|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B32B-001/02 B32B-001/06 B32B-031/04 B32B-031/20|
|미국특허분류(USC)||156/087 ; 156/146 ; 156/196 ; 156/245 ; 156/276 ; 156/285 ; 156/286 ; 156/292 ; 156/308.4 ; 156/382 ; 220/042.4 ; 220/421 ; 220/422 ; 422/102 ; 428/069|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 26 인용 특허 : 0|
Sheets of gas impermeable plastics material are vacuum-formed to produce semi-rigid trays or shells each having side walls extending to form a peripheral flange. The formed shells define a cavity which is filled with an insulation media such as an open cell rigid foam material or a dry silica powder. In one embodiment, a media filled shell and a gas impermeable plastic cover sheet or partially assembled inner and outer shells separated by the media, are placed within a vacuum chamber, and overlapping edge portions or flanges are sealed by a moveable plat...
[ The invention having thus been described, the following is claimed:] [1.] A method of efficiently producing an insulated container and for minimizing heat transfer through the container, comprising the steps of thermoforming two sheets of gas impermeable plastics material each having a substantially uniform thickness to form an inner shell and an outer shell each having a bottom wall and side walls with the side walls extending to form an outwardly projecting peripheral flange, positioning the inner shell within the outer shell with the corresponding f...