초록 ▼

An improved liner element for a closure cap which is adapted to be disposed within the closure cap and bonded to the interior end surface thereof. The liner element is characterized by having a laminated structure comprising a backing layer or cushion layer of surface-sorbent material, such as fabri

An improved liner element for a closure cap which is adapted to be disposed within the closure cap and bonded to the interior end surface thereof. The liner element is characterized by having a laminated structure comprising a backing layer or cushion layer of surface-sorbent material, such as fabric, a relatively thin sheet of paper or comparable surface-sorbent cellulosic or paper-like membrane or substrate, having an inner face which is surface-bonded to the interior end surface of the closure and having an outer face which is surface-bonded to a barrier layer of pliant polymeric material. The barrier layer of polymeric material is selected to possess the properties of being essentially impermeable to water vapor and gaseous transmission so as to be suitable for closure caps utilized in conjunction with containers for packaging comestible products and carbonated or non-carbonated, alcoholic and non-alcoholic beverages. Additionally, the barrier layer is selected to be inert with respect to the container\s contents to avoid impairment or alteration of the color, flavor or quality characteristics of the contents of the container. In a preferential alternative aspect, the selected barrier layer is also an essentially transparent polymeric material and the outer surface of the backing layer is receptive to the application of marking materials, such as inks or the like so as to accommodate distinctively applied markings which are visibly discernible through the barrier layer.

대표청구항 ▼

In a closure cap for establishing and maintaining hermetic sealability against the dispensing end of a bottle, said closure cap including an interior endwall and sidewall surface, an organic sizing material bonded to and coextensive with said endwall and sidewall surface and a laminated liner elemen

In a closure cap for establishing and maintaining hermetic sealability against the dispensing end of a bottle, said closure cap including an interior endwall and sidewall surface, an organic sizing material bonded to and coextensive with said endwall and sidewall surface and a laminated liner element, the improvement wherein said liner element comprises: a backing layer of surface-sorbent material selected from the group comprising cloth fabric, cellulosic material, paper or paper-like material and having an inner face confronting and bonded to the sizing material on said endwall surface, and having an oppositely facing outer face, and a barrier layer of pliant polymerized ethylene/vinyl acetate copolymer material possessing the properties of being substantially transparent and essentially impermeable to water vapors and gaseous substances, said barrier layer being surface-bonded to the outer face of said backing layer, and a distinctive marking applied on said outer face of said surface-sorbent material and being visibly discernible through said barrier layer.