KR100216693B1 - Double-faced adhesive tape and fastener tape of used said tapes - Google Patents

Abstract

In the first double-sided adhesive tape (A, B) of the present invention, the first adhesive layer 2 formed by blending 0.01 to 30 parts by weight of a silicone-based polymer with respect to 100 parts by weight of an acrylic or rubber-based pressure-sensitive adhesive composition is formed on one side of the substrate. On the other side, an acrylic or rubber pressure sensitive adhesive layer is formed as the second adhesive layer 3. Thereby, even if adhesives adhere | attach, the double-sided adhesive tape which can be easily peeled and detached after that is obtained.

In the second adhesive tape of the present invention, the second adhesive layer 54 is formed on one inner surface 53a of the two overlapping inner surfaces of the tape substrate 53, and the first adhesive layer 55 is disposed on the other inner surface 53b. The second adhesive layer and the first adhesive layer are adhered to each other so that they can be peeled off to form a pressure-sensitive adhesive having a different composition, and the third adhesive layer 56 is formed on an appropriate portion of the tape base 53 other than the overlapping both sides. do. This makes it possible to improve the fixing strength without increasing the area of the tape base material.

Description

[Name of invention]

Double sided adhesive tape and fastener tape using same

[Technical Field]

The 1st aspect of this invention relates to the double-sided adhesive tape which does not need a release paper, and relates to the double-sided adhesive tape which can be easily peeled and detached after that even if adhesives adhere | attach adhesives. Such a tape is used suitably for fixing absorbent articles, such as a paper diaper and a sanitary napkin, for example.

A second aspect of the invention relates to an adhesive tape, for example, used in fastener tapes and the like for fixing the front part to the back part in a disposable diaper.

Background Technology

As a double-sided adhesive tape which does not use a separator, what applied the acrylic adhesive to one side of a support body and the rubber adhesive to the other side until now is known. However, when the applied adherend is limited or laminated, it cannot cause a change in which the peelability of the adhesives is clearly determined by the elastic modulus of the adhesive, or the like, and for example, in the acrylic adhesive, the storage property is poor, so that in articles used for a long time There are drawbacks such as not being available. In addition, the acrylic pressure-sensitive adhesive and the rubber-based pressure-sensitive adhesive, the difference in properties such as adhesive strength, heat resistance, solvent resistance is remarkable, it is inappropriate to use the rubber pressure-sensitive adhesive when the heat treatment, resin processing or use for a long time after bonding with an adhesive tape.

Moreover, as a double-sided adhesive tape which does not need a release paper, the adhesive which partially crosslinked the acrylic resin which has a carboxyl group in the side chain with an isocyanate is applied to one side of a support body, and the acrylic resin which has a hydroxyl group in the side chain is applied to the other side. Tapes coated with a melamine resin and an adhesive partially crosslinked are known (for example, Japanese Patent Laid-Open No. 54-108833). However, since the main component of the pressure-sensitive adhesive is limited to the acrylic resin, the adherend is naturally limited, and there is a disadvantage in that it is inferior in adhesion with the adhesive such as polyolefin, and there is a fear that formalin is generated because it is crosslinked by the melamine resin. It is not preferable to use it for articles.

The first object of the present invention is to solve such a problem, and it is not necessary to use a release paper by using an adhesive layer of a specific composition on one side, and peeling and desorption between the adhesive layers even when laminating tapes together. It is to provide this easy double-sided adhesive tape.

In addition, as the adhesive tape used for the fastener tape which fixes the front part to the back part in a disposable diaper, for example, as shown in FIG. 20 and FIG. Fold in a double-ply shape so that the other end portion 11b overlaps, and form the first adhesive layer 12 on the inner surface of one end portion 11a in the tape base material 11, while the other in the tape base material 11 After the release layer 13 for the first adhesive layer 12 is formed on the inner surface of the end portion 11b, the second adhesive layer (on the outer surface of the other end portion 11b on the tape substrate 11 is formed. A pressure-sensitive adhesive tape 10 formed by forming each of them is known (see Japanese Laid-Open Utility Model Publication No. 61-94536).

That is, the adhesive tape 10 is pasted on the inner surface of the back portion 5A1 in the diaper 5A via the second adhesive layer 14, and the nappies or infants are filled with the diaper 5A, and the tape The diaper by peeling one end portion 11a of the base material 11 from the other end portion 11b and attaching one end portion 11a thereof to the center tape 5A3 formed on the front portion 5A2 of the diaper 5A. The rear part 5A1 of 5A is fixed to the front part 5A2.

With such an adhesive tape, the tape substrate 11 itself serves as a release tape for the first adhesive layer 12, and it is necessary to separately arrange the release tape for protecting the first adhesive layer 12. There is no advantage in that the manufacturing process can be simplified and the cost can be reduced.

However, in the adhesive tape 10, the first adhesive layer 12 can be formed only on the inner surface of one end portion 11a of the tape base material 11, and the tape base material 11 with respect to the center tape 5A3 can be formed. Since the sticking area is small, the fixed strength with respect to the front part 5A2 of the diaper 5A is small, and accordingly, the tension force according to the longitudinal direction to the tape base material 11 according to the movement of the infant or suckling which wore the diaper 5A. This action causes the tape base material 11 to slide as shown by the dotted line in FIG. 22, not only to stretch the diaper 5A, but also to allow the other part of the tape base material 11 to be sucked by the infant or the baby (5B). ), It is easy to cause rash and inflammation.

In this regard, it is considered that the length of the tape base material 11 is increased to increase the area of the first adhesive layer 12. However, in this case, the amount of the material used to manufacture the tape base material 11 is reduced. Since it is increased, the effect of cost reduction by the unnecessary release tape is eliminated.

A second object of the present invention is to provide a pressure-sensitive adhesive tape capable of remarkably forming a fixed strength without increasing the area of the tape base material.

[Initiation of invention]

That is, according to the first aspect of the present invention, a first adhesive layer formed by blending 0.01 to 30 parts by weight of a silicone-based polymer with respect to 100 parts by weight of an acrylic or rubber-based pressure-sensitive adhesive composition is formed on one side of the substrate, and the second side is formed on the other side. The double-sided adhesive tape in which the acryl-type or rubber-based adhesive layer was formed as an adhesive layer is provided.

According to a second aspect of the present invention, one tape base material is folded in a form overlapping with two sheets, a second adhesive layer is formed on one side of both surfaces overlapped by the tape base material, and a first adhesive layer is formed on the other side. And the second adhesive layer and the first adhesive layer are formed of pressure-sensitive adhesives of different compositions such that the second adhesive layer and the first adhesive layer can be peeled off from each other, and the third adhesive layer is formed on a suitable portion of the tape base other than the overlapping both sides. Provided is an adhesive tape.

[Brief Description of Drawings]

1 is a cross-sectional view showing one example of the double-sided adhesive tape of the present invention.

2 is a cross-sectional view showing another example of the double-sided adhesive tape of the present invention.

3 is a cross-sectional view showing another example of the double-sided adhesive tape of the present invention.

4 is a cross-sectional view showing another example of the double-sided adhesive tape of the present invention.

5 is an explanatory diagram showing an example in which the double-sided adhesive tape of the present invention is used for a fastener portion of a paper diaper.

6 is an explanatory diagram showing an example of using the double-sided adhesive tape of the present invention for the fastener portion of the paper diaper.

7 is an explanatory diagram showing an example of using the double-sided adhesive tape of the present invention in a sanitary napkin.

FIG. 8 is an explanatory diagram showing an example in which the sanitary napkin shown in FIG. 7 is stored in a storage bag. FIG.

9 is an explanatory diagram showing a state in which the double-sided adhesive tape of the present invention is wound in a roll shape.

10 is an explanatory diagram showing another example of the double-sided adhesive tape of the present invention.

11 is an explanatory diagram showing another example of the double-sided adhesive tape of the present invention.

12 is a perspective view of an adhesive tape of the present invention and a wound body thereof.

13 is an enlarged sectional view taken along line II-II in FIG. 12;

FIG. 14 is an enlarged sectional view taken along III-III of FIG. 20 in a state where the adhesive tapes of FIGS. 12 and 13 are used.

FIG. 15 shows another embodiment of the adhesive tape of the present invention. FIG.

FIG. 16 shows a modified example of FIG.

17 is a view showing another example of the adhesive tape of the present invention.

18 is a view showing a state of use of the adhesive tape of FIG.

19 is a view showing another embodiment of the adhesive tape of the present invention.

20 is a perspective view of a diaper.

FIG. 21 is a sectional view in the X-X direction in FIG. 20. FIG.

FIG. 22 is a cross-sectional view along XI-XI in FIG. 20. FIG.

* Explanation of symbols for main parts of the drawings

1: Base material 2: First adhesive layer

3: 2nd adhesive layer A: Double-sided adhesive tape

B: double sided adhesive tape 4: paper diaper

C: adhesive tape 5: adhesive layer

6: sanitary napkin 7: storage bag

8: dried edge portion 51: adhesive tape

52: winding body of an adhesive tape 53: tape base material

54: second adhesive layer 55: first adhesive layer

56: third adhesive layer 5A: diaper

Best Mode for Carrying Out the Invention

The first aspect of the present invention is described below according to the drawings of the examples.

1 is a cross-sectional view showing one example of the double-sided adhesive tape (A) of the present invention, wherein the first pressure-sensitive adhesive layer 2 is formed on one side of the substrate 1 and the second pressure-sensitive adhesive layer ( 3) is formed.

In the present application, the first adhesive layer is a pressure-sensitive adhesive layer formed by blending 0.01 to 30 parts by weight of a silicone-based polymer with respect to 100 parts by weight of an acrylic or rubber-based pressure-sensitive adhesive composition.

The acrylic polymer constituting the acrylic pressure-sensitive adhesive composition which is a constituent main component of the first adhesive layer is not particularly limited, and conventionally known ones can be applied as it is, and in general, acrylic acid alkyl esters having 2 to 14 carbon atoms of alkyl groups, meta 50 weights of one or two of the acrylate alkyl esters as the main monomer The above-mentioned thing is mentioned by copolymerizing the functional group containing monomers, such as unsaturated carboxylic acid which can copolymerize the remainder with the above-mentioned ester, or the monomer for modification, such as styrene, vinyl acetate, an acrylonitrile, These 1 type Or two or more mixtures may be appropriately selected and used.

In addition, the rubber-based polymer constituting the rubber-based adhesive composition is not particularly limited, and examples thereof include natural rubber, styrene-isoprene-styrene block copolymer, styrene-butadiene-styrene copolymer, styrene-ethylene-butadiene-styrene copolymer, and the like. These can be mentioned, 1 type, or 2 or more types of these can be selected suitably and can be used.

Examples of the silicone polymer blended with the main component thereof include polydimethylsiloxane, polyorganosiloxane, and mixed modified products of these. Generally, silicone oil can be used as a main component and a suitable silicone resin can be added as a release control agent.

The compounding quantity of such a silicone type polymer is 0.01-30 weight part with respect to 100 weight part of said acrylic or rubber adhesive compositions, Preferably it is 0.5-10 weight part. When it is less than 0.01 weight part, the peeling effect with the following 2nd adhesive layer cannot be acquired, and when it exceeds 30 weight part, it is inferior and unpreferable in an adhesiveness and a persistence point.

It is presumed that, by blending such a silicone-based polymer, the silicon bleeds to the surface of all the pressure-sensitive adhesive layers over time to form a silicon film, and this silicon film has viscoelasticity and thus is adhesive.

In the present invention, the second pressure-sensitive adhesive layer is not particularly limited, and the above-described acrylic or rubber pressure-sensitive adhesive composition which is a conventional pressure-sensitive adhesive may be used.

2 is a cross-sectional view showing another example of the double-sided adhesive tape of the present invention, and is a composite double-sided adhesive tape formed by laminating two double-sided adhesive tapes of FIG. The second adhesive layer 3 of the double-sided pressure-sensitive adhesive tape A and the first double-sided pressure-sensitive adhesive tape layer 2 of the other double-sided pressure-sensitive adhesive tape B are here laminated so as to be peeled off between the layers thereof. In the present application, as well as laminating the same tape, two or more double-sided adhesive tapes having different pressure-sensitive adhesive compositions can be laminated to form a composite double-sided adhesive tape.

3 is a cross-sectional view showing another example of the double-sided adhesive tape of the present invention, wherein the first adhesive layer 2 is formed on one side of one side of the substrate 1, and the second adhesive layer 3a is formed on the remaining portion. On the other side corresponding thereto, the second adhesive layer 3b and the first adhesive layer 2 are formed, respectively.

4 is a cross-sectional view showing another example of the double-sided adhesive tape of the present invention, wherein the first adhesive layer 2 is formed on one side of one side of the substrate 1, and the second adhesive layer is formed on the remaining portion of the one side. (3a) is formed and the 2nd adhesive layer 3b is formed in the site | part of the other surface which opposes the said 1st adhesive layer 2 above.

In addition, in the double-sided adhesive tape shown in FIGS. 3 and 4, the second adhesive layers 3a and 3b may be adhesives of the same or different composition.

5 and 6 are explanatory views showing an example of using the double-sided adhesive tape A of FIG. 2 as a release tape of a paper diaper. For example, the second adhesive layer 3 of the double-sided adhesive tape A is shown. ) Is fixed to the inner surface side of the back side of the paper diaper 4, and the conventional adhesive tape C is fixed to the outer surface side as a fastener tape, and before use, the adhesive layer 5 of the adhesive tape as shown in FIG. The 1st adhesive layer 2 of the double-sided adhesive tape A is bonded together in the state which can peel between layers. And when using, a diaper can be attached by peeling adhesive tape C between adhesive layers like FIG. 6, and adhesively fixing to the front part of the paper diaper 4. As shown in FIG.

FIG. 7 is an explanatory view showing an example in which the double-sided adhesive tape A of FIG. 1 is formed inside the sanitary napkin 6, and as shown in FIG. 8, it is folded and opened in a plastic bag 7 such as polyethylene. I can receive it.

9 is an explanatory view showing a state in which the double-sided adhesive tape (A) of the present invention is wound in a roll shape, and since both the first adhesive layer 2 and the second adhesive layer 3 are made of different compositions, both adhesives It becomes easy to peel between layers of a layer, and a release paper becomes unnecessary therefore.

Moreover, in this invention, as shown to FIG. 10 and FIG. 11, the adhesive layer is made into the so-called dried edge part 8 in which the edge part of the base material 1 is not formed at least one adhesive layer which opposes. Peeling can be made easier.

Example 1

10 weight parts of addition silicone polymers (polyorganosiloxane) to 100 parts by weight of an acrylic pressure-sensitive adhesive formed by copolymerizing butyl acrylate and acrylic acid (weight ratio = 97: 3) 1 part by weight of polydimethylsiloxane), and 0.02 part by weight of a platinum catalyst were added thereto. Furnace for 60 seconds to obtain a first adhesive composition.

This first adhesive composition is 25 It is apply | coated to one side of the polyethylene terephthalate film of thickness, and the other side is apply | coated and dried the acrylic adhesive which has polybutylacrylate as a main component as a 2nd adhesive, and obtains the double-sided adhesive tape of this invention.

As a result of winding up the obtained double-sided adhesive tape in roll shape as shown in FIG. 9, it can unwind smoothly even without a release paper, and there is no problem in performance.

Example 2

Styrene content 14 weight To 100 parts by weight of a rubber-based SIS pressure-sensitive adhesive mainly composed of a phosphorus styrene-isoprene-styrene block copolymer, 5 parts by weight of an additional silicone polymer (polydimethylsiloxane) is added, and 0.3 weight of a platinum catalyst. Add mixture 130 Heated for 60 seconds to obtain a first adhesive composition.

This first adhesive composition is 150 as shown in FIG. It is applied to one end of one side of a thick polyethylene film, and a rubber-based adhesive made of styrene-ethylene-butadiene-styrene block copolymer is applied to one end of both sides as a second adhesive and dried to obtain a double-sided adhesive tape of the present invention. To obtain.

The double-sided adhesive tape thus obtained was affixed to the fastener portion of the paper diaper as shown in Fig. 6, and the use of the diaper was tested on 10 people, which all fit well with the skin, so that the diaper was not peeled off and the urine leaked. Got.

Next, a second aspect of the present invention will be described below.

According to a second aspect of the present invention, one sheet of tape substrate is folded in a form in which two sheets are stacked, and a second adhesive layer is formed on one side of the overlapping both sides of the tape substrate, and a first adhesive layer is formed on the other side thereof. And an adhesive tape having a composition different from each other so that peeling of the first adhesive layer and the first adhesive layer can be affixed to each other, and wherein the third adhesive layer is formed on a suitable portion of the above-described tape base other than the overlapping both surfaces. It is about.

When comprised in this way, the 3rd adhesive layer is pressed to one member, and the tape base material is affixed on one member, and the overlapped tape base material is unfolded in one plate shape by peeling a 1st adhesive layer from a 2nd adhesive layer in the state, Thus, the two members can be fixed by attaching the tape base material to the one-side member by pressing the second adhesive layer and the first adhesive layer exposed by spreading to contact the other member.

Next, the example of 2nd aspect of this invention is described based on (FIGS. 12-20).

In Fig. 12, reference numeral 51 denotes an adhesive tape, and the adhesive tape 51 unwinds the winding body 52 in which the tape material of a long form is rolled in a roll state in a straight state, which is fixed to a constant dimension. It is supposed to manufacture by cutting.

The said adhesive tape 51 is equipped with the tape base material 53 formed in the longitudinal direction from synthetic resin films, such as a polypropylene film, and sheet-like materials, such as paper or cloth. As shown in FIG. 13, the tape base member 53 is folded in two overlapping states with respect to the middle part in the longitudinal direction so that one end portion and the other end portion in the longitudinal direction almost overlap each other, and the two sides overlapping each other ( The second adhesive layer 54 is formed on one surface 53a of 55a) and 53b, and the first adhesive layer 55 is formed on the other surface 53b, respectively.

At this time, for example, the second adhesive layer 54 is formed of an adhesive composition comprising 50 parts by weight of a petroleum resin based on 50 parts by weight of the SIS block copolymer, while the first adhesive layer 55 is formed of an acrylic adhesive composition. As shown in the dotted line in FIG. 13, the second adhesive is formed by varying the composition of the two pressure-sensitive adhesive layers 55 and 54, such as by forming the pressure-sensitive adhesive made by mixing 2 parts by weight of the additional silicone with respect to 98 parts by weight. The layer 4 and the first adhesive layer 55 are attached in a state in which they can be peeled off.

Further, the outer surface of the other end portion of the tape substrate 53 is formed by arriving at the third adhesive layer 56 formed of an adhesive having the same composition as the second adhesive layer 54 described above. In 53, the peeling layer 57 with respect to the 3rd adhesive layer 56 is formed in the outer surface of one end part so that it may unwind in the state wound up by the winding body 52. As shown in FIG.

Further, at one end of the tape base 53, a handle portion 53c is formed in which the second adhesive layer 54 does not arrive in order to serve as a handle when peeling off.

The adhesive tape 51 having such a configuration is used as the fastener tape in the diaper 5A as shown in FIGS. 20 and 14, and the back portion 5A1 of the diaper 5A is fixed to the front portion 5A2, and the tape The base material 53 is attached to the front part 5A2 via the 2nd adhesive layer 54. As shown in FIG. In addition, the first adhesive layer 55 is attached to the front portion 5A2, and the adhesion area of the tape base material 53 to the center tape 5A3 of the front portion 5A2 of the diaper 5A is doubled compared with the conventional one. It is possible to prevent the tape base material 53 from sliding along the surface of the center tape 5A3, so that the diaper 5A is loosened by the movement of the infant or the baby, or the other end of the tape base material 53 is prevented. The portion protrudes from the side edge of the front portion 5A2 and can be reliably prevented from contacting the skin 5B of the infant or suckling.

The present inventors compared the shear adhesion of the second embodiment of the invention with the prior art in the following manner.

That is, in the sample of the present application, the tape base material 53 is 100 thick. Width as non-stretched polypropylene film, 25 , Length 40 And the second adhesive layer 54 to 14 weights of styrene 50 weight part of the styrene-isoprene-styrene block copolymer with 50 weight part of petroleum-type resins. ., Length 10 along the longitudinal direction of the tape substrate 53 To form. On the other hand, the pressure-sensitive adhesive formed by blending 2 parts by weight of an additional silicone such as dimethylpolysiloxane containing 10 parts by weight of a three-dimensional organopolysiloxane with respect to 98 parts by weight of an acrylic pressure-sensitive adhesive such as polybutyl acrylate and the like for the first adhesive layer 55 Length 20 along the longitudinal direction of the tape base material 53 To form.

On the other hand, the comparative sample only does not form the first adhesive layer 55 of the present application, and the other configuration is the same as the embodiment of the present application.

And 23 Humidity 65 In a standard atmosphere, these samples were 0.1 release agent having a long-chain alkyl group on the surface of the phosphorus-stretched polypropylene film On the adherend formed by applying a thickness of 2, the second adhesive layer 54 overlaps downwards, which is 2 50 rollers Press-bonded by reciprocating once at a rate of / sec, left for 30 seconds, and then the tape substrate 53 is 300 in one direction along its longitudinal direction. Tensile at a rate of / min, the maximum load when the adhesive tape 51 is peeled from the adherend is read.

As a result, in the embodiment of the present invention, the maximum load required for peeling averages 6.0. In contrast, conventional products averaged 3.9 Next, it demonstrates that the peeling strength of this application is high.

In addition, when using the silicone-containing adhesive as the first adhesive layer 55, it is assumed that the silicon contained in the adhesive bleeds to the surface of the adhesive layer over time, but the second adhesive layer 53 The adhesive strength did not rise over time, and the peelability of the second adhesive layer 54 and the first adhesive layer 55 did not decrease over time. In this case, it is preferable to mix | blend 0.01-30 weight part of silicone type polymers with respect to 100 weight part of acrylic or rubber adhesive compositions. When the compounding quantity of a silicone type polymer is less than this range, peeling with the 2nd adhesive layer 54 becomes difficult, and when the compounding quantity of a silicone type polymer is larger than this, adhesive strength falls.

15 to 19 show another embodiment of the present invention.

As shown in FIG. 15, the second adhesive layer 54 and the first adhesive layer 55 are formed on both surfaces 53a and 53b which are partially folded to overlap each other by overlapping the tape substrate 53 at one end thereof. And a third adhesive layer 56 on the side opposite to the second adhesive layer and the first adhesive layers 54 and 55 among the two sides of the non-overlapping portion 53d of the tape substrate 53. ) Is formed. Reference numeral 53e denotes a colored portion to make the handle part visible to the eye.

In this FIG. 15, the third adhesive layer 56 may extend to near the center of the fold of the tape substrate 53, as indicated by the dashed line.

Shown in FIG. 16 is a modified example of FIG. 15 described above, wherein the second adhesive layer and the first adhesive layers 54 and 55 are shown on both sides of the non-overlapping portion 53d of the tape substrate 53. The 3rd adhesive layer 56 is formed in the same surface as the formed surface, and the handle tape 58 is affixed on the inner surface of one end part of the tape base material 53 again.

In FIG. 17, both ends of one end portion and the other end portion of the tape substrate 53 are folded to face each other with respect to the center portion of the tape substrate 53, so that the two inner surfaces 53a of the left and right overlapped portions and The outer surface 53f which forms the 2nd adhesive layer 54 and the 1st adhesive layer 55 in 53b, respectively, and is located in the site | part of the center part side of the tape base material 53 among the outer surfaces of the part which overlapped both, The third adhesive layer 56 is formed at 53f. In this case, both of the third adhesive layers 56 and 56 may be continuous as indicated by the dotted lines.

As shown in FIG. 18, the adhesive tape 51 shown in FIG. 17 affixes to one member 5C via the 3rd adhesive layer 56, and the 2nd adhesive layer of the part which overlapped both left and right ( 54) and 1st adhesive layer 55 are peeled off, and the tape base material 53 is unfolded in one sheet form, and a pair of left and right 2nd adhesive layers and the 1st adhesive layers 54 and 55 are made into the other member 5D. It is used by attaching to and is suitable as a tape for fixing a sanitary napkin, for example.

In FIG. 19, the tape base material 53 is folded so that one end thereof partially overlaps, and the second adhesive layer 54 is formed on the two inner surfaces 53a and 53b of the part overlapping one end thereof. While forming the first adhesive layer 55, the other end portion of the tape base material 53 is folded up and down opposite to the folding direction of the one end portion described above, so that one of two inner surfaces of the overlapped portion of the other end portion thereof is folded. The third adhesive layer 56 is formed at 53g, and the first adhesive layer 55 is formed at the other surface 53h.

In the present invention, the combination of these pressure-sensitive adhesive layer compositions for freely peeling the first and second pressure-sensitive adhesive layers is not limited to the above-described embodiments, and various combinations can be adopted.

[Industry availability]

As described above, the double-sided pressure-sensitive adhesive tape of the first aspect of the present invention does not need to use a release paper because the pressure-sensitive adhesives do not adhere to each other and can be easily peeled off between the pressure-sensitive adhesive layers. It has an effect that can be suitably used as.

Moreover, in the adhesive tape of the 2nd aspect of this invention, since the adhesive layer was formed in the both surfaces of which the tape base material mutually overlapped, even if the area of the tape base material is the same as before, the sticking area of the tape base material with respect to the other member is compared with the conventional one. Can be doubled.

Therefore, according to the second aspect of the present invention, since the affixed area of the tape base material to the other member can be doubled without increasing the area of the tape base material, there is an effect of remarkably improving the fixing strength without increasing the manufacturing cost. .

Claims (6)

On one side of the substrate, a first adhesive layer made by blending 0.01 to 30 parts by weight of a silicone polymer with respect to 100 parts by weight of an acrylic or rubber adhesive composition is formed, and on the other side, an acrylic or rubber adhesive layer is formed as a second adhesive layer. Double sided adhesive tape. A double-sided adhesive tape having a laminated structure obtained by laminating two or more double-sided adhesive tapes as claimed in claim 1, wherein the first and second adhesive layers face each other so as to be peeled between the layers. The double-sided adhesive tape of Claim 1 wound up without using a release paper. Fastener tape for paper diapers, characterized in that the double-sided adhesive tape as claimed in claim 1 is used. The second adhesive layer of the double-sided adhesive tape claimed in claim 1 is affixed to the adherend, and the adhesive layer of another adhesive tape is affixed on the first adhesive layer, so that the first adhesive layer of the adhesive layer and the double-sided tape is A method of using a double-sided adhesive tape, characterized in that the peeling between the layers. The double-sided adhesive tape according to claim 1, wherein the first adhesive layer is formed on a portion of one side of the substrate, and the second adhesive layer is formed on the other portion of the same side and on the portion of the other side opposite to the first adhesive layer.