DE3519291A1 - Verfahren zum homogenisieren und kuehlen der kunststoffschmelze, insbesondere einer mit einem triebmittel begasten kunststoff-schmelze, und extruder zu seiner ausuebung - Google Patents
Verfahren zum homogenisieren und kuehlen der kunststoffschmelze, insbesondere einer mit einem triebmittel begasten kunststoff-schmelze, und extruder zu seiner ausuebungInfo
- Publication number
- DE3519291A1 DE3519291A1 DE19853519291 DE3519291A DE3519291A1 DE 3519291 A1 DE3519291 A1 DE 3519291A1 DE 19853519291 DE19853519291 DE 19853519291 DE 3519291 A DE3519291 A DE 3519291A DE 3519291 A1 DE3519291 A1 DE 3519291A1
- Authority
- DE
- Germany
- Prior art keywords
- screw
- melt
- extruder
- core
- cross
- Prior art date
- 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.)
- Granted
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 58
- 229920003023 plastic Polymers 0.000 title claims abstract description 58
- 238000001816 cooling Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000004604 Blowing Agent Substances 0.000 title claims abstract description 6
- 239000000155 melt Substances 0.000 claims abstract description 81
- 230000033001 locomotion Effects 0.000 claims abstract description 30
- 238000013461 design Methods 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 230000010006 flight Effects 0.000 claims description 89
- 239000006260 foam Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 11
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 2
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012803 melt mixture Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
- B29B7/428—Parts or accessories, e.g. casings, feeding or discharging means
- B29B7/429—Screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
- B29B7/826—Apparatus therefor
-
- 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
- B29C48/56—Screws having grooves or cavities other than the thread or the channel
-
- 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
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
- B29C48/605—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw the thread being discontinuous
-
- 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
- B29C48/62—Screws characterised by the shape of the thread channel, e.g. U-shaped
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853519291 DE3519291A1 (de) | 1985-05-30 | 1985-05-30 | Verfahren zum homogenisieren und kuehlen der kunststoffschmelze, insbesondere einer mit einem triebmittel begasten kunststoff-schmelze, und extruder zu seiner ausuebung |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853519291 DE3519291A1 (de) | 1985-05-30 | 1985-05-30 | Verfahren zum homogenisieren und kuehlen der kunststoffschmelze, insbesondere einer mit einem triebmittel begasten kunststoff-schmelze, und extruder zu seiner ausuebung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3519291A1 true DE3519291A1 (de) | 1986-12-04 |
| DE3519291C2 DE3519291C2 (enrdf_load_stackoverflow) | 1989-07-13 |
Family
ID=6271942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853519291 Granted DE3519291A1 (de) | 1985-05-30 | 1985-05-30 | Verfahren zum homogenisieren und kuehlen der kunststoffschmelze, insbesondere einer mit einem triebmittel begasten kunststoff-schmelze, und extruder zu seiner ausuebung |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3519291A1 (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3741034A1 (de) * | 1987-05-25 | 1988-12-15 | Mitsubishi Heavy Ind Ltd | Plastifizierschnecke |
| EP0619173A1 (en) * | 1993-04-07 | 1994-10-12 | Zehev Tadmor | Screw element having shearing and scraping flights |
| EP1156918A4 (en) * | 1999-02-01 | 2002-05-08 | Rauwendaal Extrusion Eng Inc | SCREW EXTRUDER WITH IMPROVED DISPERSION MIXING ELEMENTS |
| WO2003084846A1 (de) * | 2002-04-10 | 2003-10-16 | Bühler AG | Mischer mit durchsatzglättung |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1207074B (de) * | 1959-12-31 | 1965-12-16 | Maillefer Sa | Verfahren und Vorrichtung zum Verarbeiten von thermoplastischen Kunststoffen in einer Schneckenpresse |
| US3368724A (en) * | 1965-03-18 | 1968-02-13 | Reifenhauser Kg Fa | Plasticizing-screw device |
| US3504400A (en) * | 1967-08-04 | 1970-04-07 | Vish Khim T I | Sesquithread feed worm for an extruder |
| DE1554761B2 (de) * | 1963-01-22 | 1972-02-17 | Lavorazione Materie Plastische L.M.P. S.p.A., Turm (Italien) | Schneckenpresse zum extrudieren thermoplastischer kunststoffe |
| DE2461320A1 (de) * | 1973-01-17 | 1976-07-08 | Exxon Research Engineering Co | Schraubenmischer |
| US4131368A (en) * | 1976-04-09 | 1978-12-26 | Iddon Brothers Limited | Scrolls for extruding machines |
| US4341474A (en) * | 1980-08-27 | 1982-07-27 | Wheeler Jr Norton C | Extruder screw |
-
1985
- 1985-05-30 DE DE19853519291 patent/DE3519291A1/de active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1207074B (de) * | 1959-12-31 | 1965-12-16 | Maillefer Sa | Verfahren und Vorrichtung zum Verarbeiten von thermoplastischen Kunststoffen in einer Schneckenpresse |
| DE1554761B2 (de) * | 1963-01-22 | 1972-02-17 | Lavorazione Materie Plastische L.M.P. S.p.A., Turm (Italien) | Schneckenpresse zum extrudieren thermoplastischer kunststoffe |
| US3368724A (en) * | 1965-03-18 | 1968-02-13 | Reifenhauser Kg Fa | Plasticizing-screw device |
| US3504400A (en) * | 1967-08-04 | 1970-04-07 | Vish Khim T I | Sesquithread feed worm for an extruder |
| DE2461320A1 (de) * | 1973-01-17 | 1976-07-08 | Exxon Research Engineering Co | Schraubenmischer |
| US4131368A (en) * | 1976-04-09 | 1978-12-26 | Iddon Brothers Limited | Scrolls for extruding machines |
| US4341474A (en) * | 1980-08-27 | 1982-07-27 | Wheeler Jr Norton C | Extruder screw |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3741034A1 (de) * | 1987-05-25 | 1988-12-15 | Mitsubishi Heavy Ind Ltd | Plastifizierschnecke |
| US5004352A (en) * | 1987-05-25 | 1991-04-02 | Mitsubishi Jukogyo Kabushiki Kaisha | Plasticizing screw |
| EP0619173A1 (en) * | 1993-04-07 | 1994-10-12 | Zehev Tadmor | Screw element having shearing and scraping flights |
| US5356208A (en) * | 1993-04-07 | 1994-10-18 | Zehev Tadmor | Screw element having shearing and scraping flights |
| EP1156918A4 (en) * | 1999-02-01 | 2002-05-08 | Rauwendaal Extrusion Eng Inc | SCREW EXTRUDER WITH IMPROVED DISPERSION MIXING ELEMENTS |
| WO2003084846A1 (de) * | 2002-04-10 | 2003-10-16 | Bühler AG | Mischer mit durchsatzglättung |
| US7255223B2 (en) | 2002-04-10 | 2007-08-14 | Buehler Ag | Mixture with a smooth throughput |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3519291C2 (enrdf_load_stackoverflow) | 1989-07-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8339 | Ceased/non-payment of the annual fee |