Polyethylene material with chemical tracing anti-counterfeiting function and application thereof

Abstract

The application discloses a polyethylene material with a chemical tracing anti-counterfeiting function and application thereof. The polyethylene material contains a tracer combination, the tracer combination is composed of erucic acid amide, glycerol monostearate and zinc stearate, the mass ratio of the three is (0.3-0.5):(0.3-0.5):(0.1-0.2), and the total addition amount is 0.05%-0.15% of the total mass of the polyethylene material. The specific proportion combination of the three tracers realizes multiple chemical fingerprint anti-counterfeiting without affecting the appearance, transparency and hand feeling of the polyethylene product, and has the advantages of strong concealment, good anti-counterfeiting effect, low cost and convenient detection.

Description

Technical Field

[0001] This invention relates to the field of plastic packaging materials technology, specifically to a polyethylene material with chemical tracer anti-counterfeiting function and its application in plastic bottles. Background Technology

[0002] Polyethylene (PE) plastic bottles are widely used in packaging for food, beverages, cosmetics, and pharmaceuticals due to their low cost, good processing performance, high chemical stability, and safety. However, counterfeit PE plastic bottles on the market are currently being produced through methods such as refurbishing genuine bottles and using inferior recycled materials, seriously infringing on the legitimate rights and interests of brand owners and consumer safety. To combat counterfeiting, various anti-counterfeiting measures have emerged in existing technologies. For example, anti-counterfeiting labels or QR codes are affixed to the bottle, but these markings are easily transferred, imitated, or reused; anti-counterfeiting through bottle structure design (such as embossed textures or two-color injection molding) requires significant modifications to the mold, resulting in high costs and often affecting the bottle's aesthetic appearance; adding a single tracer substance (such as a fluorescent agent or special additive) to the material allows counterfeiters to obtain the formula through simple component analysis and replicate it; while adding visible pigments or fluorescent powders would compromise the product's transparency, limiting its application on transparent bottles. Therefore, there is an urgent need in this field for an anti-counterfeiting technology for polyethylene bottles that does not affect the appearance of the bottle, is inexpensive, and is difficult to imitate by conventional means. Summary of the Invention

[0003] (a) Purpose of the invention

[0004] This invention provides a polyethylene material with chemical tracer anti-counterfeiting function and its application. It aims to achieve multiple chemical fingerprint anti-counterfeiting without changing the appearance, transparency and feel of polyethylene products, and counterfeiters will find it difficult to know the precise ratio of tracer through conventional detection methods.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a polyethylene material with chemical tracer anti-counterfeiting function, characterized in that the polyethylene material contains a tracer combination; the tracer combination consists of a first tracer, a second tracer, and a third tracer; the first tracer is erucamide, the second tracer is glyceryl monostearate, and the third tracer is zinc stearate; the mass ratio of the first tracer, the second tracer, and the third tracer is (0.3-0.5):(0.3-0.5):(0.1-0.2); the total amount of the tracer combination added is 0.05%-0.15% of the total mass of the polyethylene material. Further, the mass ratio of the first tracer to the second tracer is 1:1. Further, the tracer combination is uniformly dispersed in the polyethylene material as particles with a particle size ≤10μm. Further, the polyethylene material is used for injection molding or blow molding of plastic bottles.

[0007] (III) Beneficial Effects

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] 1. High concealment: Erucamide, glyceryl monostearate and zinc stearate are all colorless or light-colored substances, and the amount added is extremely low (only 0.05%-0.15% of the total mass of polyethylene material). They are uniformly dispersed in polyethylene substrate as particles of ≤10μm, which are completely invisible to the naked eye and will not affect the transparency, color and feel of the product.

[0010] 2. Multiple anti-counterfeiting measures: Utilizing a combination of three tracers with different chemical structures, a "triple chemical fingerprint" is formed. Even if counterfeiters detect one of the substances through component analysis, they will find it difficult to simultaneously replicate the precise proportions of all three, significantly increasing the difficulty of counterfeiting.

[0011] 3. Low cost: The tracers used are all conventional additives in polyethylene processing, which are readily available on the market. The cost increase per ton of polyethylene material is less than 30 yuan, and the cost increase per plastic bottle is negligible.

[0012] 4. Convenient detection: Authenticity can be determined using gas chromatography-mass spectrometry (GC-MS) with ion monitoring mode or liquid chromatography-mass spectrometry (LC-MS / MS). The methods are mature, accurate, and reproducible.

[0013] 5. Anti-transfer: The tracer is evenly distributed inside the material and cannot be removed by peeling off the label or wiping off the ink, thus completely eliminating the counterfeiting method of reusing recycled bottles. Detailed Implementation

[0014] The present invention will be further described below through specific embodiments, but the present invention is not limited to the following embodiments. Any improvements made by those skilled in the art based on the teachings of the present invention without departing from the concept of the present invention fall within the protection scope of the present invention.

[0015] Example 1

[0016] A polyethylene material with chemical tracer anti-counterfeiting function is composed of the following components: 100 parts by weight of polyethylene resin and 0.05 parts by weight of tracer combination. The tracer combination consists of erucamide, glyceryl monostearate and zinc stearate in a mass ratio of 0.3:0.3:0.1.

[0017] Preparation method: Erucamide, glyceryl monostearate and zinc stearate are mixed in the above proportions and stirred evenly by a high-speed mixer to obtain tracer masterbatch; the tracer masterbatch is mixed with polyethylene resin and then injection molded by an injection molding machine to obtain PE bottle.

[0018] Example 2

[0019] A polyethylene material with chemical tracer anti-counterfeiting function is composed of the following components: 100 parts by weight of polyethylene resin and 0.15 parts by weight of tracer combination. The tracer combination consists of erucamide, glyceryl monostearate, and zinc stearate in a mass ratio of 0.5:0.5:0.2. The preparation method is the same as in Example 1.

[0020] Example 3

[0021] A polyethylene material with chemical tracer anti-counterfeiting function is composed of the following components: 100 parts by weight of polyethylene resin and 0.09 parts by weight of tracer combination. The tracer combination is composed of erucamide, glyceryl monostearate and zinc stearate in a mass ratio of 0.4:0.4:0.15.

[0022] The preparation method is the same as in Example 1.

[0023] Detection methods

[0024] Take 5g of the sample from the bottle to be tested, cut it into small pieces, and add an organic solvent (such as n-hexane or tetrahydrofuran) to dissolve and extract it. Analyze it using gas chromatography-mass spectrometry (GC-MS) with ion monitoring mode (SIM) selected. Monitor the characteristic ion fragments of erucamide (m / z=126±0.5) and glyceryl monostearate (m / z=59±0.5). At the same time, determine the zinc content using inductively coupled plasma mass spectrometry (ICP-MS).

[0025] The test results are compared with the standard. If the peak area ratio of erucamide to glyceryl monostearate is within ±10% of the standard value, and the zinc content is within ±10% of the standard value, then it is determined to be a genuine product.

Claims

1. A polyethylene material with chemical tracer anti-counterfeiting function, characterized in that, The polyethylene material contains a tracer combination; The tracer combination consists of a first tracer, a second tracer, and a third tracer; The first tracer is erucamide, the second tracer is glyceryl monostearate, and the third tracer is zinc stearate; The mass ratio of the first tracer, the second tracer, and the third tracer is (0.3-0.5):(0.3-0.5):(0.1-0.2).

2. The polyethylene material with chemical tracer anti-counterfeiting function according to claim 1, characterized in that, The total amount of the tracer combination added is 0.05%-0.15% of the total mass of the polyethylene material.

3. The polyethylene material with chemical tracer anti-counterfeiting function according to claim 1, characterized in that, The mass ratio of the first tracer to the second tracer is 1:

1.

4. The polyethylene material with chemical tracer anti-counterfeiting function according to claim 1, characterized in that, The tracer combination is uniformly dispersed in polyethylene material as particles with a particle size ≤10μm.

5. The polyethylene material with chemical tracer anti-counterfeiting function according to claim 1, characterized in that, The polyethylene material is used to manufacture plastic bottles.

6. A plastic bottle with chemical tracer anti-counterfeiting function, characterized in that, Made of the polyethylene material as described in any one of claims 1-5.