GB2028217B - Blow head for the manufacture of tubular films by extrusion - Google Patents

Blow head for the manufacture of tubular films by extrusion

Info

Publication number
GB2028217B
GB2028217B GB7927983A GB7927983A GB2028217B GB 2028217 B GB2028217 B GB 2028217B GB 7927983 A GB7927983 A GB 7927983A GB 7927983 A GB7927983 A GB 7927983A GB 2028217 B GB2028217 B GB 2028217B
Authority
GB
United Kingdom
Prior art keywords
extrusion
manufacture
blow head
tubular films
films
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
GB7927983A
Other versions
GB2028217A (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.)
Demag Kunststofftechnik Zweigniederlassung der Demag AG
Original Assignee
Demag Kunststofftechnik Zweigniederlassung der Demag 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 Demag Kunststofftechnik Zweigniederlassung der Demag AG filed Critical Demag Kunststofftechnik Zweigniederlassung der Demag AG
Publication of GB2028217A publication Critical patent/GB2028217A/en
Application granted granted Critical
Publication of GB2028217B publication Critical patent/GB2028217B/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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
GB7927983A 1978-08-23 1979-08-10 Blow head for the manufacture of tubular films by extrusion Expired GB2028217B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782836808 DE2836808A1 (en) 1978-08-23 1978-08-23 BLOW HEAD FOR THE PRODUCTION OF TUBE FILMS IN THE EXTRUSION PROCESS

Publications (2)

Publication Number Publication Date
GB2028217A GB2028217A (en) 1980-03-05
GB2028217B true GB2028217B (en) 1982-09-29

Family

ID=6047710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7927983A Expired GB2028217B (en) 1978-08-23 1979-08-10 Blow head for the manufacture of tubular films by extrusion

Country Status (5)

Country Link
DE (1) DE2836808A1 (en)
FR (1) FR2434028A1 (en)
GB (1) GB2028217B (en)
IT (2) IT1119826B (en)
NL (1) NL7905999A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA817888B (en) * 1980-11-26 1982-10-27 Union Carbide Corp Air ring lip extension for blowing film from olefin resins
US11298865B2 (en) * 2016-01-15 2022-04-12 Addex, Inc. High performance cooling system
CA3079442C (en) * 2018-03-23 2022-08-30 Addex, Inc. Method and apparatus for cooling

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1421490A (en) * 1964-11-02 1965-12-17 Prosyn Advanced equipment for the manufacture of extruded plastic sheaths
FR2370568A1 (en) * 1976-11-10 1978-06-09 Ato Emballage Manifolds to direct coolant air against tubular extruded film surface - with internal and external balance control for rapid throughput

Also Published As

Publication number Publication date
DE2836808A1 (en) 1980-03-06
FR2434028A1 (en) 1980-03-21
IT7936053V0 (en) 1979-08-13
GB2028217A (en) 1980-03-05
FR2434028B1 (en) 1982-05-28
NL7905999A (en) 1980-02-26
IT7950036A0 (en) 1979-08-13
IT1119826B (en) 1986-03-10

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee