| abstract |
Closure for containers made of metal or plastic for a container intended to house food or beverages, with a sealing insert made of a sealing material comprising at least one polymer mixed with other substances, whereby - the sealing material does not contains PVC and essentially no cross-linked polymer, - the sealing material is essentially free of components that are liquid at the application temperature; - the sealing insert can be pasteurized at temperatures up to 98ºC; - the sealing material gives measured values between 40 and 95 on the Shore A hardness scale, and - the sealing material comprises at least three different polymers, the first being polypropylene, while the second polymer is a POE, and the third polymer is a thermoplastic elastomer. |