TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The radical scavenger is 3,4-dihydroxybenzaldehyde, 1,1-diphenyl-2-(trinitrophenyl)hydrazine, 2-methyl-2-nitrosomethane, 2-methyl-2-nitrosopropane, 3-arylbenzofuranone or 5,5-dimethyl-1-pyrroline N-oxide. The crosslinking agent is 2,2-di(tert-butylperoxy)butane, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 1,1-di-(tert-butylperoxy)-3,3,5-trimethylcyclohexane, tert-butyl peroxybenzoate, tert-butyl peroxy-2-ethylhexanoate, tert-butylperoxy 2-ethylhexyl carbonate, di-tert-butyl peroxide or 1,1-di(tert-butylperoxy)cyclohexane. The content of vinyl acetate in EVA polymer is 25-40%. The packaging adhesive film further contains UV absorbent, antioxidant, light stabilizer and tackifier. The UV absorbent is 2-hydroxy-4-methoxybenzophenone, 2,4-dihydroxybenzophenone, 4-dodecyloxy-2-hydroxybenzophenone, 2-hydroxy-4-(octyloxy)benzophenone or 2,2-dihydroxy-4,4-dimethoxy benzophenone. The antioxidant is tris(2,4-di-tert-butyl-phenyl)-phosphite, dinonylphenyl bis(nonylphenyl) phosphite, pentaerythritol tetrakis( beta -(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) or octadecyl beta -(3,5-di-tert-butyl-4-hydroxyphenyl)propionate. The light stabilizer is tris(1,2,2,6,6-pentamethylpiperidyl)phosphite, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate or bis(1-octoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate. The tackifier is vinylethoxysilane, gamma -methacryloxypropyltrimethoxysilane, beta -3,4-epoxycyclohexylethyltrimethoxysilane, gamma -2,3-epoxypropoxy propyltrimethoxysilicane, gamma -(3-chloropropyl)trimethoxysilane, vinyltriacetoxysilane or gamma -aminopropyltriethoxysilane.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The crosslinking inhibitor is anhydrous acrylic metal, anhydrous methacrylate metal salt, stearate, polyethylene glycol, ethylene polymer, ethylene/propylene polymer, ethylene/propylene/butylene polymer, butadiene polymer and derivative or cyclopentadiene polymer and derivative. The mass of crosslinking agent is 0.4-1.5% of the mass of the EVA polymer.