| abstract |
Disclose a kind of adhesive for food package film, it includes can pass through mixing (A) polyester polyurethane polyol, (B) carbamate resins that pure and mild (C) isocyanate component of polyester polyols obtains, wherein the polyester polyurethane polyol (A) can be obtained by the chain extension of (a1) polyester polyol and (a2) isocyanate compound, the equivalent proportion (NCO/OH) of the hydroxyl of the isocyanate group and polyester polyol (a1) of the isocyanate compound (a2) is 0.6 to 0.85, wherein the polyester polyol (B) has -20 DEG C to 10 DEG C of glass transition temperature.When passing through laminated plastic film preparation food package film, the adhesive for food package film is easy to apply and has the excellent initial adhesion to film.In addition, even if described adhesive also has strong peel strength in content to be fitted into the food pack by the food packaging film preparation and after sterilizing.Even if long-time storage, described adhesive are also able to maintain the appearance of the food package film of the food pack to the food pack including the food at high temperature, so even if content is put into after the food pack. |