GB976575A - Improvements in and relating to the extrusion of thermoplastic materials - Google Patents

Improvements in and relating to the extrusion of thermoplastic materials

Info

Publication number
GB976575A
GB976575A GB11544/61A GB1154461A GB976575A GB 976575 A GB976575 A GB 976575A GB 11544/61 A GB11544/61 A GB 11544/61A GB 1154461 A GB1154461 A GB 1154461A GB 976575 A GB976575 A GB 976575A
Authority
GB
United Kingdom
Prior art keywords
extrusion
feed duct
slot
thermoplastic material
axis
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
GB11544/61A
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.)
Dyna-Plastik-Werk GmbH
Original Assignee
Dyna-Plastik-Werk GmbH
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 Dyna-Plastik-Werk GmbH filed Critical Dyna-Plastik-Werk GmbH
Publication of GB976575A publication Critical patent/GB976575A/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
    • B29C48/03—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
    • 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
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • 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
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle

Landscapes

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

Abstract

976,575. Extrusion machines. DYNAPLASTIK-WERK G.m.b.H. March 29, 1961 [March 30, 1960], No. 11544/61. Heading B5A. In a method of extruding thermoplastic material in sheet form by means of an extrusion machine having an elongated feed duct communicating with an elongated extrusion slot the flow of material through the feed duct towards the slot has superimposed thereon concomitant oppositely directed distributive movements along the longitudinal axis of the feed duct, whereby the material is distributed towards both ends of the slot. As shown in the machine illustrated inlet ducts 4 supply thermoplastic material to a feed duct 2 wherein a worm 5 rotates about its own axis 6 and in planetary movement about the axis 10 of the feed duct 2. Formed on the worm 5 are pairs of oppositely handed threads 11, 12 so that the thermoplastic material is distributed towards both ends of an extrusion slot 3. A pair of diametrically opposed worms may be used (Fig. 3, not shown).
GB11544/61A 1960-03-30 1961-03-29 Improvements in and relating to the extrusion of thermoplastic materials Expired GB976575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ0017893 1960-03-30

Publications (1)

Publication Number Publication Date
GB976575A true GB976575A (en) 1964-11-25

Family

ID=7199689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11544/61A Expired GB976575A (en) 1960-03-30 1961-03-29 Improvements in and relating to the extrusion of thermoplastic materials

Country Status (4)

Country Link
CH (1) CH390534A (en)
FR (1) FR1288990A (en)
GB (1) GB976575A (en)
NL (1) NL262382A (en)

Also Published As

Publication number Publication date
NL262382A (en) 1900-01-01
FR1288990A (en) 1962-03-30
CH390534A (en) 1965-04-15

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