JPH0548218Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a support for display labels on net containers, and is particularly suitable for use on the surfaces of net-like containers such as polyethylene net bags, for which it has been difficult to use adhesive labels in the past. The present invention relates to a support for a display label, which allows a label to be attached reliably and easily.

[Conventional technology and issues to be solved]

Nets made of synthetic resin such as polyethylene are usually easily and inexpensively manufactured as cylindrical mesh bags by extruding molten polyethylene resin through a rotary extrusion die or the like in the form of a large number of threads. Due to its good breathability, fruits and vegetables,
It is widely used as a container for vegetables, eggs, etc.

In recent years, products filled in such net-like containers have tended to be handled in large quantities during the market distribution process.
Along with this, it is now required to attach a label to the surface of each net bag that displays various information such as the name, contents, shipping source, etc. of the product contained in each net bag, just as in the case of ordinary packaging. There is.

Further, since this type of display label is often attached individually by the user of the container at the end of the distribution process, it is preferable that the display label be of a form that can be easily attached even by simple manual operations.

Conventionally, so-called adhesive labels have been used as this type of display label, which is a paper label base material coated with a pressure-sensitive adhesive. Moreover, since the adhered surface is a thread-like net, the effective adhesion area is small and reliable adhesion is difficult, and peeling or falling off often occurs during use.

In order to solve these difficulties, the present applicant and others developed and proposed a technology for thermally adhering display labels with a heat-sensitive adhesive layer formed on the back side to the internet surface (Utility Application No. 12655-1983). issue). According to such means, the heat-sensitive adhesive on the back side is thermally fused to the adherend due to heating when pasting the label, and
Adhesion is much more reliable than with adhesive labels.

However, in order to firmly adhere the label to the thin thread-like part of the net, it is desirable to cause some degree of melting on the polyethylene net side during welding so that the two adhere in a compatible state. It is necessary to maintain a certain sufficient temperature and time.

For this reason, an actual pasting device requires a means of preheating, and if the heating temperature is raised too high to shorten the heating time, there is a risk that the polyethylene net may warp or melt in some cases. . If defective products occur during the continuous labeling process, the work to correct them becomes complicated, so thermal management must be extremely strict.

In addition, heat-sensitive adhesives for display labels often use low-melting-point components such as EVA wax.
Depending on the ambient conditions during label storage, the surface of the label may become sticky, making handling difficult.

Furthermore, when end users handle a wide variety of products in small quantities, it is practically impossible to affix individual labels to the net containing these products using the installation of such a pasting device. It was hot.

Therefore, it is further desired to develop a display label that adheres reliably and quickly to polyethylene nets and is easy to manufacture and handle.

[Means to solve the problem]

The problem with the prior art is that in a support for a net container display label for sticking a display label flat on the surface of a net container made of thermoplastic resin, the support is attached to a release paper and the support is temporarily attached to the release paper. a thermoplastic resin film having a pressure-sensitive adhesive layer on its surface and an ultrasonic welding area at least at the periphery of its back surface, the film having a pressure-sensitive adhesive layer on its surface and an ultrasonic welding area on its back surface at least at its periphery; The pressure-sensitive adhesive layer that is fused to the net container by ultrasonic irradiation and exposed after removal of the release paper temporarily attached to the surface thereof serves as the surface to which the display label is attached. This problem is solved by a support for a net container display label.

[Effect]

In the present invention, a thermoplastic resin film adhered to the silicone-treated surface on the back side of release paper is aligned with a predetermined adhesion position on the surface of a polyethylene net, and the peripheral edge of the film is bonded by ultrasonic fusion. Ultrasonic irradiation is applied from the surface side of the release paper using an ultrasonic horn having an irradiation area of a shape corresponding to the area. Then, the film and the net, both made of synthetic resin, are fused to each other, and the film having the release paper on the surface side is firmly welded onto the net. When attaching display labels, when the release paper on the surface is removed, a film with a pressure-sensitive adhesive layer coated on the surface will be left on the net, so prepare it in advance for this adhesive layer. By overlapping and pressing the desired display label sheets, a display label fixed on the net is obtained.

In this way, the label user can simply peel off the release paper from the display label support adhered to each net and press the designated display label paper onto the film surface to affix the display label onto the net. can be done, and the work is extremely simple.

In addition, since the above-mentioned fusion by ultrasonic irradiation is particularly effective when using the same type of material, it is preferable that the film as a constituent layer of the display label support be made of the same type of synthetic resin as the net. For example, when the net is usually made of polyethylene, the film is preferably also made of a thermoplastic resin mainly composed of ethylene, particularly polyethylene.

The display label support of the present invention is formed, for example, by laminating a polyethylene film coated with a pressure-sensitive adhesive layer to the back side of a long continuous release paper treated with silicone, This support is continuously fed to the net, and at a predetermined position, an ultrasonic irradiation horn with a shape corresponding to the fused area of the film is applied from above the release paper to irradiate the film with the polyethylene film on the lower surface. It is reliably and instantly fused to the net. In this case, a continuous long display label support is cut into a shape corresponding to a predetermined unit label just before it is placed on the net, and the individual supports are sequentially placed at a predetermined position on the net. It is desirable to perform the fusion using sound waves.

The film to be attached to the back side of the release paper should be shaped using a half-die cut or the like, so that the outer periphery of the release paper is slightly larger than the film on each display label support. This is advantageous in that the adhesive does not ooze out from the parts and is easy to peel off.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

As shown in FIG.
The lower surface of the release paper 1 is adhered to the silicone-treated surface via a pressure-sensitive adhesive, and this laminate is half-die cut from the film 3 side, and the residue is removed to form a predetermined shape and shape on the lower surface of the release paper 1. Label-shaped films 3 are arranged at intervals (second
figure).

Next, the drawn end of the cylindrical polyethylene net 6 that is continuously supplied from a net manufacturing device (not shown) is prepared in advance into a flat shape, and the film 3 is cut into the size of each unit label. As shown in FIG.
Ultrasonic waves are irradiated onto the net 6 from the top side of the release paper 1 through the film 3 using a horn (not shown) of an ultrasonic irradiation device that is machined to match the shape of A.

As a result, the fused region 3A of each film 3 and the net 6 are fused together by the ultrasonic energy and are fixed to each other.

In this case, the film 3 and the net 6, which are made of the same type of polyethylene, are quickly and firmly integrated, but the release paper 1, which is made of a different material, is hardly affected by the ultrasonic irradiation.

Furthermore, the peripheral edge portion 3A of the film is welded extremely quickly and reliably by ultrasonic irradiation from a horn of the same shape, and the welding occurs instantaneously and uniformly.
Unlike conventional heat welding, preheating means and the like are not required.

Furthermore, since the irradiation energy is almost concentrated only on the peripheral edge 3A of the film 3 directly under the horn, energy loss due to heat diffusion to the periphery as in the case of normal thermal bonding, or curvature of the label itself due to heat transfer, or other related problems. There is no risk of deformation or damage to components, etc.

In addition, since ultrasonic irradiation is applied only during welding, there is no need to constantly apply electricity and heat unlike a heat seal head, and electric power can be used effectively.

After the peripheral edge 3A of the film 3 is welded to the net 6 in this way, when the release paper 1 is removed when adhering the display label paper, the adhesive layer 2 is exposed on the upper surface of the film 3 adhered to the net 6. Therefore, a paper label 4 or the like on which the desired surface printing 5 has been applied in advance is attached to this portion.

In this case, the user only needs to attach the label paper 4 printed to match each product to the adhesive surface 2 of the film 3 already adhered to the net 6, especially in the case of small lot products. This method does not require any special display film pasting equipment, and the work effort is significantly reduced.

The present invention has been described above with respect to the case where a display label is attached to a net. However, since the display label support of the present invention is firmly welded to the net surface on one side and has an adhesive surface on the other side, the net itself cannot be attached. This method is also applied to the case of fixing to other objects, and FIG. 4 shows an example of this. When temporarily fixing the relatively light and small net 6 to a wall, etc., remove the release paper 1, expose the adhesive surface 2 of the film 3, and simply stick it to the wall surface 8 and nail it. The net 6 can be fixed without using any other fixing means.

[Effect of idea]

As described above, according to the present invention, a display label can be reliably and easily adhered to an adherend such as a polyethylene net.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the display label support of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view showing a state in which label paper is adhered to the display label support of the present invention, and Fig. 4 The figure is an explanatory diagram showing a state in which a net provided with a display label support of the present invention is fixed to a wall surface. 1...Release paper, 2...Pressure sensitive adhesive layer, 2...
Film, 3A...Ultrasonic welding area (periphery of film), 4...Label paper, 5...Label printing area,
6...Polyethylene net.

Claims (1)

[Claims for Utility Model Registration] (1) A support for a net container display label for affixing a display label to the surface of a net container made of thermoplastic resin in a flat manner, the support comprising a release paper 1; It consists of a thermoplastic resin film 3 having a pressure-sensitive adhesive layer 2 temporarily attached to the release paper 1 on its surface and an ultrasonic fusion region 3A on its back surface at least at the peripheral edge; The pressure-sensitive adhesive layer 2 is displayed, which is fused to the net container 6 by ultrasonic irradiation in the ultrasonic fusion area 3A at the peripheral edge of the back surface, and which is exposed after removal of the release paper 1 temporarily attached to the surface of the net container 6. The support for a net container display label as described above, characterized in that it serves as an adhesion surface for a label. (2) The display label support according to claim 1, wherein the film 3 is made of the same type of thermoplastic resin as that of the net container. (3) The display label support according to claim 2, wherein the film 3 and the net container are made of synthetic resin mainly composed of polyethylene. (4) The display label support according to claim 1, wherein the outer peripheral edge of the release paper 1 is at least partially larger than the outer peripheral edge of the film 3.