JP7253788B2 - Handrail Curing Tape and Handrail Curing Tape Roll - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tape used for curing handrails, and a tape roll formed by winding the tape.

Patent Literature 1 and Patent Literature 2 describe curing tapes for handrails that are used when painting or repairing buildings.

Patent Literature 1 describes a curing tape for handrails in which three linear adhesive layers are provided on the back surface of a tape base material. The tape substrate is formed by laminating a black pigment-blended polyethylene onto a polyethylene flat yarn cloth. As another example, it is described that the tape base material is composed of a polyester nonwoven fabric that has been sealed with a black impregnating agent.

Patent Document 2 describes a curing tape for handrails in which two linear adhesive layers are provided on the back surface of a tape base material. The tape base material is formed by laminating polyethylene mixed with a black pigment to a polyethylene flat yarn cloth, as in Patent Document 1. As another example, similarly to Patent Document 1, it is described that the tape base material is composed of a polyester nonwoven fabric that has been sealed with a black impregnating agent.

Further, Patent Document 3 describes an adhesive tape provided with an adhesive layer in which an antirust agent is mixed with an adhesive.

JP 2018-178445 A Japanese Patent Application Laid-Open No. 2018-39901 Japanese Utility Model Laid-Open No. 4-114538

Both Patent Document 1 and Patent Document 2 are excellent in workability during construction. However, if the handrail is made of a material that is susceptible to corrosion, the handrail may corrode if the handrail and the tape remain in contact for a long period of time.

Since the adhesive tape of Patent Document 3 contains an antirust agent in the adhesive layer, a certain antirust effect is expected. However, in the tapes according to the examples, since the base material is composed of the polyester film, the moisture permeability of the base material is insufficient. If moisture such as rainwater enters between the tape and the handrail to which the tape is attached, the handrail may corrode.

The present invention provides a handrail curing tape that can prevent the handrail from corroding even when the handrail is made of a material weak against corrosion, and a handrail curing tape roll using the tape. intended to provide

It is a handrail curing tape composed of a tape base material having moisture permeability, and the tape base material is composed of woven fabric, non-woven fabric, or paper sealed with synthetic resin. The above problem is solved by a handrail curing tape having an adhesive layer containing a rust inhibitor on one surface of a base material.

Moreover, the above problem is solved by a handrail-protecting tape roll wound with a handrail-protecting tape.

In the above-mentioned handrail-curing tape and handrail-curing tape roll, it is preferable that the water resistance of the tape substrate determined according to JIS L 1092 is 50 mmAq or more.

In the above-mentioned handrail-curing tape and handrail-curing tape roll, the moisture permeability of the tape base material determined according to JIS K 7129 is preferably 30 g/m ² ·day or more.

In the above handrail curing tape and handrail curing tape roll, the adhesive strength determined according to JIS Z 0237 is 0.1 to 5.0 N / cm, and the adhesive layer is removable. preferably.

In the above-mentioned handrail-curing tape and handrail-curing tape roll, the tape base material may be sealed with a synthetic resin having a glass transition temperature of +10°C or less as determined by JIS K 6240. preferable.

In the above-mentioned handrail-curing tape and handrail-curing tape roll, it is preferable that the tensile strength of the tape determined according to JIS Z 0237 is 38 N/1.5 cm or more.

INDUSTRIAL APPLICABILITY According to the present invention, a handrail curing tape capable of preventing corrosion of a handrail even when the handrail is made of a material weak against corrosion, and a handrail curing tape using the tape. Rolls can be provided.

1 is a cross-sectional view showing an embodiment of a handrail curing tape; FIG. FIG. 3 is a cross-sectional view showing another embodiment of a handrail curing tape; 3 is a perspective view showing an embodiment of a handrail-protecting tape roll formed by winding the handrail-protecting tape of FIG. 2. FIG. 3 is a cross-sectional view showing a state in which the handrail curing tape of FIG. 2 is adhered to the handrail; FIG.

Preferred embodiments for carrying out the present invention will be described below.

The present invention is a hand rub curing tape (hereinafter sometimes simply referred to as a tape) composed of a tape base material having moisture permeability, and the tape base material is a woven fabric that is sealed with a synthetic resin. Constructed of cloth, non-woven fabric, or paper. The tape has a pressure-sensitive adhesive layer containing a rust inhibitor on one surface of the tape substrate.

An adhesive layer containing a rust preventive is arranged on one surface of the handrail curing tape. The shape of the adhesive layer is not particularly limited. For example, as shown in FIG. 1, the handrail curing tape 1 may be provided with an adhesive layer 12 containing an antirust agent on the entire one surface of the tape substrate 11 . Moreover, as shown in FIG. 2, the handrail curing tape may be provided with an adhesive layer 22 containing a rust preventive on a portion of one surface of the tape substrate 21 .

The hand-rubbing curing tape 2 shown in FIG. 2 has a plurality of band-like adhesive layers 22 extending along the feeding direction of the tape 2 . Among the plurality of adhesive layers, the first adhesive layer 221 is arranged at one end of the tape 2 with a grip margin 23 left therebetween. Among the plurality of adhesive layers, the second adhesive layer 222 is arranged at the other end of the tape with a grip margin 23 left therebetween. The third adhesive layer 223 of the plurality of adhesive layers is arranged in the middle of the tape.

The handrail curing tape 1 shown in FIG. 1 is used by attaching an adhesive layer 12 provided on the entire one surface to a handrail. As shown in FIG. 3, the handrail curing tape 2 of FIG. The handrail curing tape 2 is fixed to the handrail 4 by adhering the layer 222 and adhering the second adhesive layer 223 to the middle of the front side of the handrail 4 in the width direction. When the handrail curing tape 2 is peeled off from the handrail 4, it can be peeled off by pinching the grip margin 23.例文帳に追加

The handrail-protecting tape 1 or 2 shown in FIG. 1 or 2 can be made into a handrail-protecting tape roll 5 by winding the tape into a roll as shown in FIG. In this case, as shown in FIG. 3, the adhesive layer 22 is wound on the outer peripheral surface of the tape roll 5 so that the adhesive layer 22 is exposed, and the adhesive layer 22 is peeled off from the other surface opposite to the surface on which the adhesive layer 22 is provided. Layers may be provided. A release paper (not shown) may be laminated on the adhesive layer 22 .

The handrail curing tape is made of woven fabric, non-woven fabric, or paper, and is sealed with synthetic resin. Free entry is restricted. Since the tape for handrail protection is simply a tape base made of woven fabric, non-woven fabric, or paper, which is sealed with synthetic resin, rainwater does not flow between the tape and the handrail to which the tape is attached. At the time of intrusion, the intruded moisture is diffused into the atmosphere by evaporation. Since the pressure-sensitive adhesive layer contains an antirust agent, it is possible to prevent the handrail from corroding until the water evaporates and diffuses.

The tape substrate is made of woven fabric, non-woven fabric, or paper, and is sealed with a synthetic resin. A substrate made of woven fabric, non-woven fabric, or paper has fine pores and thus allows moisture to evaporate. Further, since the fine holes are sealed with a synthetic resin, the droplets are prevented from completely freely passing through the tape when the droplets come into contact with the tape.

Examples of the paper that can be used include thin paper, kraft paper, fine paper, linter paper, baryta paper, parchment paper, and Japanese paper. As the nonwoven fabric, for example, a nonwoven fabric made of fibers such as polyester resin, acrylic resin, nylon, vinylon, and glass can be used. As the woven fabric, for example, a woven fabric made of fiber such as staple thread, polyester resin, acrylic resin, nylon, vinylon, glass, or flat yarn can be used.

The synthetic resin used to seal the tape substrate does not deteriorate in a short period of time due to water or ultraviolet rays, and can limit the free penetration of liquid droplets while maintaining the moisture permeability of the tape substrate. Anything is fine. Examples of such synthetic resins include acrylic, butadiene (SBR, MBR, NBR, etc.), and isoprene (NR, IR, etc.) polymers. When applying these polymers to the tape substrate, for example, a suspension of the polymer in any solvent can be used. A suspension of such a polymer may be applied, for example, to the tape substrate or impregnated.

It is preferable to use a synthetic resin having a glass transition temperature of +10° C. or lower as determined according to JIS K 6240 for sealing the tape substrate. Although the lower limit of the glass transition temperature of the synthetic resin is not particularly limited, it can be -75° C. or higher, for example. Softness can be imparted to the tape by using a synthetic resin having a glass phase transition temperature as described above for sealing. As a result, when the adherend is uneven, the followability of the tape to the adherend can be improved.

It is preferable that the tape substrate have a flat shape rather than a shape rich in unevenness such as embossing. The tape substrate is preferably colored for the purpose of reducing the transmittance of ultraviolet rays. The tape substrate preferably has a solar transmittance of, for example, 30% or less. The solar transmittance is the transmittance of light with a wavelength of 300 nm to 2500 nm measured by a spectrophotometer (UV-3100PC) manufactured by Shimadzu Corporation. Although the lower limit of the solar transmittance is not particularly limited, it can be, for example, 0.1% or more.

The adhesive layer is a layer containing an adhesive. The adhesive layer contains a base polymer. In addition to the base polymer, the pressure-sensitive adhesive layer can contain a tackifying resin, a plasticizer, and an appropriate solvent.

Examples of the base polymer include rubber-based, acrylic-based, urethane-based, and silicone-based polymeric materials.

Examples of the tackifier resin include, but are not limited to, terpene-based resins, terpene-phenolic resins, phenolic resins, aromatic hydrocarbon-modified terpene resins, rosin-based resins, modified rosin-based resins, and aliphatic synthetic petroleum. resins, aromatic synthetic petroleum-based resins, alicyclic synthetic petroleum-based resins, coumarone-indene resins, xylene resins, styrene-based resins, dicyclopentadiene resins, and the like.

The adhesive may contain a plasticizer. Examples of plasticizers include, but are not limited to, process oils, liquid polybutadiene, liquid polyisobutylene, liquid polyisoprene, liquid terpene resins, liquid terpene phenol resins, liquid rosin resins, liquid petroleum resins, and liquid silicone resins. Resin, liquid coumarone-indene resin, liquid xylene resin, liquid styrene resin, liquid paraffin, paraffin chloride, paraffin wax, co-oligomers of ethylene and α-olefins, white oil, petrolatum, petroleum sulfonate, gilsonite, petroleum asphalt, phthalate acid ester derivatives, isophthalic acid derivatives, tetrahydrophthalic acid derivatives, adipic acid derivatives, azelaic acid derivatives, sebacic acid derivatives, dodecane-2-acid derivatives, maleic acid derivatives, fumaric acid derivatives, trimellitic acid derivatives, citric acid derivatives, Itaconic acid derivatives, oleic acid derivatives, ricinoleic acid derivatives, stearic acid derivatives, other fatty acid derivatives, sulfonic acid derivatives, phosphoric acid derivatives, glutaric acid derivatives, other monoester plasticizers, glycol derivatives, glycerin derivatives, paraffin derivatives, epoxy Derivatives, polymeric plasticizers, animal and vegetable oil-based plasticizers, and the like.

When a tackifying resin or a plasticizer is blended with the base polymer, the tackifying resin or the plasticizer can be added in an amount of 5 to 100 parts by mass with respect to 100 parts by mass of the base polymer. can.

As the adhesive, an emulsion obtained by suspending the above base polymer in water can be suitably used. Since such an adhesive is water-based, it is preferable because it has relatively little odor and influence on the surrounding environment.

As the rust preventive agent added to the adhesive, a water-soluble rust preventive agent, an oil-soluble rust preventive agent, or a vaporizable rust preventive agent can be used. It is preferable to use a water-soluble antirust agent. The water-soluble anticorrosive agent is easily mixed with the water-dispersible pressure-sensitive adhesive, and can be eluted into rainwater that has intruded to provide a function of protecting the handrail surface. A water-soluble rust preventive agent is preferably used because it does not separate from the pressure-sensitive adhesive containing an emulsion of a base polymer suspended in water and does not easily affect the functions of the pressure-sensitive adhesive.

The amount of the rust preventive agent to be added is not particularly limited, but for example, 1 to 10 parts by weight of the rust preventive agent can be blended with 100 parts by weight of the pressure-sensitive adhesive applied to the substrate.

Examples of water-soluble rust inhibitors include inorganic acid salts such as chromates, molybdates, and nitrites; and rust inhibitors containing organic acid salts such as fatty acid salts, phosphate ester salts, and amine salts. be done.

Examples of oil-soluble rust inhibitors include rust inhibitors such as organic phosphate esters and organic acid amine salts.

Examples of the volatile rust preventive include rust preventives containing fatty acid amines, metal naphthenates, and the like.

Any suitable method may be used to provide the adhesive layer on the tape substrate. Examples thereof include gravure coater method, roll coater method, reverse coater method, doctor blade method, bar coater method, comma coater method, fountain die coater method, lip coater method and knife coater method. Preferred among these are the Graa coater method, the comma coater method and the lip coater method. When the adhesive is dissolved or dispersed in water or other liquid, it is preferable to dry the solvent or dispersion medium by heating with hot air, (near) infrared rays, high frequency energy, or the like after coating.

The tape substrate is preferably sealed with a synthetic resin so that the water resistance of the tape substrate determined according to JIS L 1092 is 50 mmAq or more, and more preferably 100 mmAq or more. Although the upper limit of the water resistance is not particularly limited, it may be, for example, 1000 mmAq or less or 500 mmAq or less.

In addition, the tape substrate is preferably sealed with a synthetic resin so that the moisture permeability of the tape substrate obtained according to JIS K 7129 is 30 g/m ² ·day or ^more . more preferably 180 g/m ² ·day or more. The upper limit of the moisture permeability is not particularly limited, but may be 1000 g/m ² ·day or less, or 800 g/m ² ·day or less.

The pressure-sensitive adhesive layer preferably has a pressure-sensitive adhesive strength of 0.1 to 5.0 N/cm as determined according to JIS Z 0237, and the pressure-sensitive adhesive layer preferably exhibits removability. To secure the holding force of the tape to the handrail and to prevent the paste from remaining on the handrail when the tape is peeled off. The adhesive strength of the adhesive layer can be adjusted, for example, by the thickness of the adhesive layer. Although the thickness of the pressure-sensitive adhesive layer is not particularly limited, it can be, for example, 5 to 60 μm or 10 to 40 μm.

Moreover, the tape substrate preferably has a tensile strength of 38 N/1.5 cm or more as determined according to JIS Z 0237. The upper limit of the tensile strength of the tape substrate is not particularly limited, but can be, for example, 90 N/1.5 cm or less, or 60 N/1.5 cm or less. The strength of the tape substrate can be adjusted, for example, by the thickness of the tape substrate. The thickness of the tape substrate is not particularly limited, but can be, for example, 10 to 500 μm, or 50 to 200 μm after applying the sealing synthetic resin.

The tape substrate preferably has an elongation of 5% or more as determined by JIS Z 0237 (test method A for tapes other than filament-reinforced tapes). The upper limit of the elongation of the tape substrate is not particularly limited, but can be, for example, 100% or less, 30% or less, or 15% or less.

Further, the tape substrate preferably has an air permeability of 100 s/25 cc or more as determined by JIS P 8117 (Gurley method). Although the upper limit of the air permeability is not particularly limited, it may be, for example, 10000s/25cc or less, or 700s/25cc or less.

Handrail curing tapes of Examples 1 to 7 and Comparative Examples 1 to 6 were produced by the following method.

[Example 1]
Paper having the basis weight shown in Table 1 was impregnated with an emulsion liquid containing an acrylic resin having a glass transition temperature of −30° C. and water, and dried. Table 1 shows the impregnation amount of acrylic resin, which is a synthetic resin. An emulsion liquid containing an acrylic resin having a glass transition temperature of +10° C. and water was applied to the surface of the obtained base material opposite to the surface on which the pressure-sensitive adhesive layer was to be formed, and dried. Table 1 shows the coating amount of acrylic resin, which is a synthetic resin. The amount of impregnated synthetic resin or the amount of applied synthetic resin indicates the weight of acrylic resin per 1 m ² of tape substrate after drying. The thickness of the substrate, as described in Table 1, was 90 μm.

The glass transition temperature of the synthetic resin used when impregnating the synthetic resin and when applying the synthetic resin was obtained according to the method specified in JIS K 6240.

A long-chain alkyl release agent was further applied on the coated and dried acrylic resin layer. Furthermore, on the surface opposite to the release layer, an adhesive containing a rust inhibitor is applied so that the adhesive layer has a thickness of 90 μm and dried, and the handrail curing according to Example 1 A tape was made. The adhesive was applied to the entire surface of the tape substrate. As the adhesive, a water-dispersed acrylic adhesive was used. As the rust preventive agent, a water-soluble rust preventive agent containing an inorganic acid salt as a main component ("Cheleslite ALF" manufactured by Cherest Co., Ltd.) was used. The amount of the adhesive added was such that 3 parts by weight of the rust inhibitor was added to 100 parts by weight of the adhesive.

[Example 2]
As shown in FIG. 2, a handrail curing tape according to Example 2 was produced in the same manner as in Example 1, except that the adhesive layer was provided in a plurality of strips (flow direction). bottom. The width of one adhesive layer was 10 mm, and the distance between the adhesive layers was 35 mm.

[Example 3]
As shown in Table 1, the method was the same as in Example 1, except that a rust inhibitor containing an organic acid amine salt as a main component (Cherest Co., Ltd. "Cheleslite AL-2") was used. A handrail curing tape according to Example 3 was produced in the same manner.

[Example 4]
As shown in Table 1, the method was the same as in Example 1, except that a rust preventive agent containing an organic phosphate ester as a main component (Cherest Co., Ltd. "Cherest Light P-18T") was used. A handrail curing tape according to Example 4 was produced in the same manner.

[Example 5]
As the tape base material, a nonwoven fabric having a basis weight of 40 g/m ² made of polyester fiber produced by the airlaid method and having no embossed pattern was used. A handrail curing tape according to Example 5 was produced in the same manner as in Example 1, except that it was changed to .

[Example 6]
As the tape base material, it has an embossed pattern consisting of a plurality of dots, and a polyester spunbond nonwoven fabric (basis weight: 40 g/m ² ) that is thermocompressed in the dot part is used. Except for changing the amount of synthetic resin applied as shown in Table 2, changing the thickness of the base material as shown in Table 2, and changing the thickness of the adhesive layer as shown in Table 2. produced a handrail curing tape according to Example 6 in the same manner as in Example 1.

[Example 7]
The basis weight of the tape substrate was changed as shown in Table 2, the impregnation amount of the synthetic resin and the coating amount of the synthetic resin were changed as shown in Table 2, and the thickness of the substrate was shown in Table 2. A handrail curing tape according to Example 7 was produced in the same manner as in Example 1 except that the thickness of the adhesive layer was changed as shown in Table 2.

[Comparative Example 1]
Comparison was performed in the same manner as in Example 1, except that the impregnated amount of the synthetic resin and the amount of the synthetic resin applied were changed as shown in Table 2, and the rust preventive was not added to the pressure-sensitive adhesive layer. A handrail curing tape according to Example 1 was produced.

[Comparative Example 2]
As the tape base material, a flat yarn cloth woven with polyethylene flat yarns as weft yarns was laminated with low-density polyethylene kneaded with a black pigment on the opposite side of the pressure-sensitive adhesive layer by melt extrusion. The thickness of the tape substrate is 110 μm as shown in Table 2.

On the surface opposite to the laminate layer of the tape base material, a two-liquid type adhesive that does not contain a rust inhibitor is mixed and applied in a plurality of strips to cure the handrail in Comparative Example 2. A tape for The two-component adhesive contains a carboxyl group-containing acrylic resin base agent and an epoxy group-containing curing agent.

[Comparative Example 3]
The same method as in Comparative Example 2 except that an oil-soluble rust inhibitor (product name Kileslite Z-7) containing an organic acid amine salt as a main component was used as a rust inhibitor for 100 parts by weight of the adhesive. A handrail curing tape according to Comparative Example 3 was produced.

[Comparative Example 4]
A soft polyvinyl chloride film kneaded with a white pigment was used as the tape base material. The thickness of the tape substrate is 110 μm as shown in Table 2.

A water-dispersed rubber-based pressure-sensitive adhesive that does not contain a rust preventive agent is applied to the entire surface of the tape base material opposite to the surface on which the release agent is applied, to prepare a handrail curing tape of Comparative Example 4. bottom.

[Comparative Example 5]
A transparent polyethylene film with a thickness of 55 μm was used as the tape substrate.

A water-dispersible acrylic pressure-sensitive adhesive containing no rust inhibitor was applied to the entire surface of the tape substrate opposite to the release agent layer to form a pressure-sensitive adhesive layer having a thickness of 10 μm. A handrail curing tape was produced.

[Comparative Example 6]
A handrail curing tape according to Comparative Example 6 was produced in the same manner as in Comparative Example 5, except that a transparent soft polyvinyl chloride film having a thickness of 80 μm was used as the tape base material.

The following physical properties of the handrail-curing tapes of Examples and Comparative Examples produced as described above were tested and evaluated.

[Water resistance test]
In accordance with the A method (low water pressure method) specified in JIS L 1092, a water resistance test was performed on the tape base material impregnated and coated with the synthetic resin used for the handrail curing tape of each example and each comparative example. gone. The results are shown in Tables 1 and 2.

[Moisture permeability test]
A moisture permeability test was conducted on tape substrates impregnated and coated with the synthetic resin used in the handrail curing tapes of each example and each comparative example in accordance with the A method defined in JIS K 7129. For the test, an L80-5000 tester manufactured by Pbi Dansensor was used. The results are shown in Tables 1 and 2.

[Adhesion test]
An adhesive strength test was conducted according to the adhesive strength measurement method (Method 1 using a stainless steel plate) specified in JIS Z 0237. The results are shown in Tables 1 and 2.

[Tensile strength test]
The synthetic resin used for the handrail curing tape of each example and each comparative example was impregnated and A tensile strength test was performed on the coated tape substrate. The results are shown in Tables 1 and 2. Tensile strength was measured in the machine direction of the substrate, ie, the longitudinal direction as the substrate was unwound from the tape roll.

[Permeability test]
In accordance with the Gurley method defined in JIS P 8117, the air permeability test was conducted on the tape substrate impregnated and coated with the synthetic resin used for the handrail curing tape of each example and each comparative example. The results are shown in Tables 1 and 2.

[Elongation test]
In accordance with JIS Z 0237 (test method A for tapes other than filament reinforced tape), the tape substrate impregnated and coated with the synthetic resin used for the handrail curing tape of each example and each comparative example was subjected to an elongation test. gone. The results are shown in Tables 1 and 2. Elongation was measured in the machine direction of the substrate, ie, the longitudinal direction in which the substrate was unwound from the tape roll.

[Visual test]
The tape was adhered to an adherend, an aluminum handrail installed outdoors, as shown in FIG. Subsequent changes were visually observed, and the tape retention properties, adherend staining properties, and substrate durability were evaluated on a three-grade scale. Evaluation criteria for each test item are shown below. The aluminum handrails are installed outdoors and are exposed to sunlight, wind and rain.

Tape retainability ◯: No lifting and peeling from the adherend after being left outdoors for 7 months.
Δ: After being left outdoors for 7 months, peeling is observed in some places.
x: Floating and peeling is occasionally observed after being left outdoors for 7 months.
Staining property to adherend ◯: When the tape was peeled off after curing for 7 months, there was almost no adhesive residue, substrate breakage, sticking marks, or rust.
Δ: When the tape was removed after curing for 7 months, any of adhesive residue, base material breakage, sticking traces, and rust generation was observed here and there.
x: When the tape was removed after curing for 7 months, any of adhesive residue, base material tear, sticking marks, or rust was found here and there.
Base material durability ◯: Almost no damage or breakage after curing for 7 months.
Δ: Scratches and tears are found in some places after curing for 7 months.
x: Scratches and tears are found here and there after curing for 7 months.

As shown in Tables 1 and 2, with the handrail curing tapes of Examples 1 to 7, rust did not occur on the surface of the aluminum handrail even after 7 months had passed after the tape was applied to the handrail. occurrence was not confirmed. On the other hand, with the handrail curing tapes of Comparative Examples 1 to 6, white rust was generated on the surface of the aluminum handrail 7 months after the tape was applied to the aluminum handrail. rice field.

As shown in Table 1, the handrail curing tapes of Examples 1 to 5 showed good results in all the physical property evaluation items shown in Table 1. That is, in the handrail curing tapes of Examples 1 to 5, although the tape was installed outdoors, the tape was not unintentionally peeled off, no adhesive residue was left after the tape was peeled off, and the tape was removed. The tape did not tear easily during the work of attaching it to the adherend, the tape did not scratch or tear due to aging, and the tape did not leave a trace after it was peeled off. There was no white rust left after the tape was removed.

In the tapes of Comparative Examples 4 and 5, marks having the same pattern as the texture of the flat yarn cloth and white rust generated in the portions of the marks were confirmed. In addition, although the tape of Example 6 did not rust, traces of the same pattern as the embossed pattern remained on the aluminum handrail.

With the handrail curing tape of Comparative Example 5, adhesive residue occurred. It is speculated that the addition of the oil-soluble rust preventive prevented the acrylic adhesive from being cured by the curing agent, leaving uncured adhesive on the aluminum handrail. Similarly, even with the handrail curing tape of Comparative Example 6, adhesive residue occurred. It is presumed that the water-dispersed rubber-based adhesive deteriorated due to ultraviolet rays, and the glue remained on the aluminum handrail.

Claims (6)

A handrail curing tape composed of a moisture-permeable tape base material,
The tape base material is made of woven fabric, non-woven fabric, or paper sealed with synthetic resin.
The tape has an adhesive layer containing a rust inhibitor on one side of the tape base material,
A handrail curing tape , wherein the moisture permeability of the tape base material determined according to JIS K 7129 is 30 g/m ² ·day or more. 2. The handrail curing tape according to claim 1, wherein the water resistance of said tape base material determined according to JIS L 1092 is 50 mmAq or more. 3. The handrail curing tape according to claim 1 , wherein the adhesive strength determined according to JIS Z 0237 is 0.1 to 5.0 N/cm, and the adhesive layer exhibits removability. 4. The handrail curing tape according to any one of claims 1 to 3 , wherein the tape substrate is sealed with a synthetic resin having a glass transition temperature of +10°C or lower as determined according to JIS K 6240. 5. The handrail curing tape according to any one of claims 1 to 4 , wherein the tape base material has a tensile strength of 38 N/1.5 cm or more as determined according to JIS Z 0237. A handrail-protecting tape roll obtained by winding the handrail-protecting tape according to any one of claims 1 to 5 .

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