|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B65D-030/04 B65D-033/14 B65D-033/16 B65D-033/36|
|미국특허분류(USC)||383/24 ; 383/36 ; 383/41 ; 383/67|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 53 인용 특허 : 6|
A collapsible bag and method of making it from blanks of a flexible material which are cut from an elongate web substantially without wasting any material between adjacent blanks. Each blank has a circumferentially continuous central portion and four substantially identical isosceles triangular portions at each end of the blank. Adjacent sides of adjacent triangular portions are connected together to provide, when the bag is expanded or filled, generally square ends which are interconnected by generally rectangular side walls. An access opening is provid...
A collapsible bag which when filled has a pair of spaced apart ends each being generally square with four side wall portions extending therebetween, which comprises; a tubular blank of one piece of flexible material having a circumferentially continuous central portion and four substantially identical isosceles triangular portions adjacent each end, each triangular portion having a pair of sides extending from the central portion toward an apex of the triangular portion, said sides of each triangle being essentially at a right angle to each other, connec...