|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/270 ; 215/16 ; 215/252 ; 215/256|
|발명자 / 주소|
|인용정보||피인용 횟수 : 47 인용 특허 : 0|
Disposable container closures of low gas and vapor permeability, high-impact resistant, cleanly combustible thermoplastics fusable to the rim of container openings to seal the same but readily manually opened by integral tab positioned to commence tears along score lines promoting and utilizing the unexpected relatively low resistance of the otherwise tough materials to continued tearing once a tear is started.
A container comprised of a closure of cleanly combustible, high impact-resistant thermoplastic having low gas and vapor permeability and lower tear-resistAnce after rupture, said closure being united to the rim of the mouth of a container body, an opening tab having a free portion and a portion fused to said closure, said closure having a rupture line of lesser section defining the periphery of an opening therein, and said tab being positioned with respect to said line whereby the forces of a pull on the free portion of said tab concentrate at a rupturab...