JPH0677199U - Static elimination sheet and cloth material using the same - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an antistatic sheet having good workability, excellent water resistance and mechanical strength, and a fabric material having an antistatic function and easily manufactured. A static elimination sheet comprising a resin layer (2) containing a conductive material on at least one surface of the static elimination paper (1), and a cloth material using the same. [Effect] The water resistance and mechanical strength of the static eliminator paper (1) are improved, and the workability is particularly good when it is laid and used in a wide range. Also, even if the static elimination sheet is placed under the carpet, unpleasant frictional noise due to walking is not generated unlike the conventional static elimination paper, and even if water overflows on the carpet, the penetration of water is blocked by the static elimination sheet. , The carpet is naturally dried in a short time, and the inside is not damp.
Furthermore, the cloth material of the present invention is suitable as a base material or wall material for carpet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a static eliminator sheet, and particularly to a static eliminator sheet suitable for use with a carpet and having excellent water resistance and mechanical strength, and a cloth material using the same.

[0002]

[Prior art]

 In recent years, mats that can prevent the generation of static electricity have come to be used under doors and at the feet of the driver's seat of automobiles. Conventionally, such mats have used conductive fibers as a part of the yarns constituting the base fabric and are grounded, but recently, various mats that do not need to be grounded have been proposed ( JP-A 2--14936, 2-60849, 2-104772, 2-106450 and 2-216284) have been put to practical use (for example, high-tech carpet: Nitto Shokai Co., Ltd.) Product name). Under such circumstances, a paper material having a static elimination function (hereinafter, referred to as “static elimination paper”) has been recently developed, and it is laid under the mat to have the static elimination function. Became.

[0003]

[Problems to be solved by the device]

 However, when the above conventional static eliminator is used as it is as an antistatic material for carpet, various problems occur during and after construction. For example, at the time of construction, there is a drawback that the static elimination paper is easily broken when the static elimination paper is spread and it is difficult to perform the construction, and after the construction, there is a drawback that an unpleasant friction noise due to walking is generated. In addition, since the static elimination paper absorbs water, it takes time for it to dry when water overflows on the mat, and when many people walk on it, the static elimination paper is broken finely and the static elimination function is It had the drawback of being lost.

Therefore, the inventors of the present invention have conducted extensive studies in order to solve the above-mentioned drawbacks, and as a result, by providing a resin layer containing a conductive material on at least one surface of the static elimination paper, It is possible to improve the water resistance and mechanical strength of the static eliminator paper and to improve the workability. Also, when this static eliminator sheet is attached to at least one surface of the base fabric, its application is remarkably improved. They have found that they can be expanded and arrived at the present invention. Therefore, the first object of the present invention is to provide an antistatic sheet having excellent mechanical strength and easy to construct. A second object of the present invention is to provide a cloth material having an antistatic function and easily manufactured.

[0005]

[Means for Solving the Problems]

 The above-mentioned objects of the present invention are achieved by a static eliminator sheet characterized in that a resin layer containing a conductive material is provided on at least one surface of the static eliminator paper, and a cloth material using the same. It was Hereinafter, the static elimination sheet of the present invention will be described in detail with reference to the drawings. 1 and 2 are cross-sectional structural views of the static elimination sheet of the present invention. In the figure, reference numeral (1) is a static elimination paper, and (2) is a resin layer.

As shown in FIG. 1, the static elimination sheet of the present invention has a resin layer (2) provided on at least one surface of the static elimination paper (1). If necessary, the static elimination sheet as shown in FIG. It can also be provided on both sides of the paper (1). Examples of the static eliminator paper (1) used in the present invention include those formed by a wet papermaking method using a polyester fiber, a conductive fiber (for example, carbon fiber) and a binder to form a sheet.

The resin layer (2) in the present invention can be provided by a known method such as a coating method, a spray coating method, a laminating method, dot adhesion, line adhesion or whole surface adhesion. In particular, when a heat-adhesive resin is used, the resin layer prepared in the form of a sheet in advance can be easily adhered to the static eliminator paper, whereby mechanical strength can be imparted to the static eliminator paper.

The thickness of the resin layer (2) is preferably in the range of 5 to 100 μm from the viewpoint of static elimination performance. Examples of the conductive material added to the resin layer (2) include an antistatic agent (surfactant), metal powder, carbon black and the like. The mixing ratio of the conductive material is not particularly limited as long as the resin layer has a film-forming ability by itself. When the thickness of the resin layer is 100 μm or less, the antistatic performance of the static eliminator paper can be maintained by containing 0.5 to 3.0% by weight.

FIG. 3 is a sectional view showing an example of use of the static elimination sheet of the present invention. In the figure, reference numeral (3) is a carpet, (4) is a static elimination sheet, and (5) is a cushioning material laid on the concrete slab (6). As the carpet (3), known ones can be used, but it is preferable to use an antistatic carpet in which conductive fibers are used as a base cloth, a pile or the like.

The antistatic sheet (4) can be installed on site, but if it is attached to the back surface of the carpet (3) or the top surface of the cushioning material (5) in the factory, the installation will be extremely easy. Become. In this case, if a resin having thermal adhesiveness is used as the resin layer of the static eliminator sheet (4), it can be easily attached to a carpet or the like without using a conductive adhesive.

Further, by attaching the static elimination sheet of the present invention to at least one surface of the base cloth, a cloth material having a static elimination function can be easily manufactured. In this case, the base fabric needs to be a non-woven fabric or a fabric. When a non-woven fabric is used as the base cloth, the obtained cloth material can be used as a base cloth or the like when manufacturing a mat or carpet. When a woven fabric is used as the base fabric, it can be used as a wall material or a sheet material. In addition, the above-mentioned cloth material only needs to be adhered to the base cloth as a result, and the manufacturing method thereof is not particularly limited.

[0012]

[Effect of device]

 As described in detail above, the static eliminator sheet of the present invention is excellent in water resistance and mechanical strength, and therefore has particularly good workability when laid and used in a wide range. Further, the static elimination sheet of the present invention does not generate an unpleasant frictional noise due to walking even if it is placed under a carpet, and the static elimination sheet is not destroyed even if repeated friction occurs. Further, even if water overflows on the carpet, the penetration of water is blocked by the static eliminator sheet, so that the carpet is naturally dried in a short time and no moisture is trapped inside the carpet. Further, the cloth material of the present invention is useful as a wall material or a base cloth such as carpet.

[0013]

【Example】

 Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto.

Example 1. On one side of static eliminator paper (Soldion: trade name of Toray Industries, Inc.), an ethylene-vinyl acetate copolymer resin containing 3% by weight of carbon black was applied by melt extrusion to a thickness of 60 μm. Then, the static elimination sheet of the present invention was obtained. The obtained static eliminator sheet was brought into contact with an object charged to 10 KV, and the electrification voltage of the object was measured and found to be 1 KV (Fig. 4, solid line). Next, after 60 seconds, the static elimination sheet was removed from the charged body, and the electrification voltage of the object hardly changed. Further, the result of FIG. 5 was obtained when the static elimination effect of the static elimination sheet of the present invention was measured for each surface area of the charged body with respect to the surface area of the charged body.

Comparative Example 1. The aluminum plate was brought into contact with an object charged to 10 KV, and the charged voltage of the object was measured. As a result, it was 4 KV (dotted line in Fig. 4). Then, after 60 seconds, the aluminum plate was removed from the charged object, and the charged voltage of the object again increased to 10 KV. From the results of FIG. 4, it was confirmed that the static elimination sheet of the present invention has excellent static elimination performance and completely discharges static electricity in the air. Further, from the results of FIG. 5, when the static elimination sheet of the present invention is arranged on the back surface of the carpet, if the disposition area ratio is set to 75% or more, the electrification voltage becomes about 2 KV or less and the antistatic function is sufficiently exhibited. It was confirmed.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of a static elimination sheet of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the static elimination sheet of the present invention.

FIG. 3 is a cross-sectional view showing an example of use of the static elimination sheet of the present invention.

FIG. 4 is a diagram comparing the static elimination performance of the static elimination sheet of the present invention with other materials.

FIG. 5 is a diagram showing the effect of static elimination for each attachment area with respect to the surface area of the charged body of the static elimination sheet of the present invention.

[Explanation of symbols]

 1 ... Static elimination paper 2 ... Resin layer 3 ... Carpet 4 ... Static elimination sheet 5 ... Cushioning material

Claims (4)

[Scope of utility model registration request] 1. A static eliminator sheet, comprising a resin layer containing a conductive material provided on at least one surface of the static eliminator paper. 2. The resin layer contains a conductive material in an amount of 0.5 to 3.0.
The static elimination sheet according to claim 1, which is a layer formed by mixing by weight. 3. The charge eliminating sheet according to claim 1, wherein the resin layer is a heat adhesive resin layer. 4. A cloth material comprising the static elimination sheet according to claim 1 attached to at least one surface of a base cloth.