|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||264/521 ; 264/520 ; 264/524 ; 264/530|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 111 인용 특허 : 3|
A collapse resistant polyester container is provided for hot fill applications employing product fill temperatures up to about 190°F. (87.8°C.) or more. The container has at least one region which is thermoelastically deformable inwardly after the container is hot filled and sealed to offset the pressure forces which tend to collapse the container as the contents cool and create an internal vacuum. The thermoelastic region is preferably formed in a two step molding process in which the region is formed and heat set at a first position and then reformed o...
A method for producing a collapse resistant, molecularly oriented, heat set polyester container for use in hot fill applications, said method comprising the steps of: (a) forming in a mold cavity a molecularly oriented polyester container having at least one preselected region which projects inwardly into said container in a first configuration; (b) heating said oriented container while in contact with the cavity walls at a temperature sufficient to induce rapid crystallization of the polyester to form a heat set container, at least said region being hea...