ES8300570A1 - Method and apparatus for the extrusion of cross-linked plastics products - Google Patents

Method and apparatus for the extrusion of cross-linked plastics products

Info

Publication number
ES8300570A1
ES8300570A1 ES508641A ES508641A ES8300570A1 ES 8300570 A1 ES8300570 A1 ES 8300570A1 ES 508641 A ES508641 A ES 508641A ES 508641 A ES508641 A ES 508641A ES 8300570 A1 ES8300570 A1 ES 8300570A1
Authority
ES
Spain
Prior art keywords
cross
linking
extruder
main extruder
screw
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.)
Expired
Application number
ES508641A
Other languages
Spanish (es)
Other versions
ES508641A0 (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.)
PROPLAST Oy
Original Assignee
PROPLAST Oy
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 PROPLAST Oy filed Critical PROPLAST Oy
Publication of ES508641A0 publication Critical patent/ES508641A0/en
Publication of ES8300570A1 publication Critical patent/ES8300570A1/en
Expired 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • 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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • 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
    • 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
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • 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
    • B29K2301/00—Use of unspecified macromolecular compounds as reinforcement
    • B29K2301/10—Thermosetting resins

Landscapes

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

Abstract

The apparatus comprises a main extruder (1-4) and an auxiliary extruder (5-8) placed at the outer end of the feeding screw (4) of the main extruder. By means of the main extruder (1-4), a plastics raw- material substantially free from cross- linking agents is extruded at an elevated temperature and, by means of the auxiliary extruder (5-8), a rather small quantity of a concentrated mixture of the molten plastic raw-material and of a cross- linking agent is injected into the molten plastic raw-material mass at a lower temperature. Into the mass extruded by means of the main extruder (1-4), some quantity of an activator accelerating the cross- linking and/or of an inhibitor retarding the cross-linking may be added. The injection is effected either adjacent the downstream end of the screw (4), or between the end of the screw (4) and a mixing means (14-18).
ES508641A 1980-12-19 1981-12-17 Method and apparatus for the extrusion of cross-linked plastics products Expired ES8300570A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI803966 1980-12-19

Publications (2)

Publication Number Publication Date
ES508641A0 ES508641A0 (en) 1982-11-01
ES8300570A1 true ES8300570A1 (en) 1982-11-01

Family

ID=8513997

Family Applications (1)

Application Number Title Priority Date Filing Date
ES508641A Expired ES8300570A1 (en) 1980-12-19 1981-12-17 Method and apparatus for the extrusion of cross-linked plastics products

Country Status (9)

Country Link
JP (1) JPS57128529A (en)
DE (1) DE3149333A1 (en)
DK (1) DK541781A (en)
ES (1) ES8300570A1 (en)
FR (1) FR2500789A1 (en)
GB (1) GB2090559A (en)
IT (1) IT8149930A0 (en)
NL (1) NL8105692A (en)
SE (1) SE8107539L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607438B2 (en) * 1984-04-11 1989-12-29 Pierre Bonnel DEVICE FOR PRODUCING STRETCHABLE POLYETHYLENE FILMS FOR PALLETISING
US4857250A (en) * 1984-04-13 1989-08-15 Union Carbide Corporation One-extrusion method of making a shaped crosslinkable extruded polymeric product
DE3702833A1 (en) * 1987-01-30 1988-08-11 Peter Julius METHOD AND DEVICE FOR PRODUCING RUBBER COMPOUNDS
DE19646394C1 (en) * 1996-11-07 1998-04-30 Roehm Gmbh Extrusion system and process for extrusion with minimized color change times

Also Published As

Publication number Publication date
DE3149333A1 (en) 1982-07-15
GB2090559A (en) 1982-07-14
JPS57128529A (en) 1982-08-10
DK541781A (en) 1982-06-20
FR2500789A1 (en) 1982-09-03
IT8149930A0 (en) 1981-12-17
NL8105692A (en) 1982-07-16
ES508641A0 (en) 1982-11-01
SE8107539L (en) 1982-06-20

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