JPS5675829A - Mandrel for inflation forming of plastic film, operation of mandrel and inflation forming apparatus - Google Patents

Mandrel for inflation forming of plastic film, operation of mandrel and inflation forming apparatus

Info

Publication number
JPS5675829A
JPS5675829A JP15334679A JP15334679A JPS5675829A JP S5675829 A JPS5675829 A JP S5675829A JP 15334679 A JP15334679 A JP 15334679A JP 15334679 A JP15334679 A JP 15334679A JP S5675829 A JPS5675829 A JP S5675829A
Authority
JP
Japan
Prior art keywords
mandrel
proper
bubble
heat pipe
inflation forming
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
JP15334679A
Other languages
Japanese (ja)
Other versions
JPS5720132B2 (en
Inventor
Shoji Fukunaga
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.)
Yazaki Kako Corp
Original Assignee
Yazaki Kako Corp
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 Yazaki Kako Corp filed Critical Yazaki Kako Corp
Priority to JP15334679A priority Critical patent/JPS5675829A/en
Publication of JPS5675829A publication Critical patent/JPS5675829A/en
Publication of JPS5720132B2 publication Critical patent/JPS5720132B2/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
    • B29C48/901—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 of hollow bodies
    • B29C48/902—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 of hollow bodies internally
    • 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
    • B29C48/03—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
    • B29C48/001—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

PURPOSE:To obtain a mandrel which can effectively cool bubble and uniformly cool the bubble through a simple operating process by combining a heat pipe with the mandrel proper. CONSTITUTION:A mandrel 1 consists of the whole or part of the evaporate portion 2a of a heat pipe located within the mandrel 3 proper, and a condensing portion 2c projected from the mandrel 3 proper. In the course of time when a fused resin 14a is formed into a resin film 14d, it is shaped into a long cylindrical bubble 14c. In the 14c in which a certain amount of air is enclosed, the farther the location from the mandrel 3 proper, that it, as it approaches the inside tip of the bubble 14a, the lower the temperature becomes. Therefore, the condensing portion 2c of the heat pipe 2 is located in such an atmosphere that the temperature therein is lower by more than 50-70 deg.C than that of the condensing portion 2a placed in the mandrel 3 proper, thus allowing the heat pipe 2 to cool the mandrel 3 proper effectively according to the difference in temperature.
JP15334679A 1979-11-27 1979-11-27 Mandrel for inflation forming of plastic film, operation of mandrel and inflation forming apparatus Granted JPS5675829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15334679A JPS5675829A (en) 1979-11-27 1979-11-27 Mandrel for inflation forming of plastic film, operation of mandrel and inflation forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15334679A JPS5675829A (en) 1979-11-27 1979-11-27 Mandrel for inflation forming of plastic film, operation of mandrel and inflation forming apparatus

Publications (2)

Publication Number Publication Date
JPS5675829A true JPS5675829A (en) 1981-06-23
JPS5720132B2 JPS5720132B2 (en) 1982-04-27

Family

ID=15560457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15334679A Granted JPS5675829A (en) 1979-11-27 1979-11-27 Mandrel for inflation forming of plastic film, operation of mandrel and inflation forming apparatus

Country Status (1)

Country Link
JP (1) JPS5675829A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168519A (en) * 1982-03-31 1983-10-04 Idemitsu Petrochem Co Ltd Cooler for inflation molding
JPS58168520A (en) * 1982-03-31 1983-10-04 Idemitsu Petrochem Co Ltd Cooler for inflation molding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61252124A (en) * 1985-04-30 1986-11-10 Meiki Co Ltd Heating control of screw heating cylinder in injection molding machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168519A (en) * 1982-03-31 1983-10-04 Idemitsu Petrochem Co Ltd Cooler for inflation molding
JPS58168520A (en) * 1982-03-31 1983-10-04 Idemitsu Petrochem Co Ltd Cooler for inflation molding
JPH0249215B2 (en) * 1982-03-31 1990-10-29 Idemitsu Petrochemical Co
JPH0249216B2 (en) * 1982-03-31 1990-10-29 Idemitsu Petrochemical Co

Also Published As

Publication number Publication date
JPS5720132B2 (en) 1982-04-27

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