Packaged viscoelastic polymer substance

A method for producing a packaged viscoelastic polymer substance, the method comprising:

• a) plastifying a viscoelastic polymer substance at elevated temperatures, the viscoelastic polymer substance being a polymer substance based on poly(meth)acrylates having a weight-average molecular weight of 500,000 g/mol or more;
• b) continuously dispensing the plastified viscoelastic polymer substance into a protective polymer film, the protective polymer film having no self-adhesive properties and having been brought into a tubular form before said continuous dispensing so as to be filled with the plastified viscoelastic polymer substance, thereby forming a strandlike polymer assembly having a diameter of 55 to 70 mm, a core of the plastified viscoelastic polymer substance, and a shell of the protective polymer film, wherein a fraction of the protective polymer film, based on a total weight of the protective polymer film and the plastified viscoelastic polymer substance, is less than 1.0 wt %, and wherein the plastified viscoelastic polymer substance has a viscosity of more than 100 Pas during said continuous dispensing into the tubular protective polymer film;
• c) converting the strandlike polymer assembly into a flattened strandlike polymer assembly with a smallest cross-section having a ratio of width to height of about 2:1 to 7:1;
• d) cooling the flattened strandlike polymer assembly to a temperature at which the strandlike polymer assembly is still plastically deformable;
• and
• e) subsequently winding the cooled flattened strandlike polymer assembly onto a reel, wherein the strandlike polymer assembly wound onto the reel has a length of more than 30 meters.