Acoustic magnetic anti-theft label, label shell, label sealing cover and preparation method thereof
A technology of anti-theft labels and shells, applied in the direction of anti-theft alarms, chemical instruments and methods, instruments, etc., to achieve the effect of reducing costs
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Embodiment 1
[0028] Select extrusion-grade PLA resin, dry the 100% PLA resin, add a small amount (such as 1wt%) of color masterbatch (such as white), stir with a mixer until uniform, and use a single-screw extrusion blown film machine to make a film, blown film The temperature of each section of the machine is controlled at 140-220°C to produce a biodegradable film with a thickness of 0.22mm, and the film is made into a shell of an acoustic-magnetic anti-theft soft label with a cavity structure by a thermoforming process at 40°C;
[0029] After drying the same 100% PLA resin, use a single-screw extrusion blown film machine (without adding color masterbatch), and control the temperature of each section of the blown film machine at 140-220°C to produce a transparent degradable film with a thickness of 0.1mm As the sealing cover material of the acoustic magnetic anti-theft soft label;
[0030] After putting a piece of resonant plate into the shell cavity of the finished acoustic-magnetic anti...
Embodiment 2
[0032] Select extrusion-grade PLA resin, dry the 100% PLA resin, add a small amount (such as 1wt%) of color masterbatch (such as white), stir with a mixer until uniform, and use a single-screw extrusion blown film machine to make a film, blown film The temperature of each section of the machine is controlled at 140-220°C to produce a biodegradable film with a thickness of 0.45mm, and the film is made into a shell of an acoustic-magnetic anti-theft soft label with a cavity structure by a thermoforming process at 100°C;
[0033] After drying the same 100% PLA resin, use a single-screw extrusion blown film machine (without adding color masterbatch), the temperature of each section of the blown film machine is controlled at 140-220°C, and a transparent degradable film with a thickness of 0.3mm is obtained As the sealing cover material of the acoustic magnetic anti-theft soft label;
[0034] After putting the four resonant plates into the shell cavity of the fabricated acoustic-mag...
Embodiment 3
[0036] PLA and PBC are carried out drying respectively, weigh each component by PLA:PBC=99:1 mass ratio, mix, wherein a part carries out melt blending extruding in twin-screw extruder (each part of twin-screw extruder section temperature is controlled at 160-190°C), cooled with water, cut into pellets, and dried to obtain PLA / PBC pellets. Add a small amount (for example, 1wt%) of color masterbatch (for example, white) to the dried PLA / PBC pellets, and stir with a mixer until After uniformity, use a single screw to extrude the blown film machine film. The temperature of each section of the blown film machine is controlled at 140-220°C to produce a biodegradable film with a thickness of 0.22mm. The film is thermoformed at 40°C. The shell of the acoustomagnetic anti-theft soft label prepared with a cavity structure;
[0037] After the other part is dried, use a single-screw extruder to blow the film machine. The temperature of each section of the blown film machine is controlled at...
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Abstract
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