JPH064375Y2 - label - Google Patents

Description

TECHNICAL FIELD The present invention relates to a label that is attached to the surface of a package of various products such as livestock meat products and that has a product label such as a trademark printed thereon.

[Technical background and problems of conventional technology]

Recently, smoked products such as baked pork shown in FIG. 6 and processed meat products such as sausage and ham shown in FIG. 7 have been shrink-wrapped by a heat-shrinkable packaging film 2 in recent years. In the case of packaging of this processed meat product, a packaging film 2 having excellent barrier properties and a high heat shrinkage rate is preferably used. In this type of packaging process, after packaging the content 1 in a packaging film 2 in a vacuum, the packaging film 2 is dipped in a hot water bath or placed in a heating chamber using a hot water shower or hot air to heat the packaging film 2 to heat it. It is contracting. A feature of the completed shrinkable package is that the packaging film 2 shrinks due to heat and fits the outer shape of the content 1. Since such a transparent and fit packaging form improves the appearance of the product, recently, in many cases, shrink-wrapped irregular shaped meat such as smoked products such as baked pork is commercially available. Is starting to appear.

In the shrink wrapping body using the heat shrinkable wrapping film 2 as shown in FIG. 6 and FIG. 7, it is general to provide a product mark 3 such as a trademark on the surface of the wrapping. Conventionally, the packaging film 2 was manufactured by directly printing the product display 3 on the surface of the packaging film 2. Then, the contents 1 are wrapped with the printed packaging film 2, and the printed portion of the product display 3 is also shrunk together with the packaging film 2 by the heat shrinking step. However, when a multilayer film of polyvinylidene chloride and polyolefin having a heat shrinkage ratio at 100 ° C. of about 40% is used as the packaging film 2, the packaging film 2 shrinks in the state after the heat shrinkage. In close contact with the contents. Therefore, at this time, the part of the product display 3 printed on the surface of the packaging film 2 also shrinks. Therefore, in the completed shrinkable package, the inconvenience such as the distortion of the product display 3 will occur. Further, in the heat shrinking step after packaging the contents 1, the ink on which the product display 3 is printed is directly immersed in the hot water tank, so that it is necessary to use an ink having good heat resistance as well, which reduces the printing cost. Get higher

The technique of directly printing the product display 3 on the packaging film 2 has various problems as described above. As another display means for avoiding these problems, it is also possible to print the product display 3 on a label formed of paper or the like, and to adhere the product display 3 to the surface of the packaging film 2 after the shrinking step is completed. There is. However, in the case of an amorphous product such as a smoked product, a label such as paper cannot completely fit the outer shape of the contents 1. As a result, the adhesive force of the label is weakened, and problems such as easy peeling occur.

Further, in order to obtain a label that fits the shape of the contents 1 and is hard to peel off, it is possible to form the label itself with a film material and print the product display 3 on this film. If a film is used as the material of the label, it will be easier to fit the contents 1 than paper or the like. Further, if a heat-shrinkable label material is used as the label material, it is possible to attach the label to the packaging film 2 in advance and shrink the label together with the packaging film 2 to some extent by the heating step.

However, when a printed label is formed on the film material, either the print surface appears on the surface of the label or the print surface appears on the adhesive surface. When the printed surface appears on the surface of the label, the ink comes into contact with the heating medium when the label is heat-shrinked together with the packaging film 2. Therefore, deterioration of the ink due to heat becomes a problem. Further, when the printing surface is on the adhesive surface of the label, the adhesive directly contacts the printing surface, which causes a problem such as soiling of the printing surface. When the product display 3 is directly printed on the film material, the film may be deformed at the time of printing and the printing surface may be distorted.

[Purpose of device]

The present invention has been made by paying attention to the above-mentioned conventional problems, and can fit the surface shape of the packaged contents, and further, the printed surface is finished sharply, the distortion of printing is small, and the gloss of the printed portion is small. It is an object of the present invention to provide a label that can be maintained and the appearance of the product display can be improved and the display quality can be improved.

[Means for solving problems]

The label according to the present invention is a label that is adhered to the surface of a packaging material, in which two label materials formed of a heat-shrinkable film material are overlapped with each other, and at least one of the label materials has an overlapping surface. The product label is printed, and an adhesive for adhering to the packaging material is attached to the surface of the label material on one side.

[Action]

In the present invention, since two label materials made of film are laminated to form a label, the label material is softer than a paper label or the like and easily fits the shape of the contents and the package. In particular, since the label material is formed of a heat-shrinkable film, it is possible to completely fit even a complicated outer shape such as a processed meat product by heat-shrinking together with the packaging film. Further, since the overlapping surface of the label material is printed, the printed portion can be clearly seen through the label material. Further, if the product display is printed with the label material adhered to the release paper, the film can be printed without distortion.

[Example of device]

An embodiment of the present invention will be described below with reference to the drawings of FIGS.

Fig. 1 is a cross-sectional view of the label, Figs. 2 (A) and 2 (B) are cross-sectional views of the label material constituting the label, Fig. 3 is a process drawing of the label production and packaging work, and Fig. 4 Is a perspective view showing a packaging film and a label before the packaging step, and FIG. 5 is a perspective view showing a shrinkable package in a state in which the packaging film and the label are contracted and completed.

Reference numeral 12 is a label. The label 12 is formed by sticking two label materials 12a and 12b together as shown in FIG. This label material 12
As a and 12b, those having a heat shrinkage rate lower than that of the packaging film 11 shown in FIG. 4 at the same temperature are used.

Specific examples of the label materials 12a and 12b include shrink polypropylene film, a film obtained by laminating shrink nylon and shrink polyethylene, shrink nylon single film, shrink linear low density polyethylene (LLDPE), shrink vinyl chloride film, and the like. used. of course,
The shrinkable film is not limited to the above.

The print A for product display is applied to the label material 12a on one side. This print A is applied to the overlapping surface of the label materials 12a and 12b. Then, the print A is sandwiched between the two label materials 12a and 12b, and the label materials 12a and 12b are adhered to each other by the adhesive 14b. Also, the adhesive 1 is applied to the lower surface of the lower label material 12a.
4a is applied, and the release paper 13 is sandwiched by the adhesive 14a.
a is attached. The adhesives 14a and 14b are not limited in kind as long as they are excellent in water resistance and heat resistance and can withstand the boil or retort process. A transparent label material 12b is used so that the print A can be seen through the upper label material 12b. When printing A is performed, first, white is printed on the label material 12a on the lower side, and the product label is printed on the label material 12a, so that the colors forming the product label become vivid and the packaging is completed. In this state, clouding of the color due to the ground color of the contents 20 (see FIG. 5) does not occur. Even if a film whose ground color is white is used as the lower label material 12a, the same effect can be obtained.

Reference numeral 11 shown in FIG. 4 is a packaging film.
This packaging film 11 is a biaxially stretched resin material having a high heat shrinkage rate, for example, 40 at about 100 ° C.
A material having a high shrinkage ratio of about 50% to 50% is used.
When the content 20 is packaged with this packaging film 11 and subjected to heat treatment, the packaging film 11 thermally contracts and adheres to the content 20. The heat shrinkage amount of the packaging film 11 varies depending on the film margin ratio according to the dimensional difference between the packaging film 11 and the contents 20 before the shrinkage, but in the state where the contents 20 are actually packaged. When heat-shrinked, the shrinkage of the film is prevented by the contents 20, and the shrinkage amount becomes smaller than that of the film alone, and as a result, the heat-shrinkable packaging film 11
Closely adhere to each other along the outer shape of the content 20. In particular, when packaging processed meat products or processed dairy products, it is common to use a packaging film 11 having low moisture permeability and oxygen permeability and so-called excellent barrier properties.

Specific examples of the packaging film 11 include a multilayer film of polyvinylidene chloride and polyolefin, a multilayer film of nylon and polyolefin, or a saponified copolymer of ethylene and vinyl acetate, a multilayer film of nylon and polyolefin, or There is a multilayer film of a saponification product of a copolymer of ethylene and vinyl acetate and a polyolefin. In addition, a single layer film of polyvinylidene chloride may be used. Also, when a film made of another material having the same property is developed, it can be used in any case.

Next, a label manufacturing process, a label attaching process, and a packaging process will be described.

First, the label manufacturing process will be described.

One label material 12a is adhesive 14 on release paper 13a.
The one attached via a is used (second (A)
Figure). Similarly, the other label material 12b is also used which is adhered to the release paper 13b via the adhesive 14b (FIG. 2 (B)). Both label materials 12a and 12b are made of the same material and have the same shape. That is, the second
The same thing is used for the thing of FIG. 2 (A) and FIG. 2 (B), respectively.
Then, print the product display A on the label material 12a on one side.
Is applied. This printing A is continuously performed on a plurality of label materials 12a attached on the release paper 13a. At this time, since the release paper 13a functions as a backing paper, the label material 12a made of a shrinkable film does not stretch or distort in the printing process. Therefore, clear and error-free printing can be performed. After performing the product display printing A on the label material 12a shown in FIG. 2 (A), the label material 12b shown in FIG. 2 (B) is peeled off from the release paper 13b, and the label material is printed on the printing surface of the label material 12a. 12b is attached via the adhesive 14b. As a result, the sandwich-shaped label 12 as shown in FIG. 1 is formed on the release paper 13a.

On the other hand, the packaging film 11 is formed into a bag shape shown in FIG. 4 by using a normal bag-making means such as bottom seal, side seal, or center seal. The label 12 shown in FIG. 1 is sequentially peeled off from the release paper 13a and attached to the surface of the packaging film 11. After that, the amorphous contents 20 such as processed meat products are supplied into the packaging film 11. The air inside is sucked by a so-called vacuum packaging machine, the packaging film 11 is cut into an appropriate length, and the cut portion is sealed to complete the vacuum packaging.
Next, the vacuum package is heated. This step is carried out by being transferred to a hot water tank or a heating chamber using a hot water shower or hot air. In the heating step, the packaging film 11 is heated at a temperature of about 80 to 100 ° C., and the packaging film 11 is sufficiently shrunk to fit the shape of the contents 13.

The label 12 also shrinks by this heating process. Label 1
The heat shrinkage rates of the label materials 12a and 12b constituting No. 2 are smaller than the heat shrinkage rate of the packaging film 11. Therefore, with respect to the shrinkable packaging film 11, the label 12 shrinks by a smaller amount than that, and the shrinkage amount of the printing portion A provided in the label 12 becomes small, and the distortion of the pattern, etc. Rarely occurs.
Further, since the packaging film 11 and the label 12 are firmly fixed to each other, the relative shrinkage amount between them is smaller than the shrinkage amount when the packaging film 11 is a single body. Even if contracts, it remains firmly fixed to it and there is no fear of peeling.

Shrinkage of label materials 12a and 12b and packaging film 1
The ideal ratio of the relationship with the contraction rate of 1 depends on various conditions. That is, the substantial shrinkage amount of the packaging film 11 after packaging differs depending on the film margin rate based on the dimensional difference between the packaging film 11 and the contents 20. Therefore, it is a fact that the ideal shrinkage rate of the label materials 12a and 12b is slightly different depending on the substantial shrinkage amount of the packaging film 11 after the heat shrinkage. It is also necessary to consider the relationship with the heat shrinkage stress of the packaging film 11. That is, even if the packaging film has the same heat shrinkage rate at a predetermined temperature, the heat shrinkage stress varies depending on the material, and the difference in the heat shrinkage stress causes a difference in the heat shrinkage property generated on the sticking surface with the label 12. Is caused. However, the label 12 is formed by using the label materials 12a and 12b having a heat shrinkage rate lower than the absolute heat shrinkage rate of the packaging film 11, and the label 12 is attached to the packaging film 11 and heat-shrinked together with the packaging film 11. In this case, although there are some differences in quality such as the displacement of the sticking part after shrinkage due to the difference in the shrinkage ratio combination, as a whole, a higher quality label than the conventional label can be obtained. Actual label material 12
The heat shrinkage rate of a and 12b is as follows:
About 10% is ideal. In some cases, about 5% or less is ideal.

It is also possible to print the product display on both the label materials 12a and 12b so that the two prints are overlapped.
Further, the label is not limited to the shrink wrap and can be attached to the surface of an ordinary wrap and used.

[Effect of device]

As described above, according to the present invention, the effects listed below can be obtained.

(1) Since the label is constructed by stacking two film materials, the entire label is softer than a label such as paper and easily adheres to the surface of the package. Therefore, the label can be easily fitted to irregularly shaped contents such as processed meat products. In particular, since the label is formed of a heat-shrinkable film material, for example, if the heat shrinkage rate of this label material is made smaller than the heat shrinkage rate of the packaging film, as in the example, the label is heat-treated. Shrinks to a certain extent, and can completely adhere to the surface of the package.

(2) Since the label is composed of a plurality of film materials and the product display is printed on the overlapping surfaces of the film materials, the printing unit can see through the film materials. Therefore, a clear product display can be configured. Further, since the printing ink is sandwiched between the label materials, the ink does not come into direct contact with a heating medium such as hot water even when immersed in a hot water tank or the like in the heat shrinking step of the packaging film. Therefore, the range of selection of ink types can be widened, and economical label printing can be performed.

(3) As described in claim 2, if the product label is printed with the label material attached to the release paper,
Label material is not distorted during printing, and clear printing is possible.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a label according to the present invention,
2 (A) and 2 (B) are cross-sectional views of the label material that constitutes the label, FIG. 3 is a process diagram of the label manufacturing work and the packaging work, and FIG. 4 is the packaging used for the shrink wrapping body. FIG. 5 is a perspective view showing a film and a label, FIG. 5 is a perspective view of a shrink wrap with a label attached, and FIGS. 6 and 7 are perspective views showing a conventional shrink wrap. 11 ... Packaging film, 12 ... Label, 12a, 12b
... Label material, 13a, 13b ... Release paper, 14a, 14
b ... Adhesive, 20 ... Contents, A ... Printing of product display.

Continuation of the front page (56) Reference JP-A-61-59387 (JP, A) Actual opening Sho-58-28875 (JP, U) Actual opening Sho-56-167382 (JP, U) Actual public Sho-58-2590 (JP , Y2) Showa 58-46429 (JP, Y2)

Claims (2)

[Scope of utility model registration request] 1. A label that is adhered to the surface of a packaging material, wherein two label materials formed of a heat-shrinkable film material are superposed, and a product is placed on at least one of the superposed surfaces of the label material. A label on which an indication is printed, and an adhesive for adhering to the packaging material is attached to the surface of the label material on one side. 2. The label according to claim 1, wherein the product display is printed in a state where one film material is attached to a release paper with an adhesive.