GB1375980A - Extrusion dies - Google Patents

Extrusion dies

Info

Publication number
GB1375980A
GB1375980A GB6100671A GB6100671A GB1375980A GB 1375980 A GB1375980 A GB 1375980A GB 6100671 A GB6100671 A GB 6100671A GB 6100671 A GB6100671 A GB 6100671A GB 1375980 A GB1375980 A GB 1375980A
Authority
GB
United Kingdom
Prior art keywords
die
orifices
conduit
passages
fed
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
GB6100671A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1375980A publication Critical patent/GB1375980A/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
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • 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

Landscapes

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

Abstract

1375980 Extrusion dies FARBWERKE HOECHST AG 31 Dec 1971 [2 Jan 1971] 61006/71 Heading B5A Two thermoplastic tubes are extruded in opposite directions from a die head having opposing die orifices fed from a single extruder (not shown) through a conduit 51. The conduit 51 leads into annular chambers 4 connected by holes 33 to die passages 32. The annular die orifices are formed between bushes 12 and mandrels 2 which are attached to a common support member 3 fixed within the easing 1. Air is fed through the passages 6 separately to the interior of each tubular extrudate to inflate or merely support them. Separate temperature is provided for the central portion and the two regions adjacent the extrusion orifices.
GB6100671A 1971-01-02 1971-12-31 Extrusion dies Expired GB1375980A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712100095 DE2100095A1 (en) 1971-01-02 1971-01-02 Double head for the extrusion of hollow strands

Publications (1)

Publication Number Publication Date
GB1375980A true GB1375980A (en) 1974-12-04

Family

ID=5795130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6100671A Expired GB1375980A (en) 1971-01-02 1971-12-31 Extrusion dies

Country Status (6)

Country Link
AT (1) AT326897B (en)
CH (1) CH535116A (en)
DE (1) DE2100095A1 (en)
FR (1) FR2120182A1 (en)
GB (1) GB1375980A (en)
IT (1) IT944649B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5067885A (en) * 1988-06-17 1991-11-26 Gencorp Inc. Rapid change die assembly
US5110276A (en) * 1989-12-28 1992-05-05 Farnsworth John T Extrusion die assembly

Also Published As

Publication number Publication date
AT326897B (en) 1976-01-12
IT944649B (en) 1973-04-20
ATA1127271A (en) 1975-03-15
FR2120182A1 (en) 1972-08-11
CH535116A (en) 1973-03-31
DE2100095A1 (en) 1972-07-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees