Disclosed is a plastic cap useful for steadfastly maintaining a sealed state created in a container having a mouth with an opening by sealing the opening with a sealing member. The cap has a cap main body and a cover portion integrated with the main body via at least one bridge portion. The main body has a base portion and a top wall. The bridge portion is formed of a synthetic plastic filled in at least one fusion-bonding hole having a diameter of from 0.3 to 3 mm and arranged extending through at least one, preferably one of the main body or cover portion such that the main body and cover portion are integrally fusion-bonded by the bridge portion and the cover portion can be separated from the main body by breaking the bridge portion with hands. A production method of the plastic cap is also disclosed.

The present disclosure belongs to the field of packaging, and provides a rotary sealed packaging container which comprises an outer lid, a hollow inner core and a container body, wherein the inner core is mounted on an opening part of the container body so that the inner core can relatively move in axial direction of the container body and cannot relatively rotate in the circumferential direction, and the outer lid is mounted on the opening part so that the outer lid cannot relatively move in the axial direction and can relatively move in the circumferential direction; the outer lid is internally provided with a hollow thread part, an inner thread is arranged on the inner wall of the thread part, an outer thread is arranged on the outer wall of the inner core, the inner thread of the thread part matches with the outer thread of the inner core.

The present disclosure belongs to the field of packaging, and provides a rotary sealed packaging container which comprises an outer lid, a hollow inner core and a container body, wherein the inner core is mounted on an opening part of the container body so that the inner core can relatively move in axial direction of the container body and cannot relatively rotate in the circumferential direction, and the outer lid is mounted on the opening part so that the outer lid cannot relatively move in the axial direction and can relatively move in the circumferential direction; the outer lid is internally provided with a hollow thread part, an inner thread is arranged on the inner wall of the thread part, an outer thread is arranged on the outer wall of the inner core, the inner thread of the thread part matches with the outer thread of the inner core.

Paint tester and methods of testing paint using the paint tester. The paint tester having a sealed receptacle containing paint, a foam applicator, and a seal cutter. The methods comprising rotating the seal cutter with respect to the receptacle until one or more teeth will cut into and break a seal on the receptacle, applying inward pressure to an exterior surface of a receptacle wall causing paint to flow from the receptacle through a channel exit of the receptacle, through a conduit defined in the seal cutter, out a conduit exit encircled by crenulations, through pores in the applicator, and onto an exterior surface of the applicator, and touching the exterior surface of the applicator to a surface upon which paint is desired.

When a known lid member was merely applied to a bottle that contains ink, there was room for improvement in terms of the operation of the lid member and the way how to bring attention to the handling thereof.

A bottle set is provided that includes: a bottle that includes an ink container that contains ink, and an outflow port through which the ink in the ink container flows out to the outside; and a lid member that is configured to attach to and detach from the bottle, and is configured to cover the outflow port in a state of being attached to the bottle. The lid member includes a colored portion that has optical transparency and is colored with a color corresponding to a type of the ink contained in the ink container in at least a portion of the lid member.

A bottle comprises a body having an opening in an upper end for receiving fluid; a membrane provided to seal across the opening; and a receptacle sealingly secured to a surface of the membrane within the body. Separation of the membrane from the opening in the receptacle releases the receptacle such that the contents of the receptacle are released into the body.

When a known lid member was merely applied to a bottle that contains ink, there was room for improvement in terms of the operation of the lid member and the way how to bring attention to the handling thereof. A bottle set is provided that includes: a bottle that includes an ink container that contains ink, and an outflow port through which the ink in the ink container flows out to the outside; and a lid member that is configured to attach to and detach from the bottle, and is configured to cover the outflow port in a state of being attached to the bottle. The lid member includes a colored portion that has optical transparency and is colored with a color corresponding to a type of the ink contained in the ink container in at least a portion of the lid member.

A bottle comprises a body having an opening in an upper end for receiving fluid; a membrane provided to seal across the opening; and a receptacle sealingly secured to a surface of the membrane within the body. Separation of the membrane from the opening in the receptacle releases the receptacle such that the contents of the receptacle are released into the body.

Disclosed is a cap arrangement for a bottle. The cap arrangement comprises a cap having a flat portion, and a hollow portion having a first end and an opposite second end. The hollow portion extends vertically from a periphery of the flat portion. One or more internal threads are arranged on the second end, of the hollow portion, away from the first end. The cap arrangement further comprises a mouth portion of the bottle, wherein the mouth portion comprises one or more complementary external threads arranged away from an opening of the mouth portion of the bottle. The one or more external threads and the one or more internal threads allow threadable engagement between the cap and the mouth portion away from the opening of the bottle.

The invention relates to a closing assembly for containers, such as bottles and/or jars, which allows a hermetically isolated additive to be dispensed into the inside of said container, via a cartridge, characterised in that the assembly comprises a closing device having a main body (3) with joining means that allow detachable connection to a removable cartridge (4) storing the additive to be released, where said removable cartridge (4) houses a piercing projection (5) that can be actuated by direct contact with an actuator (2) connected to said main body (3).