FR2019129A1 - Simultaneous biaxial orienting of extruded polypropylene- - lay-flat tubes - Google Patents

Simultaneous biaxial orienting of extruded polypropylene- - lay-flat tubes

Info

Publication number
FR2019129A1
FR2019129A1 FR6932980A FR6932980A FR2019129A1 FR 2019129 A1 FR2019129 A1 FR 2019129A1 FR 6932980 A FR6932980 A FR 6932980A FR 6932980 A FR6932980 A FR 6932980A FR 2019129 A1 FR2019129 A1 FR 2019129A1
Authority
FR
France
Prior art keywords
tube
cooling
biaxial orienting
lay
flat tubes
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.)
Pending
Application number
FR6932980A
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.)
Kohjin Holdings Co Ltd
Kohjin Co
Original Assignee
Kohjin Holdings Co Ltd
Kohjin 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 Kohjin Holdings Co Ltd, Kohjin Co filed Critical Kohjin Holdings Co Ltd
Publication of FR2019129A1 publication Critical patent/FR2019129A1/en
Pending 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
    • 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
    • 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

Abstract

Simultaneous biaxial orienting of extruded polypropylene lay-flat tubes. G1-. is effected by rapid cooling of the downwardly extruded tube to prevent excessive crystallisation of the tube and thereby improve the rate of biaxial orienting. Rapid cooling of the tube is effected by controlling the dia. of the tube using on the one hand an inner presser frame formed by a diameter control device provided at its upper end with outlets for the cooling liquid and at its lower end with a cylindrical member whose outer surface is provided with helical grooves for guiding of the inner liquid discharged through the outlets, and on the other hand, an external cooling bath which surrounds the inner presser frame projecting through the base of the cooling bath. Annular space between the bath and the presser frame is closed by an elastomeric ring such that egress of the outer liquid is prevented and the tube is cooled rapidly by direct contacting of the inner and outer walls of the tube with the cooling liquids.
FR6932980A 1968-09-28 1969-09-26 Simultaneous biaxial orienting of extruded polypropylene- - lay-flat tubes Pending FR2019129A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6984668 1968-09-28

Publications (1)

Publication Number Publication Date
FR2019129A1 true FR2019129A1 (en) 1970-06-26

Family

ID=13414564

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6932980A Pending FR2019129A1 (en) 1968-09-28 1969-09-26 Simultaneous biaxial orienting of extruded polypropylene- - lay-flat tubes

Country Status (8)

Country Link
AT (1) AT307715B (en)
BR (1) BR6912771D0 (en)
CA (1) CA933713A (en)
DE (1) DE1948797C3 (en)
ES (1) ES371965A1 (en)
FR (1) FR2019129A1 (en)
NO (1) NO133096C (en)
SE (1) SE366243B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2032346A1 (en) * 1970-06-30 1972-01-05 Windmoeller & Hoelscher Cooling device for tubular plastic films produced by means of a film blow head

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2102315C3 (en) * 1969-08-27 1982-02-11 Exxon Research and Engineering Co., 07036 Linden, N.J. Liquid cooling device for the outside of a tubular film made of thermoplastic material that is cooled inside by means of a cooling mandrel
GB1364236A (en) * 1970-07-21 1974-08-21 Bakelite Xylonite Ltd Extrusion processes
JPS5559930A (en) * 1978-10-31 1980-05-06 Idemitsu Petrochem Co Ltd Resin bubble stabilizing body
AU610366B2 (en) * 1988-03-31 1991-05-16 Idemitsu Petrochemical Co., Ltd. Method of and apparatus for manufacturing biaxially oriented film
US5158637A (en) * 1989-09-20 1992-10-27 Idemitsu Petrochemical Co., Ltd. Method of and an apparatus for thermally processing crystalline thermoplastic resin film
DE19728522C2 (en) * 1997-07-04 2000-12-28 Plamex Maschb Gmbh Method and device for producing single or multi-layer tubular films made of thermoplastic
DE102004040358A1 (en) * 2004-08-20 2006-03-02 Pfaff Gmbh System Innovation Spritzgiesstechnik Method for producing an indwelling catheter and indwelling catheter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2032346A1 (en) * 1970-06-30 1972-01-05 Windmoeller & Hoelscher Cooling device for tubular plastic films produced by means of a film blow head

Also Published As

Publication number Publication date
NO133096C (en) 1976-03-10
AT307715B (en) 1973-06-12
DE1948797C3 (en) 1973-10-11
CA933713A (en) 1973-09-18
BR6912771D0 (en) 1973-04-26
SE366243B (en) 1974-04-22
DE1948797A1 (en) 1970-04-23
ES371965A1 (en) 1973-06-16
DE1948797B2 (en) 1973-03-15
NO133096B (en) 1975-12-01

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