Lid Assembly for Airtight Container

Abstract

Disclosed herein is a lid assembly for an airtight container in which an airtight container product may be directed in various manners by having an improved lid assembly such that a lid body and locking blade portions are integrally formed of different materials, and Tritan resin which has high transparency and is an eco-friendly material may be effectively applied to the lid assembly. To this end, the lid assembly for an airtight container includes a lid body ( 210 ) injection-molded with synthetic resin so as to cover an upper portion of an airtight container ( 100 ), the lid body ( 210 ) having a slot-shaped embedded groove ( 211 ) provided in a band form along an upper surface edge thereof and a packing groove ( 212 ) provided in a band form along a lower surface edge thereof, a lid-flange member ( 220 ) injection-molded with synthetic resin so as to surround an edge of the lid body ( 210 ) and have a ring shape after the lid-flange member ( 220 ) is inserted and arranged in a synthetic resin injection mold, the lid-flange member ( 220 ) including an inside hooking jaw ( 221 ) provided on an inner side thereof such that the inside hooking jaw ( 221 ) is hooked by an inside of the embedded groove ( 211 ) of the lid body ( 210 ), a flange ( 223 ) provided on an outer side thereof such that the flange ( 223 ) surrounds the edge of the lid body ( 210 ) and has an outside hooking jaw ( 222 ) hooked by an outer wall lower end of the packing groove ( 212 ), and locking blades ( 226 ) integrally formed at regular intervals along an edge of the flange ( 223 ) through snap-hinge portions ( 224 ) and having locking jaws ( 225 ) elastically hooked by a hooking protrusion ( 110 ) of the airtight container ( 100 ), and a silicon packing ( 230 ) installed in the packing groove ( 212 ) of the lid body ( 210 ) so as to come into close contact with the opened upper portion of the airtight container ( 100 ).

1 . A lid assembly for an airtight container, capable of opening and closing an airtight container ( 100 ) having a hooking protrusion ( 110 ) provided on an opened upper edge thereof, the lid assembly ( 200 ) comprising:
 a lid body ( 210 ) injection-molded with synthetic resin so as to cover an upper portion of the airtight container ( 100 ), the lid body ( 210 ) having a slot-shaped embedded groove ( 211 ) provided in a band form along an upper surface edge thereof and a packing groove ( 212 ) provided in a band form along a lower surface edge thereof;   a lid-flange member ( 220 ) injection-molded with synthetic resin so as to surround an edge of the lid body ( 210 ) and have a ring shape after the lid-flange member ( 220 ) is inserted and arranged in a synthetic resin injection mold, the lid-flange member ( 220 ) comprising an inside hooking jaw ( 221 ) provided on an inner side thereof such that the inside hooking jaw ( 221 ) is hooked by an inside of the embedded groove ( 211 ) of the lid body ( 210 ), a flange ( 223 ) provided on an outer side thereof such that the flange ( 223 ) surrounds the edge of the lid body ( 210 ) and has an outside hooking jaw ( 222 ) hooked by an outer wall lower end of the packing groove ( 212 ), and locking blades ( 226 ) integrally formed at regular intervals along an edge of the flange ( 223 ) through snap-hinge portions ( 224 ) and having locking jaws ( 225 ) elastically hooked by the hooking protrusion ( 110 ) of the airtight container ( 100 ); and   a silicon packing ( 230 ) installed in the packing groove ( 212 ) of the lid body ( 210 ) so as to come into close contact with the opened upper portion of the airtight container ( 100 ).   
     
     
         2 . The lid assembly according to  claim 1 , wherein:
 the lid body ( 210 ) of the lid assembly ( 200 ) is formed of Tritan resin; and   the lid-flange member ( 220 ) of the lid assembly ( 200 ) is formed of polypropylene resin.