JP2808070B2 - Self-elastic label and method of mounting the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-stretchable label for mounting a self-stretchable label on a container and a method for mounting the label.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
Is generally equipped with a label 31 on which characters, pictures and the like are printed. This label 31 is made of paper,
It is made of a non-stretchable plastic film.
To the label 31 by rotating the container 30.
Was wound around the container 30.

[0003]

When the label 30 is wound immediately after the container 30 is formed by, for example, blow molding of a synthetic resin, the container 30 is molded immediately after the label 31 is attached, even if the label 31 is in close contact with the container 30. After about 24 to 48 hours, the sheet shrunk by about 1 to 3%, so that the label 31 was loosened or wrinkled.

Further, the body of the container 30 such as various bottles and beer bottles is rarely a perfect cylinder, and the surface thereof has an irregular shape or a gently tapered shape. When attached, the label 31 similarly causes wrinkles and distortion.

[0005] The present invention has been made in view of the above-mentioned conventional problems. By providing a self-stretching property to a label, the label is mounted on, for example, a blow-molded container or a container having a slightly uneven surface. It is an object of the present invention to provide a self-stretchable label that can be attached in a close contact state while preventing wrinkles and loosening even in such a case, and a method for attaching the label.

[0006]

Means for Solving the Problems The present invention has been made as a self-elastic label and a method for mounting the self-elastic label to solve the above-mentioned problems. In a method for mounting a self-stretchable label, in which a label 1 having a synthetic resin film 3 as a base material is mounted on a container 7, one end 1 a of the label 1 is adhered to the container 7 via an adhesive 5. Is wound around a container 7 in a stretched state, and the other end 1b of the label 1 is polymerized on the one end via an adhesive 5, and one end 1a of the polymerized label 1
And press the overlapping portion between the other end 1b.

[0007] The features of the self-stretch label are as follows.
An adhesive 5 for adhering the one end 1a to the surface of the container 7 is attached to one end 1a of the self-stretchable synthetic resin film 3.
Is applied, and at the other end of the synthetic resin film 3,
The adhesive 5 is applied to the surface of the one end 1a so that the synthetic resin film 3 can be wound around the container 7 in the stretched state.

Further, on the inner surface of the synthetic resin film 3 and on a portion where the adhesive 5 is not provided, adhesive layers 10 and 11 which are thinner than the adhesive 5 are provided. It is in.

In addition, on the inner surface of the synthetic resin film 3 and where the adhesive 5 is not provided,
This is due to the provision of the delayed tack adhesive layer 11 in which tackiness is generated by heating and the tackiness is maintained for a predetermined time.

[0010]

According to the present invention, first, one end 1a of the label 1 is set.
Is adhered to a predetermined position of the container 7, and for example, the container 1 is rotated to wind the label 1 around the container 7.
At the time of this winding, the label 1 is set in a slightly expanded state to be tensed.

Further, after the other end 1b of the label 1 is superimposed on the one end 1a, the superposed portion is pressed until the adhesive 5 is cured, so that the label 1 can be securely attached to the container 7. Becomes Even if the surface of the container 7 is uneven or tapered, the label 1 attached to the container 7 is
Expands and contracts along the surface of the
And does not wrinkle or loosen.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is, for example, polyethylene,
A label made of a self-stretchable synthetic resin film 3 having a thickness of about 20 μm to 100 μm and made of polypropylene, polyvinyl chloride, polybutadiene, or the like.
, Characters, pictures, etc. are printed on the inner or outer surface of the film 3 (not shown). The synthetic resin film 3 has a long shape wound in a roll shape, has a self-stretching property in its longitudinal direction, and has a hot-melt adhesive (heat-sensitive adhesive) which is activated by heating on its inner surface. Agent 5 is applied at equal intervals L.

The label 1 is formed by cutting the center of the hot melt adhesive 5 in the synthetic resin film 3 (the position indicated by B in FIG. 1), and its length (interval L) is 1 is provided slightly longer than the circumference of the container 7 to be mounted.

Next, a case in which the label 1 is mounted on a circular container 7 in a plan view immediately after molding, for example, by blow molding will be described. First, the hot melt adhesives 5 provided on both ends of the label 1 are activated by heating.

Next, one end 1a of the label 1 is bonded to the container 7 discharged from the blow molding machine via the hot melt adhesive 5, and the container 7 is moved in the direction of arrow A while the label 1 is tensioned. (See FIG. 1 (b)). This container 7
During the rotation of the label 1, the label 1 is in a state of being elongated by 2 to 10% in the longitudinal direction, and the inner surface thereof is sequentially wound along the container 7 (see FIG. 1C).

Further, the label 1 is wrapped, the other end 1b is polymerized on the surface of the one end 1a via the hot melt adhesive 5, and the joined portion of the both ends 1a, b is joined with the hot melt adhesive by the pressing bar 9 for cooling. Press until 5 cools and solidifies (see FIG. 1 (d)).

When the cooling press bar 9 is separated from the label 1 after the hot-melt adhesive 5 has solidified, the label 1 generates a frictional force between itself and the container 7 by the tightening force due to the self-shrinkage force. It can be attached in a close contact state.

Further, the container 7 formed by blow molding
Will shrink by about 1 to 2% in about 24 to 48 hours after molding, but the label 1 in a tensioned state will shrink following the shrinkage of the container 7 and will not be slackened. Moreover,
Since the label 1 is always kept in a tensed state, there is no possibility that wrinkles will occur.

FIG. 2 shows another embodiment of the present invention. In the embodiment shown in FIG. 2A, the inner surface of the synthetic resin film 3 and the portion where the adhesive 5 is not provided are: A hot-melt adhesive layer 10 thinner than the adhesive 5 is provided on the entire inner surface or a part of the synthetic resin film 3.
The cutting position of the synthetic resin film 3 is shown in FIG.
As shown at position B, the hot melt adhesive 5 is not provided on one end 1a of the label 1, but is provided only on the other end 1b.

The container 7 has a rectangular shape in a plan view, and one end of the label 1 is adhered to the surface of the container 7 via a hot melt adhesive layer 10, and the labels 1 are sequentially stacked in the same manner as described above. 7, and the other end 1 b is bonded to the one end 1 a via the hot melt adhesive 5.

In this embodiment, a hot melt adhesive layer 10 is provided on the inner surface of the label 1 in addition to the adhesive 5.
In particular, it is most suitable for bringing the label 1 into close contact with the uneven portion of the container 7 or the portion of the tapered gentle three-dimensional curved surface.

FIG. 3 shows still another embodiment of the present invention. In the above embodiment, the hot melt adhesive layer 10 is provided. However, a delayed tack adhesive layer 11 is provided in place of the hot melt adhesive layer 10. It is a thing. This delayed tack adhesive is not tacky at room temperature, but becomes tacky when heated,
It is such that it lasts for a considerable time after cooling.

Therefore, the stretch label 1 is most suitable for being mounted on a container 7 formed by, for example, blow molding. That is, the container 7 formed by blow molding
Shrinks over time as described above,
The hot melt adhesive 5 of the label 1 is solidified by cooling and adheres both ends of the label 1 to form a delayed tack adhesive layer.
11 shows that the adhesive force is still maintained after the hot melt adhesive 5 is solidified, so that the label 1 can follow the shrinkage of the container 7 in accordance with the shrinkage of the container 7, and the wrinkles and looseness do not occur, and the close contact state is obtained. Can be maintained.

After the delayed tack adhesive is cured, the label 1 is adhered and fixed over the entire periphery of the container 7, so that the label 1 does not shift.

The present invention is not limited to the above embodiments. For example, as described above, the synthetic resin film used in the present invention does not need particularly large self-stretching (elastic stretching) and needs to be 3 to 10 times. It is sufficient that the elastic restoring force (contracting force) when% elongation is good. Further, the container 7 is exemplified by a blow-molded product, but may be formed by other means, and the material thereof can be freely set such as various synthetic resins, glass bottles, metal cans and the like.

In each of the above embodiments, the container 7
When the label 1 is wound around the container 7, the container 7 is rotated. However, the container 7 may be fixed, and the other end 1b side of the label 1 may be moved in the circumferential direction of the container 7 and wound.

Further, the adhesive is not limited to the above-mentioned hot melt adhesive or delayed tack adhesive, and the adhesive layer provided on the inner surface of the film 3 is different from the adhesive 5 provided on both ends of the label 1. 10 and 11 do not necessarily have to be thin, but can be provided equally.

[0028]

As described above, according to the present invention, an adhesive for adhering one end to the surface of a container is applied to one end of a synthetic resin film having self-stretchability. At the other end, an adhesive that is adhered to the surface of the one end is applied so that the synthetic resin film can be wound around the container in an extended state. The provided label is always in a tension state, and can be brought into close contact with the surface of the container 7.

Therefore, especially when the label is mounted on a blow-molded container or a container having a slightly uneven surface,
Labels can be shrunk by following the ones that shrink and deform after molding, such as blow-molded containers.This makes it possible to effectively maintain the label's close contact with the container, preventing wrinkles and loosening. There is an advantage that it can be attached to a container.

In the method of mounting a self-stretchable label according to the present invention, the label having the above-mentioned self-stretchability can be further easily and reliably mounted on a container, and a series of operations can be easily automated. Can be.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention.
(B)-(d) are sectional plane views showing the step of winding the label around the container.

FIG. 2 shows another embodiment of the present invention, in which (a) is a sectional view of a main part showing a synthetic resin film and a hot melt adhesive,
(B) is a sectional plan view showing a step of winding the label around the container.

FIGS. 3A and 3B show still another embodiment of the present invention, wherein FIG. 3A is a sectional view of a main part showing a synthetic resin film and a hot melt adhesive, and FIG. 3B is a label cut to a predetermined length. FIG.

4A and 4B show a conventional example, wherein FIG. 4A is a perspective view of a state in which a label is wound around a container, and FIG. 4B is a perspective view of the state in which the label is wound.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Label, 1a ... One end, 1b ... Other end, 3 ... Synthetic resin film, 5 ... Adhesive, 7 ... Container, 10 ... Adhesive layer, 11 ... Delayed tack adhesive layer

Continuation of front page (58) Fields investigated (Int.Cl. ⁶ , DB name) G09F 3/10 B65C 3/16 G09F 3/06

Claims (5)

(57) [Claims] 1. A method for mounting a self-stretchable label, wherein a label (1) based on a self-stretchable synthetic resin film (3) as a base material is mounted on a container (7), wherein one end of the label (1) is provided. (1a) is adhered to the surface of the container (7) via an adhesive, and the label (1) is wound around the container (7) with the label (1) extended, and the other end 1b of the label (1) is connected to the one end side. A method for mounting a self-stretch label, characterized in that the label (1) is polymerized via an adhesive (5), and a polymerized portion between one end (1a) and the other end (1b) of the polymerized label (1) is pressed. 2. The method according to claim 1, wherein the adhesive (5) for bonding one end (1a) and the other end (1b) of the label (1) is a hot melt adhesive. . 3. An adhesive (5) for bonding the one end (1a) to the surface of the container (7) is applied to one end (1a) of the self-stretchable synthetic resin film (3). ,and,
At the other end of the synthetic resin film (3), an adhesive bonded to the surface of the one end (1a) so that the synthetic resin film (3) can be wound around the container (7) in an extended state. (5) A self-stretch label, wherein the label is applied. 4. An adhesive layer (10) thinner than the adhesive (5) is provided on an inner surface of the synthetic resin film (3) and on a portion where the adhesive (5) is not provided. , (1
The self-stretch label according to claim 3, wherein 1) is provided. 5. A delayed tack in which an inner surface of the synthetic resin film (3), on which the adhesive (5) is not provided, becomes tacky by heating and the tackiness is maintained for a predetermined time. The self-stretch label according to claim 3, further comprising an adhesive layer (11).