JPH08230953A - Container with lightproof label - Google Patents

Abstract

PURPOSE: To provide a lightproof container which can be supplied at a low cost and has excellent function in environmental protection since no residue is left after incineration. CONSTITUTION: A container with a lightproof label includes a label with lightproof layers comprising aluminum vapor-deposited plastic films laminated on a rear face of a base or a label 3 with lightproof layers comprising solidly printed layers with India ink on a rear of the base wherein the label 3 is pasted to an outer periphery of a peripheral wall of a container body 1.

Description

Detailed Description of the Invention

[0001]

2. Description of the Related Art As a container for accommodating an internal filler which requires a light-shielding property, a base material is provided on the outer periphery of the peripheral wall portion of the container body.
BACKGROUND ART Containers to which a label having a light-shielding property having a layer structure composed of an aluminum foil-adhesive layer is attached are often used particularly in the field of plastic containers.

[0002]

A labeled container using a label having a layered structure consisting of the above-mentioned substrate-aluminum foil-adhesive layer has a high price of the aluminum foil for imparting the light-shielding property, and the light-shielding property is high. It is not possible to inexpensively supply a labeled container having a.

In addition, this labeled container having a light-shielding property is environmentally friendly in that when the label or the labeled container itself is subjected to a disposal treatment by incineration after use, an incineration residue due to aluminum foil is generated. There is also a downside.

Therefore, an object of the present invention is to provide a light-shielding labeled container using a label that can be supplied at a low price, has very little residue due to incineration, and has an excellent effect on environmental protection. To do.

[0005]

The above object can be achieved by a labeled container having a light-shielding property according to the present invention having the following constitution. That is, the present invention comprises a labeled container having a light-shielding property, in which a label having a light-shielding layer made of an aluminum vapor-deposited biaxially stretched plastic film laminated on the back surface of a substrate is attached to the outer periphery of the peripheral wall portion of the container body.

Further, according to the present invention, a label in which a light-shielding layer made of a solid black printing layer is laminated on the back surface of a substrate is a labeled container having a light-shielding property, which is attached to the outer periphery of the peripheral wall of the container body. .

Further, according to the present invention, the label having each of the above-mentioned constitutions is placed on the inner surface of the mold, and simultaneously with the molding of the container body by blow molding or stretch blow molding of synthetic resin, the label is provided on the outer periphery of the peripheral wall portion of the container body. It consists of a labeled container having a light-shielding property which is adhered.

Further, according to the present invention, the label having the above-mentioned constitution is placed on the inner surface of the mold, and the label is attached to the outer periphery of the peripheral wall portion of the container body at the same time when the container body is molded by injection molding of synthetic resin. It comprises a labeled container having a light-shielding property.

[0009]

In the labeled container having a light-shielding property of the present invention,
A label having a light shielding layer made of a biaxially stretched aluminum vapor-deposited plastic film laminated on the back surface of the base material is attached to the outer periphery of the peripheral wall portion of the container body.

Further, in the labeled container of the present invention, a label having a light-shielding layer made of a solid black printing layer laminated on the back surface of the base material is attached to the outer periphery of the peripheral wall of the container body. .

Therefore, according to the labeled container having a light-shielding property of the present invention, the container itself can be provided with the light-shielding property of the label itself attached to the outer periphery of the peripheral wall of the container body. It becomes a container with a label having the light-shielding performance of.

Further, in the labeled container having a light-shielding property of the present invention, a label having a light-shielding layer made of an aluminum vapor-deposited biaxially stretched plastic film laminated on the back surface of the base material, or a black solid printing layer on the back surface of the base material Since a label with a light-shielding layer laminated is used, the label itself is much cheaper than a conventional label using an aluminum foil as a light-shielding layer, so it is possible to supply a labeled container with light-shielding performance at a low cost. You can

Further, in the light-shielding labeled container of the present invention, a label in which a light-shielding layer made of an aluminum vapor-deposited biaxially stretched plastic film is laminated on the outer surface of the peripheral wall portion of the container body on the back surface of the substrate, or the substrate Since a label laminated with a light-shielding layer consisting of a black solid printing layer is attached to the back side, when the label or the labeled container itself is disposed of by incineration after use of the container, incineration residue caused by the label Is extremely small and has an excellent effect on environmental protection.

[0014]

EXAMPLES The concrete structure of the labeled container having a light-shielding property of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a labeled container having a light-shielding property according to the present invention, in which a flange 2 is integrally formed at the mouth of a cup-shaped container body 1 having a thread bottom. The label 3 is attached to the outer periphery of the peripheral wall portion of the container body 1.

The container body 1 is molded by injection molding of white pigmented polystyrene (GPPS), high impact polystyrene (HIPS), polyethylene, polypropylene, polyethylene terephthalate, etc.
It is formed to 6 mm.

As shown in FIG. 2, the label 3 has a layered structure in which a light-shielding layer 5 made of a solid black printing layer and an adhesive layer 6 are sequentially laminated on the back surface of a substrate 4 made of paper. are doing.

As the base material 4, paper, synthetic resin-impregnated paper, synthetic resin-coated paper, synthetic paper, or the like is used as the base material 4, similar to the base material used in conventional labels.

The light-shielding layer 5 composed of a solid black printing layer contains, for example, a black printing ink containing a salt / vinyl acetate resin, an acrylic resin, a fibrin resin or the like as a vehicle resin, that is, a black pigment or a black dye. Is formed as a solid printing layer with the printing ink. When using a black printing ink with a black pigment, it is preferable to use an ink containing 10 to 20% by weight of a black pigment.

The light-shielding layer 5 composed of a black solid printing layer can be formed by utilizing gravure printing, silk screen printing, transfer printing or the like. When the solid printing layer is formed by gravure printing, the plate depth is 35 to 60 μm.
It is good to use the thing of about m.

The adhesive layer 6 is for firmly bonding the label 3 and the outer periphery of the peripheral wall of the container body 1.

FIG. 3 shows an example of another label used in the labeled container having a light-shielding property of the present invention.
The label 7 has a light-shielding layer 9 made of an aluminum vapor-deposited biaxially stretched plastic film laminated on the back surface of a base material 8 made of paper using an adhesive (not shown). It has a layered structure in which the layers 10 are laminated.

As the base material 8, paper, synthetic resin-impregnated paper, synthetic resin-coated paper, synthetic paper, or the like is used as the base material 8 as in the case of the label 3 shown in FIG.

As the light-shielding layer 9 made of an aluminum vapor-deposited biaxially stretched plastic film, for example, a biaxially stretched plastic film of polyethylene terephthalate, polyamide, polypropylene or the like having a thickness of about 9 to 50 μm and a thickness of about 400 to 2000 liters is used. An aluminum vapor-deposited biaxially stretched plastic film having an aluminum vapor deposition layer is used.

An adhesive layer 10 laminated on a light-shielding layer 9 made of an aluminum vapor-deposited biaxially stretched plastic film.
Is for firmly adhering the label 7 to the outer periphery of the peripheral wall of the container body.

It should be noted that the label 3 or the label 7 is placed on the inner surface of the mold in advance, and simultaneously with the molding of the container body by blow molding, stretch blow molding, injection molding or the like of a synthetic resin, the outer periphery of the container body is When a labeled container having a light-shielding property is molded by sticking the label 3 or the label 7, the adhesive layer 7 or the adhesive layer 10 can be bonded at the molding temperature of the synthetic resin forming the container body. It is preferable to use a heat-sensitive adhesive layer that exhibits

Next, a more specific structure of the labeled container of the present invention will be described.

Example 1 In FIG. 2, a salt containing 20% by weight of carbon black was formed on the entire back surface of a substrate 4 made of paper having a thickness of 0.7 mm.
The light-shielding layer 5 was formed by solid-printing a kneaded ink of vinyl acetate resin using a gravure printing plate having a plate depth of 60 μm.

Then, a heat-sensitive adhesive (Adcoat 330w 1790: Toyo Morton Co., Ltd.) was extrusion-coated on the entire surface of the light-shielding layer 5 to form a heat-sensitive adhesive layer 6, and a label 3 was obtained.

After the label 3 is cut into a shape in which the peripheral wall portion of the cup-shaped container body 1 is expanded, the label 3 is rolled into a cylindrical shape so that the surface of the heat-sensitive adhesive layer 6 becomes the peripheral surface of the cylinder. By setting in advance along the inner peripheral surface of the injection-molding die and injecting high-impact polystyrene into the inside, the cup-shaped mold having the flange 2 shown in FIG. At the same time as molding the container body 1, a label 3 having a light-shielding property, which is a product of one embodiment of the present invention in which the label 3 is pressure-bonded and adhered to the outer periphery of the peripheral wall portion of the container body 1, was obtained.

Example 2 In FIG. 3, a vapor-deposited aluminum layer having a thickness of about 1000 Å is formed on the entire back surface of a substrate 8 made of paper having a thickness of 0.7 mm with respect to a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm. The light-shielding layer 9 made of the aluminum vapor-deposited biaxially stretched plastic film was laminated using a urethane adhesive, and then a heat-sensitive adhesive (Adcoat 330w 1790: Toyo Morton Co., Ltd.) was applied to the entire surface of the light-shielding layer 9. The label 7 was obtained by providing the heat-sensitive adhesive layer 10 by extrusion coating.

After cutting the label 7 into a shape in which the peripheral wall portion of the bottle-shaped container body is expanded, the label 7 is rolled into a cylindrical shape with the surface of the heat-sensitive adhesive layer 10 being the peripheral surface of the cylinder.
Set in advance along the inner peripheral surface of the blow molding die,
By placing a parison made of a test tube-shaped polyethylene terephthalate injection-molded body having a bottle neck portion therein, and subjecting the parison to biaxial stretch blow molding,
In FIG. 4, at the same time as forming the bottle-shaped container body 11, the label 7 is pressure bonded to the outer periphery of the peripheral wall portion of the container body 11,
A labeled container having a light-shielding property, which is the adhered one example product of the present invention, was obtained.

Experiment The light-shielding test result of the label 3 used in the above Example 1 is shown in FIG. 5 with the light transmittance indicated by A.

Further, the label 7 used in the above-mentioned Example 2
The result of the light-shielding property test is shown by the light transmittance shown by B in FIG.

Further, for comparison, a heat-sensitive adhesive (Adcoat 330
(w 1790: Toyo Morton Co., Ltd.) shows the light-shielding test result of the label provided with the heat-sensitive adhesive layer, with the light transmittance indicated by C in FIG.

As is clear from the light transmittance shown in FIG.
It can be confirmed that the label used in the labeled container of the present invention has extremely excellent light-shielding properties.

[0037]

As described above, the labeled container having a light-shielding property of the present invention is a label in which a light-shielding layer made of an aluminum vapor-deposited biaxially stretched plastic film is laminated on the back surface of the substrate, or the back surface of the substrate. A label having a light-shielding layer formed of a solid black printing layer is laminated on the outer periphery of the peripheral wall of the container body, and has the excellent light-shielding property of the label.

According to the labeled container having a light-shielding property of the present invention, the label attached to the outer periphery of the peripheral wall portion of the container body is a light-shielding aluminum biaxially stretched plastic film on the back surface of the substrate. A stack of layers,
Alternatively, since a light-shielding layer composed of a black solid printing layer is laminated on the back surface of the base material, it is much cheaper than a label using an aluminum foil as a light-shielding layer, and as a result, a labeled container having light-shielding properties. Can be supplied at low cost.

The label in which a light-shielding layer made of a solid black printing layer is laminated on the back surface of the base material is compared with a label in which a light-shielding layer made of an aluminum vapor-deposited biaxially stretched plastic film is laminated on the back surface of the base material. Although it can be supplied at a lower cost, the light-shielding effect of these two labels is almost the same.

Further, according to the labeled container having a light-shielding property of the present invention, a label in which a light-shielding layer made of an aluminum vapor-deposited biaxially stretched plastic film is laminated on the back surface of the substrate,
Alternatively, since a label is used that has a light-shielding layer consisting of a black solid printing layer laminated on the back surface of the base material, when the label or the labeled container itself is disposed of by incineration after use of the container, the label causes It has a very small amount of incineration residue and has an excellent effect in terms of environmental protection.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing one embodiment of a labeled container having a light-shielding property of the present invention.

FIG. 2 is an enlarged vertical cross-sectional view showing an example of a label used for the light-shielding labeled container of the present invention.

FIG. 3 is an enlarged vertical cross-sectional view showing another example of the label used for the light-shielding labeled container of the present invention.

FIG. 4 is a vertical cross-sectional view showing another embodiment of the labeled container having a light-shielding property of the present invention.

FIG. 5 is a graph showing light transmittances of labels used in Examples 1 and 2 and a label for comparison.

[Explanation of symbols]

1 ... ・ Container main body 2 ・ ・ ・ ・ Flange 3 ・ ・ ・ ・ ・ ・ Label 4 ・ ・ ・ ・ Label of label 5 ・ ・ ・ ・ Light-shielding layer consisting of black solid printing layer 6 ・ ・ ・ ・ ・ ・ Adhesive layer 7 ... Label 8 ... Base 9 ... Light-shielding layer made of aluminum vapor-deposited biaxially stretched plastic film 10 ... Adhesive layer 11 ... Container body

Claims (4)

[Claims] 1. A label having a light-shielding property, wherein a label having a light-shielding layer made of an aluminum vapor-deposited biaxially stretched plastic film laminated on the back surface of a base material is attached to the outer periphery of the peripheral wall portion of the container body. With container. 2. A labeled container having a light-shielding property, wherein a label having a light-shielding layer made of a solid black printing layer laminated on the back surface of a substrate is attached to the outer periphery of the peripheral wall of the container body. . 3. The label is placed on the inner surface of the mold, and the label is attached to the outer periphery of the peripheral wall portion of the container body at the same time when the container body is formed by blow molding or stretch blow molding of synthetic resin. Alternatively, the labeled container having a light-shielding property according to claim 2. 4. The label is placed on the inner surface of the mold, and the label is attached to the outer periphery of the peripheral wall portion of the container body at the same time when the container body is formed by injection molding of synthetic resin. A labeled container having a light-shielding property according to the item 1.