Pet container cap with simultaneously separable end ring

Abstract

A PET container cap, which provides tight blocking for preservation of contents in a state of being provided on and coupled to an injection part and provides a sealing function enabling awareness of openness, is proposed. The cap includes a cap body which is provided on and coupled to the injection part so as to provide tight blocking for preservation of contents; and an end ring which is integrally formed at the lower side of the cap body, is restricted by an annular protrusion formed at the lower side of the outer circumference of the injection part, exhibits a sealing function enabling grasping of openness of the cap body, and causes transformation in a separation process of the cap body by a user, so that the end ring is simultaneously separated together with the cap body from the injection part.

1 . A PET container cap with a simultaneously separable end ring, which provides tight blocking for preservation of contents in a state of being provided on and coupled to an injection part and provides a sealing function enabling awareness of openness, the cap comprising:
 a cap body provided on and coupled to the injection part to provide tight blocking for preservation of the contents; and   an end ring integrally formed on a lower side of the cap body, restricted by an annular protrusion formed on a lower side of an outer circumference of the injection part, exhibiting a sealing function enabling grasping of openness of the cap body, and causing transformation in a separation process of the cap body by a user, so the end ring is simultaneously separated together with the cap body from the injection part.   
     
     
         2 . The PET container cap of  claim 1 , wherein the cap body further comprises:
 a spiral protrusion formed on an inner circumference of the cap body to correspond to a spiral fastening protrusion formed on the outer circumference of the injection part; and   a knurling part formed on an outer circumference of the cap body to prevent a slip when a user holds the cap with his or her hand and rotates the cap clockwise/counterclockwise.   
     
     
         3 . The PET container cap of  claim 1 , wherein the end ring comprises:
 an interference protrusion formed on an inner circumference of the end ring to engage with a restraint protrusion of the injection part when the cap body is coupled to the injection part;   a connecting projection integrally connected to a portion of a lower end of the cap body to cause transformation in a separation process of the cap body; and   a sealing projection integrally connected to another portion of the lower end of the cap body to be fractured in the separation process of the cap body and to enable the openness of the cap body to be identified.   
     
     
         4 . The PET container cap of  claim 3 , wherein the end ring comprises a plurality of cut parts that are cut long to extend from an uppermost end to a lowermost end, are inclined in one direction, and are formed at regular intervals to cause degradation of a ring-shaped preservation ability as a gap is increased by the connecting projection that maintains a connection state with the cap body in the separation process of the cap body. 
     
     
         5 . The PET container cap of  claim 4 , wherein the connecting projection is connected to the cap body to increase the gap of the cut part in the separation process of the cap body, protrudes from an upper end, and is connected to the lower end of the cap body while extending long from a first end of the cut part to a predetermined range, and
 the sealing projection is connected to the cap body, protrudes from an upper end to exhibit the sealing function that enables the openness of the cap body to be identified as the sealing protrusion is fractured in the separation process of the cap body, and is connected to a lower end of the cap body while extending short from a second end of the cut part to a predetermined range.   
     
     
         6 . The PET container cap of  claim 4 , wherein the cut part is cut long to extend from an uppermost end to a position adjacent to a lowermost end and thereby leads to transformation that causes a restriction force of the connecting projection to be lost by the restraint protrusion formed on the outer circumference of the injection part as the gap is increased by an upward movement of the connecting projection connected to the cap body in the separation process of the cap body, and the cut part is formed in a slope type having an inclination in one direction. 
     
     
         7 . A PET container cap with a simultaneously separable end ring, which provides tight blocking for preservation of contents in a state of being provided on and coupled to an injection part and provides a sealing function enabling awareness of openness, the cap comprising:
 a cap body provided on and coupled to the injection part to provide tight blocking for preservation of the contents; and   an end ring integrally formed on a lower side of the cap body, restricted by an annular protrusion protruding from a lower side of an outer circumference of the injection part, exhibiting a sealing function enabling grasping of openness of the cap body, and causing transformation in a separation process of the cap body by a user, so the end ring is separated together with the cap body from the injection part,   wherein the end ring comprises:   an interference protrusion restricted by the annular protrusion when the cap body is coupled to the injection part;   a plurality of transformation parts transformed to flare out, thus allowing the interference protrusion to pass over the annular protrusion when the cap body is separated from the injection part, due to a “ ”-shaped cut part extending horizontally and vertically from a boundary of the cap body; and   a sealing projection protruding from an upper end of each of the transformation parts to be integrally connected to a lower end of the cap body, fractured in the separation process of the cap body, and enabling the openness of the cap body to be identified depending on a fractured state.   
     
     
         8 . The PET container cap of  claim 7 , wherein the interference protrusion protrudes from an inner surface of the transformation part to be restricted by the annular protrusion, has an inclination in which a protruding end thereof is inclined upwards, and is bent downwards by the annular protrusion in the process of separating the cap body from the injection part, thus causing the transformation of the transformation part and allowing the interference protrusion to pass over the annular protrusion when the transformation part is transformed. 
     
     
         9 . The PET container cap of  claim 7 , wherein the interference protrusion is in a shape of a simple protrusion that causes the transformation of the transformation part in the process of separating the cap body from the injection part and allows the interference protrusion to pass over the annular protrusion when the transformation part is transformed. 
     
     
         10 . A PET container cap with a simultaneously separable end ring, which provides tight blocking for preservation of contents in a state of being provided on and coupled to an injection part and provides a sealing function enabling awareness of openness, the cap comprising:
 a cap body provided on and coupled to the injection part to provide tight blocking for preservation of the contents;   an end ring integrally formed on a lower side of the cap body, restricted by an annular protrusion protruding from a lower side of an outer circumference of the injection part, exhibiting a sealing function enabling grasping of openness of the cap body, and causing transformation in a separation process of the cap body by a user, so the end ring is separated together with the cap body from the injection part, the cap body and the end ring being separated from each other by a cut part;   a plurality of interference protrusions formed on an inner circumference of a boundary between the cap body and the end ring to protrude at regular intervals, connecting the cap body and the end ring, restricted by the annular protrusion when the cap body is coupled to the injection part, and changed in shape to pass over the annular protrusion in the process of separating the cap body; and   a sealing projection formed on the inner circumference of the boundary, connecting a lower end of the cap body and an upper end of the end ring, fractured in the separation process of the cap body, and enabling the openness of the cap body to be identified depending on the fractured state.   
     
     
         11 . The PET container cap of  claim 10 , wherein the interference protrusion is integrally connected at both ends thereof to the lower end of the cap body and the upper end of the end ring, and is bent to a side to be restricted by the annular protrusion, thus having a shape of “ ”, and is spread out by the annular protrusion in the process of separating the cap body from the injection part, so the cap body and the end ring are separated from each other and thereby the sealing projection is fractured and interference of the annular protrusion may be avoided to allow the end ring to be simultaneously separated.