Shrinkage label with hydrophobic function

Abstract

The utility model discloses a shrink label with a hydrophobic function, which comprises a heat-shrinkable polyester film and a hydrophobic oil resin coating, the hydrophobic oil resin coating is arranged on one side of the heat-shrinkable polyester film, and a pattern printing layer is arranged between the hydrophobic oil resin coating and the heat-shrinkable polyester film. The thickness of the heat-shrinkable polyester film is 45-50 [mu] m, the thickness of the pattern printing layer is 3 [mu] m, and the thickness of the hydrophobic oil resin coating is 2 [mu] m. Compared with the prior art, the shrink label has the following beneficial effects that the heat-shrinkable polyester film and the hydrophobic oleoresin coating are combined for use, so that the adsorption quantity and residual quantity of water vapor on the surface of the label can be reduced, the label is ensured to be tightly attached to a container, and the service time of the whole label is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the field of labels, in particular to a shrink label with a hydrophobic function. Background Art

[0002] The shrinking methods of heat shrink labels are mainly divided into electric heat shrinking and steam shrinking. Steam shrinking is more uniform and perfect than electric heat shrinking, so steam shrinking has a wider range of applications. However, water vapor residue is prone to occur during steam shrinking. This is because the steam shrinking process uses high-temperature steam to heat and shrink the label, and this process produces a large amount of water vapor. When the label is exposed to steam during the shrinking process, some of the steam may be absorbed by the label or sandwiched between the label and the packaging container. If the water vapor is not discharged in time during the packaging process, the water vapor may remain between the label and the container or between the label and the product surface. This residual water vapor may cause the label to not fit tightly with the container or product, affecting the appearance and quality of the packaging, and may even cause the label to peel off or be damaged. Utility Model Content

[0003] In view of the above problems, the utility model provides a shrink label with hydrophobic function.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A shrink label with hydrophobic function comprises a heat shrinkable polyester film and a hydrophobic varnish resin coating, wherein the hydrophobic varnish resin coating is arranged on one side of the heat shrinkable polyester film, and a pattern printing layer is arranged between the hydrophobic varnish resin coating and the heat shrinkable polyester film.

[0006] The hydrophobic varnish resin coating is located at the innermost side of the entire label. When the entire label is shrunk onto the bottle, the hydrophobic varnish resin coating contacts the bottle wall.

[0007] In this type of label, the functions of the heat-shrinkable polyester film are as follows: first, it is used for pattern printing (i.e., forming a pattern printing layer); secondly, due to the special properties of its molecular structure, the heat-shrinkable polyester film is not easy to absorb moisture, so it can maintain its stability and performance in a humid environment, ensuring the stability of the quality of the entire label; in addition, the heat-shrinkable polyester film has high stability and durability, and can maintain its shape and performance during transportation and storage, which can ensure that the performance of the entire label remains stable before use.

[0008] The role of the hydrophobic resin varnish coating is as follows: the hydrophobic varnish coating can make the inner surface of the label have good hydrophobicity, and the water droplets present a high contact angle on its surface, thus forming a rolling effect of the water droplets. This property can reduce the adsorption and residue of water vapor on the label surface, which can improve the tightness between the label and the container surface and reduce the adverse effects of residual water vapor on the container and the label; in addition, the hydrophobic resin coating can effectively prevent water and moisture from penetrating into the inner surface of the label and the inner wall of the bottle, thereby protecting the label and the bottle from water damage and moisture corrosion; the hydrophobic varnish coating can reduce the adhesion of surface dirt, dust and grime, and keep the appearance and performance of the label and the bottle clean for a long time; the hydrophobic resin coating usually has a certain chemical resistance, and can resist the erosion of acid, alkali and other chemical substances, thereby extending the service life of the entire label.

[0009] In summary, this type of shrink label can reduce the amount of water vapor adsorbed and residual on the label surface by combining the heat-shrinkable polyester film and the hydrophobic varnish resin coating, ensure a close fit between the label and the container, and effectively extend the service life of the entire label.

[0010] Optionally, the thickness of the heat-shrinkable polyester film is 45um to 50um, the thickness of the pattern printing layer is 3um, and the thickness of the hydrophobic varnish resin coating is 2um.

[0011] The beneficial effect of the utility model is that by using the heat-shrinkable polyester film and the hydrophobic varnish resin coating in combination, the amount of water vapor adsorbed and the amount of residue on the label surface can be reduced, ensuring that the label fits tightly to the container, and effectively extending the service life of the entire label. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram showing the use of a shrink label with a hydrophobic function.

[0013] The reference numerals in the figure are: 1. bottle wall; 2. hydrophobic varnish resin coating; 3. ink printing layer; 4. heat shrinkable polyester film. DETAILED DESCRIPTION

[0014] The utility model is described in detail below in conjunction with the accompanying drawings.

[0015] As attached Figure 1 As shown in the figure, a shrink label with hydrophobic function includes a heat-shrinkable polyester film 4 and a hydrophobic varnish resin coating 2. The hydrophobic varnish resin coating 2 is arranged on one side of the heat-shrinkable polyester film 4, and a pattern printing layer is arranged between the hydrophobic varnish resin coating 2 and the heat-shrinkable polyester film 4.

[0016] The hydrophobic varnish resin coating 2 is located at the innermost side of the entire label. When the entire label is shrunk onto the bottle, the hydrophobic varnish resin coating 2 contacts the bottle wall 1 of the bottle.

[0017] The thickness of the heat-shrinkable polyester film 4 is 45 um to 50 um, the thickness of the pattern printing layer is 3 um, and the thickness of the hydrophobic varnish resin coating 2 is 2 um.

[0018] The preparation method of this label is as follows: first, a pattern printing layer is printed on a heat-shrinkable polyester film 4, and then a hydrophobic varnish resin is applied on the pattern printing layer, and finally a film composed of a hydrophobic varnish resin coating 2, a pattern printing layer and a heat-shrinkable polyester film 4 is formed. After the film is cut and then folded into a cylindrical shape, a shrink label is obtained.

[0019] In this embodiment, the hydrophobic varnish resin can be selected from the DF-1150 resin of the Difen brand (CAS No. 28961-43-5).

[0020] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A shrink label with hydrophobic function, characterized in that: The invention comprises a heat-shrinkable polyester film and a hydrophobic varnish resin coating, wherein the hydrophobic varnish resin coating is arranged on one side of the heat-shrinkable polyester film, and a pattern printing layer is arranged between the hydrophobic varnish resin coating and the heat-shrinkable polyester film.

2. The shrink label with hydrophobic function according to claim 1, characterized in that: The thickness of the heat-shrinkable polyester film is 45um-50um, the thickness of the pattern printing layer is 3um, and the thickness of the hydrophobic varnish resin coating is 2um.

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