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JP-2026076062-A - Fluid leak detection tape

JP2026076062AJP 2026076062 AJP2026076062 AJP 2026076062AJP-2026076062-A

Abstract

[Problem] To provide a fluid leak detection tape that can detect fluid leaks stably and with high accuracy using a simple configuration. [Solution] The fluid leak detection tape is formed as a tape-like body having an adhesive portion, and is a fluid leak detection tape that detects when a conveyed object consisting of a fluid or a fluid-carrying object flowing through a conveyed path leaks from said conveyed path, and comprises a fluid-reactive material mixed into the adhesive portion that changes color upon contact with the fluid. [Selection Diagram] Figure 1

Inventors

  • 倉永 裕司
  • 大川 宗久
  • 江越 紀一郎
  • 渡辺 正敬

Assignees

  • 大電株式会社

Dates

Publication Date
20260511
Application Date
20241023

Claims (8)

  1. A fluid leak detection tape formed of a tape-like body having an adhesive portion, which detects when a conveyed object consisting of a fluid or a fluid-carrying object flowing through a conveying path leaks from said conveying path, A fluid leak detection tape characterized by comprising a fluid-reactive material that is mixed into the adhesive portion and changes color upon contact with the fluid.
  2. In the fluid leak detection tape according to claim 1, A fluid leak detection tape characterized in that the adhesive portion has self-fusing properties.
  3. In the fluid leak detection tape according to claim 1, A fluid leak detection tape characterized in that the fluid reaction material is disposed on the back surface of the tape-like body.
  4. In the fluid leak detection tape according to claim 3, A fluid leak detection tape characterized by having a transparent layer made of a transparent material on the surface of the tape-like body.
  5. In the fluid leak detection tape according to claim 4, A fluid leak detection tape characterized in that the fluid-reactive material comprises a reflectance-changing material disposed on the back side of the tape-like body whose reflectance changes upon reaction with the fluid, and a color-changing layer disposed on the transparent layer side which changes color according to the reflectance of the reflectance-changing material.
  6. In the fluid leak detection tape according to claim 1, A fluid leak detection tape characterized in that the degree of discoloration caused by the fluid-reactive material varies according to the degree of reaction.
  7. In the fluid leak detection tape according to claim 1, A fluid leak detection tape characterized by containing or coating a fluorescent material on the surface side of the tape-like body.
  8. In the fluid leak detection tape according to claim 1, A fluid leak detection tape characterized in that the fluid constituting the object to be transported is a liquid or gas selected from the group consisting of oil and water.

Description

This invention relates to a tape-shaped fluid leak detection tape for detecting fluid leaks, and more particularly to a fluid leak detection tape that can detect fluid leaks stably and with high accuracy. In the field of maintenance for equipment and products that use oils such as machine oil, lubricating oil, or insulating oil, rapid and accurate detection of oil leaks (oil leak detection) is considered crucial for ensuring safety. The areas covered include a wide range of applications such as processing machines, ships, automobiles, industrial machinery, and electrical equipment. Generally, there are various methods for detecting fluid leaks, depending on the equipment shape and operating environment, after implementing sealing measures. For example, a known method involves installing sensors at locations where oil leaks may occur and measuring changes in capacitance or impedance before and after the leak (Non-Patent Literature 1). However, when using sensors that require a power supply, detection is generally unreliable because they cannot detect small amounts of oil leaks and only detect leaks exceeding a certain amount. Furthermore, a method is known in which a grease or spray-type oil reagent is applied to areas where oil leaks may occur, and the color change is observed (Non-Patent Documents 2 and 3). However, typically, the grease or spray washes away over time and is affected by the surrounding environment, making it unsuitable for long-term use. Therefore, a fluid leak detection tape has been developed that can detect the occurrence of fluid leaks by simply wrapping the area around where oil leaks may occur with tape. Conventional fluid leak detection tapes include, for example, a method in which an adhesive-sealed oil-reactive material is attached to a location where oil leaks are likely to occur, and the resulting color reaction is observed (Non-Patent Literature 4). Furthermore, regarding technologies related to conventional fluid leak detection tapes, there is a known technology concerning grease-type oil reagents, which involves dissolving a single or mixture of lipophilic surfactants such as sorbitan monooleate and a single or mixture of organic amines such as diethanolamine in water, adding an oil-soluble dye and a white pigment such as titanium dioxide, and then adding a pigment having a different color from the oil-soluble dye, such as chromium oxide or red iron oxide, and homogenizing these (Patent Document 1). Furthermore, as an example of a conventional fluid leak detection tape, there is a known oil leak detection material (Patent Document 2) characterized by being made of a synthetic resin nonwoven fabric with a thickness of 200 μm or more, having both water permeability and oil-retaining properties, a colored layer in which the nonwoven fabric is colored, and a white layer at least 150 μm thick laminated on one side of the colored layer, in which white powder with a refractive index of at least 1.5 is dispersed in a transparent resin, so that the color of the colored layer can be seen through, while the white layer is opaque when the colored layer is wet with water and transparent when the colored layer is wet with oil. Furthermore, for example, a conventional fluid leak detection tape is known to consist of a breathable film, a darkly colored layer provided on the breathable film, and a white layer provided on the colored layer that becomes transparent when wet and opaque when dry, wherein the colored layer uses an adhesive such as cellulose resin (Patent Document 3). Special Publication No. 35-000014Japanese Patent Publication No. 2021-012085Japanese Patent Application Publication No. 10-185742 https://www.asahi-kasei.co.jp/ats/jp/oildetectors/csh-3005.htmlhttp://www.takamori-sisetu.com/chuko/ss_hanbai/gs_item.htmlhttps://taseto.com/chemical/chemical01_03.phphttps://www.nichigi.co.jp/products/oil-detection-strip.html A diagram showing the configuration of a fluid leak detection tape according to the first embodiment is shown.A diagram showing the configuration of a fluid leak detection tape according to the first embodiment is shown.This diagram illustrates the fluid leak detection of the fluid leak detection tape according to the first embodiment.This diagram illustrates the fluid leak detection of the fluid leak detection tape according to the first embodiment.A diagram showing the configuration of a fluid leak detection tape according to the second embodiment is shown.This diagram illustrates the fluid leak detection of the fluid leak detection tape according to the second embodiment.This diagram illustrates the fluid leak detection of the fluid leak detection tape according to the third embodiment. (First embodiment) As shown in Figures 1(a) and 1(b), the fluid leak detection tape according to the first embodiment is formed of a tape-like body 10 having an adhesive portion 1, and is a fluid leak detection tape that detects when a transported object A, which consists of a fluid