JP3371621B2 - Label exterior dry cell - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer label for dry batteries and the like.

[0002]

2. Description of the Related Art Conventionally, as an outer label for a dry battery, one described in JP-A-59-123161 is known. The outer label for a dry battery described in this publication has a print layer provided on the surface of a heat-shrinkable plastic film (shrink film) and a pressure-sensitive adhesive layer provided on the back surface thereof. It was possible to wind-wrap the dry battery main body through the layers, and heat-shrink the ends of the outer label protruding to the head and bottom of the dry battery main body, whereby the peripheral edges of the head and bottom of the dry battery main body could be cosmetically coated.

[0003]

Generally, an outer label for a dry battery is produced by vapor-depositing a metal on the back surface of a heat-shrinkable plastic film as a base material, printing a product name or various designs on the surface, In addition, the outer label side that contacts the outer peripheral surface of the unit cell is coated with an adhesive layer, and the printed label side that appears on the surface is coated with a protective layer such as varnish for abrasion resistance. There is. When the dry battery main body is covered by heat-shrinking the dry battery outer label, the shrinkage factor applied to the film varies depending on the amount of the printing ink depending on the color, and thus the outer cover protruding to the head and bottom of the dry battery main body. Since the shrinking conditions vary greatly depending on the various designs of the label edge, under certain constant shrinking conditions, due to the differences in the various designs, the outer label margins are likely to be curled or lifted due to the adhesive variation of the outer label, There is a problem that the shrinking condition has to be changed each time, because not only the appearance is bad but also the outer label may be peeled off to cause a short circuit.

An object of the present invention is to provide an outer label capable of reducing the shrinkage variation of the outer label end even under a certain shrinking condition and providing close adhesion to the surface peripheral edges of the head and bottom of the dry battery body. It is to provide a label exterior dry battery.

[0005]

According to the present invention, in an outer label wound around a cylindrical surface of a dry battery body, at least the upper and lower end surfaces of the outer label do not have a printing layer, or at least the upper and lower end surfaces of the outer label. It is characterized in that the printing ink is partially unevenly distributed to reduce the amount of ink per printing area for printing.

Further, the printing ink is unevenly distributed in a mesh shape or a dot shape (dotted shape) for printing, thereby achieving the above object.

[0007]

As described above, at the end of the heat-shrinkable outer label, the color and the volume of ink change due to the difference in various designs, so that the printing ink is unevenly distributed to reduce the volume of ink per printing area. As a result, it is possible to reduce variations under constant shrinkage conditions. Therefore, a dry battery can be obtained in which the peripheral edges of the outer label ends protruding to the head and bottom of the dry battery main body are stably contracted and adhered closely.

[0008]

EXAMPLES The present invention will be specifically described below based on examples. FIG. 1 shows an embodiment of the present invention. Figure 1
In the above, 1 is a unit cell of a cylindrical alkaline dry battery,
Reference numeral 2 is an exterior label wound around the cylindrical surface of the unit cell 1.
FIG. 2 shows the exterior label of the present invention. The outer label 2 is made of a heat-shrinkable plastic film as a base material, a metal is vapor-deposited on the back side (the side in contact with the unit cell 1) and an adhesive layer is coated, and appropriate printing is performed on the front side and varnish or the like is applied. The protective layer is coated. In the printing on the front surface side, the peripheral edges of the upper and lower end surfaces of the exterior label are printed in a mesh-like pattern in which printing ink is dispersed, as shown in FIG. In addition, FIG. 2B shows that dots of printing ink (dotted dots) are widely dispersed and printed.
As an embodiment different from the embodiment shown in FIGS. 2A and 2B, an outer label having no printing layer on the upper and lower end surfaces of the outer label, that is, having no printing layer at that portion, is used. You may use. FIG. 3 shows a label winding method for the unit cell 1. The outer label 2 is cut to a length obtained by adding an appropriate overlap margin to the length of one winding of the unit cell 1, and the cylindrical surface of the unit cell 1 is wrapped and adhered as shown in FIG. The outer label 2 is heat-shrinked to tightly package the unit cell 1. The width of the outer label 2 is appropriately larger than the height of the cylindrical surface of the unit cell 1, and when the outer label 2 is wrapped around the unit cell 1, the peripheral edges 3 and 4 of the outer label 2 are above and below the cylindrical surface of the unit cell 1. It sticks out. When the outer label 2 is heat-shrinked, the protruding peripheral edges 3 and 4 of the outer label 2 are bent to both end surfaces of the unit cell 1 and are bonded to the unit cell surface, but the printing ink is unevenly distributed and By reducing the volume of ink or by not printing with printing ink on that portion, variations in shrinkage at the time of thermal shrinkage of the peripheral portions 3 and 4 of the outer label 2 are reduced even under certain conditions, and the unit cell 1 Adhesion to both end faces of the was obtained tightly.

[0009]

By using the constitution of the present invention described above,
For outer labels of various designs, variations in shrinkage are reduced even under certain shrinking conditions, the adhesion to the upper and lower peripheral edges of the dry battery body is tight, and the outer label edges are almost not curled or lifted, and the appearance is minimized. In addition to improving the performance, the risk of causing a short circuit failure due to peeling of the outer label is eliminated.

[Brief description of drawings]

FIG. 1 is a diagram showing a state in which an outer label is attached to a dry battery body after heat shrink of the outer label according to the present invention.

FIG. 2 (a) is a diagram showing halftone printing on the peripheral edge of the outer label in the present invention. FIG. 2 (b) is a diagram showing dispersed dot printing on the peripheral edge of the outer label in the present invention.

FIG. 3 is a view showing a state before the outer label is heat-shrinked by winding the outer label in the present invention on a unit cell.

[Explanation of symbols]

1 unit cell 2 Exterior label 3 Exterior label periphery 4 Outer label edge

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-220350 (JP, A) JP-A 63-291355 (JP, A) Actually opened 50-16423 (JP, U) Actually opened 61- 117163 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01M 2/02

Claims (3)

(57) [Claims] 1. An outer label having a heat-shrinkable plastic film as a base material and having a printing layer on its surface is wound around the body of a cylindrical dry battery so that the upper and lower ends of the outer label protrude above and below the body of the dry battery. In the label exterior dry battery, in which the upper and lower ends of the protruding outer label are contracted and closely adhered to the body of the dry battery and the peripheral portions of the upper and lower ends of the body of the dry battery , printing ink is partially applied to the upper and lower end surfaces of the outer label. Print unevenly
A label exterior dry battery with an exterior label printed by reducing the volume of ink per area . 2. The label-covered dry battery according to claim 1, wherein the printing ink is printed on the upper and lower end surfaces of the exterior label in a mesh-like manner. 3. The printing ink is printed on the upper and lower end surfaces of the outer label while being unevenly distributed in a dot shape (dotted shape).
Labeled outer battery.