RO61925A - PROCESS FOR MANUFACTURING PLASTIC PERFORATED TUBES USED SPECIFICALLY FOR DRAINAGE AND FILTERING AND INSTALLATION FOR CARRYING OUT THE PROCESS - Google Patents

PROCESS FOR MANUFACTURING PLASTIC PERFORATED TUBES USED SPECIFICALLY FOR DRAINAGE AND FILTERING AND INSTALLATION FOR CARRYING OUT THE PROCESS

Info

Publication number
RO61925A
RO61925A RO6293570A RO6293570A RO61925A RO 61925 A RO61925 A RO 61925A RO 6293570 A RO6293570 A RO 6293570A RO 6293570 A RO6293570 A RO 6293570A RO 61925 A RO61925 A RO 61925A
Authority
RO
Romania
Prior art keywords
drainage
filtering
installation
carrying
used specifically
Prior art date
Application number
RO6293570A
Other languages
French (fr)
Romanian (ro)
Inventor
Jan Borkowski
Andrzej Ruminschi
Bogdan Neimeczewski
Helena Kurnatovwska
Joachim Grzesik
Original Assignee
Inst Tworzyw Sztucznych
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 Inst Tworzyw Sztucznych filed Critical Inst Tworzyw Sztucznych
Publication of RO61925A publication Critical patent/RO61925A/en

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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
    • B29C53/587—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features having a non-uniform wall-structure, e.g. with inserts, perforations, locally concentrated reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • 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
    • B29L2031/737—Articles provided with holes, e.g. grids, sieves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Filtering Materials (AREA)
RO6293570A 1969-03-29 1970-03-30 PROCESS FOR MANUFACTURING PLASTIC PERFORATED TUBES USED SPECIFICALLY FOR DRAINAGE AND FILTERING AND INSTALLATION FOR CARRYING OUT THE PROCESS RO61925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL13265769A PL88468B1 (en) 1969-03-29 1969-03-29

Publications (1)

Publication Number Publication Date
RO61925A true RO61925A (en) 1977-11-15

Family

ID=19950487

Family Applications (1)

Application Number Title Priority Date Filing Date
RO6293570A RO61925A (en) 1969-03-29 1970-03-30 PROCESS FOR MANUFACTURING PLASTIC PERFORATED TUBES USED SPECIFICALLY FOR DRAINAGE AND FILTERING AND INSTALLATION FOR CARRYING OUT THE PROCESS

Country Status (4)

Country Link
DE (1) DE2014796B2 (en)
FR (1) FR2040097A5 (en)
PL (1) PL88468B1 (en)
RO (1) RO61925A (en)

Also Published As

Publication number Publication date
PL88468B1 (en) 1976-09-30
DE2014796A1 (en) 1971-11-04
FR2040097A5 (en) 1971-01-15
DE2014796B2 (en) 1975-02-13

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