JP7506954B2 - Adhesive tape - Google Patents

Description

The present invention relates to an adhesive tape provided with a release paper.

An example of a conventional adhesive tape is that described in Patent Document 1. The adhesive tape described in this document is a double-sided tape wound around a circular core. In this adhesive tape, both the front and back surfaces are adhesive. However, release paper is attached to the front surface of the adhesive tape. Therefore, the adhesive surface is only exposed on the back surface of the adhesive tape. This adhesive tape is used in a state where it is rotatably held by a tape cutter. The tape cutter has a pair of side plate portions (face plate), a bottom plate portion, and a cutting blade. The pair of side plate portions cover the adhesive tape from both sides. The bottom plate portion is connected to the lower end of each side plate portion so as to connect the side plate portions to each other. The cutting blade is provided at the end portion of the bottom plate portion.

Japanese Patent Application Laid-Open No. 9-48553

The above-mentioned adhesive tape is unwound from the gap between a pair of side panels and cut by a cutting blade. When the cut adhesive tape (cut piece) is to be used, the release paper is peeled off from the surface. The peeled release paper is disposed of as waste. It is desirable that such papers disposed of as waste be recycled. However, release paper is difficult to recycle because the paper cannot be separated from the resin that coats its surface. Therefore, from the perspective of the SDGs (Sustainable Development Goals), ingenuity is required to reduce the amount of release paper discharged.

The present invention has been made in consideration of the above problems, and aims to provide an adhesive tape that helps reduce the amount of release paper discarded.

The adhesive tape according to the present invention comprises a tape body having a first surface which is an adhesive surface, and a release paper affixed to the first surface, the width of the release paper being smaller than the width of the tape body, and a first distance which is the distance from the release paper to a first side end of the tape body being larger than a second distance which is the distance from the release paper to a second side end of the tape body.

This adhesive tape has a tape body with a first surface being an adhesive surface. A release paper is attached to the first surface of the tape body. The width of the release paper is smaller than the width of the tape body. In this case, the amount of release paper discharged can be reduced compared to when the width of the release paper is equal to the width of the tape body.

According to the present invention, an adhesive tape is realized that helps reduce the amount of release paper discarded.

1 is a side view showing one embodiment of a pressure-sensitive adhesive tape according to the present invention. 2 is a plan view showing a pull-out portion 1b of the adhesive tape of FIG. 1. 2 is a bottom view showing the pull-out portion 1b of the adhesive tape of FIG. 1. FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2 is a diagram showing a part of an end surface of a wound portion 1a of the adhesive tape of FIG. 1 . 2 is a diagram for explaining the effect of the adhesive tape of FIG. 1 . FIG. 2 is a diagram for explaining the effect of the adhesive tape of FIG. 1 . FIG. 2 is a diagram for explaining the effect of the adhesive tape of FIG. 1 . FIG. 2 is a diagram for explaining the effect of the adhesive tape of FIG. 1 . FIG. 13 is a plan view illustrating a modified example of the release paper 20. FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are given the same reference numerals and duplicated explanations will be omitted.

Figure 1 is a side view showing one embodiment of an adhesive tape according to the present invention. The adhesive tape 1 is wound. The adhesive tape 1 may be wound around a circular core, or may be wound without such a core. The adhesive tape 1 is composed of a wound portion 1a and a pulled-out portion 1b. The wound portion 1a is the wound portion of the adhesive tape 1. The pulled-out portion 1b is the portion of the adhesive tape 1 pulled out from the wound portion 1a.

Figures 2 and 3 are a plan view and a bottom view, respectively, showing the pull-out portion 1b. Also, Figure 4 is a cross-sectional view taken along line IV-IV in Figure 2. The adhesive tape 1 comprises a tape body 10 and a release paper 20. The tape body 10 has a front surface 12 (first surface) and a back surface 14 (second surface). The front surface 12 is an adhesive surface. The entire front surface 12 is an adhesive surface. The adhesive tape 1 is a single-sided adhesive tape. In other words, of the front surface 12 and the back surface 14, only the front surface 12 is an adhesive surface. Examples of single-sided adhesive tapes include cellophane tape, gap tape, anti-slip tape, and anti-condensation tape.

The tape body 10 has a base material and an adhesive layer provided on the base material. This adhesive layer constitutes the adhesive surface described above. The base material is made of, for example, cellophane, felt, sponge, or aluminum. The thickness t1 of the tape body 10 (see FIG. 4) may be different from or equal to the thickness t2 of the release paper 20. In the former case, the thickness t1 may be greater than or less than the thickness t2.

The release paper 20 is attached to the surface 12 of the tape body 10. The release paper 20 is attached only to a portion of the surface 12. That is, the release paper 20 is attached only to a portion of the adhesive surface of the surface 12. The width w1 of the release paper 20 (see FIG. 2) is smaller than the width w2 of the tape body 10. Therefore, the release paper 20 is attached only to a portion of the surface 12 in the width direction of the tape body 10 (the vertical direction in FIGS. 2 and 3). Here, the width direction of the tape body 10 is perpendicular to the extension direction of the tape body 10 (the horizontal direction in FIGS. 2 and 3). As a result, in the tape body 10, a portion of the surface 12 is covered with the release paper 20, while the adhesive surface is exposed on the remaining portion of the surface 12.

The release paper 20 overlaps the center line C1 of the tape body 10. However, the center line C2 of the release paper 20 does not coincide with the center line C1 in a planar view. The center lines C1 and C2 are imaginary straight lines that bisect the tape body 10 and the release paper 20 in the width direction, respectively. The release paper 20 is continuously affixed to the surface 12 in the extension direction of the tape body 10. In other words, the release paper 20 is affixed to the entire surface 12 in the extension direction of the tape body 10. The entire release paper 20 consists of one continuous piece of release paper.

The release paper 20 is spaced apart from both the side end 10a (first side end) and the side end 10b (second side end) of the tape body 10. The distance d1 (first distance) from the release paper 20 to the side end 10a is greater than the distance d2 (second distance) from the release paper 20 to the side end 10b. The distance d1 is equal to the distance between the side end 20a (the side end closer to the side end 10a) of the release paper 20 and the side end 10a in a plan view. The distance d2 is equal to the distance between the side end 20b (the side end closer to the side end 10b) of the release paper 20 and the side end 10b in a plan view. The difference between the distance d1 and the distance d2 is preferably 2 mm or more, and more preferably 5 mm or more. The distance d1 is preferably twice or more than the thickness t2 of the release paper 20. Similarly, the distance d2 is preferably twice or more than the thickness t2. It is preferable that each of the distances d1 and d2 is 2 mm or more and 10 mm or less. It is preferable that the width w1 of the release paper 20 is greater than the sum of the distances d1 and d2.

5 is a diagram showing a part of the end surface of the winding portion 1a. The figure shows an end surface perpendicular to the extension direction of the tape body 10. In the winding portion 1a, a part of the tape body 10 overlaps with another part of the tape body 10 via the release paper 20. In the area where the release paper 20 is not interposed, the front surface 12 and the back surface 14 face each other. However, the opposing front surface 12 and back surface 14 do not contact each other. In this way, the adhesive tape 1 is configured such that, in the wound state, the front surface 12 does not contact the back surface 14 facing the front surface 12. Such a configuration can be realized, for example, by adjusting elements such as the rigidity of the tape body 10, the thickness t2 of the release paper 20, and the distances d1 and d2.

The effects of the adhesive tape 1 will now be described. The adhesive tape 1 is provided with a tape body 10 whose surface 12 is an adhesive surface. A release paper 20 is attached to the surface 12 of the tape body 10. The width w1 of the release paper 20 is smaller than the width w2 of the tape body 10. In this case, the amount of release paper 20 discharged can be reduced compared to when the width w1 is equal to the width w2. Thus, an adhesive tape 1 that contributes to reducing the amount of release paper 20 discharged has been realized.

In addition, by making the width w1 of the release paper 20 smaller than the width w2 of the tape body 10, it becomes possible to align the adhesive tape 1 with respect to the adherend before peeling off the release paper 20 from the surface 12. Such alignment can be performed, for example, as follows. As shown in FIG. 6, the portion of the surface 12 to which the release paper 20 is not attached (the portion between the release paper 20 and the side end 10a, or the portion between the release paper 20 and the side end 10b) is attached (temporarily attached) to the adherend 90. At this time, it is confirmed whether there is any deviation in the position of the tape body 10, and if there is any deviation, the temporary attachment is redone. After the position of the tape body 10 is determined, the release paper 20 is peeled off from the tape body 10 as shown in FIG. 7. After peeling off the release paper 20 as shown in FIG. 8, the remaining portion of the surface 12 is attached to the adherend 90 as shown in FIG. 9. This allows the tape body 10 to be accurately attached to the desired location of the adherend 90. As described above, according to this embodiment, the adhesive tape 1 can be aligned with the release paper 20 attached to the surface 12. Moreover, since the width w1 of the release paper 20 is smaller than the width w2 of the tape body 10, it is also easy to peel off the release paper 20 after alignment.

Providing the release paper 20 in this manner provides the following advantages. First, it is possible to unwind the adhesive tape 1 without touching the adhesive surface of the surface 12 of the tape body 10. This makes it easier to pull the adhesive tape 1 and makes it less likely for fingerprints to adhere to the surface 12. It also prevents dust from adhering to the adhesive surface of the surface 12 and reduces the adhesive strength of the adhesive surface. Furthermore, the shape of the tape body 10 is stabilized, making it less likely for the tape body 10 to twist. This allows the adhesive tape 1 to be unwound smoothly.

It is advantageous for the width w1 of the release paper 20 to be large in order to fully enjoy the above-mentioned advantages of providing the release paper 20. From this perspective, it is preferable that the width w1 is larger than the sum of the distances d1 and d2.

The distance d1 from the release paper 20 to the side edge 10a is greater than the distance d2 from the release paper 20 to the side edge 10b. In this case, the width of the portion (first portion) between the release paper 20 and the side edge 10a on the surface 12 is different from the width of the portion (second portion) between the release paper 20 and the side edge 10b. This allows for greater freedom in aligning the adhesive tape 1 with respect to the adherend, compared to when the distance d1 is equal to the distance d2. In other words, when aligning the adhesive tape 1, it is possible to select the first or second portion that is more suitable for temporary fixing depending on the size, shape, etc. of the adherend.

A larger difference between distance d1 and distance d2 is advantageous in increasing the degree of freedom in aligning the adhesive tape 1. From this perspective, the difference between distance d1 and distance d2 is preferably 2 mm or more, and more preferably 5 mm or more.

If the distance d1 is not sufficiently large relative to the thickness t2 of the release paper 20, the release paper 20 may get in the way and make it difficult to temporarily attach the first portion of the surface 12 to the adherend. From this perspective, it is preferable that the distance d1 is at least twice the thickness t2.

A larger distance d1 is advantageous for stably temporarily fixing the first portion of the front surface 12 to the adherend. From this viewpoint, it is preferable that the distance d1 is 2 mm or more. On the other hand, if the distance d1 is too large, it may be difficult to realize a configuration in which the front surface 12 does not contact the back surface 14 in the winding portion 1a. From this viewpoint, it is preferable that the distance d1 is 10 mm or less.

If the distance d2 is not sufficiently large relative to the thickness t2 of the release paper 20, the release paper 20 may get in the way and make it difficult to temporarily attach the second portion of the surface 12 to the adherend. From this perspective, it is preferable that the distance d2 is at least twice the thickness t2.

A larger distance d2 is advantageous for stably temporarily fixing the second portion of the front surface 12 to the adherend. From this viewpoint, it is preferable that the distance d2 is 2 mm or more. On the other hand, if the distance d2 is too large, it may be difficult to realize a configuration in which the front surface 12 does not contact the back surface 14 in the winding portion 1a. From this viewpoint, it is preferable that the distance d2 is 10 mm or less.

The release paper 20 is spaced apart from both the side end 10a and the side end 10b of the tape body 10. In this case, the side end 20a of the release paper 20 is shifted from the side end 10a, and the side end 20b of the release paper 20 is shifted from the side end 10b. This makes it easier to peel off the release paper 20 from either the side end 20a or the side end 20b. In particular, when the first portion of the surface 12 is temporarily attached to the adherend, the release paper 20 is peeled off from the side end 20b, and when the second portion of the surface 12 is temporarily attached to the adherend, the release paper 20 can be peeled off smoothly by peeling it off from the side end 20b, and from the side end 20a, respectively.

The entire release paper 20 is made up of a single piece of release paper. In this case, the entire release paper 20 can be removed from the surface 12 by simply peeling the release paper 20 once.

The release paper 20 is continuously attached to the surface 12 in the extension direction of the tape body 10. In this case, the pull-out portion 1b of the adhesive tape 1 is less likely to slacken. This makes it less likely that the adhesive surfaces of the pull-out portion 1b will stick to each other.

The release paper 20 overlaps the center line C1 of the tape body 10. This makes it possible to prevent fingers from touching the adhesive surface of the front surface 12 when the center line C1 portion of the tape body 10 is pinched. By pinching and pulling the center line C1 portion, the adhesive tape 1 can be smoothly unwound.

The entire surface 12 of the tape body 10 is an adhesive surface. This allows the adhesive tape 1 to be stably attached to the adherend.

When the thickness t1 of the tape body 10 is greater than the thickness t2 of the release paper 20, the tape body 10 is less likely to bend. This makes it difficult to peel off the release paper 20 and then gradually apply the tape body 10 to the adherend while aligning it. Therefore, an adhesive tape 1 that can be aligned even with the release paper 20 still attached to the surface 12 is particularly useful.

When the base material of the tape body 10 is made of felt, sponge, or aluminum, it is difficult to freely deform the tape body 10 compared to when the base material is cellophane. Therefore, it is difficult to perform the task of gradually attaching the tape body 10 to the adherend while aligning it after peeling off the release paper 20. Therefore, an adhesive tape 1 that can be aligned even with the release paper 20 attached to the surface 12 is particularly useful.

The adhesive tape 1 is a single-sided adhesive tape. In this case, it goes without saying that the surface with the release paper 20 attached (surface 12) is applied to the adherend first. Therefore, an adhesive tape 1 that can be aligned even with the release paper 20 still attached to surface 12 is particularly useful.

The adhesive tape 1 is wound. In this case, compared to when the adhesive tape 1 is not wound, it is possible to prevent dust from adhering to the portion of the surface 12 to which the release paper 20 is not attached, and to prevent that portion from drying out.

The adhesive tape 1 is configured so that, when wound, the front surface 12 does not come into contact with the rear surface 14 opposite the front surface 12. If the front surface 12 comes into contact with the rear surface 14, there is a problem that the adhesive strength of the adhesive surface of the front surface 12 may decrease. This problem is particularly noticeable when the base material of the tape body 10 is made of felt or sponge. In this regard, the adhesive tape 1 configured so that the front surface 12 does not come into contact with the rear surface 14 makes it possible to avoid the above problem.

The present invention is not limited to the above embodiment, and various modifications are possible. In the above embodiment, the release paper 20 is separated from both the side end 10a and the side end 10b of the tape body 10. However, the release paper 20 may be separated from the side end 10a but not from the side end 10b, as shown in FIG. 10, for example. That is, the side end 20b of the release paper 20 may be aligned with the side end 10b. In that case, the distance d2 from the release paper 20 to the side end 10b is 0. In the figure, the release paper 20 overlaps the center line C1 of the tape body 10.

In the above embodiment, the case where the entire surface 12 of the tape body 10 is an adhesive surface has been exemplified. However, only a portion of the surface 12 may be an adhesive surface. In this case where only a portion of the surface 12 is an adhesive surface, it is preferable that the release paper 20 is attached only to a portion of the adhesive surface of the surface 12.

In the above embodiment, the adhesive tape 1 is a single-sided adhesive tape. However, the adhesive tape 1 may be a double-sided adhesive tape (two-sided tape) in which both the front surface 12 and the back surface 14 are adhesive surfaces. In that case, the release paper 20 may be attached to the back surface 14 of the tape body 10. In that case, the back surface 14 corresponds to the "first surface" and the front surface 12 corresponds to the "second surface."

1 Adhesive tape 1a Winding portion 1b Pull-out portion 10 Tape body 10a Side end (first side end)
10b Side edge (second side edge)
12 Surface (first surface)
14 Back side (second surface)
20 Release paper 20a Side end 20b Side end 90 Adherend

Claims (17)

a tape body having a first surface which is an adhesive surface;
a release paper attached to the first surface,
The width of the release paper is smaller than the width of the tape body,
a first distance from the release paper to a first side end of the tape body is greater than a second distance from the release paper to a second side end of the tape body;
The adhesive tape , wherein the second distance is 2 mm or more . The adhesive tape according to claim 1 ,
An adhesive tape, wherein the difference between the first distance and the second distance is 2 mm or more. The adhesive tape according to claim 2,
An adhesive tape, wherein the difference between the first distance and the second distance is 5 mm or more. The adhesive tape according to claim 1 ,
The first distance is at least twice the thickness of the release paper. The adhesive tape according to claim 1 ,
The adhesive tape, wherein the first distance is 10 mm or less. The adhesive tape according to claim 1 ,
The second distance is at least twice the thickness of the release paper. The adhesive tape according to claim 1 ,
The adhesive tape, wherein the second distance is 10 mm or less. The adhesive tape according to claim 1 ,
The width of the release paper is greater than the sum of the first and second distances. The adhesive tape according to any one of claims 1 to 8 ,
The entire release paper of the adhesive tape is made of a single piece of release paper. The adhesive tape according to any one of claims 1 to 8 ,
The release paper is attached continuously to the first surface in the extending direction of the tape body. The adhesive tape according to any one of claims 1 to 8 ,
The release paper overlaps the center line of the tape body. The adhesive tape according to any one of claims 1 to 8 ,
An adhesive tape in which the entire first surface is the adhesive surface. The adhesive tape according to any one of claims 1 to 8 ,
The thickness of the tape body is greater than the thickness of the release paper. The adhesive tape according to any one of claims 1 to 8 ,
The base material of the tape body is an adhesive tape made of felt, sponge, or aluminum. The adhesive tape according to any one of claims 1 to 8 ,
The adhesive tape is a single-sided adhesive tape in which, of the first and second surfaces of the tape body, only the first surface is an adhesive surface. The adhesive tape according to any one of claims 1 to 8 ,
The adhesive tape is a wound adhesive tape. The adhesive tape according to claim 16 ,
The adhesive tape is configured such that, when wound, the first surface of the tape body does not come into contact with the second surface of the tape body that faces the first surface.

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