JP2001318606A - Sticker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sticker having satisfactory concealing property by eliminating troublesome white solid printing. SOLUTION: The sticker can be seen from both the front and the rear surfaces by sticking the sticker to a transparent body to be stuck. The sticker is formed by laminating a white coat tack sheet on the rear surface of a transparent film 2 on which a back print 3 is carried out. The white coat tack sheet 5 has a white opaque tacky adhesive layer 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sticker,
In particular, the present invention relates to a sticker (printed sheet) that can be attached to a transparent adherend such as glass so that both sides can be seen.

[0002]

2. Description of the Related Art A conventional sticker 40 of this type is, as shown in a use state diagram of FIG.
It is used by being attached to a transparent adhered (plate) body 41 made of glass, plastic, or the like such as an automobile or a partition from the inside 46 side. That is, the conventional sticker 40 is, for example, a transparent film 42
The back printing 43 is applied to the back side of the substrate 41 with the transparent adhesive 44 from the indoor side (inside 46 side) of the adhered (plate) body 41,
Have been used.

[0003]

However, in the conventional sticker 40 as shown in FIG. 7, when viewed from the outside 45, the back print 43 looks correct as shown in FIG. When viewed from above, it looks opposite as shown in FIG.

Therefore, conventionally, the sticker 40 shown in FIG.
In the configuration shown in FIG. 8B, the so-called “white solid printing” in which white ink is solid-coated on the back print 43 is performed.
It has been trying to conceal that characters, figures, etc. appear to be reversed. However, even in such “white solid printing”, the concealing property is insufficient, and when strong sun rays or the like enter from the outside 45, inverted characters (inverted figures) and the like from the inside 46 (through). There was a problem of seeing. Furthermore, if the "white solid printing" is performed by offset printing, only a thickness of about several [mu] m / time can be printed, so that it is necessary to print over and over a plurality of times, which is troublesome.

[0005]

According to the present invention, there is provided a sticker which is attached to a transparent adherend and which can be seen from both front and back sides, and a white opaque adhesive layer is provided on the back surface (print surface) of the back-printed transparent film. The white opaque pressure-sensitive adhesive layer is in contact with the white coat tack sheet having In addition, with a sticker that can be attached to a transparent adherend and seen from both sides, a transparent film with back printing is provided,
Further, a white coat tack sheet composed of a white opaque adhesive layer, an aluminum vapor-deposited layer, a PET film, and a white coat layer is laminated on the back surface (printed surface) of the transparent film via the white opaque adhesive layer. . Further, a transparent adhesive layer to be attached to a transparent adherend is laminated on the front surface of the transparent film.

[0006] In addition, normal printing is performed on the back surface of the white coat tack sheet. Preferably, the white opaque adhesive layer,
The adhesive is made by mixing titanium oxide as a white pigment.
The white opaque pressure-sensitive adhesive layer was formed by mixing 0.2 parts by weight to 40 parts by weight of titanium oxide as a white pigment with respect to 100 parts by weight of the pressure-sensitive adhesive, and the thickness was set to 5 μm to 50 μm.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on the illustrated embodiments.

FIG. 1 is an enlarged sectional view of an essential part of a sticker attached to a transparent adherend and viewed from both sides.
Is a transparent film having a back print 3 applied to the back surface, and is formed by laminating a white coat tack sheet 5 having a white opaque adhesive layer 4 on the back surface of the transparent film 2. That is, the white opaque pressure-sensitive adhesive layer 4 is brought into contact with the back printing 3 side of the transparent film 2 to laminate and integrate the white coat tack sheet 5. In the present invention, “opaque” of the white opaque pressure-sensitive adhesive layer 4 is defined to mean a visible light transmittance of 50% or less.

The white-coated tack sheet 5 includes, for example, a white opaque adhesive layer 4, an aluminum deposition layer 6, a PET film 7,
It consists of a white coat layer 8. In the production, a PET film 7 is mainly used, an aluminum vapor-deposited layer 6 and a white coat layer 8 are laminated, and a white opaque adhesive layer 4 is further formed on the aluminum vapor-deposited layer 6.
It is good to laminate on top. In particular, the white-coated tack sheet 5 can be manufactured as a wide and long roll-shaped sheet body, can efficiently apply (laminate) the white opaque pressure-sensitive adhesive layer 4, and have the conventional white solid tack layer. For example, compared to printing with offset printing,
It is also possible to apply a thick coating of 10 μm to 30 μm.

Then, back printing 3 (as shown in FIG. 1)
Processing (lamination) of a roll-shaped (described above) white coat tack sheet 5 on a sheet-shaped transparent film 2 subjected to
Then, the sheet may be cut into sheets of a desired size. In the case of FIG. 1, a transparent adhesive may be used separately or a transparent cellophane tape may be used to attach the transparent adherend.

Next, FIG. 2 shows another embodiment, in which a transparent adhesive layer 9 for sticking to a transparent adherend (as apparent from comparison with FIG. It is laminated on the front side of, making it easy to use. In addition, as shown by the two-dot chain line, it is preferable that the release paper 10 is laminated on the front surface of the transparent adhesive layer 9. Other configurations are denoted by the same reference numerals as those in FIG.

Next, FIG. 3 shows another embodiment, in which a normal print 11 is applied to the back surface of the white coat tack sheet 5 (as apparent from comparison with FIG. 1). In other words, normal characters, figures, and symbols can be seen in the normal printing 11 in a state where the normal printing 11 is attached to a transparent adherend (not shown) from the room (inside) and used. Then, the back print 3 is sufficiently shielded by the white opaque layer 4 (having a sufficient thickness) of the white coat tack sheet 5 and the aluminum vapor deposition layer 6 and the white coat layer 8, so that the room (inside) From the ──back side───
Only the regular print 11 will be beautifully visible.

By the way, as a modified example of FIG. 3, a transparent adhesive layer 9 as shown in FIG. 2 is laminated on the front surface of the transparent film 2 (not shown), Laminating the paper 10 is optional.

In the embodiment described above with reference to FIGS. 1 to 3, the white opaque pressure-sensitive adhesive layer 4 is desirably formed by mixing titanium oxide as a white pigment with a pressure-sensitive adhesive. "White glue" to which a titanium oxide powder or a titanium oxide resin solution is added.

Specifically, for 100 parts by weight of the adhesive,
It is formed by mixing (mixing) 0.2 to 40 parts by weight of titanium oxide as a white pigment. When the proportion of titanium oxide is less than the lower limit, the concealing property is reduced, and there is a possibility that the back print 3 can be seen from the back side (inside of the room) or the color of aluminum deposition can be seen from the front side. Conversely, when the value exceeds the upper limit, the adhesive strength is reduced, and the transparent film 2 may be peeled off.

In the embodiment of FIGS. 1 to 3 described above,
This is a configuration in which “white solid printing” is omitted altogether, and is provided with a white opaque adhesive 4 instead.
6 is a comparative example, which is provided with "white solid printing 12",
And a white coat tack sheet 15 having a normal adhesive layer 13
It has. 4 is a comparative example corresponding to FIG. 1, FIG. 5 is a comparative example corresponding to FIG. 2, and FIG. 6 is a comparative example corresponding to FIG. 3, and the same reference numerals indicate the same configuration. The description is omitted.

In this comparative example (FIGS. 4, 5 and 6), the solid white printing 12 must be performed in a sheet-by-sheet state, which is inefficient and has a sufficient concealing property in the case of offset printing. However, there is a disadvantage that two or more printing steps are required in order to obtain the ink, and the efficiency is further reduced. For silk printing, solid printing
Although 12 can be performed once, there is a problem with the compatibility of the inks, and there is also a problem that it takes time to change the printing method. However, by performing “white solid printing 12” to a sufficient thickness and laminating the white coat tack sheet 15, it is possible to secure the concealing property.

[0018]

According to the present invention, the following significant effects can be obtained by the above-described structure.

The white opaque pressure-sensitive adhesive layer (according to claims 1, 2, 3, and 4) can be applied efficiently in a wide roll sheet-like manufacturing process of a white coat tack sheet. By laminating with a transparent film on which a sheet has been back-printed, it can be efficiently manufactured as a whole. Moreover, the white opaque adhesive layer can be easily applied to a sufficient thickness, and a beautiful sticker can be obtained. In particular, the conventional 2
"White solid printing" beyond the process is completely unnecessary.

It is convenient in use (according to claim 3). (According to claim 4) From the back surface / inside of the room, the back print 3 is completely invisible, and the beautiful normal print 11 can be seen. (According to claim 5) It is excellent in concealing property, good in compatibility with an adhesive, and also excellent in weather resistance. (According to claim 6) necessary and sufficient hiding power and adhesive strength can be exhibited. In addition, the white opaque pressure-sensitive adhesive layer 4 can be efficiently laminated with a single application.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing another embodiment.

FIG. 3 is an enlarged sectional view showing another embodiment.

FIG. 4 is an enlarged sectional view showing a comparative example corresponding to FIG.

FIG. 5 is an enlarged sectional view showing a comparative example corresponding to FIG.

FIG. 6 is an enlarged sectional view showing a comparative example corresponding to FIG.

FIG. 7 is an enlarged sectional view showing a conventional example in a use state.

FIG. 8 is a diagram illustrating a problem of a conventional example.

[Description of Signs] 2 Transparent film 3 Back printing 4 White opaque adhesive layer 5 White coat tack sheet 6 Aluminum vapor deposition layer 7 PET film 8 White coat layer 9 Transparent adhesive layer 10 Release paper 11 Normal printing 12 White solid printing 13 Transparent adhesive layer

 ──────────────────────────────────────────────────の Continued on the front page F-term (reference) 4F100 AA21D AB10B AK01A AK42C AR00D AR00E BA04 BA05 BA07 BA10A BA10D BA10E CA13D EH66B GB90 HB31A HB31D JL10D JL11 JL13D JL13E JN01A JN01 J0204 J06

Claims (6)

[Claims] 1. A white coated tack sheet having a white opaque pressure-sensitive adhesive layer on the back surface of a transparent film subjected to back printing, wherein the white opaque pressure-sensitive adhesive film is adhered on a transparent adherend and viewed from both sides. A sticker characterized in that layers are abutted and laminated. 2. A sticker attached to a transparent adherend and viewed from both front and back sides, comprising a back-printed transparent film, and a back surface (printing surface) of the transparent film.
And a white coated tack sheet comprising a white opaque adhesive layer, an aluminum vapor-deposited layer, a PET film, and a white coat layer, laminated via the white opaque adhesive layer. 3. A sticker attached to a transparent adherend and viewed from both front and back sides, comprising a transparent film subjected to back printing, and a back surface (printing surface) of the transparent film.
Then, a white coat tack sheet composed of a white opaque adhesive layer, an aluminum vapor deposition layer, a PET film, and a white coat layer is laminated via the white opaque adhesive layer, and a transparent sheet is attached to the transparent adherend. A sticker comprising an adhesive layer laminated on the front surface of the transparent film. 4. The sticker according to claim 1, wherein normal printing is performed on the back surface of the white coat tack sheet. 5. The sticker according to claim 1, wherein the white opaque pressure-sensitive adhesive layer comprises a pressure-sensitive adhesive mixed with titanium oxide as a white pigment. 6. The white opaque pressure-sensitive adhesive layer is formed by mixing 0.2 to 40 parts by weight of titanium oxide as a white pigment with respect to 100 parts by weight of the pressure-sensitive adhesive, and has a thickness of 5 to 50 μm. , 2, 3 or 4.