIG.

FIG. 13 is a schematic view of a fifth step similar to FIG.

FIG. 14 is a plan view showing a product according to the second invention.

[Explanation of symbols]

 1 Wing Part Material (Nonwoven Fabric) 2 Elastic Body 3 Wide Band Elastic Member 3a Band Elastic Member 4 Napkin Body 8 Semi-finished Product 9 Product of the First Invention (Sanitary Napkin with Elastic Body) 9a Product of the Second Invention (with Elastic Body) Sanitary napkin) w Wing part w

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Claims (4)

[Claims] 1. A step of continuously supplying an elastic body 2 above a wing portion material 1 under a tension, and a step of folding the wing portion material 1 and folding the elastic body 2 to partially Wide band-shaped elastic member 3 serving as the wing portion w
And a step of forming the wide band-shaped elastic member 3 into a predetermined size and supplying the strip-shaped elastic member 3 to the lower sides of the central napkin body 4 so that the wing portion w is positioned on the side of the napkin body 4 to form the wide band. The step of attaching the strip-shaped elastic member 3 to the lower side of the napkin body 4, and the back sheet 5 is supplied and attached to the crepe side of the mat layer 6 of the napkin body 4 to which the wide band-shaped elastic member 3 is attached to attach the back sheet 5 to the semi-finished product. 8 is completed, and the semi-finished product 8 of the above step is cut into a predetermined shape, and
A step of separating the semi-finished product 8 into individual products by end-sealing and side-sealing, and a method for producing a sanitary napkin containing an elastic body, the method comprising: 2. An elastic body-containing physiology according to claim 1, wherein the supplying mechanism of the wide band-shaped elastic member 3 is two in series, and the wide band-shaped elastic member 3 is simultaneously supplied to the left and right symmetrical positions of the napkin body 4. Napkin manufacturing method. 3. A strip-shaped elastic member 3a is formed by continuously supplying an elastic body 2 under tension on the nonwoven fabric 1, and folding the nonwoven fabric 1 into two to fold the elastic body 2. A step of cutting the band-shaped elastic member 3a into a predetermined size, locating the band-shaped elastic member 3a within the width of the napkin body 4 and supplying the napkin body 4 to the lower side of both sides of the napkin body 4, and affixing to the lower side of the napkin body 4. And a step of supplying the back sheet 5 to the back surface of the mat layer 6 of the napkin body 4 to which the strip-shaped elastic member 3a is attached and attaching the back sheet 5 to complete the semi-finished product 8, and cutting the semi-finished product 8 of the step into a predetermined shape. Along with
And a step of separating the semi-finished product 8 into individual products by end-sealing and side-sealing, and a method for producing a sanitary napkin containing an elastic body, the method comprising: 4. The band-shaped elastic member 3a is provided at two symmetrical positions of the napkin body 4 by using two supply mechanisms for the band-shaped elastic member 3a.
The method for producing a sanitary napkin containing an elastic body according to claim 3, wherein the sanitary napkin is supplied simultaneously.