Traceable anti-fake plastic brush wire and preparation method and special detection system thereof

Abstract

The invention discloses a traceable anti-fake plastic brush wire and a preparation method and a special detection system thereof, and belongs to the technical field of plastic brush wire manufacturing and anti-fake tracing. The traceable anti-counterfeiting plastic brush wire is prepared by blending, melting, extruding and drafting a polymer base material and a tracking master batch; wherein the tracking master batch accounts for 0.1-5% of the total mass of the plastic brush wire; the tracking master batch comprises carrier resin, a marker and a dispersing agent, the marker has unique recognizable characteristics, and the marker is at least one of rare earth element doped oxide, nanoparticles modified by specific functional groups or customized copolymer. The preparation method comprises the steps of master batch preparation, blending, extrusion drafting and the like. The special detection gun can quickly and nondestructively detect characteristic signals of markers in the brush wires, and true and false identification and traceability are realized. The anti-counterfeiting property is high, the performance of the brush wires is not affected, detection is convenient, and the tracing anti-counterfeiting problem of brush wire products is solved.

Description

Technical Field

[0001] This invention belongs to the field of plastic brush filament manufacturing and anti-counterfeiting traceability technology, and particularly relates to a traceable and anti-counterfeiting plastic brush filament, its preparation method, and its dedicated detection system. Background Technology

[0002] Currently, plastic brush bristles are widely used in everyday and industrial products such as toothbrushes, industrial brushes, and cleaning brushes. However, existing plastic brush bristle products generally lack effective traceability and anti-counterfeiting measures, leading to a proliferation of counterfeit and substandard bristles in the market, seriously affecting product quality and brand reputation. Specifically, downstream manufacturers find it difficult to identify the source of raw materials, easily resulting in decreased product performance due to the use of inferior bristles; at the same time, manufacturers cannot effectively trace products in the distribution process, which is detrimental to quality control, after-sales service, and infringement protection.

[0003] Traditional anti-counterfeiting technologies, such as inkjet printing, labeling, and anti-counterfeiting packaging, suffer from problems such as easy counterfeiting, easy detachment, and poor wear resistance. Furthermore, they cannot adapt to the high-temperature melting and stretching processes of plastic brush filaments, and cannot achieve precise identification and traceability at the single-filament level. Therefore, there is an urgent need for a tracking and anti-counterfeiting technology that can be integrated into the brush filament body, possesses unique identification features, is difficult to counterfeit, is easy to detect, and does not affect the performance of the brush filaments. This would address the prominent problems of difficult traceability, weak anti-counterfeiting, and susceptibility to counterfeiting in existing technologies. Currently, there is no mature solution that uniformly disperses markers with unique characteristic signals within the brush filament substrate and combines them with dedicated rapid detection equipment to achieve full-chain traceability. Summary of the Invention

[0004] This invention provides a traceable and anti-counterfeit plastic brush filament, its preparation method, and a dedicated detection system, aiming to solve the problem that existing plastic brush filaments lack effective internal anti-counterfeiting marks and are difficult to accurately trace and distinguish between genuine and counterfeit products.

[0005] The technical solution of this invention is implemented as follows:

[0006] A traceable and anti-counterfeiting plastic brush filament, wherein the plastic brush filament is made by extruding and stretching a polymer substrate and a tracking masterbatch after blending and melting;

[0007] The tracking masterbatch accounts for 0.1% to 5% of the total mass of the plastic brush filaments; the tracking masterbatch contains a carrier resin, a marker, and a dispersant, wherein the marker has a uniquely identifiable characteristic and is at least one of rare earth element doped oxides, nanoparticles modified with specific functional groups, or customized copolymers.

[0008] Furthermore, the polymer substrate is at least one of nylon 612, 610, nylon 6, 46, 56, 66 or PP, PE, PBT, PET, PEEK, PPS, PFA or other filamentable materials, or a mixture of two or more materials with the desired properties.

[0009] Furthermore, the marker content in the tracking masterbatch is 5% to 30% by mass, and the carrier resin is material-compatible with the polymer substrate. Even further, when the polymer substrate is nylon 6, the carrier resin is nylon 6; when the polymer substrate is PP, the carrier resin is PP.

[0010] The dispersant is preferably calcium stearate, and the amount of the dispersant added is 0.1% to 5% of the total mass of the masterbatch.

[0011] Furthermore, the rare earth element doped oxide is at least one of Eu2O3 or Tb4O7; and has a specific fluorescence excitation / emission wavelength.

[0012] The nanoparticles modified with the specific functional groups are amino-modified SiO2, which have unique infrared absorption peaks.

[0013] The customized copolymer is a customized copolymer with a specific molecular weight distribution and characteristic chain segments.

[0014] The markers in this invention (such as rare earth element-doped oxides, nanoparticles modified with specific functional groups, or customized copolymers) have specific elemental compositions, specific optical response characteristics, or specific molecular structures, and have specific fluorescence excitation / emission wavelengths or unique infrared absorption peaks, which can provide a basis for specific detection for subsequent tracking and anti-counterfeiting.

[0015] Color masterbatch components may be added to the plastic brush filaments and the tracking masterbatch as needed.

[0016] This invention also provides a method for preparing the above-mentioned traceable anti-counterfeiting plastic bristles, comprising the following steps:

[0017] S01. Preparation of tracking masterbatch: The carrier resin, unique marker and dispersant are mixed in proportion, and the mixture is melt-blended and pelletized to obtain the tracking masterbatch;

[0018] S02. Melting and blending: The polymer base particles and the tracking masterbatch are fed into an extruder in proportion for a second melt blending, and the tracking masterbatch is uniformly dispersed in the polymer melt to obtain a melt mixture;

[0019] S03. Extrusion and drawing: The molten mixture is extruded through a spinneret to form primary filaments, which are then cooled, drawn, and shaped to produce traceable and anti-counterfeiting plastic brush filaments.

[0020] In step S01, the melt blending and pelletizing are carried out in a twin-screw extruder.

[0021] Furthermore, in step S01, the dispersant is preferably calcium stearate, and the amount of the dispersant added is 0.5% to 2% of the total mass of the masterbatch.

[0022] The temperature of the first melt blend is 200–255°C.

[0023] In step S02, the temperature of the second melt blend is 210-280℃.

[0024] In step S03, the cooling water temperature is 15–40°C;

[0025] The stretching ratio is 3 to 8 times, and the stretching temperature is 60 to 120°C.

[0026] Furthermore, following the above preparation step S03, there is also a quality inspection step, as detailed below:

[0027] S04. Quality Inspection: Sampling and testing of the produced traceable and anti-counterfeiting plastic brush filaments to confirm that the presence and concentration of the markers meet the preset standards.

[0028] This invention also provides a dedicated detection system for detecting the aforementioned traceable anti-counterfeiting plastic brush filaments, comprising:

[0029] The signal transmitting module is used to transmit excitation signals to the brush filaments;

[0030] The signal receiving module is used to receive characteristic response signals from markers in the brush bristles;

[0031] A data analysis module is used to process the response signal to qualitatively and / or quantitatively analyze the presence and concentration of the marker;

[0032] The display module is used to output the detection results;

[0033] The power supply module provides power to each module.

[0034] Furthermore, the detection system is a handheld detection gun-type detection system.

[0035] Furthermore, the signal emitting module emits excitation light or infrared light of a specific wavelength according to the type of the marker; the signal receiving module receives characteristic fluorescent emission light, characteristic infrared absorption signal, or characteristic Raman scattering signal accordingly. Specifically, ① if the marker is fluorescent (e.g., rare earth oxides), the emitting module emits excitation light of a specific wavelength (e.g., 395nm), the receiving module captures the characteristic emission light of the marker (e.g., the 615nm emission peak of Eu2O3), and the data analysis module calculates the concentration through fluorescence intensity; ② if the marker is infrared responsive (e.g., aminated SiO2), the emitting module emits infrared light, and the receiving module detects the characteristic absorption peak (e.g., the 3300cm peak of the NH bond). -1 (Absorption peak) to confirm the presence of the marker; ③ If the marker is a customized polymer, detect the Raman shift of the characteristic chain segment using the Raman spectroscopy module.

[0036] The detection accuracy of the above-mentioned dedicated detection system is: it can detect a deviation of ±0.05% in the concentration of markers in the brush filaments, with a detection time of ≤3 seconds, and supports rapid on-site detection.

[0037] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0038] 1. Strong anti-counterfeiting and traceability: The unique marker has a unique characteristic signal that is difficult to counterfeit. It is integrated into the brush bristle body and has no risk of falling off or wearing out. It can achieve accurate traceability of the entire chain from production to end use.

[0039] 2. Does not affect performance: The tracking masterbatch has good compatibility with the substrate, and the markers are evenly dispersed, without reducing the core physical properties of the bristles such as strength, toughness, and wear resistance.

[0040] 3. Convenient and efficient testing: The dedicated handheld testing gun is compact and easy to operate. It does not require damage to the brush bristles and can complete rapid on-site testing within seconds, supporting both qualitative and quantitative analysis.

[0041] 4. High process compatibility: The preparation method can be seamlessly integrated with existing plastic brush filament production lines without the need for large-scale equipment modification, resulting in low production costs and easy industrial promotion and application. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0044] Currently, there is a technological gap in anti-counterfeiting and traceability for plastic brush filaments. Traditional external anti-counterfeiting methods are prone to failure and are not suitable for brush filament products. To solve the above technical problems, this invention proposes a comprehensive solution that embeds a marker with unique identification features into the brush filament body and is equipped with a rapid detection system.

[0045] Example 1

[0046] This embodiment provides a method for preparing traceable and anti-counterfeiting plastic bristles (nylon bristles), including the following steps:

[0047] S01. Preparation of tracking masterbatch: Weigh 70 kg of carrier resin (nylon 612), 27 kg of marker (europium oxide Eu2O3), 2 kg of dispersant (calcium stearate), and 1 kg of black masterbatch, and mix them evenly in a high-speed mixer; put the mixture into a twin-screw extruder and melt-blend it in the temperature range of 210℃~260℃, and then cool it with water and pelletize it to obtain the tracking masterbatch;

[0048] S02. Preparation of brush filaments: Weigh 99 kg of nylon 612 substrate particles and 1 kg of tracking masterbatch from step S01, mix them evenly, and feed them into a single-screw extruder; melt-blend at 200℃~255℃ to uniformly disperse the tracking masterbatch in the nylon melt; extrude the melt through a spinneret with an orifice diameter of 0.3 mm to form a primary filament bundle; cool the filament bundle in a cooling water bath at 15℃, then stretch it 4 times at a temperature of 60℃~120℃, and finally shape it at 150℃ to obtain nylon brush filaments with unique markers and a diameter of approximately 0.065 mm (sample A-1).

[0049] Beneficial effects: The brush filaments prepared in this embodiment exhibit a strong 615nm red fluorescence characteristic peak under 395nm ultraviolet light excitation with a dedicated detection gun, proving that the marker was successfully embedded and the signal was obvious. Mechanical property tests of the brush filaments show that their strength and toughness are comparable to those of the control plastic brush filaments prepared without the addition of tracking masterbatch, and the addition of the marker did not adversely affect their performance.

[0050] Example 2

[0051] This embodiment provides another method for preparing traceable and anti-counterfeiting plastic brush filaments (polypropylene PP brush filaments), including the following steps:

[0052] S01. Preparation of Masterbatch: The carrier resin is polypropylene (PP), and the marker is aminated silica (SiO2-NH2) nanoparticles, which account for 20% of the masterbatch. 1.5% calcium stearate is added as a dispersant. The masterbatch is melt-granulated using a twin-screw extruder.

[0053] S02. Preparation of brush filaments: PP substrate and the tracking masterbatch from step S01 are mixed at a mass ratio of 97:3, and then extruded, spun, cooled, stretched 6 times, and shaped to obtain PP brush filaments;

[0054] Beneficial effects: The bristles can be detected using the infrared spectroscopy module of a detection gun at 3300 cm⁻¹. -1 The presence of a distinct NH characteristic absorption peak nearby confirms the presence of the marker. The brush bristles also retain the original lightweight and abrasion-resistant properties of the PP material.

[0055] Example 3

[0056] This embodiment provides a dedicated detection system (detection gun) for use with the aforementioned brush filaments. The detection gun includes a housing, a control circuit board (integrated data analysis module) disposed within the housing, a battery (power module), and a signal transmitting module (such as an LED excitation light source or an infrared light source) and a signal receiving module (such as a photoelectric sensor or a spectral sensor) disposed at the front end of the housing. The housing is also equipped with a display screen (display module) and operation buttons.

[0057] During operation, the probe of the detection gun is brought close to or lightly touches the brush bristles to be tested. If the marker is fluorescent, the emitting module emits excitation light of a specific wavelength (e.g., 395nm), which excites the rare earth marker within the brush bristles to emit characteristic fluorescence (e.g., 615nm). The receiving module captures this fluorescence signal, and the data analysis module calculates the marker concentration based on the fluorescence intensity and displays "Genuine" and the concentration value on the screen. The entire process takes ≤3 seconds.

[0058] In summary, this invention fundamentally solves the problem of anti-counterfeiting and traceability of brush bristle products by uniformly dispersing a uniquely identifiable marker in masterbatch form within the plastic brush bristle substrate. Combined with a dedicated handheld rapid detection gun, it enables second-level authentication and traceability at multiple stages, including production, distribution, and consumption. The entire system boasts significant advantages such as strong anti-counterfeiting capabilities, minimal performance impact, rapid detection, and good production compatibility, demonstrating high practical value and promising prospects for widespread adoption.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A traceable and anti-counterfeit plastic brush bristle, characterized in that: The plastic brush filaments are made by extruding and stretching a polymer substrate and a tracking masterbatch after blending and melting. The tracking masterbatch accounts for 0.1% to 5% of the total mass of the plastic brush filaments; the tracking masterbatch contains a carrier resin, a marker, and a dispersant, wherein the marker has a uniquely identifiable characteristic and is at least one of rare earth element doped oxides, nanoparticles modified with specific functional groups, or customized copolymers.

2. The traceable anti-counterfeiting plastic bristles according to claim 1, characterized in that: The tracer masterbatch contains 5% to 30% by mass of the marker, and the carrier resin is compatible with the polymer substrate.

3. The traceable anti-counterfeiting plastic bristles according to claim 2, characterized in that: The polymer substrate is at least one of nylon 612, 610, nylon 6, 46, 56, 66 or PP, PE, PBT, PET, PEEK, PPS or PFA. When the polymer substrate is nylon 6, the carrier resin is nylon 6; when the polymer substrate is PP, the carrier resin is PP.

4. The traceable anti-counterfeiting plastic bristles according to claim 1, characterized in that: The dispersant is calcium stearate, and the amount of the dispersant added is 0.1% to 5% of the total mass of the masterbatch.

5. The traceable anti-counterfeiting plastic bristles according to claim 1, characterized in that: The rare earth element doped oxide is at least one of Eu2O3 or Tb4O7; The nanoparticles modified with the specific functional group are aminated SiO2. The customized copolymer is a customized copolymer with a specific molecular weight distribution and characteristic chain segments.

6. A method for preparing the traceable anti-counterfeiting plastic bristles according to any one of claims 1-5, characterized in that: Includes the following steps: S01. Preparation of tracking masterbatch: The carrier resin, unique marker and dispersant are mixed in proportion, and the mixture is melt-blended and pelletized to obtain the tracking masterbatch; S02. Melting and blending: The polymer base particles and the tracking masterbatch are fed into an extruder in proportion for a second melt blending, and the tracking masterbatch is uniformly dispersed in the polymer melt to obtain a melt mixture; S03. Extrusion and drawing: The molten mixture is extruded through a spinneret to form primary filaments, which are then cooled, drawn, and shaped to produce traceable and anti-counterfeiting plastic brush filaments.

7. The method for preparing traceable anti-counterfeiting plastic bristles according to claim 6, characterized in that: In step S01, the dispersant is calcium stearate, and the amount of dispersant added is 0.5% to 2% of the total mass of the masterbatch. The temperature of the first melt blend is 200–255°C; In step S02, the temperature of the second melt blend is 210-280℃; In step S03, the cooling water temperature is 15–40°C; The stretching ratio is 3 to 8 times, and the stretching temperature is 60 to 120°C.

8. The method for preparing traceable anti-counterfeiting plastic bristles according to claim 6, characterized in that: Following preparation step S03, there is also a quality inspection step, as detailed below: S04. Quality Inspection: Sampling and testing of the produced traceable and anti-counterfeiting plastic brush filaments to confirm that the presence and concentration of the markers meet the preset standards.

9. A dedicated detection system for detecting the traceable anti-counterfeiting plastic brush filaments according to any one of claims 1-5, characterized in that: include: The signal transmitting module is used to transmit excitation signals to the brush filaments; The signal receiving module is used to receive characteristic response signals from markers in the brush bristles; A data analysis module is used to process the response signal to qualitatively and / or quantitatively analyze the presence and concentration of the marker; The display module is used to output the detection results; The power module supplies power to all modules; The detection system is a handheld detection gun-type detection system.

10. The dedicated detection system for detecting traceable anti-counterfeiting plastic brush filaments according to claim 9, characterized in that: The signal transmitting module emits excitation light or infrared light of a specific wavelength according to the type of the marker; the signal receiving module receives characteristic fluorescent emission light, characteristic infrared absorption signal, or characteristic Raman scattering signal accordingly.