초록 ▼

A method for forming a liner in a closure for a container includes forming a plastic closure cap having a circular top wall portion and a depending annular skirt portion depending from the top wall portion, and depositing a quantity of moldable liner forming plastic material in the cap. A liner form

A method for forming a liner in a closure for a container includes forming a plastic closure cap having a circular top wall portion and a depending annular skirt portion depending from the top wall portion, and depositing a quantity of moldable liner forming plastic material in the cap. A liner forming assembly which has a liner tip and a liner sleeve, the liner tip being axially movable relative to said liner sleeve, and the liner sleeve defining a plurality of circumferentially located, radially oriented venting channels positioned on an outer surface thereof, is advanced into the cap to engage the sleeve with the cap, adjacent to the venting channels, to define a liner space. The liner tip is advanced into the cap, relative to the liner sleeve, to compress a liner forming material to form the liner while restraining the flow of moldable plastic between the sleeve and the cap, and while venting gas out of the liner space through the venting channels.

대표청구항 ▼

[ What is claimed is:] [1.] A method for forming a liner in a closure for a container comprising:forming a plastic closure cap having a circular top wall portion and a depending annular skirt portion depending from the top wall portion;depositing a quantity of moldable plastic in said cap;providing

[ What is claimed is:] [1.] A method for forming a liner in a closure for a container comprising:forming a plastic closure cap having a circular top wall portion and a depending annular skirt portion depending from the top wall portion;depositing a quantity of moldable plastic in said cap;providing a liner forming assembly having a liner tip and a liner sleeve, said liner tip being axially movable relative to said liner sleeve, said liner sleeve having a plurality of circumferentially spaced apart, radially oriented venting passages positioned on an outer surface thereof;advancing said assembly into said cap to engage said sleeve, adjacent to said venting passages, with said cap, to de a liner space; andadvancing said liner tip into said cap, relative to said liner sleeve, to compress said moldable plastic to form said liner while restraining the flow of moldable plastic between said sleeve and said cap, and while venting gas out of said liner space through said venting passages as said moldable plastic flows into said liner space.