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Biodegradable adhesive sticker label

A biodegradable and labeling technology, applied in the field of self-adhesive labels, to achieve the effects of good biodegradability, improved viscosity and good mechanical properties

Active Publication Date: 2013-01-09
中国印刷科学技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is only applicable to in-mold forming labels, containers and processes, and has certain limitations

Method used

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  • Biodegradable adhesive sticker label
  • Biodegradable adhesive sticker label
  • Biodegradable adhesive sticker label

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of surface material: weigh 30g of PHBV, 1g of epoxy soybean oil, active CaCO 3 0.3g, 1g of glyceryl stearate, after mixing the above raw materials in a high-speed pulverizer for 20s, use an extruder to extrude the mixture into a sheet with a thickness of 30 μm to obtain a face material.

[0029] Preparation of adhesive: Weigh 20g of starch, 90g of water, 5g of P(3HB-co-4HB) (wherein the molar content of 4HB is 40%), 0.5g of CaO, CuSO 4 0.5g, boric acid 0.1g, antibacterial agent (for starch glue special antibacterial agent, commercially available product) 0.1g. Dissolve starch in water, stir for 20 minutes, then gradually add CaO under stirring, after stirring for 30 minutes, then add P(3HB-co-4HB), continue stirring for 30 minutes, and finally add CuSO 4 , boric acid, bacteriostatic agent, continue to stir for about 1 hour until the sample becomes a viscous fluid and can flow evenly, let it stand until the temperature drops to room temperature, and it is ...

Embodiment 2

[0034] Preparation of surface material: Weigh 70g of PHBHHx, 150g of polylactic acid, 50g of starch, 15g of epoxy soybean oil, 1.0g of boron nitride, and 10g of sodium stearate, and mix the above PHBHHx, polylactic acid and starch in a high-speed pulverizer for 20s Finally, add epoxidized soybean oil, boron nitride and sodium stearate, and continue mixing for 20 seconds; use an extruder to extrude the mixture into a sheet with a thickness of 60 μm to obtain the surface material.

[0035] Preparation of adhesive: Weigh 60g of starch, 110g of water, 30g of PHBHHx, 20g of NaOH, ZnSO 4 10g, borax 5g, antibacterial agent (for starch glue special antibacterial agent, commercially available product) 5g. Dissolve starch in water, stir for 20 minutes, then gradually add NaOH under stirring, after stirring for 30 minutes, then add PHBHHx, continue stirring for 30 minutes, and finally add ZnSO 4 , borax, antibacterial agent, continue to stir for about 1 hour until the sample is a viscou...

Embodiment 3

[0039] Preparation of surface material: Weigh 40g of PHB, 90g of polylactic acid, 40g of starch, 3g of epoxy soybean oil, 0.3g of sorbitol, 1g of calcium stearate, and mix the above PHB, polylactic acid and starch in a high-speed pulverizer for 20s , then add epoxidized soybean oil, sorbitol and calcium stearate, and continue mixing for 20 seconds; use an extruder to extrude the mixture into a sheet with a thickness of 40 μm to obtain a surface material.

[0040] Preparation of adhesive: weigh 20g of starch, 100g of water, 10g of PHB, Ca(OH) 2 3g, ZnO 0.5g, boric acid 0.5g, antibacterial agent (for starch glue special antibacterial agent, commercially available product) 0.2g. Dissolve starch in water, stir for 20min, then gradually add Ca(OH) under stirring 2 , after stirring for 30 minutes, add PHB, continue to stir and react for 30 minutes, finally add ZnO, boric acid, bacteriostat, continue to stir for about 1 hour until the sample is a viscous fluid and can flow evenly, l...

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Abstract

The invention relates to a biodegradable adhesive sticker label. The biodegradable adhesive sticker label comprises a surface material layer, an adhesive layer and backing paper, wherein the adhesive layer is positioned between the surface material layer and the backing paper, the backing paper adopts silicone oil-coated glassine paper, and the surface material layer comprises the following compositions in part by weight: 30-70 parts of PHA, 0-150 parts of polylactic acid, 0-50 parts of starch, 1-15 parts of plasticizer, 0.3-1 part of nucleating agent, and 1-10 parts of lubricating agent; the adhesive layer comprises the following compositions in part by weight: 20-60 parts of starch, 90-110 parts of water, 5-50 parts of PHA, 0.5-20 parts of alkaline matters, 0.5-10 parts of water-proofing agent, 0.1-5 parts of crosslinking agent, and 0.1-5 parts of bacteriostatic agent. Complete biodegradation can be realized without compost treatment; the adhesive sticker label has better mechanical property according to weight part proportion of all compositions, and the viscosity, the water resistance and the binding strength of oxidized starch can be effectively regulated and improved. In addition, the label has the characteristics of being simple in structure, simple and convenient in preparation process, and low in cost.

Description

technical field [0001] The invention relates to a self-adhesive label, in particular to a biodegradable self-adhesive label. Background technique [0002] Self-adhesive labels are mostly made of paper, film or special materials as the fabric, coated with adhesive on the back, and a composite material coated with silicon-coated backing paper as the protective paper. At present, the self-adhesive label industry has maintained rapid growth for many years, but the non-degradable and difficult to recycle of these materials have caused enormous pressure on the environment. [0003] Publication number CN101602921A, a patent application published on December 16, 2009, discloses an environmentally friendly hot-melt self-adhesive material and its preparation method. This environmentally friendly hot-melt self-adhesive material uses glassine paper as the base paper , treated with a solvent-free solution, coated with glue on the surface of the surface material, the glue is 100% solid c...

Claims

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Application Information

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IPC IPC(8): G09F3/10C09J103/02C09J167/04C08L67/04C08L3/02B32B37/10B32B37/12B32B38/16
Inventor 张竞禇庭亮
Owner 中国印刷科学技术研究院有限公司
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