IT1260330B - Testa soffiante foglie per la produzione di foglie tubolari in materiale termoplastico. - Google Patents

Testa soffiante foglie per la produzione di foglie tubolari in materiale termoplastico.

Info

Publication number
IT1260330B
IT1260330B ITBZ920049A ITBZ920049A IT1260330B IT 1260330 B IT1260330 B IT 1260330B IT BZ920049 A ITBZ920049 A IT BZ920049A IT BZ920049 A ITBZ920049 A IT BZ920049A IT 1260330 B IT1260330 B IT 1260330B
Authority
IT
Italy
Prior art keywords
external
leaf
heated
production
tube
Prior art date
Application number
ITBZ920049A
Other languages
English (en)
Inventor
Fritz Achelpohl
Original Assignee
Windmoeller & Hoelscher
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
Priority claimed from DE4207439A external-priority patent/DE4207439B4/de
Application filed by Windmoeller & Hoelscher filed Critical Windmoeller & Hoelscher
Publication of ITBZ920049A0 publication Critical patent/ITBZ920049A0/it
Publication of ITBZ920049A1 publication Critical patent/ITBZ920049A1/it
Application granted granted Critical
Publication of IT1260330B publication Critical patent/IT1260330B/it

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
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular 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
    • B29C48/88—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
    • 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
    • B29C2948/92923—Calibration, after-treatment or cooling zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

L'invenzione concerne una testa soffiante foglie per la produzione di foglie tubolari in un materiale termoplastico, con tubazioni per l'adduzione e l'asportazione di aria di raffreddamento interna, con almeno un canale di adduzione sboccante in un ugello di uscita anulare per il materiale plastico fuso, con un anello di raffreddamento (1) esterno circondante il tubo estruso in materiale plastico, e con dispositivi per l'adduzione di aria differentemente riscaldabile su tratti del tubo in foglia estruso, distribuiti lungo il perimetro.L'anello di raffreddamento esterno (1) è suddiviso in settori, nei quali l'aria soffiante sul tubo estruso in foglia è differentemente riscaldabile o raffreddabile. Inoltre nell'anello di raffreddamento (1) esterno, fra la parte esterna dello spazio anulare e la sua parte di uscita interna a forma di ugello, sono disposti corpi conduttori (2) riscaldabili e/o raffreddabili indipendentemente fra loro. Ulteriori ugelli di aria di soffiaggio sono poi disposti nell'anello di raffreddamento (1).
ITBZ920049A 1991-12-12 1992-11-18 Testa soffiante foglie per la produzione di foglie tubolari in materiale termoplastico. IT1260330B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4140990 1991-12-12
DE4207439A DE4207439B4 (de) 1991-12-12 1992-03-09 Folienblaskopf zur Herstellung von Schlauchfolien aus thermoplastischem Kunststoff

Publications (3)

Publication Number Publication Date
ITBZ920049A0 ITBZ920049A0 (it) 1992-11-18
ITBZ920049A1 ITBZ920049A1 (it) 1994-05-18
IT1260330B true IT1260330B (it) 1996-04-05

Family

ID=25910014

Family Applications (1)

Application Number Title Priority Date Filing Date
ITBZ920049A IT1260330B (it) 1991-12-12 1992-11-18 Testa soffiante foglie per la produzione di foglie tubolari in materiale termoplastico.

Country Status (3)

Country Link
JP (1) JPH0771817B2 (it)
CA (1) CA2085184C (it)
IT (1) IT1260330B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166819A (zh) * 2011-01-24 2011-08-31 湖北恒泰橡塑有限公司 吹膜机膜厚精密控制装置
CN120620627B (zh) * 2025-08-13 2025-10-31 浙江鹏翔精机制造有限公司 一种吹膜机模头风环机构

Also Published As

Publication number Publication date
CA2085184C (en) 2003-10-21
ITBZ920049A0 (it) 1992-11-18
JPH0771817B2 (ja) 1995-08-02
ITBZ920049A1 (it) 1994-05-18
CA2085184A1 (en) 1993-06-13
JPH05237918A (ja) 1993-09-17

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971127