Verschluss mit Dichtungsscheibe sowie Verfahren zu dessen Herstellung

摘要

A cap liner (26) and method for producing a cap liner which is particularly suited for use with a cap (16) employed on a hot filled container. The liner includes a disc (26) having one or more outer layers (28.30) bonded thereto. Preferably, the outer and intermediate layers are formed of homogenous admixtures of polypropylene and polyethelene. The method for producing the cap liner involves mechanically mixing at room temperature polypropylene and polyethylene to form a desired homogenous admixture for each layer, and then co-extruding the admixtures at approximately 320 DEG - 390 DEG F to form the bonded outer and intermediate layers. Alternatively, the intermediate layer may be formed of foamed polyethylene.