FR2203707A1 - Plastic net material - manufactured by extrusion through reciprocating dies - Google Patents

Plastic net material - manufactured by extrusion through reciprocating dies

Info

Publication number
FR2203707A1
FR2203707A1 FR7237402A FR7237402A FR2203707A1 FR 2203707 A1 FR2203707 A1 FR 2203707A1 FR 7237402 A FR7237402 A FR 7237402A FR 7237402 A FR7237402 A FR 7237402A FR 2203707 A1 FR2203707 A1 FR 2203707A1
Authority
FR
France
Prior art keywords
dies
streams
extrusion
manufactured
extruded
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
FR7237402A
Other languages
French (fr)
Other versions
FR2203707B1 (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.)
Conwed Corp
Original Assignee
Conwed Corp
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 Conwed Corp filed Critical Conwed Corp
Priority to FR7237402A priority Critical patent/FR2203707A1/en
Publication of FR2203707A1 publication Critical patent/FR2203707A1/en
Application granted granted Critical
Publication of FR2203707B1 publication Critical patent/FR2203707B1/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
    • 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
    • B29C48/03—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
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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)

Abstract

A thermoplastic polymer such as polypropylene is melt extruded under pressure through a series of die orifices to form 'net-like' structures. One set of dies is arranged either in a circular pattern or in a side-by-side relationship and the plastic extruded from them. Separate plastic streams are extruded independently from other dies so that these second streams cross the first set in a plane normal to it. The separate streams are allowed to set at the points of contact so giving the net-like pattern. To further facilitate the operation at least one of the dies reciprocates vertically. The dimensions and spacings of the strands may be controlled by altering the orifice size and die positions. In an extreme case sheet like products can be produced having a series of longitudinal protruding ribs.
FR7237402A 1972-10-20 1972-10-20 Plastic net material - manufactured by extrusion through reciprocating dies Granted FR2203707A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7237402A FR2203707A1 (en) 1972-10-20 1972-10-20 Plastic net material - manufactured by extrusion through reciprocating dies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7237402A FR2203707A1 (en) 1972-10-20 1972-10-20 Plastic net material - manufactured by extrusion through reciprocating dies

Publications (2)

Publication Number Publication Date
FR2203707A1 true FR2203707A1 (en) 1974-05-17
FR2203707B1 FR2203707B1 (en) 1975-11-21

Family

ID=9106016

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7237402A Granted FR2203707A1 (en) 1972-10-20 1972-10-20 Plastic net material - manufactured by extrusion through reciprocating dies

Country Status (1)

Country Link
FR (1) FR2203707A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580261A (en) * 1967-06-07 1969-09-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580261A (en) * 1967-06-07 1969-09-05

Also Published As

Publication number Publication date
FR2203707B1 (en) 1975-11-21

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse