JP3243717B2 - Single-leaf label for whole circumference - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-wrapping label for whole circumference applicable to various labeling machines.

[0002]

2. Description of the Related Art In general, an all-around-wound label is provided with adhesiveness on the back surface of the label, affixed to the peripheral surface of the container in order from the starting end of the label, and affixing the end of the label to the starting end. Recently, recycling of used containers such as PET bottles has been proposed from the viewpoint of environmental problems. When recycling the container, it is necessary to peel off the label.

[0003]

However, the above-described label sticking technique has the following problems.

<A> Since the label is firmly adhered to the peripheral surface of the container via the adhesive, it is difficult to peel off the label and remove it. Particularly when the label is made of paper, it is extremely difficult to peel the label easily and cleanly.

<B> In order to enhance the releasability of the label, it is conceivable to use an adhesive having a low adhesive strength. Although this method is useful for improving the releasability of the label, it has a problem that the overlapped portion of the label is inadvertently peeled off during the distribution process of the product. As described above, in the conventional sticking technique, the adhesiveness and the peelability of the label are in conflict with each other, and it is not possible to satisfy both properties at the same time.

<C> Further, as a label that does not use an adhesive, a tubular label having a seamless structure that is mounted on a container is known. This type of tubular label is more expensive than a sheet label, and because there are no sticking points at both ends of the label, the label must be cut off and removed. In the case of a soft container, there is a risk of damaging the container body.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a full-wrap sheet-fed label capable of simultaneously satisfying the adhesiveness and peelability of the label. It is in.

It is still another object of the present invention to provide a full-wrap sheet label applicable to all kinds of labeling machines.

[0009]

The invention according to claim 1 is
After adhering the back end of the sheet-shaped label to the peripheral surface of the container, wrap the label around the peripheral surface of the container, and superimpose the back end of the label with adhesive on the front surface of the label to attach the entire surface. In a sheet-fed label, at a position excluding the end of the back surface of the label material, a hard-adhesive layer having an adhesive property to the adhesive before curing and a peeling property to the cured adhesive is formed, This is a single-leaf label for all-around winding, which is formed by laminating a container adhesive layer on a layer.

[0010] According to a second aspect of the present invention, in the full-wrap sheet-fed label according to the first aspect, the container adhesive layer is a heat-sensitive or pressure-sensitive adhesive. This is a single-sheet label.

According to a third aspect of the present invention, in the sheet label according to the first or second aspect, the label adhesive layer is a heat-sensitive or pressure-sensitive adhesive. It is a single-leaf label for the entire circumference.

[0012]

[0013]

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

<A> Single-Layer Label for All-around Rolling In FIG. 1, reference numeral 10 denotes a container made of a material such as paper, resin, glass, and ceramics. Reference numeral 20 denotes a sheet-like single-sheet label (hereinafter, referred to as a label), which is set to have a length slightly longer than the outer periphery of the container 10 so that the start and end of the label 20 can be superimposed and attached.

The label 20 is made of a known material such as a known paper or a resin (including a heat-shrinkable resin). The label 20 is stored in a magazine in advance and is of a type in which a single sheet is released to a labeling machine or a tape. Continuously adhered to the mount,
This is a label that can be peeled off by winding the backing paper at an acute angle.

As shown in FIG. 2, a container adhesive layer 23 is formed on the starting edge of the rear surface 21 of the label 20 with a hard adhesive layer 22 interposed therebetween, and a label adhesive layer 24 is formed on the terminal edge of the rear surface 21.
Is formed. The hard adhesive layer 22 may be formed on a part of the back surface 21 or on the entire surface except for the label adhesive layer 24.

Each of the hard adhesive layer 22, the container adhesive layer 23, and the label adhesive layer 24 may be formed on the label 20 in advance, or may be formed sequentially in the course of the label conveying path in the labeling machine.

<B> Difficult-to-Adhesion Layer The difficult-to-adhesion layer 22 is formed by directly adhering an ultra-thin resin film or the like to the label material, or by applying a hard-adhesion treatment such as printing a soft-melting fluororesin or the like. .

The hard-adhesive layer 22 only needs to have a surface treatment so as to have adhesiveness to the adhesive in a molten state and to be easily peeled off from the cured adhesive.

In this embodiment, the label 20 is formed continuously in the width direction of the label 20. However, the label 20 may be formed in a partial range in accordance with the formation range of the container adhesive layer 23.

<C> Adhesive Layer The container adhesive layer 23 and the label adhesive layer 24 are portions provided with an adhesive property, and various known adhesives and pastes including a heat-sensitive or pressure-sensitive adhesive are applied by applying means or printing means. It is formed.

FIG. 3 shows a cross section of the label start end.
(A) is a method in which an adhesive is applied to the hard-
3B shows an example in which a heat-sensitive or pressure-sensitive capsule in which an adhesive is sealed is formed on the surface of the hardly-adhesive layer 22. The label adhesive layer 24 is formed directly on the end of the back surface 21 of the label 20.

<D> Regarding adhesiveness and peelability of label In the past, in order to securely adhere the label to the container, high adhesiveness was applied to the beginning and end of the label, respectively.

On the other hand, according to the present invention, the overlapped portions at both ends of the label 20 are provided with high adhesiveness and adhered.
A suitable adhesiveness and releasability were combined between the beginning of the back surface 21 and the container 10.

As a means for making the adhesive property and the peeling property coexist at the beginning of the back surface 21 of the label 20, a laminated structure in which a container adhesive layer 23 is formed via a hard adhesive layer 22 is adopted. That is, while securing a proper adhesiveness based on the high adhesiveness of the container adhesive layer 23 itself, peeling between the two layers 22 and 23 after the container adhesive layer 23 is cured based on the poor adhesiveness of the hard adhesive layer 22. Property can be imparted.

It is apt to think that the use of an adhesive having a low adhesive performance will reduce the peeling force between the label and the container. However, this low adhesiveness is a performance before the adhesive is cured. When the agent cures, the label is firmly adhered to the container, resulting in poor releasability of the label. In addition, when an adhesive having low adhesive performance is used, there is a problem in that a sufficient adhesive force cannot be secured when the label start end is attached to the container, and the label cannot be wound.

By forming the container adhesive layer 23 having high adhesiveness at the start end of the label 20 via the hard adhesive layer 22 as in the present invention, it is possible to secure a proper adhesiveness at the start end of the label 20 and
Peelability after curing of the adhesive can be ensured. In other words, the adhesive force (temporary adhesive force) that does not allow the label 20 to slide between the start end of the label 20 and the container 10 only for a short time until the overlapping of the edges of the label 20 is completed.

[0028]

Next, a method of attaching the label 20 will be described.

<A> Attachment of Label Start End In a labeling machine (not shown), each label 20 is transferred toward the attaching stage in a state where negative pressure is applied to the peripheral surface of the attaching drum.

During the transfer process, the adhesive layers 23, 2 formed at the start and end of the back surface 21 of the label 20 in the width direction thereof.
4 is provided with adhesiveness. The adhesiveness is provided by applying an adhesive, heating, or the like. The container 10 is transferred to a sticking stage by a screw conveyor or the like.

When the start ends of the container 10 and the label 20 reach the sticking stage, the container adhesive layer 23 at the start end of the label 20 is stuck on the peripheral surface of the body 11 of the rotating container 10 as shown in FIG.

The container adhesive layer 23 adheres to the peripheral surface of the container 10 with a high adhesive force, and also maintains an adhesive state to the hardly adherent layer 22 with an appropriate adhesive force. Since the start end of the back surface 21 of the label 20 is temporarily bonded to the container, the label 10 after the start end winds around the peripheral surface of the body 11 of the container 10 which rotates sequentially.

<B> Attachment of Label End As shown in FIG. 5, in the state where the starting end of the label 20 is temporarily adhered to the peripheral surface of the container 10 with the laminate of the hard adhesive layer 22 and the container adhesive layer 23, The end of the back surface 21 of the label 20 is the front surface 25
Of the label adhesive layer 24, the label adhesive layer 24
To complete the entire winding of the label 20.

Since both ends of the label 20 are firmly adhered to each other via the label adhesive layer 24, both ends of the label 20 do not peel off during the distribution process of goods.

<C> Peeling of the Label As described above, both ends of the label 20 are securely adhered to each other through the label adhesive layer 24. However, between the start end of the label 20 and the peripheral surface of the container 10, the container adhesive layer 23 is formed. Is in a state where it is easily peeled off from the hard-to-adhesive layer 22 with the curing.

Therefore, for the purpose of recycling the container 10, the label 20 is removed from the container 10 by simply cutting off a part of the cylindrical label 20 or peeling off the overlapping portions at both ends of the label 20 to form a sheet. Can be easily peeled. The label 20 peels off between the hardened container adhesive layer 23 and the hardened adhesive layer 22 only by applying a small peeling force.

FIG. 6 shows the state of the container 10 after the label has been peeled off. The container adhesive layer 23 remaining on the peripheral surface of the container 10 is
What is necessary is just to remove with a solvent etc.

[0038]

[Embodiment 2] In Embodiment 1 described above, a case was described in which a laminated body of the hard adhesive layer 22 and the container adhesive layer 23 was formed at the starting edge of the back surface of the label 20, but the embodiment shown in FIG. It may be formed.

FIG. 7A shows the case where the laminate is formed on the upper and lower edges of the label 20, B shows the case where it is formed on the starting end and the upper and lower edges of the label 20, and C shows the case where the laminate is dotted on the back surface of the label 20. This is shown. The form of formation of the laminate is a container 10
The selection may be made in consideration of the purpose of use.

[0040]

According to the present invention, the following effects can be obtained. <B> By laminating the container adhesive layer on the hard adhesive layer formed on the back surface of the label, it is possible to secure the appropriate adhesiveness between the container and the label and apply the label, and after the adhesive is cured. Can be easily peeled from the container with a small peeling force. For this reason, it is possible to simultaneously satisfy both the properties of adhesion at the time of sticking a label, which has been considered difficult to achieve, and the releasability between the label and the container after curing of the adhesive.

<B> Even if the label is made of paper that is easily broken, it can be removed without leaving it in the container.

<C> Although a cylindrical label having a seamless structure is expensive, even a low-cost sheet label can be affixed with a substantially similar structure.

<D> It can be applied to labels of various materials such as paper, resin, heat-shrinkable resin and the like, and can be applied to various labeling machines, so that it is versatile. In particular, if a label is manufactured using a heat-sensitive or pressure-sensitive adhesive for the adhesive layer,
There is no need to upgrade the machine.

<E> The hard-to-adhesion layer requires only a simple process of hard-to-adhere the back surface of the label, and is easy to manufacture.

[Brief description of the drawings]

FIG. 1 is an explanatory view according to Embodiment 1 of the present invention, and is a perspective view of a container when a label is attached.

FIG. 2 is a front view of the back surface of the label with the middle omitted.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a cross-sectional view of a bonding portion between a label start end and a container.

FIG. 5 is a cross-sectional view of the overlapped portion where both ends of the label are attached.

FIG. 6 is a sectional view of the container after the label is peeled off.

FIG. 7 is a front view of the back side of the label showing another label example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Container 20 Label 21 Back side of label 22 Difficult adhesion layer 23 Container adhesion layer 24 Label adhesion layer 25 Label surface

Continuation of the front page (56) References JP-A-60-183343 (JP, A) JP-A-5-46095 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 23 / 00 B65D 25/20 G09F 3/10

Claims (3)

(57) [Claims] Claims 1. A sheet-shaped label having a back surface starting end adhered to a peripheral surface of a container, and then the label is wound around the container peripheral surface, and the back end of the label provided with the adhesive property is superimposed on the label front surface and adhered. In the sheet label for all-around winding, a hard-adhesive layer that has adhesiveness to the adhesive before curing and peelability to the cured adhesive is formed at a position except for the end of the back surface of the label material. A single-sheet label for full circumference winding, wherein a container adhesive layer is laminated on the hard adhesive layer. 2. The full-circle sheet label according to claim 1, wherein the container adhesive layer is a heat-sensitive or pressure-sensitive adhesive. 3. The sheet for full-circle winding according to claim 1, wherein the label adhesive layer is a heat-sensitive or pressure-sensitive adhesive. label.