JPS4878274A - - Google Patents
Info
- Publication number
- JPS4878274A JPS4878274A JP47008171A JP817172A JPS4878274A JP S4878274 A JPS4878274 A JP S4878274A JP 47008171 A JP47008171 A JP 47008171A JP 817172 A JP817172 A JP 817172A JP S4878274 A JPS4878274 A JP S4878274A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47008171A JPS4878274A (en) | 1972-01-21 | 1972-01-21 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47008171A JPS4878274A (en) | 1972-01-21 | 1972-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4878274A true JPS4878274A (en) | 1973-10-20 |
Family
ID=11685869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP47008171A Pending JPS4878274A (en) | 1972-01-21 | 1972-01-21 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS4878274A (en) |
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1972
- 1972-01-21 JP JP47008171A patent/JPS4878274A/ja active Pending