JP2014001312A - Autohesion pressure-sensitive adhesive tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an autohesion pressure-sensitive adhesive tape with which branches, stems, vines, new treetops etc. of plants are bound together.SOLUTION: An autohesion pressure-sensitive adhesive tape 1 includes a pressure-sensitive adhesive, with which autohesion retention characteristics to retain a suspended state produced by suspending a weight 5 on a loop 3 formed by butt-seaming 2 portions of the pressure-sensitive adhesive with each other are sufficiently obtained in an environment of 23°C or even in an environment of 40°C, applied to one side of a tape-shaped substrate. An elastomer of the pressure-sensitive adhesive is produced by mixing 10-80 wt.% of a styrene-isoprene-styrene block polymer of which the styrene content is 14 to 19 wt.% and 20-90 wt.% of a styrene-isoprene-styrene block polymer of which the styrene content is 25 to 50 wt.%.

Description

  The present invention relates to a self-adhesive pressure-sensitive adhesive tape, and more particularly, to a pressure-sensitive adhesive tape for attracting and binding plants and organisms such as vegetables, and more specifically, plant vines such as grapes and tomatoes during cultivation to pillars and shelves.

In general, when growing plants such as fruits such as apples, pears and persimmons, vegetables such as cucumbers, tomatoes and eggplants, and ornamental plants such as flowers, branches and vines are broken or damaged by wind and dead weight during cultivation. It is necessary to prevent. In addition, it is necessary to make the plant healthy and to make it easy to harvest by adjusting the direction in which the plant grows and growing it in a balanced manner. For this purpose, plant vines, stems, branches, and the like are fixed by tying them with support wires or shelves covered with plastic or the like.
This bundling operation itself is simple, but it is necessary to perform a huge amount of bundling within a short period of growth, and is a very labor intensive work.

Therefore, the applicants have proposed a bundling method using an adhesive tape, but this is a method of bundling by sticking the adhesive surfaces of the pressure-sensitive adhesive tape together, and as described above, no wire is used. It is characterized by high safety (Patent Document 1).
In addition, since the adhesive surfaces of the adhesive tape are bonded to each other as described above, the adhesive is configured to increase the self-adhesive force to which the adhesive surfaces adhere to each other than the adhesive force ( Patent Document 2)

  Since the above-mentioned various cultivations are usually carried out in an open field, the average temperature should be about 23 ° C. at room temperature, but the above-mentioned cultivation is performed in a house such as a plastic house. There are many things that are often seen. In a house, the temperature is often high, and in such a high temperature region, it is necessary to use an average temperature of about 40 ° C. as a standard. Difficult to get.

Japanese Utility Model Publication No. 3-3571 JP 2004-161962 A

The present invention is an adhesive tape that can bind stems, vines, branches, new treetops, and the like of a plant to a support or the like. The binding state of the tape is high even at the above-described normal temperature (temperature: 23 ° C.). (40 ° C.).
Furthermore, the present invention is intended to obtain a product that can be reliably bundled and has excellent bundling workability without adversely affecting the growth of the plant by the bundling.

The present invention provides a self-adhesive pressure-sensitive adhesive tape in which a pressure-sensitive adhesive layer is formed by applying a pressure-sensitive adhesive to one surface of a tape-like substrate, and the elastomer of the pressure-sensitive adhesive has a styrene content of 14% by weight or more. 10% to 80% by weight of styrene-isoprene-styrene block polymer up to 20% by weight and 20% to 90% of styrene-isoprene-styrene block polymer having a styrene content of 25% by weight or more and up to 50% by weight. It contains a mixture mixed in weight%. And this self-adhesive adhesive tape is formed so that the following (a) and (b) may be satisfied simultaneously.
(A): Self-adhesiveness same as the self-adhesive pressure-sensitive adhesive tape having a length of 60 mm on the pressure-sensitive adhesive portion of 60 mm in the central portion, leaving a length of 20 mm at both ends of the self-adhesive pressure-sensitive adhesive tape having a width of 10 mm and a length of 100 mm. A non-adhesive tape with an adhesive tape attached is used as a test piece, and a metal support rod having a diameter of 15 mm is attached to a loop formed by joining the parts of the adhesive with a length of 20 mm at both ends of the test piece. A weight of 1000 g was suspended by inserting and supporting, and the weight did not fall after being held for 24 hours under conditions of a temperature of 23 ° C. and a relative humidity of 50% is ½ or more.
(B): A weight having a weight of 500 g is suspended from the loop described in the above (a), and the weight does not fall after being held for 24 hours under conditions of a temperature of 40 ° C. and a relative humidity of 75%. 2 or more.

  Furthermore, this self-adhesive pressure-sensitive adhesive tape is formed so that the adhesive strength to SUS is less than 2.0 N / 10 mm, the probe tack is less than 2.0 N / 5 mmφ, and the self-adhesive strength is 10.0 N / 10 mm or more. .

The self-adhesive adhesive tape of the present invention can easily fix plant branches, stems, vines, new treetops, etc., to pillars, shelves, etc. by sticking together the adhesive surfaces of this adhesive tape. It is possible to maintain a united state even in a high temperature environment such as cultivation in a greenhouse, as well as in a room temperature environment such as cultivation in an open field.
Furthermore, since the adhesive strength of the adhesive tape is low with respect to other adherends, it does not adversely affect the growth of plants without damaging plant branches, stems, vines, new treetops and the like.

It is explanatory drawing which shows the method of measuring the self-adhesion holding property of the self-adhesive adhesive tape of this invention.

  In the base material of the self-adhesive adhesive tape in the present invention, a porous material formed from a fibrous material such as kraft paper, crepe paper, Japanese paper, polyolefin resin, polyester resin, vinyl chloride resin, polyimide system A plastic film formed of a resin or the like can be used as appropriate.

  When the porous material is used, it can be appropriately treated with an impregnating agent, a back surface treating agent or the like in order to adjust properties such as strength, weather resistance and rigidity. The basis weight and thickness of the porous material are appropriately selected depending on the application and are not particularly limited.

  In addition to the above-described plastic film, the use of a biodegradable or photodegradable plastic film can be preferable from the viewpoint of the environment. Further, a plurality of the above-mentioned ones can be used in combination, and the above plastic films can be used, or a plastic film and a porous material can be laminated and used. Moreover, a porous plastic film can also be used as needed.

  The plastic film may be subjected to surface treatment such as corona treatment, plasma treatment, and primer treatment on one side or both sides in order to improve adhesion with the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer described below. . The basis weight of the base material using this plastic film can be used without any particular limitation.

An adhesive is applied to one surface of the substrate to form an adhesive layer. The following are used as the elastomer of the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer.
This elastomer has a low styrene polymer (low styrene SIS) which is a styrene-isoprene-styrene block polymer (SIS) having a styrene content of 14% by weight or more and 19% by weight or less, and a styrene content of 25% by weight or more. And consisting of a mixture of high styrene polymer (high styrene SIS) which is 50% by weight or less of styrene-isoprene-styrene block polymer (SIS). The styrene content of the high styrene polymer is 30% by weight or more and more preferably 50% by weight or less.

The mixing ratio of the low styrene polymer and the high styrene polymer is 10% to 80% by weight of the low styrene polymer and 20% to 90% by weight of the high styrene polymer.
Preferably, the low styrene polymer is 20 wt% to 70 wt% and the high styrene polymer is 30 wt% to 80 wt%.
When the amount of the low styrene polymer is 10% by weight or less, the self-adhesion retention described later decreases, and when it exceeds 80% by weight, the self-adhesion retention also decreases.

The pressure-sensitive adhesive preferably contains the above elastomer, a tackifier resin, and a filler, and if necessary, is blended with various additives such as a softener, a plasticizer, an ultraviolet absorber, and an anti-aging agent.
Examples of the tackifying resin include natural products such as rosin resins and terpene resins and derivatives thereof, aliphatic petroleum resins, alicyclic petroleum resins, aromatic petroleum resins, coumarone indene resins, styrene resins, Examples thereof include synthetic resins such as phenolic resins and xylene resins.
This tackifying resin is usually used in an amount of 4 to 150 parts by weight, preferably 10 to 100 parts by weight, and more preferably 15 to 70 parts by weight with respect to 100 parts by weight of the elastomer. By blending the tackifier resin, self-adhesive strength at room temperature can be imparted to the pressure-sensitive adhesive component, which can contribute to obtaining self-adhesion retention at room temperature and high temperature.

Examples of the filler include calcium carbonate, zinc white (zinc oxide), aluminum silicate, silica, talc, diatomaceous earth, silica sand, pumice powder, slate powder, mica powder, aluminum sol, alumina white, aluminum sulfate, Barium sulfate, lithopone, calcium sulfate, molybdenum disulfide, graphite, glass fiber, glass sphere, single crystal potassium titanate, carbon fiber, activated zinc white, zinc carbonate, magnesium oxide, basic magnesium carbonate, resurge, red lead, lead Examples include white, calcium hydroxide, activated calcium hydroxide, and titanium oxide.
Among these fillers, calcium carbonate, zinc white, silica, titanium oxide and the like are preferable. When these fillers are blended, appropriate cohesiveness can be imparted to the pressure-sensitive adhesive.

  The average particle diameter of the filler is preferably 5 μm or less. In this case, if a small amount of fine particles having an average particle size of smaller than 5 μm and a small amount of large particles having an average particle size of 7 to 125 μm are used in combination, the cohesive strength and adhesive strength are within an appropriate range. Easy to adjust. In consideration of a balance between self-adhesive adhesive strength and adhesive strength to adherend, the fine particles having a large particle size have a particle diameter of 70% to 250% of the thickness of the adhesive applied to the substrate. It is desirable to choose a mix.

  As the fine particles having a large particle diameter, organic fine particles, inorganic fine particles, and a mixture thereof can be used. Representative organic fine particles include organic microballoons such as vinylidene chloride, phenol resin, urea resin, and epoxy resin, and synthetic resin fine particles such as polystyrene and polymethyl methacrylate. Examples of the inorganic fine particles include inorganic microballoons such as borosilicate glass and inorganic fillers such as calcium carbonate and silica.

A filler is 1-230 weight part with respect to 100 weight part of said elastomers, Preferably it is 75-215 weight part. When it is 75 to 215 parts by weight, the adhesive strength against SUS, the adhesive strength of the probe tack, and the self-adhesion force to be described later take appropriate values, which may adversely affect the attraction binding work and the plant growth. Even less. Further, if it is 230 parts by weight or more, it tends to be difficult to obtain self-adhesion retention.
When blending fine particles having a large particle size, it is preferably 0.1 to 5% by weight, more preferably 0.2 to 3% by weight, particularly preferably 0.3 to 2% by weight based on the total amount of the pressure-sensitive adhesive. It should be a range.

  Examples of the softener include petroleum softeners, plant softeners, liquid rubber, liquid tackifying resins, and synthetic plasticizers. By blending a softening agent, cohesion and self-adhesion can be adjusted.

  These softeners are selected and used in consideration of compatibility with elastomer components and the like. When using a softener as needed, it is good to use within the range which does not impair self-adhesion retention property, and it is normally used in the ratio of 0-200 weight part with respect to 100 weight part of elastomer components. When it is preferable to have high self-adhesive adhesive strength, low adhesive strength to the binding object, and low tack, like the self-adhesive adhesive tape of plant invitation quotes for binding and attracting plants during cultivation Often, it is desirable not to use a softener.

  Examples of ultraviolet absorbers include salicylic acid derivatives, benzophenone compounds, benzotriazole compounds, and cyanoacrylate compounds. When an ultraviolet absorber is used, it is usually added at a ratio of 0.1 to 5 parts by weight with respect to 100 parts by weight of the elastomer component.

  Antiaging agents include naphthylamine compounds, diphenylamine compounds, p-phenylenediamine compounds, other amine compounds, amine compound mixtures, quinoline compounds, hydroquinone derivatives, monophenol compounds, bisphenol compounds, trisphenol compounds. Examples thereof include compounds, polyphenol compounds, and thiobisphenol compounds. The blending ratio of the anti-aging agent is not particularly limited, but is usually 0.1 to 5 parts by weight, preferably 0.5 to 2 parts by weight with respect to 100 parts by weight of the elastomer component.

This self-adhesive pressure-sensitive adhesive tape is preferably formed so that the adhesive strength against SUS is less than 2.0 N / 10 mm and the probe tack is less than 2.0 N / 5 mmφ. If the adhesive strength to SUS is 2.0 N / 10 mm or more and the probe tack is 2.0 N / 5 mmφ or more, the tendency of the adhesive tape to adhere may increase depending on the object to be bound, which may not be preferable.
Further, the self-adhesive adhesive strength (self-adhesive force) of this self-adhesive adhesive tape may be 7.0 N / 10 mm or more, and preferably 10.0 N / 10 mm or more. When it is 10.0 N / 10 mm or more, good self-adhesive adhesive strength can be obtained.

[Example 1]
80 parts by weight of “low styrene SIS (styrene content: 16% by weight, QUINTAC 3433 manufactured by Nippon Zeon Co., Ltd.)” and “high styrene SIS-3 (styrene content: 48% by weight, manufactured by ZEON CORPORATION, QUINTAC) as elastomers 3390) "in 20 parts by weight, 115 parts by weight of" calcium carbonate (manufactured by Maruo Calcium, Super # 1500) "as a filler, and" aliphatic petroleum resin (manufactured by Nippon Zeon, Quinton A-100) "as a tackifying resin. 40 parts by weight, 10 parts by weight of “terpene resin (Yasuhara Chemical Co., Ltd., YS Resin PX-1150)”, and 0.65 part by weight of “BASF Co., Ltd., Irganox 1010” as an anti-aging agent were added to 50 parts of toluene / n-hexane. : A rubber-based pressure-sensitive adhesive was obtained by dissolving and mixing in a mixed solvent.

  A polypropylene film having a thickness of 43 μm was subjected to a corona treatment and then subjected to a printing process having a primer effect, and applied thereon so that the thickness of the pressure-sensitive adhesive layer was 20 μm to prepare a pressure-sensitive adhesive tape having a width of 10 mm.

[Examples 2-8, Comparative Examples 1-2]
An adhesive tape was produced in the same manner as in Example 1 except that the formulation was changed to the formulation shown in Table 1.

[Examples 9 to 16, Comparative Examples 3 to 4]
“High styrene SIS-3 (styrene content: 48% by weight)” was replaced with “high styrene SIS-2 (styrene content: 30% by weight, manufactured by Nippon Zeon Co., Ltd./Quintac SL-165)”. An adhesive tape was produced in the same manner as in Example 1 except that the blending ratio was changed to the blending formulation shown in Table 2.

[Examples 17 to 23, Comparative Example 5]
“Low styrene SIS (styrene content: 16% by weight)” was changed from 80 parts by weight to 50 parts by weight, and “High styrene SIS-3 (styrene content: 48% by weight)” was changed from 20 parts by weight to 50 parts by weight. A pressure-sensitive adhesive tape was produced in the same manner as in Example 1 except that the blending ratio of calcium carbonate was changed to the blending formulation shown in Table 3.

[Examples 24-31, Comparative Example 6]
“Low styrene SIS (styrene content: 16% by weight)” was changed from 80 parts by weight to 50 parts by weight, and “High styrene SIS-3 (styrene content: 48% by weight)” was changed to “High styrene SIS-2 (styrene content). In the same manner as in Example 1, except that the amount of calcium carbonate was changed from 20 parts by weight to 50 parts by weight, and the blending ratio of calcium carbonate was changed to the blending formulation shown in Table 4. Was made.

[Examples 32 and 33]
“High styrene SIS-3 (styrene content: 48% by weight)” was changed to “high styrene SIS-1 (styrene content: 25% by weight, manufactured by Nippon Zeon Co., Ltd./Quintac 3460)”, and each component was blended An adhesive tape was prepared in the same manner as in Example 1 except that the ratio was changed to the formulation shown in Table 5.

[Comparative Examples 7, 1, 3, 8]
Except that the elastomer was changed to 100 parts by weight of “low styrene SIS (styrene content: 16% by weight)” and the blending ratio of calcium carbonate was changed to the blending formulation shown in Table 5, the same as in Example 1, An adhesive tape was prepared.

(test)
In order to investigate the characteristics and performance of the above examples and comparative examples, the following self-adhesion strength test, SUS adhesion test, probe tack test, self-adhesion retention property test (23 ° C./1000 g), self-adhesion retention property The test (40 degreeC * 500g) was done.

[Self-adhesion test]
Under the conditions of 23 ° C. and 50% RH, the tapes of the examples and comparative examples (width 10 mm) are used as test pieces, the adhesive surface of the test pieces is used as the inside, and the bonding length is 100 mm or more, and the width is 50 mm. With a 2 kg roller, one reciprocal pressing was performed at a speed of 300 mm / min and left for 30 minutes. Then, the said test piece was fixed to the Instron type | mold tensile testing machine, T-type peeling was carried out with the peeling speed of 300 mm / min, and the peeling force (N / 10mm) obtained at that time was measured.

[Vs. SUS adhesion test]
Under the conditions of 23 ° C. and 50% RH, the tape of Example and Comparative Example (width 10 mm) was used as a test piece, and the test piece was attached to the surface of a mirror-finished SUS304 steel plate according to JIS Z0237. After pressure bonding with a 1 kg roller, the test piece was peeled off at 300 mm / min in a direction of 180 ° with respect to the test plate within 1 minute, and the peel force (N / 10 mm) obtained at that time was measured.
In addition, the notation of “<0.1” in SUS adhesive strength indicates that it was below the detection limit value of the measuring instrument.

[Probe tack test]
Under the conditions of 23 ° C. and 50% RH, the tape of Example and Comparative Example (width 10 mm) was used as a test piece, and the test piece was attached to the weight ring so as not to sag in accordance with ASTM D2979, and a cylinder with a diameter of 5 mm. After contacting the probe to the adhesive surface of the test piece with a load of 0.98 ± 0.001 N / cm ^{2 at} a contact speed of 10 ± 0.1 mm / sec for 1.0 ± 0.01 sec, the same as the contact speed The force (N / 5 mmφ) required to peel the probe from the adhesive surface in the vertical direction at a speed was measured.
In Example 8 and Comparative Example 2 described later, “−” indicates that measurement was not possible because the test piece was peeled off the weight ring when the probe was brought into contact with the test piece.

[Self-adhesion retention property test (23 ° C., 1000 g)]
The self-adhesive pressure-sensitive adhesive tape having a length of 60 mm is left in the pressure-sensitive adhesive portion having a length of 20 mm and the pressure-sensitive adhesive portion (2) having a length of 20 mm at both ends of the self-adhesive pressure-sensitive adhesive tape having a width of 10 mm and a length of 100 mm. The same self-adhesive pressure-sensitive adhesive tape as above was affixed to make it non-adhesive, and a test piece (1) of the self-adhesive adhesive tape was obtained. As shown in FIG. 1, 20 mm long adhesive portions at both ends of the test piece (1) are bonded to each other, and a metal support bar (5) having a diameter of 15 mm is attached to the loop (3). The weight (5) having a weight of 1000 g (1 kg) was suspended and held at a temperature of 23 ° C. and a relative humidity (RH) of 50% for 24 hours, and then the falling state of the weight was observed. . The number of test specimens was four.
Evaluation criteria ○: No falling of the weight is observed.
Δ: 2 or more of 4 weights that did not fall.
X: All weights dropped.

[Self-adhesion retention property test (40 ° C, 500 g)]
A weight of 500 g is suspended from a test piece similar to the self-adhesion retention property test (23 ° C./1000 g), and maintained at a temperature of 40 ° C. and a relative humidity (RH) of 75% for 24 hours. The state after the observation was observed. The number of test specimens was four.
The test conditions of the self-adhesion retention characteristic test (40 ° C./500 g) are stricter than the self-adhesion retention characteristic test (23 ° C./1000 g).
The evaluation criteria are the same as in the self-adhesion retention property test (23 ° C./1000 g).

〔Comprehensive evaluation〕
A comprehensive evaluation was performed based on the above various tests.
The evaluation criteria for comprehensive evaluation are as follows.
○ (good): Both the self-adhesion retention property test (23 ° C./1000 g) and the self-adhesion retention property test (40 ° C./500 g) were evaluated as “◯”. The SUS adhesive strength is less than 2.0 N / 10 mm, the probe tack is less than 2.0 N / 5 mmφ, and the self-adhesive adhesion is 10.0 N / 10 mm or more.
△ (possible): In the self-adhesion holding property test (23 ° C./1000 g) and the self-adhesion holding property test (40 ° C./500 g), both were evaluated as “◯”. Those that do not satisfy the conditions of SUS adhesive strength of less than 2.0 N / 10 mm, probe tack of less than 2.0 N / 5 mmφ, and self-adhesive adhesion of 10.0 N / 10 mm or more.
Or, in the self-adhesion retention property test (23 ° C./1000 g), the evaluation of “◯” was obtained, and in the self-adhesion retention property test (40 ° C./500 g), the evaluation of “Δ” was obtained. The adhesive properties satisfy the conditions that the adhesive strength to SUS is less than 2.0 N / 10 mm, the probe tack is less than 2.0 N / 5 mmφ, and the self-adhesive adhesion is 10.0 N / 10 mm or more.
X (impossible): Evaluation of “x” in the self-adhesion retention property test (40 ° C./500 g).

(result)
Tables 1 to 5 show the results of the above tests and the overall evaluation based on the results of these tests.

(Discussion)
As shown in Table 1, Examples 1 to 8 have better results in self-adhesion retention characteristics (23 ° C./1000 g) and self-adhesion retention characteristics (40 ° C./500 g) than Comparative Examples 1 and 2. Especially, the thing of Examples 1-7 is still more preferable.
In Examples 9 to 16 shown in Table 2, favorable results were obtained in the self-adhesion retention characteristics (23 ° C./1000 g) as compared with Comparative Examples 3 and 4. In the self-adhesion retention characteristics (40 ° C./500 g), the results of Example 9 are slightly inferior, but Examples 10 to 16 have good results.

In Examples 17 to 23 shown in Table 3, better results were obtained in the self-adhesion retention characteristics (40 ° C./500 g) than in Comparative Example 5. Furthermore, Examples 19 to 23 have excellent evaluation even in adhesive properties (viscosity to SUS is less than 2.0 N / 10 mm, probe tack is less than 2.0 N / 5 mmφ, and self-adhesion is 10.0 N / 10 mm or more). Is obtained.
In Examples 24 to 31 shown in Table 4, the self-adhesion retention characteristics (23 ° C. · 1000 g) and the self-adhesion retention characteristics (40 ° C. · 500 g) are better than those of Comparative Example 6. Among them, Examples 26 to 31 have preferable results in the above-mentioned adhesive properties.

  Although Examples 32 and 33 in Table 5 had slightly poor self-adhesion retention characteristics (40 ° C./500 g), good results were obtained with self-adhesion retention characteristics (23 ° C./1000 g), and the overall evaluation was “OK”. Is obtained. On the other hand, Comparative Examples 7, 1, 3, and 8 do not provide satisfactory results in both the self-adhesion holding characteristics (23 ° C. · 1000 g) and the self-adhesion holding characteristics (40 ° C. · 500 g).

1 Test piece (self-adhesive adhesive tape)
2 Jointed part of specimen 3 Loop part of specimen 4 Support bar 5 Weight

Claims (6)

In a self-adhesive adhesive tape in which an adhesive is applied to one surface of a tape-like substrate, the elastomer of the adhesive is 10% by weight of a styrene-isoprene-styrene block polymer having a styrene content of 14% by weight to 19% by weight. % To 80% by weight, and a mixture obtained by mixing 20% to 90% by weight of a styrene-isoprene-styrene block polymer having a styrene content of 25% to 50% by weight, the following (a) and (b) A self-adhesive adhesive tape characterized by satisfying
(A): Self-adhesiveness same as the self-adhesive pressure-sensitive adhesive tape having a length of 60 mm on the pressure-sensitive adhesive portion of 60 mm in the central portion, leaving a length of 20 mm at both ends of the self-adhesive pressure-sensitive adhesive tape having a width of 10 mm and a length of 100 mm. A non-adhesive tape with an adhesive tape attached is used as a test piece, and a metal support rod having a diameter of 15 mm is attached to a loop formed by joining the parts of the adhesive with a length of 20 mm at both ends of the test piece. A weight of 1000 g was suspended by inserting and supporting, and the weight did not fall after being held for 24 hours under conditions of a temperature of 23 ° C. and a relative humidity of 50% is ½ or more.
(B): A weight having a weight of 500 g is suspended from the loop described in the above (a), and the weight does not fall after being held for 24 hours under conditions of a temperature of 40 ° C. and a relative humidity of 75%. 2 or more.   The self-adhesive pressure-sensitive adhesive tape according to claim 1, wherein the pressure-sensitive adhesive contains 4 to 150 parts by weight of a tackifier resin and 1 to 230 parts by weight of a filler with respect to 100 parts by weight of the elastomer.   The self-adhesive pressure-sensitive adhesive tape according to claim 2, comprising 75 to 215 parts by weight of the filler.   The self-adhesive adhesive tape has a SUS adhesive strength of less than 2.0 N / 10 mm, a probe tack of less than 2.0 N / 5 mmφ, and a self-adhesive adhesive force of 10.0 N / 10 mm or more. The self-adhesive pressure-sensitive adhesive tape according to any one of 1 to 3.   The elastomer comprises a styrene-isoprene-styrene block polymer having a styrene content of 14% by weight to 19% by weight and a styrene-isoprene having a styrene content of 30% by weight to 50% by weight. The self-adhesive pressure-sensitive adhesive tape according to any one of claims 1 to 4, comprising a mixture obtained by mixing 30% to 80% by weight of a styrene block polymer.   The plant-cited self-adhesive pressure-sensitive adhesive tape according to any one of claims 2 to 5, wherein the filler contains 50% by weight or more of calcium carbonate and does not contain a softening agent.

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