TWM598239U - A heat-removable label(3) - Google Patents

Abstract

The utility model is related to a heat-removable label, which having good printability, heat-removable effect, the label can be used as a beer bottle labels. The structure of label comprising a printed layer, a heat-shrinkable film, a heat-crosslinkable pressure sensitive adhesive layer and a release layer.

Description

A heated removable label (3)

This creation is related to a heat-removable label, which has good printability and heat-removable effect . After removal, there is no residual glue. It is used in the field of printing and packaging technology.

At present, it is known that the carrier film of the heat- removable label is a heat shrinkable film (Taiwan New Patent Publication Number: M535642). The heat shrinkable film is produced due to different bidirectional elongation rates, so that the heated removable label is prone to uneven bidirectional shrinkage rate during heating, and cannot achieve a stable heating removable effect .

This creation is a heat-removable label. The pressure-sensitive adhesive layer contains at least one blocked isocyanate hardener to form a heat-curable pressure-sensitive adhesive layer. The heat-curable pressure-sensitive adhesive layer is heated and cured. After the link is hardened, the heat-removable label can achieve a stable heat-removable effect . Therefore, the label can be removed by heating to complete this creation.

The technical content of this creation is described as follows. This description is an example and is not used to limit the scope of patent protection of this creation.

This creation is a heat-removable label, and its structure from top to bottom includes a first printing layer, a second heat shrinkable film layer, a third heat-curable pressure sensitive adhesive layer, and a fourth release layer.

This creation is a heated removable label, where the first printing layer is on the surface The thickness of the treatment agent is 1 to 8 microns (μm), and the thickness is preferably 3 to 5 microns (μm).

This creation is a heat-removable label, in which the material used for the second layer of heat shrinkable film layer includes two-way stretch heat shrinkable low-density polyethylene and polypropylene blend film, two-way stretch heat shrinkable polyvinyl chloride film or two-way stretch heat Shrink polyester film. The thickness of the heat shrinkable film layer is 30-100 micrometers (μm), and the thickness thereof is preferably 38-75 micrometers (μm).

This creation is a heat-removable label, in which the pressure-sensitive adhesive of the third layer of heat-curable pressure-sensitive adhesive layer includes acrylic pressure-sensitive adhesive or rubber-based pressure-sensitive adhesive, and contains at least one blocked isocyanate hardener . The thickness of the heat-curable pressure sensitive adhesive layer is 10-30 micrometers (μm), and the thickness is preferably 15-25 micrometers (μm).

This creation is a heat-removable label. The materials used for the fourth release layer include paper and plastic film. Its thickness is 25~150 microns (μm), and its thickness is 38-100 microns (μm). By.

1: Printing layer

2: Heat shrinkable film layer

3: Heating can harden the pressure sensitive adhesive layer

4: Release layer

Figure 1 is a schematic structural diagram of a heated removable label.

As shown in Figure 1, this creation is related to a heating removable label, which is printed into various patterns and die-cut into various shapes, including a printing layer (1), a heat shrinkable film layer (2), and a heat-curable Pressure sensitive adhesive layer (3) and release layer (4). The thickness of the surface treatment agent for the first printing layer is 4 micrometers (μm); the second layer of heat shrinkable film layer uses bidirectional stretch heat shrinkable polyester film with a thickness of 50 micrometers (μm); the third layer can be hardened by heating The pressure glue layer is acrylic pressure sensitive glue and contains a blocked isocyanate hardener with a thickness of 20 microns (μm); the fourth release layer is a polyester film with a thickness of 50 microns (μm).

According to the test results of the label product obtained in the foregoing creative embodiment, the label is heated in a hot-air oven at 100°C after 25 minutes , and the pressure-sensitive adhesive layer will be cross-linked and hardened to lose its viscosity, and the heat shrinkable film will be heated With shrinkage, the label can be easily and stably separated from the beer bottle. After observation, there is no residual glue, which can fully meet the requirements of beer bottle recycling. This invention is a kind of heating removable label which has industrial applicability and meets the requirements of new patent.

1: Printing layer

2: Heat shrinkable film layer

3: Heating can harden the pressure sensitive adhesive layer

4: Release layer

Claims (11)

A heat-removable label whose structure from top to bottom includes a first layer of printing layer, a second layer of heat shrinkable film layer, a third layer of heat-curable pressure sensitive adhesive layer and a fourth layer of release layer. The heat-removable label as described in claim 1, wherein the thickness of the first printed layer is 1-8 micrometers (μm). In the heat-removable label according to claim 1, wherein the thickness of the first printing layer is preferably 3 to 5 micrometers (μm). The heat-removable label as described in claim 1, wherein the thickness of the second heat shrinkable film layer is 30-100 micrometers (μm). The heat-removable label according to claim 1, wherein the thickness of the second heat-shrinkable film layer is 38~75 micrometers (μm). The heat-removable label according to claim 1, wherein the thickness of the third layer of heat-curable pressure-sensitive adhesive layer is 10-30 microns (μm). The heat-removable label according to claim 1, wherein the thickness of the third heat-curable pressure-sensitive adhesive layer is preferably 15-25 micrometers (μm). The heat-removable label as described in claim 1, wherein the thickness of the fourth release layer is 25-150 microns (μm). The heat-removable label according to claim 1, wherein the thickness of the fourth release layer is 38-100 micrometers (μm). The heat-removable label according to claim 1, wherein the material of the second heat-shrinkable film layer includes two-way stretch heat-shrinkable low-density polyethylene and polypropylene blend film, two-way stretch heat-shrinkable polyvinyl chloride film or two-way stretch Heat shrinkable polyester film. The heat-removable label according to claim 1, wherein the fourth heat-curable pressure-sensitive adhesive layer contains at least one blocked isocyanate hardener.

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