Air tight packaging container for easy leakage test and leakage test method and apparatus using same

1. An airtight packaging container to facilitate testing for a leak, the airtight packaging container comprising:

a cosmetic container ( 30 );

an airtight lid ( 60 ) installed onto the cosmetic container ( 30 ) in order to prevent cosmetics (c) stored therein, the cosmetics including a volatile ingredient, from being evaporated or volatilized; and

a leakage test member ( 70 ) formed on the airtight lid ( 60 ),

wherein:

the airtight lid ( 60 ) includes:

a sealing plate ( 62 ) for covering the cosmetic container ( 30 ); and

a sealing protrusion wheel ( 64 ) formed on a lower surface of the sealing plate ( 62 ) and press-inserted into an inlet of the cosmetic container ( 30 );

the leakage test member ( 70 ) has a cylindrical shape and is provided about an outer circumferential side thereof with a coupling groove ( 72 );

the sealing plate ( 62 ) of the airtight lid ( 60 ) is provided with a coupling hole ( 82 ) into which the leakage test member ( 70 ) is coupled;

a coupling protrusion wheel ( 84 ) is formed circumferentially about and protrudes from an inner wall of the coupling hole ( 82 );

the coupling protrusion wheel ( 84 ) of the sealing plate ( 62 ) is airtightly coupled into the coupling groove ( 72 ) of the leakage test member ( 70 ), so that the leakage test member ( 70 ) is airtightly coupled to the sealing plate ( 62 ); and

the leakage test member ( 70 ) includes an upper ring rim ( 74 ) positioned over and extending beyond the coupling groove ( 72 ); and a lower ring rim ( 75 ) positioned below and extending beyond the coupling groove ( 72 ),

wherein an upper step groove ( 86 ) and a lower step groove ( 88 ) are formed by the coupling protrusion wheel ( 84 ),

wherein a diameter of the upper ring rim ( 74 ) is greater than a diameter of the lower ring rim ( 75 ),

wherein the upper ring rim ( 74 ) is received in the upper step groove ( 86 ), and

wherein the upper ring rim ( 74 ) is substantially within a same plane as the sealing plate ( 62 ).

2. The airtight packaging container of claim 1 , wherein the leakage test member ( 70 ) is formed of one of elastomer, silicon rubber and NBR rubber, the leakage test member being elastically restorable.

3. The airtight packaging container of claim 1 , wherein the lower ring rim ( 75 ) is provided at a periphery of a lower end thereof with a taper ( 76 ) to facilitate coupling of the leakage test member ( 70 ) into the coupling hole ( 82 ) of the sealing plate ( 62 ).

4. The airtight packaging container of claim 1 , wherein the leakage test member ( 70 ) has a thickness in a range of 1.5 mm to 5.0 mm.

5. The airtight packaging container of claim 1 wherein the leakage test member ( 70 ) has a diameter in a range of 3.0 mm to 8.0 mm.

6. The airtight packaging container of claim 1 , wherein the airtight lid ( 60 ) is hinge coupled to the cosmetic container ( 30 ),

a coupling protrusion ( 63 ) diagonally formed on a hinged part of the airtight lid ( 60 ) is coupled to a coupling groove ( 36 ) formed in the cosmetic container ( 30 ),

the cosmetic container ( 30 ) is closed with the airtight lid ( 60 ) by coupling the coupling protrusion ( 63 ) of the airtight lid ( 60 ) into the coupling groove ( 36 ) of the cosmetic container ( 30 ), and

when force in a range of 3 kgf to 5 kgf is applied to the airtight lid ( 60 ), the airtight lid ( 60 ) is opened from the cosmetic container ( 30 ).