JPH0565461A - Agent for treating side surfaces of wound tape and wound tape - Google Patents

Abstract

PURPOSE:To provide the treating agent containing a mold release agent having a specific physical property, and useful for preventing the mutual blocking of tapes and the adhesion of dust on the side surfaces of the tapes. CONSTITUTION:The objective treating agent containing a mold release agent having a melting point or softening point of >=60 deg.C, preferably one kind or more of mold release agents selected from a group of a natural wax, a fatty acid amide wax, low mol.wt. PE having an average mol.wt. of 500-20000, and low mol.wt. PP having an average mol.wt. of 1000-10000, the mold release agent being preferably emulsified or dispersed in water with a surfactant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side surface treatment of a winding tape, which is useful for coating the side surfaces of a winding tape having adhesiveness to prevent blocking of the tapes and adhesion of dust to the side surfaces. It is related to agents.

[0002]

2. Description of the Related Art In general, tapes such as adhesive tapes and self-bonding tapes are produced by applying an adhesive to a film or sheet as a support and then wrapping it around a cylindrical paper tube as a core. .. At this time, the film or sheet is wound in a stretched state by applying tension. Therefore, the wound tape is compressed inward by the contracting force of the film or sheet, and the adhesive present between the film and sheet leaks to the side surface of the tape. Therefore, dust and the like adhere to the side surface of the winding tape during use. When the winding tape with dust attached is unwound and a predetermined document is attached to an original document or the like, streak lines are generated by the attached dust. This streak line not only impairs the appearance, but also reduces the quality of the copy when it is copied. Furthermore, if the side surfaces of a plurality of tapes are piled up and left to stand, there arises a problem of blocking, in which the tapes are fixed and do not separate with the passage of time, which lowers the commercial value.

Conventionally, in order to solve these problems, there is known an example in which a coating material such as varnish or lacquer is applied to the side surface of the winding tape, but the effect of preventing dust adhesion and blocking is small. In particular, when the wound tape is left for a long time or at a high temperature, the coating layer on the side surface is easily peeled off, and the blocking cannot be prevented for a long time.

There is also known a method of protecting the side surface of the winding tape by sticking a paper or a film called a waste paper on the side surface of the winding tape. However, this method is low in human and time productivity and is high in cost. further,
An example in which an ultraviolet curable resin is applied to the side surface of a winding tape is also known. However, not only is it necessary to use a special resin, but also ultraviolet rays irradiation equipment is required to cure the resin, which increases the cost.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a side surface treating agent for a wound tape, which can be applied to the side surface of the wound tape and can prevent dust from adhering and blocking between tapes for a long time. Especially.

[0006]

As a result of intensive studies, the present inventors have found that when a treating agent containing a release agent is applied to the side surface of a winding tape, a non-adhesive thin film is formed on the surface of the leaked adhesive. The present invention has been completed by finding that the above problems can be solved because contact between adhesives is prevented.

That is, the present invention relates to a side surface treatment of a winding tape which is a treatment agent for treating the side surface having adhesiveness in the winding tape and which contains a release agent having a melting point or a softening point of 60 ° C. or higher. Provide the agent.

The releasing agent is, for example, a natural wax having a melting point of 60 ° C. or higher, a fatty acid amide wax having a melting point of 60 ° C. or higher, a low molecular weight polyethylene having an average molecular weight of 500 to 20,000, and a low molecular weight polypropylene having an average molecular weight of 1,000 to 10,000. It is preferably at least one component selected from the group consisting of: The fatty acid amide wax also includes a wax selected from 12-hydroxystearic acid amide and N-substituted fatty acid polyamide having two or more amide groups. The low molecular weight polyethylene has an acid value of 5 to 100 (mg-K
OH / g) oxidation type polyethylene can also be used.
Further, the release agent may be emulsified or dispersed in water with a surfactant.

The type of the release agent contained in the treating agent of the present invention is not particularly limited as long as it has a melting point or a softening point of 60 ° C. or higher in order to prevent blocking of the wound tape for a long period of time. Polyhydric alcohol esters of higher saturated fatty acids (palmitic acid triglyceride, stearic acid triglyceride, palmitodistearin, etc.), higher saturated fatty acid alkaline earth metal salts (calcium palmitate, aluminum palmitate, calcium stearate, zinc stearate, stearic acid) Copper, lead stearate, aluminum stearate, calcium behenate,
Aluminum behenate). A preferable release agent has a melting point or a softening point of 70 ° C. or higher.
Such release agents include, for example, natural wax, fatty acid amide wax, low molecular weight polyethylene, low molecular weight polypropylene and the like.

The type of the natural wax is not particularly limited, and examples thereof include plant type, animal type, mineral type and petroleum type waxes. As the natural wax, for example,
Candelilla wax, carnauba wax, rice wax, beeswax, montan wax, paraffin wax, microwax, and the like.

The melting point of the natural wax is 60 ° C. or higher,
The temperature is preferably 70 ° C or higher, more preferably 80 ° C or higher. When the melting point of the natural wax is less than 60 ° C., the strength of the film formed on the side surface of the wound tape is lowered, and the softening point of the film is low, so that the natural wax is melted at a high temperature and easily flows down from the side surface.

The fatty acid amide wax includes fatty acid monoamide wax, N-substituted fatty acid monoamide wax, N-substituted fatty acid polyamide wax having two or more amide groups. Further, the N-substituted fatty acid polyamide wax may be either a reaction product of a fatty acid and a polyamine or a reaction product of a polycarboxylic acid and an aliphatic amine.

Examples of the fatty acid monoamide waxes include caproic acid amide, caprylic acid amide, capric acid amide, lauric acid amide, myristic acid amide, palmitic acid amide, stearic acid amide, 12-hydroxystearic acid amide, and arachidic acid amide. And fatty acid amides such as behenic acid amide having a carbon number of about 6 to 25.

Examples of N-substituted fatty acid monoamide waxes include acid amides of alkanolamines having about 6 to 22 carbon atoms and fatty acids having about 6 to 25 carbon atoms such as oleyl stearic acid amide and stearyl stearic acid amide. To be done.

As the N-substituted fatty acid polyamide wax having two or more amide groups, for example, ethylenebislauric acid amide, ethylenebisstearic acid amide,
Ethylene bis oleic acid amide, ethylene bis-12-
Hydroxystearic acid amide, butylene bisstearic acid amide, hexamethylene bisstearic acid amide,
Polyamide of polyethylene polyamine and fatty acid, dioleoyl adipate amide, distearyl adipate amide, dioleyl sebacate amide, distearyl sebacate amide, distearyl terephthalic acid amide, distearyl isophthalic acid amide and the like are exemplified.

The melting point of the fatty acid amide wax is 6
0 ° C or higher, preferably 80 ° C or higher, more preferably 1
It is at least 00 ° C. If the melting point of the wax is less than 60 ° C., the same problems as those of the low melting point natural wax are likely to occur. Examples of the fatty acid amide wax having a melting point of 100 ° C. or higher include 12-hydroxystearic acid amide and N-substituted fatty acid polyamide.

The low molecular weight polyethylene and the low molecular weight polypropylene may have a melting point or a softening point of 60 ° C. or more.

As the low molecular weight polyethylene, for example,
Polyethylene obtained by polymerization of ethylene; polyethylene having a low molecular weight obtained by thermal decomposition of polyethylene for general molding; low molecular weight polyethylene produced as a by-product during production of polyethylene for general molding; oxidized polyethylene obtained by oxidizing polyethylene for general molding Etc. can be used. As the oxidized polyethylene, for example, an acid value of 1 to 150 (mg-
KOH / g), preferably 5-100 (mg-KOH / g)
g) about polyethylene is mentioned.

The low molecular weight polyethylene has a function as a wax, and its average molecular weight is 500 to 2000.
The range is 0, preferably 1000 to 10,000. If the molecular weight is too low, the strength of the film formed on the side surface of the winding tape is reduced, and the softening point of the film is low, so that the film melts at high temperatures and easily flows off from the side surface, and if the molecular weight is too high,
Since the film formation is insufficient, the coating layer is likely to fall off after coating, and the effect of preventing dust adhesion and blocking is reduced.

As the low molecular weight polypropylene, for example, polypropylene obtained by decomposing a commercially available high molecular weight polypropylene into a low molecular weight polypropylene; isotactic polypropylene; atactic polypropylene can be used.

The low molecular weight polypropylene having a function as a wax has an average molecular weight in the range of 1,000 to 10,000. When the molecular weight is out of the above range, the same problems as those of the low molecular weight polyethylene are likely to occur.

Of these releasing agents, fatty acid amide wax, low molecular weight polyethylene and low molecular weight polypropylene generally have high heat resistance and excellent blocking resistance of the wound tape as compared with natural wax.

These release agents may be used alone or in combination of two or more of the same kind or different kinds. When different kinds of release agents are used in combination, the ratio of the other component to one component can be appropriately selected within a wide range, for example, 1 to 99% by weight. Further, release agents having different melting points and different molecular weights may be used in combination.

The treating agent contains a wax component other than the above-mentioned release agent, for example, a higher fatty acid (for example, higher saturated fatty acid such as stearic acid) and its salt, and other wax components such as polyhydric alcohol fatty acid ester. You may stay. The ratio of the release agent to the other wax component can be appropriately selected within a range in which blocking of the wound tape can be suppressed, and for example, release agent / other wax component = 5 to 100/95 to 0.
(% By weight). Further, the treating agent may contain a releasing agent having a melting point or a molecular weight outside the above range as long as the blocking of the wound tape can be suppressed.

The form of the treatment agent of the present invention containing a release agent may be a powdery or solid release agent itself, or a solution system or an emulsion system containing a release agent.

When the treatment agent is the release agent itself, it can be applied to the side surface of the winding tape by heating and melting the release agent.

The solution type treating agent is usually an organic solvent capable of solubilizing the releasing agent, for example, an aromatic solvent such as benzene, toluene or xylene, an aliphatic type solvent such as hexane, heptane or cyclohexane, or an oil. An aromatic solvent,
An ester solvent such as ethyl acetate, a ketone solvent such as methyl ethyl ketone, an alcohol such as isopropanol, or a mixed solvent thereof can be used. The solution-type treating agent can be prepared by mixing the releasing agent and the solvent, preferably under heating. Further, in the solution-based treatment agent, the release agent may be partially dispersed.

A preferred treating agent is an emulsion type treating agent in which a releasing agent is emulsified and dispersed in water with a surfactant.
The emulsion-type treating agent remarkably prevents the attachment of dust and the blocking of the wound tape.

As the surfactant, nonionic type such as alkyl polyoxyethylene ether, alkylphenyl polyoxyethylene ether, fatty acid polyhydric alcohol ester, fatty acid polyhydric alcohol polyoxyethylene, fatty acid sucrose ester; N-ethyl Cation types such as alkaneamido ammonium halide, alkylpyridinium sulfate, and alkyltrimethylammonium halide; sodium alkyl sulfate, sulfuric acid No. 2-
Anionic types such as sodium alkyl, sodium alkylbenzene sulfonate, sodium α-olefin sulfonate, sodium alkyl naphthalene sulfonate, and sodium dialkyl sulfosuccinate; amphoteric types such as alkyl betaine and alkyl diethylene triamine acetic acid can be used. These surfactants can be used alone or in combination with different compounds. Of these surfactants, nonionic surfactants are the most common and give stable emulsions.

The emulsion-type treating agent may contain a hydrophilic solvent such as an alcohol solvent, a ketone solvent, an ether solvent, etc. within a range that does not impair the dispersion stability.

In such an emulsion type treating agent, a uniform film is formed probably because the surface active agent improves the wettability to the side surface of the winding tape and the adhesiveness to the side surface of the winding tape increases. In addition to this, since the surfactant also has an anti-adhesion effect, a synergistic effect can prevent the attachment of dust and blocking of the winding tape.

The content of the release agent in the solution type processing agent and the emulsion type processing agent can be selected within a wide range in consideration of the solubility, dispersibility, coating amount, etc., and is, for example, about 1 to 50% by weight. ..

The treating agent may be a viscosity adjusting agent, a thickening agent, a filler, an antistatic agent, a pH adjusting agent, an additive such as a preservative, or the like; a solvent-soluble polymer, a water-soluble polymer, etc. May be included.

In the present invention, the side surface of the wound tape is treated with the treatment agent. The treatment with the treatment agent can be performed by applying the treatment agent to the side surface of the wound tape according to a conventional coating method such as spray coating, dip coating, or roll coating. In the case of a solution type processing agent and an emulsion type processing agent, it is usually subjected to a drying step after the coating step.

The coating amount of the treating agent can be selected in a wide range as long as a non-adhesive film can be formed on the side surface of the winding tape and is not particularly limited, but for example, 1 to 100 g / m as an active ingredient.
It is about ² .

The present invention further relates to a wound tape whose side surface is treated with the treating agent. This winding tape can prevent dust from adhering to the side surface and can be used as usual without any trouble without adversely affecting the adhesive inside.
Further, even if a plurality of winding tapes are stacked and stacked, blocking can be prevented for a long time. Furthermore, since the non-adhesive film can be formed by a simple operation of applying the treatment agent on the side surface, the productivity is high and the obtained winding tape is inexpensive.

The present invention can be applied to various wound tapes having a sticky side surface, such as polyvinyl chloride, polyethylene, polypropylene, polyester, fluororesin, cellophane,
A film or sheet such as paper is used as a flexible support, an adhesive is applied to the flexible support, and the adhesive tape is wound; a polymer or polymer mixture having self-bonding property, for example, a rubber component. It can be applied to a self-fusing tape or the like in which a film or sheet made of a polymer mixture containing is wound.

[0038]

The side surface treating agent of the present invention can prevent dust from adhering and blocking of tapes from each other for a long period of time.

[0039]

EXAMPLES Hereinafter, the embodiments of the present invention will be specifically illustrated and described based on examples, but the present invention is not limited to these examples. In the following examples and comparative examples, the active ingredient of the solution type treating agent was 10% by weight, and the effective ingredient of the emulsion type treating agent was 20 to 30%.
It was set to% by weight. In the emulsion type treating agent, alkylphenyl polyoxyethylene ether, alkyl polyoxyethylene ether, and fatty acid polyhydric alcohol ester polyoxyethylene ether were used as the surfactant. In addition, the coating amount of each treatment agent is 1 as the active ingredient.
It was set to 5 to 50 g / m ² . In the examples, the adhesiveness of the side surface of the wound tape was evaluated by the following test method.

Method A: 10 winding tapes are stacked and packaged, and 5 packages are left in a thermostatic chamber at 25 ° C. for 2 months. The adhesiveness is evaluated based on the number of 50 rolls that cannot be easily separated.

Method B: 50 ° C. (Examples 1-10 and Comparative Examples 1-6) or 70 ° C. (Examples 11-46 and Comparative Examples 7-)
Evaluation is performed in the same manner as in Method A except that the sample is left in 12).

Examples 1-4 Natural wax-Candelilla wax (melting point 68)
° C, Example 1), beeswax (melting point 64 ° C, Example 2),
Paraffin wax (melting point 65 ° C., Example 3) and rice wax (melting point 75 ° C., Example 4) were each dissolved in benzene to prepare a treating agent. Paper was used as a support, and the obtained treating agents were applied to the side surfaces of the winding tape using a rubber polymer as an adhesive, and after drying,
The tackiness was evaluated by the A method and the B method. The results are shown in Table 1.

Comparative Examples 1 and 2-Natural wax-Natural wax, paraffin wax (melting point: 50 ° C.,
Comparative Example 1) and lanolin (melting point 40 ° C., Comparative Example 2) were each dissolved in toluene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape of Example 1 and dried, and then the tackiness was evaluated by the A method and the B method. The results are shown in Table 1.

Comparative Example 3 The adhesiveness of the wound tape of Example 1 was evaluated by Method A and Method B without applying the treating agent on the side surface. The results are shown in Table 1.

[0045]

[Table 1] Examples 5 and 6-Natural Wax-Natural wax carnauba wax (melting point 84 ° C,
Example 5) and microwax (melting point 90 ° C., Example 6) were each dissolved in toluene to prepare a treating agent.
Each treating agent was applied to the side surface of a wound tape having polyester as a support and acrylic polymer as an adhesive and dried, and then the adhesiveness was evaluated by Method A and Method B. The results are shown in Table 2.

[0046]

[Table 2] Examples 7 and 8-Natural Wax Emulsion-Carnauba wax (melting point 84 ° C) aqueous emulsion (Example 7) and microwax (melting point 90 ° C) aqueous emulsion (Example 8) were respectively supported on paper. The adhesiveness was evaluated by the A method and the B method after being applied on the side surface of a wound tape having a body and an acrylic polymer as an adhesive and dried. The results are shown in Table 3.

[0047]

[Table 3] Example 9-Natural wax-A processing agent was prepared by dissolving a mixture of 80% by weight of paraffin wax (melting point: 65 ° C) and 20% by weight of polyethylene wax in toluene. This treatment agent was applied to the side surface of a self-fusing tape mainly composed of a butyl rubber-polyethylene mixture, dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 4.

Example 10-Natural Wax Emulsion-A mixture of an aqueous emulsion of carnauba wax (melting point 84 ° C.) and an aqueous emulsion of ethylenediamide stearate [carnauba wax / ethylenediamide stearate = 60/40 (weight ratio). )] Was used, and the adhesiveness was evaluated in the same manner as in Example 9. The results are shown in Table 4.

[0049]

[Table 4] Comparative Examples 4 to 6 Untreated winding tape used in Example 5 (Comparative Example 4), untreated winding tape used in Example 7 (Comparative Example 5), and untreated used in Example 9 The adhesiveness of the wound tape of Comparative Example 6 (Comparative Example 6) was evaluated by Method A and Method B. The results are shown in Table 5.

[0050]

[Table 5] From the above results, when the winding tapes are stacked and stacked,
As compared with the untreated wound tape and the wound tape using a natural wax having a low melting point, the wound tape of each example can significantly prevent blocking.

Further, when the wound tapes of Examples 1 to 10 were examined, it was found that the dust was not attached to the side surface and the adhesive inside was not adversely affected, and the tape could be fed out and used as usual.

Examples 11 to 13 -Fatty acid amide wax- As fatty acid amide wax, lauric acid amide (melting point 80 ° C., Example 11), stearic acid amide (melting point 1
00 ° C., Example 12) and 12-hydroxystearic acid amide (melting point 110 ° C., Example 13) were respectively mixed with kerosene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape used in Example 1, dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 6.
Shown in.

Comparative Examples 7 and 8-Fatty Acid Amide Wax-Stearic acid diethanolamide (melting point 45 ° C., Comparative Example 7) and methyl 12-hydroxystearate (melting point 52 ° C., Comparative Example 8) were used as waxes. The tackiness was examined in the same manner as in Example 1. The results are shown in Table 6.

[0054]

[Table 6] Examples 14 to 17-Fatty acid amide wax-Ethylenebislauric acid amide (melting point 157 ° C., Example 14), ethylenebisstearic acid amide (melting point 140
C., Example 15), ethylenebishydroxystearic acid amide (melting point 140 ° C., Example 16), distearyl terephthalic acid amide wax (melting point 160 ° C., Example 1)
Each of 7) was mixed with kerosene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape used in Example 5, dried, and then the tackiness was evaluated by Method A and Method B.
The results are shown in Table 7.

[0055]

[Table 7] Examples 18 to 21-Emulsion of fatty acid amide wax-Aqueous emulsion of ethylenebislauric acid amide (Example 18), Aqueous emulsion of ethylenebisstearic acid amide (Example 19), Aqueous emulsion of ethylenebishydroxystearic acid amide (Example 20),
An aqueous emulsion of distearyl terephthalic acid amide (Example 21) was applied to the side surface of each of the wound tapes used in Example 7 and dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 8.

[0056]

[Table 8] Examples 22 and 23-Fatty acid amide wax-A mixture of 80% by weight of ethylenebislauric acid amide and 20% by weight of paraffin wax (Example 22), 70% by weight of ethylenebisstearamide and 30% by weight of carnauba wax. The mixture (Example 23) was mixed with kerosene to prepare a treating agent. Each treating agent was applied to the side surface of the self-bonding tape used in Example 9,
After drying, the tackiness was evaluated by Method A and Method B. The results are shown in Table 9.

Example 24-Emulsion of fatty acid amide wax-A mixture of an aqueous emulsion of ethylenebisstearic amide and an aqueous emulsion of carnauba wax [ethylenebisstearic amide / carnauba wax =
70/30 (weight ratio)] was used and the tackiness was evaluated in the same manner as in Example 22. The results are shown in Table 9.

[0058]

[Table 9] Comparative Examples 4 to 6, Comparative Examples 7 and 8 and Examples 11 and 2
From the results of No. 4, when the winding tapes are stacked and stacked, the winding tapes of the respective examples are blocked as compared with the untreated winding tape and the winding tape using the fatty acid amide wax having a low melting point. Can be significantly prevented.

Further, when the wound tapes of Examples 11 to 24 were examined, it was found that the dust was not attached to the side surfaces and the adhesive inside was not adversely affected, and the tape could be fed out and used as usual.

Examples 25 to 28 -Polyethylene Wax- As non-oxidizing type polyethylene wax, polyethylene wax having an average molecular weight of 700 (Example 25) and polyethylene wax having an average molecular weight of 2000 (Example 2)
6), a polyethylene wax having an average molecular weight of 8000 (Example 27), and a polyethylene wax having an average molecular weight of 15000 (Example 28) were dissolved in xylene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape used in Example 1, dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 10.

Comparative Examples 9 and 10 -Polyethylene Wax- As a non-oxidizing type polyethylene wax, polyethylene having an average molecular weight of 300 (Comparative Example 10) and an average molecular weight of 3 were used.
Using 0000 polyethylene (Comparative Example 11), each was dissolved in xylene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape of Example 1 and dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 10.

[0062]

[Table 10] Examples 29 to 31-Polyethylene wax-Oxidation type polyethylene wax having an average molecular weight of 1500 (Example 29, oxidation type polyethylene wax having an average molecular weight of 3000 (Example 30), average molecular weight 600)
0 oxidation type polyethylene wax (Example 31)
Was dissolved in xylene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape used in Example 5, dried, and then the tackiness was evaluated by Method A and Method B.
The results are shown in Table 11.

[0063]

[Table 11] Examples 32-34-Polyethylene Wax Emulsion-Aqueous type polyethylene wax aqueous emulsion having an average molecular weight of 1500 (Example 32), average molecular weight of 30.
Aqueous emulsion of polyethylene oxide wax of 00 (Example 33) and aqueous emulsion of polyethylene wax of average molecular weight of 6000 (Example 34) were applied to the side surfaces of the wound tape used in Example 7, respectively. After drying and drying, the tackiness was evaluated by Method A and Method B. The results are shown in Table 12.

[0064]

[Table 12] Examples 35 and 36-Polyethylene Wax-A mixture of 80% by weight of non-oxidizing type polyethylene wax having an average molecular weight of 8000 and 20% by weight of paraffin wax (Example 35), 70% by weight of oxidizing type polyethylene wax having an average molecular weight of 6000. A mixture with 30% by weight of carnauba wax (Example 36) was dissolved in xylene to prepare a treating agent. Each treatment was applied to the side surface of the self-bonding tape used in Example 9 and dried, and then the tackiness was evaluated by the A method and the B method. The results are shown in Table 13.

Example 37-Emulsion of polyethylene wax-A mixture of an aqueous emulsion of an oxidation type polyethylene wax having an average molecular weight of 6000 and an aqueous emulsion of ethylenediamide stearate [polyethylene wax / ethylenediamide stearate = 60/40 (weight: The adhesiveness was evaluated in the same manner as in Example 35, except that [Ratio)] was used. The results are shown in Table 13.

[0066]

[Table 13] Comparative Examples 4 to 6, Comparative Examples 9 and 10 and Examples 25 to
From the result of 37, when the winding tape is piled up and piled up,
As compared with the untreated wound tape and the wound tape using polyethylene wax having a molecular weight outside the specific range, the wound tape of each example can significantly prevent blocking.

Further, when the wound tapes of Examples 25 to 37 were examined, it was found that there was no dust attached to the side surface and the adhesive inside was not adversely affected, and the tape could be fed out and used as usual.

Examples 38 to 40 -Polypropylene wax-Low molecular weight polypropylene having an average molecular weight of 3000 (Example 38), low molecular weight polypropylene having an average molecular weight of 5000 (Example 39), and low molecular weight polypropylene having an average molecular weight of 8000 (Example 40) ) Was dissolved in xylene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape used in Example 1, dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 14.

Comparative Examples 11 and 12-Polypropylene Wax-Low molecular weight polypropylene having an average molecular weight of 600 (Comparative Example 1
1) and low molecular weight polypropylene having an average molecular weight of 30,000 (Comparative Example 12) were respectively dissolved in xylene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape of Example 1 and dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 14.

[0070]

[Table 14] Examples 41 to 43-Emulsion of polypropylene wax-Aqueous emulsion of low molecular weight polypropylene having an average molecular weight of 3000 (Example 41), Aqueous emulsion of low molecular weight polypropylene having an average molecular weight of 5000 (Example 4)
2) and an aqueous emulsion of low molecular weight polypropylene having an average molecular weight of 8000 (Example 43) were applied to the side surface of the winding tape used in Example 5 and dried, and then the tackiness was evaluated by Method A and Method B. did. The results are shown in Table 15.

[0071]

[Table 15] Examples 44 and 45-Polypropylene wax-A mixture of 80% by weight of low molecular weight polypropylene having an average molecular weight of 5000 and 20% by weight of paraffin wax (Example 4).
4), low molecular weight polypropylene 7 having an average molecular weight of 8000
A mixture of 0% by weight and 30% by weight of carnauba wax (Example 45) was dissolved in xylene to prepare a treating agent. Each treating agent was applied to the side surface of the wound tape used in Example 7, dried, and then the tackiness was evaluated by Method A and Method B. The results are shown in Table 16.

Example 46-Polypropylene Wax Emulsion-A mixture of an aqueous emulsion of low molecular weight polypropylene having an average molecular weight of 5000 and an aqueous emulsion of stearic acid ethylenediamide [polypropylene / stearic acid ethylenediamide = 60/40 (weight ratio)]. Adhesiveness was evaluated in the same manner as in Example 44 except that was used. The results are shown in Table 16.

[0073]

[Table 16] Comparative Examples 4 to 6, Comparative Examples 11 and 12 and Example 38
From the results of ~ 46, when the winding tapes are stacked and piled up, the winding of each example is compared with an untreated winding tape or a winding tape using polypropylene wax having a molecular weight outside a specific range. The tape can significantly prevent blocking.

When the wound tapes of Examples 38 to 46 were examined, dust was not attached to the side surfaces, and the tape could be fed out and used as usual without adversely affecting the adhesive inside.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (31) Priority claim number Japanese Patent Application No. 3-22351 (32) Priority date Hei 3 (1991) February 15 (33) Priority claim country Japan (JP)

Claims (6)

[Claims] 1. A side surface treating agent for a winding tape, which is a treating agent for treating the side surface having adhesiveness in the winding tape, and which contains a release agent having a melting point or a softening point of 60 ° C. or higher. 2. The releasing agent comprises a natural wax having a melting point of 60 ° C. or higher, a fatty acid amide wax having a melting point of 60 ° C. or higher, a low molecular weight polyethylene having an average molecular weight of 500 to 20,000, and a low molecular weight polypropylene having an average molecular weight of 1,000 to 10,000. The side surface treating agent for a wound tape according to claim 1, which is at least one component selected from the group. 3. The side surface treatment of the wound tape according to claim 2, wherein the fatty acid amide wax is a wax selected from 12-hydroxystearic acid amide and N-substituted fatty acid polyamide having two or more amide groups. Agent. 4. The low molecular weight polyethylene has an acid value of 5 to 10.
The side surface treating agent for a wound tape according to claim 2, which is an oxidation type of 0 (mg-KOH / g). 5. The side surface treating agent for a wound tape according to claim 1, wherein the release agent is emulsified or dispersed in water with a surfactant. 6. A wound tape, the side surface of which is treated with the side surface treating agent according to claim 1.