JP3031488B2 - Remountable tape structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a re-attachable tape structure, and is generally used in a detachable system using a pressure-sensitive adhesive tape, and is used for clothes, stationery and other fields requiring detachable, especially disposable diapers and aprons. , A re-attachable tape structure useful for napkins.

[0002]

2. Description of the Related Art Conventionally, references relating to a detachable system for disposable diapers include U.S. Pat. Nos. 2,714,889, 3,221,783 and 36202.
No. 17 is known.

[0003] However, since these tapes are detached from the diaper main body, the diapers may be damaged when the diaper is detached, which is not preferable.

[0004] Further, as a document characterized by using a target tape, there is US Pat. No. 3,951,149.
No., 3987783, 3999540, 40208
No. 42 and JP-A-60-146002. However, since these desorb on the target tape,
The problem of damaging the diaper when attaching / detaching the diaper has been solved, but there is a risk that the baby may swallow the target tape, or the tape structure may be a zipper tape, a release tape and three types of tape, or a synthetic tape. Is required, which is not preferable in terms of work and cost.

[0005] Therefore, at present, instead of the target tape, a structure in which a tape zone previously bonded to the front surface of the diaper is provided is provided.

[0006]

In view of the above, the inventor of the present invention has obtained a re-attachable tape structure which is simple in structure and advantageous in terms of workability and cost without damaging the diaper when attaching and detaching the diaper. As a result of investigations, the present invention has been achieved as a tape structure useful not only in diapers but also in fields such as napkins and aprons, clothing and stationery that require detachment.

That is, the tape structure according to the present invention is characterized in that the tapes A and B, which are preliminarily fixed to each surface of the adherends to be joined on one surface thereof, are both tapes A and B.
2 is substantially the same shape, one surface of tape A and B are adhesive forms a securable to an adherend across the tape, the other surface of the tape A and B of the substrate, and an adhesive are species or al formation, and opposed surfaces of the tape when the overlapped two tapes a and B, as a combination of viscosity Chakuzai a substrate, both of the tapes a, B and the other surface of each other, respectively It is characterized in that it can be joined or reattached between them.

[0008]

The tape structure of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a structural example of a tape A and a tape B.

In FIG . 1, 1 is a tape A, 2 is a tape
Indicates B, 1 tape A is plastic film, non-woven
Adhesive layer 1A on the entire surface of one side of substrate 1B such as cloth or foam
Is formed, and the other surface is provided with an adhesive layer
A ′ is formed, and an adherend is formed by the pressure-sensitive adhesive layer 1A.
To be fixed. 1A 'is a joint between tape A and tape B,
An adhesive layer used for attachment.

On the other hand, the second tape B is used as a base material 2B.
Soft and stiff of plastic, nonwovens and foam
What is used, one surface thereof is provided with a pressure-sensitive adhesive layer 2A only in the central part, desorption of the first tape A, is configured to re-mounting is possible, on the other surface, and the adherend Stuck
Adhesive layer 2A 'is provided.

[0012] in FIG. 2 (a) ~ (c) shows the manner of attaching the synthetic tape E consisting of tape A and tape B to diaper body 3, to sandwich the composite tape E in the diaper 3,3, press, heat The diaper is fixed to the diaper by heat bonding, adhesive or the like. Thereby, the synthetic tape E, that is, tape A and tape B
Are fixed to the diapers 3, 3, respectively, and the tape A and the tape B can be reattached as appropriate. After peeling, the tape A and the tape B can be joined together again.

FIG. 3 shows a state in which one tape A and two tapes B are attached to the diaper 3 and used during joining and detachment. The tape A and the tape B are bonded to the diaper in advance. However, the tape A and the tape B can be sandwiched with the diaper while being laminated. In this case, a synthetic tape E obtained by laminating a tape A and a tape B as shown in FIGS. 4 and 5 may be used. Note that reference numeral 4 in FIG. 5 denotes a release paper as a separator used as needed.

Further, the tape structure of the present invention, rather than being used only to a disposable diaper, can also be applied using the clothing and envelopes bags, etc., as shown in FIGS. 8 and 9. FIGS. 6 and 7 show a shape in which the tape A and the tape B are stuck together, and the portion where the peeling is started is made thinner to make it easier to peel.

Next, examples of the tape base material used in the present invention include those having a two-layer structure such as polyethylene and polypropylene, and those based on polyester. In addition, the above-mentioned foams and nonwoven fabrics are also suitable in terms of softness. It is. The thickness of the tape is not particularly limited, but is preferably in the range of 2 μm to 3 mm in view of the fact that the thicker one is easier to peel off.

As the pressure-sensitive adhesive, rubber-based and acrylic-based pressure-sensitive adhesives are used, and styrene-ethylene-butadiene-
Styrene block copolymer (hydrogenated SBS), styrene-
Styrene rubber-based resin pressure-sensitive adhesives such as isoprene-styrene block copolymer and styrene-butadiene-styrene block copolymer are preferably used alone or as a blend, and among them, styrene-ethylene-butadiene-styrene block copolymer is preferred. Coalescing is preferred.

According to the present invention, the tape A and the tape B can be repeatedly attached and detached between the tape A and the tape B by adopting bonding or reattachment of the surfaces other than the surface to be fixed to the adherend of the tape A and the tape B. Thus, the tape A or the tape B can be attached to the top sheet in the disposable diaper, the back sheet, or the portion where the top sheet and the back sheet are overlapped.

The fixing of the tape A and the tape B to the adherend may be performed through an adhesive or by heat bonding.

Further, in this tape structure, in order to facilitate attachment and detachment of the tape A or the tape B, one end or both ends of the tape A and the tape B are free from an adhesive or an adhesive. It is preferable that a tab piece is provided at one end or both ends of the tape A and the tape B.

As described above, the joining or reattachment of the tape A and the tape B is as follows: (1) The adhesive surface of the tape A and the back surface of the tape B (a release agent treatment is applied if necessary). (2) The back surface of the tape A (release processing is performed if necessary) and the adhesive surface of the tape B. Combination is used.

In the present invention, the tape A and the tape B can be used in place of each other.
The pressure-sensitive adhesive layer and the release agent layer formed on one or both sides of the tape A or B are not limited to the entire surface thereof, and may be in a pattern form. The adhesive strength between the tapes A and B is preferably 10 to 5000 g / 25 mm.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments.

Embodiment 1

An adhesive comprising 70 parts by weight of a styrene-ethylene-butadiene-styrene block copolymer (manufactured by Ciel) and 30 parts by weight of a hydrogenated terpene resin is applied to a 40 μm thick polypropylene film in a 50 μm thickness and dried. Tape A was obtained.

On the other hand, a polyester film having a thickness of 25 μm was prepared and used as a tape B. Then, the tape A as the disposable diaper 1 in FIG. 3 and the tape B as the disposable diaper 2 were fixed with an adhesive, respectively.
It was 50 g / 25 mm.

Embodiment 2

[0027] 1 locations shown in FIG. 3 instead of the tape A SIS
An adhesive was directly applied to a paper diaper in a thickness of 40 μm from 80 parts by weight of an equal mixture of resin and SBS resin and 50 parts by weight of petroleum resin.

On the other hand, polyethylene and polypropylene 70
A long-chain alkyl-type release agent was applied on a 100 μm thick film having a ratio of 30/30 to form a tape B, which was fixed at two places in FIG. 3 and an adhesive layer formed on the paper diaper. The peeling force after joining was 380 g / 25 mm.

Embodiment 3

An acrylic emulsion resin was applied on a 50 μm thick polyester film to a thickness of 12 μm to obtain a tape A. On the other hand, a tape was obtained by applying a silicone release agent to a polypropylene nonwoven fabric (weighing 50 g) obtained by laminating polyethylene to a thickness of 25 μm. These were fixed to 1 and 2 in FIG. 3 and the peeling force after joining them was examined.
It was 0 g / 25 mm.

The tapes A and B obtained in Examples 1 to 3 above
Was used as disposable diaper zipper tape by 10 mothers, making it easy to put on and take off,
When a test such as fit was performed, 9 out of 10 respondents answered that it was good.

[0032]

As described above, according to the tape structure of the present invention, there are advantages that only two types of tapes are required, and if this tape is a synthetic tape, the diaper producer can easily make the tape.

Further, as the diaper becomes a pants type in the future, the tape of the present invention which can be reattached to the pants type can be used. Also, there is an advantage that it can be peeled off with one touch as compared with the conventional tape.

In particular, when the tape of the present invention is used in a diaper, the diaper moves because the diaper moves because the diaper overlap portion is fixed over the entire area of the tape because the tape is incorporated into the diaper body. There is an effect that it is hard to come off.

Further, the tape structure of the present invention
Adhesive and base material of tape B, base material of tape A and tape B
Because the adhesives can be overlapped with each other,
Compared to a tape structure that has an adhesive only on one tape,
Variations in adhesive strength due to variations in the tape overlap position
Less likely to occur and the designed tape adhesive strength is in actual use
, It is easy to reproduce.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a tape structure of the present invention.

FIGS. 2A to 2C are explanatory views showing an embodiment of a method of using the tape of the present invention in a disposable diaper.

FIG. 3 is an explanatory view in which the tape structure of the present invention is applied to a disposable diaper.

FIG. 4 is an explanatory view in which the tape structure of the present invention has a roll-shaped synthetic tape shape.

FIG. 5 is an explanatory view showing the tape structure of the present invention in the form of a roll-shaped synthetic tape.

FIG. 6 is a perspective view showing the shape of the tape of the present invention.

FIG. 7 is a perspective view showing the shape of the tape of the present invention.

FIG. 8 is an explanatory view in which the tape structure of the present invention is applied to clothing.

FIG. 9 is an explanatory view in which the tape structure of the present invention is applied to an envelope bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tape A 2 Tape B 3 Diaper 4 Release paper 1A Adhesive layer or adhesive layer 1A 'Adhesive layer or adhesive layer 1B Base material 2A Adhesive layer or adhesive layer 2A' Adhesive layer or adhesive layer 2B base Material 2D Pick tape piece E Synthetic tape

Claims (6)

(57) [Claims] An object to be joined is provided with a pre-
Tape A and tape B, which are fixed on one side
The tapes A and B have substantially the same shape.
On one side of B and B, an adhesive is formed and the entire tape is covered.
The other side of tapes A and B, which can be fixed to the bodyIs the base
Materials and adhesivesTwo kinds ofAnd both tapes A
When B is overlapped, the opposing surfaces of both tapes, StickyDressing
And baseLumberSo that both tapes A and B are
Joining or reattaching between the other side
Re-attachable tape structure characterized by being able to cut. 2. The substrate according to claim 1, wherein the substrate is a film, foam or non-woven fabric of polyolefin, polyester or the like.
Tape structure. 3. The tape structure according to claim 1, wherein the adhesive is a rubber-based or acrylic adhesive. 4. The rubber-based pressure-sensitive adhesive is a styrene-based styrene-
The tape structure according to claim 3, wherein the tape structure is one or a mixture of two or more of an ethylene-butadiene-styrene block copolymer, a styrene-butadiene-styrene block copolymer, and a styrene-isoprene-styrene block copolymer. 5. The tape structure according to claim 1, wherein the adhesive force between the tape A and the tape B is 10 to 5000 g / 25 mm. 6. The tape structure according to claim 1, wherein the tape structure is used for an application requiring joining and detachment such as clothing and stationery.