|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||428/357 ; 428/134 ; 428/139 ; 206/521|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 26 인용 특허 : 8|
The invention relates to a mold apparatus and a process for forming a lid latching mechanism in a thermoplastic container. The lid latching mechanism features a large, trapezoidally-shaped opening hole. The trapezoidal shape has been found to reduce the amount of tearing that can occur along the edges of an opening formed during the thermoforming process. The opening is created by the engagement between a fixed shear key mounted in a first mold member and a movable shear key which has a trapezoidally-shaped cutting surface and is mounted in a second mold...
A thermoformed container, comprising: a first portion including a bottom wall and a plurality of first side walls extending upwardly from said bottom wall, said first portion including a latch flap extending upwardly from one of said first side walls, said latch flap including a generally flat portion and at least one button protruding outwardly from said generally flat portion, said button being spaced away from a top edge of said latch flap and being trapezoidally-shaped in cross-section where said button intersects said flat portion; and a second port...