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Publication date
Application filedfiledCritical
Priority to JP1990073049UpriorityCriticalpatent/JPH0430910U/ja
Publication of JPH0430910UpublicationCriticalpatent/JPH0430910U/ja
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C48/25—Component parts, details or accessories; Auxiliary operations
B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
B29C48/50—Details of extruders
B29C48/505—Screws
B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Extrusion Moulding Of Plastics Or The Like
(AREA)
Mixers Of The Rotary Stirring Type
(AREA)
Processing And Handling Of Plastics And Other Materials For Molding In General
(AREA)
