FR2420416A1 - Appareil de refroidissement interieur de pellicules tubulaires en matiere plastique extrudee - Google Patents
Appareil de refroidissement interieur de pellicules tubulaires en matiere plastique extrudeeInfo
- Publication number
- FR2420416A1 FR2420416A1 FR7808696A FR7808696A FR2420416A1 FR 2420416 A1 FR2420416 A1 FR 2420416A1 FR 7808696 A FR7808696 A FR 7808696A FR 7808696 A FR7808696 A FR 7808696A FR 2420416 A1 FR2420416 A1 FR 2420416A1
- Authority
- FR
- France
- Prior art keywords
- efficient cooling
- air
- high speed
- thermoplastic film
- air nozzles
- 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.)
- Withdrawn
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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/9125—Cooling of hollow articles of tubular films internally
-
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Appareil de refroidissement intérieur de pellicules tubulaires en matière plastique extrudée. L'appareil comporte deux conduites pour l'alimentation et la sortie de l'air de refroidissement, coaxiales et à l'intérieur de la pellicule tubulaire; les buses annulaires de soufflage de l'air sont axialement écartées et sont reliées, par l'intermédiaire de chaque distributeur tubulaire à la conduite d'alimentation de l'air. Des canaux d'aspiration s'ouvrent sur un coté vers la pellicule tubulaire et sur l'autre côté dans la conduite de sortie, en regard d'une buse convergente dans la direction de l'écoulement d'air.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7808696A FR2420416A1 (fr) | 1978-03-24 | 1978-03-24 | Appareil de refroidissement interieur de pellicules tubulaires en matiere plastique extrudee |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7808696A FR2420416A1 (fr) | 1978-03-24 | 1978-03-24 | Appareil de refroidissement interieur de pellicules tubulaires en matiere plastique extrudee |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2420416A1 true FR2420416A1 (fr) | 1979-10-19 |
Family
ID=9206278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7808696A Withdrawn FR2420416A1 (fr) | 1978-03-24 | 1978-03-24 | Appareil de refroidissement interieur de pellicules tubulaires en matiere plastique extrudee |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2420416A1 (fr) |
-
1978
- 1978-03-24 FR FR7808696A patent/FR2420416A1/fr not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |