JPS55166225A - Preparation of inflation film - Google Patents

Preparation of inflation film

Info

Publication number
JPS55166225A
JPS55166225A JP7479479A JP7479479A JPS55166225A JP S55166225 A JPS55166225 A JP S55166225A JP 7479479 A JP7479479 A JP 7479479A JP 7479479 A JP7479479 A JP 7479479A JP S55166225 A JPS55166225 A JP S55166225A
Authority
JP
Japan
Prior art keywords
baloon
folding plates
cooling
folding
ring
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
JP7479479A
Other languages
Japanese (ja)
Inventor
Masanori Hata
Yoshihiro Ozawa
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 JP7479479A priority Critical patent/JPS55166225A/en
Publication of JPS55166225A publication Critical patent/JPS55166225A/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
    • B29C48/911—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
    • 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

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 increase a haul-off speed by stabilizing a film and reducing a frictional resistance by a method wherein the second cooling ring is provided under a folding device and cooling wind is blown into a specified direction to blow air in-between a folding plate and the film. CONSTITUTION:A tubular film extruded upwardly from an annular head 2 is cooled by the first cooling ring 4 and expanded in a diameter thereof to make it into a baloon 3. The baloon 3 is cooled and stabilized by cooling wind blown from the second cooling ring 6 provided a little bit below folding plates 5 into a proceeding direction of the baloon 3 obliquely and upwardly. Simultaneously, a frictional resistance between the folding plates 5 and the baloon 3 is reduced by air blown into a space therebetween and the baloon 3 is folded along with the folding plates 5, thereafter, is hauled off through a nipple roller 7. For further details, a blowing angle of the cooling wind from the second ring 6 is preferably 30-90 deg. and an opening angle alpha of the folding plates 5, 5 is preferably 20-40 deg. respectively.
JP7479479A 1979-06-14 1979-06-14 Preparation of inflation film Pending JPS55166225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7479479A JPS55166225A (en) 1979-06-14 1979-06-14 Preparation of inflation film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7479479A JPS55166225A (en) 1979-06-14 1979-06-14 Preparation of inflation film

Publications (1)

Publication Number Publication Date
JPS55166225A true JPS55166225A (en) 1980-12-25

Family

ID=13557555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7479479A Pending JPS55166225A (en) 1979-06-14 1979-06-14 Preparation of inflation film

Country Status (1)

Country Link
JP (1) JPS55166225A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447387A (en) * 1982-09-30 1984-05-08 Union Carbide Corporation Process for manufacture of tubular film
EP0950499A1 (en) * 1998-04-16 1999-10-20 lean tec Entwicklungs GmbH Method for manufacturing clean blown or cast film and apparatus therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447387A (en) * 1982-09-30 1984-05-08 Union Carbide Corporation Process for manufacture of tubular film
EP0950499A1 (en) * 1998-04-16 1999-10-20 lean tec Entwicklungs GmbH Method for manufacturing clean blown or cast film and apparatus therefor

Similar Documents

Publication Publication Date Title
US4472343A (en) Tubular film process
GB1330168A (en) Air-cooling apparatus for tubular plastics film blown by a blowhead
CN85107514A (en) Spray nozzle type extrudes the cooler of tubular plastic film
GB1383001A (en) Method and apparatus of making oriented tubular film
GB1434182A (en) Preparation of biaxially oriented polyvinyl alcohol film
SU1500148A3 (en) Bag film cooling arrangement
GB1560030A (en) Air ring for the production of blown extruded film
CA2021428A1 (en) Pull off device for flattened tubes of plastic
EP0285368A2 (en) Bubble forming and stabilising device for use in a continuous extrusion process for making a blown film
US4732727A (en) Method and apparatus for producing mesh film
JPS55166225A (en) Preparation of inflation film
ATE121671T1 (en) DEVICE FOR PRODUCING TUBULAR FILMS.
JPS53146764A (en) Film forming by inflation
CA2100431A1 (en) Method and Apparatus for Molding Inflation Film
JPS5586718A (en) Manufacturing device for tubular biaxial stretching film
US5318427A (en) Apparatus for controlling the flow of air for external cooling of an extruder tubular film
JP3521926B2 (en) Blown film forming equipment
GB1502982A (en) Blow moulding apparatus
DE3268335D1 (en) Apparatus for cooling a plastic tubular film, and method
GB858616A (en) Production of seamless thermoplastic tubing
JP2565168Y2 (en) Air cooling device in blown film forming equipment
JPS58188626A (en) Forming of inflatable film
GB1075988A (en) Improvements relating to the production of film
JPH0517228Y2 (en)
JPH0513550Y2 (en)