NL7712094A - PROCESS FOR THE MANUFACTURE OF MICROPOROUS, HOLLOW PROFILES, IN PARTICULAR PIPES, FOR THE SUPPLY AND DISCHARGE OF FLOWING PRODUCTS, SUCH AS GASES OR LIQUIDS. - Google Patents

PROCESS FOR THE MANUFACTURE OF MICROPOROUS, HOLLOW PROFILES, IN PARTICULAR PIPES, FOR THE SUPPLY AND DISCHARGE OF FLOWING PRODUCTS, SUCH AS GASES OR LIQUIDS.

Info

Publication number
NL7712094A
NL7712094A NL7712094A NL7712094A NL7712094A NL 7712094 A NL7712094 A NL 7712094A NL 7712094 A NL7712094 A NL 7712094A NL 7712094 A NL7712094 A NL 7712094A NL 7712094 A NL7712094 A NL 7712094A
Authority
NL
Netherlands
Prior art keywords
microporous
liquids
gases
manufacture
discharge
Prior art date
Application number
NL7712094A
Other languages
Dutch (nl)
Original Assignee
Bayer Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of NL7712094A publication Critical patent/NL7712094A/en

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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
NL7712094A 1976-11-05 1977-11-02 PROCESS FOR THE MANUFACTURE OF MICROPOROUS, HOLLOW PROFILES, IN PARTICULAR PIPES, FOR THE SUPPLY AND DISCHARGE OF FLOWING PRODUCTS, SUCH AS GASES OR LIQUIDS. NL7712094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762650718 DE2650718A1 (en) 1976-11-05 1976-11-05 PROCESS FOR MANUFACTURING MICROPOROUS HOLLOW PROFILES, IN PARTICULAR PIPES, FOR INPUT AND REMOVAL OF FLOWING SUBSTANCES SUCH AS GASES OR LIQUIDS

Publications (1)

Publication Number Publication Date
NL7712094A true NL7712094A (en) 1978-05-09

Family

ID=5992536

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7712094A NL7712094A (en) 1976-11-05 1977-11-02 PROCESS FOR THE MANUFACTURE OF MICROPOROUS, HOLLOW PROFILES, IN PARTICULAR PIPES, FOR THE SUPPLY AND DISCHARGE OF FLOWING PRODUCTS, SUCH AS GASES OR LIQUIDS.

Country Status (7)

Country Link
BE (1) BE860462A (en)
DE (1) DE2650718A1 (en)
DK (1) DK490877A (en)
ES (1) ES463870A1 (en)
FR (1) FR2369919A1 (en)
NL (1) NL7712094A (en)
SE (1) SE7712439L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE21649T1 (en) * 1981-10-22 1986-09-15 Ici Plc METHOD OF MAKING A PVC IRRIGATION PIPE.
DE4325879C3 (en) * 1993-08-02 1999-05-20 Depron Bv Film made of a thermoplastic foam, process for its production and its use

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2807505A (en) * 1956-07-02 1957-09-24 Shuford Mills Soil soaking devices
DE1629423A1 (en) * 1966-04-02 1971-01-14 Gruenzweig & Hartmann Process for the production of synthetic resin foams and use of a pipe produced by this process
US3502753A (en) * 1966-05-13 1970-03-24 Owens Illinois Inc Extruding foamed plastics
BE716366A (en) * 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

Also Published As

Publication number Publication date
BE860462A (en) 1978-05-05
SE7712439L (en) 1978-05-06
DE2650718A1 (en) 1978-05-11
FR2369919A1 (en) 1978-06-02
ES463870A1 (en) 1978-07-01
DK490877A (en) 1978-05-06

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed