Sealing material for container closures
AssigneeActega DS GmbH
InventorDany Mängel
Life of this patent
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Abstract
A container closure seal, in particular for fat-containing filling materials, comprising a polymer compound of which the seal substantially or entirely consists, wherein the polymer compound is PVC-free and comprises at least one OBC as well as at least one co-PP, but substantially no POE and no homo-PP, and the polymer compound has a Shore A hardness at 70° C. between 30 and 85 and a MFI (5 kg/190° C.) of less than 20 g/10 min, as well as a maximum specific enthalpy of melting, determined in accordance with ISO 11357-3, of 50 J/g.
Claims20
A container closure seal, in particular for fat-containing filling materials, the seal consisting essentially of a polymer compound,
- a) the polymer compound comprising at least one olefin block compound (“OBC”) as well as at least one propylene copolymer (“co-PP”), but substantially no polyolefin elastomer (“POE”) and no homo-polypropylene (“homo-PP”) and wherein the polymer compound is PVC free,
- b) and the polymer compound has a Shore A hardness at 70° C. between 30 and 85 and a MFI (5 kg/190° C.) of less than 20 g/10 min,
- c) as well as a maximum specific enthalpy of melting, determined in accordance with ISO 11357-3, of 50 J/g.
Dependencies are inferred from the claim text.