Closure With Rotation-Inhibiting Projection

Patent metadata

Field	Value
Publication number	US-2020331663-A1
Application number	US-201916388522-A
Country	US
Kind code	A1
Filing date	Apr 18, 2019
Priority date	Apr 18, 2019
Publication date	Oct 22, 2020
Grant date	—

Abstract

A closure includes first and second closure portions. The first closure portion includes a polymeric top wall portion and an annular skirt portion. The skirt portion includes exterior and interior surfaces. The interior surface includes an internal thread formation for mating engagement with an external thread formation of a container and at least one rotation-inhibiting projection. The rotation-inhibiting projection is located to contact the external thread formation. The rotation-inhibiting projection is in the general shape of the letter “C” prior to engagement with the external thread formation of the container. The second closure portion includes a polymeric tamper-evident band.

First claim

1 . A closure comprising:
a first closure portion including:
a polymeric top wall portion;
a polymeric annular skirt portion depending from the polymeric top wall portion, the annular skirt portion including an exterior surface and an interior surface, the interior surface of the annular skirt portion including (a) an internal thread formation for mating engagement with an external thread formation of a container and (b) at least one rotation-inhibiting projection, the at least one rotation-inhibiting projection being located to contact the external thread formation of the container, the at least one rotation-inhibiting projection being in the general shape of the letter “C” prior to engagement with the external thread formation of the container; and
a second closure portion including:
a polymeric tamper-evident band depending from and being at least partially detachably connected to the polymeric annular skirt portion by a frangible connection,
wherein the closure has an unopened position and an opened position, the opened position occurring when the tamper-evident band has been at least partially broken from the polymeric annular skirt portion.

2 . The closure of claim 1 , wherein the at least one rotation-inhibiting projection is a plurality of rotation-inhibiting projections.

3 . The closure of claim 2 , wherein the plurality of rotation-inhibiting projections is from about 4 to about 6 rotation-inhibiting projections.

4 . The closure of claim 1 , wherein the at least one rotation-inhibiting projection is located generally axially to the internal thread formation.

5 . The closure of claim 1 , wherein the at least one rotation-inhibiting projection is spaced from the internal thread formation.

6 . The closure of claim 1 , wherein the internal thread formation includes a first closure lead and a second closure lead.

7 . The closure of claim 1 , wherein the closure is a one-piece closure.

8 . The closure of claim 1 , wherein the closure comprises polyolefins.

9 . The closure of claim 1 , wherein the first closure portion further includes a polymeric continuous plug seal depending from the polymeric top wall portion, the continuous plug seal being spaced from an interior surface of the polymeric annular skirt portion.

10 . The closure of claim 1 , wherein the first closure portion further includes a polymeric outer seal depending from the polymeric top wall portion.

11 . A closure comprising:
a first closure portion including:
a polymeric top wall portion;
a polymeric annular skirt portion depending from the polymeric top wall portion, the annular skirt portion including an exterior surface and an interior surface, the interior surface of the annular skirt portion including (a) an internal thread formation for mating engagement with an external thread formation of a container and (b) at least one rotation-inhibiting projection, the at least one rotation-inhibiting projection being located to contact the external thread formation of the container, the at least one rotation-inhibiting projection including a first projection, a second projection and a valley located between the first and second projections prior to engagement with the external thread formation of the container, the projections extending from the interior surface of the annular skirt portion; and
a second closure portion including:
a polymeric tamper-evident band depending from and being at least partially detachably connected to the polymeric annular skirt portion by a frangible connection,
wherein the closure has an unopened position and an opened position, the opened position occurring when the tamper-evident band has been at least partially broken from the polymeric annular skirt portion.

12 . The closure of claim 11 , wherein the at least one rotation-inhibiting projection is a plurality of rotation-inhibiting projections.

13 . The closure of claim 12 , wherein the plurality of rotation-inhibiting projections is from about 4 to about 6 rotation-inhibiting projections.

14 . The closure of claim 11 , wherein the at least one rotation-inhibiting projection is located generally axially to the internal thread formation.

15 . The closure of claim 11 , wherein the at least one rotation-inhibiting projection is spaced from the internal thread formation.

16 . The closure of claim 11 , wherein the closure comprises polyolefins.

17 . A method of forming a package comprising:
providing a closure including a first closure portion and a second closure portion, the first closure portion including:
a polymeric top wall portion;
a polymeric annular skirt portion depending from the polymeric top wall portion, the annular skirt portion includes an exterior surface and an interior surface, the interior surface of the annular skirt portion includes (a) an internal thread formation for mating engagement with an external thread formation of a container and (b) at least one rotation-inhibiting projection, the at least one rotation-inhibiting projection being located to contact the external thread formation of the container, and
the second closure portion including:
a polymeric tamper-evident band depending from and being at least partially detachably connected to the polymeric annular skirt portion by a frangible connection,
wherein the closure has an unopened position and an opened position, the opened position occurring when the tamper-evident band has been at least partially broken from the polymeric annular skirt portion; providing a container including a neck portion that includes the external thread formation, the external thread formation including a first finish lead such that interference is formed by a surface area of the at least one rotation-inhibiting projection and the surface area of the first finish lead, the total amount of interference between a surface area of the at least one rotation-inhibiting projection and the surface area of the first finish lead is from about 10% to about 30%; and threading the closure and the container to form the package.

18 . The method of claim 17 , wherein the at least one rotation-inhibiting projection is in the general shape of the letter “C” prior to engagement with the external thread formation of the container.

19 . The method of claim 17 , wherein the at least one rotation-inhibiting projection includes a first projection, a second projection and a valley located between the first and second projections prior to engagement with the external thread formation of the container.

20 - 21 . (canceled)

22 . The method of claim 17 , wherein the total amount of interference between the surface area of the at least one rotation-inhibiting projection and the surface area of the first finish lead is from about 10 to about 25%.

23 . The method of claim 19 , wherein the depth of the valley is from about 5 to about 25% of the depth of the finish thread.

24 . The method of claim 19 , wherein the depth of the valley is from about 10 to about 15% of the depth of the finish thread.

Assignees

• Closure Systems Int Inc

Inventors

• Edie John C
• Mccandless Thomas
• Moll William

Classifications

• B65D41/3423

  with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt (B65D41/3404 takes precedence) · CPC title

• B65D41/0407

  with integral sealing means (B65D41/065 takes precedence) · CPC title

• B65D2251/06

  Special configurations; Closures simulating or provided with another item, e.g. puppet, animal, vehicle, building (B65D81/366 takes precedence) · CPC title

• B65D41/0421

  and combined with integral sealing means contacting other surfaces of a container neck · CPC title

• B65D41/3447

  the tamper element being integrally connected to the closure by means of bridges · CPC title