JPS5649221A - Cylindrical film cooling device - Google Patents

Cylindrical film cooling device

Info

Publication number
JPS5649221A
JPS5649221A JP12465779A JP12465779A JPS5649221A JP S5649221 A JPS5649221 A JP S5649221A JP 12465779 A JP12465779 A JP 12465779A JP 12465779 A JP12465779 A JP 12465779A JP S5649221 A JPS5649221 A JP S5649221A
Authority
JP
Japan
Prior art keywords
film
cooling
water
cooling water
pump
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.)
Granted
Application number
JP12465779A
Other languages
Japanese (ja)
Other versions
JPS626489B2 (en
Inventor
Takao Yamada
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.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
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 Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP12465779A priority Critical patent/JPS5649221A/en
Publication of JPS5649221A publication Critical patent/JPS5649221A/en
Publication of JPS626489B2 publication Critical patent/JPS626489B2/ja
Granted 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
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • 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

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

PURPOSE:To enable stabilization of the film diameter and high speed take-up of the film in the manufacturing step by prolonging the distance and time required for the contact of the cylindrical film with cooling water thereby to improve the cooling effect. CONSTITUTION:A film 2 extruded from a mouth piece 1 is expanded in diameter by air blasted from a blasting pipe 3, and cooled with cooling water on the upper step cooling ring 41, and lower cooling ring 42 of a cooling device 4. The cooling water in a pressure reduction chamber 44 is supplied through a water supply pipe 46' and a part of the cooling water is exhausted through an exhaust pipe 47', and the major part thereof is sucked up by means of a pump 6 as shown by arrow A. The larger the pressure reduction water suction function of the pump 6, the better. If the pump 6 has a function more than the difference A between the level of water stored in the inner side reduction chamber and the level of water on the upper ring 41, the film 2 is taken up downward while pressing and sealing cooling water on the outer peripheral surface, and hence variation in the diameter of the film 2 becomes small, and the time required for contacting cooling becomes large, so that the high-speed take-up of the film 2 becomes possible.
JP12465779A 1979-09-27 1979-09-27 Cylindrical film cooling device Granted JPS5649221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12465779A JPS5649221A (en) 1979-09-27 1979-09-27 Cylindrical film cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12465779A JPS5649221A (en) 1979-09-27 1979-09-27 Cylindrical film cooling device

Publications (2)

Publication Number Publication Date
JPS5649221A true JPS5649221A (en) 1981-05-02
JPS626489B2 JPS626489B2 (en) 1987-02-12

Family

ID=14890818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12465779A Granted JPS5649221A (en) 1979-09-27 1979-09-27 Cylindrical film cooling device

Country Status (1)

Country Link
JP (1) JPS5649221A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7140855B2 (en) * 2002-02-01 2006-11-28 Kohjin Co., Ltd. Inner mandrel

Also Published As

Publication number Publication date
JPS626489B2 (en) 1987-02-12

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