Composite salad sauce packaging membrane and preparation method thereof
A composite film and salad technology, which is applied in the field of packaging materials, can solve the problems of packaging contents eroding the glue layer, affecting the packaging and shelf life of the contents, and delamination of the glue layer.
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[0024] Such as Figure 1 to Figure 2 As shown, this specific embodiment adopts the following technical solution: it comprises a 12μm PET printed film layer 1, a 15-20μm functional polyethylene film layer 2, a 60-80μm PE film layer 3 connected in sequence; The polyethylene film layer 2 is a two-layer co-extrusion composite structure. The side where the functional polyethylene film layer 2 and the PET printing film layer 1 are bonded is the ethylene acrylic acid copolymer layer 21; the functional polyethylene film layer 2 is bonded to the PE film layer 3 The adjoining side is the low-density polyethylene and white masterbatch blend layer 22, and the weight ratio of the low-density polyethylene to the white masterbatch is 20-24:3; the ethylene acrylic acid copolymer layer 21 and the low-density polyethylene The thickness ratio of the blend layer 22 with the white masterbatch is 2:3-9:10.
[0025] Wherein, the ethylene acrylic acid copolymer in the functional polyethylene film layer...
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