JPH10305531A - Label and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label in which one layer of separator to be a most load in a cost is omitted and to provide a method for manufacturing such a label. SOLUTION: The label comprises a structure in which a transparent film 6 is laminated on a surface of a laminated sheet having a separator 1, a pressure sensitive adhesive layer 2, a base material sheet 3 and a print layer 4 at the layer 4 side via an ultraviolet curable adhesive layer 5. This is half-cut to match a pattern of the layer 4 to a unit labeled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label having a structure in which one layer of a separator, which is the most expensive in terms of cost, is omitted, and a method for producing the same.

[0002]

2. Description of the Related Art Labels manufactured by the process shown in FIG. 2 are widely used as labels to be attached to various products. This label is preferable in terms of quality.

That is, the separator (1 ') / adhesive layer (2')
A first laminated sheet having an appropriate print layer (4 ') provided on a substrate sheet of a laminated sheet having a layer structure composed of a / substrate sheet (3') is prepared (see (a) of FIG. 2). Separately, a second laminated sheet having a layer structure composed of the separator (8 ') / adhesive layer (7') / transparent film (6 ') is prepared (see (b) of FIG. 2). Then, after separating and removing the separator (8 ') from the second laminated sheet (see (c) of Fig. 2), the exposed surface of the pressure-sensitive adhesive layer (7') is printed on the printed layer (1) of the first laminated sheet. The target label is manufactured by pressing and attaching to the surface on the 4 ′) side (see (d) in FIG. 2).

If this label is subjected to half-cutting in accordance with the print layer (4 ') to form a unit label (see (e) in FIG. 2, (hc) is a half-cut line), the unit label is It can be attached to the object (see (f) of FIG. 2).

[0005]

The label manufactured by the method shown in FIG. 2 is widely used, but in addition to the separator (1 ') on the first laminated sheet, the label on the second laminated sheet is also used. Also has a separator (8 ') and the latter separator
Since (8 ') is discarded during the label manufacturing process, there is a great disadvantage that one layer of the most expensive separator among the materials used is wasted. Waste of one layer of separator is disadvantageous not only in cost but also in resource saving and waste disposal. In addition, since the separator (8 ') must be peeled off during the manufacturing process, there is a problem that the operation is complicated.

[0006] Under such a background, an object of the present invention is to provide a label in which one layer of the separator, which is the most burdensome in terms of cost, is omitted, and to provide a method for producing such a label. Things.

[0007]

The label of the present invention comprises a separator (1) / adhesive layer (2) / substrate sheet (3) / printing layer.
It has a structure in which a transparent film (6) is laminated on the surface of the laminated sheet made of (4) on the side of the printing layer (4) via an ultraviolet-curable adhesive layer (5).

The method for producing a label according to the present invention comprises the steps of:
An ultraviolet-curable adhesive composition is applied to the surface of the laminated sheet composed of (1) / adhesive layer (2) / base sheet (3) / printing layer (4) on the side of the printing layer (4), and the coating is performed. Transparent film from above layer
(6) is superposed, and the coating layer is cured by irradiating ultraviolet rays from the transparent film (6) side, thereby forming an ultraviolet-curable adhesive layer (5) on the surface of the laminated sheet on the printing layer (4) side.
Characterized in that a transparent film (6) is laminated through the substrate.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

In the present invention, first, the separator (1)
A laminated sheet consisting of / adhesive layer (2) / base sheet (3) / printing layer (4) is prepared.

As the separator (1), one obtained by treating one surface of a base material such as a polyester film, a polished paper, or an impregnated paper with a release agent such as a silicone release agent is suitably used.

Examples of the pressure-sensitive adhesive layer (2) include various pressure-sensitive adhesive layers including an acrylic pressure-sensitive adhesive and a rubber-based pressure-sensitive adhesive. The formation of the pressure-sensitive adhesive layer (2) can be carried out by coating with a solution or dispersion or by melt coating, depending on the type of the pressure-sensitive adhesive.

As the base sheet (3), paper (art paper,
Mirror coated paper, etc.), synthetic paper, polyester film,
Examples include a polypropylene film, a polyethylene film, and a polyvinyl chloride film.

Then, first, the separator (1) / adhesive layer
A laminated sheet having a layer structure of (2) / substrate sheet (3) is prepared, and printing is performed on the surface on the side of the substrate sheet (3) to form a printed layer (4). The printing may be partial printing or full printing (solid printing), and partial printing may be further performed on the entire printing surface. In addition, the printing may be monochromatic printing or multicolor printing. As a printing method, a flexographic printing method, a convex ring printing method, or a gravure printing method is suitably adopted, and in the case of full-surface printing, a coating method may be adopted. As the printing ink, various inks including an ultraviolet curable ink are used.

After producing a laminated sheet composed of the separator (1) / adhesive layer (2) / base sheet (3) / printing layer (4), the surface of the laminated sheet on the side of the printing layer (4) is formed. An ultraviolet-curable adhesive composition is applied, a transparent film (6) is overlaid on the applied layer, and ultraviolet rays are irradiated from the transparent film (6) side to cure the applied layer. As a result, the transparent film (6) is laminated on the surface of the laminated sheet on the side of the printing layer (4) via the ultraviolet-curable adhesive layer (5).

Examples of the transparent film (6) include transparent and strong films such as a biaxially oriented polyester film, a biaxially oriented polypropylene film, a non-oriented polypropylene film, a biaxially oriented nylon film, and an unoriented nylon film. It is preferably used.

At least the surface of the transparent film (6) on the side of the UV-curable adhesive layer (5) is previously subjected to a surface treatment such as a corona discharge treatment in order to secure an adhesive force with the UV-curable adhesive layer (5). Is preferably applied.

The UV-curable adhesive composition can be applied by coating or solid printing.

The hardening of the coating layer of the ultraviolet-curable adhesive composition through the transparent film (6) can be performed in a very short time of about a second.

After completion of the lamination, a unit label can be formed by half-cutting according to the pattern of the print layer (4).

The separator (1) is peeled off from the label thus obtained, and the unit label composed of the remaining layer is lightly pressed on the object, so that the unit label is stuck on the object with one touch. be able to.

<Operation> In the label of the present invention, the separator which is the most burdensome in terms of cost is omitted as compared with the conventional label, so that the cost and the manufacturing process are reduced. , Environmental issues (resource saving, waste reduction)
It is extremely advantageous. It is also advantageous in that it can be manufactured in-house using only commercially available materials.

[0023] More specifically about costs, availability price e.g. 130 yen (1 m ² per) of the pressure-sensitive adhesive layer for use in the manufacture of conventional labels (7 ') with a separator (8')
However, the transparent film used in the production of the label of the present invention
The acquisition price of (6) is about 20 yen (per 1 m ² ) for a biaxially oriented polypropylene film having a thickness of 20 μm or less, and the resin cost and processing for forming the ultraviolet-curable adhesive layer (5) The price difference is remarkable because it is only 30 to 40 yen including the cost.

[0024]

The present invention will be further described with reference to the following examples.

Embodiment 1 FIG. 1 is a process diagram showing a manufacturing process of a label of the present invention. However, the thickness of each layer is exaggerated.

A laminated sheet having a layer structure of separator (1) / adhesive layer (2) / base sheet (3) was prepared. Separator
(1) is made of paper having a basis weight of 70 g / m ² , one surface of which is glossy and the other surface of which is peeled with a silicone-based release agent. The pressure-sensitive adhesive layer (2) is composed of an acrylic pressure-sensitive adhesive layer having a thickness of 20 μm. The base sheet (3) has, for example, a basis weight of 73
It consists of g / m ² mirror coated paper.

A black and red pattern was printed on the base sheet (3) of the laminated sheet using an ultraviolet curable ink to form a print layer (4). This allows the separator
A laminated sheet composed of (1) / adhesive layer (2) / base sheet (3) / printing layer (4) was produced (see (a) in FIG. 1).

Next, a UV-curable adhesive composition of a urethane acrylate type is applied to the surface of the laminate sheet on the side of the print layer (4), and a 20 μm-thick tandem film as an example of the transparent film (6) is applied from above. An axially stretched polypropylene film (the lower surface of which had been subjected to corona discharge treatment) was covered, and then the transparent film (6) was irradiated with ultraviolet rays from the side thereof using a metal halide lamp. As a result, the ultraviolet-curable adhesive composition cures at a speed of 2 seconds to form an ultraviolet-curable adhesive layer (5) having a thickness of 4 to 5 μm, and the lamination of the transparent film (6) is completed. A label consisting of the agent layer (2) / base sheet (3) / printing layer (4) / ultraviolet curable adhesive layer (5) / transparent film (6) was obtained (see (b) in FIG. 1). .

The formation of the printing layer (4) on the base sheet (3) of the laminated sheet and the laminating operation of the transparent film (6) are continuously performed by using a printing apparatus and a laminating apparatus equipped with ultraviolet irradiation means. I went.

Then, this label was cut in half according to the pattern of the print layer (4) to enable unit labeling (see (c) in FIG. 1, where (hc) is a half cut line).

The obtained label was much lower in cost than the conventional label, and the printing quality was not inferior to the conventional product.

If the separator (1) is peeled off from this label and the unit label composed of the remaining layer is lightly pressed on the object, the unit label can be stuck on the object with one touch (FIG. 1). (D)).

Example 2 Polypropylene-based synthetic paper having a thickness of 80 μm (Yupo # 80E manufactured by Oji Yuka Co., Ltd.) was used as the base sheet (3).
M ”) and a transparent film (6) with a thickness of 20μ.
m, except that a biaxially oriented polypropylene film was used.
A label was manufactured in the same manner as in Example 1. The obtained label was excellent as in Example 1.

[0034]

As described in the section of operation, the label of the present invention has one layer of separator which is the most expensive in cost as compared with the conventional label. In addition, it is extremely advantageous from the viewpoint of the manufacturing process and environmental problems (resource saving and waste reduction). It is also advantageous in that it can be produced in-house using only commercially available materials, and is satisfactory in terms of quality.

[Brief description of the drawings]

FIG. 1 is a process chart showing a label manufacturing process of the present invention.

FIG. 2 is a process diagram showing a conventional label manufacturing process.

[Explanation of symbols]

 (1), (1 ') ... separator, (2), (2') ... adhesive layer, (3), (3 ') ... substrate sheet, (4), (4') ... print layer, ( 5) ... UV-curable adhesive layer, (6), (6 ') ... transparent film, (7') ... adhesive layer, (8 ') ... separator, (hc) ... half cut line

Claims (5)

[Claims] An ultraviolet-curable adhesive layer is provided on the surface of the laminated sheet comprising the separator (1) / adhesive layer (2) / base sheet (3) / printing layer (4) on the side of the printing layer (4). A label having a structure in which a transparent film (6) is laminated via (5). 2. The label according to claim 1, wherein half-cutting is performed in accordance with the pattern of the printing layer to enable unit labeling. 3. The label according to claim 2, wherein the separator (1) is peeled off and the unit label comprising the remaining layer is adhered on the object. 4. An ultraviolet-curable adhesive composition on the surface of the laminated sheet comprising the separator (1) / adhesive layer (2) / base sheet (3) / printing layer (4) on the side of the printing layer (4). Is applied, and a transparent film (6) is overlaid on the applied layer, and the applied film is cured by irradiating ultraviolet rays from the transparent film (6) side, thereby forming the printed sheet (4) side of the laminated sheet. A method for producing a label, comprising laminating a transparent film (6) on the surface via an ultraviolet-curable adhesive layer (5). 5. The method for producing a label according to claim 4, wherein unit labeling is enabled by half-cutting according to the pattern of the printing layer (4).