JPH0497272A - Label - Google Patents

Abstract

PURPOSE:To obtain a high-grade label with metallic appearance by providing a rugged pattern on a metal evaporated surface having a printed pattern of the label which is attached to the bulge of a bottle simultaneously as the bottle is molded. CONSTITUTION:The metal evaporated layer 3 consisting of aluminum, etc., is molded on the surface of a base material 2 consisting of paper or plastic film, etc., and a pattern 4 is printed on the layer 3, then an adhesive layer 5 which can closely contact with the plastic bottle is applied and stuck to the back surface side of the base material 2. Next, the obtained substance is made to pass between a thermal embossing roll 11 and a nip roll 12 to perform embossment 6 on the evaporated surface having the pattern 4. Then, it is integrated with the outer surface of the bottle which is molded after blanking in a specified shape, so that the bottle with a label 20 is molded. Thus, the metallic appearance is given to the label, and the high-grade label which can follow the grain pattern of the bottle is obtained.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention relates to a label for use on bottles made of synthetic resin, and is particularly suitable for use in blow (including stretch flow) molding for bottles made of synthetic resin such as polyethylene, polypropylene, and polyester. At the same time, it is suitable for integrally bonding to the outer surface of the bottle body, etc.
It also relates to a label that gives a sense of luxury.

<Prior Art> Conventionally, bottles made of blow-molded synthetic resin have been used as containers for storing various contents because they protect the contents and are easy to handle. The contents are usually displayed on the outside of the bottle.

A label with a printed layer for displaying the product name is attached after the bottle is molded. However, attaching the label after the bottle is formed requires a separate process, which is inefficient.

In addition, because a step inevitably forms at the interface between the bottle surface and the label, the edge of the label or the entire label may peel off during transportation, storage, or other handling, reducing the product's value or making it unusable as a defective product. There's a problem.

Therefore, a method to solve this problem is to insert a label into the blow molding mold in advance and apply the label to the outer surface of the bottle body at the same time as the bottle is blow molded (hereinafter referred to as an in-mold label system). be. This in-mold label system has many advantages such as streamlining the process, making the appearance of the molded bottle more cosmetic, and reducing the cost of materials, and its practical use is likely to increase in the future.

In general, the method of forming bottles using an in-mold label system is to continuously extrude a parison from an extruder, cut it into a certain length, and set it in a mold with a label inserted into the inside of the mold. Either by blowing and integrating the label with the outer surface of the bottle to be molded, or by injection molding a preform of polyester or other material and controlling the temperature,
The label is inserted into a mold into which a label has been previously inserted into the inner surface, and then stretched and flowed, so that the label is integrated with the outer surface of the bottle being molded.

Labels used in this in-molded label are generally made of a sapphire or plastic film coated with a heat-sensitive adhesive.

In addition, labels with a metal vapor-deposited layer formed on the surface of paper or plastic film have come to be used to give a sense of luxury. However, even if a label on which a metal vapor deposition layer is formed is used in the above-mentioned in-mold label system, for example, if the plastic bottle has a grain pattern on its surface, there may be a lack of synchronicity between the bottle and the label, or the surface of the label may be uneven. Since it is smooth, it has the problem of being slippery and difficult to hold.

<Problems to be Solved by the Invention> The present invention was devised in order to solve the problems of the prior art described above, and provides a label that gives a metallic appearance and a luxurious feel that can be matched with the grain pattern of the bottle. The challenge is to provide.

<Means for Solving the Problems> The present invention solves the above problems, and at the same time as the bottle is formed, it is attached to the body of the bottle, a metal vapor deposition layer is provided on the surface of the base material, and The present invention provides a label characterized in that a printed pattern layer is provided on the base material, an adhesive layer that can adhere to the bottle is provided on the back side of the base material, and an uneven pattern is provided on the vapor deposition surface having the printed pattern.

<Function> The present invention has the above-described structure, and the label can be integrated at the same time as the bottle is molded, making it possible to obtain a bottle with a label that has a high-quality metallic feel.

<Example> Hereinafter, the present invention will be explained in detail based on the drawings.

First, FIG. 1 is a cross-sectional view of the label (1) of this example, in which metal vapor deposition N (3) made of aluminum or the like is applied to the surface of the base material (2) made of paper, plastic film, etc. by a normal method. A pattern (4) is printed on the metal vapor deposited layer (3).

Next, on the back side of the base material (2), an adhesive layer (5) that can be adhered to the plastic bottle is coated or bonded to create a label material (l 2 O).

Next, as shown in FIG. 2, this label material (10) is
Emboss (6) is applied to the vapor deposition surface having the pattern (4) by passing it between a hot embossing roll (11) and nisoprol (12). Here, the embossing conditions include a nip temperature of 40°C.
1 pressure of 100 kg/cm" is preferable.

When the embossed label material thus obtained is punched into a predetermined shape, a label (1) as shown in FIG. 1 is obtained.

Here, the embossed parts (6), (6), etc. stand out.

Next, the method of molding using this label (2) is to insert this label into a mold that is inserted into a mold, continuously extrude the parison from an extruder, and extrude it to a certain length. The labeled bottle (20) as shown in FIG. 3 is obtained by cutting and blowing the label into an integral part of the outer surface of the bottle to be molded. When directly blow molding polyethylene, etc., the mold temperature is 40°C or less, and when biaxially stretch blow molding polyester, the mold temperature is 80°C.
By adjusting the mold temperature as follows, it is possible to prevent the emboss from collapsing during blow molding.

<Effects of the Invention> The present invention has the above configuration and has the following excellent effects not found in conventional labels.

■We can provide labels that can express vapor deposition patterns that cannot be found in printing.

■We can provide labels that express the metallic feel of a subdued paper quality, which is different from labels using aluminum foil.

■It has a rough texture and is non-slip and easy to hold, so it can be used as a label for bottles used for drinking water.

It is possible to provide a label that can freely express the degree of embossing that can be synchronized with a plastic bottle with a surface grain pattern.

- When synthetic paper or plastic bottle material is used as the base material, it is possible to provide a label in which the embossed appearance of the label and the unevenness of the bottle can be synchronized.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an embodiment of the present invention, Fig. 2 is an explanatory view when manufacturing the label of the present invention, and Fig. 3 is a perspective view showing an example of a bottle to which the label of the present invention is adhered. be. (1)... Label (2)... Base material (3)... Evaporated layer (4)... Pattern (5)... Adhesive layer (6)... Embossing Figure 1 permission Kazuo Suzuki, Representative of Toppan Printing Co., Ltd.

Claims (1)

[Claims] At the same time as the bottle is formed, it is adhered to the body of the bottle, a metal vapor deposition layer is provided on the surface of the base material, a printed pattern layer is provided thereon, and an adhesive layer that can adhere to the bottle is provided on the back surface of the base material, A label characterized in that a concavo-convex pattern is provided on the vapor deposition surface having the above-mentioned printed pattern.