Process for the preparation of self-adhesive tapes and foils
Abstract
Abstract SHELF-ADHESIVE TAPES OR FOILS WHICH ADHERE TO A VARIETY OF DISSIMILAR SURFACES UPON MERE CONTACT WITHOUT THE NEED OF MORE THAN SLIGHT PRESSURE AND HAVE GOOD RESISTANCE TO HEAT ARE PREPARED BY APPLYING ON A FLEXIBLE SUPPORT, AFTER ADDITION OF A SMALL AMOUNT OF A CATALYST AND/OR A POLYFUNCTIONAL COMPOUND, A LOW MOLECULAR COPOLYMER WHICHH IS SPREADABLE AT ROOM TEMPERATURE IN A CONDITION SUCH THAT IT HAS ONLY SMALL QUANTITIES OF SOLVENTS THEREIN, COMPOSED OF ACRYLIC ACID ALKYL ESTERS AND A RELATIVELY SMALL AMOUNT OF MONOMERIC COMPOUNDS WHICH ARE POLYMERIZABLE WITH THEM, AND CONTAIN REACTIVE GROUPS IN THE MOLECULE, AND SUBSEQUENTLY EXPOSING THE COATING COMPOSITION APPLIED TO THE SUPPORT TO THE ACTION OF HEAT FOR A SHORT TIME. THE ACTION OF HEAT CAUSES THE CROSS-LINKING OF THE COATING COMPOSITION AND CONVERTS IT FROM THE LIQUID OR THICKLY LIQUID STATE INTO A SOLID COHESIVE SELFADHESIVE LAYER WITH THE PROPERTIES OF A GOOD SELF-ADHESIVE MASS.
Inventors
- 👤 H Lehmann
- 👤 J Curts
Bibliographic Details
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