초록 ▼

Improvements in inner and outer closures for containers are disclosed. The outer closure is characterized by a cap member having a top wall, a side wall and a base adapted for sealing to the neck of a container. Two score lines extend across the top wall with finger gripping means attached at the ap

Improvements in inner and outer closures for containers are disclosed. The outer closure is characterized by a cap member having a top wall, a side wall and a base adapted for sealing to the neck of a container. Two score lines extend across the top wall with finger gripping means attached at the apex where the two score lines meet. One score line extends down the side wall to connect with a third score line near the base which extends completely around the cap. The other score line extends down the side wall to an intermediate position and diverges away and terminates a short distance from the one score line. By pulling on the finger gripping means, the entire cap member above the third score line is removed in one piece. The inner closure comprises a plastic member sealed at its periphery to the mouth of the neck and includes a vertically aligned spike-entry port and an additive port which is oriented at an angle away from the entry port. The spike-entry port in an improved version comprises a spike-retaining collar which is joined to the body of the closure by a downward sloping web section which functions so as to cause the collar to grip an inserted spike more firmly to prevent accidental withdrawal of the spike. An improved version of an inner closure and container neck is also disclosed which includes particulate retaining means to prevent particulates formed during frictional welding of the closure to the neck from entering the container.

대표청구항 ▼

A tear-open closure for enclosing a neck having an opening on a container comprising a cap having a base, a side wall and a top wall, the base having means for sealing engagement with an annular projection on the neck of the container below the opening, score lines defining rupturable thinned sectio

A tear-open closure for enclosing a neck having an opening on a container comprising a cap having a base, a side wall and a top wall, the base having means for sealing engagement with an annular projection on the neck of the container below the opening, score lines defining rupturable thinned sections in the cap, said score lines including a first score line commencing at an intermediate point on the top wall and extending across the top wall and down the side wall to meet a second score line, said second score line extending circumferentially all the way around the side wall, a third score line joining the point where the first score line commences and extending across the top wall generally contiguous with the first score line when extending down the side wall and diverging from the first score line to terminate a short distance from the first score line at an intermediate point on the side wall substantially above the second score line; and finger gripping means projecting from the top wall adapted for initiating rupture of said first and third score lines at the point where they meet.