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US 12,589,924 B2Granted
Container closure with a sealing element
AssigneeSilgan Holdings Inc.
InventorsJuergen Kintscher, Andreas Maniera
Life of this patent
Estimating the term…
Abstract
The invention relates to a container closure (1, 21, 41, 61) with a sealing element (3, 23, 43, 63). The sealing element (3, 23, 43, 63) comprises a polymer composition. The polymer composition comprises a butene copolymer. The butene copolymer has a melting temperature Tm of between 30° C. and 130° C., wherein the melting temperature Tm is determined by the second heating curve of a DSC measurement at a heating rate of 10° C. min−1.
Claims29
A closure having a sealing element, wherein
- (a) the sealing element comprises a polymer composition;
- (b) the polymer composition comprises a butene copolymer, wherein the butene copolymer has a melting temperature Tm between 105° C. and 125° C., wherein the melting temperature Tm is determined by the second heating curve of a DSC-measurement at a heating rate of 10° C. min−1;
- (c) wherein the sealing element is disc-shaped or ring-shaped;
- (d) wherein propylene is a comonomer of the butene copolymer;
- and
- (e) wherein the butene copolymer having propylene as a comonomer is the only butene copolymer having propylene as a comonomer in the polymer composition.
3 more elements
A closure having a sealing element, wherein
- (a) the sealing element comprises a polymer composition;
- (b) the polymer composition comprises a butene copolymer, wherein the butene copolymer has a melting temperature Tm of at least 105° C, wherein the melting temperature Tm is determined by the second heating curve of a DSC-measurement at a heating rate of 10° C. min−1:
- (c) wherein the closure is a lug closure, a press-on twist-off closure or a composite closure;
- and
- (d) wherein the butene copolymer is the only polymeric component in the polymer composition.
2 more elements
Dependencies are inferred from the claim text.