JPH10140101A - Self-adhesive marking film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable unnecessary parts of a self-adhesive marking film to be easily and quickly removed and thus remarkably improve the workability by setting the peeling strength of a self-adhesive layer in a specified range. SOLUTION: A self-adhesive marking film is obtd. by forming a self-adhesive layer 2 on a release paper 1 and forming, on the self-adhesive layer 2, a design layer 3 which has markings such as characters or patterns. The release paper 1 has a paper 4 as the base, on one side of which a thin resin layer 5 is formed. On the resin layer 5, a release agent layer 6 is formed, which is brought into contact with the self-adhesive layer 2 in a peelable state. On the other side of the paper 4, a curl prevention layer 7 is formed. The strength of peeling the self-adhesive layer from the release paper 1 is set at 10-100g/25mm. Thus, only unnecessary parts of the self-adhesive marking film can be peeled easily without fail by a suitable power without casuing the folding or breaking of the film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an adhesive marking film, and more particularly to a so-called debris removal measure for removing unnecessary portions after cutting into a mark shape such as a character or a figure.

[0002]

2. Description of the Related Art In general, adhesive marking films are used for decorative purposes such as indoor and outdoor signboards, fleet marking of trucks, vending machines, and the like. The basic structure includes a release paper, an adhesive layer releasably laminated on the release paper, and a design layer laminated on the adhesive layer.

In order to form a predetermined mark on the adhesive marking film, the design layer and the pressure-sensitive adhesive layer are cut into a predetermined mark shape by a cutting machine or hand-cutting, and an unnecessary portion of the design layer and the pressure-sensitive adhesive other than the mark are cut. I try to remove the layers. The mark thus formed is peeled off from the release paper when necessary, and is attached to a marking portion of the adherend.

[0004]

By the way, up to now,
In the adhesive marking film as described above, attention has been paid to the ease of sticking the mark to the adherend, the adhesive properties after sticking, and the like, and little consideration has been given to the scrap removal property.

[0005] Therefore, if the peeling force of the pressure-sensitive adhesive layer on the release paper is too weak, an unnecessary mark may be peeled off unless an unnecessary portion is carefully removed during scrap removal. On the other hand, if the release force of the pressure-sensitive adhesive layer on the release paper is too strong, it will not be a problem for relatively small characters and designs, but for large characters and designs, a strong force is required at the time of scrap removal, and moreover, When scraps are removed, the adhesive marking film may be broken or broken. Therefore, there is a problem that it takes patience and time to remove debris, and the workability is significantly reduced.

The present invention has been made in view of such a point, and an object of the present invention is to quickly remove debris.

[0007]

Means for Solving the Problems To achieve the above object, the present invention is characterized in that the peeling force of an adhesive layer on release paper is specified.

More specifically, the present invention is directed to an adhesive marking film in which an adhesive layer is releasably laminated on release paper, and a design layer is laminated on the adhesive layer. Taken.

That is, a first solution of the present invention is to provide a pressure-sensitive adhesive layer with a release force of 10 to 100 g /
It is characterized by being set to 25 mm.

With the above arrangement, according to the first solution of the present invention, only the unnecessary portion can be reliably and easily peeled off from the release paper with an appropriate force without breaking or breaking the adhesive marking film. Such a portion is not peeled off from the release paper, and therefore, the scrap removal is quickly performed without paying much attention, and the workability is further improved.

According to a second aspect of the present invention, in the first aspect, as the release paper, paper, a thin film resin layer laminated on one surface of the paper, and a laminate of the thin film resin layer; It is characterized by having a release agent layer that comes into contact with the pressure-sensitive adhesive layer in a releasable manner.

With the above arrangement, according to the second solution of the present invention, in cutting, the cutter blade hardly reaches the paper due to the presence of the thin film resin layer, and the cutter blade is cut so as to reach the thin film resin layer. As a result, the pressure-sensitive adhesive layer is reliably cut, and the mark is reliably peeled off from the release paper at the time of marking.

According to a third aspect of the present invention, in the second aspect, the thickness of the thin film resin layer is set to 15 to 20 μm.

According to the third aspect of the present invention, when the thickness of the thin film resin layer is less than 15 μm, when the adhesive is applied to the release agent layer of the release paper and then dried, The air inside the paper expands and the thin film resin layer rises from the release paper, causing a foaming phenomenon between the two, causing delamination, or a serious defect such as the cutter blade entering too deeply during cutting. However, such a situation does not occur. On the other hand, when the thickness of the thin film resin layer exceeds 20 μm, the thin film resin layer plays a role of a cushion during cutting, resulting in insufficient cutting of the pressure-sensitive adhesive layer, or a pressure-sensitive adhesive layer during scrap removal. In this case, the cutting portion is brought into a state of re-adhesion, so that a necessary portion of the mark is also peeled off, but such a situation does not occur.

According to a fourth aspect of the present invention, in the second aspect, a curl preventing resin layer is laminated on the other surface of the paper.

With the above arrangement, according to the fourth solution of the present invention, the other surface of the paper is covered with the curl preventing resin layer and does not come into contact with the outside air, and is dimensionally stable under the influence of moisture in the air. Does not deteriorate and does not curl. Also, there is no delamination due to the influence of curling.

According to a fifth aspect of the present invention, in the fourth aspect, the outer surface of the curl preventing resin layer is roughened.

According to the fifth aspect of the present invention, when the product (adhesive marking film) is wound into a roll, the product is placed between the design layer and the back surface of the release paper (curl prevention resin layer). The intervening air smoothly escapes through the fine irregularities due to the surface roughening, and the intervening air does not cause avatar-like glossy blurring on the surface of the design layer and impairs the appearance. Absent.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an adhesive marking film according to an embodiment of the present invention. The adhesive marking film includes a release paper 1, an adhesive layer 2 is releasably laminated on the release paper 1, and a design layer 3 serving as a mark such as a character or a pattern is provided on the adhesive layer 2. Are laminated. The base material 1 includes a paper 4 as a base thereof, and a thin film resin layer 5 is laminated on one surface (the upper surface in FIG. 1) of the paper 4. Further, a release agent layer 6 is laminated on the thin-film resin layer 5, and the release agent layer 6 comes into contact with the pressure-sensitive adhesive layer 2 in a releasable manner. The other side of the paper 4 (FIG. 1)
The lower surface is laminated with a curl preventing resin layer 7, and the outer surface of the curl preventing resin layer 7 is roughened.

The design layer 3 is made of, for example, a simple substance such as polyvinyl chloride, an ethylene-vinyl chloride copolymer, an acrylic resin, a fluororesin, or a composite thereof, and is required depending on the intended use. What has physical properties should just be selected suitably, and it is not specifically limited.

The pressure-sensitive adhesive layer 2 is made of, for example, an acrylic pressure-sensitive adhesive, and may be appropriately selected from those having the required physical properties according to the intended use as described above.
There is no particular limitation.

As the base paper 4 of the release paper 1, for example, glassine paper, woodfree paper, kraft paper, or the like can be used.

For the thin film resin layer 5, for example, a synthetic resin film such as a low-density, medium-density, or high-density polyethylene film can be used.・ High density is desirable. The presence of the thin film resin layer 5 makes it difficult for the blade of the cutter to reach the paper 4 during cutting, and the cutting of the blade of the cutter so as to reach the thin film resin layer 5 allows the adhesive layer 3 to be formed. Cutting can be reliably performed, and the mark can be reliably peeled off from the release paper 1 at the time of marking.

For the release agent layer 6, for example, a silicone release agent can be used.

The curl preventing resin layer 7 may be of any kind as long as it can prevent the paper 4 from curling. The laminating method may be laminating a film or coating. The outer surface (the lower surface in FIG. 1) of the curl preventing resin layer 7 is roughened to form fine irregularities (not shown). The surface roughening (matting) may be performed by, for example, a mechanical process such as embossing or a matting process which is generally performed by coating with a silica-based matting agent. The presence of the curl preventing resin layer 7 makes it possible to prevent the paper 4 from being exposed to the moisture in the air, to prevent the dimensional stability from being deteriorated due to the humidity of the paper 4, and to prevent the paper 4 from curling. And delamination due to the effect of curling can be prevented. Further, since fine irregularities are formed on the surface of the curl prevention resin layer 7 by the roughening (mat treatment), when the product (adhesive marking film) is wound into a roll, the design layer 3
The air between the mold release paper 1 (curl prevention resin layer 7) and the back surface can be smoothly released through the fine irregularities, and the avatar-like gloss blur on the surface of the design layer 3 due to the presence of air Can be eliminated, and the appearance can be improved.

As a feature of the present invention, the peeling force of the pressure-sensitive adhesive layer 2 from the release paper 1 is set to 10 to 100 g / 25 mm. Thus, the peeling force is 10 to 100 g /
The reason why the thickness is set to 25 mm is that if the thickness is less than 10 g / 25 mm, the peeling force is too weak, and there is a possibility that the necessary mark portion may be peeled off unless an unnecessary portion is carefully removed during scrap removal. On the other hand, if the peeling force exceeds 100 g / 25 mm, on the contrary, the peeling force is too strong and a strong force is required at the time of scrap removal, and if the scrap is forcibly removed, the adhesive marking film may be broken or broken. .
Therefore, the peeling force of the pressure-sensitive adhesive layer 2 to the release paper 1 is 1
If it is outside the range of 0 to 100 g / 25 mm, it takes patience and time to remove the debris, and the workability will be significantly reduced.

The thin film resin layer 5 has a thickness of 15 to
It is set to 20 μm. Thus, the thickness is 15 to 2
The reason why the thickness is set to 0 μm is that if the thickness is less than 15 μm, when the adhesive is applied to the release agent layer 6 of the base material 1 and then dried, the air in the paper 4 expands and the thin film resin layer 5 rises from the paper 4,
This is because a foaming phenomenon occurs between the two, and delamination occurs, or a serious defect such as an excessively deep blade of the cutter during cutting occurs. on the other hand,
When the thickness exceeds 20 μm, the thin film resin layer 5 serves as a cushion during cutting, and the cutting of the pressure-sensitive adhesive layer 3 becomes insufficient, or the cutting portion of the pressure-sensitive adhesive layer 3 is re-adhered when removing debris. Therefore, even a necessary portion of the mark is to be peeled off.

Next, Examples of the pressure-sensitive adhesive marking film constituted as described above are listed together with Comparative Examples, and the results are shown in Table 1.

(Example) The design layer 3 was prepared by processing 30 parts by weight of a plasticizer: diethylhexyl phthalate (DOP) and 1.5 parts by weight of a Ba-Zn-based stabilizer with respect to 100 parts by weight of polyvinyl chloride. A compound was prepared by mixing 1.5 parts by weight of an auxiliary agent and 10.0 parts by weight of titanium oxide,
An 80 μm thick colored film formed by a calender method was used.

As the release paper 1, a thin film resin layer 5 made of a medium density polyethylene film having a thickness of 18 μm is laminated on one surface of a paper 4 made of high quality paper of 110 g / m ² , and an adhesive layer 2 is formed thereon. Was treated with a silicone-based release agent so that the release force became 40 g / 25 mm to form a release agent layer 6. On the other surface of the high-quality paper (paper 4), a carboxylic acid-based resin coat layer is laminated to prevent curling of the high-quality paper (paper 4) due to humidity to form a curl prevention resin layer 7. Matt treatment was applied.

An adhesive (acrylic: SK Dyne 1340, manufactured by Soken Chemical Co., Ltd.) is applied to the release paper 1 obtained as described above so as to have a thickness of 30 μm after drying.
Was formed, and the dried product was bonded to the design layer 3 composed of the above colored film to obtain an adhesive marking film.

(Comparative Example 1) As the design layer 3, an 80 µm colored film was obtained by the same composition and method as in the example.

As the release paper 1, a thin film resin layer 5 made of a medium density polyethylene film having a thickness of 22 μm is laminated on one surface of a paper 4 made of high quality paper of 110 g / m ² , and an adhesive layer 2 is formed thereon. Was treated with a silicone-based release agent so that the release force was 5 g / 25 mm to form a release agent layer 6. The other surface of the high-quality paper (paper 4) has a thickness of 22 μm to prevent curling of the high-quality paper (paper 4) due to humidity.
A medium-density polyethylene film was laminated to form a curl preventing resin layer 7. However, no mat treatment was applied.

The release paper 1 obtained as described above was coated with the same pressure-sensitive adhesive as in the example, and the dried paper was bonded to the design layer 3 composed of the colored film to obtain a pressure-sensitive marking film.

Comparative Example 2 Adhesive Layer 2 for Release Paper 1
The adhesive marking film was obtained in the same manner as in Comparative Example 1, except that the peeling force was set to 120 g / 25 mm and the thickness of the curl preventing resin layer 7 was set to 20 μm.

The adhesive marking films of Examples and Comparative Examples 1 and 2 obtained as described above were cut using a cutting machine to cut a character having a round Gothic font and a size of 20 mm square. The pressure-sensitive adhesive re-adhesion during scrap removal and the scrap removal properties were evaluated. The peeling force of the base material 1 at that time was based on JIS Z-0237 (width 25 mm, speed 300 mm / min).

As is clear from Table 1, in the examples, the cutting property was good, the cutting portion of the pressure-sensitive adhesive did not adhere again, and the debris-removing property was good. Since the peeling force of the layer 2 is weak at 5 g / 25 mm and the thickness of the thin film resin layer 5 is 22 μm, which is thicker than that of the embodiment, there is a little difficulty in the cutting property, and the cutting point of the adhesive re-adheres. Also, the necessary character portion was peeled off. Further, in Comparative Example 2, the cutting property was good as in the example, and the cutting portion of the adhesive did not adhere again. However, since the peeling force of the adhesive layer 2 to the release paper 1 was too strong at 120 g / 25 mm,
The required character part has peeled off.

Although not shown as data, both the embodiment and comparative examples 1 and 2 are provided with the curl preventing resin layer 7, so that no curl or delamination due to the curl is observed in the adhesive marking film. Was. Further, in Examples in which the outer surface of the curl preventing resin layer 7 was roughened, no avatar-like gloss blur due to the presence of air was observed, but in Comparative Examples 1 and 2 where the surface was not roughened, the avatar-like gloss was not observed. Luster pots were seen.

[0040]

[Table 1]

[0041]

As described above, according to the present invention,
Release force of the pressure-sensitive adhesive layer to release paper is 10 to 100 g / 2
With the setting of 5mm, only unnecessary parts can be reliably and easily peeled off from the base material with an appropriate force without breaking or tearing the adhesive marking film, and scraps are removed quickly to further improve workability. Can be done.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an adhesive marking film.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Release paper 2 Adhesive layer 3 Design layer 4 Paper 5 Thin film resin layer 6 Release agent layer 7 Resin layer for curl prevention

Claims (5)

[Claims] 1. An adhesive marking film in which an adhesive layer is releasably laminated on release paper, and a design layer is laminated on the adhesive layer, wherein the adhesive force of the adhesive layer on the release paper is 10 to 100 g.
/ 25 mm, a pressure-sensitive adhesive marking film. 2. A release paper comprises paper, a thin film resin layer laminated on one surface of the paper, and a release agent layer laminated on the thin film resin layer and in releasable contact with the adhesive layer. The pressure-sensitive adhesive marking film according to claim 1, wherein 3. The pressure-sensitive adhesive marking film according to claim 2, wherein the thickness of the thin-film resin layer is set to 15 to 20 μm. 4. The adhesive marking film according to claim 2, wherein a curling prevention resin layer is laminated on the other surface of the paper. 5. The adhesive marking film according to claim 4, wherein the outer surface of the curl prevention resin layer is roughened.