JPS6099826A - Method of labelling vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method for attaching a label to a container.

Labels that are attached to the surface of packaging containers to display product information, etc. include single-point tack labels that are affixed with adhesive, and labels that are attached to a tube of heat-shrinkable synthetic resin film around the container. , a label made by heat-shrinking a film and using its shrinkage force to adhere tightly to the outer circumferential surface of the container, or a tube of self-stretchable stretch film is forcibly stretched to expand its diameter and fit around the container; There are some that utilize the shrinkage stress of returning to the diameter to tightly adhere to the outer circumferential surface of the container.

These labels can be attached to the entire surface of a flat surface or a circumferential surface that does not have a taper, and there is no particular difficulty in achieving a beautiful fit without unevenness or bulges. . However, for example, in Figure 1, for a convex curved surface (work 1) that is curved in both the circumferential direction and the axial direction, such as near the neck of the bottle (''), the tank label (a) is pasted at one point. Even if an attempt is made to attach the label, the entire surface of the label cannot be brought into close contact with the curved surface, resulting in localized bulges and unevenness (A) as shown in the figure. 1. Even when attaching a tubular label made of a heat-shrinkable synthetic resin film, when the label is heat-shrinked, the label (b) rises as it shrinks, as shown in Fig. The housing is displaced from its position, and the upper part of the label becomes loose (b), making it impossible to obtain the desired mounting pattern. Similar misalignment occurs in the application of self-stretching film tubular labels. Even in the case of a rectangular container like the one shown in Figure 13, which does not fit on a curved surface such as a bottle, when the tubular label (b) is attached, it will fit in the center of the side, compared to the part along the ridgeline of the corner. This results in a "sink mark" (c) where the tube width is narrow near the area, and the label becomes deformed.

As a method for preventing the above-mentioned label from being in poor adhesion or misalignment, a method may be adopted in which the label is preformed in a form that corresponds to the surface shape of the target container. Preforming can prevent the tubular label from shifting, but it still tends to fall off the container after being attached. Moreover, preforming requires a lot of cost and time, so it is not a good idea. Another method for preventing the tubular label from shifting is to provide irregularities on the curved surface of the bottle and to lock the tubular label thereto, but this is difficult to achieve as a general measure.

The present invention solves the above problems.

The label attaching method of the present invention involves attaching a label made of a heat-shrinkable synthetic resin film (hereinafter referred to as "heat-shrinkable film") to a desired position on the container surface using an adhesive applied to the back side. The label is characterized in that it prevents the label from shifting, and then heat-shrinks the label by blowing hot air to eliminate swelling and unevenness of the label, allowing it to adhere to a predetermined position on the surface of the container.

To explain the present invention, Fig. 1 shows an example of a one-piece tank label, (2) shows a heat-shrinkable film label,
(3) is an adhesive applied to the peripheral edge of the back side of the label. According to the present invention, the uncut tack label (A) is affixed to a desired portion of the container using the adhesive on the back side. When it is still attached, it swells and exhibits unevenness as shown in FIG. 11 above. Next, as shown in Figure 3, hot air (f
When the film is heat-shrinked by blowing i), the bulges and irregularities are eliminated as a result of the shrinkage, and the film is finished in a state in which it closely adheres to the curved surface of the container (1) as shown in the figure.

FIG. 2 shows an example of a tubular label, in which an adhesive (3) is applied along the lower edge of the back surface of the film. In this case, as shown in FIG.
) and adhere the lower edge to the container surface with adhesive (3), and then heat shrink the film with hot air blown from the hot air outlet (2o) surrounding the label. As shown in FIG. 5, it is possible to achieve a state in which it is attached tightly to a predetermined position without causing any lifting (positional displacement) caused by this.

When attaching a tubular label to a trench or square container, use a label with adhesive (3, 3) applied to the top and bottom edges of the back of the tube, as shown in Figure 6. , the top and bottom edges of the tube at each adhesive layer ()
) If the film is heat-shrinked while being adhered (3') to the surface of the film, a mounting configuration having a width of 14H in the circumferential direction without causing sink marks as shown in FIG. 13 can be obtained.

The base film of the label is a heat-shrinkable film commonly used for labels, such as polyvinyl chloride, polystyrene, or polyester film having a heat shrinkage rate of about 50% or more. There are two types of heat-shrinkable films: uniaxially stretched and biaxially stretched. For the Notan label shown in FIG. 1, it is preferable to use a biaxially stretched film in order to cause heat shrinkage in the circumferential and axial directions of the bottle. For tubular labels such as those shown in Figure 2, the purpose is achieved as long as the film shrinks in heat along the circumferential direction, so it is not necessary to use a biaxially stretched film, but rather a uniaxially stretched film whose shrinkage direction coincides with the circumferential direction of the container. For example, it is also preferable in that sink marks in the axial direction are prevented.

The adhesive may be any suitable pressure-sensitive adhesive used for pasting this type of film. The manner in which the adhesive is applied is not limited to the illustrated example, but depending on the shape of the label, it may be applied to the entire back surface, or to a portion or multiple places, in continuous strips, intermittently, in the form of bands, lines, or scattered dots. Just apply it. for example,
The one-point tack label (A) and tubular label (
Instead of applying the adhesive on the edges in B) continuously over the entire circumference, you can just apply it at multiple locations at appropriate intervals. Moreover, if necessary, it may be applied, for example, in dots on the inside of the edges in addition to the edges.

The attachment of the label according to the present invention can be carried out continuously while unwinding the long strip-shaped film from the original film roll. Figure 7 shows an example of the process of attaching a tube-shaped label.
) is wound horizontally around the container (]) and cut to the required circumference to form a tube (B), and the formed tube is attached to the surface of the container. . For this reason, in addition to the adhesive (3) for pasting the tube, the film (F) also contains an adhesive (4) for polymerizing and adhering (rolling) both edges of the cut film and forming it into a tube. It is applied at intervals corresponding to the circumference. Figure 8 shows a film strip (F) being cut into a predetermined tube width while being unwound from an original film roll (box) having a width corresponding to the tube circumference into a container (1) located below. A tube (B) is formed in place of the container and is attached to the surface of the container. The tube is formed by bonding both ends of the film with an adhesive (4) applied along the edge of the film. ) is attached to the container. As shown in Figure 9, a long film (F) coated with adhesives (3) and (4) is cut out into a desired shape and wound around the size of the container (1) to form a tube (B). , or may be attached to the surface of the container. On the other hand, in the case of one-point adhesive tank labels (A, ), for example, a large number of labels of the desired shape are defined by cutting lines such as slits on a film that is polymerized and adhered to a strip of release paper, and these are cut out as shown in Figure 9. While unwinding from the original roll (R), wrap each label (A) with release paper (
T) It can be peeled off from the side and sequentially attached to the container surface using the adhesive on the back of the label. In either case, the adhesives (3) and (4) on the back of the labels (A, r#iJ) may be painted F. After the label is affixed to the container surface, the label is heat-shrinked as shown in FIGS. 3 and 4 to complete the attachment operation.

The method of the present invention uses a heat-shrinkable film, adheres it to the container surface with an adhesive, and performs a heat-shrinking treatment. Attach single-point tank labels or tubular labels to circumferential surfaces without causing bulges, unevenness, or misalignment, and without sink marks on tapered or square containers. be able to.

d) Therefore, there is no need for the conventional process of preforming the label to fit it along the surface of the target container, and installation can be completed with simple operations such as pasting and blowing hot air, simplifying the process. It is also advantageous in terms of cost. Even if a label is preformed, it is not easy to make it completely adhere to a curved surface, but in the present invention, it can be made to adhere well enough by heat shrinking, and the label is less distorted.

(11D Since the label is fixed to the container surface with an adhesive, the tubular label will not peel off or fall off even if the container surface is uneven.

(1) When attaching a tube-shaped label, if you continuously unwind a long raw film and form the tube and attach it to the container at the same time, the process from forming the tube to attaching the label can be completed in one continuous process. can do.

(V) If a foaming agent or the like is mixed with the adhesive on the back of the film to increase the thickness of the adhesive layer and provide a buffering effect, it will be effective in preventing damage to containers such as glass bottles.

(vl) If the adhesive layer is left on the container surface when the label is peeled off, the remaining adhesive will serve as a mark, which will help prevent counterfeiting such as when the label is peeled off. . this? It is also effective to color the adhesive.

Incidentally, the present invention can also be used for attaching labels to small articles as shown in FIGS. 14 and 15. For example, accurately align the heat-shrinkable film (2) to an article (M) such as a battery, can, or bottle, wrap the article, and wrap both ends (21°21) of the film with hot air C.
When wrapping both ends of an article by heat shrinking with JJ), it is difficult to align with the normal method and the article tends to be misaligned, but it is possible to apply adhesive to the entire or partial back side of the film. The pails are easily aligned and provide accurate mounting.

Even when a plurality of articles are stacked and a film is attached as shown in FIG. 15, it is easy to set the stacking position and shape of the articles. If the film (2) is provided with perforations (6) as appropriate, the seal can be easily broken during use.

[Brief explanation of drawings]

FIGS. 1 and 2 are perspective views showing examples of labels used in the present invention, FIGS. 3 and 4 are views showing examples of heat shrink treatment of labels in the present invention, and FIGS. The figures are external views illustrating the label mounting mode according to the present invention, Figures 7 to 0 are diagrams illustrating examples of label mounting operations, and Figures 11 to 13 are external views of conventional label mounting modes; 14 and 15 are perspective views showing other examples of label attachment. 1: container, 2: heat-shrinkable film, g, 4: adhesive. Agent Patent Attorney Shinhe Miyazaki Figure 5-mV6 Figure 11 Figure 12 Figure 13 Procedural Amendments Date of February 77, 1980 Mr. Kazuo Wakasugi, Commissioner of the Patent Office ■, Indication of the case 1988 Patent Application No. 203502 2. Title of the invention: Method for attaching a label to a container 3. Relationship with the case by the person making the amendment: Patent applicant 4. Agent 5. Date of the amendment order (initiated) 6. Inventions increased by the amendment. Number of items None 76 Subject of amendment 8, Contents of amendment [1] As shown in the appendix in the "Scope of Claims" column. [2] Column “Detailed Description of the Invention” (1) Delete “coated on the back side” at the end of page 3 of the specification. (2) In the 4th line immediately below No. 6 of the specification, the following information was added after "Just apply it.""Instead of applying the adhesive to the back of the label, the It may be applied to designated areas."(That's all) (Attachment) Claims ``(1) A label made of a heat-shrinkable synthetic resin film ■ After being affixed to a predetermined position on the surface of a container with an adhesive, the label is blown with hot air, etc. A method for attaching a label to a container, which is characterized by attaching the label to the container surface by heat-shrinking the label.

Claims (1)

[Claims] (1) After affixing a label made of heat-shrinkable synthetic resin film to a predetermined position on the container surface using an adhesive coated on the back, the label is heat-shrinked by blowing hot air onto the container surface. A method for attaching a label to a container, characterized by attaching the label to a container.