DK490877A - Fremgangsmaade til fremstilling af mikroporoese hulprofiler navnlig roer - Google Patents
Fremgangsmaade til fremstilling af mikroporoese hulprofiler navnlig roerInfo
- Publication number
- DK490877A DK490877A DK490877A DK490877A DK490877A DK 490877 A DK490877 A DK 490877A DK 490877 A DK490877 A DK 490877A DK 490877 A DK490877 A DK 490877A DK 490877 A DK490877 A DK 490877A
- Authority
- DK
- Denmark
- Prior art keywords
- procedure
- making microporous
- hole profiles
- namely pipe
- microporous hole
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
- E02B11/005—Drainage conduits
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
- B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular die
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B13/00—Irrigation ditches, i.e. gravity flow, open channel water distribution systems
-
- 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
- B29L2023/00—Tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Molding Of Porous Articles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762650718 DE2650718A1 (de) | 1976-11-05 | 1976-11-05 | Verfahren zum herstellen von mikroporoesen hohlprofilen, insbesondere rohren, zum zu- und abfuehren von stroemenden stoffen wie gase oder fluessigkeiten |
Publications (1)
Publication Number | Publication Date |
---|---|
DK490877A true DK490877A (da) | 1978-05-06 |
Family
ID=5992536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK490877A DK490877A (da) | 1976-11-05 | 1977-11-04 | Fremgangsmaade til fremstilling af mikroporoese hulprofiler navnlig roer |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE860462A (fr) |
DE (1) | DE2650718A1 (fr) |
DK (1) | DK490877A (fr) |
ES (1) | ES463870A1 (fr) |
FR (1) | FR2369919A1 (fr) |
NL (1) | NL7712094A (fr) |
SE (1) | SE7712439L (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3272913D1 (en) * | 1981-10-22 | 1986-10-02 | Ici Plc | Production of pvc irrigation pipe |
DE4325879C3 (de) * | 1993-08-02 | 1999-05-20 | Depron Bv | Folie aus einem thermoplastischen Kunststoffschaum, Verfahren zu ihrer Herstellung sowie ihre Verwendung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2807505A (en) * | 1956-07-02 | 1957-09-24 | Shuford Mills | Soil soaking devices |
DE1629423A1 (de) * | 1966-04-02 | 1971-01-14 | Gruenzweig & Hartmann | Verfahren zur Herstellung von Kunstharz-Schaumstoffen und Verwendung eines nach diesem Verfahren gefertigten Rohres |
US3502753A (en) * | 1966-05-13 | 1970-03-24 | Owens Illinois Inc | Extruding foamed plastics |
BE716366A (fr) * | 1967-06-22 | 1968-11-04 | ||
US3558753A (en) * | 1967-11-13 | 1971-01-26 | Int Plastics | Method of producing a porous resin by withdrawing gas from a foam extrudate while it is in a semi-molten state |
-
1976
- 1976-11-05 DE DE19762650718 patent/DE2650718A1/de not_active Ceased
-
1977
- 1977-11-02 NL NL7712094A patent/NL7712094A/xx not_active Application Discontinuation
- 1977-11-03 SE SE7712439A patent/SE7712439L/xx unknown
- 1977-11-04 DK DK490877A patent/DK490877A/da unknown
- 1977-11-04 BE BE2056401A patent/BE860462A/fr unknown
- 1977-11-04 FR FR7733288A patent/FR2369919A1/fr not_active Withdrawn
- 1977-11-04 ES ES463870A patent/ES463870A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7712094A (nl) | 1978-05-09 |
ES463870A1 (es) | 1978-07-01 |
SE7712439L (sv) | 1978-05-06 |
FR2369919A1 (fr) | 1978-06-02 |
BE860462A (fr) | 1978-05-05 |
DE2650718A1 (de) | 1978-05-11 |
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