Positioning embossment colorful local transfer paper cup packaging material and preparation method thereof
A technology of packaging materials and bright colors, which is applied in the field of positioning embossed colorful round transfer paper cup packaging materials and its preparation, can solve the problem of poor anti-leakage and waterproof functions of paper, non-degradable PE materials, and non-compliance with the development trend of packaging environmental protection, etc. problems, to achieve the effect of customizable patterns, promotion of development and innovation, and low energy consumption
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[0040] like figure 1 As shown, a positioning embossed colorful paper cup packaging material, including PLA coating layer 1, base paper layer 2, adhesive layer 3, metal aluminum layer 4, holographic laser information layer 5, Transfer paint layer 6 and colorful varnish layer 7. The holographic laser information layer contains anti-counterfeiting laser patterns and positioning cursors. The anti-counterfeiting laser patterns include multi-angle diffraction, single beam relief, 3D true color holography, three-dimensional color lenses and white light hyperbolic lens laser patterns. The depth of the laser patterns is 0.5~ 5 μm. The performance of the packaging material is non-permeable, and the brightness value L of the product as a whole is ≥ 89; lead (Pb) ≤ 3.0mg / kg; arsenic (As) ≤ 1.0mg / kg; formaldehyde ≤ 1.0mg / dm 2 ; Potassium permanganate consumption ≤ 40mg / kg.
[0041] The thickness of the PLA coating layer 1 is 8-10 μm, and the weight of the base paper layer 2 is 150-280 g...
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