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a plastic label

A plastic and label technology, applied in the label field, can solve the problems of hygroscopic formula foaming, difficult to degrade, and difficult industrial application, etc., and achieve the best moisture-proof and water-resistant performance, high strength, and good bottle washing effect

Active Publication Date: 2018-09-11
广东万昌印刷包装股份有限公司 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most plastic film labels are bonded by setting a primer adhesive layer on the bottom of the label. During the bonding process, the glue in the adhesive will release gas, causing blisters on the label and causing the label to stick. Bottle doesn't work well
In addition, the cost of the primer adhesive layer is relatively high, it is difficult to degrade, and it will cause secondary pollution to the environment
In addition, when manufacturers recycle bottles for reuse, quality problems such as bottle washing residue often occur, which not only affects the use of secondary bottle stickers, but also increases the difficulty of operation
[0004] In addition, when water-based adhesives are applied to plastic film labels, because the plastic labels are impermeable to moisture, the drying speed will be slow and the probability of air bubbles will increase, making industrial application difficult.
A Chinese invention patent with the publication number CN1592682A discloses a label, which enables water-based adhesives to be applied to plastic labels by setting a moisture-absorbing layer, but it still has the defect of unsatisfactory bottle washing effect
Moreover, it has been verified by experiments that the foaming problem still exists in the moisture-absorbing formula of this patent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, a plastic label includes: a printing layer 1, a plastic substrate layer 2 and a hygroscopic layer 3, and the printing layer 1, the plastic substrate layer 2 and the hygroscopic layer 3 are stacked and arranged sequentially from top to bottom.

[0033] Wherein, the printing layer 1 can be an ink layer or a drawing layer, and the printing layer can be monochromatic or colored, and it mainly serves as decoration and identification, such as printing serial numbers, barcodes, trademarks, decorative graphics, etc.

[0034] The thickness of the plastic substrate layer 2 is between 20-100 μm. A laser structure formed by laser molding of an anti-counterfeit laser grating is arranged on the plastic substrate layer 2 . In this embodiment, it is preferable that the plastic substrate layer is a heat-shrinkable material with a shrinkage coefficient of 1-80%. In this way, when washing the bottle, only the label part needs to be placed in lye solution at 50-90°...

Embodiment 2

[0038] like figure 2 As shown, the structure of the plastic label provided by this embodiment is basically the same as that of Embodiment 1, the difference is that;

[0039] 1. The printing layer 1 is arranged on the lower surface of the plastic substrate layer 2 .

[0040] 2. There is no laser structure on the plastic substrate layer 2 .

Embodiment 3

[0042] like image 3 As shown, the structure of the plastic label provided by this embodiment is basically the same as that of Embodiment 1, the difference is that a bottle-washing functional layer 4 is provided between the plastic substrate layer 2 and the hygroscopic layer 3 .

[0043] Wherein, the bottle washing functional layer 4 is prepared from the following raw materials by weight: 5% acrylic resin with a softening point lower than 20°C, 5% ammonium sulfate, 10% pigment, and 80% mixture of water and ethanol. In the actual bottle washing, the ammonium sulfate in the bottle washing functional layer and the sodium hydroxide in the cleaning solution have a double decomposition reaction, releasing gas to generate a push force, and peel off the plastic label and the container wall to which it is attached, so as to achieve the bottle washing effect. When the bottle washing functional layer 4 is provided, the plastic substrate layer 2 is made of non-shrinkable plastic film.

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Abstract

The invention discloses a plastic label. The plastic label comprises a plastic substrate layer, a printing layer and a moisture absorption layer. The printing layer is located on the upper surface or the lower surface of the plastic substrate layer, and the moisture absorption layer is located on the bottommost layer. The plastic label is characterized in that the upper surface of the moisture absorption layer is provided with a bottle-washing functional layer. According to the plastic label, due to the fact that the bottle-washing functional layer is additionally arranged on the upper surface of the moisture absorption layer, a double decomposition reaction is conducted by means of ammonium ions in the bottle-washing functional layer and hydroxyl ions in cleaning fluid, gas is released to produce butting force, the label is stripped from a container wall where the label is stuck, the purpose of washing a bottle is achieved, the bottle-washing effect is good, and special shrink plastic does not need to be selected.

Description

technical field [0001] The invention relates to the field of labels, in particular to a plastic label. Background technique [0002] Labels are commonly used materials in the packaging industry. Common types of labels include: paper labels, aluminum foil labels and plastic labels. In recent years, with the development of technology, straw-modified plastic film labels with environmental protection properties have been more and more widely used. [0003] In the prior art, most plastic film labels are bonded by setting a primer adhesive layer on the bottom of the label. During the bonding process, the glue in the adhesive will release gas, causing blisters on the label and causing the label to stick. Bottles are not ideal. In addition, the cost of the primer adhesive layer is relatively high, it is difficult to degrade, and it will cause secondary pollution to the environment. In addition, when manufacturers recycle bottles for reuse, quality problems such as bottle washing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F3/02G09F3/10
CPCG09F3/02G09F3/0289G09F3/10
Inventor 周永新何景元谷少克黎志才
Owner 广东万昌印刷包装股份有限公司
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