ES444477A1 - Plasticized screw - Google Patents

Plasticized screw

Info

Publication number
ES444477A1
ES444477A1 ES444477A ES444477A ES444477A1 ES 444477 A1 ES444477 A1 ES 444477A1 ES 444477 A ES444477 A ES 444477A ES 444477 A ES444477 A ES 444477A ES 444477 A1 ES444477 A1 ES 444477A1
Authority
ES
Spain
Prior art keywords
cylinder
head
section
wall
plasticized 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
ES444477A
Other languages
Spanish (es)
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.)
SANDRETTO SpA
Original Assignee
SANDRETTO SpA
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 SANDRETTO SpA filed Critical SANDRETTO SpA
Publication of ES444477A1 publication Critical patent/ES444477A1/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/60—Screws
    • 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

Landscapes

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

Abstract

Plasticizer screw with laminating head, of the type consisting of a shaft provided with a projected helical profile that is inserted with a small gap between them, in a cylinder with heated walls, whose shaft rotates inside the cylinder, being characterized because such a tree has one end a head contained within the inner wall of said cylinder, between said head and this wall forming chambers of greater cross section separated by restricted passages of less cross section. (Machine-translation by Google Translate, not legally binding)
ES444477A 1975-10-07 1976-01-20 Plasticized screw Expired ES444477A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1302375A CH587115A5 (en) 1975-10-07 1975-10-07

Publications (1)

Publication Number Publication Date
ES444477A1 true ES444477A1 (en) 1977-09-16

Family

ID=4388612

Family Applications (1)

Application Number Title Priority Date Filing Date
ES444477A Expired ES444477A1 (en) 1975-10-07 1976-01-20 Plasticized screw

Country Status (7)

Country Link
JP (1) JPS5245659A (en)
CH (1) CH587115A5 (en)
DE (1) DE2604520A1 (en)
ES (1) ES444477A1 (en)
FR (1) FR2327049A1 (en)
IT (1) IT1052687B (en)
NL (1) NL7600221A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595850A (en) * 1978-05-31 1981-08-19 Hpm Corp Extruder with multi-channel wave screw
JPS6179087A (en) * 1984-09-25 1986-04-22 三井東圧化学株式会社 Resin pipe for transferring fluid
EP0546085A4 (en) * 1990-08-27 1993-09-15 E.I. Du Pont De Nemours And Company Direct fabrication
US5114658A (en) * 1990-11-15 1992-05-19 E. I. Du Pont De Nemours And Company One step preparation and fabrication of partially grafted flexible thermoplastic compositions
EP1438166A4 (en) * 2000-09-01 2011-04-27 James D Fogarty Thermoplastic foam extrusion assembly
WO2020254467A1 (en) * 2019-06-21 2020-12-24 Lego A/S An extruder screw, an injection molding apparatus and a method of injection molding

Also Published As

Publication number Publication date
NL7600221A (en) 1977-04-13
IT1052687B (en) 1981-07-20
FR2327049B3 (en) 1978-10-13
CH587115A5 (en) 1977-04-29
DE2604520A1 (en) 1977-04-21
FR2327049A1 (en) 1977-05-06
JPS5245659A (en) 1977-04-11

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