Self-adhesive sheet metal protective film and preparation method thereof
A metal plate and protective film technology, applied in the direction of adhesives, film/sheet adhesives, etc., can solve the problems of protective film curling damage, etc., to reduce white pollution, improve shading rate, and reduce costs.
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Embodiment 1
[0041] S1, material preparation:
[0042] The release layer includes by weight: 20 parts of high-pressure polyethylene, 80 parts of linear polyethylene, 3 parts of white color masterbatch, 20 parts of filler, and 6 parts of flame retardant;
[0043] The filling layer includes by weight: 20 parts of high-pressure polyethylene, 2 parts of black color masterbatch, 80 parts of calcium carbonate filler masterbatch, and 5 parts of flame retardant;
[0044] The transition layer includes by weight: 20 parts of high-pressure polyethylene, 80 parts of linear polyethylene, 3 parts of white color masterbatch, 20 parts of filler, and 6 parts of flame retardant;
[0045] The adhesive layer is ethylene-vinyl acetate copolymer, and the mass content of vinyl acetate is 18%.
[0046] Add the release layer, filling layer, transition layer, and adhesive layer into different mixers according to the mass ratio, stir and dry for 15 minutes.
[0047] S2. Shearing and heating of screw plasticizing e...
Embodiment 2
[0052] S1, material preparation:
[0053] The release layer includes by weight: 50 parts of high pressure polyethylene, 50 parts of linear polyethylene, 5 parts of white color masterbatch, 25 parts of filler, 5 parts of flame retardant,
[0054] The filling layer includes by weight: 50 parts of high pressure polyethylene, 4 parts of black color masterbatch, 100 parts of calcium carbonate filling masterbatch, 8 parts of flame retardant,
[0055] The transition layer includes by weight: 50 parts of high pressure polyethylene, 50 parts of linear polyethylene, 5 parts of black color masterbatch, 25 parts of filler, 5 parts of flame retardant,
[0056] The adhesive layer is an ethylene-vinyl acetate copolymer, and the mass content of vinyl acetate is 20%.
[0057] Add the release layer, filling layer, transition layer, and adhesive layer into different mixers according to the mass ratio and stir and dry for 15 minutes;
[0058]S2. Shearing and heating of screw plasticizing extrud...
Embodiment 3
[0063] S1, material preparation:
[0064] The release layer includes by weight: 80 parts of high pressure polyethylene, 20 parts of linear polyethylene, 8 parts of white color masterbatch, 30 parts of filler, 6 parts of flame retardant,
[0065] The filling layer includes by weight: 80 parts of high pressure polyethylene, 5 parts of black color masterbatch, 120 parts of calcium carbonate filling masterbatch, 10 parts of flame retardant,
[0066] The transition layer includes by weight: 80 parts of high pressure polyethylene, 20 parts of linear polyethylene, 8 parts of black color masterbatch, 30 parts of filler, 6 parts of flame retardant,
[0067] The adhesive layer is an ethylene-vinyl acetate copolymer, and the mass content of vinyl acetate is 21%.
[0068] Add the release layer, filling layer, transition layer, and adhesive layer into different mixers according to the mass ratio and stir and dry for 30 minutes;
[0069] S2. Shear heating of the screw plasticizing extrude...
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