|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||425/1331 ; 425/171 ; 425/188 ; 425/380|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 27 인용 특허 : 1|
The block comprises a central channel (2) which feeds a first molten plastic, and at least one secondary channel (5, 10) which feeds a different molten plastic and connects to the central channel (2) upstream of the die, the central channel (2) in the connection zone, being equipped with a flat portion (11) which alters the cross-section of the channel, the said flat portion (11) being mounted in a removable piece (12) coaxial with the central channel and arranged in a guide tube (13) which intersects the central channel (2) and runs through the feed blo...
Feed block for a flat coextrusion die, comprising a central channel possessing an inlet which can be connected to a first feed source of molten thermoplastic, an outlet which can be connected to the flat coextrusion die and at least one secondary channel possessing an inlet which can be connected to a second source of molten thermoplastic, a distribution torus surrounding the central channel and an outlet connected to the central channel upstream of the flat coextrusion die, in which the central channel, in the zone where it connects to at least one seco...