JPS57174214A - Method for regulating uniformity in thickness of biaxially stretched tubular film of synthetic resin - Google Patents

Method for regulating uniformity in thickness of biaxially stretched tubular film of synthetic resin

Info

Publication number
JPS57174214A
JPS57174214A JP56061682A JP6168281A JPS57174214A JP S57174214 A JPS57174214 A JP S57174214A JP 56061682 A JP56061682 A JP 56061682A JP 6168281 A JP6168281 A JP 6168281A JP S57174214 A JPS57174214 A JP S57174214A
Authority
JP
Japan
Prior art keywords
film
thickness
reheating
cylinder
synthetic resin
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
JP56061682A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6349612B2 (enrdf_load_stackoverflow
Inventor
Kazuo Kondo
Kakushi Maruyama
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.)
Okura Industrial Co Ltd
Original Assignee
Okura Industrial Co Ltd
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 Okura Industrial Co Ltd filed Critical Okura Industrial Co Ltd
Priority to JP56061682A priority Critical patent/JPS57174214A/ja
Publication of JPS57174214A publication Critical patent/JPS57174214A/ja
Publication of JPS6349612B2 publication Critical patent/JPS6349612B2/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
    • B29C48/03—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
    • B29C48/03—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)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
JP56061682A 1981-04-21 1981-04-21 Method for regulating uniformity in thickness of biaxially stretched tubular film of synthetic resin Granted JPS57174214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56061682A JPS57174214A (en) 1981-04-21 1981-04-21 Method for regulating uniformity in thickness of biaxially stretched tubular film of synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56061682A JPS57174214A (en) 1981-04-21 1981-04-21 Method for regulating uniformity in thickness of biaxially stretched tubular film of synthetic resin

Publications (2)

Publication Number Publication Date
JPS57174214A true JPS57174214A (en) 1982-10-26
JPS6349612B2 JPS6349612B2 (enrdf_load_stackoverflow) 1988-10-05

Family

ID=13178273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56061682A Granted JPS57174214A (en) 1981-04-21 1981-04-21 Method for regulating uniformity in thickness of biaxially stretched tubular film of synthetic resin

Country Status (1)

Country Link
JP (1) JPS57174214A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6349612B2 (enrdf_load_stackoverflow) 1988-10-05

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