JP2003219533A - Wire harness protective material and wire harness using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape-shaped wire harness protective material and a wire harness with the protective material, capable of preventing extreme expedition of degradation of the wire of a wire bundle of the wire harness, and a wire with non-halogen based resin, preferably coated by at least restraining copper induced degradation due to migration of tackifier or copper induced degradation and decrease in age resistor in a coated material which are due to migration of adhesive side deterioration promotion factor and a base side deterioration promotion factor. <P>SOLUTION: An adhesive is applied, at least to one surface of the tape-shaped base made of the non-halogen based resin or vinyl chloride resin in this wire harness protecting material. In the adhesive, one or more resins selected from among hydrogenated terpene resin, an aromatic series hydrogenated resin, an aliphatic hydrogenated resin, a coumarone - indene resin, a phenolic resin, and a styrene resin are included as the tackifier. Preferably, the age resistor and/or copper inhibitor is contained in the adhesive and/or the base. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness protective material and a wire harness using the same, and more particularly to protecting the outer circumference of an electric wire bundle in a wire harness used for wiring automobiles, electric appliances and the like. The present invention relates to a suitable wire harness protection material and a wire harness using the same.

[0002]

2. Description of the Related Art In recent years, high performance and high functionality have been rapidly promoted mainly in automobiles and electric appliances, so that various electronic equipments have been installed in automobiles and electric appliances. There is. In order to operate these facilities accurately, a plurality of electric wires are used for internal wiring of automobiles and electric appliances.

Generally, a plurality of these electric wires are bundled as a bundle of electric wires and used in the form of a so-called wire harness. This wire harness is also called an assembled electric wire, and it is an assembly of multiple electric wires in advance in the form required for wiring. After performing necessary branching, attaching a connector to the terminal, etc., tape shape, tube shape Alternatively, a wire harness protective material having various shapes such as a sheet shape is wound around the outer circumference of the wire bundle to be formed.

As an electric wire used in the above wire harness, a vinyl chloride resin such as polyvinyl chloride added with an additive such as a plasticizer or a heat stabilizer for the purpose of imparting flexibility or moldability is used from copper or the like. An electric wire (hereinafter referred to as "PVC electric wire") coated on the outer periphery of the conductor is widely used.

As the tape-shaped wire harness protection material, for example, a tape-shaped base made of a vinyl chloride resin such as polyvinyl chloride is an adhesive obtained by mixing a natural rubber or a synthetic rubber with a tackifier or a plasticizer. An adhesive tape applied to the surface of the material (hereinafter referred to as "PVC adhesive tape") and the like are widely used.

However, the vinyl chloride resin, which is widely used as a general-purpose resin, has a halogen element in its molecular structure, and thus is harmful when it is burned in the case of a fire of an automobile or the incineration and disposal of electric appliances. However, it has a problem that it emits various halogen-based gases into the atmosphere and causes environmental pollution.

Therefore, recently, as a part of environmental measures, P
BACKGROUND ART Vinyl chloride resins used in VC-based electric wires, PVC-based adhesive tapes and the like have been actively replaced with non-halogen-based resins.

As the substitute resin of this type, for example, a non-halogen flame-retardant olefin resin obtained by adding a predetermined amount of a flame retardant, a copper damage inhibitor, an antiaging agent, etc. to an olefin resin is being considered as a possible alternative candidate.

From such a background, as the electric wire in the wire harness, not only the PVC type electric wire is used alone, but also the electric wire (hereinafter referred to as “HF”) in which the outer circumference of the conductor made of copper or the like is coated with a halogen-free resin. It is a situation in which it is possible that both a "system electric wire") and a PVC electric wire are used in a mixed state, or an HF electric wire is used alone.

On the other hand, for the tape-shaped wire harness protective material, not only the PVC-based adhesive tape is used alone, but also the adhesive tape in which the base material is replaced with a halogen-free resin (hereinafter referred to as "HF-based adhesive tape"). It is a situation in which it is possible that the "adhesive tape") and the PVC adhesive tape are used in a mixed state, or the HF adhesive tape is used alone.

[0011]

By the way, since a wire harness for an automobile is used in a severe environment such as around an engine, the heat aging performance is one of the important factors in quality.

However, the inventors have prepared a wire harness by winding a PVC-based adhesive tape around the outer circumference of a wire bundle consisting of a single HF-based wire or a wire bundle in which HF-based wires and PVC-based wires are mixed. As a result of conducting a heat aging test, it was found that the heat aging performance of the HF-based electric wire in each wire harness was significantly inferior to the heat aging performance of the HF-based electric wire alone.

A wire bundle consisting of an HF-based wire alone, H
HF adhesive tape is wrapped around the outer circumference of the wire bundle in which F-type electric wire and PVC-type electric wire are mixed to produce a wire harness, and a heat aging test is also performed. It has been found that the heat aging performance of the system electric wire is significantly inferior to the heat aging performance of the HF electric wire alone.

Then, the present inventors investigated deterioration of various electric wires in a wire harness formed by winding a tape-shaped wire harness protective material around the outer circumference of various electric wire bundles, and found that the cause was as follows. Came to turn on.

That is, since the tape-shaped wire harness protective material has the structure in which the adhesive is applied to the surface of the base material as described above, the wire harness protective material is used for the outer periphery of various wire bundles. When wrapped around, the wire bundle and the adhesive come into direct contact. Therefore, a so-called transfer occurs in which the tackifier, the plasticizer, and the like contained in the pressure-sensitive adhesive move into the coating material of the HF-based electric wire, diffuse, and permeate.

When the conductor of the HF-based electric wire is made of a copper-based material, the tackifier or plasticizer that has migrated into the coating material acts on the copper to generate a copper ion having a catalytic action.

Usually, the copper ion generated in the coating material of the HF-based electric wire is trapped as a chelate compound by the copper damage inhibitor contained in the coating material in advance, so that its catalytic action is lost. When the ionization of copper is promoted by the tackifier or plasticizer that has migrated into the coating material, the copper damage inhibitor that has been added to the coating material of the HF-based electric wire in advance is consumed in excess of the normally expected amount. There will be a shortage.

Therefore, excess copper ions for the copper anti-corrosion agent are not stabilized as a chelate compound, and the copper ions having a catalytic action break the chemical bond of the non-halogen resin as a coating material to cause deterioration. Accelerated so-called copper damage occurs. As a result, the heat aging performance of the HF-based electric wire in the wire harness is significantly inferior to the heat aging performance of the HF-based electric wire alone.

In addition to the above, the antiaging agent previously added to the coating material of the HF-based electric wire is dissolved / extracted by the tackifier or plasticizer transferred into the coating material, and the antiaging agent is added. Re-migration occurs in which the contained tackifier or plasticizer migrates again to the wire harness protective material side. Therefore, the amount of the anti-aging agent in the coating material decreases beyond the normally assumed decrease amount over time. Also by this, the heat aging performance of the HF-based electric wire in the wire harness is significantly inferior to the heat aging performance of the HF-based electric wire alone.

As described above, in the tape-shaped wire harness protective material, the tackifier contained in the adhesive directly contacting the surface of the electric wire bundle, the plasticizer, and the low content of the covering material deteriorated in the adhesive. It is considered that the molecular weight compound (hereinafter referred to as “adhesive-side deterioration accelerating factor”) has a great influence on the deterioration of the electric wire.

When a base material such as a PVC adhesive tape contains a plasticizer or the like, a low molecular weight compound having a deterioration effect on the plasticizer contained in the base material or the coating material contained in the other base material. It is considered that even if (hereinafter referred to as “base material side deterioration accelerating factor”) migrates into the coating material of the electric wire via the pressure-sensitive adhesive, similar deterioration is caused to some extent.

Therefore, the problem to be solved by the present invention is to suppress at least copper damage caused by the migration of the tackifier, or to migrate the deterioration promoting factor on the adhesive side or the deterioration promoting factor on the substrate side. By suppressing the copper damage and the reduction of the anti-aging agent in the covering material, the tape shape does not significantly accelerate the deterioration of the electric wires in the wire bundle of the wire harness, preferably the electric wires coated with a non-halogen resin. Another object of the present invention is to provide a wire harness protective material and a wire harness using the same.

[0023]

In order to solve this problem, the wire harness protection material according to claim 1 has a halogen element content lower than that of a vinyl chloride resin compound or a halogen-free resin. Alternatively, a tape-shaped base material made of vinyl chloride resin is coated with an adhesive on at least one surface, and the adhesive contains hydrogenated terpene resin, aromatic hydrogenated resin, aliphatic The gist is that one or more resins selected from hydrogenated resins, coumarone-indene resins, phenolic resins and styrene resins are contained as tackifiers.

In the wire harness protection material according to claim 1, as a tackifier contained in a pressure-sensitive adhesive applied to at least one surface of a tape-shaped substrate made of a non-halogen-based resin or a vinyl chloride resin. , One or more specific resins selected from hydrogenated terpene resins, aromatic hydrogenated resins, aliphatic hydrogenated resins, coumarone-indene resins, phenolic resins, styrene resins, that is, a reaction It uses a resin that has low properties and does not easily bond with other atoms or molecules.

Therefore, even if these tackifiers migrate to the coating material of the electric wire, the tackifier does not act on the electric wire conductor made of the copper-based material, and copper ions having a catalytic action are not generated. It becomes possible to prevent or suppress the generation in the coating material. Therefore, it becomes possible to avoid the copper damage caused by the migration of the tackifier, and the deterioration of the electric wires in the electric wire bundle is not significantly promoted.

The wire harness protective material according to claim 2 is the one according to claim 1, wherein the content of the tackifier is 10 to 100 parts by weight of the adhesive main component resin.
The gist is that the amount is within the range of 200 parts by weight.

According to the wire harness protection material of the second aspect, the content of the tackifier made of one or more specific resins selected from the above resins is 100 parts by weight of the adhesive main component resin. On the other hand, since the amount is in the range of 10 to 200 parts by weight, it is possible to secure a sufficient adhesive force, and the winding workability is not impaired.

The wire harness protection material according to claim 3 is the wire harness protection material according to claim 1 or 2, wherein an antiaging agent and / or copper damage prevention is provided in the adhesive and / or the base material. The gist is that the agent is contained.

According to the wire harness protection material of the third aspect, when the adhesive and / or the base material contains an antiaging agent in advance, the wire harness protection material and the covering material are separated from each other. Since it is possible to reduce the concentration gradient of the anti-aging agent between the two, it is possible to prevent or suppress the decrease of the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive side deterioration promoting factor and the base material side deterioration promoting factor. Is possible.

Further, when a copper damage inhibitor is previously contained in the pressure-sensitive adhesive and / or the base material, it is possible to transfer a pressure-sensitive adhesive-side deterioration accelerating factor or a base-material-side deterioration accelerating factor other than the above tackifier. Due to the generation of copper ions in the covering material, the copper damage preventive agent contained in the covering material is consumed thereby, resulting in copper damage. Since a new copper damage inhibitor is supplied to the coating material side, it is possible to reliably avoid copper damage.

Therefore, the effect of using one or more specific resins selected from the above resins as the tackifier, and the anti-aging agent and / or the copper damage inhibitor in the adhesive and / or the base material. By virtue of the synergistic effect with the effect of the inclusion of, it is possible to efficiently prevent the deterioration of the electric wires in the electric wire bundle.

The wire harness protection material according to a fourth aspect is the one according to the third aspect, wherein the adhesive and / or
Alternatively, the content of the anti-aging agent contained in the base material is an electric wire in an electric wire bundle around which the wire harness protective material is wound, and is a coating of an electric wire coated with the non-halogen resin containing the anti-aging agent. The content of the antioxidant contained in the material is within the range of 10% to 500%, and the content of the copper damage inhibitor is 100 parts by weight of the adhesive resin component in the adhesive. In contrast, the gist is that the content is within the range of 0.001 to 5 parts by weight, and within the range of 0.001 to 5 parts by weight with respect to 100 parts by weight of the base resin component in the base material. It is a thing.

According to the wire harness protection material of the fourth aspect, the content ratio of the anti-aging agent contained in the adhesive and / or the base material is in the wire bundle around which the wire harness protection material is wound. Since the electric wire is within the range of 10% to 500% with respect to the content of the antioxidant contained in the covering material of the electric wire coated with the halogen-free resin containing the antiaging agent, the wire harness protective material An anti-aging agent concentration balance is maintained between the side and the dressing side. for that reason,
It is possible to effectively prevent or suppress the decrease of the antioxidant in the coating material due to the migration of the pressure-sensitive adhesive deterioration promoting factor and the base material deterioration promoting factor.

In the adhesive, the content of the copper damage inhibitor is 0.00 based on 100 parts by weight of the adhesive resin component.
In the range of 1 to 5 parts by weight, and in the base material, it is set to 0.001 to 5 parts by weight with respect to 100 parts by weight of the base resin component. The effect of replenishing is great, and the quality of the wire harness protection material itself is not impaired.

Therefore, the effect of using one or more specific resins selected from the above resins as the tackifier, and the antiaging agent and / or the copper damage inhibitor in the adhesive and / or the base material. The synergistic effect with the effect due to the inclusion of is further enhanced, and the deterioration of the electric wires in the electric wire bundle can be prevented more efficiently.

The wire harness protection material according to a fifth aspect is the one according to the fourth aspect, wherein the adhesive and / or
Alternatively, it is a gist that the anti-aging agent contained in the base material and the anti-aging agent contained in the covering material of the electric wire are of the same kind.

According to the wire harness protection material of claim 5, the anti-aging agent contained in the adhesive and / or the base material and the anti-aging agent contained in the covering material of the electric wire are of the same kind. Therefore, it becomes easier to obtain the concentration balance of the antioxidant between the wire harness protective material side and the covering material side,
It is possible to more effectively prevent or suppress the decrease of the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive deterioration promoting factor and the base material deterioration promoting factor.

[0038] A wire harness according to a sixth aspect is characterized in that the wire harness protective material according to the first to fifth aspects is wound around the outer circumference of an electric wire bundle.

According to the wire harness of the sixth aspect, it is possible to obtain a wire harness in which the electric wires in the electric wire bundle are not significantly deteriorated and the quality can be maintained for a long period of time.

A wire harness according to a seventh aspect of the present invention includes the wire harness protective material according to any of the first to fifth aspects, including an antioxidant and having a halogen element content lower than that of a vinyl chloride resin compound or a halogen element. The gist of the present invention is that the wire bundle is wound around the outer circumference of an electric wire bundle having at least an electric wire coated with a non-halogen-based resin.

According to the wire harness of the seventh aspect, even when the electric wire bundle is in a state where the electric wire coated with the non-halogen resin and the electric wire coated with the vinyl chloride resin are mixed, the non-halogen resin is used. It is possible to obtain a wire harness that can maintain the quality for a long period of time without the electric wire covering the wire being significantly deteriorated.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below. The wire harness protective material according to the present invention is to be wound around the wire bundle of a wire harness, and has an adhesive on at least one surface of a tape-shaped substrate made of a halogen-free resin or vinyl chloride resin. It is applied, and this adhesive contains a specific resin as a tackifier.

That is, in the adhesive of the wire harness protective material according to the present invention, hydrogenated terpene resin, aromatic hydrogenated resin, aliphatic hydrogenated resin, coumarone-indene resin, phenolic resin, One or more specific resins selected from styrene resins are contained as a tackifier.

Here, the hydrogenated terpene resin is a hydrogenated terpene resin, and the aromatic hydrogenated resin is C
_The hydrogenated resin obtained by polymerizing ₅ fractions and the aliphatic hydrogenated resin means the hydrogenated resin obtained by polymerizing C ₉ fraction.

Specifically, as the hydrogenated terpene resin,
Poly (β-pinene), polydipentene, poly (α-pinene), α-pinenephenol, dipentenephenol,
Hydrogenated resin containing terpene phenol in the skeleton, aromatic hydrogenated resin, hydrogenated resin containing skeleton indene, styrene, methylindene, α-methylstyrene, etc., aliphatic water Examples of the additive resin include those obtained by hydrogenating a resin having isoprene, cyclopentadiene, 1,3-pentadiene, 1-pentene, 2-pentene, dicyclopentadiene and the like in its skeleton.

The coumarone-indene resin is a resin obtained by polymerizing a coal tar fraction containing a coumarone resin and an indene resin, and the phenolic resin is a resin obtained by polymerizing phenol and its derivative as a main component. The obtained resin and styrene-based resin are resins obtained by polymerizing styrene and its derivative as a main component.

Specifically, the coumarone-indene resin is a resin containing coumarone, indene, styrene, dicyclopentadiene, α-methylstyrene or the like in the skeleton, and the phenolic resin is an alkylphenol such as pt-butylphenol. Examples of the styrene-based resin include resins having a skeleton containing styrene, α-methylstyrene, p-methylstyrene and the like.

These resins can be formed into various compositions depending on the application in consideration of the type of the adhesive main component resin constituting the adhesive, the degree of adhesive strength to be imparted, the cost, etc. In addition, when two or more specific resins are contained as a tackifier in the pressure-sensitive adhesive, two or more different resins selected from the same kind of resin may be contained, or two or more kinds of resins may be contained. Two or more different resins selected from the resins may be contained and are not particularly limited.

Next, as the pressure-sensitive adhesive main component resin constituting the pressure-sensitive adhesive containing the above-mentioned tackifier, a rubber resin mixed with natural rubber or synthetic rubber, acrylic acid or ethyl acrylate, butyl acrylate Acrylic acid composed of a homopolymer containing an acrylic ester such as 2-ethylhexyl acrylate as a main monomer or a copolymer of the main monomer and a monomer such as vinyl acetate or methyl methacrylate. Resins, silicone resins, polyether resins, polyurethane resins and the like can be used. In addition to these tackifiers, various additives such as plasticizers, softeners and fillers may be added to these pressure-sensitive adhesive main component resins within the range not departing from the object of the present invention.

The content of the tackifier contained in such an adhesive is preferably in the range of 10 to 200 parts by weight based on 100 parts by weight of the adhesive main component resin.

When the amount is less than 10 parts by weight, sufficient adhesive strength tends to be unable to be imparted, and when the amount exceeds 200 parts by weight, the workability of winding tends to be deteriorated and it is not preferable for practical use. More preferably, tack,
From the viewpoint of adhesive strength, holding power, etc., it is preferably in the range of 20 to 100 parts by weight.

Next, as the resin forming the tape-shaped substrate to which the adhesive containing the tackifier made of the above-mentioned specific resin is applied, either a non-halogen resin or a vinyl chloride resin is used. You can

Here, the non-halogen resin is a molding material in which a plasticizer, a stabilizer, a filler and the like are mixed with a vinyl chloride resin and kneaded to form a shape easy to mold, that is, containing a halogen element rather than a so-called vinyl chloride resin compound. A resin having a low rate or containing no halogen element.

That is, the non-halogen resin in the present application is not only a resin containing no halogen element at all, but a resin containing a halogen element in the resin structure within a range in which the content of the halogen element is smaller than that of the vinyl chloride resin compound, or This resin, or a resin containing no halogen element at all, conceptually includes a so-called low halogen-based resin such as a resin in which various additives such as a flame retardant containing a halogen element are added.

As such a non-halogen resin,
Specifically, flame retardants containing no halogen elements such as magnesium hydroxide and aluminum hydroxide in olefin resins such as polypropylene, polyethylene and propylene-ethylene copolymer, or bromine elements such as tetrabromobisphenol A and its derivatives. Flame retardants containing halogen elements,
Preferable examples include non-halogen flame-retardant olefin resins and the like to which phenol-based, amine-based antiaging agents, triazine-based derivatives and other copper-damage-preventing agents are added, but other non-halogen-based resins can also be used. It is good and is not particularly limited.

On the other hand, the vinyl chloride resin means a homopolymer of vinyl chloride or a copolymer containing vinyl chloride as a main component, and may be a mixture of one or two or more thereof. Specific examples thereof include polyvinyl chloride, ethylene vinyl chloride copolymer, propylene vinyl chloride copolymer and the like.

It is preferable that at least a predetermined amount of an antioxidant and / or a copper damage inhibitor is contained in such an adhesive and / or substrate.

The fact that the wire harness protective material according to the present invention contains an antioxidant and / or a copper damage inhibitor means that the various resins used for the adhesive and / or the base material are generally used for other purposes. When it is used, it is meant to contain an antioxidant and a copper damage inhibitor even if it is usually not necessary to contain them in each resin.

For example, in general, additives such as plasticizers and heat stabilizers are often added to polyvinyl chloride, and antiaging agents and the like are not added, but according to the present invention. This means that when polyvinyl chloride is used as the base material for the wire harness protection material, it is preferable to add a predetermined amount of an antioxidant or the like.

Here, the anti-aging agent suppresses the aging phenomenon in which the physical properties and chemical properties of the polymer material change due to the environmental factors in which the polymer material is placed and the passage of time, and the performance deteriorates. Or, refers to an organic compound added for delaying. Specifically, tetrakis- [methylene-3-
(3 ', 5'-di-tert-butyl-4'-hydroxyphenyl) propionate] methane, octadecyl-3-
Phenolic compounds such as (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 4,4′-dioctyldiphenylamine, N-phenyl-N′-1,
Examples include amine-based antioxidants such as 3-dimethylbutyl-p-phenylenediamine. In addition, 1 or 2 or more of these antioxidants may be added, and it is not particularly limited.

The content of the anti-aging agent contained in the pressure-sensitive adhesive and / or the base material is the electric wire in the electric wire bundle around which the wire harness protective material is wound, and the non-halogen containing anti-aging agent. 10% to 500% with respect to the content of the antioxidant contained in the coating material of the electric wire coated with the base resin
It is preferable that it is within the range.

If it is less than 10%, the effect of the invention tends to be insufficiently exerted, and if it exceeds 500%, workability tends to be deteriorated and practical use tends to be unpreferable. More preferably, it is preferably in the range of 10% to 150% from the viewpoint of more effectively preventing the antiaging agent on the coating material side from migrating to the wire harness protective material side. At this time, it is preferable that the anti-aging agent contained in the pressure-sensitive adhesive and / or the base material and the anti-aging agent contained in the electric wire coating material are of the same type.

In the above description, the content of the anti-aging agent contained in the coating material of the electric wire coated with the non-halogenated resin containing the anti-aging agent means the organic component constituting the coating material (of the organic component constituting the coating material). Of these, antiaging agents are excluded). Therefore, when the content of the antioxidant contained in the coating material is, for example, 3%,
The anti-aging agent is added to the pressure-sensitive adhesive and / or the base material so that the content of the anti-aging agent contained in the pressure-sensitive adhesive and / or the base material is equivalent to 0.3% to 15%. It will be preferable.

On the other hand, the copper damage inhibitor is usually added to the coating material of the electric wire coated on the outer periphery of the conductor mainly composed of copper, and captures copper ions having a catalytic action as a chelate compound. It is added in order to prevent deterioration of the coating material resin due to copper ions, that is, so-called copper damage, by stabilizing the resin.

Specifically, 1,2,3-benzotriazole, tolyltriazole and its derivative, tolyltriazole amine salt, tolyltriazole potassium salt, 3-
Examples thereof include (N-salicyloyl) amino-1,2,4-triazole, triazine derivatives, hydrazide derivatives such as decamethylenedicarboxylic acid disalicyloyl hydrazide, oxalic acid derivatives, and salicylic acid derivatives. As this kind of copper damage preventing agent, a low melting point type copper damage preventing agent is preferable from the viewpoint that the wire harness protecting material is easily dissolved and easily migrates into the coating material when heated. In addition, 1 or 2 or more of these copper damage inhibitors may be added, and it is not particularly limited.

The content of the copper damage inhibitor contained in the pressure-sensitive adhesive and / or the base material is as follows.
Within the range of 0.001 to 5 parts by weight with respect to 100 parts by weight of the adhesive resin component, and in the base material, within the range of 0.001 to 5 parts by weight with respect to 100 parts by weight of the base resin component. Is preferred.

When the amount is less than 0.001 part by weight, the effect of the invention tends to be insufficiently exerted, and when the amount is more than 5 parts by weight, the additive is precipitated from the resin on the surface and crystallized, that is, so-called bloom. Is caused, and the quality tends to be impaired, which is not preferable. More preferably, from the viewpoint of further enhancing the effect of replenishing the copper anti-corrosion agent into the coating material, it is preferably within the range of 0.01 parts by weight to 5 parts by weight.

Next, the operation of the wire harness protection material according to the present invention will be described.

In the wire harness protective material according to the present invention, water is used as the tackifier contained in the pressure-sensitive adhesive applied to at least one surface of the tape-shaped substrate made of non-halogen resin or vinyl chloride resin. One or more specific resins selected from added terpene resins, aromatic hydrogenated resins, aliphatic hydrogenated resins, coumarone-indene resins, phenolic resins, styrene resins, that is,
A resin that has low reactivity and does not easily bond with other atoms or molecules is used.

Therefore, even when these tackifiers migrate to the coating material of the electric wire, the tackifier does not act on the electric wire conductor made of the copper-based material, and copper ions having a catalytic action are not generated. It becomes possible to prevent or suppress the generation in the coating material. Therefore, it becomes possible to avoid the copper damage caused by the migration of the tackifier, and the deterioration of the electric wires in the electric wire bundle is not significantly promoted.

In addition to this, when the adhesive and / or the base material contains an antiaging agent in advance, the concentration gradient of the antiaging agent between the wire harness protective material side and the covering material side is reduced. Therefore, it becomes possible to prevent or suppress the decrease of the antioxidant in the coating material due to the migration of the pressure-sensitive adhesive deterioration promoting factor and the base material deterioration promoting factor.

At this time, it is preferable that the anti-aging agent contained in the pressure-sensitive adhesive and / or the base material and the anti-aging agent contained in the electric wire coating material are of the same kind. The concentration balance of the anti-aging agent between the wire harness protective material side and the covering material side can be easily obtained, and the anti-aging agent in the covering material due to the migration of the adhesive side deterioration promoting factor and the base material side deterioration promoting factor This is because the reduction can be prevented or suppressed more effectively.

On the other hand, in the case where the pressure-sensitive adhesive and / or the base material contains a copper damage inhibitor in advance, it is possible to transfer a pressure-sensitive adhesive-side deterioration promoting factor or a base-material-side deterioration promoting factor other than the above tackifier. Due to the generation of copper ions in the covering material, the copper damage preventive agent contained in the covering material is consumed thereby, resulting in copper damage. Since a new copper damage inhibitor is supplied to the coating material side, it is possible to reliably avoid copper damage.

Therefore, one or more specific resins selected from the above-mentioned resins are used as a tackifier, and the adhesive and / or the base material further contains an antioxidant and / or a copper damage inhibitor. In the case of, the effect of using a specific resin as a tackifier and the effect of containing an antioxidant and / or a copper damage inhibitor in the adhesive and / or the base material Due to the synergistic effect, it becomes possible to efficiently prevent the deterioration of the electric wires in the electric wire bundle.

At this time, in the wire harness protective material according to the present invention, the content of the tackifier made of a specific resin is 10 to 20 relative to 100 parts by weight of the adhesive main component resin.
It is preferably within the range of 0 parts by weight. This is because a sufficient adhesive strength can be secured and the workability of winding is not impaired.

The content of the anti-aging agent contained in the adhesive and / or the base material is the electric wire in the electric wire bundle around which the wire harness protective material according to the present invention is wound. 10% to 500% of the content of the antioxidant contained in the covering material of the electric wire coated with a non-halogen resin
It is preferable that it is within the range.

A concentration balance of the antiaging agent is maintained between the wire harness protective material side and the covering material side, and the aging prevention in the covering material due to the migration of the adhesive agent side deterioration promoting factor and the base material side deterioration promoting factor This is because it becomes possible to effectively prevent or suppress the decrease of the agent.

On the other hand, the content of the copper damage inhibitor contained in the pressure sensitive adhesive and / or the substrate is 0.001 to 5 parts by weight per 100 parts by weight of the pressure sensitive adhesive resin component in the pressure sensitive adhesive. In the range of 0.001 to 5 parts by weight with respect to 100 parts by weight of the base resin component, the range of 0.001 to 5 parts by weight is preferable.

This is because the effect of replenishing the copper anti-corrosion agent into the coating material is great and the quality of the wire harness protective material itself is not impaired.

Accordingly, when the tackifier contained in the pressure-sensitive adhesive, the antiaging agent and / or the copper damage inhibitor contained in the pressure-sensitive adhesive and / or the base material are in the optimum range as described above, Is more synergistic with the effect of using a specific resin as a tackifier and the effect of containing an antioxidant and / or a copper damage inhibitor in the adhesive and / or the base material. It is possible to prevent deterioration of the electric wires in the electric wire bundle more efficiently.

Next, a wire harness in which the wire harness protective material having the above-mentioned characteristics is wound around the outer circumference of the wire bundle will be described.

As the electric wire bundle in the wire harness according to the present invention, an electric wire bundle in which electric wires coated with a non-halogen resin containing an antioxidant are bundled alone, an electric wire covered with a non-halogen resin containing an anti-aging agent and a chloride An electric wire bundle in which the vinyl resin-coated electric wire and the electric wire covered with the vinyl chloride resin are bundled in a mixed state at an arbitrary ratio, an electric wire bundle in which the electric wires coated with the vinyl chloride resin are individually bundled, and the like can be mentioned, and are particularly limited. In particular, a wire bundle containing at least one wire coated with a non-halogen-based resin containing an antioxidant is preferable from the viewpoint of sufficiently exerting the effects of the above-mentioned wire harness protective material. Can be said.

When an electric wire bundle in which an electric wire coated with a non-halogen resin containing an antiaging agent and an electric wire coated with a vinyl chloride resin are mixed together at an arbitrary ratio is used, a vinyl chloride resin is used. In the covering material of the covered electric wire,
10% to the content of the antioxidant contained in the covering material of the electric wire coated with the non-halogen resin containing the antioxidant
It is preferable to add an antioxidant in advance within the range of 500%. This is to prevent the electric wire coated with the non-halogen-based resin containing the antiaging agent from being deteriorated due to the migration phenomenon occurring between the electric wires.

According to the wire harness of the present invention,
Even if the electric wires in the electric wire bundle are not deteriorated and the electric wires in the electric wire bundle are mixed with the electric wires coated with a non-halogen resin and the vinyl chloride resin, the electric wires in the electric wire bundle An electric wire coated with a non-halogen resin is not significantly deteriorated, and a wire harness that can maintain quality for a long period of time can be obtained.

[0085]

EXAMPLES The present invention will be described in more detail with reference to various examples.

(Electric Wire) First, an electric wire in an electric wire bundle around which an adhesive tape as a wire harness protective material according to an embodiment of the present invention is wound will be described. The following three types of electric wires were produced as electric wires.

The first type is an electric wire (hereinafter referred to as "HF") using a non-halogen resin containing no halogen element as a coating material.
It is called "system electric wire"). As shown in Table 1, 80 parts by weight of magnesium hydroxide as a flame retardant was added to 100 parts by weight of polypropylene, as shown in Table 1.
3 parts by weight of the anti-aging agent and 1 part by weight of the copper damage inhibitor are mixed. The content of the antioxidant contained in the coating material of the HF-based electric wire is (3 parts by weight of the antioxidant) /
(100 parts by weight of polypropylene) × 100 = 3%.

[0088]

[Table 1]

The second type is an electric wire using a vinyl chloride resin as a coating material (hereinafter referred to as "PVC electric wire"). As shown in Table 2, the composition of this PVC-based electric wire coating material is 100 parts by weight of polyvinyl chloride (polymerization degree: 1300), and diisononyl phthalate (DINP) 40 as a plasticizer.
By weight, 20 parts by weight of calcium carbonate as a filler and 5 parts by weight of a stabilizer are mixed. In addition, this PVC
The anti-aging agent is not contained in the covering material of the system electric wire.

[0090]

[Table 2]

The third type is an electric wire using a vinyl chloride resin containing an anti-aging agent as a coating material (hereinafter referred to as "PVC electric wire (containing anti-aging agent)"). As shown in Table 3, the composition of this PVC-based electric wire (containing antiaging agent) is 100 parts by weight of polyvinyl chloride (polymerization degree: 1300) and diisononyl phthalate (DIN) as a plasticizer.
P) 40 parts by weight, 20 parts by weight of calcium carbonate as a filler, 5 parts by weight of stabilizer, and 4.5 parts by weight of antioxidant. And the content rate of the antioxidant contained in the coating material of this PVC-based electric wire (containing the antioxidant) is
(Anti-aging agent 4.5 parts by weight) / (Polyvinyl chloride 100
(Parts by weight + 40 parts by weight of DINP) × 100 = 3.2%. That is, the content of the antioxidant contained in the coating material of the HF-based electric wire is 3%, which is equivalent to about 100%.

[0092]

[Table 3]

All of these three types of electric wires have a diameter of 0.
Cross-sectional area of 0.5 mm by twisting seven 32 mm annealed copper wires
² the conductor outer periphery of which is formed on the copper twisted wire ^(outer diameter 1.0 mm), using an extruder a mixture of a coating material consisting of the formulation shown in Table 1 to Table 3 in each biaxial kneader 0. 3 mm
It is extruded and coated to a thickness. For HF type electric wires, the mixing temperature is 250 ° C and the extrusion temperature is 250 ° C, and PVC type electric wires and PVC type electric wires (containing anti-aging agent)
The mixing temperature was 180 ° C and the extrusion temperature was 180 ° C.

(Test Adhesive Tape as Wire Harness Protecting Material) Next, a test adhesive tape as a wire harness protecting material according to one embodiment of the present invention will be described.
As the test adhesive tape, the following six types of adhesive tapes were produced.

The first type is an example in which a pressure-sensitive adhesive containing a tackifier made of a specific resin and an antiaging agent is applied to one surface of a base material made of a vinyl chloride resin containing an antiaging agent. 1-5 PVC-based adhesive tapes (hereinafter "PVC"
System adhesive tape (containing anti-aging agent) "). Table 4 shows the formulations of the PVC-based pressure-sensitive adhesive tapes of Examples 1 to 5 (containing an antioxidant).

Specifically, the base materials of Examples 1 to 5 were prepared by mixing dioctyl phthalate (DOP) 6 as a plasticizer with 100 parts by weight of polyvinyl chloride (polymerization degree: 1300).
0 parts by weight, 20 parts by weight of calcium carbonate as a filler, 5 parts by weight of a stabilizer, and 0.5 parts of an antioxidant, respectively.
5, 7.5, 12.5 and 25 parts by weight are blended. The contents of the antioxidants contained in the base materials of Examples 1 to 5 are 0.3, 3.1 and 4.
It is 7, 7.8 and 15.6%. That is, HF
Approximately 10%, 100%, 150%, 250 for 3% content of the anti-aging agent contained in the coating material of the system electric wire
%, Which is equivalent to 500%. The base material has a thickness of 0.
It was set to 11 mm.

On the other hand, the adhesives of Examples 1 to 5 were compounded with 70 parts by weight of styrene-butadiene rubber, 30 parts by weight of natural rubber, and 20 parts by weight of zinc white. As a tackifier, 80 parts by weight of hydrogenated terpene resin, and in Example 2, aromatic hydrogenated resin 8
0 parts by weight, in Example 3 80 parts by weight of aliphatic hydrogenated resin,
80 parts by weight of a coumarone-indene resin was blended in Example 4, 80 parts by weight of a phenol resin was blended in Example 5, and 0.6, 6, 9, 14, 28 parts by weight of an antioxidant were further blended. It has become a thing. And these Examples 1-
The content rates of the antioxidant contained in the pressure-sensitive adhesive of No. 5 are 0.3, 3.3, 5, 7.8, and 15.5%, respectively. That is, the content of the antioxidant contained in the coating material of the HF-based electric wire is 3%, about 10%, 100%, respectively.
It is equivalent to 150%, 250% and 500%. still,
The thickness of the adhesive was 0.02 mm.

As a comparison with these Examples 1 to 5,
A comparative example in which the content of the antioxidant contained in the base material and the adhesive in Example 5 is equivalent to about 600% with respect to the content of 3% of the antioxidant contained in the coating material of the HF-based electric wire. It was set to 1. Further, Conventional Product 1 was prepared by adding no antioxidant to the base material and the adhesive and using a rosin resin instead of the specific resin as the tackifier.

[0099]

[Table 4]

The second type is an example in which a pressure-sensitive adhesive containing a tackifier made of a specific resin and an antiaging agent is applied to one surface of a substrate made of a non-halogen resin containing an antiaging agent. 6 to 10 HF adhesive tape (hereinafter referred to as "H
It is referred to as "F-based adhesive tape (containing antiaging agent)").
Table 5 shows the formulations of the HF-based pressure-sensitive adhesive tapes of Examples 6 to 10 (containing an antioxidant).

Specifically, the base materials of Examples 6 to 10 were formulated such that 3 parts by weight of a bromine-based flame retardant, 1.5 parts by weight of antimony trioxide, and an antioxidant were added to 100 parts by weight of polyolefin. 0.4, 3.5, 5.5, 8 and 16 parts by weight are blended. And these Example 6
The contents of the antioxidant contained in the base materials Nos. 10 to 10 are 0.4, 3.4, 5.3, 7.8, and 15.5%, respectively. That is, the content of the antioxidant contained in the coating material of the HF-based electric wire is 3%, and the content is approximately 10%,
It is equivalent to 0%, 150%, 250% and 500%. The base material had a thickness of 0.11 mm.

On the other hand, the formulations of the pressure sensitive adhesives of Examples 6 to 10 were:
70 parts by weight of styrene-butadiene rubber, 30 parts by weight of natural rubber, and 20 parts by weight of zinc white were mixed, and in Example 6, 80 parts by weight of hydrogenated terpene resin as a tackifier made of a specific resin, Example 7 For aromatic hydrogenated resin 8
0 parts by weight, in Example 8 80 parts by weight of aliphatic hydrogenated resin,
80 parts by weight of a coumarone-indene resin was blended in Example 9, 80 parts by weight of a phenol resin was blended in Example 10, and 0.6, 6, 9, 14, 28 parts by weight of an antioxidant were further blended. It has become a thing. And these Example 6
The content rates of the antioxidant contained in the pressure-sensitive adhesives of Nos. 10 to 10 are 0.3, 3.3, 5, 7.8, and 15.5%, respectively. That is, the content of the antioxidant contained in the coating material of the HF-based electric wire is 3%, and the content thereof is about 10% and 100%, respectively.
%, 150%, 250%, and 500%.
The thickness of the adhesive was 0.02 mm.

As a comparison with these Examples 6 to 10, the content of the antioxidant contained in the base material and the adhesive in Example 10 was compared with the content of the antioxidant contained in the coating material of the HF electric wire. Comparative Example 2 was a case where the rate was about 600% with respect to 3%. In addition, Conventional Product 2 was prepared by adding no antioxidant to the base material and the adhesive and using a rosin resin instead of the specific resin as the tackifier.

[0104]

[Table 5]

The third type is obtained by applying a tackifier made of a specific resin and a pressure-sensitive adhesive containing a copper damage inhibitor to one surface of a substrate made of a vinyl chloride resin containing a copper damage inhibitor. The PVC-based adhesive tapes of Examples 11 to 15 (hereinafter referred to as "P
VC type adhesive tape (containing copper damage inhibitor) "). Table 6 shows the formulations of the PVC-based pressure-sensitive adhesive tapes of Examples 11 to 15 (containing a copper damage inhibitor).

Specifically, the base materials of Examples 11 to 15 were compounded by adding dioctyl phthalate (DOP) as a plasticizer to 100 parts by weight of polyvinyl chloride (degree of polymerization: 1300).
60 parts by weight, 20 parts by weight of calcium carbonate as a filler,
Stabilizer 5 parts by weight, and copper damage inhibitor 0.005 each
2, 0.016, 1.6, 4.8, 8 parts by weight are blended. That is, the content of the copper damage inhibitor contained in the base material is determined by the base resin components (polyvinyl chloride and DO).
P) 0.001 and 0.0 for 100 parts by weight, respectively
It is 1, 1, 3, 5 parts by weight. The base material had a thickness of 0.11 mm.

On the other hand, the pressure-sensitive adhesives of Examples 11 to 15 were compounded with 70 parts by weight of styrene-butadiene rubber and 30 parts of natural rubber.
Example 1 was mixed with 20 parts by weight of zinc white.
For 1 is 80 parts by weight of hydrogenated terpene resin as a tackifier made of a specific resin, 80 parts by weight of aromatic hydrogenated resin in Example 12, and 8 parts of aliphatic hydrogenated resin in Example 13.
0 parts by weight, coumarone-indene resin 8 in Example 14
0 part by weight, 80 parts by weight of a phenol resin in Example 15 were added, and a copper damage inhibitor was added in an amount of 0.002, 0.
02, 1.8, 4.8 and 9 parts by weight are blended. That is, the content of the copper damage inhibitor contained in the pressure-sensitive adhesive is 0.001, 0.01, 1 with respect to 100 parts by weight of the pressure-sensitive adhesive resin component (styrene-butadiene rubber, natural rubber and each of the above-mentioned specific resins). It is 3, 5 parts by weight. The thickness of the adhesive was 0.02 mm.

As a comparison with these Examples 11 to 15, the copper damage inhibitor contained in the base material and the adhesive in Example 15 was 7 parts by weight with respect to 100 parts by weight of the base material and the adhesive resin component. This was designated as Comparative Example 3. Further, Conventional Product 3 was prepared by adding no copper inhibitor to the base material and the adhesive and using a rosin resin as the tackifier instead of the above specific resin.

[0109]

[Table 6]

The fourth type is obtained by applying a tackifier made of a specific resin and a pressure-sensitive adhesive containing a copper damage inhibitor to one surface of a substrate made of a non-halogen resin containing a copper damage inhibitor. The HF-based pressure-sensitive adhesive tapes of Examples 16 to 20 (hereinafter referred to as "HF-based pressure-sensitive adhesive tape (containing copper damage inhibitor)"). Table 7 shows the formulations of the HF-based pressure-sensitive adhesive tapes (containing a copper damage inhibitor) of Examples 16 to 20.

Specifically, the base materials of Examples 16 to 20 were compounded with 3 parts by weight of a brominated flame retardant, 1.5 parts by weight of antimony trioxide and 100 parts by weight of a polyolefin, and a copper damage inhibitor. 0.001, 0.01, 1, 3.
It is a mixture of 1 and 5.2 parts by weight. That is, the content of the copper damage inhibitor contained in the base material is 0.001, 0.01, 1, 3, 5 parts by weight with respect to 100 parts by weight of the base resin component (polyolefin and brominated flame retardant), respectively. Has become. The base material had a thickness of 0.11 mm.

On the other hand, the adhesives of Examples 16 to 20 were compounded with 70 parts by weight of styrene-butadiene rubber and 30 parts of natural rubber.
Example 1 was mixed with 20 parts by weight of zinc white.
For 6 is 80 parts by weight of hydrogenated terpene resin as a tackifier made of a specific resin, 80 parts by weight of aromatic hydrogenated resin in Example 17 and 8 parts of aliphatic hydrogenated resin in Example 18.
0 parts by weight, coumarone-indene resin 8 in Example 19
0 part by weight, 80 parts by weight of a phenol resin in Example 20 were added, and a copper damage inhibitor was added in an amount of 0.002, 0.
02, 1.8, 4.8 and 9 parts by weight are blended. That is, the content of the copper damage inhibitor contained in the pressure-sensitive adhesive is 0.001, 0.01, 1 with respect to 100 parts by weight of the pressure-sensitive adhesive resin component (styrene-butadiene rubber, natural rubber and each of the above-mentioned specific resins). It is 3, 5 parts by weight. The thickness of the adhesive was 0.02 mm.

As a comparison with these Examples 16 to 20, the copper damage inhibitor contained in the base material and the adhesive in Example 20 was 7 parts by weight with respect to 100 parts by weight of the base material and the adhesive resin component. This was designated as Comparative Example 4. Further, Conventional Product 4 was prepared by adding no copper damage inhibitor to the base material and the adhesive and using a rosin resin as the tackifier instead of the specific resin.

[0114]

[Table 7]

The fifth type contains a tackifier made of a specific resin, an antioxidant and a copper damage inhibitor on one surface of a substrate made of a vinyl chloride resin containing an antioxidant and a copper damage inhibitor. P of Examples 21 to 25 in which a pressure sensitive adhesive is applied.
It is a VC-based pressure-sensitive adhesive tape (hereinafter referred to as "PVC-based pressure-sensitive adhesive tape (containing antioxidant and copper damage inhibitor)"). Table 8 shows the formulations of the PVC-based adhesive tapes of Examples 21 to 25 (containing an antioxidant and a copper damage inhibitor).

Specifically, the base materials of Examples 21 to 25 were compounded with dioctyl phthalate (DOP) as a plasticizer based on 100 parts by weight of polyvinyl chloride (degree of polymerization: 1300).
60 parts by weight, 20 parts by weight of calcium carbonate as a filler,
Stabilizer 5 parts by weight, antioxidant 5 parts by weight, and copper damage inhibitor 0.002, 0.016, 1.6, 4.
It is a mixture of 8 and 8 parts by weight. That is, the content of the antioxidant contained in the base materials of Examples 21 to 25 was about 100% with respect to the content of 3% of the antioxidant contained in the coating material of the HF-based electric wire. There is. The content of the copper damage inhibitor contained in the base material is 0.001, 0.01, 1, 3, 5 parts by weight with respect to 100 parts by weight of the base resin component (polyvinyl chloride and DOP), respectively. Has become. The base material had a thickness of 0.11 mm.

On the other hand, the pressure-sensitive adhesives of Examples 21 to 25 were compounded with 70 parts by weight of styrene-butadiene rubber and 30 parts of natural rubber.
20 parts by weight of zinc oxide, 6 parts by weight of anti-aging agent, and 80 parts by weight of hydrogenated terpene resin as a tackifier made of a specific resin in Example 21 and aromatic in Example 22. 80 parts by weight of group hydrogenated resin, 80 parts by weight of aliphatic hydrogenated resin in Example 23, 80 parts by weight of coumarone-indene resin in Example 24, and 80 parts by weight of phenolic resin in Example 25. In addition, 0.002, 0.02, 1.8, 4.8 and 9 parts by weight of the copper damage inhibitor are added. That is, these Example 2
The content rate of the antioxidant contained in the pressure-sensitive adhesive of 1 to 25 is
Content of anti-aging agent contained in the covering material of HF-based electric wire 3
It is equivalent to about 100% with respect to%. The content of the copper damage inhibitor contained in the pressure-sensitive adhesive is 0.001 and 0.0, respectively, with respect to 100 parts by weight of the pressure-sensitive adhesive resin component (styrene-butadiene rubber, natural rubber and each of the above specific resins).
It is 1, 1, 3, 5 parts by weight. The thickness of the adhesive was 0.02 mm.

As a comparison with these Examples 21 to 25, the copper damage inhibitor contained in the base material and the adhesive in Example 25 was 7 parts by weight with respect to 100 parts by weight of the base material and the adhesive resin component. This was designated as Comparative Example 5. Also, the anti-aging agent and the copper damage inhibitor are not added to the base material and the adhesive at all,
Moreover, what used rosin type resin instead of the said specific resin as a tackifier was made into the conventional product 5.

[0119]

[Table 8]

The sixth kind contains a tackifier made of a specific resin, an antioxidant and a copper damage inhibitor on one surface of a substrate made of a non-halogen resin containing an antioxidant and a copper damage inhibitor. Examples 26 to 30 in which a pressure sensitive adhesive is applied.
HF adhesive tape (hereinafter referred to as "HF adhesive tape (containing antiaging agent and copper damage inhibitor)"). Table 9 shows the formulations of the HF-based pressure-sensitive adhesive tapes of Examples 26 to 30 (containing an antioxidant and a copper damage inhibitor).

Specifically, the base materials of Examples 26 to 30 were compounded in such a manner that 3 parts by weight of a bromine-based flame retardant, 1.5 parts by weight of antimony trioxide and 3.5 parts of an anti-aging agent were used per 100 parts by weight of polyolefin. Parts by weight, and a copper damage inhibitor of 0.00
It is a mixture of 1, 0.01, 1, 3.1, 5.2 parts by weight. That is, the content of the antioxidant contained in the base materials of Examples 26 to 30 was about 10 with respect to the content of the antioxidant contained in the coating material of the HF-based electric wire of 3%.
It is equivalent to 0%. In addition, the content of the copper damage inhibitor contained in the base material is 0.001 per 100 parts by weight of the base resin component (polyolefin and brominated flame retardant), respectively.
It is 0.01, 1, 3, 5 parts by weight. The base material had a thickness of 0.11 mm.

On the other hand, the compounds of Examples 26 to 30 were compounded with 70 parts by weight of styrene-butadiene rubber and 30 parts of natural rubber.
20 parts by weight of zinc oxide, 6 parts by weight of anti-aging agent, and 80 parts by weight of hydrogenated terpene resin as a tackifier made of a specific resin for Example 26, and aromatic for Example 27. 80 parts by weight of group hydrogenated resin, 80 parts by weight of aliphatic hydrogenated resin in Example 28, 80 parts by weight of coumarone-indene resin in Example 29, and 80 parts by weight of phenolic resin in Example 30. In addition, 0.002, 0.02, 1.8, 4.8 and 9 parts by weight of the copper damage inhibitor are added. That is, these Example 2
The content of the antioxidant contained in the pressure sensitive adhesive of 6 to 30 is
Content of anti-aging agent contained in the covering material of HF-based electric wire 3
It is equivalent to about 100% with respect to%. The content of the copper damage inhibitor contained in the pressure-sensitive adhesive is 0.001 and 0.0, respectively, with respect to 100 parts by weight of the pressure-sensitive adhesive resin component (styrene-butadiene rubber, natural rubber and each of the above specific resins).
It is 1, 1, 3, 5 parts by weight. The thickness of the adhesive was 0.02 mm.

As a comparison with these Examples 26 to 30, the copper damage inhibitor contained in the base material and the adhesive in Example 30 was 7 parts by weight with respect to 100 parts by weight of the base material and the adhesive resin component. This was designated as Comparative Example 6. Also, the anti-aging agent and the copper damage inhibitor are not added to the base material and the adhesive at all,
In addition, a product using a rosin-based resin instead of the above specific resin as a tackifier was designated as Conventional Product 6.

[0124]

[Table 9]

Table 10 shows a list of the above-described electric wire coating materials and adhesive tape materials as wire harness protection materials, together with manufacturers.

[0126]

[Table 10]

(Electric Wire Bundle) Next, an electric wire bundle on which the test adhesive tape as the wire harness protection material according to the embodiment of the present invention is wound will be described. As the electric wire bundle, the following three kinds of electric wire bundles were produced.

The first type is an electric wire bundle (hereinafter referred to as "H", which is a bundle of 30 HF electric wires coated with the coating material shown in Table 1).
It is referred to as a "single F-type electric wire bundle").

The second type is an electric wire in which the PVC electric wire coated with the coating material shown in Table 2 and the HF electric wire coated with the coating material shown in Table 1 are bundled into one at a predetermined mixing ratio. A bundle (hereinafter referred to as a “mixed wire bundle of PVC-based wires and HF-based wires”). At this time, as the mixing ratio, when the ratio of PVC electric wires to HF electric wires (pieces) is 29 (pieces): 1 (pieces), when 20 (pieces): 10 (pieces), 1 (pieces) : 29
Three patterns were prepared for (book).

The third type is a PVC-based electric wire (containing an anti-aging agent) coated with the coating material shown in Table 3 and an HF-based electric wire coated with the coating material shown in Table 1 at a predetermined mixing ratio. It is a bundle of electric wires bundled together (hereinafter referred to as “PVC electric wire (containing antiaging agent) and HF electric wire mixed electric wire bundle”). At this time, as a mixing ratio, the ratio of PVC electric wires (containing an anti-aging agent) to HF electric wires (book) is 29 (book): 1
For (book), 20 (book): 10 (book), 1
(Book): Three patterns of 29 (book) were prepared.

In the second and third types, if only one wire is a different type of electric wire, the electric wires are bundled so as to contact the adhesive of the adhesive tape under test, and 20 (pieces):
In the case of 10 (pieces), consideration was given so that different kinds of electric wires were bundled in a dispersed state. (Sample wire harness)

Next, a test wire harness in which a test adhesive tape as a wire harness protective material according to an embodiment of the present invention is wound around the outer circumference of an electric wire bundle will be described.
As described above, since there are 6 types of test adhesive tapes and 3 types of electric wire bundles, 18 types of test wire harnesses, which are all combinations, were manufactured.

Specifically, the wire harness of Examples W1 to W5 in which the PVC adhesive tape of Examples 1 to 5 (containing an anti-aging agent) is wound around a single HF-based wire bundle.
HF-based adhesive tapes of Examples 6 to 10 (containing antiaging agent)
The wire harness of Examples W6 to W10, the wire harness of Examples W11 to W15, and the HF of Examples 16 to 20 wound with the PVC-based adhesive tape (containing a copper damage inhibitor) of Examples 11 to 15 Example in which a system adhesive tape (containing a copper anti-corrosion agent) is wrapped, Examples in which the wire harness of Examples W16 to W20 and PVC adhesive tape (including an antiaging agent and a copper anti-aging agent) in Examples 21 to 25 are wrapped W21-W
25 is a wire harness of Example 25, and the HF-based adhesive tape of Examples 26 to 30 (containing an antioxidant and a copper damage inhibitor) is wound on the wire harness of Examples W26 to W30. still,
The wire harnesses to which the adhesive tapes of Comparative Examples 1 to 6 and Conventional Products 1 to 6 were respectively wound were used for comparison.

The wire harnesses of Examples W31 to W35 in which the PVC adhesive tape (containing an antioxidant) of Examples 1 to 5 is wound around a mixed wire bundle of PVC and HF wires. Wire harnesses of Examples W36 to W40 wound with HF-based adhesive tapes 6 to 10 (containing anti-aging agent) and PVC-based adhesive tapes of Examples 11 to 15 (containing copper damage inhibitor) Examples W46 to W50 in which the wire harnesses W41 to W45 and the HF-based adhesive tape (containing a copper damage inhibitor) of Examples 16 to 20 are wound.
Wire harness of Examples, wire harnesses of Examples W51 to W55 wound with the PVC-based adhesive tapes of Examples 21 to 25 (containing an antiaging agent and a copper damage preventing agent), and Example 26 to
It is a wire harness of Examples W56 to W60 in which a 30HF adhesive tape (containing an antioxidant and a copper damage inhibitor) is wound. In addition, the wire harnesses in which the respective adhesive tapes of Comparative Examples 1 to 6 and Conventional Products 1 to 6 were respectively wound were used for comparison.

In addition, Examples 1 to 5 are applied to a mixed electric wire bundle of PVC electric wires (containing an antiaging agent) and HF electric wires.
Wire harnesses of Examples W61 to W65 wound with the PVC-based adhesive tape (containing an antioxidant), Examples 6 to 1
No. 0 HF adhesive tape (containing antiaging agent) wound on the wire harness of Examples W66 to W70, Examples 11 to 11.
Wire harnesses of Examples W71 to W75 wound with 15 PVC-based adhesive tapes (containing a copper damage inhibitor), Example 1
The wire harness of Examples W76 to W80 wound with the HF-based pressure-sensitive adhesive tapes (containing the copper damage inhibitor) of 6 to 20 and the PVC-based pressure-sensitive adhesive tapes of Examples 21 to 25 (containing the antioxidant and the copper damage inhibitor). The wound wire harnesses of Examples W81 to W85 and the HF-based adhesive tapes of Examples 26 to 30 (containing an antiaging agent and a copper damage inhibitor) are wound Example W86.
~ It is a wire harness of W90. Comparative examples 1 to 1
6, a wire harness in which the adhesive tapes of the conventional products 1 to 6 are respectively wound is used as a comparison.

(Test Method) Various confirmation tests were conducted using the test wire harness produced as described above. As the contents of the confirmation test, each test wire harness was left in a constant temperature bath of 150 ° C. for 96 hours (hr), then taken out from the constant temperature bath and the test adhesive tape was peeled off. It was wrapped around a mandrel, and it was visually confirmed whether or not cracks were formed in the covering material of the electric wire. The results of this test show whether the workability of winding the test adhesive tape around the wire bundle during the production of the test wire harness is good / defective, and the good / defective adhesiveness of the adhesive during the production of the test adhesive tape. Comprehensive evaluation was conducted with test results. The appearance of the adhesive tapes to which the copper damage inhibitor was added was also evaluated.

(Test Results) 1. A wire harness in which a PVC-based adhesive tape (containing an anti-aging agent) is wrapped around a bundle of HF-based individual wires (hereinafter simply referred to as "HF-based individual wire bundle x PVC-based adhesive tape (containing anti-aging agent)". Unless otherwise indicated, the same applies to other wire harnesses.)

Table 11 shows the test results of a single HF-based electric wire bundle × PVC-based adhesive tape (containing an anti-aging agent). As a result, in the winding test on the mandrel, it was determined that the HF-based electric wire in the wire harness of the conventional product W1 had cracks and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W1 to 5 were not cracked in the winding test on the mandrel. This is because the PVC-based adhesive tapes of Examples 1 to 5 (containing the anti-aging agent)
As a tackifier contained in the adhesive, low reactivity,
It is considered that since a specific resin that is difficult to bond with other atoms or molecules is used, at least copper damage caused by migration of the tackifier can be suppressed. In addition, since the anti-aging agent is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive side deterioration promoting factor and the base material side deterioration promoting factor It is also understood that the decrease is suppressed.

On the other hand, with regard to the tape winding workability and the coating paste property, the PVC adhesive tape of Comparative Example 1 (containing the antiaging agent) was judged to be defective. It is considered that this is because an excessive amount of antiaging agent was incorporated. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 1 to 5 (containing the anti-aging agent) were judged to be good in both tape wrapping workability and coating paste property. It is understood that this is because the antiaging agent was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0141]

[Table 11]

2. HF series electric wire single wire bundle x HF series adhesive tape (with anti-aging agent)

Table 12 shows the test results of a single HF-based electric wire bundle × HF-based adhesive tape (containing an anti-aging agent). As a result, in the winding test on the mandrel, the conventional product W
It was determined that the HF-based electric wire in the wire harness of No. 2 had a crack and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Further, it was determined that the HF-based pressure-sensitive adhesive tape of Conventional Product 2 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W6 to 10 were not cracked in the winding test on the mandrel. This is an HF-based adhesive tape of Examples 6 to 10 (containing an antioxidant).
As a tackifier contained in the pressure-sensitive adhesive, since a specific resin having low reactivity and difficult to bond with other atoms or molecules is used, at least copper damage caused by migration of the tackifier is suppressed. It is understood that it was possible. In addition, since the anti-aging agent is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive side deterioration promoting factor and the base material side deterioration promoting factor It is also understood that the decrease is suppressed.

On the other hand, with respect to the tape winding workability and the coating paste property, the HF adhesive tape of Comparative Example 2 (containing the antiaging agent) was judged to be defective. It is considered that this is because an excessive amount of antiaging agent was incorporated. On the other hand, Example 6
The HF adhesive tapes (containing antiaging agent) of Nos. 10 to 10 were judged to be good in both tape winding workability and coating paste property. It is understood that this is because the antiaging agent was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0147]

[Table 12]

3. HF-based wire single wire bundle x PVC-based adhesive tape (containing copper damage inhibitor)

Table 13 shows the test results of a single HF-based electric wire bundle × PVC-based adhesive tape (containing a copper damage inhibitor). As a result, in the winding test on the mandrel, it was determined that the HF-based electric wire in the wire harness of the conventional product W3 was cracked and defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W11 to 15 were not cracked in the winding test on the mandrel. this is,
The PVC-based pressure-sensitive adhesive tapes of Examples 11 to 15 (containing a copper anti-corrosion agent) were prepared by using, as a tackifier contained in the pressure-sensitive adhesive, a specific resin having low reactivity and being difficult to bond with other atoms or molecules. Therefore, it is considered that at least copper damage caused by migration of the tackifier could be suppressed. Also,
Since the copper damage inhibitor is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, it was consumed due to the migration of the pressure-sensitive adhesive-side deterioration accelerating factor other than the tackifier and the base-material-side deterioration accelerating factor. It is considered that a new copper damage preventing agent was supplied from the adhesive tape side to the covering material side instead of the copper damage preventing agent, and the copper damage could be surely avoided by this.

On the other hand, with respect to the tape winding workability, the tape appearance and the coating paste property, the PVC adhesive tape of Comparative Example 3 (containing the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 11 to 15 (containing the copper damage inhibitor) were judged to have good tape wrapping workability, tape appearance, and pasting property. It is understood that this is because the copper damage inhibitor was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0152]

[Table 13]

4. HF series electric wire single wire bundle x HF series adhesive tape (containing copper damage inhibitor)

Table 14 shows the test results of a single HF-based electric wire bundle × HF-based adhesive tape (containing a copper damage inhibitor). As a result, in the winding test on the mandrel, the conventional product W
It was determined that the HF-based electric wire in the wire harness of No. 4 had a crack and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Further, it was determined that the HF-based pressure-sensitive adhesive tape of Conventional Product 4 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W16 to 20 were not cracked in the winding test on the mandrel. this is,
The HF-based pressure-sensitive adhesive tapes of Examples 16 to 20 (containing a copper damage inhibitor) were prepared by using a specific resin having low reactivity and being difficult to bond with other atoms or molecules as a tackifier contained in the pressure-sensitive adhesive. Therefore, it is considered that at least copper damage caused by migration of the tackifier could be suppressed. Also,
Since the copper damage inhibitor is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, it was consumed due to the migration of the pressure-sensitive adhesive-side deterioration accelerating factor other than the tackifier and the base-material-side deterioration accelerating factor. It is considered that, in place of the copper damage preventing agent, a new copper damage preventing agent was supplied from the adhesive tape side to the covering material side, and by this, the copper damage could be surely avoided.

On the other hand, with respect to the tape winding workability, the tape appearance and the pasting property, the HF-based adhesive tape of Comparative Example 4 (containing the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the HF-based pressure-sensitive adhesive tapes of Examples 16 to 20 (containing the copper anti-corrosion agent) were judged to have good tape wrapping workability, tape appearance, and pasting property. It is understood that this is because the copper damage inhibitor was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0158]

[Table 14]

5. HF-based wire single wire bundle x PVC-based adhesive tape (with antioxidant and copper damage inhibitor)

Table 1 shows the test results of a single HF-based electric wire bundle × PVC-based adhesive tape (containing an antioxidant and a copper damage inhibitor).
5 shows. As a result, in the winding test on the mandrel, it was determined that the HF-based electric wire in the wire harness of the conventional product W5 was cracked and defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W21 to 25 were not cracked in the winding test on the mandrel. this is,
With the effect of using a specific resin as a tackifier contained in the pressure-sensitive adhesive, and the effect of containing an antioxidant and a copper damage inhibitor in a suitable range in the pressure-sensitive adhesive and the base It is considered that the synergistic effect effectively reduced the amount of the antioxidant in the coating material and effectively prevented the copper damage due to copper ions.

On the other hand, regarding the tape winding workability, the tape appearance and the coating paste property, the PVC adhesive tape of Comparative Example 5 (containing the antioxidant and the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 21 to 25 (containing the antiaging agent and the copper damage inhibitor) were judged to have good tape winding workability, tape appearance, and paste application property. It is considered that this is because the antiaging agent and the copper damage inhibitor were blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0163]

[Table 15]

6. HF-based wire single wire bundle x HF-based adhesive tape (containing antioxidant and copper damage inhibitor)

Table 16 shows the test results of a single HF-based electric wire bundle × HF-based adhesive tape (containing an antioxidant and a copper damage inhibitor).
Shown in. As a result, in the winding test on the mandrel, it was determined that the HF-based electric wire in the wire harness of the conventional product W6 was cracked and defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Further, it was determined that the HF adhesive tape of Conventional Product 6 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W26 to 30 were not cracked in the winding test on the mandrel. this is,
With the effect of using a specific resin as a tackifier contained in the pressure-sensitive adhesive, and the effect of containing an antioxidant and a copper damage inhibitor in a suitable range in the pressure-sensitive adhesive and the base It is considered that the synergistic effect effectively reduced the amount of the antioxidant in the coating material and effectively prevented the copper damage due to copper ions.

On the other hand, with respect to the tape winding workability, the tape appearance and the paste application property, the HF adhesive tape of Comparative Example 6 (containing the antioxidant and the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the HF pressure-sensitive adhesive tapes of Examples 26 to 30 (containing the antiaging agent and the copper damage inhibitor) were judged to be good in the tape winding workability, the tape appearance and the paste application property. It is understood that this is because the antiaging agent and the copper damage inhibitor were mixed in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0169]

[Table 16]

7. [A mixed wire bundle of PVC-based wires and HF-based wires] x PVC-based adhesive tape (containing an anti-aging agent)

Table 17 shows the test results of [mixed wire bundle of PVC-based wire and HF-based wire] × PVC-based adhesive tape (containing antioxidant). As a result, in the winding test on the mandrel, 29 pieces of the conventional product W7: 1, 20 pieces:
It was determined that the HF-based electric wire had cracks and was defective regardless of the case of any of the 10 wire harnesses and the 29 wire harnesses. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Above all, in the case of a wire harness in which the ratio of PVC-based wires to HF-based wires is 29: 1
It was confirmed that the F-type electric wire tended to deteriorate severely. This is because the plasticizer contained in the PVC-based electric wire covering material is HF.
It is understood that this is due to the migration into the coating material of the system electric wire.

On the other hand, in the HF type electric wires in the wire harnesses of Examples W31 to 35, no crack was generated in the winding test on the mandrel. this is,
PVC-based adhesive tapes of Examples 1 to 5 (containing antioxidant)
As a tackifier contained in the pressure-sensitive adhesive, since a specific resin having low reactivity and difficult to bond with other atoms or molecules is used, at least copper damage caused by migration of the tackifier is suppressed. It is understood that it was possible. In addition, since the anti-aging agent is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive side deterioration promoting factor and the base material side deterioration promoting factor It is also understood that the decrease is suppressed.

However, also in this case, since the plasticizer contained in the covering material for the PVC electric wire migrates into the covering material for the HF electric wire, it is considered that the HF electric wire deteriorates due to the migration between the electric wires. However, the fact that there was no problem in any of the Examples means that the anti-aging agent in the PVC adhesive tape (containing anti-aging agent) migrated into the coating material of the HF-based electric wire, and the anti-aging agent was present in the coating material. It is understood that the drug was replenished.

On the other hand, the PVC adhesive tape of Comparative Example 1 (containing the anti-aging agent) was judged to be defective in tape winding workability and coating paste property. It is considered that this is because an excessive amount of antiaging agent was incorporated. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 1 to 5 (containing the anti-aging agent) were judged to be good in both tape wrapping workability and coating paste property. It is understood that this is because the antiaging agent was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0176]

[Table 17]

8. [A mixed wire bundle of PVC-based wires and HF-based wires] x HF-based adhesive tape (containing an anti-aging agent)

Table 18 shows the test results of [a mixed electric wire bundle of PVC electric wires and HF electric wires] × HF adhesive tape (containing an antioxidant). As a result, in the winding test on the mandrel, 29 pieces of conventional product W8: 1 piece, 20 pieces: 1 piece
It was determined that the HF-based electric wire was cracked and defective regardless of the case of any of the 0, 1 and 29 wire harnesses. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Above all, in the case of a wire harness in which the ratio of PVC-based wires to HF-based wires is 29: 1
It was confirmed that the F-type electric wire tended to deteriorate severely. This is because the plasticizer contained in the PVC-based electric wire covering material is HF.
It is understood that this is due to the migration into the coating material of the system electric wire.

Further, it was determined that the HF-based adhesive tape of Conventional Product 2 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W36 to 40 were not cracked in the winding test on the mandrel. this is,
HF-based adhesive tapes of Examples 6 to 10 (containing antiaging agent)
As a tackifier contained in the pressure-sensitive adhesive, since a specific resin having low reactivity and difficult to bond with other atoms or molecules is used, at least copper damage caused by migration of the tackifier is suppressed. It is understood that it was possible. In addition, since the anti-aging agent is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive side deterioration promoting factor and the base material side deterioration promoting factor It is also understood that the decrease is suppressed.

However, also in this case, since the plasticizer and the like contained in the PVC electric wire covering material migrate into the HF electric wire covering material, it is considered that the HF electric wire is deteriorated due to the migration between the electric wires. However, the fact that there was no problem in any of the examples means that the anti-aging agent in the HF-based adhesive tape (containing the anti-aging agent) migrates into the coating material of the HF-based electric wire and prevents the aging in the coating material. It is understood that the drug was replenished.

On the other hand, with respect to the tape winding workability and the coating paste property, the HF adhesive tape of Comparative Example 2 (containing the antiaging agent) was judged to be defective. It is considered that this is because an excessive amount of antiaging agent was incorporated. On the other hand, Example 6
The HF adhesive tapes (containing antiaging agent) of Nos. 10 to 10 were judged to be good in both tape winding workability and coating paste property. It is understood that this is because the antiaging agent was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0184]

[Table 18]

9. [A mixed wire bundle of PVC-based wires and HF-based wires] x PVC-based adhesive tape (containing a copper damage inhibitor)

Table 19 shows the test results of [mixed electric wire bundle of PVC electric wire and HF electric wire] × PVC adhesive tape (containing copper damage inhibitor). As a result, in the winding test on the mandrel, 29 pieces of the conventional product W9: 1, 20 pieces:
It was determined that the HF-based electric wire had cracks and was defective regardless of the case of any of the 10 wire harnesses and the 29 wire harnesses. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

[0187] Above all, in the case of a wire harness in which the ratio of PVC-based wires to HF-based wires is 29: 1,
It was confirmed that the F-type electric wire tended to deteriorate severely. This is because the plasticizer contained in the PVC-based electric wire covering material is HF.
It is understood that this is due to the migration into the coating material of the system electric wire.

On the other hand, the HF type electric wires in the wire harnesses of Examples W41 to 45 did not show any cracks in the winding test on the mandrel. this is,
The PVC-based pressure-sensitive adhesive tapes of Examples 11 to 15 (containing a copper anti-corrosion agent) were prepared by using, as a tackifier contained in the pressure-sensitive adhesive, a specific resin having low reactivity and being difficult to bond with other atoms or molecules. Therefore, it is considered that at least copper damage caused by migration of the tackifier could be suppressed. Also,
Since the copper damage inhibitor is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, it was consumed due to the migration of the pressure-sensitive adhesive-side deterioration accelerating factor other than the tackifier and the base-material-side deterioration accelerating factor. It is considered that a new copper damage preventing agent was supplied from the adhesive tape side to the covering material side instead of the copper damage preventing agent, and the copper damage could be surely avoided by this.

However, also in this case, since the plasticizer and the like contained in the PVC electric wire covering material migrate into the HF electric wire covering material, it is considered that the HF electric wire is deteriorated due to the migration between the electric wires. However, the fact that there was no problem in any of the Examples means that the copper damage inhibitor in the PVC adhesive tape (containing the copper damage inhibitor) migrated into the covering material of the HF electric wire, It is considered that the copper anti-corrosion agent was replenished.

On the other hand, with respect to the tape winding workability, the tape appearance and the coating paste property, the PVC adhesive tape of Comparative Example 3 (containing the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 11 to 15 (containing the copper damage inhibitor) were judged to have good tape wrapping workability, tape appearance, and pasting property. It is understood that this is because the copper damage inhibitor was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0191]

[Table 19]

10. [Mixed wire bundle of PVC-based wires and HF-based wires] x HF-based adhesive tape (containing copper damage inhibitor)

Table 20 shows the test results of [mixed electric wire bundle of PVC electric wire and HF electric wire] × HF adhesive tape (containing copper damage inhibitor). In the winding test on the mandrel, 29 pieces of conventional product W10: 1, 20 pieces: 10 pieces, 1 piece
Book: In any of the 29 wire harnesses, the HF-based electric wire was cracked and determined to be defective. This is because the accelerating factor on the adhesive side and the accelerating factor on the substrate side are HF.
It is considered that the migration to the coating material of the system electric wire resulted in copper damage and a decrease in the anti-aging agent in the coating material.

Above all, in the case of a wire harness in which the ratio of PVC-based wires to HF-based wires is 29: 1
It was confirmed that the F-type electric wire tended to deteriorate severely. This is because the plasticizer contained in the PVC-based electric wire covering material is HF.
It is understood that this is due to the migration into the coating material of the system electric wire.

Further, it was determined that the HF-based adhesive tape of Conventional Product 4 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W46 to 50 were not cracked in the winding test on the mandrel. this is,
The HF-based pressure-sensitive adhesive tapes of Examples 16 to 20 (containing a copper damage inhibitor) were prepared by using a specific resin having low reactivity and being difficult to bond with other atoms or molecules as a tackifier contained in the pressure-sensitive adhesive. Therefore, it is considered that at least copper damage caused by migration of the tackifier could be suppressed. Also,
Since the copper damage inhibitor is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, it was consumed due to the migration of the pressure-sensitive adhesive-side deterioration accelerating factor other than the tackifier and the base-material-side deterioration accelerating factor. It is considered that, in place of the copper damage preventing agent, a new copper damage preventing agent was supplied from the adhesive tape side to the covering material side, and by this, the copper damage could be surely avoided.

However, also in this case, since the plasticizer and the like contained in the covering material for the PVC electric wire migrates into the covering material for the HF electric wire, it is considered that the HF electric wire is deteriorated due to the migration between the electric wires. However, the fact that there was no problem in any of the examples means that the copper damage inhibitor in the HF adhesive tape (containing the copper damage inhibitor) migrated into the covering material of the HF electric wire, and It is considered that the copper anti-corrosion agent was replenished.

On the other hand, regarding the tape winding workability, the tape appearance and the coating paste property, the HF-based adhesive tape of Comparative Example 4 (containing the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the HF-based pressure-sensitive adhesive tapes of Examples 16 to 20 (containing the copper anti-corrosion agent) were judged to have good tape wrapping workability, tape appearance, and pasting property. It is understood that this is because the copper damage inhibitor was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0199]

[Table 20]

11. [Mixed wire bundle of PVC-based wires and HF-based wires] x PVC-based adhesive tape (containing antioxidant and copper damage inhibitor)

Table 21 shows the test results of [mixed wire bundle of PVC-based wire and HF-based wire] × PVC-based adhesive tape (containing antioxidant and copper damage inhibitor). As a result, in the winding test on the mandrel, 29
In the case of any of the wire harnesses of 1, 1, 20, 10, and 29, it was determined that the HF-based electric wire was cracked and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Above all, in the case of a wire harness in which the ratio of PVC-based wires to HF-based wires is 29: 1
It was confirmed that the F-type electric wire tended to deteriorate severely. This is because the plasticizer contained in the PVC-based electric wire covering material is HF.
It is understood that this is due to the migration into the coating material of the system electric wire.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W51 to 55 were not cracked in the winding test on the mandrel. this is,
With the effect of using a specific resin as a tackifier contained in the pressure-sensitive adhesive, and the effect of containing an antioxidant and a copper damage inhibitor in a suitable range in the pressure-sensitive adhesive and the base It is considered that the synergistic effect effectively reduced the amount of the antioxidant in the coating material and effectively prevented the copper damage due to copper ions.

However, also in this case, since the plasticizer contained in the covering material for the PVC electric wire migrates into the covering material for the HF electric wire, it is considered that the HF electric wire is deteriorated due to the migration between the electric wires. However, the fact that there was no problem in any of the Examples means that the anti-corrosion agent and the copper anti-corrosion agent in the PVC adhesive tape (containing the anti-corrosion agent and the copper anti-corrosion agent) are in the coating material of the HF-based electric wire. It is understood that this is due to the fact that the anti-aging agent and the copper damage inhibitor were replenished in the coating material.

On the other hand, regarding the tape winding workability, the tape appearance and the coating paste property, the PVC adhesive tape of Comparative Example 5 (containing the antioxidant and the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 21 to 25 (containing the antiaging agent and the copper damage inhibitor) were judged to have good tape winding workability, tape appearance, and paste application property. It is considered that this is because the antiaging agent and the copper damage inhibitor were blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0206]

[Table 21]

12. [A mixed wire bundle of PVC-based electric wires and HF-based electric wires] x HF-based adhesive tape (containing an antioxidant and a copper damage inhibitor)

Table 22 shows the test results of [mixed wire bundle of PVC-based wire and HF-based wire] × HF-based adhesive tape (containing antiaging agent and copper damage inhibitor). As a result, in the winding test on the mandrel, 29 pieces of the conventional product W12:
It was determined that the HF-based electric wire was cracked and defective regardless of whether the wire harness was 1, 20, 10 or 1, 29. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

[0209] Above all, in the case of a wire harness in which the ratio of PVC-based wires to HF-based wires is 29: 1
It was confirmed that the F-type electric wire tended to deteriorate severely. This is because the plasticizer contained in the PVC-based electric wire covering material is HF.
It is understood that this is due to the migration into the coating material of the system electric wire.

Further, it was determined that the HF adhesive tape of Conventional Product 6 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W56 to 60 were not cracked in the winding test on the mandrel. this is,
With the effect of using a specific resin as a tackifier contained in the pressure-sensitive adhesive, and the effect of containing an antioxidant and a copper damage inhibitor in a suitable range in the pressure-sensitive adhesive and the base It is considered that the synergistic effect effectively reduced the amount of the antioxidant in the coating material and effectively prevented the copper damage due to copper ions.

However, also in this case, since the plasticizer and the like contained in the PVC electric wire covering material migrate into the HF electric wire covering material, it is considered that the HF electric wire deteriorates due to the migration between the electric wires. However, the fact that there was no problem in any of the examples means that the anti-aging agent and the anti-copper agent in the HF-based adhesive tape (containing the anti-aging agent and the anti-copper agent) are coating materials for HF-based electric wires. It is believed that the copper was transferred to the inside and the copper anti-corrosion agent was added to the coating material.

On the other hand, regarding the tape winding workability, the tape appearance and the coating paste property, the HF-based adhesive tape of Comparative Example 6 (containing the antiaging agent and the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the HF pressure-sensitive adhesive tapes of Examples 26 to 30 (containing the antiaging agent and the copper damage inhibitor) were judged to be good in the tape winding workability, the tape appearance and the paste application property. It is understood that this is because the antiaging agent and the copper damage inhibitor were mixed in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0214]

[Table 22]

13. [PVC electric wire (with anti-aging agent)
And HF-based electric wire mixed wire bundle] x PVC-based adhesive tape (containing antioxidant)

[PVC Electric Wire (with Antiaging Agent) and H
Table 23 shows the test results of mixed electric wire bundle of F type electric wire] × PVC type adhesive tape (containing antiaging agent). As a result, in the winding test around the mandrel, 2
It was determined that the HF-based electric wire was cracked and was defective regardless of the case of any of the 9: 1, 20: 10 and 1: 29 wire harnesses. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W61 to 65 did not show any cracks in the winding test on the mandrel. this is,
PVC-based adhesive tapes of Examples 1 to 5 (containing antioxidant)
As a tackifier contained in the pressure-sensitive adhesive, since a specific resin having low reactivity and difficult to bond with other atoms or molecules is used, at least copper damage caused by migration of the tackifier is suppressed. It is understood that it was possible. In addition, since the anti-aging agent is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive side deterioration promoting factor and the base material side deterioration promoting factor It is also understood that the decrease is suppressed.

In addition to the above, in this embodiment,
Since PVC-based electric wire (containing anti-aging agent) is used, P
Even if the plasticizer or the like contained in the covering material of the VC electric wire (containing the anti-aging agent) is transferred to the covering material of the HF electric wire, the deterioration of the covering material of the HF electric wire due to the transfer between the electric wires is prevented. It is understood that the effect of being able to do it was great.

On the other hand, regarding the tape winding workability and the paste application property, the PVC adhesive tape of Comparative Example 1 (containing the antiaging agent) was judged to be defective. It is considered that this is because an excessive amount of antiaging agent was incorporated. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 1 to 5 (containing the anti-aging agent) were judged to be good in both tape wrapping workability and coating paste property. It is understood that this is because the antiaging agent was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0220]

[Table 23]

14. [PVC electric wire (with anti-aging agent)
And HF-based electric wire mixed wire bundle] x HF-based adhesive tape (containing anti-aging agent)

[PVC Electric Wire (with Antiaging Agent) and H
Table 24 shows the test results of a mixed electric wire bundle of F-based electric wires] × HF-based adhesive tape (containing an antioxidant). As a result, in the winding test on the mandrel, 29 of the conventional product W14 was used.
In the case of any of the wire harnesses of 1, 1, 20, 10, and 29, it was determined that the HF-based electric wire was cracked and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Further, it was determined that the HF adhesive tape of Conventional Product 2 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W66 to W70 were not cracked in the winding test on the mandrel. this is,
HF-based adhesive tapes of Examples 6 to 10 (containing antiaging agent)
As a tackifier contained in the pressure-sensitive adhesive, since a specific resin having low reactivity and difficult to bond with other atoms or molecules is used, at least copper damage caused by migration of the tackifier is suppressed. It is understood that it was possible. In addition, since the anti-aging agent is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, the anti-aging agent in the coating material due to the migration of the pressure-sensitive adhesive side deterioration promoting factor and the base material side deterioration promoting factor It is also understood that the decrease is suppressed.

In addition to the above, in this embodiment,
Since PVC-based electric wire (containing anti-aging agent) is used, P
Even if the plasticizer or the like contained in the covering material of the VC electric wire (containing the anti-aging agent) is transferred to the covering material of the HF electric wire, the deterioration of the covering material of the HF electric wire due to the transfer between the electric wires is prevented. It is understood that the effect of being able to do it was great.

On the other hand, regarding the tape winding workability and the coating paste property, the HF adhesive tape of Comparative Example 2 (containing the antiaging agent) was judged to be defective. It is considered that this is because an excessive amount of antiaging agent was incorporated. On the other hand, Example 6
The HF adhesive tapes (containing antiaging agent) of Nos. 10 to 10 were judged to be good in both tape winding workability and coating paste property. It is understood that this is because the antiaging agent was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0227]

[Table 24]

15. [PVC electric wire (with anti-aging agent)
And HF-based wire mixed wire bundle] x PVC-based adhesive tape (containing copper damage inhibitor)

[PVC Electric Wire (with Antiaging Agent) and H
Table 25 shows the test results of a mixed electric wire bundle of F-based electric wires] × PVC-based adhesive tape (containing a copper damage inhibitor). In the winding test on the mandrel, 29 pieces of conventional product W15: 1
In any of the wire harnesses of 20 pieces, 10 pieces, and 1 piece: 29 pieces, it was determined that the HF-based electric wire had a crack and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

On the other hand, the HF type electric wires in the wire harnesses of Examples W71 to W75 were not cracked in the winding test on the mandrel. this is,
The PVC-based pressure-sensitive adhesive tapes of Examples 11 to 15 (containing a copper anti-corrosion agent) were prepared by using, as a tackifier contained in the pressure-sensitive adhesive, a specific resin having low reactivity and being difficult to bond with other atoms or molecules. Therefore, it is considered that at least copper damage caused by migration of the tackifier could be suppressed. Also,
Since the copper damage inhibitor is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, it was consumed due to the migration of the pressure-sensitive adhesive-side deterioration accelerating factor other than the tackifier and the base-material-side deterioration accelerating factor. It is considered that a new copper damage preventing agent was supplied from the adhesive tape side to the covering material side instead of the copper damage preventing agent, and the copper damage could be surely avoided by this.

In addition to the above, in this embodiment,
Since PVC-based electric wire (containing anti-aging agent) is used, P
Even if the plasticizer or the like contained in the covering material of the VC electric wire (containing the anti-aging agent) is transferred to the covering material of the HF electric wire, the deterioration of the covering material of the HF electric wire due to the transfer between the electric wires is prevented. It is understood that the effect of being able to do it was great.

On the other hand, regarding the tape winding workability, the tape appearance and the pasting property, the PVC adhesive tape of Comparative Example 3 (containing the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 11 to 15 (containing the copper damage inhibitor) were judged to have good tape wrapping workability, tape appearance, and pasting property. It is understood that this is because the copper damage inhibitor was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0233]

[Table 25]

16. [PVC electric wire (with anti-aging agent)
And HF-based electric wire mixed wire bundle] x HF-based adhesive tape (containing copper damage inhibitor)

[PVC Electric Wire (with Antiaging Agent) and H
Table 26 shows the test results of a mixed electric wire bundle of F-based electric wires] × HF-based adhesive tape (containing a copper damage inhibitor). In the winding test on the mandrel, 29 pieces of conventional product W16: 1 piece,
In any of the wire harnesses of 20: 10 and 1: 29, it was determined that the HF electric wire had a crack and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Further, it was determined that the HF adhesive tape of Conventional Product 4 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W76 to 80 were not cracked in the winding test on the mandrel. this is,
The HF-based pressure-sensitive adhesive tapes of Examples 16 to 20 (containing a copper damage inhibitor) were prepared by using a specific resin having low reactivity and being difficult to bond with other atoms or molecules as a tackifier contained in the pressure-sensitive adhesive. Therefore, it is considered that at least copper damage caused by migration of the tackifier could be suppressed. Also,
Since the copper damage inhibitor is contained in the pressure-sensitive adhesive and the base material in advance in a suitable range, it was consumed due to the migration of the pressure-sensitive adhesive-side deterioration accelerating factor other than the tackifier and the base-material-side deterioration accelerating factor. It is considered that, in place of the copper damage preventing agent, a new copper damage preventing agent was supplied from the adhesive tape side to the covering material side, and by this, the copper damage could be surely avoided.

In addition to the above, in this embodiment,
Since PVC-based electric wire (containing anti-aging agent) is used, P
Even if the plasticizer or the like contained in the covering material of the VC electric wire (containing the anti-aging agent) is transferred to the covering material of the HF electric wire, the deterioration of the covering material of the HF electric wire due to the transfer between the electric wires is prevented. It is understood that the effect of being able to do it was great.

On the other hand, regarding the tape winding workability, the tape appearance and the pasting property, the HF adhesive tape of Comparative Example 4 (containing the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the HF-based pressure-sensitive adhesive tapes of Examples 16 to 20 (containing the copper anti-corrosion agent) were judged to have good tape wrapping workability, tape appearance, and pasting property. It is understood that this is because the copper damage inhibitor was blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0240]

[Table 26]

17. [PVC electric wire (with anti-aging agent)
And HF-based wire mixed wire bundle] x PVC-based adhesive tape (containing antioxidant and copper damage inhibitor)

[PVC Electric Wire (with Antiaging Agent) and H
Mixed electric wire bundle of F-based electric wire] × PVC adhesive tape (containing antioxidant and copper damage inhibitor) is shown in Table 27.
As a result, in the winding test around the mandrel, 29 pieces of conventional product W17: 1, 20 pieces: 10 pieces, and 1 piece: 2
In the case of any of the 9 wire harnesses, H
It was determined that the F-type electric wire had cracks and was defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W81 to 85 did not crack in the winding test on the mandrel. this is,
With the effect of using a specific resin as a tackifier contained in the pressure-sensitive adhesive, and the effect of containing an antioxidant and a copper damage inhibitor in a suitable range in the pressure-sensitive adhesive and the base It is considered that the synergistic effect effectively reduced the amount of the antioxidant in the coating material and effectively prevented the copper damage due to copper ions.

In addition to the above, in this embodiment,
Since PVC-based electric wire (containing anti-aging agent) is used, P
Even if the plasticizer or the like contained in the covering material of the VC electric wire (containing the anti-aging agent) is transferred to the covering material of the HF electric wire, the deterioration of the covering material of the HF electric wire due to the transfer between the electric wires is prevented. It is understood that the effect of being able to do was also great

On the other hand, regarding the tape winding workability, the tape appearance and the coating paste property, the PVC adhesive tape of Comparative Example 5 (containing the antioxidant and the copper damage inhibitor) was judged to be defective. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the PVC-based pressure-sensitive adhesive tapes of Examples 21 to 25 (containing the antiaging agent and the copper damage inhibitor) were judged to have good tape winding workability, tape appearance, and paste application property. It is considered that this is because the antiaging agent and the copper damage inhibitor were blended in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0246]

[Table 27]

18. [PVC electric wire (with anti-aging agent)
And HF-based electric wire mixed wire bundle] x HF-based adhesive tape (containing antioxidant and copper damage inhibitor)

[PVC Electric Wire (with Antiaging Agent) and H
Table 28 shows the test results of a mixed electric wire bundle of F type electric wires] × HF type adhesive tape (containing an antiaging agent and a copper damage preventing agent). As a result, in the winding test around the mandrel, 29 pieces of the conventional product W18: 1, 20 pieces: 10 pieces, and 1 piece: 29
In any of the wire harnesses of the book, the HF-based electric wire in each wire harness was determined to be cracked and defective. It is considered that this is because the adhesive-side deterioration accelerating factor and the substrate-side deterioration accelerating factor migrated into the coating material of the HF-based electric wire, which resulted in copper damage and a decrease in the antioxidant in the coating material. To be done.

Further, it was determined that the HF adhesive tape of Conventional Product 6 itself had cracks and was defective. It is considered that this is because the deterioration promoting factor on the pressure sensitive adhesive side was transferred from the pressure sensitive adhesive side to the substrate side.

On the other hand, the HF-based electric wires in the wire harnesses of Examples W26 to 30 were not cracked in the winding test on the mandrel. this is,
With the effect of using a specific resin as a tackifier contained in the pressure-sensitive adhesive, and the effect of containing an antioxidant and a copper damage inhibitor in a suitable range in the pressure-sensitive adhesive and the base It is considered that the synergistic effect effectively reduced the amount of the antioxidant in the coating material and effectively prevented the copper damage due to copper ions.

In addition to the above, in this embodiment,
Since PVC-based electric wire (containing anti-aging agent) is used, P
Even if the plasticizer or the like contained in the covering material of the VC electric wire (containing the anti-aging agent) is transferred to the covering material of the HF electric wire, the deterioration of the covering material of the HF electric wire due to the transfer between the electric wires is prevented. It is understood that the effect of being able to do was also great

On the other hand, the HF adhesive tape of Comparative Example 6 (containing the antiaging agent and the copper damage inhibitor) was judged to be defective in tape winding workability, tape appearance, and coating paste property. It is understood that this is because an excessive copper damage inhibitor was blended. On the other hand, the HF pressure-sensitive adhesive tapes of Examples 26 to 30 (containing the antiaging agent and the copper damage inhibitor) were judged to be good in the tape winding workability, the tape appearance and the paste application property. It is understood that this is because the antiaging agent and the copper damage inhibitor were mixed in the suitable range. From the above, the overall evaluation of the product of the present invention was determined to be good (◯).

[0253]

[Table 28]

Although the embodiments have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in the present embodiment, the adhesive containing a tackifier made of a specific resin, an antioxidant, a copper damage inhibitor, and a filler is described, but other than that, the object of the present invention is not deviated. Various additives may be added within the range and are not particularly limited.

Further, in the above-mentioned embodiment, the case where the wire bundle of the wire harness is composed of only the electric wire coated with vinyl chloride resin is not particularly mentioned, but of course,
Even in this case, the wire harness protection material according to the present invention can be applied.

[0256]

EFFECT OF THE INVENTION According to the wire harness protective material of the present invention, at least copper damage caused by migration of the tackifier is suppressed, or a deterioration promoting factor on the adhesive side or a deterioration promoting factor on the substrate side. By suppressing the copper damage caused by migration and the decrease of the anti-aging agent in the covering material, it does not significantly accelerate the deterioration of the electric wire in the wire bundle of the wire harness, preferably the electric wire coated with a non-halogen resin. A tape-shaped wire harness protection material can be obtained. Moreover, according to the wire harness using this wire harness protective material, the wire harness which can maintain quality over a long period of time can be obtained.

Therefore, when such a wire harness protective material and a wire harness are used in a harsh environment such as around the engine of an automobile, the reliability is extremely excellent and the industrial benefits are extremely large. Will be things.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H02G 1/06 501 H02G 1/06 501B 3/30 3/28 F 3/38 3/26 D (72) Inventor Tatsuya Hase 1-1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems Co., Ltd. (72) Inventor Yoshiharu Exit 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems Co., Ltd. (72) Inventor Jun Yoshimoto 1-1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems Co., Ltd. (72) Inventor Motoya Kawakita 1-1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems Co., Ltd. (72) Inventor Ishikawa Masatoshi 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems Co., Ltd. (72) Inventor Takamichi Yamashita 1-1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Co., Ltd. F-term (reference) 4J004 AA01 AA03 AA04 AA05 AA09 AA10 AA11 AA14 AA17 AB01 CA03 CA04 CA05 CA07 FA05 FA08 4J040 CA001 DB002 DB042 DE021 DF011 DF041 DF051 DK012 DN072 EB032 EE001 EF001 EK031 HB02 DC07 DC07D07G05D07G05D07G11A02 5A07 DB05A01 5A07 A05A05 A07A05

Claims (7)

[Claims] 1. A tape-shaped substrate made of a non-halogen resin or vinyl chloride resin having a halogen element content lower than that of a vinyl chloride resin compound or containing no halogen element, and a pressure-sensitive adhesive applied to at least one surface thereof. However, in this adhesive, hydrogenated terpene-based resin, aromatic hydrogenated resin, aliphatic hydrogenated resin, coumarone-
A wire harness protective material comprising one or more resins selected from indene resins, phenolic resins and styrene resins as tackifiers. 2. The wire harness protection according to claim 1, wherein the content of the tackifier is in the range of 10 to 200 parts by weight with respect to 100 parts by weight of the adhesive main component resin. Material. 3. The adhesive and / or the base material,
The wire harness protective material according to claim 1 or 2, further comprising an antioxidant and / or a copper damage inhibitor. 4. The content of the anti-aging agent contained in the pressure-sensitive adhesive and / or the base material is an electric wire in an electric wire bundle around which the wire harness protective material is wound, and contains the anti-aging agent. 10% to 500% of the content of the antioxidant contained in the coating material of the electric wire coated with the halogen-free resin
And the content of the copper damage inhibitor in the pressure-sensitive adhesive is in the range of 0.001 to 5 parts by weight with respect to 100 parts by weight of the pressure-sensitive adhesive resin component in the base material. The wire harness protective material according to claim 3, wherein the content is within a range of 0.001 to 5 parts by weight with respect to 100 parts by weight of the base resin component. 5. The anti-aging agent contained in the pressure-sensitive adhesive and / or the base material and the anti-aging agent contained in the coating material of the electric wire are of the same kind.
Wire harness protective material described in. 6. A wire harness in which the wire harness protective material according to claim 1 is wound around the outer circumference of an electric wire bundle. 7. An electric wire coated with the wire harness protective material according to claim 1, which is coated with a non-halogen resin containing an antioxidant and having a halogen element content lower than that of a vinyl chloride resin compound or containing no halogen element. A wire harness formed by winding around an outer circumference of an electric wire bundle having at least the above.