ZA791349B - A method and apparatus for the continuous extrusion and blowing of thin films of plastic material in particular rigid pvc - Google Patents
A method and apparatus for the continuous extrusion and blowing of thin films of plastic material in particular rigid pvcInfo
- Publication number
- ZA791349B ZA791349B ZA791349A ZA791349A ZA791349B ZA 791349 B ZA791349 B ZA 791349B ZA 791349 A ZA791349 A ZA 791349A ZA 791349 A ZA791349 A ZA 791349A ZA 791349 B ZA791349 B ZA 791349B
- Authority
- ZA
- South Africa
- Prior art keywords
- blowing
- plastic material
- thin films
- continuous extrusion
- rigid pvc
- Prior art date
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
- B29C48/256—Exchangeable extruder parts
- B29C48/2564—Screw parts
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- 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
- B29C48/501—Extruder feed section
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH332378A CH620635A5 (en) | 1978-03-29 | 1978-03-29 | Process and device for the continuous extrusion and blowing of thin films of plastic material, especially of rigid PVC |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA791349B true ZA791349B (en) | 1980-04-30 |
Family
ID=4253488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA791349A ZA791349B (en) | 1978-03-29 | 1979-03-21 | A method and apparatus for the continuous extrusion and blowing of thin films of plastic material in particular rigid pvc |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH620635A5 (en) |
ZA (1) | ZA791349B (en) |
-
1978
- 1978-03-29 CH CH332378A patent/CH620635A5/en not_active IP Right Cessation
-
1979
- 1979-03-21 ZA ZA791349A patent/ZA791349B/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH620635A5 (en) | 1980-12-15 |
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