INDUCTION HEAT-SEAL CLOSURE LINER WITH RESTRICTED PRODUCT ORIFICE
An induction heat-sealed closure liner assembly having a restricted product orifice that is smaller than the mouth of the container to which the assembly is attached, to allow restricted dispensing of product through the orifice. The closure assembly is designed for storing and dispensing a product, such as a solid, liquid or paste product, and includes primary and secondary liner components that are positionable within a retainer portion of a cap to form the closure liner assembly.
1 - 13 . (canceled)
14 . A closure liner assembly configured for sealing an annular rim defining an open mouth of a product container, the closure liner assembly comprising:
a primary liner ( 140 ; 240 ) of planar configuration with opposing top and bottom surfaces and an annular periphery dimensioned to span the open mouth of the container, the primary liner having multiple layers in a direction transverse to a plane defining the open mouth of the container, the multiple layers including a lowermost heat induction heat seal layer forming the bottom surface for bonding to the rim of the container, an uppermost polymer layer forming the top surface, and an intermediate metal foil layer,
a secondary liner ( 160 ; 260 ) of planar configuration disposed adjacent the top surface of the primary liner and having having a restricted product orifice with a periphery smaller than the open mouth and extending in the transverse direction and sized to dispense product therethrough, the secondary liner configured to be permanently bonded to the primary liner,
a cap having a top wall and a depending annular skirt defining an inner closure area configured to releasably engage with the neck of the container and including a retainer portion for temporarily retaining the primary and secondary liners within the inner closure area,
wherein said primary liner and secondary liner are positionable within the retainer portion of the cap to form a closure liner assembly, and the closure liner assembly is positionable to seal the open mouth of the product container by induction heat sealing of the lowermost heat seal layer to the rim,
wherein upon removal of the cap from the container, the secondary liner remains bonded to the top surface of the primary liner as a tamper evident closure of the restricted product orifice, and the primary liner ( 140 ; 240 ) having a central area ( 144 A; 244 A) defined by a perforated edge ( 144 P; 244 P) that matches the diameter of the restricted product orifice ( 165 ; 265 ), wherein the perforated edge assists a user in broaching the central area ( 144 A; 244 A) of the primary liner thereby forming, together with the product orifice ( 165 ; 265 ), a combined restricted product orifice extending through both the primary and secondary liners for dispensing product therethrough.
15 . The closure liner assembly of claim 14 , wherein the primary liner comprises at least three layers.
16 . The closure liner assembly of any of claims 14 , wherein the secondary liner comprises at least two layers.
17 . The closure liner assembly of any of claims 14 , wherein the primary liner and/or secondary liner comprise one or more metal layers.
18 . The closure liner assembly of any of claims 14 , wherein the primary liner and/or secondary liner comprise one or more layers of PET and/or polyolefin film.
19 . The closure liner assembly of any of claims 14 , further comprising a peelable liner ( 500 ) that is temporarily attached to the top surface of the secondary liner ( 160 ) to cover the restricted product orifice ( 165 ).