JP2003029640A - Label for winding full circumference and roll label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily remove a label from a container after used. SOLUTION: The label for winding the full circumference has a pressure sensitive adhesive layer (1) on the back face in which the pressure sensitive adhesive layer (1a) at one end (2) is to be adhered to a container and the pressure sensitive adhesive layer (1b) at the other end is to be overlapped and adhered to the first end (2). At least the other end (3) has the top end part (4) having no pressure sensitive adhesive layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for recycling containers and is capable of being easily peeled off after use, and a label for whole circumference winding by cutting a predetermined position. The present invention relates to roll labels that can be manufactured.

[0002]

2. Description of the Related Art Various containers such as PET bottles (hereinafter referred to as PET bottles) are used to convey information such as product names, precautions for use, indications on contents, protection of container damage, and designability. From the point, various labels are usually attached to the container.

In recent years, from the viewpoint of reducing the amount of waste and effectively utilizing resources, the movement to recycle used containers has become established. In order to recycle the container, it is desirable that the label attached to the container can be easily separated, but it is difficult to peel off the attached label as it is, so it has been proposed to provide perforations on the label. There is.

[0004]

However, providing perforations on the label increases the number of working steps, and since the perforations are weaker, the labels are torn due to vibration during transportation. When a roll label with perforations is attached to a container with an automated high-speed labeler, the label tends to tear from the perforated portion due to the tension applied when the roll label is wound around the container.

The object of the present invention is to provide a full circumference winding without increasing the number of working steps, the above-mentioned problems do not occur during transportation or pasting with a conventional high speed labeler, and can be easily peeled off after use. To provide a label.

[0006]

The present invention has a pressure-sensitive adhesive layer (1) on the back surface of a label, and the pressure-sensitive adhesive layer (1) at one end (2).
a) is a container, and the pressure-sensitive adhesive layer (1b) of the other end (3) is polymerized and stuck to one end (2), and at least the other end (3) has a pressure-sensitive adhesive layer. The present invention relates to a label for complete winding, which has an outermost end portion (4).

Further, according to the present invention, the pressure-sensitive adhesive layers (1a) and (1b) are respectively formed on the back surface of the label across a plurality of label cutting planned positions which are present at intervals of the label circumference, and there is no pressure-sensitive adhesive layer. The outermost portion (4) is sandwiched between the adhesive layers (1a) and (1b) adjacent to each other across the label cutting planned position, and is formed on one side or both sides of the planned cutting position. About the roll label to do.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The label for all-round winding of the present invention can be obtained by cutting a roll label at a predetermined cutting position. The entire circumference label is set to have a dimension slightly longer than the outer circumference of the container so that one end and the other end can be overlapped and attached, and the interval between the planned cutting positions is set to have such a dimension.

The material for the full-wrap label and the roll label is not particularly limited, and examples thereof include stretched and non-stretched films made of various resins such as polyethylene, nylon, polystyrene, polypropylene and polyester. . The label may be heat shrinkable.
Among these, biaxially oriented polypropylene and biaxially oriented polyester films are particularly preferable from the viewpoints of transparency, gloss, and appropriate elasticity.

Examples of the adhesive used in the present invention include:
Examples thereof include polybutadiene, polyisobrene, ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer, and mixtures thereof. Among these, the ethylene-vinyl acetate copolymer is particularly preferable because the peel strength with the label surface and the peel strength with the container can be easily controlled by the thickness of the adhesive and the odor is small. Among the ethylene-vinyl acetate copolymers, those having a vinyl acetate content of 25 to 35 mol% and a melt index of 5 to 200 are more preferable.

The method of forming the pressure-sensitive adhesive layer on the back surface of the label is not particularly limited, and known methods such as an extrusion method, various coating methods and various printing methods may be used. Especially, the method by gravure printing is preferable.

Examples of the material of the container include plastic such as polyester (for example, PET), glass, paper, pottery and the like.

In the label for all-around winding, the pressure-sensitive adhesive layer (1
Between a) and the pressure-sensitive adhesive layer (1b), it is not necessary to apply the pressure-sensitive adhesive, and the pressure-sensitive adhesive may be applied thinner than the pressure-sensitive adhesive layer so as not to be displaced by the tension when the label is wound. . The thickness of the adhesive layers (1a) and (1b) is not particularly limited as long as the label adheres to the container and varies depending on the type of the adhesive, the material of the label and the container, and the like, but is, for example, 3 to 50 μm, preferably 5 ˜20 μm, and the portion between the adhesive layer (1a) and the adhesive layer (1b) is 25 μm or less, preferably 10 μm or less.

The shape of the end portion (4) without the adhesive layer is
As shown in FIGS. 3a to 3d, it may be transverse in the width direction (FIGS. 3a and 3c), and may have an arbitrary shape (for example, a triangle (FIGS. 3b and d)) or a circle (FIGS. 3b)). The endmost portion (4) may be formed on one side or both sides of the planned cutting position.

Embodiments of the present invention will be described more specifically with reference to the drawings. 1 and 2 are a cross-sectional view and a perspective view showing an embodiment of a label for winding all around the present invention. In FIG. 1, one end (2) is adhered to the container (5) via an adhesive layer (1a), the label is wound along the surface of the container (5), and the other end (3) is one end. Is polymerized on the surface of the via the adhesive layer (1b). Further, the outermost portion (4) of the label has a portion without an adhesive layer, and particularly the other end portion (3)
The part without the adhesive layer at the end has a slight curling up because it is not joined to the label surface. When peeling the label from the container, pick up this rolled up part,
The label can be easily peeled from the container by winding the label in the opposite direction.

For the label for all-round winding, a tape-shaped label material is continuously drawn from a roll label mounted on a labeling machine (not shown) and cut into a predetermined label size by a cutter device (not shown). What was done can be used.

Further, the adhesive layers (1a) and (1b) can be formed during the transfer process of the labeling machine or can be preformed on the label material of the roll label.

In one embodiment of the labeling machine, the cut and manufactured labels are transferred to the application stage while being sucked by the negative pressure on the peripheral surface of the application drum. The container (5) is transferred to a sticking stage by a screw conveyor or the like. When the container (5) and one end (2) of the label reach the application stage, the adhesive layer (1) at one end of the label is attached to the peripheral surface of the body of the rotating container (5).
a) sticks.

Adhesive layer (1a) on one end (2) of the label
Is adhered to the container, so that from one end to the other end (3)
When the adhesive layer (1b) on the back surface of the other end portion (3) is polymerized with the surface of the one end portion (2) when the label of the label is wrapped around the peripheral surface of the body portion 11 of the container (5), the entire circumference of the label is rotated. Complete the winding.

[Brief description of drawings]

FIG. 1 is a perspective view showing a process of winding an all-round winding label of the present invention around a container.

FIG. 2 is a cross-sectional view showing a state in which a label is wrapped around a container.

FIG. 3 is a diagram showing a form of a label for all-around winding.

Continued front page    (72) Inventor Tomonori Tani             Gunze packaging system, No. 503, Giga Town, Moriyama City, Shiga Prefecture             Stem Co., Ltd. Moriyama Factory Technical Development Section F term (reference) 3E075 BA83 CA02 DB12 DD02 DD45                       DE23 GA04                 4J004 AA05 AA07 AA09 AA10 AB01                       CA03 CA04 CA06 CC02 CE02                       CE03 EA06 FA01 FA04                 4J040 CA051 DA051 DA081 DA141                       JB09 LA01

Claims (4)

[Claims] 1. A label has a pressure-sensitive adhesive layer (1) on the back surface, and the pressure-sensitive adhesive layer (1a) at one end (2) is in a container and the other end (3).
In the label for circumferential winding in which the pressure-sensitive adhesive layer (1b) of 1 is polymerized and stuck to one end (2), at least the other end (3) has an endmost part (4) having no pressure-sensitive adhesive layer. A label for all-round winding. 2. The label for winding around the entire circumference according to claim 1, wherein the outermost portion (4) having no adhesive layer traverses in the width direction. 3. A pressure-sensitive adhesive layer (1) is provided on the back surface of the label across a plurality of planned label cutting positions at intervals of the label circumference.
a) and (1b) are respectively formed, and the outermost portion (4) having no adhesive layer is sandwiched between the adjacent adhesive layers (1a) and (1b) across the label cutting planned position, and A roll label formed on one side or both sides of a planned cutting position. 4. The roll label according to claim 3, wherein the outermost portion (4) having no adhesive layer traverses in the width direction.