|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B32B-037/00 B32B-005/16 B29C-044/12 B29C-044/44 B32B-005/20 B32B-027/06 B32B-027/32 B29L-031/00 B29C-051/26|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 0 인용 특허 : 54|
In at least one embodiment, a plastic article comprises a first plastic layer having a periphery and defining a cavity. An expanded polymer particle core is formed in-situ and heat-bonded to the cavity. The expanded polymer particle core has an apparent bulk density ranging from 1 lb/ft3 to 20 lb/ft3. The article supports a dynamic load or static load exceeding 1.3 lbf/in2.
1. A method for forming a plastic article, the steps comprising: providing a first heated plastic layer to a first mold section having a first molding surface to form a first molded skin;thermoforming the first heated plastic layer to first molding surface;providing a second heated plastic layer to a second mold section having a second molding surface to form a second molded skin;thermoforming the second heated plastic layer to the second molding surface;moving the first and second mold sections into cooperation with one another, connecting the first and...