PROCESS FOR THE CONTINUOUS, SOLVENT- AND MASTICATION-FREE PRODUCTION OF PRESSURE-SENSITIVE SELF-ADHESIVE COMPOSITIONS BASED ON NON-THERMOPLASTIC ELASTOMERS AND COATING THEREOF TO PRODUCE SELF-ADHESIVE ARTICLES

US6506447B1 · kind B1 · utility

Assignee

• tesa AG · DE

Inventors

• Ralf Hirsch · Quickborn, DE
• Sven Hansen · Hamburg, DE
• Frank Henke · Neu Wulmstorf, DE
• Klaus Massow · Hamburg, DE
• Jorg Speer · Wrist, DE
• Hermann Neuhaus-Steinmetz · Ahrensburg, DE

Key dates

• Filing date: Aug 17, 2000
• Grant date: Jan 14, 2003
• Expiry date: Aug 17, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C48/84
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Process for the continuous solvent-free and mastication-free production of self-adhesive compositions based on non-thermoplastic elastomers in a continuously operating apparatus having a filling section and a compounding section, comprisinga) feeding the solid components of the self-adhesive composition, such as elastomers and resins, into the filling section of the apparatus, optionally feeding of fillers, colorants and/or crosslinkers,b) transferring the solid components of the self-adhesive composition from the filling section to the compounding section,c) adding the liquid components of the self-adhesive composition, such as plasticizers, crosslinkers and/or further tackifier resins to the compounding section,d) preparing a homogeneous self-adhesive composition in the compounding section, ande) discharging the self-adhesive composition,f) coating the self-adhesive composition on a web-form material, where the coating of the web-form material is carried out using a multi-roll applicator unit, preferably using a 2- to 5-roll applicator unit, particularly preferably using a 4-roll applicator unit, so that the self-adhesive composition is shaped to the desired thickness as it passe…