JP5232499B2 - Insulation cover sheet - Google Patents

Description

  The present invention relates to an insulating cover sheet for covering and covering a connection portion such as an electric wire or a lead-out portion.

In connection parts such as electric wires, it is necessary to perform an appropriate insulation treatment after connection. For this reason, conventionally, an insulating cover such as a dedicated type corresponding to the connecting portion has been provided (Patent Documents 1 and 2).
Japanese Utility Model Publication No.57-073896 No.06-031613

However, as a more general one, for example, as shown in FIG. 8, a rectangular insulating base sheet 1 provided with an adhesive layer 2 on one side and a release paper 3 provided on the adhesive layer 2 of the insulating base sheet 1 are provided. A sheet (insulation cover sheet) has been proposed.
When the insulating cover sheet S is used, the release paper 3 is peeled off. For example, in the electric wire (cable: stranded wire) 5 as shown in FIG. 9, the electric wire 5a to be worked is taken out and shown in FIG. In order to cover the connecting portion 5b, one side edge portion side of the insulating cover sheet S is pasted with the adhesive layer 2, and then the remaining insulating cover sheet S is wrapped. doing.

  However, as described above, when the release paper 3 is peeled off over the entire surface of the adhesive layer 2, the adhesive layer 2 is adhered to another electric wire side or the sheet is bent in the winding operation. There were problems such as adhesion between the two. If there is such an unexpected adhesion, it is necessary to re-adhere, but it is quite troublesome because it does not peel off easily. Further, when the adhesive layers 2 are bonded to each other, the strong adhesive force between the adhesive layers makes it difficult to peel off, and the sheet itself often has to be discarded. In any case, when these situations occur, a significant reduction in workability is inevitable.

  The present invention has been made in view of such a conventional problem, and at least a release paper portion is divided into two parts to be a main release paper and a sub release paper, and by providing a folded piece on the main release paper side, It is an object of the present invention to provide an insulating cover sheet that solves the conventional problems as described above.

The present invention according to claim 1 is an insulating base sheet provided with an adhesive layer on one side, a main release paper affixed on the adhesive layer of the insulating base sheet in at least two parts, and an adhesive region from the main release paper The insulating cover sheet is made of a small sub-release paper, and the main release paper has a non-adhesive folded piece.

  The present invention according to claim 2 is characterized in that the folded piece of the main release paper is composed of an extension portion of the main release paper and is folded from an adjacent boundary portion with the sub release paper. 1 in the insulating cover sheet.

  According to a third aspect of the present invention, there is provided the insulating cover sheet according to the first or second aspect, wherein the folded piece of the main release paper has a tensile portion extending outside the adhesion range of the insulating base sheet. .

  According to a fourth aspect of the present invention, there is provided the insulating cover sheet according to the first, second or third aspect, wherein the main release paper is two or more.

  According to a fifth aspect of the present invention, there is provided the insulating cover sheet according to the first, second, third or fourth aspect, wherein the sub-release paper has a peeling portion.

According to the insulating cover sheet of the present invention, the following effects can be obtained.
In use, first, the sub-release paper with a small adhesive area is peeled off first, and the adhesive layer is adhered (adhered) to the outer periphery of the connection part such as an electric wire, which is the object to be coated. Do. After that, if the sheet part on the main release paper side is lightly attached to the outer periphery of the connection part such as an electric wire, and the folded piece of the main release paper is pulled, the main release paper is peeled off, and the adhesive layer on the main release paper side is It is easily adhered to the outer periphery of the remaining part of the connection part such as an electric wire.
That is, after temporarily fixing and bonding, a desired covering can be easily insulated and coated by pulling the folded piece of the main release paper. At this time, since the adhesive area of the sub-release paper is set small, the temporary fixing adhesion can be performed easily and accurately. At this time, since the main release paper is still attached and in a non-peeling state, the adhesive area on the main release paper side adheres to another electric wire side, the adhesive layers of the sheet adhere to each other, etc. This problem is also fundamentally resolved.

FIG. 1 shows an example of an insulating cover sheet according to the present invention.
In the figure, an insulating cover sheet S1 includes a rectangular insulating base sheet 10 provided with an adhesive layer 20 on one side, and a main release paper 30 attached in two parts on the adhesive layer 20 of the insulating base sheet 10. It consists of sub-release paper 40.

As shown in the drawing, the sub release paper 40 has a smaller adhesive area than the main release paper 30 (at least equal to or less than the adhesive area of the main release paper). In this example, the left edge portion of the insulating base sheet 10 in the drawing is shown. The adhesive layer 20 is attached with a narrow width.
On the other hand, the main release paper 30 is wide on the wide area (remaining part) other than the adhesive area of the sub-release paper 40, that is, on the adhesive layer 20 extending from the middle of the left edge of the insulating base sheet 10 to the right edge. It is pasted. The main release paper 30 has a folded piece 32 that is in a non-adhesive state with respect to the adhesive layer 20 in addition to the adhesive portion 31 that is directly attached to the adhesive layer 20.

  For example, the folded piece 32 is preferably formed by an extended portion of the sticking portion 31, and is folded starting from the adjacent boundary portion L with the sub-release paper 40. The width (length) of the folded piece 32 is not particularly limited. However, as shown in the drawing, the folded piece 32 is preferably extended outside the adhesive range of the insulating base sheet 10, and the operator pulls the extended portion at the time of peeling. It is good to set it as the tension part 32a.

  The size of the insulating base sheet 10 may be a rectangular size that covers a covering object, for example, a connection portion such as an electric wire or a lead-out portion. The material is not particularly limited, but a plastic film, a composite type fiber fabric or fabric by paper impregnation or resin coating, paper fabric, a fabric of these single modes, or a rubber sheet (film), by rubber impregnation or rubber coating Any composite fiber fabric, fabric, paper, or the like may be used. In addition, the shape of the insulating base sheet 10 is not limited to the above rectangle, and may be a slightly deformed rectangle. Of course, depending on the application, an elliptical shape, a circular shape, a diamond shape, or a modified shape thereof may be used. The pressure-sensitive adhesive layer 20 is formed as a pressure-sensitive adhesive material coating layer or immersion layer (a layer formed by immersion in a pressure-sensitive adhesive tank), or a pressure-sensitive adhesive film layer (a layer to which a pressure-sensitive adhesive film is attached).

  As the base of the main and sub release papers 30 and 40, a normal paper is used, but the base is not limited to a paper. For example, a resin film can be used. A non-adhesive release layer that is not normally bonded to the adhesive layer 20 side is provided on one side of the base, but a mixed paper base mixed with a release material that is not bonded to the adhesive layer 20 side. In the case of a non-adhesive resin film, the release layer can be omitted.

For example, as shown in FIG. 2, when the insulating cover sheet S <b> 1 thus formed is used as a covering material for the electric wire 50, the sub release paper 40 is first peeled off. Then, the adhesive layer 20 portion peeled off from the sub release paper 40 is temporarily bonded to a desired portion (for example, between the left and right coating layers 52 straddling the connection portion of the internal conductor 51).
This temporary fixing adhesion is obstructed by the adhesive layer 20 on the main release paper 30 side, because the main release paper 30 is still attached except for the adhesive layer 20 portion of the sub-release paper 40 that has been peeled off. Can be done without. That is, there is no concern that the adhesive layer 20 on the main release paper 30 side adheres to other parts or the adhesive layers 20 adhere to each other.
Also, the temporary bonding itself can be easily performed as a trial because the adhesive area is narrow. Even if the temporarily fixed portion is slightly deviated from the target bonded portion, the adhesive region is narrow, so that it can be easily peeled off and redone. That is, good workability can be obtained.

  After the temporary bonding, as shown in the drawing, the insulating base sheet 10 is wrapped around the outer periphery of the electric wire 50 (between the portions of the left and right coating layers 52 of the internal conductor 51) with the main release paper 30 attached. And add lightly. Since this winding is properly positioned (positioning) by the above-described temporary fixing adhesion, it may be merely mechanically wound. Therefore, this operation can be easily performed.

Next, with this lightly attached state, the pulling portion 32a protruding (extruding) out of the insulating base sheet 10 of the main release paper 30 may be pulled in the arrow direction A.
Then, the folded piece 32 of the main release paper 30 is pulled out by sliding on the outer periphery 8 (the covering layer 52) of the electric wire 50, and the sticking portion of the main release paper 30 attached to the adhesive layer 20 by this drawing. 31 is also fed out while being peeled off, starting from the boundary portion L adjacent to the sub-release paper 40.

  Therefore, when the operator presses the insulating base sheet 10 from the outside in accordance with the feeding of the sticking portion 31 of the main release paper 30, the adhesive layer 20 on the main release paper 30 side is desired on the outer periphery of the electric wire 50. Glued in the form of On the other hand, the main release paper 30 is continuously taken out from the folded piece 32 to the sticking portion 31. These operations are not particularly troublesome and can be easily performed.

Conventionally, when an insulating base sheet is wound with the release paper completely peeled off, it is difficult to wind the insulation base sheet neatly around the outer periphery of the object to be coated, resulting in wrinkles on the sheet or unnecessary air remaining behind. In many cases, clean adhesion was not possible.
However, in the case of the insulating cover sheet S1, the sticking portion 31 is gradually peeled off by pulling the folded piece 32 of the main release paper 30, so that wrinkles or unnecessary air is generated by simple external pressure. A beautiful bond can be obtained without being left behind. That is, a significant reduction in adhesion failure can be expected, and good workability can be obtained.
At this time, since the main release paper 30 is removed in a state where the insulating base sheet 10 is wound, unnecessary entry of foreign matter or dust from the work environment is effectively prevented.
As a result, the pressure-sensitive adhesive layer 20 in a clean state is ensured and is adhered by the beautiful pressure-sensitive adhesive layer 20, so that a strong adhesive force can be obtained.

3 to 4 show other examples of the insulating cover sheet according to the present invention.
The insulating cover sheet S2 in FIG. 3 is a case where the main release paper 30 is formed of folded pieces 32 without the tension portion 32a, and the insulating release sheet S3 in FIG. 4 is further divided into two parts. This is the case. Other basic portions have the same configuration as that of the insulating cover sheet S1 of FIG.

In the insulating cover sheet S2 of FIG. 3, since there is no tension part 32a, when using it as a covering material of the electric wire 50 shown in FIG. 2 as in the insulating cover sheet S1 of FIG. After stripping off and temporarily bonding, the insulating base sheet 10 is gently wrapped around the outer periphery of the electric wire 50, and at the same time, the folded piece 32 of the main release paper 30 is gradually pulled.
Thereby, since the sticking part 31 of the main release paper 30 is peeled off gradually, if the operator presses the insulating base sheet 10 from the outside in accordance with the peeling of the sticking part 31, the adhesive layer of the insulating base sheet 10 20 is bonded to the outer periphery of the electric wire 50.
In this case, a little more familiarity is required as compared with the insulating cover sheet S1 of FIG. 1, but basically good workability can be obtained. At this time, the folded piece 32 becomes a tension part.
In addition, even if the length of the folded piece 32 is shorter than the adhesive region of the insulating base sheet 10, there is no particular problem in practical use.

In the case of the insulating cover sheet S3 in FIG. 4, there are two folded pieces 32 (sheets). Since each folded piece 32 has a tension portion 32a, the figure is similar to the insulating cover sheet S1 in FIG. When used as a covering material for the electric wire 50 shown in FIG. 2, it can be performed in exactly the same manner as the insulating cover sheet S1 of FIG. That is, the bonding operation can be easily performed by pulling one after another from the pulling portion 32 a inside the electric wire 50.
Note that the two folded pieces 32 may be combined with those without the tension portion 32a or only without the tension portion 32a. In the case of the folded piece 32 without the tension portion 32a, it may be performed simultaneously with the case of the insulating cover sheet S2 of FIG.
This insulating cover sheet S3 is useful when the adhesive area on the main release paper 30 side is wider (longer). This is because if the adhesive area is wide, the folded piece 32 becomes longer, and if it is a single folded piece 32, the extended length becomes correspondingly longer, and the handleability may be reduced. . Therefore, it is also possible to use three or more.

5 to 7 further show other examples of the insulating cover sheet according to the present invention. All of these insulating cover sheets S4 to S6 are provided with peeling portions 41 to 43 at a part thereof (for example, corner portions) in order to improve the peelability of the sub release paper 40. Other basic portions have the same configuration as that of the insulating cover sheet S1 of FIG.
When the peeling part 41 removes a part of the adhesive layer 20 to be in a non-adhesive state, the peeling part 42 forms a mini folded piece from a part of the sub-release paper 40, This is a case where an extended piece from a part of the sub release paper 40 is formed.
In any case, when the sub-release paper 40 is peeled off, the sub-release paper 40 can be easily peeled off by turning or pulling this portion. Conventionally, the better the adhesiveness of the sub-release paper 40, the more difficult it is to peel off the sub-release paper 40 itself. However, the peeling portions 41 to 43 solve this problem.

It is the perspective view which showed an example of the cover sheet for insulation which concerns on this invention. It is the longitudinal cross-sectional view which showed the usage condition of the cover sheet for insulation of FIG. It is the perspective view which showed the other example of the cover sheet for insulation which concerns on this invention. It is the perspective view which showed the other example of the cover sheet for insulation which concerns on this invention. It is the fragmentary perspective view which showed the other example of the insulating cover sheet which concerns on this invention. It is the fragmentary perspective view which showed the other example of the insulating cover sheet which concerns on this invention. It is the fragmentary perspective view which showed the other example of the insulating cover sheet which concerns on this invention. It is the perspective view which showed the conventional cover sheet for insulation. It is the schematic explanatory drawing which showed the usage condition of the cover sheet for insulation of FIG. It is the side view which showed the insulation coating part by the cover sheet for insulation of FIG.

Explanation of symbols

  S1 to S6 ... cover sheet for insulation, 10 ... insulating base sheet, 20 ... adhesive layer, 30 ... main release paper, 31 ... sticking part, 32 ... folded piece, 32a ... Tensile part, 40 ... Sub-release paper, 41-43 ... Peeling part

Claims (5)

An insulating base sheet provided with an adhesive layer on one side, a main release paper affixed on the adhesive layer of the insulating base sheet in at least two divisions, and a sub-release paper having a smaller adhesive area than the main release paper , An insulating cover sheet, wherein the main release paper has a non-adhesive folded piece. 2. The insulating cover sheet according to claim 1, wherein the folded piece of the main release paper is composed of an extended portion of the main release paper and is folded from an adjacent boundary portion with the sub release paper. The insulating cover sheet according to claim 1, wherein the folded piece of the main release paper has a tensile portion extending outside the adhesion range of the insulating base sheet. 4. The insulating cover sheet according to claim 1, wherein the main release paper is 2 or more. The insulating cover sheet according to claim 1, wherein the sub release paper has a peeling portion.

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