|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/339 ; 206/508 ; 206/518 ; 206/519|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 118 인용 특허 : 0|
A thermoplastic hinged container having stiffened side walls and having spaced channels in a shoulder/flange seal portion of the container base and mating stiffening lugs in an opposing lid portion to prevent warping of the container during closure and provide improved sealing.
In a semi-rigid thermoplastic container including base and lid members having uniformly thick, vertically fluted walls and a single uniformly thick living hinge joining the base and lid members along a straight edge thereof and having open container cavities facing upward when in an open condition, the improvement which comprises: a horizontal first flange portion formed along a top edge and extending around the periphery of the base member; a mating second flange portion formed along an opposing edge of the lid member, adapted for engagement with the fi...