Process for preparing adhesive using planetary extruder

A continuous process for preparing an adhesive composition comprising:

• introducing at least one non-thermoplastic elastomer into a planetary roller extruder;
• initially compounding the non-thermoplastic elastomer in the planetary roller extruder to form an initially masticated non-thermoplastic elastomer;
• introducing a solid raw material, a liquid material, or both into the initially masticated non-thermoplastic elastomer in the planetary roller extruder;
• and
• subsequently compounding the initially masticated non-thermoplastic elastomer with the solid raw material, the liquid material, or both thereof to form an adhesive composition;
• wherein the liquid material is present and comprises a solvent added to the adhesive composition in an amount of about 10% to about 50% by weight.