Heat sealable multilayer packaging film with improved opacity

An improved multilayer polymer film is disclosed. The film may include a first skin layer (31), a second skin layer (32), and an intermediate layer (33) between the skin layers. The first, second, and intermediate layers may be formed from respective first, second, and intermediate polymer compositions. Each layer may have titanium dioxide particles distributed therein in an amount of from 6% to 14% by weight. One or both of the second skin layer (32) and the intermediate layer (33) may have non-white pigment particles distributed therein in an amount of from 0.050% to 0.15% by weight of the layers. The content and distribution of the pigments between layers may provide a relatively disproportionate opacity improvement while retaining a neutral white color surface to receive ink printing, thereby highly conforming the printed color to the target color, and retaining the solderability of the film itself. 本发明公开了一种改善的多层聚合物膜。所述膜可包括第一表层(31)、第二表层(32)、以及在所述表层之间的中间层(33)。第一层、第二层和中间层可由相应的第一聚合物组合物、第二聚合物组合物和中间聚合物组合物形成。每个