Tape for electric wire

Abstract

A tape which has enhanced heat resistance, flame retardancy, and wearing resistance and is suitable for use in bundling a group of electric wires which will be laid in a high-temperature environment. The tape is configured using the same yarns (10) each composed of high-function fiber filaments (11) and general-purpose fiber filaments (12), as a warp (3) and a weft (4). The high-function fiber filaments are superior to the general-purpose fiber filaments in heat resistance, flame retardancy, and wearing resistance. The high-function fiber filaments are of at least one kind selected from paraaramid fibers, polyarylate fibers, ultrahigh-molecular polyethylene fibers, glass fibers, and polyphenylene sulfide fibers. The general-purpose fiber filaments comprise at least one selected from polyesters, polyethylene, and polypropylene.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a tape for electric wires and more particularly to a binding tape which can be preferably used as a tape to be wound around a group of electric wires of a wire harness to be wired on a vehicle.[0003]2. Description of the Related Art[0004]The tape disclosed in Japanese Patent Applications Laid-Open No. 2003-272447 and the like is conventionally used to bind and protect a group of electric wires of a wire harness to be wired on a vehicle and prevent the wire harness from interfering with external interference materials. An adhesive agent is applied to one surface of the tape. The tape is spirally wound around the peripheral surface of a wire harness W / H to bind the group of the electric wires.[0005]Recently instead of the tape, a tube such as a corrugate tube is often used to bind and protect the group of the electric wires of the wire harness by inserting the group of the electric wires t...

AI Technical Summary

Benefits of technology

[0013]As described above, the yarn of the tape used in the present invention is composed of the high-function fiber strands superior to a tape formed by weaving polyester fibers conventionally used in heat resistance, flame retardance, and wear resistance thereof and the general-purpose fiber strands such as the polyester, the polyethylene, and the polypropylene mixed with the high-function fiber strands as the assistant fiber. The yarn to be used in the present invention has flame retardance and wear resistance improved over those of the yarn formed by weaving the general-purpose fibers. In addition the tape composed of the yarn has much less possibility of the occurrence of hydrolysis than the conventional tape formed by weaving the polyester fibers. Therefore the tape of the present invention can be used to bind the wire harness to be wired inside an engine room which is the most severe tape-using environment inside a vehicle.

[0015]It is favorable to set a mixing ratio of the high-function fiber strand to the general-purpose fiber strand to 10 to 50%:90 to 50%.

[0016]It is more favorable to set the mixing ratio of the high-function fiber strand to 20 to 30%.

[0020]To enhance the heat resistance and wear resistance of the general-purpose fiber strands, it is preferable to irradiate the formed tape with ionizing radiation to crosslink the general-purpose fiber strands.

[0021]It is possible to irradiate the general-purpose fiber strands with the ionizing radiation in advance and thereafter weave the general-purpose fiber strands and the high-function fiber strands.

[0028]As apparent from the foregoing description, the tape of the present invention for electric wires is superior in its heat resistance, flame retardance, and wear resistance and rarely hydrolyzes. Therefore the tape can be preferably used as the tape for binding the group of electric wires of the wire harness to be wired on a vehicle and particularly inside the engine room.

Problems solved by technology

Because the corrugate tube is comparatively hard and heavy, the corrugate tube makes it less easy to perform a work of wiring the wire harness on the vehicle than the tape.

Thus the use of the tube has a problem that the number of processes increases.

Although a tape consisting of braided polyester fibers is used as a heat-resistant tape from the above-described standpoint, the tape has low flame retardance and wear resistance.

Thus the tape consisting of the polyester fibers is unsuitable in using it inside an engine room.

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