A non-shrinkable washable plastic label and its preparation method
A non-shrinking, plastic technology, used in stamps, instruments, identification devices, etc., can solve the problems of easy peeling off labels and residual glue, and achieve the effects of simple preparation process, easy cleaning and high strength
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Embodiment 1
[0031] A method for preparing a non-shrinkable washable plastic label, comprising the steps of:
[0032] Step 1: Preparation of the plastic surface material layer:
[0033] 1.1 Prepare a plastic film with a thickness of 20 μm;
[0034] 1.2 If the surface tension of the plastic film is less than 40 dyne / cm, corona treatment should be carried out on the surface to make the surface tension ≥ 40 dyne / cm;
[0035] 1.3 The laser grating is molded on the lower surface of the plastic film by soft pressing to obtain the plastic surface material layer 1 .
[0036] The second step: working layer preparation:
[0037] On the lower surface of the plastic surface material layer, a layer of aluminum film layer is prepared by evaporation, and the evaporation is 3 × 10 by vacuum equipment. -3 -6×10 -2 Kpa, the evaporation temperature is 800-1500°C, the evaporation speed is 8 m / s, and the metal aluminum with a purity greater than 98% is evaporated on the lower surface of the plastic surface...
Embodiment 2
[0044] A method for preparing a non-shrinkable washable plastic label, comprising the steps of:
[0045] The first step: Preparation of plastic surface material layer:
[0046] 1.1 Prepare a plastic film with a thickness of 80 μm;
[0047] 1.2 Detect the surface tension of the plastic film, get the surface tension of the film > 40 dynes / cm, no surface treatment is required;
[0048] 1.3 The laser grating is molded on the lower surface of the plastic film by soft pressing to obtain the plastic surface material layer 1 .
[0049] The second step: working layer preparation:
[0050] A layer of aluminum film layer is prepared by vapor deposition on the lower surface of the plastic surface material layer, and the vapor deposition is carried out by vacuum equipment at a vacuum degree of 1×10 -3 -6×10 -2 Kpa, the evaporation temperature is 2000-3000°C, the evaporation speed is 13 m / s, and the metal aluminum with a purity greater than 98% is evaporated on the lower surface of the ...
Embodiment 3
[0057] A method for preparing a non-shrinkable washable plastic label, comprising the steps of:
[0058] Step 1: Preparation of the plastic surface material layer:
[0059] 1.1 Prepare a plastic film with a thickness of 100 μm;
[0060] 1.2 Detect the surface tension of the plastic film to obtain a surface tension of 40 dyne / cm;
[0061] The second step: Silicon film layer preparation:
[0062] A layer of silicon film layer is prepared by vapor deposition on the lower surface of the plastic surface material layer. The vapor deposition is carried out by vacuum equipment at a vacuum degree of 1×10 -4 -6×10 -3 Kpa, the evaporation temperature is 2500-3000°C, the evaporation speed is 20 m / s, and the single crystal silicon with a purity greater than 98% is evaporated on the lower surface of the plastic surface material, and the evaporation thickness is controlled at 450-600 Å;
[0063] The third step: protective layer preparation:
[0064] Below the working layer, apply polyol...
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