FR2213847A1 - Extrusion die for multi-channelled profiles - with pneumatic jets for balancing partition wall stresses - Google Patents
Extrusion die for multi-channelled profiles - with pneumatic jets for balancing partition wall stressesInfo
- Publication number
- FR2213847A1 FR2213847A1 FR7300939A FR7300939A FR2213847A1 FR 2213847 A1 FR2213847 A1 FR 2213847A1 FR 7300939 A FR7300939 A FR 7300939A FR 7300939 A FR7300939 A FR 7300939A FR 2213847 A1 FR2213847 A1 FR 2213847A1
- Authority
- FR
- France
- Prior art keywords
- extrusion die
- die
- partition wall
- extrudate
- profiles
- 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
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
- B29C48/03—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
- B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/07—Flat, e.g. panels
-
- 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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fats And Perfumes (AREA)
Abstract
Extrusion die for making profiles or board with several internal longitudinal channels, has the die mandrel also drilled, to provide an air jet for each profile channel to maintain a shape stabilising internal pressure until the extrudate firms up. Pref. the incoming air is preheated (to 60-80 degrees C) during its passage into the die or by an ancillary heat exchanger. The jets provide internal pressurisation which is readily adjusted to counteract contraction stresses induced by variable haul off conditions, (in preference to quench treatments which may render the extrudate too cold and stiff to accept subsequent ancillary shaping operations, e.g. corrugation).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7300939A FR2213847A1 (en) | 1973-01-11 | 1973-01-11 | Extrusion die for multi-channelled profiles - with pneumatic jets for balancing partition wall stresses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7300939A FR2213847A1 (en) | 1973-01-11 | 1973-01-11 | Extrusion die for multi-channelled profiles - with pneumatic jets for balancing partition wall stresses |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2213847A1 true FR2213847A1 (en) | 1974-08-09 |
FR2213847B1 FR2213847B1 (en) | 1976-11-05 |
Family
ID=9113156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7300939A Granted FR2213847A1 (en) | 1973-01-11 | 1973-01-11 | Extrusion die for multi-channelled profiles - with pneumatic jets for balancing partition wall stresses |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2213847A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4371326A (en) * | 1979-01-26 | 1983-02-01 | Mcalister Roy E | Apparatus for making plastic solar panel structure |
EP1316407A1 (en) * | 2001-11-30 | 2003-06-04 | Rodeca GmbH | Wall- or roofpanel and method and extrusion die for manufacturing the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3274315A (en) * | 1963-02-25 | 1966-09-20 | Tokan Kogyo Co Ltd | Process for unitized construction of synthetic resin board or cylinder |
-
1973
- 1973-01-11 FR FR7300939A patent/FR2213847A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3274315A (en) * | 1963-02-25 | 1966-09-20 | Tokan Kogyo Co Ltd | Process for unitized construction of synthetic resin board or cylinder |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4371326A (en) * | 1979-01-26 | 1983-02-01 | Mcalister Roy E | Apparatus for making plastic solar panel structure |
EP1316407A1 (en) * | 2001-11-30 | 2003-06-04 | Rodeca GmbH | Wall- or roofpanel and method and extrusion die for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
FR2213847B1 (en) | 1976-11-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |