|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||210/236 ; 210/329 ; 210/DIG ; 15|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 17 인용 특허 : 0|
A simplified screen changer is provided which is particularly suitable for the extrusion of synthetic resinous thermoplastics. Screens are supported in a recessed movable plate. The screen on the upstream side is sealed against leakage by means of an extrusion pressure actuated sealing ring. The apparatus is of simple and rugged construction.
A screen changing apparatus, particularly suited and adapted for use in the extrusion of heat-plastified synthetic resinous extrudable material, the apparatus comprising a conduit, the conduit having an upstream end and a downstream end, and a passage therebetween, a plate-like element slidably disposed within the conduit and extending transversely to the passage, first and second recesses defined in the plate-like element, the plate-like element being in sliding engagement with the conduit toward the dowstream end, and when forced toward the downstream ...