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FR2128340A1 - Drawn thermoplastic film prodn appts - with devices for subjecting extruded tubular film to controlled expansion, flattening - Google Patents

Drawn thermoplastic film prodn appts - with devices for subjecting extruded tubular film to controlled expansion, flattening

Info

Publication number
FR2128340A1
FR2128340A1 FR7205707A FR7205707A FR2128340A1 FR 2128340 A1 FR2128340 A1 FR 2128340A1 FR 7205707 A FR7205707 A FR 7205707A FR 7205707 A FR7205707 A FR 7205707A FR 2128340 A1 FR2128340 A1 FR 2128340A1
Authority
FR
France
Prior art keywords
tube
flattening
film
appts
prodn
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.)
Withdrawn
Application number
FR7205707A
Other languages
French (fr)
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.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
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 Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of FR2128340A1 publication Critical patent/FR2128340A1/en
Withdrawn legal-status Critical Current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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/08—Making preforms having internal stresses, e.g. plastic memory by stretching tubes
    • 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
    • B29C48/88—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
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling drums
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending

Landscapes

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

Abstract

Appts. for prodn. of films with a preferential shrinkage from molten thermoplastic material has a die for extruding a tube of molten thermoplastic material, a pressure pipe for applying an internal pressure to the tube to effect radial expansion, an annular air ring for creating a sheath of air in the for of a sleeve, around the external surface of the tube, after it leaves the die, so as to permit controlled expansion of the dia. of the tube, and to cool the tube, a pair of flattening rollers for receiving and flattening the tube after its passage through the air sheath, and a series of rollers transporting the flattened tube in a longitudinal direction, the velocity of rotation of thes erollers being sufficient to form an elongation zone at an elevated temp. of the film, and a relaxation zone after a decrease in the temp. of the film. Used in packaging.
FR7205707A 1971-03-01 1972-02-21 Drawn thermoplastic film prodn appts - with devices for subjecting extruded tubular film to controlled expansion, flattening Withdrawn FR2128340A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12003571A 1971-03-01 1971-03-01

Publications (1)

Publication Number Publication Date
FR2128340A1 true FR2128340A1 (en) 1972-10-20

Family

ID=22387891

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7205707A Withdrawn FR2128340A1 (en) 1971-03-01 1972-02-21 Drawn thermoplastic film prodn appts - with devices for subjecting extruded tubular film to controlled expansion, flattening

Country Status (6)

Country Link
BE (1) BE779733A (en)
BR (1) BR7201110D0 (en)
DE (1) DE2207712A1 (en)
FR (1) FR2128340A1 (en)
NL (1) NL7202118A (en)
ZA (1) ZA72621B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531021A1 (en) * 1991-09-06 1993-03-10 Illinois Tool Works Inc. Process and method for producing stretch wrap plastic film
WO2000013880A1 (en) * 1998-09-08 2000-03-16 Dsm N.V. Connection with a component produced of a thermoplastic elastomer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623548A1 (en) * 1986-07-12 1988-01-28 Reifenhaeuser Masch DEVICE FOR THE PRODUCTION OF PLASTIC FILMS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531021A1 (en) * 1991-09-06 1993-03-10 Illinois Tool Works Inc. Process and method for producing stretch wrap plastic film
AU643902B2 (en) * 1991-09-06 1993-11-25 Illinois Tool Works Inc. Method for making prestretched film
WO2000013880A1 (en) * 1998-09-08 2000-03-16 Dsm N.V. Connection with a component produced of a thermoplastic elastomer
NL1010022C2 (en) * 1998-09-08 2000-04-03 Dsm Nv Connection to a part made of a thermoplastic elastomer.
US6878225B2 (en) 1998-09-08 2005-04-12 Dsm Ip Assets B.V. Connection with a component produced of a thermoplastic elastomer

Also Published As

Publication number Publication date
DE2207712A1 (en) 1972-09-07
BR7201110D0 (en) 1973-05-31
ZA72621B (en) 1972-10-25
NL7202118A (en) 1972-09-05
BE779733A (en) 1972-06-16

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Legal Events

Date Code Title Description
ST Notification of lapse