JPH08200588A - Protective material for pipe end - Google Patents

Abstract

PURPOSE: To provide a protective material capable of protecting the inside after covering the opening only by being stuck on the end surface of a pipe by making use of the thickness of the pipe, by forming the protective material into a round sheet shape matching the aperture of the pipe, and enabling it to be stuck on the end surface of the pipe. CONSTITUTION: A protective material 11 is formed of resin or synthetic paper into a thick sheet shape and formed into a round shape matching the aperture of a pipe 1. A self-adhesives is applied on to the surface to be brought in contact with the end surface 12 of the pipe 1, the peripheral part is stuck on the end surface 12 of the pipe 1 by the action of the self-adhesive, and therefore, the opening is closed. A triangular lug part 12 projecting in the radial direction from the outer surface of the pipe 1 is integrally formed on the peripheral edge part of the protective member 11. When this protective paper 11 is used, it is stuck on the end surface by making use of the thickness of the end surface 12 of the pipe 1. Positioning and sticking work of the pipe 1 to the end surface 12 can be easily performed by pinching the lug part 13 by making use of the lug part 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube end protection material.

[0002]

2. Description of the Related Art When a pipe made of cast iron is manufactured, in order to protect the inner surface of the pipe, the interior is often provided by powder coating or the like. However, when this pipe is stored or transported to the laying site, there is a problem that the interior, particularly near the opening at the pipe end, is easily damaged. Therefore, conventionally, in order to prevent such damage from occurring, the pipe end is covered with a resin cap.

That is, in FIG. 4, 1 is a duct made of ductile cast iron, and an inner surface 2 is formed on its inner peripheral surface by powder coating or the like. At the end of this tube 1, an insertion opening 3 is formed to be inserted into the receiving opening at the end of another tube. 4 is a bottomed tubular protective cap, which is a resin tubular portion 5.
And the bottom portion 6 are integrally formed so that the bottom portion 6 covers the opening 7 at the end portion of the pipe 1 when the tubular portion 5 is fitted into the insertion opening 3 from the end portion of the pipe 1. There is. By covering the opening 7 at the end of the pipe 1 with the protective cap 4 in this way, damage to the interior 2 at the opening 7 and its vicinity is prevented.

[0004]

However, the protective cap 4 formed of the resin as described above has a problem that it is relatively expensive. Moreover, after being removed from the pipe 1 at the laying construction site, it is often thrown away as it is, and it is rarely collected and reused, which also causes a problem of high cost. is there.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve such problems and to provide a protective material for a pipe end portion at low cost.

[0006]

In order to achieve this object, the protective material for the pipe end portion of the present invention is formed in a circular sheet shape corresponding to the diameter of the pipe and can be attached to the end face of the pipe. It is composed of.

[0007]

According to this structure, a circular sheet-shaped protective material corresponding to the diameter of the pipe is attached to the end face of the pipe by utilizing the wall thickness of the pipe to cover the opening. It is possible to protect the inside. This sheet-shaped protective material
It can be inexpensively made of resin or synthetic paper. Also, if the material is made of a material that can be treated as a combustible waste, no problem will occur even if it is thrown away at the pipe laying site.

[0008]

1 to 3, reference numeral 1 denotes a ductile cast iron pipe similar to that shown in FIG. 4, and an interior 2 is formed on the inner peripheral surface thereof. 3 is the insertion port, and 7 is the opening. This opening 7 is covered with a protective material 11 according to the present invention.

The protective member 11 is made of resin or synthetic paper in the form of a thin sheet and has a circular shape corresponding to the diameter of the tube 1. Then, an adhesive is applied to the surface of the tube 1 that is in contact with the end surface 12, and the periphery of the tube is adhered to the end surface 12 of the tube 1 by the action of this adhesive.
The opening 7 is closed. In addition, at the periphery of the protective material 11, the pipe 1
Triangle-shaped ears 13 are integrally formed so as to project in the radial direction from the outer surface of the. Further, as shown in FIG.
Is peelably attached to the mount 14 before use.

When the protective material 11 is used, as shown in FIG. 3, the edge of the protective material 11 is peeled off from the mount 14, and the wall thickness of the end surface 12 of the pipe 1 is utilized to make the end surface. Adhere to 12 and stick. At this time, if the ears 13 are used, they can be easily peeled from the mount 14 even though they are formed in a circular shape. Then, by pinching the ear portion 13, it is possible to easily perform the positioning and attaching work to the end surface 12 of the tube 1.

When the attachment is completed, the opening 7 of the tube 1 is closed by the protective material 11 as shown in FIGS. 1 and 2, and the opening 7 and its vicinity are closed during transportation and storage of the tube 1. Damage to the interior 2 is prevented.

At the laying site of the pipeline, this protective material 11 is used for the pipe 1.
After peeling off from the end face 12 of, the joint work of the pipe joint is performed. Also at this time, it can be easily peeled off by pinching the ear portion 13. If the protective material 11 is made of a material that can be treated as a combustible waste, no problem will occur even if the protective material 11 is disposed of as a waste at a pipeline laying site. In addition, in the state before use, since a thin sheet is simply pasted on the mount 14, it is extremely thin and has an advantage that the storage space may be smaller than that of a conventional resin bottomed tubular body. There is.

[0013]

As described above, according to the present invention, the protective material for the pipe end is formed in a circular sheet shape corresponding to the diameter of the pipe, and can be attached to the end face of the pipe. Therefore, it is not only possible to cover the opening and protect the inside by simply sticking it to the end surface of this tube using the wall thickness of the tube, but also by forming it with resin or synthetic paper etc. It can be constructed at low cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a state in which a protective material according to an embodiment of the present invention is attached to a pipe end.

FIG. 2 is a sectional view of a portion shown in FIG.

FIG. 3 is a perspective view showing a state in which the protective material is attached to a mount before use.

FIG. 4 is a cross-sectional view of a pipe end portion in a state where a conventional protective material is attached.

[Explanation of symbols]

 1 Pipe 11 Protective material 12 End face 13 Ear

Claims (1)

[Claims] 1. A protective material for a pipe end, which is formed in a circular sheet shape corresponding to the diameter of the pipe and can be attached to the end face of the pipe.