FR2377878A1 - Perfectionnement aux tetes d'extrusion pour films tubulaires en matiere plastique - Google Patents
Perfectionnement aux tetes d'extrusion pour films tubulaires en matiere plastiqueInfo
- Publication number
- FR2377878A1 FR2377878A1 FR7701668A FR7701668A FR2377878A1 FR 2377878 A1 FR2377878 A1 FR 2377878A1 FR 7701668 A FR7701668 A FR 7701668A FR 7701668 A FR7701668 A FR 7701668A FR 2377878 A1 FR2377878 A1 FR 2377878A1
- Authority
- FR
- France
- Prior art keywords
- flow
- mandrel
- die
- weld lines
- baffles
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- 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
-
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Perfectionnement aux têtes d'extrusion pour films tubulaires en matière plastique. La tête d'extrusion à alimentation latérale comporte entre le canal d'admission 42 et le poinçon central 43 deux bagues intermédiaires 45 et 46 définissant une chambre annuaire avant 54 de hauteur progressivement décroissante communiquant par un passage de section variable 56 avec une chambre arrière 57. La matiere plastique y remonte le long du poinçon 43 en ébauche tubulaire puis est divisée en flux élémentaires par les filets 59 d'un manchon 44; ces flux se recombinent en nappe régulière au niveau des lèvres 52, 53. Application : extrusion de films tubulaires.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7701668A FR2377878A1 (fr) | 1977-01-21 | 1977-01-21 | Perfectionnement aux tetes d'extrusion pour films tubulaires en matiere plastique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7701668A FR2377878A1 (fr) | 1977-01-21 | 1977-01-21 | Perfectionnement aux tetes d'extrusion pour films tubulaires en matiere plastique |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2377878A1 true FR2377878A1 (fr) | 1978-08-18 |
FR2377878B3 FR2377878B3 (fr) | 1979-09-21 |
Family
ID=9185751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7701668A Granted FR2377878A1 (fr) | 1977-01-21 | 1977-01-21 | Perfectionnement aux tetes d'extrusion pour films tubulaires en matiere plastique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2377878A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990011880A1 (fr) * | 1989-04-01 | 1990-10-18 | Erich Beck | Outil a filiere de façonnage de matieres visqueuses |
US5531952A (en) * | 1994-12-27 | 1996-07-02 | James River Paper Company, Inc. | Method and apparatus for forming tubular plastic film |
CN114633454A (zh) * | 2022-03-26 | 2022-06-17 | 江苏君华特种工程塑料制品有限公司 | 一种peek管材生产用挤出机头及peek管材生产工艺 |
-
1977
- 1977-01-21 FR FR7701668A patent/FR2377878A1/fr active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990011880A1 (fr) * | 1989-04-01 | 1990-10-18 | Erich Beck | Outil a filiere de façonnage de matieres visqueuses |
US5531952A (en) * | 1994-12-27 | 1996-07-02 | James River Paper Company, Inc. | Method and apparatus for forming tubular plastic film |
CN114633454A (zh) * | 2022-03-26 | 2022-06-17 | 江苏君华特种工程塑料制品有限公司 | 一种peek管材生产用挤出机头及peek管材生产工艺 |
Also Published As
Publication number | Publication date |
---|---|
FR2377878B3 (fr) | 1979-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CA | Change of address | ||
TP | Transmission of property |