Composite safety line
A security thread and magnetic technology, which is applied in the field of composite security thread, can solve the problems of poor anti-counterfeiting effect and easy cracking, and achieve the effect of increasing the difficulty of cracking, improving security and anti-counterfeiting performance, and enhancing anti-counterfeiting performance
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Embodiment 1
[0038] Such as figure 1 As shown, a specific embodiment of the security thread according to the present invention is given. A composite security thread includes at least one base layer 1 carrying a magnetic substance, and two magnetic anti-counterfeiting layers are provided on the base layer 1. In this embodiment, the two magnetic anti-counterfeiting information layers are the nano-film layer 2 and the magnetic information layer 3. The nano-film layer 2 and the magnetic information layer 3 are provided with different magnetic codes that do not interfere with each other. Here, it can also be set as multiple magnetic anti-counterfeiting information layers with different magnetic codes in other forms.
[0039] In this embodiment, the width of the composite security thread is 1.5mm, and the width can also be selected to be 1-3mm as required; the nano-film layer 2 and the magnetic information layer 3 are arranged on the same side of the base layer 1. , Here can also be set on both sid...
Embodiment 2
[0044] On the basis of the above embodiment, the covering layer 4 is also provided with a protective base layer 7, such as figure 2 As shown, the base layer 1 and the protective base layer 7 form a protective interlayer to protect the magnetic anti-counterfeiting layer from deformation and damage and prolong its service life. In this embodiment, the width of the security thread is 2 mm.
[0045] The preparation process of the composite security thread described in this embodiment is as follows: a peeling layer is coated on one side of a PET film with a thickness of 25 μm, and a nano film layer with a thickness of 100-200 nm is prepared on the peeling layer by a vacuum magnetron sputtering process. , Coat the adhesive layer on the nano film layer 2, and then use the cold hot stamping transfer process based on UV curing technology to transfer the nano film to the PET film base layer 1 with a thickness of 12μm according to the designed size and spacing to form a line code , The wid...
Embodiment 3
[0049] In this embodiment, the nano-film layer 2 and the magnetic information layer 3 are arranged on both sides of the base layer 1, a protective base layer 7 is arranged on the nano-film layer 2, and the magnetic information layer 3 A covering layer 4 is provided on it, and the width of the composite security thread in this embodiment is 2.5 mm.
[0050] The preparation process of the composite security thread described in this embodiment is as follows:
[0051] Coat a peeling layer on one side of a PET film with a thickness of 35μm, prepare a nano-film layer 2 with a thickness of 100-200nm by a vacuum magnetron sputtering process on the peeling layer, and coat an adhesive layer on the nano-film layer 2. Subsequently, the cold stamping transfer process is used to transfer the nano film to the 12μm thick PET film base layer 1 to form a line code according to the designed size and spacing. The width of the magnetic area of the nano film is 2-4mm, and the adjacent interval is 20-2...
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Abstract
Description
Claims
Application Information
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