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US 2026/0084872 A1Published application
Container closure with a sealing element
AssigneeSilgan Holdings Inc.
InventorsJuergen Kintscher, Adreas Maniera
Life of this patent
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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.
Claims20
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 30° 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) propylene is a comonomer of the butene copolymer;
- and
- (d) the polymer composition comprises at least 80 wt. % of the butene copolymer.
2 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 30° 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) ethylene is a comonomer of the butene copolymer;
- and
- (d) the polymer composition comprises at least 80 wt. % of the butene copolymer.
2 more elements
A closure having a sealing element, wherein
- (a) the sealing element comprises a polymer composition;
- (b) the polymer composition comprises a first butene copolymer, wherein the butene copolymer has a melting temperature Tm of at least 30° 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;
- and
- (c) the polymer composition comprises a second butene copolymer which is different from the first butene copolymer.
1 more element
Dependencies are inferred from the claim text.