JPH11327440A - Pressure sensitive adhesive sticker for low light transmittance medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a low light transmittance medium pressure sensitive adhesive sticker improving visibility through a smoke glass and having a high sticking characteristic and high re-covering workability while holding durability similar to that of a conventional sticker of which whole surface is coated with adhesive. SOLUTION: The pressure sensitive adhesive sticker has a supporting layer A, a printing layer B formed at least on one surface of the layer A and an adhesive layer C formed on the printing layer side and is characterized by forming the layer C only on the periphery of the layer A. Although an optional adhesive agent can be used for the layer C, an acrylic group adhesive agent is preferably used. Both of an emultion type and a solvent type can be used, and in the case of using the solvent type, an adhesive application area can be narrowed. The adhesive is applied not to the whole surface of one face of the sticker but only to the periphery of a pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sticker for reflected light, and more particularly to a sticker to be attached to a train, a car, a shop window, or the like.

[0002]

2. Description of the Related Art Conventionally, various stickers have been used for decorating glass surfaces such as trains, automobiles, and shop windows. In recent years, double-sided design stickers which have a printing layer on both sides of a base material and an adhesive layer on one side thereof and can be viewed not only from the side to which the base material is attached but also from the glass side have been put to practical use. For example, the door glass of a commuter train has a sticker from the outside, a notice on the outside design is printed for passengers trying to get in, and a commercial advertisement for passengers already on the inside is printed on the inside. I have. However, in recent years, the use of low-light-transmitting glass that absorbs ultraviolet light and / or infrared light has been increasing in expectation of effects such as heat insulation and prevention of sunburn. If a sticker with a double-sided design is used for such smoked glass, it is difficult to visually recognize the design of the sticker through the glass. As a result, the effectiveness of commercial advertisements in vehicles has been diminished. Therefore, there has been a demand for a sticker that can be visually recognized even through low light transmittance glass and that prevents the effect of the advertisement from being reduced.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a pressure-sensitive adhesive sticker and a sticking method that can be practically viewed even through a low light transmittance glass.

[0004]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that visibility is significantly improved when a smooth air layer is provided between the medium and the sticker, and this situation is realized. As a means, they have found that a pressure-sensitive adhesive sticker having a partial pressure-sensitive adhesive layer only around the design solves the problem, and completed the present invention.

That is, the constitution of the present invention comprises a support layer (A),
It has a printing layer (B) applied to at least one surface and an adhesive layer (C) on the printing layer side, and the adhesive layer (C) is applied only around the support layer (A). A pressure-sensitive adhesive sticker for attaching a medium having a low light transmittance, which is characterized in that:

The present invention also provides a pressure-sensitive adhesive sticker wherein the low light transmittance medium is smoke glass;
The low light transmittance medium is a pressure-sensitive adhesive sticker, which is a smoke glass for a train or an automobile.

Further, the present invention comprises a support layer (A), a print layer (B) provided on at least one surface, and an adhesive layer (C) on the print layer side. C) A method of attaching a sticker applied only around the support layer (A) to a low light transmittance medium, characterized by having a smooth air layer between the medium surface and the sticker surface. And a method for attaching a pressure-sensitive adhesive sticker for attaching a medium having a low light transmittance.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The support layer (A) is required to have characteristics such as surface hardness, weather resistance, light-shielding property, and suitability for printing on the back surface, and synthetic paper having high light-shielding properties is used. Conceal Yupo (Oji Yuka Co., Ltd.) is particularly preferably used. Lamination processing may be performed to further increase the weather resistance of the surface. The printed surface on the back side can be subjected to surface processing in consideration of removability. The thickness of the layer varies slightly depending on the size of the finish,
When the thickness is larger than 200 microns, the flexibility is inferior. When the thickness is less than 100 microns, the rigidity at the time of the attaching operation is not sufficient. The surface shape of the layer may be a glossy surface or a matte surface.

The printing layer (B) is not particularly limited. In the case of a train or the like, it is necessary to stick it on the outside of the car, compared to the case of sticking it on the indoor side, such as a show window, and the outside printing layer is particularly required to have weather resistance. . Printing methods such as offset and screen are possible.

The pressure-sensitive adhesive layer (C) may be any pressure-sensitive adhesive, and is preferably an acrylic pressure-sensitive adhesive. Either an emulsion type or a solvent type can be used, but in the case of a solvent type, the pressure-sensitive adhesive applied surface can be narrowed. Apply the adhesive only around the design, not the entire surface of one side of the sticker.

Before applying the pressure-sensitive adhesive, a protective layer may be provided on each printing layer. As the protective layer, a PVC film is particularly preferably used in order to enhance the removability of the adhesive.

As the low light transmittance medium applicable to the present invention, any smoke glass is used. A transmissive medium other than a glass material such as a light-shielding acrylic plate is also used.
It is particularly suitably used for smoke glass for trains, automobiles, etc., and smoke glass for convenience stores and the like.

[0013]

EXAMPLES (Example 1) The thickness of the support layer (A) was 19
On a 5 μm concealed YUPO (manufactured by Oji Yuka Co., Ltd.), a layer having an ink thickness of 2 to 3 μm based on a white background was obtained as a printing layer (B) by offset printing. Then, a thickness of 20 μm
Dry lamination of PVC film, and paste the emulsion type acrylic adhesive about 10mm around the pattern
To give a thickness after drying of 20 μm to prepare a sticker (1).

Comparative Example 1 A comparative sticker (1) was prepared in the same manner as in Example 1 except that an emulsion type acrylic pressure-sensitive adhesive was applied to the entire back surface.

Example 2 The thickness of the support layer (A) was 1
On a 95 μm concealed Yupo (manufactured by Oji Yuka Co., Ltd.), a layer having a pattern ink thickness of 2 to 3 μm based on color printing by offset printing was obtained as a printing layer (B). Then, thickness 2
A 0 μm PVC film is dry-laminated and applied, and an emulsion-type acrylic pressure-sensitive adhesive
A sticker (2) was prepared so as to have a width of 0 mm and a thickness of 20 μm after drying.

(Comparative Example 2) A comparative sticker (2) was prepared in the same manner as in Example 2 except that an emulsion-type acrylic pressure-sensitive adhesive was applied to the entire back surface.

Example 3 Example 1 was the same as Example 1 except that a solvent-type acrylic pressure-sensitive adhesive was used instead of the emulsion type, and the portion to which the pressure-sensitive adhesive was applied was changed to a width of about 5 mm around the design. Similarly, a sticker (3) was prepared.

Comparative Example 3 A comparative sticker (3) was prepared in the same manner as in Example 2 except that the solvent type acrylic pressure-sensitive adhesive was applied to the entire back surface.

The stickers obtained in Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to the following evaluation tests. The evaluation test method is shown below. Table 1 shows the test results.

(Visibility through smoked glass-1)
Low light transmittance glass (visible light transmittance 47%, color gray)
The stickers prepared as Examples and Comparative Examples were affixed to the outside of the door glass of the train using the, and the stickers were visually observed at a point 2 m from the glass surface. When the color of the pattern is sufficiently recognizable (○), when it is insufficient (×)
It was determined.

(Visibility through smoked glass-2)
The stickers prepared as Examples and Comparative Examples were attached to the inner surface of the smoked glass of the convenience store, and the stickers were visually observed in the daylight under sunlight at a point 10 m from the glass surface on the outside. A case where the color of the pattern was sufficiently recognizable was determined as (○), and a case where the color was insufficient was determined as (x).

(Washing Durability) After a test of visibility -1 through smoked glass, the appearance of peeling after washing by a normal train washing method was visually observed. The case where continuous use was possible was evaluated as (○), and the case where peeling of the edge was observed was evaluated as (x).

(Attachment Characteristics) The ease of attachment when attached to a glass surface was visually observed. A case where the pattern was smooth and the pattern could be recognized as it was was determined as (○), and a case where the pattern became dark and the color changed was determined as (x).

(Replacement workability) The ease of the peeling work from the glass surface was visually observed. The case where no special arm force was required and the adhesive could be easily peeled off without adhesive residue was judged as (○), and the case where there was adhesive residue at the time of peeling was judged as (x).

[0025]

[Table 1]

As can be seen from the test results, even if the same base material and the same pattern are used, the sticker provided with the adhesive on the entire surface, whereas the sticker provided with the adhesive only on the periphery, that is, between the glass and the sticker printing layer It can be seen that the sticker according to the present invention having a smooth air layer has a remarkable effect on visibility through smoked glass. In particular, the use of a solvent-type pressure-sensitive adhesive can narrow the pressure-sensitive adhesive applied portion, and has an effect of minimizing the effect of the pressure-sensitive adhesive applied portion on the design.

[0027]

According to the present invention, the sticker has the same durability as a conventional sticker having an adhesive on the entire surface, has excellent visibility through smoked glass, and has sticking characteristics and removability. , A pressure-sensitive adhesive sticker for a medium having a low light transmittance can be obtained.

Claims (4)

[Claims] 1. A support layer (A), a print layer (B) provided on at least one surface of the support layer (A), and an adhesive layer (C) on the print layer side. A pressure-sensitive adhesive sticker for affixing a low light transmittance medium, wherein the agent layer (C) is applied only around the support layer (A). 2. The pressure-sensitive adhesive sticker according to claim 1, wherein the low light transmittance medium is smoke glass. 3. The sticker according to claim 1, wherein the low light transmittance medium is smoke glass for a train or an automobile. 4. A support layer (A), a print layer (B) applied on at least one surface, and an adhesive layer (C) on the print layer side.
Wherein the pressure-sensitive adhesive layer (C) is applied to a low light transmittance medium with a sticker applied only around the support layer (A), wherein a smooth surface is provided between the medium surface and the sticker surface. A method for attaching a pressure-sensitive adhesive sticker for attaching a medium having a low light transmittance, comprising an air layer.