JPH0453890A - Pressure-sensitive tape for bundling wire harnesses - Google Patents

Abstract

PURPOSE:To improve the workability and bundling force for wire harnesses and to prevent the transfer of a pressure-sensitive adhesive layer to the rear by forming a pressure--sensitive adhesive layer on a smooth surface of a satin weave fabric with different smoothnesses on the surface and the rear and without varnish treatment. CONSTITUTION:A pressure-sensitive adhesive layer is formed on a smooth surface of a satin weave fabric with a tensile strength which is durable to the tension when wire harnesses are bundled, with different smoothnesses on the surface and rear and without varnish treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a wire harness binding adhesive tape used for binding wire harnesses. Wire wires that are routed along the surface - absorb the impact sound generated by the contact between the kiss and the panel wall, and wire wires)
- The present invention relates to an adhesive tape for binding wire harnesses that has good bendability to match the shape of a vehicle body even when wire harnesses are bundled.

(b) Conventional technology In recent years, electrical components in automobiles have become more and more electronic, and a wide variety of electrical and electronic devices such as car air conditioners, car stereos, and even car televisions have come to be installed. By making the lead wires used for wiring thicker and by developing silent engines, the engine noise has become smaller, resulting in louder impact noise between the wire harness and the panel wall, which can cause discomfort to users. There's a problem.

Therefore, in order to solve this problem, we decided to
As a tape, a fibrous base material having at least on its surface a fibrous structure that can be raised by adhering a pressure-sensitive adhesive layer and peeling it off, a tape-like material capable of tightly binding objects to be bound, and objects to be bound. It has been proposed that a pressure-sensitive adhesive layer capable of firmly adhering to the surface of the substrate is laminated in this order, and then wound into a roll with the pressure-sensitive adhesive layer inside. 13118).

In this case, the tape-like material is one that can tightly bind the objects to be bound, such as wire harnesses, and that is not easily stretched by the tension at the time of binding, such as pongee or two. Stretched plastic films such as axially stretched polyester films, polypropylene films, polyvinyl chloride films or natural materials
Non-stretchable yet strong cloth or paper is used.

(e) Problem to be solved by the invention: The sound-muffling binding tape has been put into practical use as it has an excellent sound-dampening effect. Wiring harnesses are also becoming more complex as they are used more frequently. Therefore, the diameter has changed from the conventional 20 to 30 m5 to 501 m11.
As described above, after the wire harness is bound using this type of sound-muffling binding tape, it becomes difficult to bend it to match the shape of the vehicle body, resulting in significantly poor workability.

That is, the above-mentioned tape-like material is used for the above-mentioned sound-deadening binding tape, but this tape-like material has no natural elasticity and is strong. The tape-like material and the base material are adhesives (including pressure-sensitive types),
They are bonded together using appropriate adhesive means such as fusion.

In this case, the diameter of the bundled wire harness is 501111
If the above-mentioned conditions are met, it becomes very strong and difficult to bend to fit the shape of the car body, which not only results in poor workability but also causes problems such as the fact that it can only be used for special purposes.

The present invention uses an unvarnished satin woven fabric with different smoothness levels on the front and back surfaces as a tape-like article, and provides an adhesive layer on the smooth surface of the satin woven fabric to produce an adhesive tape for wire harness binding. With this, when the wire harness is bundled and bent, it is extremely easy to bend to match the shape of the vehicle body due to misalignment of the fibers, etc., and it is extremely easy to work and can be used for a wide range of applications. To provide an adhesive tape for wire harness binding which can be reliably and extremely easily bound.

In addition, the present invention uses an unvarnished satin woven fabric with different smoothness levels on the front and back surfaces, and provides an adhesive layer on the smooth surface of the satin woven fabric to produce an adhesive tape for wire harness binding. By using adhesive tape as a single tape winding, it solves the problems of unwinding and adhesion to its own back surface without using a subbing agent, backing agent, or varnish treatment.At the same time, this kind of adhesive tape wire harness To obtain an adhesive tape for binding wire harnesses that can be easily unwound by preventing an adhesive layer from being transferred to its own back surface without reducing adhesive strength.

(cl) Means for Solving Problem 81 In order to achieve the above object, the adhesive tape for wire harness bundling of the present invention is an adhesive tape used for bundling wire harnesses, the adhesive tape is It is characterized in that an adhesive layer is provided on the smooth surface of an unvarnished satin fabric whose back surface has a different degree of smoothness.

The satin woven fabric used in the present invention is one that has strength as a support, that is, one that has a tensile strength that can be adjusted to the tension when binding wire harnesses, and that has been treated with varnish to have different smoothness on the front and back surfaces. There is no particular limitation as long as it is not.

According to the first aspect of the invention, an adhesive layer is provided on the smooth surface of a satin woven fabric to form an adhesive tape for binding wire harnesses.

In other words, if unvarnished satin fabric is used as a support for the adhesive tape for wire harness binding, when the wire harness is tied and bent, the fibers may be misaligned, causing the wire harness to bend to fit the shape of the vehicle body. In addition, the wire harness can be tied reliably and extremely easily.

On the other hand, in adhesive tape for binding wire harnesses,
In the case of a plain woven fabric in which the front and back surfaces of the fabric have the same smoothness, the anchoring force of the adhesive layer provided on one side of the fabric to the fabric and the adhesion force to its own back surface are significantly different. It is usually difficult to adjust the adhesive force to the back surface to be small, and kneading causes poor unwinding properties and also causes the adhesive layer to transfer to its own back surface.

In addition, since the warp and weft yarns of this V-woven fabric are alternately exposed one by one on the front or back side, both the front and back sides have large irregularities, that is, low smoothness, and as a result, the adhesive layer The surface slippage becomes poor, and this poor surface slippage reduces the adhesion area to the wire harness and reduces the adhesive strength.Moreover, it is difficult to bind the wire harness with adhesive tape made of such plain woven fabric. If the fibers are folded, it is difficult to cause misalignment of the fibers, making it difficult to bend the fibers to fit the shape of the vehicle body, resulting in poor workability.

So, these I! In fact, satin woven fabric is very suitable as a support for adhesive tapes, and the above object can be achieved when second satin woven fabric is used as a support for adhesive tapes.

Hereinafter, the adhesive tape for wire harness bundling of the present invention will be explained with reference to FIGS. 1 to 3.

Figures 1 and 2 show an example of a satin woven fabric used as a support for the wire harness binding adhesive tape of the present invention, and Figure 1 (A) shows one warp yarn 1 with three Figure 1 (B) is a surface view showing a state in which the weft thread passes over the weft thread 2 and then passes under one weft thread 2, contrary to the above, one weft thread 2
Figure 2 is a back view showing a state in which the threads pass over three warp threads 1 and then pass under one warp thread 1.
It is a n5ta side view.

F Warp type 1 and weft yarn 2 are both twine (yarn)
The thickness of the warp yarn 1 is usually in the range of 5.6 to 135, and the thickness of the weft yarn 2 is usually in the range of 11.2 to 270.
Each yarn is selected from a range of counts, and the thickness of the weft yarn 2 is set to be approximately 1.4 to 7.0 times (count) the thickness of the warp yarn 1.

In addition, the number of threads 1 is usually 40 to 120/25
From the range (2), the number of weft yarns 2 is usually selected from the range of 20 to 60/25■, and the number of warp yarns 1 is approximately 1.2 to 3. It is set to be 0 times.

In this way, the warp thread 1 is made thinner than the weft thread 2, and the number of threads inserted is greater than that of the warp thread 2, and this structure allows the thin warp thread 1 to float on the fabric surface for a long time. A surface exhibiting an appearance [the surface in Figure 1 (A) is a smooth surface with high smoothness, and the opposite surface [
The back view 1 in FIG. 1(B) is a rough surface with low smoothness.

The materials for the warp yarn 1 and weft yarn 2 are not particularly limited as long as they have the strength to be used as a support, that is, they have a tensile strength that can withstand the tension when forming a wire harness. Specifically, examples include inorganic fibers such as glass fibers, and organic fibers such as polyamide fibers and polyester fibers.

FIG. 3 shows an adhesive tape for wire harness bundling according to the present invention, in which an adhesive layer 4 is applied to the smooth surface (surface) of the satin woven fabric 3 having the above structure without being subjected to varnish treatment. The thickness of Aruni's adhesive tape for binding wire harnesses is generally about 0.1 to 0°6, among which the thickness of the satin fabric 3 is usually 0.07 to 0.50 mm, and the thickness of the adhesive layer 4 is usually about 0.07 to 0.50 mm. It is 0.03 to 0.10 mm.

The adhesive layer 4 is not particularly limited,
For example, a layer formed with a known adhesive may be mentioned, and it is selected and used appropriately considering the application of the adhesive tape for wire harness binding, especially heat resistance, durability, etc., but the most preferable one is Examples include silicone adhesives with good heat resistance.

In addition, in the above explanation, one warp thread 1 is used as the satin woven fabric 3.
(or weft 2) has three weft 2 (or weft 1)
) is used, but the present invention is not limited to this, and other known satin weaves, that is, one warp thread 1 (
Alternatively, various types of satin weave in which the weft threads 2) pass over at least two weft threads 2 (or warp threads 1) can be widely used.

In addition, as a means of varying the smoothness of the front and back surfaces of these satin woven fabrics, in addition to the means of varying the thickness and number of threads between the warp and weft yarns as explained above, in some cases, the thickness and the number of threads are varied. A method may be adopted in which only the number of threads to be driven is different between warp and weft threads.

(e) Effect The adhesive tape for wire harness bundling of the present invention has the above-mentioned structure, uses a non-faced satin woven fabric with different smoothness on the front and back surfaces as a tape-like object, and uses a satin woven fabric with a smooth surface on the smooth surface. By providing an adhesive layer on the tape and making it into an adhesive tape for binding wire harnesses, when the wire harnesses are bundled and folded, the wire harnesses can be bent to fit the shape of the car body very well due to misalignment of the fibers. We have it.

In addition, in the adhesive tape for wire harness bundling having such a structure, the adhesive layer is provided on the smooth surface of the satin woven fabric, so that the surface smoothness of the adhesive layer is higher than that of a plain woven fabric. This superior surface smoothness also has the effect of increasing the adhesion to the wire harness.

Furthermore, in addition to this good surface smoothness, the warp and weft yarns do not intersect closely as in plain woven fabrics, and the thin warp yarns exhibit a long floating appearance, making it easy for the adhesive layer to dig into the fabric's holes. As a result, the anchoring force of the adhesive layer to the satin woven fabric is large, while the adhesive layer has a rough surface with a small adhesive area, so the adhesive force to this back surface is small, and as a result, the adhesive layer has a large anchoring force against the satin woven fabric. It has the effect of preventing the film from being transferred to its own back surface and making it easier to unwind it.

(f) Examples Examples of the present invention will be described below in comparison with comparative examples.

Example: Glass yarn ECD-405-110 (11,
2) as the weft, plus thread ECK-75-11
0 (number 67, 5), the number of drives was 114 vertically, 725.4 mm, and 48 horizontally/25,4 m.
Using the satin woven fabric shown in FIGS. 1 and 2 as a support,
A commercially available silicone adhesive was applied to the smooth surface of this support to a thickness of 40 μm and dried to obtain the adhesive tape for wire harness binding of the present invention.

Example: Tetron filament number 75 was used as the warp thread, and Tetron filament number 100 was used as the weft thread.
2 / 25, 4 The satin woven fabric shown in Figures 1 and 2 is used as a support, and a commercially available acrylic adhesive is applied to the smooth surface of this support to a thickness of 40μ. The adhesive tape for wire harness binding of the present invention was obtained by applying and drying the adhesive tape as described above.

Comparative Example A plain woven fabric shown in Figure 4 with the same type and number of threads as in the example was used as a support, and one side of this support was the same as that used in example 1. A silicone adhesive was applied to the same thickness as in Example 1 and dried to obtain a conventional adhesive tape for comparison.

That is, as shown in FIG. 4, the plain woven fabric (supporting body) used here has warp threads 10 and weft threads 20 alternately exposed one by one on the front and back sides. Therefore, the smoothness of the front and back surfaces is substantially the same.

Comparative Example A plain woven fabric shown in FIG. 4 with the same type and number of threads as in Example 2 was used as a support, and one side of this support was the same as that used in Example 2. An acrylic adhesive was applied to the same thickness as in Example 2 and dried to obtain a comparative adhesive tape.

19 pieces of adhesive tape of each of the above examples and comparative examples.
- Cut 1% of these tapes to 0.21IaIφ
A bundle of 15 copper-vinyl coated wires was wrapped in a half-wrap spiral at a tape tension of 2 kg.

When the resulting bundle was brought into contact with the front panel of a car and the engine was driven to test whether or not the impact sound could be heard indoors, it was not heard at all, and the binding was good with no peeling at the end of the tape or delamination between the layers. The condition was maintained.

Next, we conducted a bending test for these bundles (JISK6911 load speed 100 load speed 1 sentence 00-), and the result was that the maximum load was incorrect when the bend angle of the bundle reached 120 degrees.
It was as shown in Person-2.

(Left below) Table 1 As is clear from the results shown in Table 1, the adhesive tape for wire harness bundling of the present invention allows a vinyl-coated wire bundle (wire harness) with excellent flexibility to be obtained. I understand.

For each adhesive tape of the above-mentioned natural resources and each comparative example,
The results of investigating the temporary adhesion force (JIS-C-2107) and unwinding force (JIS-Z-1524) to stainless steel are as follows.
It was as shown in the table.

Table 2 As is clear from the results shown in Table 2, the wire harness binding adhesive tape of the present invention can be easily unwound.
7, it can be seen that a large # and adhesion force to the adherend can be obtained.

Further, during the L test, almost no phenomenon of adhesive being transferred to the back surface of the film was observed during unwinding.

(g> Effects of the Invention The present invention uses a satin woven fabric that has not been subjected to face treatment 3!!! as a tape-like article and has different smoothness levels on the front and back surfaces, and provides an adhesive layer on the smooth surface of the satin woven fabric. Since it is an adhesive tape for binding wire harnesses, when the wire harnesses are bound and folded with this tape, it is possible to bend the wire harnesses to fit the shape of the car body without misalignment of the fibers. It has superior flexibility compared to conventional plain woven fabrics with the same weft thickness and number of threads, so this adhesive tape for wire harness binding has excellent workability when wrapping wire harnesses, and can be used in a wide range of applications. In addition, it has the effect of making it possible to bundle the wire harness reliably and extremely easily.

In addition, the present invention uses an unvarnished satin woven fabric with different smoothness levels on the front and back surfaces, and provides an adhesive layer on the smooth surface of the satin woven fabric to create an adhesive tape for wire harness binding. When it is made into a rolled body, the adhesive layer is difficult to transfer to its own back surface, it is easy to unwind, and it has a strong adhesion to the wire harness. Since there is no need to use an adhesive, a backing agent, or a varnish treatment, various problems caused by these treatments do not occur, and the method is particularly advantageous in terms of cost and application.

[Brief explanation of drawings]

FIG. 1(A) is a surface view of the satin woven fabric used in the present invention.
Figure (B) is the back view, Figure 2 is the ■-■ of Figure 1 (A)
A line sectional view, FIG. 3 is a sectional view of the adhesive tape for wire harness binding of the present invention using the satin woven fabric, and FIG. 4 is a surface view of the plain woven fabric. 1... warp, 2... weft, 3... satin woven fabric,
4... Adhesive layer.

Claims (1)

[Claims] (1) An adhesive tape used for bundling wire harnesses, which is made by providing an adhesive layer on the smooth surface of unvarnished satin fabric with different smoothness on the front and back surfaces. Adhesive tape for binding wire harnesses.