Closure having band with internal thread formed by impression
First Claim
1. A method for forming a closure, comprising the steps of:
- injecting a first thermoplastic material into a cavity defined by a first mold to form a closure flange and a closure skirt, the skirt including at least one passage extending through at least a portion of the skirt; and
injecting a second thermoplastic material through the at least one passage, to form a deformable element on an interior surface of a substantially vertical portion of the skirt, wherein the deformable element is spaced apart from the closure flange and is configured to receive threads that extend from a container.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to closures for mating with containers having a threaded finish. The closures comprise a flange and a skirt downwardly depending therefrom. The skirt includes a deformable element formed of a different material than that of the flange and skirt and disposed on an interior surface. The deformable element inner diameter is smaller than the outer diameter of the container, and accordingly deforms upon mating the closure with the container. The container threads impress threads into the deformable element to form threads on the closure. The deformable element is formed of a suitable material. The closures of the present invention provide for the use of high-speed press-on capping equipment.
17 Citations
7 Claims
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1. A method for forming a closure, comprising the steps of:
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injecting a first thermoplastic material into a cavity defined by a first mold to form a closure flange and a closure skirt, the skirt including at least one passage extending through at least a portion of the skirt; and injecting a second thermoplastic material through the at least one passage, to form a deformable element on an interior surface of a substantially vertical portion of the skirt, wherein the deformable element is spaced apart from the closure flange and is configured to receive threads that extend from a container. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for forming a closure, comprising the steps of:
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injecting a first thermoplastic material into a cavity defined by a first mold to form a closure flange and a closure skirt, at least one of the flange or the skirt including at least one passage extending therethrough; and injecting a second thermoplastic material through the at least one passage, to form a deformable element on an interior surface of a substantially vertical portion of the skirt, wherein the deformable element is spaced apart from the closure flange and is configured to receive threads that extend from a container.
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Specification