JP3676519B2 - Container with light-shielding label - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin container for containing an inner filling material that requires light shielding properties, and relates to a container with a light shielding label in which a light shielding label is attached to the outer periphery of a peripheral wall portion of a container body.
[0002]
[Prior art]
As a container for containing the inner filling material that requires light shielding properties, a label base material made of paper, synthetic resin impregnated paper, synthetic resin coated paper, synthetic resin film, or the like is provided on the outer periphery of the peripheral wall portion of the container main body. A container with a light-shielding label formed by sticking the light-shielding label used is used, and a light-shielding label having a light-shielding layer composed of a resin layer containing a colorant such as black or ultramarine blue is often used. Yes.
[0003]
[Problems to be solved by the invention]
In the light-shielding label used in the container with the light-shielding label, a label provided with a resin layer containing a colorant to provide light-shielding properties is a step of cutting the light-shielding label into sheets. The generated paper dust adheres to the cut end face and the vicinity thereof, and the paper powder is colored by the dark colorant used for providing light shielding properties.
[0004]
For this reason, particularly in the case of a container with a light-shielding label that forms a container body by molding a synthetic resin into which the light-shielding label is inserted, the above dark paper dust adhered to the light-shielding label Flows and adheres to places other than the label sticking surface of the molded container.
[0005]
In particular, synthetic resin molded containers for filling foods and drinks are often white molded containers filled with white pigment, and dark colored paper attached to locations other than the label sticking surface of the molded containers. In order for the presence of foreign matter due to powder to become more prominent and to give an unhygienic impression, if the foreign matter consisting of this colored paper powder adheres to the mouth of the top of the container body or its vicinity, it is treated as scrap. Sometimes even done.
[0006]
Accordingly, an object of the present invention is to provide a light-shielding labeled container to form a container body by molding the light-shielding label synthetic resin to be inserted with a light-shielding coating layer containing a coloring agent, moreover container In this case, the colored paper powder resulting from the light-shielding coating layer does not adhere to the cut end surface forming the at least the upper side of the light-shielding label or the vicinity thereof, and in particular, the food and beverage outlet at the top of the container body Another object of the present invention is to provide a container with a light-shielding label having a sanitary good appearance in which colored paper dust is not fixed as a foreign matter in the vicinity thereof.
[0007]
[Means for Solving the Problems]
Said subject is achieved by the container with a light-shielding label of this invention by the structure described below. That is, the present invention provides a light-shielding property in which a light-shielding label is placed on the inner surface of the mold and the light-shielding label is adhered to the outer periphery of the peripheral wall portion of the container body at the same time as the molding of the container body by synthetic resin injection molding. A label-attached container, wherein the light-shielding label has an upper edge, a lower edge, and a left and right side edge on the back surface of the label substrate, at least at the upper edge of the substrate. A container with a light-shielding label, which is a label formed by forming a light-shielding coating layer containing a colorant so as to leave a blank part in the part.
[0008]
In the present invention, the light-shielding label is placed on the inner surface of the mold, and the light-shielding label is attached to the outer periphery of the peripheral wall portion of the container body at the same time as the container body is molded by synthetic resin blow molding or stretch blow molding. A light-shielding label-attached container, wherein the light-shielding label has at least the upper side of the base material on the back surface of the label base material having an upper side portion, a lower side portion, and left and right side portions. The container comprises a light- shielding label-attached container which is a label formed by forming a light-shielding coating layer containing a colorant so as to leave a blank portion at the edge .
[0009]
The light-shielding label used in the container with the light-shielding label according to the present invention having the above-described structure is formed by forming a light-shielding coating layer containing a colorant on the back surface of the label base material, and is at least synthesized. The light-shielding coating layer is formed on the upper side portion of the label base material located on the mouth side of the resin container body so as to leave a blank portion on the edge portion.
[0010]
Therefore, on the back surface of the label base material having the upper side portion, the lower side portion, and the left and right side portions, a margin is left on the edge portion of the upper side portion and the lower side portion of the base material. wherein by using a light-shielding property of the light-shielding label to form a coating layer, yet light-shielding labeled container to form a container body by molding of synthetic resin to be inserted the light-shielding label Te, the container body It is possible to make a container with a light-shielding label in which foreign matter is not fixed due to colored paper powder not only at the upper mouth part and its vicinity, but also at the lower part and the bottom part of the container body.
[0011]
Furthermore, in the four peripheral parts on the back side of the label base material, a light-shielding coating layer is formed so as to leave a marginal part at the edge part, so that no foreign matter is fixed due to colored paper powder. A container with a light-shielding label can be formed.
[0012]
The light-shielding coating layer in the light-shielding label is preferably composed of a black or ultra-blue solid printing layer.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing an embodiment of a container with a light-shielding label according to the present invention, in which a flange 2 is formed integrally with an upper mouth portion of a cup-shaped synthetic resin container body 1 having a thread bottom. A light-shielding label 3 is attached to the outer periphery of the peripheral wall portion of the container body 1.
[0016]
The container body 1 is formed by injection molding of polystyrene, high impact polystyrene, polyethylene terephthalate, or the like, including, for example, a polyolefin resin such as white pigmented polyethylene or polypropylene.
[0017]
The container body may be a molded body obtained by blow molding or stretch blow molding a polyolefin resin such as polyethylene or polypropylene, or a parison made of polyethylene terephthalate.
[0018]
As shown in [FIG. 2], the light-shielding label 3 has a back surface of a label base material having an upper side portion 4, a lower side portion 5, and left and right side portions 6 and 7, that is, a cup-type. A colorant is contained on the back surface of the label base material having a shape in which the peripheral wall portion of the container body 1 is developed so that at least the upper side portion 4 of the label base material leaves a marginal portion 8 at the edge portion. A light-shielding coating layer 9 is provided.
[0019]
In the light-shielding label 3 having the above configuration, paper, synthetic resin-impregnated paper, synthetic resin-coated paper, synthetic paper, a plastic film, a composite material thereof, or the like is used as a label base material.
[0020]
The light-shielding label 3 shown in FIG. 2 has a light-shielding coating on the back surface of the label base material so that a marginal portion 8 is left at the edge of the four peripheral portions of the label base material. Although the layer 9 is formed, it is sufficient that the blank portion 8 exists at least in the upper side portion 4 of the label base material.
[0021]
If the margin part 8 formed along the edge part is formed with a width that does not allow the cutter blade for cutting the label into sheets to touch the light-shielding coating layer 9 The light-shielding coating layer 9 is usually formed so that the blank portion 8 forms a narrow width of about 0.5 to 1.5 mm.
[0022]
The light-shielding coating layer 9 can be formed as a printing layer made of ink in which a colorant is mixed in a resin forming a vehicle.
[0023]
As the colorant, black or ultra-blue pigments, dyes, iron oxides and the like can be used according to the wavelength of light to be blocked.
[0024]
The light-shielding coating layer 9 is made of, for example, gravure printing, silk screen using a printing ink containing a salt or vinyl acetate resin, an acrylic resin, a fiber resin, or the like and containing a black or ultra-blue pigment or dye. It can be formed using printing, offset printing or transfer printing. In addition, when using the black printing ink by a black pigment, it is good to use the ink containing about 5-20 weight% black pigment, and the light-shielding coating layer which consists of a solid printing layer by gravure printing When forming 9, it is preferable to use a plate having a plate depth of about 15 to 30 μm and perform overprint printing if necessary.
[0025]
In order to firmly bond the label 3 and the outer periphery of the peripheral wall portion of the container body 1, an adhesive layer is formed on the back surface of the label base material as necessary via the light-shielding coating layer 9. Can be kept.
[0026]
The container with a light-shielding label of the present invention has a light-shielding label placed on the inner surface of the mold in advance, and simultaneously with the molding of the container body by synthetic resin blow molding, stretch blow molding, injection molding or the like, since those on the outer periphery of the peripheral wall portion of the container body made by attaching a light shielding label, the adhesive layer in the light-shielding label exhibits adhesion ability in the forming temperature of the synthetic resin forming the container body It is good to consist of a heat-sensitive adhesive layer.
[0027]
The surface of the label substrate can be provided with designability by printing, or a plastic laminate for imparting water resistance.
[0028]
【Example】
Hereinafter, the more specific structure of the container with a light-shielding label of the present invention will be described based on examples.
[0029]
Example 1
In FIG. 2, offset printing with a kneading ink of a salt / vinyl chloride resin containing 20% by weight of carbon black on the back surface of a label base material made of resin-impregnated paper having a thickness of 0.085 mm, a width of 636 mm, and a length of 939 mm. Is applied, the single label-shaped coating layer 9 having a shape in which the peripheral wall portion of the cup-shaped container body is developed has a width of 1.5 mm on the edge of the four peripheral portions of the single label shape. A sheet was formed that was continuously and repeatedly formed in the length direction and the width direction of the label base material so as to leave the blank portion 8.
[0030]
Next, a heat-sensitive adhesive layer is provided on the entire surface of the light-shielding coating layer 9 and the blank portion 8 by roll coating with a heat-sensitive adhesive (ADCOAT 330w 1790: Toyo Morton Co., Ltd.), and a label sheet Got.
[0031]
Subsequently, the label sheet was cut vertically and horizontally by a die-cut roll along the substantially central part of the blank portion 8 to obtain a single-wafer light-shielding label 3.
[0032]
Further, this light-shielding label 3 is set in advance along the inner peripheral surface of the injection mold in such a state that the heat-sensitive adhesive layer is rolled into a cylindrical shape so that the surface of the heat-sensitive adhesive layer becomes the inner peripheral surface of the cylinder. In addition, a high impact polystyrene containing a white pigment is injection-molded to form a cup-shaped container body 1 having a flange 2 in FIG. A container with a light-shielding label, which is an example product of the present invention in which a light-shielding label 3 is pressure-bonded and adhered to the outer periphery of the container, was obtained.
[0033]
Example 2
By applying offset printing with a kneading ink of a salt / vinyl acetate resin containing 20% by weight of carbon black on the back surface of a label base material made of resin-impregnated paper having a thickness of 0.085 mm, a width of 636 mm, and a length of 939 mm The single label-shaped coating layer 9 having a shape in which the peripheral wall portion of the bottle-shaped container body is developed has a margin portion 8 having a width of 1.5 mm on the edge of the four peripheral portions of the single label shape. As it was left, the sheet | seat formed by repeating continuously each in the length direction and the width direction of the said base material for labels was obtained.
[0034]
Next, a heat-sensitive adhesive layer is provided by roll coating a heat-sensitive adhesive (ADCOAT 330w 1790: Toyo Morton Co., Ltd.) on the entire surface of the light-shielding coating layer and the blank portion to obtain a label sheet. It was.
[0035]
Subsequently, the label sheet was cut by a die-cut roll along a substantially central portion of the blank portion to obtain a sheet-shaped light-shielding label.
[0036]
Further, the light-shielding label is set in advance along the inner peripheral surface of the blow molding die in a state where the heat-sensitive adhesive layer is rounded into a cylindrical shape so that the surface of the heat-sensitive adhesive layer becomes the inner peripheral surface of the cylinder. , By placing a parison composed of an injection molded body of a test tube-shaped polyethylene terephthalate having a bottle neck, and forming the bottle-shaped container body 10 in FIG. A container with a light-shielding label, which is a product of one example of the present invention, in which the light-shielding label 11 is pressure-bonded and adhered to the outer periphery of the peripheral wall portion of the container body 10 was obtained.
[0037]
【The invention's effect】
As described above, the light-shielding label-attached container of the present invention has at least the upper side portion of the base material on the back surface of the label base material having the upper side portion, the lower side portion, and the left and right side portions. In this case, a light-shielding label formed by forming a light-shielding coating layer containing a colorant so as to leave a blank portion on the edge is previously placed on the inner surface of the mold, and blow molding of a synthetic resin, At the same time as forming the container body by stretch blow molding or injection molding, the light-shielding label is adhered to the outer periphery of the peripheral wall portion of the container body .
[0038]
Therefore, the light-shielding label-attached container of the present invention is a labeled container having a high light-shielding performance that has the light-shielding property of the label attached to the outer periphery of the peripheral wall portion of the container body as it is.
[0039]
In addition, since the container with a light-shielding label of the present invention uses a light-shielding label formed by forming a light-shielding coating layer containing a colorant on the back surface of the label base material, Compared with a label having an aluminum vapor-deposited layer as a light-shielding layer, the manufacturing cost of the label itself is low, and when the container is used, the label or the container with the label itself is subjected to disposal by incineration. There is no incineration residue caused by the aluminum vapor deposition layer, and it has an excellent effect in terms of environmental conservation.
[0040]
Furthermore, the container with a light-shielding label according to the present invention is a light-shielding coating containing a colorant on the back surface of a label base material so that a margin portion is left on the edge portion of at least the upper side portion of the base material. Since a light-shielding label formed with a layer is used, it is a container with a light-shielding label that forms the container body by molding a synthetic resin into which the light-shielding label is inserted, but it is attached to at least the top of the container the paper powder adhered to the label portion to be, without colored paper powder caused by the shading of the coating layer is present, thereby, concentrated in particular an upper portion of food outlet or near the container body This is a container with a light-shielding label having a sanitary and good appearance, in which colored paper dust is not fixed as a foreign matter.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing one embodiment of a container with a light-shielding label according to the present invention.
FIG. 2 is a plan view showing an example of the back surface of a light-shielding label used in a container with a light-shielding label according to the present invention.
FIG. 3 is a longitudinal sectional view showing another embodiment of a container with a light-shielding label according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Synthetic resin container body 2 ... Flange 3 ... Light-shielding label 4 ... Upper side part 5 of label base material ... Lower side part 6 of label base material ... ..Left side part 7 of the label base material ... Right side part 8 of the label base material .... Blank part 9 of the light-shielding coating layer containing the colorant Light-shielding coating layer 10 ... Synthetic resin container body 11 ... Light-shielding label

Claims (4)

Placing a light shielding property labels to the mold inner surface, met shielding property labeled container injection molded bonded to cause the light-shielding label on the outer periphery of the peripheral wall portion of the same time the container body and molding of the container body by comprising a synthetic resin The light-shielding label has a blank portion on the edge of at least the upper side of the base material on the back surface of the label base material having an upper side, a lower side, and left and right side parts. A container with a light-shielding label, which is a label formed by forming a light-shielding coating layer containing a colorant so as to remain. A light-shielding label in which a light-shielding label is placed on the inner surface of the mold, and the light-shielding label is adhered to the outer periphery of the peripheral wall portion of the container body at the same time as forming the container body by blow molding of synthetic resin or stretch blow molding The light-shielding label has an upper edge, a lower edge, and a left and right side edge on the back surface of the label substrate, at least at the upper edge of the substrate, its edge A container with a light-shielding label, which is a label formed by forming a light-shielding coating layer containing a colorant so as to leave a blank portion. The light-shielding coating layer in the light- shielding label is formed so as to leave a blank portion at the edge in the four peripheral portions of the label base material. Container with light-shielding label as described. 4. A container with a light-shielding label according to claim 1, wherein the light-shielding coating layer of the light- shielding label comprises a black or ultra-blue solid printing layer.

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