Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Petrochemical Industries LtdfiledCriticalMitsui Petrochemical Industries Ltd
Priority to JP50031844ApriorityCriticalpatent/JPS5850184B2/ja
Publication of JPS51107363ApublicationCriticalpatent/JPS51107363A/ja
Publication of JPS5850184B2publicationCriticalpatent/JPS5850184B2/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
B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products
(AREA)