JP2615796B2 - Labeled container and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a container having a label having a convex portion attached to a surface thereof.

<Prior Art> Conventionally, there is a plastic hollow molded container with a label in which a label having characters, pictures, and the like as projections is pasted on the surface of the container, but when the container is manufactured, the label is embossed in advance. There is a method in which the label is applied to the surface of the container after processing, or the label is attached to the surface of the container at the same time when the label is inserted into a heat-sensitive mold and then subjected to hollow molding. .

<Problems to be Solved by the Invention> In the former case of the prior art, since the label has irregularities, it is not possible to apply sufficient pressure at the time of sticking the label. is there.

In the latter case, there is a problem that the molding reproducibility in the details of the engraved portion of the mold is insufficient due to the moldability of the resin itself, gas generated during molding, or poor elongation of the label.

 The present invention has a problem of solving the above problems.

<Means for Solving the Problems> The present invention is intended to solve the above-mentioned problem, that is, to obtain a hollow molded container with a label in which a part of a label, such as a character and a picture, is embossed in a convex shape. In addition, the reproducibility of the details of the convex portions is good, and molding and labeling are performed simultaneously.

Hollow molding methods such as direct blow molding, injection blow molding, and stretch blow molding can be considered as the molding method constituting the present invention.

The resin applied as the material of the hollow container includes polyethylene, polypropylene, polyvinyl chloride, polycarbonate, polyethylene terephthalate and the like. The cavity of the molding die is engraved with a desired emboss shape.

The label that is the essence of the present invention is a substrate, adhesive, ink,
It is composed of foamed ink. The base material is not particularly limited as long as it is a general label paper, and a transparent film is also possible. The adhesive is heat-sensitive and is coated on the back of the base material.It is melted by the holding heat of the resin when the hollow molded container is molded, exhibits adhesiveness, and adheres to the container wall at the same time as molding. Having. The ink is a general printing ink and forms characters, patterns, and the like. The foamed ink is printed at the position to be embossed among the characters and pictures on the label. It is preferable that the microcapsule type foams at a relatively low temperature such that the foam is formed by the heat of holding the resin and the heat of the mold when the container is molded.

Next, the molding method of the present invention will be described with reference to a representative molding method, direct blow molding.

Melt the plastic material with an extruder, extrude it as a parison from the head, bite this parison with a mold, blow air into the parison, and obtain the desired shape. The law is the same. The difference is that the mold cavity is engraved according to the embossed shape of the label, and the label is inserted into this mold before the parison bites the wall so that the ink surface contacts the mold wall. .

The insertion position is set so that the engraved portion and the foamed ink printing portion match. When air is blown into the parison in the above state, the desired container is formed, and at the same time, the label is stretched by the blowing pressure also in the mold engraving portion, and the foaming ink is foamed by the holding heat of the parison and the heat of the mold. The embossing of the label is performed, and at the same time, the adhesive exerts adhesiveness by the holding heat of the parison, and the label is attached to the container.

<Operation> The label having the foamed resin layer provided on the convex portion of the label provided with the convex portion according to the present invention is inserted into a mold having a concave portion corresponding to the convex portion, and the container is molded. It can be manufactured in a processing step, and the reproducibility of the projection can be sharpened.

<Example> A 250cc capacity cosmetic container made of polycarbonate will be described as an example of the present invention with reference to the drawings.

FIG. 1 is a front view of the present embodiment, and FIG. 2 is a sectional view.

The container has a flat shape of 65 (W) x 35 (T) x 180 (H) m / m, and 60 (W) x 100 (H) m on the front and back of the bottle (10).
/ m size labels (11) and (13) are attached.

The label (10) is embossed with a floral pattern (12) in the center, a product name in the upper part, and a manufacturer name in the lower part. The mold cavity is engraved with a maximum depth of 2m / m corresponding to the embossed shape.

The label consists of Oji Yuka synthetic paper and YUPO FPG as base materials.
# 110, an EVA hot melt (Adcoat 330w1790, manufactured by Toyo Morton) as an adhesive, and a microcapsule type made of Matsumoto Micro Fat F-30, manufactured by Matsumoto Yushi Seiyaku Co., Ltd., as a foaming ink.

The parison extrusion temperature is 260 ° C, the mold is heated to 90 ° C, the air blowing pressure to the parison is 6kg / cm ² , the forming cycle is 20
Seconds.

The container molded under the above conditions was subjected to labeling at the same time as molding, and the embossed portion faithfully reproduced the engraved state of the mold, and the reproducibility reached an average of 95%.

<Effect> According to the present invention, a label having an embossed portion can be attached at the same time as molding, and by this manufacturing method,
A high-quality hollow molded container with high commercial value was obtained.

This type of container is applicable to a wide range of uses such as cosmetics, toiletries, foods, and pharmaceuticals.

[Brief description of the drawings]

FIG. 1 is an explanatory front view of an embodiment of the present invention, and FIG. 10: Hollow molded container, 11: Label 12: Embossed floral pattern, 13: Back label

Claims (2)

(57) [Claims] 1. A container with a label, wherein a label having a convex portion is attached to the surface of the container, the container having a convex portion corresponding to the convex portion of the label on the surface of the container corresponding to the convex portion of the label.
In addition, the convex part of the label is foamed with a heat-sensitive foaming agent. 2. A method for producing a labeled container wherein a label is affixed to the surface of the container simultaneously with the molding of the container, wherein a convex portion is provided, and the label having a heat-sensitive foam layer formed on the convex portion is provided with a convex portion. A method for manufacturing a container with a label, comprising: inserting and mounting a mold having a concave portion at a position corresponding to a forming position, and forming a convex portion on a label simultaneously with molding.