JP2002245740A - Vibration damping material continuous feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration damping material continuous feeder which makes sticking work by an automatic medicine possible, enhances state accuracy of the sticking positions of vibration damping materials, permits efficient sticking and is capable of preventing the contamination, etc., by electrification. SOLUTION: The vibration damping material continuous feeder is constituted by arraying a plurality of vibration damping materials 3 including the structures laminated with viscoelastic materials 3b and restraining materials 3a at a specified pitch by affixing the surfaces of the viscoelastic materials 3b to the release surface of a liner 4. A plastic film 2a subjected to antistatic treatment together with the liner 4 is wound as interleaving paper 2 around a reel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to electric / electronic parts,
In particular, the present invention relates to a continuous supply of a damping material used for a suspension supporting a magnetic head of a magnetic recording medium or an optical pickup of an optical recording medium.

[0002]

2. Description of the Related Art A magnetic head inside a hard disk drive device floats on a magnetic disk while maintaining a small gap by utilizing a balance between wind pressure caused by rotation of the magnetic disk and spring elasticity of a suspension supporting the magnetic head. ing. In recent years, hard disk drives have been increasing their recording densities and operating speeds. In order to increase the recording density, the gap between the magnetic head and the magnetic disk has become increasingly narrower. The rotation speed is increasing more and more. Due to the wind turbulence generated by the rotation of the magnetic disk, vibration is generated in the suspension, and the positioning accuracy of the magnetic head attached to the tip of the suspension is significantly reduced. Due to this trend in recent years, the problem of vibration is increasing.

In recent years, an optical disk drive has recently used a suspension similar to a suspension of a hard disk drive, instead of a conventional system in which an optical pickup is supported by a gimbal spring due to an increase in recording density and an increase in rotation speed of a disk. Methods are being considered and vibration problems are occurring as well.

One of the methods for suppressing the vibration of the suspension is a braking material layer (viscoelastic body) and a restraining member (restraining member) which comes into contact with the braking material layer as described in Japanese Patent Application Laid-Open No. Sho 59-180855. There is a method of providing a damping material made of a body) on a suspension. FIG. 9 shows a state in which such a damping material 3 is attached to the suspension 22 of the magnetic head 21. Reference numeral 23 denotes a mounting block for fixing the suspension 22.

[0005] For example, Japanese Patent Laid-Open No.
A viscoelastic body as described in JP 132658 is used. It is already known that a plastic film such as a polyimide film and other polyester films described in JP-A-10-249865 can be used for the restraining member in addition to a metal foil such as stainless steel.

[0006] In such a vibration damping material composed of a constraining body and a viscoelastic body, a substrate to be adhered such as a suspension and the viscoelastic body fixed by the constraining body cause shear deformation when vibration occurs. Utilizing the fact that heat is generated by
Vibration is suppressed by converting vibration energy into heat energy.

[0007] Such a vibration damping material is provided in a shape obtained by punching a laminated body obtained by laminating a restraining body and a viscoelastic body with a mold such as a reciprocating mold or a rotary mold. Since the self-adhesive material is used, it is supplied in a state where the opposite surface of the viscoelastic body, on which the restraining member is not laminated, is attached to a liner that has been subjected to a release treatment. Then, when affixing to a part to be used such as a suspension, it is usual to peel off the liner and use it.

[0008]

SUMMARY OF THE INVENTION Such a vibration damping material is
When attaching to a suspension, etc., it was usual to work manually, but in this method, it is difficult to accurately apply the damping material to a predetermined place, and it may be out of order and cause misalignment. there were. If the position where the damping material is applied is shifted, there is a problem that expected damping characteristics cannot be obtained.

In addition, in the case of manual work, the sticking time per piece is long, and in the case of mass production, it is necessary to input a lot of manpower. Furthermore, in the case of manual operation, the vibration damping material or the suspension is contaminated by the contamination generated from the human body, and it is very convenient particularly when used in an application such as a hard disk which may be damaged by the contamination. It was bad.

On the other hand, even when automation is performed, peeling charging may occur between the reel and the liner when the liner is unwound from the reel, and this charging attracts dust in the air and causes foreign matter to adhere. It may be. Also, when a plastic film is used for the restraint of the vibration damping material, the charge easily remains on the restraint, and when attached to the suspension, an MR head or the like that is weak to static electricity may cause a head crash. is there.

In view of such problems, an object of the present invention is to make it possible to perform an attaching operation using an automatic machine, thereby increasing the accuracy of the attaching position of the damping material, allowing the attaching operation to be performed efficiently, and furthermore, the contamination due to electrification. It is an object of the present invention to provide a vibration damping material continuous supply body capable of preventing the vibration.

[0012]

The above object can be achieved by the present invention as described below. In other words, the continuous vibration damping material supply body of the present invention has a structure in which the surface of the viscoelastic material is adhered to a release surface of a liner that is continuous with a vibration damping material including a structure in which a viscoelastic body and a restraining body are laminated. A continuous vibration damping material supply body arranged at a plurality of pitches, wherein a plastic film subjected to an antistatic treatment together with the liner is wound around a reel as interleaving paper.

In the above, it is preferable that the antistatic treatment is one in which a treatment layer containing a metal and / or a metal oxide is formed by vapor deposition.

Preferably, the liner is a plastic film subjected to an antistatic treatment.

According to the present invention, since a plurality of vibration damping materials are arranged at a constant pitch on a release surface of a continuous liner, a sticking operation by an automatic machine becomes possible. Since the surface of the viscoelastic body is adhered, the viscoelastic body can be adhered using the adhesive property, and the exposed portion of the viscoelastic body can be reduced, thereby reducing contamination. Also, if the liner on which the damping material is stuck is directly wound around, the damping material is likely to be misaligned due to the tightening force. Since the slipperiness is obtained, the displacement of the damping material can be suitably prevented. At that time, since the plastic film that has been subjected to the antistatic treatment is used as interleaving paper, it is easy to prevent contamination of the product due to generation of static electricity when unwinding the liner. As a result, it is possible to perform the sticking operation by an automatic machine, thereby increasing the sticking position accuracy of the damping material, efficiently sticking, and preventing contamination due to charging.

In the case where the antistatic treatment is a treatment in which a treatment layer containing a metal and / or a metal oxide is formed by vapor deposition, the vapor deposition layer of the metal or metal oxide is very thin and hard to fall off, and the surface resistance is reduced. This is because the effect is large and the antistatic effect is high.

When the liner is a plastic film which has been subjected to an antistatic treatment, peeling charge generated between the reel and the liner when the liner is unwound is suppressed, thereby effectively adhering dust and foreign matter in the air. In addition, the head crash of the MR head or the like can be suppressed.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in the order of outline of shape and structure, material and manufacturing method, etc., with reference to the drawings.

FIG. 1 to FIG. 4 show a first embodiment of the present invention. As shown in FIG. 1, a plurality of continuous damping material supply bodies of the present invention are arranged at a constant pitch by sticking to a release surface of a continuous liner 4 in a state where a damping material 3 is punched and formed. . In the example shown in the figure, the liner 4 is wound around a reel 1 and a plastic film is
Is involved. As shown in FIG. 2, the reel 1 is composed of two flanges 6 and a core part 7, and the flanges 6 are fixed to the core part 7 at several places by a staple. One end of the liner 4 is fixed to the core 7 with an adhesive tape.

FIG. 3 is an enlarged view of a portion A in FIG. FIG.
As shown in FIG. 3, the vibration damping material 3 has a structure in which a viscoelastic body 3b and a restraining body 3a are laminated, and the surface of the viscoelastic body 3b is
On the mold release surface. The interleaf paper 2 is one in which an antistatic treatment is applied to one surface of a plastic base material 2a. I'm trying to come. The vibration damping material 3 is more viscoelastic than the restraining body 3a made of stainless steel foil.
It is punched out so that b becomes smaller. For that reason,
It is punched along the entire cutout line B in a state of being bonded to the liner 4. A backing tape 5 is adhered to the opposite surface of the damping material 3 in order to fix the portion of the liner 4 to which the damping material 3 has been stuck to the surrounding portion. The backing tape 5 has a width smaller than that of the liner 4 so that it does not protrude from the liner 4 due to misalignment at the time of bonding. The width has been taken.

As described above, the portion of the liner 4 to which the vibration damping material 3 is adhered is punched out in the same shape as the vibration damping material 3, and is adhered and held by the backing tape 5 around the punched portion. In this case, since the punching can be performed together with the liner 4, the punching process can be facilitated, and the liner 4 used for the punching can be used as it is, and the arrangement at the time of the punching can be used as described above. Further, since the vibration damping material 3 is stuck and held by the backing tape 5, the vibration damping material 3 is hardly dropped off, and the vibration damping material 3 can be easily peeled off by the liner 4.

As shown in FIG. 4, the damping member 3 has a part of the restraining body 3a and a part of the viscoelastic body 3b drawn out as a cut-out part C. The dropout portion C is not necessarily required, but is provided in accordance with the hole portion of the suspension or the portion where the wiring is stopped.

FIGS. 5 to 8 show a second embodiment of the present invention. As shown in FIGS. 6 and 7, the reel 8 is composed of two foam flanges 13, a core portion 14, and a foam layer 15 formed on the outside of the core portion 14 to prevent tightening. The core part 14 is a foamed body 14a punched in a ring shape.
To f are laminated with an adhesive. FIG. 8 is an enlarged view of a portion D in FIG. As in the first embodiment, the slip sheet 9 is made of a plastic base material 9a having one surface subjected to an antistatic treatment, and an antistatic treatment layer is provided on the opposite surface of the damping material so as not to come into direct contact with the damping material 10. 9b. The constraining body 10a of the vibration damping material 10 is made of a polyimide film. From a laminated sheet of the polyimide film, the viscoelastic body 10b, and the liner 11, the F portion is punched into a ribbon shape by a rotary mold, and after removing scum, the punching is performed. Drops E and G can be punched out by a high-speed press. Further, a sprocket hole 12 corresponding to the automatic machine is provided.

Hereinafter, the material of the continuous vibration damping material supply body of the present invention will be described.
The production method and the like will be described.

As the viscoelastic body to be used, any material may be used as long as it has vibration damping characteristics with respect to the temperature of the use site and the frequency of vibration to be suppressed. Specifically, a copolymer obtained by adding or reacting an additive such as a cross-linking agent or an antioxidant to a copolymer of two or more acrylic acid and acrylate monomers is usually used. I have. The damping properties are usually adjusted by the type and composition of the monomer. As the viscoelastic body, those having tackiness per se are generally used, but a heat-sensitive adhesive type that exhibits tackiness by applying heat may be used, and the viscoelastic body may not have tackiness itself or may have adhesive strength. In the case where is insufficient, an adhesive layer may be laminated and used.

Since the viscoelastic body usually has adhesiveness itself, it is supplied in a configuration in which a liner is attached to both sides. Moreover, the liner may be directly applied to the constraint body and a liner may be bonded to the other surface, or may be directly applied to the liner and then laminated with the constraint body. In that case, the step of laminating the viscoelastic body and the constraint body is omitted.

The restraining body may be any one that can restrain deformation of the viscoelastic body when laminated with the viscoelastic body. In addition to metal foils such as stainless steel and aluminum, polyimide, polyethylene terephthalate, polyethylene naphthalate, and aramid And the like can be used. Further, the restraining body is preferably made of a material having high rigidity (elastic modulus). This is because the higher the rigidity, the better the vibration damping characteristics.

A laminator is usually used for laminating the viscoelastic body and the restraining body. Lamination may be performed under conditions suitable for the adhesive properties of the viscoelastic body, the material of the restraining body, etc., for example, a pressure of 20 to 490 kPa, a temperature of room temperature to
It is used at 130 ° C. at a speed of 0.1 to 5 m / min. Also,
There are a method of punching after the viscoelastic body and the restraint are laminated, and a method of punching the viscoelastic body and the restraint separately and then aligning and laminating.

The viscoelastic body and the restraining body are usually laminated in two layers, but may be further laminated alternately in more layers, or each of the viscoelastic body and the restraining body may be formed in a plurality of layers. When a two-layer laminate is used as a vibration damping material for a suspension, the thickness of the viscoelastic body and the constraint body is 15 to 2 for the viscoelastic body.
The thickness is preferably 50 μm and the size of the constraint is 15 to 100 μm.

As the liner, use is made of a plastic film such as polyester having at least one surface subjected to a release treatment, or a film made of a material having a releasability itself such as polyethylene or polypropylene. Can also. A dimethylsiloxane-based resin is usually used for the above mold release process.However, as in the case of hard disk drives, the organic silicone volatilizes and condenses on the disk. In some cases, a non-silicone-based treating agent may be used. As the non-silicone-based treating agent, a long-chain alkyl-based agent, a fluorinated acrylate-based agent, a polyfluorinated ether-based agent, or the like can be used.
The liner of the present invention has a thickness of 30 to 11 in terms of flexibility when wound on a reel and transportability in an automatic machine.
A 0 μm plastic film is preferred. Further, it is preferable that the liner has been subjected to an antistatic treatment,
As the antistatic processing, the same processing as that for the slip sheet described later can be performed. However, when an antistatic treatment is applied to the liner, it is preferable to provide an antistatic layer on the side opposite to the release surface in order to ensure releasability.

The liner used for the application of the viscoelastic material may be used as it is as a continuous supply,
If necessary, it may be replaced with another liner in the middle of the process, and may be used as a continuous supply body.

For punching out the vibration damping material, high-speed pressing, rotary punching, punching using a Thomson die, or a combination of these punches may be used.

When punching the vibration damping material, the liner is not cut, but the half-cut punching is performed to raise the residue.
Although a continuous feeder may be used, in the case of a high-speed press, it is preferable to remove unnecessary portions by scrap removal after performing the entire punching including the liner. The scrap raising can be manually peeled off after the punching step, but it may cause contamination contamination. Therefore, it is desirable to perform the scraping in-line in the punching step.

When punching is performed by full punching, the punched-out damping material and the liner are peeled off, or when the damping material is peeled off by an automatic machine and used, the liner is attached together with the damping material. Therefore, it may not be possible to attach the suspension to a suspension or the like. Therefore, it is desirable to attach a backing tape to the back surface of the liner where the damping material is not attached so that the backing tape may be applied to the punched portion. It is preferable that the backing tape has a strong adhesive force so that the punched liner portion cannot be removed, and that the backing tape does not shift after being attached to the liner. Specifically, it is desirable that the adhesive strength (JIS C 2107) between the backing tape and the liner is at least twice, preferably at least five times, the adhesive strength between the liner and the damping material. In addition, the holding force (JIS Z023)
According to No. 7, the test plate was SUS304 plate (# 280 polished), the adhesion area of the test piece was 20 mm long × 10 mm wide, the test temperature was 80 ± 2 ° C., the load was 500 ± 50 g, and the holding time was 1 h.
In r), the displacement distance is 1 mm or less, preferably 0.1 mm.
Desirably, it is 3 mm or less.

The punched damping material is arranged at a constant pitch on the release treated surface of the liner, and the arrangement pitch of the damping material is preferably substantially the same as the pitch at the time of punching. . As a result, the damping material can be arranged at a constant pitch using the pitch at the time of punching as it is,
The complicated step of rearranging the damping materials after the punching can be omitted. In this case, it is preferable to provide a sprocket hole in the liner for positioning by the automatic machine, but in the case of an automatic machine that directly detects the position of the damping material by a sensor or the like, the sprocket hole is omitted. You can also.

The punching may be performed in a single row or a plurality of rows from the raw material of the vibration damping material. Also, a slit may be formed simultaneously with or immediately after a plurality of rows are removed, and a plurality of rows may be manufactured at the same time.

The vibration damping material is disadvantageous in that the glue does not protrude in order to prevent contamination and adhesion of foreign matters, but this can be prevented by making the viscoelastic body smaller than the restraining body. However,
If the viscoelastic body is too small, the desired vibration damping characteristics cannot be obtained, so it depends on the viscoelastic body thickness,
Desirably, it is 0.01 to 0.5 mm, preferably, 0.1 to 0.5 mm.
It is preferable to make the size smaller in the range of 02 to 0.2 mm.

In the above case, there is a method in which the constraint body and the viscoelastic body are separately punched with different sizes, and then laminated.
A method disclosed in Japanese Patent Application Laid-Open No. 10-249865, that is, a viscoelastic body of a composite material in which a viscoelastic body is laminated or covered on a restraining body using a viscoelastic body removing punch provided with a convex portion. It is more preferable to produce by a step of removing a part of the composite under pressure, and a step of punching out a punch having a viscoelastic body without a viscoelastic body by a punch for punching and a die forming a pair with the punch. It is preferable that it can be obtained by a single punching, the number of steps can be reduced, and there is no misalignment that occurs when laminating.

A continuous liner in which the damping materials are arranged at a constant pitch depends on the size and pitch of the damping materials.
Usually, the liner is several meters to several tens of meters. Since it is inconvenient to transport and use as it is, it is preferable to use a reel for winding. Further, since a long liner to which the vibration damping material is stuck can be continuously supplied from the reel, the work efficiency in the automatic machine can be further improved.

As the material for the reel, a wide range of materials such as paper, plastic, and metal can be used, but the plastic material is light and inexpensive, and does not generate paper dust unlike paper.
It is suitable. An injection-molded plastic reel may be used for the plastic reel, or the flange and the core may be separately molded and fixed with an adhesive, a staple, or the like. Also,
Plastic cardboard or foam can also be used. In that case, for example, a flat plate can be punched out using a Thomson mold. The core portion can be manufactured by laminating, for example, a ring-shaped punch with an adhesive or the like.

In the present invention, when wound around a reel, the plastic film is rolled together as interleaving paper. If the continuous liner on which the damping material is mounted at a constant pitch is directly wound, the damping material may be moved by the tightening force, which may cause a displacement. By slipping together the interleaving paper, a slipperiness can be obtained between the damping material and the displacement of the damping material can be prevented. As the plastic film, any material may be used as long as it has a slippery property. For example, polyester, polyethylene, polypropylene and the like are preferable. In addition, since the plastic film comes into direct contact with the vibration damping material when wound on a reel, it is desirable that the plastic film be a material with less transfer of contamination.

In the present invention, the above-mentioned plastic film which has been subjected to an antistatic treatment is used. This is to prevent separation electrification that occurs when the liner on which the damping material is arranged is fed out from the reel. If static electricity is generated at the time of attaching the vibration damping material, there is a possibility that the head may be destroyed by the static electricity, in addition to adsorbing foreign substances by the static electricity. In particular, MR heads, GMR heads and the like used in hard disk drives tend to be susceptible to static electricity.

When interleaving paper comes on the surface of the damping material (see FIG. 3), it is preferable that the surface that does not directly contact the damping material be treated as an antistatic treatment surface. This is to reduce the possibility that the antistatic treatment component is transferred by contact. In the case of vapor deposition of a metal or an oxide thereof, there is a possibility that the metal or the oxide may be rubbed by contact with the vibration damping material.

As the method of the antistatic treatment, metals such as aluminum, zinc, silver and indium and oxides thereof,
For example, a method of forming indium tin oxide or the like on a plastic film by vapor deposition is preferable. The reason is that the vapor deposition of a metal or a metal oxide has a very thin layer, is hard to fall off, and has a high antistatic effect due to a low surface resistance.

The method of vapor deposition may be selected depending on the material of the layer to be formed. For example, vacuum vapor deposition is performed by heating and evaporating a metal (oxide) to about 1000 ° C. under a reduced pressure of about several Pa to form a film. And a sputtering method in which a metal (oxide) is sputtered under reduced pressure to form a film on a film. The processing layer formed by evaporation,
From the viewpoints of the antistatic effect, economy, film handling, and the like, the temperature is preferably about 100 to 5000 °.

Other antistatic methods include amphoteric,
There is a method of coating a surfactant such as a cationic or nonionic surfactant or other antistatic agent, a conductive substance, etc. on a plastic film, a method of kneading a plastic film in advance, and the like. The activator or the like may adhere to the damping material and cause contamination. In addition, conductive plastics such as polyaniline and polypyrrole may be coated, but metal (oxide) vapor deposition is often more advantageous in terms of cost. In addition, there is a method of laminating a metal foil or coating with a plating.

The antistatic treatment of the slip sheet or liner in the present invention is preferably carried out until the surface resistivity becomes 10 ¹¹ Ω / □ or less, more preferably 10 ⁹ Ω / □ or less. When the surface resistivity exceeds 10 ¹¹ Ω / □, it is difficult to obtain an effective antistatic effect.

The liner in which the vibration damping materials thus formed are arranged at a constant pitch is wound around a reel together with a slip sheet made of a plastic film subjected to an antistatic treatment, thereby forming a product.

As the material for the reel, a plastic or the like subjected to an antistatic treatment can be used. When used in an automatic machine, peeling charging may occur between the reel and the liner when the liner is unwound. As a result, the dust in the air is attracted due to the electrification, which causes foreign matter to adhere. Further, when a plastic film is used for the restraint, the restraint remains charged, and when attached to a suspension, an MR head or the like that is susceptible to static electricity may cause a head crash. Therefore, in order to prevent peeling electrification, it is possible to use a plastic obtained by subjecting a reel material to an antistatic treatment.

The reel is preferably subjected to an antistatic treatment and has a surface resistivity of 10 ¹¹ Ω / □ or less, particularly preferably 10 ⁹ Ω / □ or less. When the surface resistivity exceeds 10 ¹¹ Ω / □, it is difficult to obtain an effective antistatic effect. In the antistatic treatment, a commercially available material may be used as it is, as long as it exhibits the above surface resistivity. The antistatic treatment may be kneaded into the reel material, or may be applied to the reel material before use.

When the liner is wound on the reel, the tightening is likely to occur, and the tightening leads to a displacement of the damping material. Therefore, it is preferable to form a foam layer on the reel outside the core portion, that is, on the innermost part of the liner winding, for the purpose of preventing tight winding. The foam layer is fixed to the outside of the core with, for example, an adhesive or a double-sided adhesive tape. When the liner is wound tightly when the liner is wound on the reel, the foam layer exerts cushioning properties and has an effect of loosening the winding. As the foam layer, a commercially available foam layer can be used as long as it exhibits an appropriate cushioning property. For example, a urethane foam body having a thickness of 0.5 to 10 m is used.
m, preferably 2 to 6 mm. Also,
The entire core may be formed of a foam.

[0052]

EXAMPLES For reference, an example of examining a change in surface resistivity when a metal is vacuum-deposited on a PET film will be described below.

(Example 1) A polyethylene terephthalate film (Lumirror S10, manufactured by Toray Industries, Ltd., surface resistivity: 10 ¹⁴ Ω / □) having a thickness of 50 μm was subjected to antistatic treatment according to the following method to produce an interleaf paper. The aluminum was heated to 1220 ° C. and evaporated under a reduced pressure of 1.33 Pa or less, and the above-mentioned polyethylene terephthalate film was placed in this atmosphere to adhere the evaporated aluminum to the film surface to form an aluminum layer. The formed aluminum layer is about 2
000 °, and the surface resistivity of the film was 50Ω / □. Since the interleaf paper has a considerably low surface resistivity, it is considered to have a sufficient antistatic function.

[Brief description of the drawings]

1A and 1B are diagrams showing a continuous damping material supply body according to a first embodiment, wherein FIG. 1A is a front view and FIG. 1B is a side view.

FIG. 2 is a view showing a reel according to the first embodiment, and FIG.
Is a front view, (b) is a side view

FIGS. 3A and 3B are enlarged views of a portion A in FIG. 1, wherein FIG. 3A is a side view and FIG.

FIG. 4 is an enlarged plan view of the vibration damping material according to the first embodiment.

5A and 5B are diagrams illustrating a continuous damping material supply body according to a second embodiment, wherein FIG. 5A is a front view and FIG. 5B is a side view.

FIG. 6 is a diagram illustrating a reel according to a second embodiment, in which (a) is shown.
Is a front view, (b) is a side view

FIGS. 7A and 7B are diagrams showing a core portion of the reel according to the second embodiment, in which FIG. 7A is a front sectional view, and FIG.

8 is an enlarged view of a portion D in FIG. 5, (a) is a side view, and (b) is a plan view.

FIG. 9 is a plan view showing a use state in which the damping material is attached to a suspension of the magnetic head.

[Explanation of symbols]

 Reference Signs List 1 reel 2 interleaf paper 2a plastic film 2b antistatic treatment layer 3 damping material 3a restraint 3b viscoelastic body 4 liner 5 backing tape 8 reel 9 interleaf 9a plastic film 9b antistatic treatment layer 10 damping material 10a restraint 10b Viscoelastic body 11 Liner 15 Foam layer

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hitoshi Matsuoka 1-2-1 Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Corporation F-term (reference) 3J048 AA01 AC01 BD08 EA07 5D059 AA01 BA01 CA01 CA02 CA26 DA01 DA09 DA28 DA33 EA08

Claims (3)

[Claims] 1. A vibration damping material including a structure in which a viscoelastic body and a restraining body are laminated, and a plurality of vibration damping bodies are adhered to a release surface of a continuous liner and are arranged at a constant pitch. A continuous damping material supplier, wherein a plastic film that has been subjected to an antistatic treatment together with the liner is wound around a reel as interleaving paper. 2. The continuous vibration damping material supply according to claim 1, wherein the antistatic treatment is formed by depositing a treatment layer containing a metal and / or a metal oxide. 3. The continuous vibration damping material supply according to claim 1, wherein the liner is a plastic film subjected to an antistatic treatment.