JPH0661829B2 - Labeled container and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a method for producing a plastic container in which a label is attached at the same time as hollow molding and a sharp embossed pattern is formed on the label surface.

<Prior Art> In recent years, instead of a glass bottle, a light weight plastic container having good moldability has been widely used. A printing layer or a label is generally attached to the outer surface of the container in order to make the contents and merchandise display attractive. In particular, the surface of the label is embossed as a method of imparting beauty.

In order to emboss a label that has been pasted on a conventional container, the label in a wound state before being stamped on the label is continuously embossed by an embossing press machine, then punched and then molded into a container. Embossing has been applied in the process of pasting.

<Problems to be Solved by the Invention> In the above-mentioned conventional technique, when a label is previously embossed and then the label is embossed by a method of attaching the label to a container, the label is attached to a hollow container. , I can't get a clear embossed pattern. In addition, it was not possible to provide an embossed pattern with severe unevenness, and there was a problem in adhesion, which was not satisfactory.

<Means for Solving Problems> A label having an embossed pattern partially formed in a pattern by an embossing press in advance on a body of a hollow container, and an adhesive layer exhibiting an adhesive effect at a molding temperature. With the adhesive layer on the inside, the label is inserted and held on the inner surface of the mold on which the engraving pattern has been previously applied at the position corresponding to the embossed pattern of the label, and the heat-softened parison is introduced into the mold. After the mold was closed, the parison was blown, and the container was molded and the container surface was labeled at the same time as the solution.

As the pattern to be applied to the mold, satin pattern, leather pattern,
There are various types such as character designs or designs that exert a design effect.
However, the above pattern is not uniform on the entire surface of the label, but is partially formed in a pattern.

As the molding method, it is possible to use direct blow molding, stretch blow molding, pressure molding, vacuum molding, press molding and the like.

<Operation> A label having a partially embossed pattern formed in a pattern is introduced into a mold having the same engraved pattern as the embossed pattern, and the position where the embossed pattern and the engraved pattern match each other. The adhesive layer is held so as to face the anti-mold direction, and then air is blown into the parison to form a desired container, so that the bottle is well adapted to the engraving pattern.

<Example> A container was circular in shape, and a label was attached at the same time as direct blow molding with a HEIDEN polyethylene (hereinafter referred to as HDPE) resin.

The structure of the label is as shown in FIG. Hot melt type adhesive on the back (ADCOAT AD31DW953A-15
The adhesive layer 2 made of Toyo Morton) is provided.

Next, a star-shaped embossed pattern 4 is provided on the label by an embossing press.

Embossed pattern 4 of the label 5 on the label holding portion of the mold 7.
The same shape as the embossed pattern 4 with a depth of 0.5 at the position corresponding to
An engraved pattern 8 of a star pattern of about 1.5 mm is provided, and the label 5 is held here, and is held and fixed by a vacuum vent 9 for holding the label in the mold.

Next, HDPE parison 10 at 180 ° C. was inserted into a mold cooled to 7 ° C. and blown at a blow pressure of 7 kgf / cm ² . The weight of the molded product including the label is 35.3 g, and the cycle time during molding is 16 seconds.

The bolt 6 obtained by the above method was such that the label 5 and the container were completely adhered to each other, and the label surface had a very sharp and clear star pattern embossed pattern 4.

<Effect> According to the present invention, a container having a very sharp and clear embossed pattern can be obtained at the same time as molding by producing a labeled container by the above method, and the container and the label have a sense of unity. It was attached together with, and had a high cosmetic effect.

[Brief description of drawings]

FIG. 1 is a structure of a label used in the present invention, FIG. 2 is a cross section of a label-attached portion of a labeled container, and FIG. 3 is a cross section of a metal mold that has been engraved. 1 …… Label base material 2 …… Adhesive layer 3 …… Picture layer 4 …… Embossing pattern 5 …… Label 6 …… Bottle 7 …… Mold 8 …… Engraving pattern 9 …… Vacuum vent 10 …… Parison

Claims (2)

[Claims] 1. A label comprising a hollow plastic container having an embossed pattern partially formed in a pattern on its surface, and a label having an embossed pattern of the same shape as the container stuck along the embossed surface. container. 2. A label provided with an embossed pattern partially formed into a pattern is inserted into a mold provided with an engraved pattern substantially the same as the embossed pattern, and the embossed pattern and the engraved pattern are inserted. A method for producing a labeled container, characterized in that after holding the label at a position where is matched, the plastic parison is introduced into a mold, air is blown into the parison to perform hollow molding, and at the same time, the label is attached.