FR2214574A1 - Continuous perforated plastic tubes - made by co extrusion and fusion of annular arrays of strip profiles - Google Patents

Continuous perforated plastic tubes - made by co extrusion and fusion of annular arrays of strip profiles

Info

Publication number
FR2214574A1
FR2214574A1 FR7301989A FR7301989A FR2214574A1 FR 2214574 A1 FR2214574 A1 FR 2214574A1 FR 7301989 A FR7301989 A FR 7301989A FR 7301989 A FR7301989 A FR 7301989A FR 2214574 A1 FR2214574 A1 FR 2214574A1
Authority
FR
France
Prior art keywords
extrusion
annular arrays
fusion
array
strip profiles
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
Application number
FR7301989A
Other languages
French (fr)
Other versions
FR2214574B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NORD TECH EXTRUSION
Original Assignee
NORD TECH EXTRUSION
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 NORD TECH EXTRUSION filed Critical NORD TECH EXTRUSION
Priority to FR7301989A priority Critical patent/FR2214574A1/en
Publication of FR2214574A1 publication Critical patent/FR2214574A1/en
Application granted granted Critical
Publication of FR2214574B1 publication Critical patent/FR2214574B1/fr
Granted legal-status Critical Current

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
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • 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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/301—Extrusion nozzles or dies having reciprocating, oscillating or rotating parts
    • 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
    • B29L2028/00—Nets or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Filtering Materials (AREA)

Abstract

Tubular structures made by coaxial extrusions of >=2 annular arrays of parallel strips where the progression of >=1 layer of strips is inclined w.r.t. the tube axis. Prodn of the arrays being via an extrusion die with two coaxial plates where one or both can rotate. Pref. one array is defined by the interfaces of the two die plates, and the interface is conical so that the inner array diverges into contact with the under-side of the outer array shortly after both emerge from the dies. Esp. for mfr. of porous cylinders of polyprolylene for supporting filter element involving radial flow. The (non-circular) strip profiles and their contact areas are readily made sufficiently great to produce stiff, crush resistant structures.
FR7301989A 1973-01-19 1973-01-19 Continuous perforated plastic tubes - made by co extrusion and fusion of annular arrays of strip profiles Granted FR2214574A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7301989A FR2214574A1 (en) 1973-01-19 1973-01-19 Continuous perforated plastic tubes - made by co extrusion and fusion of annular arrays of strip profiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7301989A FR2214574A1 (en) 1973-01-19 1973-01-19 Continuous perforated plastic tubes - made by co extrusion and fusion of annular arrays of strip profiles

Publications (2)

Publication Number Publication Date
FR2214574A1 true FR2214574A1 (en) 1974-08-19
FR2214574B1 FR2214574B1 (en) 1977-11-10

Family

ID=9113573

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7301989A Granted FR2214574A1 (en) 1973-01-19 1973-01-19 Continuous perforated plastic tubes - made by co extrusion and fusion of annular arrays of strip profiles

Country Status (1)

Country Link
FR (1) FR2214574A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1189863A (en) * 1955-11-09 1959-10-07 Plastic Textile Access Ltd Improvements relating to tissue production
FR1225348A (en) * 1958-05-27 1960-06-30 British Xylonite Co Ltd Improvements in methods and devices for making perforated articles in thermoplastic materials
US3538545A (en) * 1968-11-25 1970-11-10 Jesse J Smith Plastic mesh extrusion dies
US3674898A (en) * 1971-02-24 1972-07-04 Conwed Corp Method for bias cutting a tubular net

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1189863A (en) * 1955-11-09 1959-10-07 Plastic Textile Access Ltd Improvements relating to tissue production
FR1225348A (en) * 1958-05-27 1960-06-30 British Xylonite Co Ltd Improvements in methods and devices for making perforated articles in thermoplastic materials
US3538545A (en) * 1968-11-25 1970-11-10 Jesse J Smith Plastic mesh extrusion dies
US3674898A (en) * 1971-02-24 1972-07-04 Conwed Corp Method for bias cutting a tubular net

Also Published As

Publication number Publication date
FR2214574B1 (en) 1977-11-10

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Legal Events

Date Code Title Description
ST Notification of lapse