JPH0522705Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Industrial application field" This invention is to ensure that workers are informed of the existence of the buried object when excavating the ground by burying it in advance near the underground object. Regarding signs for underground objects that can be used.

"Conventional technology" Repairs various underground objects such as gas pipes, water and sewage pipes, power lines, communication lines, etc., or buries new objects near existing ones. In this case, it will be necessary to excavate the ground again. In such excavation work, buried objects may be damaged or destroyed by excavators such as power shovels. For this reason, a buried object sign has conventionally been buried in the ground above the buried object, and the sign alerts workers to prevent damage or breakage of the buried object.

This type of buried object sign includes the name of the buried object,
A film printed with warning words, marks, burial dates, etc. is pasted onto a woven fabric, then folded overlapping each other, and the overlapping portion is fixed by heat welding or machine stitching. Are known. Here, the reason why the overlapped part was formed by folding is that when this buried object marker is dug up during excavation work, the overlapped part stretches and clearly informs the worker of the location of the buried object. be.

``The problem that the invention aims to solve'' However, in the case of such signs for underground objects, usually legible characters, symbols, etc. are printed on the film in advance, as shown in Figure 3, and then these are printed. As shown in Fig. 4, since the overlapped part K is formed by folding, the characters and symbols printed on the overlapped part K are hidden inside.
There is a problem where the contents of the display become illegible.

"Means for solving the problem" In this invention, a folded overlapping part is formed in the length direction, and a readable marking part is formed only on the outer surface of the folded overlapping part without being hidden inside the folded overlapping part. The above issues were resolved.

Embodiment FIGS. 1 and 2 are diagrams showing an embodiment of this invention, and reference numeral 1 in the figures indicates an underground object sign (hereinafter abbreviated as sign). This sign 1 consists of a band-shaped laminate sheet 2 and a marking section 3 formed on the surface of the sheet.

The laminate sheet 2 is made by laminating a low-density polyethylene film with a thickness of about 50 μm and a woven fabric. Here, low density polyethylene has a density of about 0.93 or less and a melt flow index (MFI) of 0.5 to 8 g/
One that lasts about 10 minutes is preferably used. Further, as the woven fabric, for example, a fabric woven from a stretched tape made of high-density polyethylene resin is suitably used. Moreover, a plurality of folded overlapping parts (hereinafter abbreviated as overlapping parts) 4 are formed in the laminate sheet 2 in its length direction.
These overlapping parts 4 are all formed by being folded in the same direction, and further formed with the same interval and the same overlapping width.

The marking section 3 is formed by printing on the low-density polyethylene film of the laminate sheet 2, and, for example, as shown in Fig. 1, the letters and symbols "Be careful, there is a water pipe below!" are printed on each. They are arranged at equal intervals and repeated along the length. In addition, each character and symbol in this marking section 3 is displayed in an overlapping section 4...
It was printed so that everything appeared on the outside surface, without being folded inside and hidden.

To use the sign 1 having such a configuration, it is buried above an object to be buried with the sign 3 facing upward, as in the case of conventional signs. Then, when this is dug up during excavation, the marking section 3 on the surface can be clearly read without any missing letters, etc., so the worker can easily confirm the buried object buried below it. . Furthermore, even if the sign 1 is hooked by an excavator or the like during excavation work, the overlapping portions 4 are stretched, thereby preventing the sign 1 from breaking.

(Manufacturing Example) Sign 1 having the above-mentioned sign ``Be careful, there is a water pipe below!'' was manufactured. First, a low-density polyethylene film having a thickness of 50 μm was prepared, and as shown in FIG. 2, characters and symbols were printed on the film in areas d ₂ separated by predetermined intervals d ₁ . In this case, the range d ₂ ... where characters and symbols are printed and the interval d ₁ where they are not printed are each the same length,
Its length was set to 100 mm. Furthermore, two characters were printed in each range d ₂ . . . ("!!" is one character).

Next, this printed film was laminated to a woven fabric by an extrusion lamination method, a dry lamination method, or the like to obtain a laminate sheet 2.

Thereafter, the laminate sheet 2 is folded using a pre-adjusted folding machine, so that the folding interval d ₃ shown in FIG. 1 is 100±2 mm, and the overlapping width d ₄ is
Overlapping portions 4 were formed to have a width of 50±1 mm, and label 1 was obtained.

In the obtained sign 1, as shown in FIG. 1, all the characters and symbols of the sign part 3 appeared on the surface without being folded inward, and the contents could be clearly read.

Note that the method for obtaining the sign 1 is not limited to the above-mentioned method. For example, a laminated sheet may be folded in advance to form the overlapping portions 4, and then the surface of this may be printed to make the sign portion 3 readable. It may also be formed.

"Effects of the Idea" As explained above, the underground object marker of this invention has the following excellent effects.

(b) When excavating, when excavating, there is no possibility that letters, etc. will be hidden in the folded overlapping part and parts of the marking will be missing. The contents of the buried object can be clearly read, and therefore the operator can easily confirm the contents of the buried object buried below.

(b) When repairing various types of piping or wiring, inspections are usually carried out by checking the type of buried object, year of construction, name of manager, etc., and taking photographs and attaching them to the report so that the condition of the buried object can be seen. Although it has been done,
In the case of the underground object sign of the present invention, the marking part is not hidden and is completely exposed on the outer surface, so by taking a photograph of the underground object sign, the contents of the marking part (for example, types) can also be recorded at the same time, thus facilitating construction inspection.

(c) Even if the sign is hooked by an excavator or the like during excavation work, it is possible to prevent the sign from breaking by stretching the overlapped portion.

[Brief explanation of the drawing]

1 and 2 are diagrams showing one embodiment of the underground object sign of this invention, in which FIG. 1 is a schematic configuration diagram of the underground object sign, and FIG. 3 and 4 are diagrams showing an example of a conventional underground object sign, and FIG. 3 is a schematic cross-sectional view thereof. , FIG. 4 is a developed view. 1...Underground object sign, 2...Laminated sheet, 3...Indication part, 4...Overlapping part.

Claims (1)

[Scope of Claim for Utility Model Registration] An underground object sign that is buried near an underground object and indicates the existence of the underground object, which has an overlapping part that is folded in the length direction, and An underground object sign characterized in that a legible marking part is formed only on the outer surface of the folded overlapping part without being hidden inside the folded overlapping part.