JPS55154126A - Forming method and device for inflation film - Google Patents

Forming method and device for inflation film

Info

Publication number
JPS55154126A
JPS55154126A JP6224179A JP6224179A JPS55154126A JP S55154126 A JPS55154126 A JP S55154126A JP 6224179 A JP6224179 A JP 6224179A JP 6224179 A JP6224179 A JP 6224179A JP S55154126 A JPS55154126 A JP S55154126A
Authority
JP
Japan
Prior art keywords
film
diameter
inflated
slenderized
extruded
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
JP6224179A
Other languages
Japanese (ja)
Inventor
Toshio Taka
Sumio Goto
Hideaki Toda
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Priority to JP6224179A priority Critical patent/JPS55154126A/en
Publication of JPS55154126A publication Critical patent/JPS55154126A/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
    • B29C48/25—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
    • 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
    • B29C48/911—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
    • B29C48/001—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 enable high-speed forming of a film of high quality by a method wherein the film diameter of a melted film extruded from a round die is inflated up to a specified value under a cooling wind, then slenderized, and again inflated, thereby bubbles of the melted film is stabilized. CONSTITUTION:A melted film 2 extruded from a round die 1 in diameter of A is inflated along the 1st bubble stabilizing body 4 with the diamter B 1.2-2.5 times (preferably 1.4-2.0 times) larger than the diameter A under a cooling wind blown from an airing 3 along the extruding direction, and then is slenderized so that it touches the 2nd bubble stabilizing body 5 with smaller diameter C than the diameter B. After that, it is inflated again up to a desired blowup ratio and, after a frost line 6 being generated, is cured, thereby an inflation film being obtained.
JP6224179A 1979-05-22 1979-05-22 Forming method and device for inflation film Pending JPS55154126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6224179A JPS55154126A (en) 1979-05-22 1979-05-22 Forming method and device for inflation film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6224179A JPS55154126A (en) 1979-05-22 1979-05-22 Forming method and device for inflation film

Publications (1)

Publication Number Publication Date
JPS55154126A true JPS55154126A (en) 1980-12-01

Family

ID=13194444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6224179A Pending JPS55154126A (en) 1979-05-22 1979-05-22 Forming method and device for inflation film

Country Status (1)

Country Link
JP (1) JPS55154126A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101018A (en) * 1981-12-10 1983-06-16 Showa Denko Kk High-density polyethylene inflation film and method of molding the same
JPS59136224A (en) * 1983-01-25 1984-08-04 Sumitomo Chem Co Ltd Ultra-high impact resistant film and preparation thereof
JPS61195823A (en) * 1985-02-26 1986-08-30 Asahi Chem Ind Co Ltd Manufacture of tubular film and its device
US4626397A (en) * 1984-10-29 1986-12-02 Union Camp Corporation Method for controlled orientation of extruded resins

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322095A (en) * 1976-08-11 1978-03-01 Koyo Kougiyou Kk Palnts for fish culture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322095A (en) * 1976-08-11 1978-03-01 Koyo Kougiyou Kk Palnts for fish culture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101018A (en) * 1981-12-10 1983-06-16 Showa Denko Kk High-density polyethylene inflation film and method of molding the same
JPS59136224A (en) * 1983-01-25 1984-08-04 Sumitomo Chem Co Ltd Ultra-high impact resistant film and preparation thereof
US4626397A (en) * 1984-10-29 1986-12-02 Union Camp Corporation Method for controlled orientation of extruded resins
JPS61195823A (en) * 1985-02-26 1986-08-30 Asahi Chem Ind Co Ltd Manufacture of tubular film and its device

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