JPH0111706Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rust-preventing adhesive tape, particularly to a rust-preventing adhesive tape used for rust-proofing a groove portion before welding.

[Prior Art] As shown in FIG. 1, rust-preventive adhesive tapes have conventionally been produced by providing a layer 2 of a volatile rust preventive agent on the surface of a synthetic resin sheet 1, and further forming a pressure-sensitive adhesive layer 3 thereon. What has been done is known. Since the sheet 1 is an impermeable layer that does not allow the volatile rust preventive agent to pass through, the volatile rust preventive agent acts on the metal product through the pressure sensitive adhesive layer 3 on the upper surface as shown by the arrow.

Moreover, in Utility Model Application No. 53-125727, as shown in FIG. 2, on one side of the waterproof tape base material 10,
A rust preventive tape is shown that has a rust preventive agent 11 attached and an adhesive 12 attached to both ends in the length direction, and this configuration provides a rust preventive effect and an effect of preventing adhesive residue. .

[Problems to be solved by the invention] However, in the case of the anti-corrosion tapes shown in FIGS. 1 and 2, the weld groove 1 as shown in FIG.
3. When opened on 14th, the welding line was not visible from the outside,
Another drawback is that the internal rust prevention effect cannot be confirmed.

The present invention was devised in view of the above circumstances, and its purpose is to provide a rust-proof adhesive tape that allows the condition of the welding groove to be constantly checked from the outside and is excellent in rust prevention and prevention of adhesive residue. It is in.

[Means for Solving the Problems] In order to achieve the above object, the anticorrosive adhesive tape of the present invention is provided with a layer of a volatile rust preventive agent leaving a viewing window on the surface of the transparent sheet. A pressure sensitive adhesive layer is provided on both sides.

[Function] With these configurations, the volatile rust preventive agent acts to prevent rust in the groove, and the condition of the groove can be visually checked through the transparent sheet and the viewing window. Furthermore, the pressure-sensitive adhesive layer facilitates attachment and detachment of the tape, and leaves almost no adhesive residue.

[Example] FIG. 4 shows a cross-sectional view of a rust-proof adhesive tape to which the present invention is applied, and the same parts as in the conventional example shown in FIG. 3 are given the same reference numerals.

This rust-preventing adhesive tape is composed of a transparent sheet 10', a volatile rust-preventing agent layer 11, a viewing window 11a, and a pressure-sensitive adhesive layer 12. The transparent sheet 10' is
A synthetic resin film such as polyethylene that is impermeable to volatile rust inhibitors is used. Volatile rust preventive layer 11
is formed on the inner surface of the transparent sheet 10', and the center thereof is cut out to form a viewing window 11a.
The pressure-sensitive adhesive layer 12 is provided along both side edges of the transparent sheet 10', and is selected from a layer that does not leave adhesive residue on the metal surface.

When using the rust-preventing adhesive tape constructed in this way, first place the tape along the weld line of the weld groove parts 13 and 14 fixed with the temporary fixing jig 15 so that the volatile rust-preventive agent is on the inside. Paste. Since the outside of the tape is an impermeable transparent sheet 10', the volatile rust inhibitor acts on the metal grooves 13 and 14 as shown by the arrows. At this time, the welding line can be seen through the transparent sheet 10' and the viewing window 11a, making it easy to attach the tape. In addition, until the start of welding, the groove portion 1
The conditions of items 3 and 14 can be checked from the outside without removing the tape.

[Effects of the invention] As explained above, the rust-proof adhesive tape of the present invention has a transparent sheet with a layer of vaporizable rust-preventive agent leaving a viewing window on the surface, and pressure-sensitive adhesives on both sides of the sheet. Since the adhesive layer is provided, the condition of the welding groove can be constantly checked from the outside, and it is also highly effective in preventing rust and adhesive residue.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of the conventional product, and Figure 3 is a perspective view of the conventional product.
The figure is a simplified sectional view showing how the conventional product is used, and FIG. 4 is a simplified sectional view showing how the tape of the present invention is used. 10'... Transparent sheet, 11... Volatile rust preventive agent layer, 11a... Peephole, 12... Pressure sensitive adhesive layer, 13, 14... Welding groove portion.

Claims (1)

[Scope of utility model registration request] A rust-preventing adhesive tape comprising a layer of a volatile rust preventive agent on the surface of a transparent sheet leaving a viewing window, and a pressure-sensitive adhesive layer on both sides of the sheet.