Use of a polymer dispersion for cold sealing

A method for producing cold-sealed packaging, the method comprising:

• applying an aqueous polymer dispersion composition to a packaging substrate to form a coating on the packaging substrate,
• drying the coating, and
• cold sealing the packaging substrate,
• wherein
• the polymer dispersion comprises a polymer which is present in dispersion in water and is obtained by emulsion polymerization of radically polymerizable monomers in the presence of at least one polymeric protective colloid,
• the polymer has a calculated glass transition temperature of from −20 to +10° C., and
• the polymer is formed to an extent of 0.05 to 1 wt % of at least one methacrylate monomer having a substituent of an formula
• where X is CH2, O, NH or NR, and R is a C1 to C4 alkyl group;
• wherein the extend of the at least one methacrylate monomer is based on the total amount of monomers used for preparing the polymer.