Wrapper paper with improved flame resistance
Assigneedelfortgroup AG
InventorsRoland Zitturi, Dietmar Volgger
Life of this patent
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Abstract
A wrapper paper is described that is suitable for use on aerosol-generating articles and which comprises pulp fibers and one or more polyphosphates, wherein the pulp fibers make up at least 55% and at most 95% of the mass of the wrapper paper and the polyphosphates are together contained in a concentration of at least 5% and at most 30% with respect to the mass of the wrapper paper. In this regard, the polyphosphates are compounds with the molecular formula Mn+2PnO3n+1 or Mn[H2PnO3n+1], wherein n is at least 2 and at most 100 and M is a monovalent metal or ammonium (NH4+).
Claims20
Aerosol-generating article, which comprises a wrapper paper and an aerosol-generating material, wherein the aerosol-generating material is configured to be heated but not bort during an intended use and wherein said aerosol generating material is configured to release said aerosol upon heating to a temperature of 400° C. or less, wherein the wrapper paper wraps the aerosol-generating material, wherein said wrapper paper comprises pulp fibers and one or more polyphosphates, wherein the pulp fibers make up at least 70% and at most 95% of mass of the wrapper paper and the polyphosphates are together contained in a concentration of at least 5% and at most 30% with respect to said mass of the wrapper paper, wherein the polyphosphates are compounds with the molecular formula Mn+2PnO3n+1 or Mn[H2PnO3n+1], wherein n is at least 2 and at most 100 and M is a monovalent metal or ammonium (NH4+).
Aerosol-generating article, which comprises a wrapper paper and an aerosol-generating material, wherein the wrapper paper wraps the aerosol-generating material, wherein said wrapper paper comprises pulp fibers and one or more polyphosphates, wherein the polyphosphates are together contained in a concentration of at least 5% and at most 30% with respect to mass of the wrapper paper, wherein the polyphosphates are compounds with the molecular formula Mn+2PnO3n+1 or Mn[H2PnO3n+1], wherein n is at least 2 and at most 100 and M is a monovalent metal or ammonium (NH4+), and wherein a proportion of pulp fibers in said wrapper paper is at least 75% and at most 90%, each with respect to said mass of the wrapper paper.
Aerosol-generating article, which comprises a wrapper paper and an aerosol-generating material, wherein the wrapper paper wraps the aerosol-generating material, wherein said wrapper paper comprises pulp fibers and one or more polyphosphates, wherein the pulp fibers make up at least 70% and at most 95% of mass of the wrapper paper and the polyphosphates are together contained in a concentration of at least 5% and at most 30% with respect to the mass of the wrapper paper, wherein the polyphosphates are compounds with the molecular formula Mn+2PnO3n+1 or Mn[H2PnO3n+1], wherein n is at least 2 and at most 100 and M is a monovalent metal or ammonium (NH4+),
- wherein the wrapper paper is connected to a further layer of a material, and wherein the further layer is a paper layer, wherein said paper layer comprises pulp fibers and white filler particles and the white filler particles make up at least 15% and at most 45% of mass of the paper layer and the paper layer faces away from the aerosol-generating material during an intended use.
Dependencies are inferred from the claim text.