JPH08308874A - Tape base material for absorptive article - Google Patents

Abstract

PURPOSE: To provide a tape base material for an absorptive article by which the absorptive article can be easily manufactured. CONSTITUTION: In a tape base material which has a top sheet 2, a back sheet 3 and an absorptive body 4 and is fixed to the reverse of a sanitary napkin 1 substantially formed in a longitudinally long shape and is used to form a fixing tool 10', it is a long size shape, and has a pressure sensitive adhesive part arranged by continuously applying a pressure sensitive adhesive at least to a part in its width direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape base material for absorbent articles such as sanitary napkins and incontinence pads that facilitate the production of absorbent articles having a fixture.

[0002]

2. Description of the Related Art Conventionally, a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorber interposed between these sheets have been used to There have been proposed various absorbent articles such as sanitary napkins and incontinence pads formed in a vertically long shape and having a fixing device for fixing the absorbent article to the crotch portion of the underwear on the back surface thereof. The fixture is formed by attaching a separate tape base material for forming the fixture to the back surface of the central absorbent body part. As the tape base material, a tape base material in which a surface of a tape material having a predetermined size is subjected to a release treatment and an adhesive is applied to form a release portion and an adhesive portion, or a tape material having a predetermined size is used. A tape base material having a peeling portion and an adhesive portion formed by applying a peeling treatment and an adhesive coating on the surface after being adhered to the back surface of the absorbent article was used, but a tape substrate having more excellent operability and the like was used. At present, there is a demand for the development of materials.

Therefore, an object of the present invention is to provide a tape base material for a novel absorbent article, which is a tape base material for an absorbent article which facilitates the production of the absorbent article.

[0004]

The present invention has a liquid-permeable front surface portion, a liquid-impermeable back surface portion, and a liquid-retaining absorber interposed between the front surface portion and the back surface portion, A tape base material, which is fixed to the back surface of a substantially vertically formed absorbent article and is used to form a fixture for fixing the absorbent article to a crotch portion of underwear, wherein the tape base material is an elongated shape. By providing a tape base material for an absorbent article, which is characterized in that it has an adhesive portion provided by continuously applying an adhesive agent on at least a part of its width direction.
The above object is achieved.

The present invention also provides a method of manufacturing an absorbent article, characterized in that the tape base material is cut in the width direction thereof and fixed to the back surface of the absorbent article. .

[0006]

The tape base material of the present invention has an elongated shape and has a peeling portion in the central portion and an adhesive portion on the left side portion and the right side portion. The size of the fixture can be easily adjusted by cutting it into a desired size according to the above, and the manufacturing of the absorbent article can be facilitated.

[0007]

The tape substrate for absorbent articles of the present invention will be described in detail below with reference to the accompanying drawings.

(First Embodiment) Referring to FIGS. 1 to 5,
A first embodiment of the present invention will be described. The first embodiment is an embodiment showing a tape base material having a peeling portion provided in the central portion and folded and folded in the shape of a double door. FIG. 1 is a partially cutaway perspective view showing a sanitary napkin as an absorbent article in which a fixture is formed by the tape base material of the present invention, and FIG. 2 shows an adhesive portion in the fixture shown in FIG. FIG. 6 is an enlarged plan view showing a state in which a peeling portion is peeled off.
FIG. 3 is a perspective view showing the tape base material of the present invention.
FIG. 5 is a perspective view showing a state in which the adhesive portion and the peeling portion in the tape base material shown in FIG. 3 are adhered, and FIG. 5 is a schematic perspective view showing a mode of making a fixture with the tape base material shown in FIG. 4. It is a figure.

First, referring to FIGS. 1 and 2, a sanitary napkin in which a fixing member is formed of the tape base material of the present invention and the fixing device will be described. The sanitary napkin 1 shown in FIG. 1 has a surface sheet 2 as a liquid-permeable surface portion,
It has a back sheet 3 as a liquid impermeable back surface and a liquid-retaining absorber 4 interposed between these two sheets, and is formed substantially vertically, and on the back surface of the sanitary napkin 1, The tape base material of the present invention is fixed to form a fixture 10 'for fixing the sanitary napkin 1 to the crotch portion of the undergarment.

More specifically, the above sanitary napkin 1
Has a generally known structure, and the top sheet 2, back sheet 3 and absorber 4 are each formed of a known material. In addition, the fixture 10 '
Is divided into a left side portion 11 ', a central portion 12' and a right side portion 13 ', and a peeling portion 14' (see FIG. 2) of the central portion 12 ', the left side portion 11' and the right side portion 13 '. Adhesive part 1
5'and are adhered to each other in a peelable manner.

Then, the left side portion 1 of the fixture 10 '.
1'and the right side portion 13 'are peeled off in the directions of the arrows shown in FIG. 1 to separate the adhesive portion 15' and the peeling portion 14 ', and the state shown in FIG. 2 is obtained. A sanitary napkin can be used by adhering the adhesive portion 15 'to the. In addition, the fixture 10 '
Is fixed to the back surface of the sanitary napkin 1 (the surface of the back sheet 3) by heat sealing or an adhesive.

Thus, the tape base material 10 of the present invention is used for forming the above-mentioned fixture, and has an elongated shape as shown in FIG. 3, and at least a part in the width direction thereof. , An adhesive part 1 provided by continuously applying an adhesive
Have 5.

More specifically, the tape base material 10 has a left side portion 11, a central portion 12 and a right side portion 1 in the width direction thereof.
The central portion 12 has a peeling portion 14 formed on the surface thereof by a peeling treatment, and the left side portion 11 is divided into three parts.
The right side portion 13 has an adhesive portion 15 on the surface thereof.

Further, the left side portion 11 and the right side portion 13
Are folded in a double door shape so as to contact with the central portion 11, and the peeling portion 14 and the adhesive portion 15 are peelably adhered to each other. Also,
The peeling portion 14 is formed by peeling the surface of the tape film.

Examples of the material constituting the tape base material 10 (the constituent material of the tape film) include polypropylene, polyester, polyethylene, polyvinyl alcohol, non-woven fabric, paper and composite materials thereof.

The peeling treatment can be carried out by applying a peeling treatment agent on the tape film or by sticking a peeling tape on the tape film. The peeling treatment agent or the peeling tape used at this time is used. As the release agent component of
A silicone resin type, a fluorine resin type, an octadecyl isocyanate type, or the like is preferable. Further, in particular, the release treatment is performed by using a silicone resin type as the release treatment agent, applying the release treatment agent and heating or drying, or spraying with a spray to form a thin film. It is preferable to carry out.

As the pressure-sensitive adhesive forming the pressure-sensitive adhesive portion 15, a rubber-based pressure-sensitive adhesive, a silicone-containing rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, a silicone-containing acrylic pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive or the like is used. . Examples of the rubber-based adhesive include natural rubber-based, styrene-butadiene-based, and polyisobutyl-based adhesives. Also,
Examples of the silicone-containing rubber-based pressure-sensitive adhesive include pressure-sensitive adhesives obtained by adding or adding silicone to the rubber-based pressure-sensitive adhesive. Examples of the acrylic pressure-sensitive adhesive include general pressure-sensitive adhesives containing an acrylic polymer as a main component. Examples of the silicone-containing acrylic pressure-sensitive adhesive include pressure-sensitive adhesives obtained by adding or adding silicone to the acrylic pressure-sensitive adhesive. Examples of the silicone-based pressure-sensitive adhesive include general silicone-based pressure-sensitive adhesives containing silicone rubber as a main component.

The ratio of the length L of the left side portion 11 to the length M of the central portion 12 and the length N of the right side portion 13 is L
It is preferable that (N): M = 1: 2 to 1: 1. The width K of the tape base material is preferably 10 to 80 mm, more preferably 30 to 60 mm. If the width is less than 10 mm, the fixing force is small and the wing does not function, and if it exceeds 80 mm,
Since the fitting property to underwear is deteriorated, it is preferably within the above range.

In the tape base material of the present invention, as shown in FIG. 3, an adhesive is applied to the left side portion 11 and the right side portion 13 of the base material 10 having the central portion 12 preliminarily subjected to a peeling treatment, and the left side portion 11 The right side portion 13 and the right side portion 13 may be folded so as to come into contact with the central portion 12, respectively, and may be rolled up into a tape shape or the like so as to have the form shown in FIG.

The tape substrate 10 of the present invention is shown in FIG.
As shown in FIG. 5, the adhesive portion 15 is usually adhered to the peeling portion 14 to protect the adhesive portion 15. When used, as shown in FIG. 5, cut into a desired width, The fixture 10 'can be used for use. That is, in order to manufacture the above sanitary napkin 1 using the tape base material of the present invention (to carry out the method for manufacturing an absorbent article of the present invention), the tape base material 10 in the width direction thereof is used. This can be performed by cutting the sheet toward the desired width and then fixing it to the back surface of the sanitary napkin 1 as the absorbent article. The lengths l and n of the adhesive 15 can be appropriately adjusted so as to contact the peeling portion 14 when folded in the central portion.

As described above, since the tape base material of the present invention can be made to have a desired width according to the size of the sanitary napkin or the like when used, the sanitary napkin can be easily manufactured. can do.

(Second Embodiment) Next, a second embodiment of the tape base material of the present invention will be described with reference to FIGS. The tape base material of the present embodiment is an embodiment showing a tape base material in which a peeling portion is provided in the central portion and which is folded in three. FIG. 6 is a perspective view showing another embodiment of the tape base material of the present invention, and FIG. 7 shows a state in which the tape base material shown in FIG. FIG. 8 is a plan view showing the front surface side, and FIG. 8 is a plan view showing the back surface side in a state in which the tape base material shown in FIG. 6 is cut along a chain line portion and both left and right side portions are peeled off. Note that the description in the above-described first embodiment is appropriately applied to points that are not described in detail.

The tape base material 10 of this embodiment shown in FIG.
The left side portion 11 and the right side portion 13 have adhesive portions 15a and 15b on their surfaces, respectively.
However, the peeling portion 14b formed on the back surface by the peeling process
And the adhesive portion 15a of the left side portion 11 and the central portion 12
Of the left side portion 11 and the right side portion 13 on the central portion 12 so that the peeling portion 14a of the left side portion 11 and the peeling portion 14b of the left side portion 11 and the adhesive portion 15b of the right side portion 13 contact each other. It is folded in three in order.

More specifically, the tape substrate 1 of this embodiment
0 indicates the left side portion 1 in the width direction as shown in FIG.
1, the central portion 12 and the right side portion 13, the central portion 12 has a peeling portion 14a formed as described above, the left side portion 11 and the right side portion 13 respectively adhere to the surface thereof. It has parts 15a and 15b. Further, as shown in FIG. 8, the left side portion 11 has a peeling portion 14b formed by a peeling process on the back surface thereof, and as shown in FIG. 6, the left side portion 11 has an adhesive portion 15a and the central portion. 12 is in contact with the peeling portion 14a and the peeling portion 14 of the left side portion 11
The left side portion 11 and the right side portion 13 are folded in three in this order on the central portion 12 so that b and the adhesive portion 15b of the right side portion 13 come into contact with each other. As a result, in the tape base material of the present embodiment, the adhesive portion 15a of the left side portion 11 is releasably adhered to the peeling portion 14a of the central portion 12, and the adhesive portion 15b of the right side portion 13 is The peeling portion 14b of the left side portion 11 is peelably adhered to protect the adhesive portions 15a and 15b.

In the present embodiment, the left side portion 1
The ratio of the length L ′ of 1 to the length M ′ of the central portion 12 and the length N ′ of the right side portion 13 is L ′ (N ′): M ′ = 1: 2.
It is preferably in the range of 1: 1. Also, the adhesive 15
The lengths l ′ and n ′ of can be appropriately adjusted so as to contact the peeling portion 14 when folded in the central portion.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIG. The third example is an example showing a tape base material that is provided with adhesive parts on the surfaces of the left side part, the central part, and the right side part, respectively, and is folded in the shape of a double door. is there. Here, FIG. 9 is a perspective view showing the tape base material of the third embodiment. The structure of the tape base material of this embodiment is the same as that of the first embodiment shown in FIGS. Further, the points which are not described in detail are the same as those in the first embodiment described above.

As shown in FIG. 9, the tape base material 10 of this embodiment is divided into a left side portion 11, a central portion 12 and a right side portion 13 in the width direction thereof. 1
1, the central portion 12 and the right side portion 13 have adhesive portions 15 and 15 'on their surfaces, respectively.

Further, the left side portion 11 and the right side portion 13
Are folded so as to come into contact with the central portion 12 to form a double-door structure, and the central portion 12, the left side portion 11 and the right side portion 13 are adhered to each other in a peelable manner. That is, the tape base material 10 of the present embodiment includes the adhesive portion 15 ′ provided on the surface of the central portion 12,
The left side portion 11 and the right side portion 13 are adhered so as to come into contact with the adhesive portions 15, and the adhesive portion 15 ′ and the adhesive portion 15 are formed by applying mutually removable adhesives. Has been done.

As the adhesive forming the adhesive portion 15 and the adhesive portion 15 ', the above-mentioned rubber adhesive, silicone-containing rubber adhesive, acrylic adhesive, silicone-containing acrylic adhesive and silicone adhesive are used. Although an agent can be used, the adhesive portion 15 and the adhesive portion 15 '
Either one of them must be formed using a silicone-containing rubber-based pressure-sensitive adhesive, a silicone-containing acrylic-based pressure-sensitive adhesive, or a silicone-based pressure-sensitive adhesive. Further, both may be formed by using a silicone-containing rubber adhesive, a silicone-containing acrylic adhesive, or a silicone-based adhesive. And, it is preferable that one is formed of the above-mentioned rubber-based adhesive and the other is formed of the above-mentioned silicone-containing rubber-based adhesive or silicone-containing acrylic-based adhesive.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG. The fourth example is an example showing a tape base material in which adhesive portions are provided on the surfaces of the left side portion, the central portion, and the right side portion, respectively, and which is folded in three. .

Here, FIG. 10 is a perspective view showing the tape base material of the fourth embodiment, and FIG. 10A is a perspective view showing the tape base material of the fourth embodiment. 10 (b) is
It is a top view which shows the surface side in the state which cut | disconnected the tape base material shown in FIG.10 (a) by a chain line part, and also peeled off both right and left sides, and FIG.10 (c) shows in FIG.10 (a). It is a top view which shows the back surface side in the state which cut | disconnected the tape base material in the chain line part, and also peeled off both right and left side parts. The structure of the tape base material of this embodiment is the same as that of the second embodiment shown in FIGS. In addition, points that are not described in detail are the same as those in the first and second embodiments described above.

Thus, the tape base material 10 of this embodiment is divided into a left side portion 11, a central portion 12 and a right side portion 13 in the width direction thereof as shown in FIGS. The left side portion 11, the central portion 12 and the right side portion 13
Are attached to the surface of the adhesive parts 15a, 15c, 15b, respectively.
Have.

Further, in the tape base material 10, the left side portion 11 has a peeling portion 1 formed on the back surface thereof by a peeling process.
4b, so that the adhesive portion 15a of the left side portion 11 and the peeling portion 15c of the central portion 12 come into contact with each other and the peeling portion 14b of the left side portion 11 and the adhesive portion 15b of the right side portion 13 come into contact with each other. The left side portion 11 and the right side portion 1 on the central portion 12.
It is folded in three in the order of three.

The adhesive portions 15a and 15c are formed by applying mutually removable adhesives, as in the third embodiment. The adhesive section 1
As the adhesive forming 5a and the adhesive portion 15c,
It is the same as the adhesive described in the third embodiment,
As a preferred combination, it is preferable that the adhesive portion 15a is formed of the rubber adhesive and the adhesive portion 15c is formed of the acrylic adhesive, the silicone adhesive or the silicone-containing rubber adhesive. Further, it is preferable that the adhesive part b is formed of the same adhesive as the adhesive part 15a.

The tape base material for absorbent articles of the present invention is not limited to the above-described embodiments shown in FIGS. 1 to 5, and may be appropriately changed without departing from the spirit of the present invention. Is possible.

[0036]

The tape base material for absorbent articles of the present invention comprises:
A novel tape base material for absorbent articles, which facilitates the production of absorbent articles.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a sanitary napkin in which a fixing member is formed of a tape base material according to a first embodiment of the present invention.

FIG. 2 is an enlarged plan view showing a state in which an adhesive portion and a peeling portion in the fixture shown in FIG. 1 are peeled off.

FIG. 3 is a perspective view showing a tape base material of the first embodiment.

FIG. 4 is a perspective view showing a state in which an adhesive portion and a peeling portion of the tape base material shown in FIG. 3 are adhered to each other.

FIG. 5 is a schematic perspective view showing a mode of producing a fixture with the tape base material shown in FIG.

FIG. 6 is a perspective view showing another embodiment of the tape base material of the second embodiment of the present invention.

FIG. 7 is a plan view showing the front surface side of the tape base material shown in FIG. 6 cut along a chain line portion and the left and right side portions are peeled off.

8 is a plan view showing the back surface side in a state where the tape base material shown in FIG. 6 is cut along a chain line portion and both left and right side portions are peeled off.

FIG. 9 is a perspective view showing a tape base material of a third embodiment.

10 is a perspective view showing a tape base material of a fourth embodiment, and FIG. 10 (a) is a perspective view showing a tape base material of the fourth embodiment, and FIG. b) is shown in FIG.
It is a plan view showing a front surface side in a state in which the tape base material shown in FIG.
FIG. 10C is a plan view showing the back surface side in a state where the tape base material shown in FIG. 10A is cut at a chain line portion and both left and right side portions are peeled off.

[Explanation of symbols]

 1 Sanitary Napkin 2 Top Sheet 3 Back Sheet 4 Absorber 10 Tape Base Material 11 Left Part 12 Central Part 13 Right Part 14 Peeling Part 15 Adhesive Part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Harumi Tezuka, 2606, Akao, Kaicho, Haga-gun, Tochigi Prefecture, Kao Institute of Stock Companies (72) Minoru Nakanishi, 2606, Akabane, Kai-cho, Haga-gun, Tochigi, Institute of Kao Corporation

Claims (7)

[Claims] 1. A liquid-permeable front surface portion, a liquid-impermeable rear surface portion, and a liquid-retaining absorber interposed between the front surface portion and the rear surface portion, and formed substantially vertically. In the tape base material fixed to the back surface of the absorbent article and used for forming a fixture for fixing the absorbent article to the crotch portion of the underwear, the tape base material has an elongated shape, and at least in the width direction thereof. A tape base material for an absorbent article, characterized in that it has an adhesive portion provided by partially applying an adhesive continuously. 2. The tape base material is divided into a left side portion, a central portion and a right side portion in the width direction thereof, and the central portion has a peeling portion formed by a peeling treatment on the surface thereof. The tape base material for an absorbent article according to claim 1, wherein the left side portion and the right side portion each have an adhesive portion on a surface thereof. 3. The tape base material is divided into a left side portion, a central portion and a right side portion in the width direction thereof, and the left side portion, the central portion and the right side portion each have an adhesive portion on the surface thereof. The tape base material for an absorbent article according to claim 1, comprising: 4. The tape base material for absorbent articles according to claim 1, wherein the pressure-sensitive adhesive is a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, or a silicone-based pressure-sensitive adhesive. 5. The left side portion and the right side portion are folded so as to come into contact with the central portion, respectively, and the central portion and the left side portion and the right side portion are adhered to each other in a peelable manner. A tape base material for an absorbent article according to claim 1. 6. The left side portion and the right side portion each have an adhesive portion on a surface thereof, and one of the left side portion and the right side portion has a peeling portion formed by a peeling treatment on a back surface thereof. Then, the one adhesive part and the central part are in contact with each other, and the one peeling part and the other adhesive part are in contact with each other, and the one part and the other part are folded in three in this order. The tape base material for an absorbent article according to claim 1, which is folded over. 7. A method for manufacturing an absorbent article, comprising cutting the tape base material according to claim 1 in a width direction thereof and fixing the tape base material to a back surface portion of the absorbent article.