JPH0830197A - See-through sticker and its production - Google Patents

Abstract

PURPOSE:To provide a sticker which makes the inner side hardly visible from the outer side, is capable of making bright characters and patterns visible and makes the outer side visible well from the inner side so as not to hinder driving when the sticker is stuck on the windshields of an automobile. CONSTITUTION:This sticker is formed by forming a film which is a polyvinyl chloride (or polyester) colored to have a hiding property as a rear surface material 1, subjecting the surface thereof to pattern printing 2 with ink of different color tones to form characters and patterns thereon, laminating a film 4 of a transparent polyester (or polypropylene, polyamide) coated with an adhesive 3 for dry lamination thereon, then forming many through-holes 7 over the entire part, applying a tacky adhesive 5 on the front surface and pressing a release film 6 thereon.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a see-through sticker, and more particularly to a sticker to be used by sticking it on the window of an automobile.

[0002]

2. Description of the Related Art In order to make it difficult to see the inside of a building but the inside of the building, it is necessary to coat a reflective material on one side of a base sheet and to provide a large number of through holes. 86
No. 049) or a synthetic resin sheet having a dark inner layer and aluminum foil or the like laminated to form a large number of through holes (Actual No. 54-93).
No. 255) is known.

In a light-shielding sheet capable of seeing through a large number of through-holes, it is natural that the larger the area ratio of the through-holes is, the higher the transparency is. However, there are a lot of people who want high transparency from the inside to the outside and low transparency from the opposite side to the inside. To meet this desire, there is a proposal that the relationship between the hole diameter of the through holes and the pitch should be selected in the range of 0.8 to 2.0 mm to form the holes in an orderly manner (JP-A-55-57802).
As a means for attaching the light-shielding sheet to the window, a double-sided adhesive tape is only taught to be attached to the edge. However, such a sticking method is not suitable for sticking to the window of an automobile, and a double-sided adhesive tape is generally not preferable because the adhesive tends to remain when peeled off.

[0004] Stickers attached to the windows of automobiles are mainly used for advertisements and some kind of display. Therefore, the patterns on the outside are a problem, and they are required to be clear and eye-catching. , There is often no need for a picture on the inside. Moreover, it is often desirable that the inside is not very visible from the outside, but it is not allowed to be invisible. In addition, it must not reflect light, must adhere to the entire surface of the window, have high weather resistance, and be easy to replace.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to make a sticker whose main purpose is to harmonize the above-mentioned requirements and to stick it on the window of an automobile, but the inside cannot be seen very well from the outside. It is not invisible, the outside is well visible from the inside, and the outside is not light reflective, but it can also show a clear and impressive pattern, adheres well to the wind, and has high weather resistance. It is to provide a sticker that can be easily replaced, and to provide a manufacturing method thereof.

[0006]

As shown in FIGS. 1 and 2, the see-through sticker of the present invention comprises a backing material 1 and a backing material made of a polyvinyl chloride or polyester film colored so as to have hiding power. A printing layer for characters and patterns by pattern printing 2 of an ink of a color different from that of the material, an adhesive layer 3, a surface material 4 made of a transparent polyester, polypropylene or polyamide film, an adhesive layer 5 and a release film 6 are provided. A transparent sticker that is laminated in this order and has a large number of through holes 7 penetrating at least each of the back surface material 1, the pattern printing 2, the adhesive layer 3 and the surface material 4, and is used by being stuck on a transparent sheet-like body Is.

In this sticker manufacturing method, a pattern printing 2 of an ink having a color tone different from that of the back material is applied to one surface of the back material 1 made of a polyvinyl chloride or polyester film colored so as to have hiding power. A letter or a pattern is provided, and a polyester, polypropylene or polyamide film coated with an adhesive for dry lamination is laminated on it, and a large number of through holes 7 are provided on the whole, and an adhesive 5 is applied on it to separate the holes. It consists of applying a mold film 6.

The term "color tone different from that of the backing material" includes those having different colors, those having different brightness and darkness, and those having different both. In a typical example, a beige-colored polyvinyl chloride film is used as the backing material 1, letters and patterns obtained by pattern printing are printed with a dark brown ink, and a transparent polyester film is used as the surface material. It is a thing.

Since the ink used for printing is required to have weather resistance, it is preferable to use a vinyl chloride vinyl acetate copolymer resin or an acrylic resin-based binder to which a solid pigment, mainly a colorless pigment, is added.

The large number of through holes 7 are provided by means such as a punch press. The size and arrangement of the through holes are arbitrary. For example, circular holes having an appropriate diameter may be regularly arranged according to the known technique described above. It is preferable to use a large number of small-diameter ones because it does not spoil the design and is easy to see through.
The area ratio of the through holes is appropriately in the range of 10 to 50%, and preferably in the range of 25 to 40%, in view of the balance between the transparency and the light shielding property.

A pressure-sensitive adhesive or adhesive can be optionally selected, but a preferred example is a water-based acrylic emulsion type pressure-sensitive adhesive. This type of adhesive has the advantage that it can be easily applied to the sticker material after punching so that it does not protrude into the hole, the sticker is easy to stick, and does not remain after peeling.

If the sticker is to be attached to the upper part of the rear window of an automobile, for example, it often has a curved ring portion conforming to the shape of the window frame. In that case, the release film is applied to the die. It may be punched.

The release film 6 may be a regular release paper obtained by coating a polyolefin resin on paper, but a transparent film is preferable because characters and patterns can be seen before the release film is peeled off. A highly transparent polypropylene film or polyester film is suitable.

[0014]

[Function] Pattern printing is performed between the colored backing material having a concealing property and the transparent surface material in a color tone different from that of the backing material,
By forming letters and patterns, with a minimum layer structure, a transparent sticker can be obtained in which the letters and patterns clearly marked from the outside can be seen and the monochrome surface can be seen from the inside. Since the printing layer is sandwiched between the two plastic films, the perforation does not impair the printing.

When polyvinyl chloride is used as the backing material 1, coloring with a concealing property can be easily carried out and pattern printing can be easily carried out. However, an adhesive for laminating the surface material is used.
It is difficult to apply by coating. This is because, as is well known, polyvinyl chloride does not have high solvent resistance. Transfer may be applied to the adhesive on the polyvinyl chloride. However, it goes without saying that application of an adhesive by transfer is costly and disadvantageous.

Therefore, in the present invention, the above problem is solved by selecting a film of polyester, polypropylene or polyamide as a surface material, applying an adhesive for dry lamination to the surface thereof, and laminating the film.
The surface materials selected from the above plastics are also convenient for the selection of adhesive materials. As mentioned above, the preferred adhesive is an aqueous acrylic emulsion type, but since this type of adhesive contains alcohol and polyvinyl chloride has poor alcohol resistance, it should be applied directly on it. Is not preferable. Since polyester, polypropylene, and polyamide are materials having relatively high rigidity, the sticker itself becomes stiff by using these films as the surface material, and can be easily attached or replaced.

In using the sticker of the present invention, needless to say, the release film 6 is peeled off to expose the surface of the adhesive or pressure-sensitive adhesive, and this is attached to the window. The inside of the sticker on the window looks good from the outside, but the inside does not look so good from the outside, and since the outside is not reflective, the inside may be dark and the outside tends to be light. If the outside is colored brightly, a person who sees from the outside receives a relatively large amount of light, so the light coming out from the inside through the through hole becomes relatively weak, and the area ratio of the through hole is high. Even if you select it, you can hardly see the inside. The light-colored backing material acts like this as a background for letters and pictures. On the other hand, as for the inside, it was found that the inside of the automobile is darker than the outside, so that the above purpose can be achieved even if the inside is not particularly darkened. For this reason, the area ratio of the through holes can be made high, and thus the transparency for seeing the outside from the inside can be enhanced.

On the outside of this sticker, letters and pictures are marked on the back which is colored with concealment with ink of a color tone different from this, and by selecting the area ratio of the through holes to an appropriate range, It can be an eye-catching design and can reach the purpose of using stickers. The inside has a single color, which creates a soft atmosphere.

[0019]

EXAMPLE A beige colored polyvinyl chloride film having a thickness of 75 μm was used as a base material, and pattern printing was performed on it using a brown ink having a vinyl chloride-vinyl acetate copolymer resin as a binder. On the other hand, an adhesive for dry lamination was applied to a film of polyester (polyethylene terephthalate) having a thickness of 25 μm, and this was laminated on the printed polyvinyl chloride film and heated and pressed to form a laminate. Subsequently, through holes were formed by staggering circular holes with a diameter of 1.0 mm by a punch press (area ratio of through holes: 38
%).

An aqueous acrylic emulsion type pressure-sensitive adhesive was applied onto a polyester film, and a highly transparent polypropylene film was applied as a release film. According to the shape of the upper part of the rear window frame of the car to be pasted, this material is punched into a slender sea cucumber shape with a gently curved upper edge, a straight lower edge, and the left and right edges. A transparent sticker of the present invention was obtained.

[0021]

When the transparent sticker of the present invention is used by being attached to the window of an automobile, when viewed from the outside, the inside cannot be seen so much, and letters and pictures look impressive. Since the printing is sandwiched between the back surface material and the front material, the characters and patterns are kept beautiful without being damaged by the perforation. From the inside, the outside is relatively visible and does not hinder driving. By properly selecting the adhesive, it is easy to attach and replace, and the adhesive does not remain on the glass.

[Brief description of drawings]

FIG. 1 shows a layer structure of a see-through sticker of the present invention,
Sectional drawing which showed typically.

FIG. 2 is a plan view showing the side of the sticker shown in FIG. 1 that faces away with the release paper removed.

[Explanation of symbols]

 1 Back Material 2 Pattern Print Layer 3 Adhesive Layer 4 Surface Material 5 Adhesive Layer 6 Release Film 7 Through Hole

Claims (6)

[Claims] 1. A backing material 1 made of a polyvinyl chloride or polyester film colored so as to have hiding power,
Printed layer of letters and patterns by pattern printing 2 of ink of different color from the backing material, adhesive layer 3, transparent polyester,
A surface material 4 made of a polypropylene or polyamide film, an adhesive layer 5 and a release film 6 are laminated in this order, and at least a back surface material 1 and pattern printing 2,
A large number of through holes 7 are formed through each layer of the adhesive layer 3 and the surface material 4.
A transparent sticker for use by being attached to a transparent sheet-like body. 2. The backing material 1 is a beige-colored polyvinyl chloride film, the printing of characters and patterns by the pattern printing 4 uses a brown-colored ink, and the surface material is a transparent polyester film. The sticker of claim 1. 3. The sticker according to claim 1, wherein the area ratio of the through holes is 10 to 50%, preferably 25 to 40%. 4. The sticker according to claim 1, wherein a transparent film is used as the release film. 5. The sticker according to claim 1, which is to be attached to a window of an automobile. 6. A character or a pattern is provided on one surface of a backing material 1 made of a polyvinyl chloride or polyester film colored so as to have a concealing property by pattern printing 2 of an ink having a color tone different from that of the backing material, A polyester, polypropylene or polyamide film coated with an adhesive for dry laminating is laminated thereon, a large number of through holes 7 are provided on the whole, and an adhesive 5 is applied thereon and a release film 6 is applied. A method for producing a transparent sticker, which is used by being attached to a transparent sheet-like body.