Heat-sealable matte aluminized printed composite packaging film for cigarettes and preparation method thereof
A composite packaging film, printing and packaging technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problem of limited barrier effect, reduce the initial temperature of heat sealing, avoid scratches on the aluminum plating layer, and ensure insulation Effect
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[0028] The preparation method of the heat-sealable matte printing aluminized composite packaging film for cigarettes of the present invention comprises the following steps:
[0029] A. Preparation of heat-sealable matte printing packaging film: adopt multi-layer co-extrusion polypropylene biaxial stretching preparation process and polypropylene film gravure printing processing process, and use inner printing to prepare, wherein the longitudinal stretching temperature is 60-130 °C, the transverse stretching temperature is 100-175 °C, the temperature of the extruder is 200-250 °C, and the stretching ratio is 4-10;
[0030] B. Preparation of aluminum-coated packaging film: It is prepared by multi-layer co-extrusion polypropylene biaxial stretching preparation process and polypropylene film vacuum aluminum plating process, wherein the longitudinal stretching temperature is 60-130 ° C, and the transverse stretching temperature is 100 ~175℃, extruder temperature 200~250℃, draw ratio...
Embodiment 19
[0040] Select water-based polyurethane glue as the adhesive to carry out composite processing of the printed packaging film obtained in Example 1 and the aluminized packaging film obtained in Example 10 to obtain a composite packaging film for heat-sealable matte printed aluminized cigarettes. The preparation method includes the following steps: step:
[0041] A. Preparation of heat-sealable matte printing packaging film: The preparation process of multi-layer co-extruded polypropylene biaxial stretching and the gravure printing process of polypropylene film are used. The longitudinal stretching temperature is 60 ° C. The transverse stretching temperature is 100°C, the extruder temperature is 200°C, and the draw ratio is 4;
[0042] B. Preparation of aluminum-coated packaging film: It is prepared by multi-layer co-extrusion polypropylene biaxial stretching preparation process and polypropylene film vacuum aluminum plating process, wherein the longitudinal stretching temperatur...
Embodiment 20
[0046] Select vinyl acetate adhesive as the adhesive to carry out composite processing of the printed packaging film obtained in Example 2 and the aluminized packaging film obtained in Example 11 to obtain a printed and aluminized composite packaging film for cigarettes. The preparation method comprises the following steps:
[0047] A. Preparation of heat-sealable matte printing packaging film: the preparation process of multi-layer co-extruded polypropylene biaxial stretching and the processing process of polypropylene film gravure printing are carried out, and the longitudinal stretching temperature is 130 ° C. The transverse stretching temperature is 175°C, the extruder temperature is 250°C, and the draw ratio is 10;
[0048] B. Preparation of aluminum-coated packaging film: It is prepared by multi-layer co-extrusion polypropylene biaxial stretching preparation process and polypropylene film vacuum aluminum plating process, wherein the longitudinal stretching temperature is ...
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