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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||425/311 ; 264/142 ; 264/179 ; 264/180|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 11 인용 특허 : 18|
The present invention is directed to apparatus for compounding and pelletizing of chemical foaming agents in a high melt resin carrier and producing unique, uniform encapsulated and pelletized chemical foaming concentrates. More specifically, the present invention is directed to the compounding, encapsulating and pelletizing in a high melt resin carrier a highly loaded concentration (5 to 70 wt %) of foaming agents which include an endothermic foaming agent, an exothermic foaming agent or hybrid combinations of these two such that when incorporated into ...
An apparatus for the production of an encapsulated chemical foaming concentrate in a thermoplastic resin which comprises: a thermoplastic extruder said extruder including a mixing zone with means for venting water from said mixing zone, said extruder further including a compounding zone in which said extruder compounds a mixture of a thermoplastic resin carrier and foaming agents, said compounding zone having means to maintain positive pressure within the compounding zone of said extruder such that there is no substantial reduction in pressure, said extr...