JPS557451A - Production of polypropylene sheet - Google Patents

Production of polypropylene sheet

Info

Publication number
JPS557451A
JPS557451A JP8056378A JP8056378A JPS557451A JP S557451 A JPS557451 A JP S557451A JP 8056378 A JP8056378 A JP 8056378A JP 8056378 A JP8056378 A JP 8056378A JP S557451 A JPS557451 A JP S557451A
Authority
JP
Japan
Prior art keywords
sheet
roll
temperature
cooling
pressing
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
JP8056378A
Other languages
Japanese (ja)
Other versions
JPS5757254B2 (en
Inventor
Toshio Suzuki
Kyosuke Miki
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.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite 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 Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP8056378A priority Critical patent/JPS557451A/en
Publication of JPS557451A publication Critical patent/JPS557451A/en
Publication of JPS5757254B2 publication Critical patent/JPS5757254B2/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
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/9155—Pressure rollers
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. 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
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling drums
    • 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
    • B29C48/92—Measuring, controlling or regulating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

PURPOSE:To prevent the warp of a crystalline polypropylene resin sheet by cooling the sheet by a slow cooling rotary roll immediately after the sheet is extruded and before the sheet is passed between pressing rolls. CONSTITUTION:After extruded by a T-die 2 fitted on a uniaxial extruder 1, the sheet is slowly cooled by the contact with the surface of a slow cooling rotary roll 3. The sheet is then further cooled by the contact with a emboss finished pressing roll 4, a mirror finished pressing roll 5, and a cooling roll 6. The sheet is then cut up along the extrusion direction to form out-size sheets. In this method, the resin sheet has a temperature of 210 to 270 deg.C immediately on extrusion, is cooled down to a temperature of 150 to 180 deg.C at a cooling rate smaller than 10 deg.C/sec by the roll 3, and is cooled down to a temperature of 100 to 140 deg.C by the pressing rolls 4 and 5.
JP8056378A 1978-07-04 1978-07-04 Production of polypropylene sheet Granted JPS557451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8056378A JPS557451A (en) 1978-07-04 1978-07-04 Production of polypropylene sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8056378A JPS557451A (en) 1978-07-04 1978-07-04 Production of polypropylene sheet

Publications (2)

Publication Number Publication Date
JPS557451A true JPS557451A (en) 1980-01-19
JPS5757254B2 JPS5757254B2 (en) 1982-12-03

Family

ID=13721799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8056378A Granted JPS557451A (en) 1978-07-04 1978-07-04 Production of polypropylene sheet

Country Status (1)

Country Link
JP (1) JPS557451A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5776014A (en) * 1980-09-02 1982-05-12 Bayer Ag Manufacture of ethylene graft copolymer containing anhydrous group or carboxyl group
WO2019225676A1 (en) * 2018-05-23 2019-11-28 株式会社クラレ Extruded resin plate and method for manufacturing same, and laminated plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61181862U (en) * 1985-05-02 1986-11-13

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5776014A (en) * 1980-09-02 1982-05-12 Bayer Ag Manufacture of ethylene graft copolymer containing anhydrous group or carboxyl group
WO2019225676A1 (en) * 2018-05-23 2019-11-28 株式会社クラレ Extruded resin plate and method for manufacturing same, and laminated plate
KR20210011946A (en) * 2018-05-23 2021-02-02 주식회사 쿠라레 Extruded resin plate and its manufacturing method, and laminated plate
JPWO2019225676A1 (en) * 2018-05-23 2021-07-01 株式会社クラレ Extruded resin plate, its manufacturing method, and laminated plate

Also Published As

Publication number Publication date
JPS5757254B2 (en) 1982-12-03

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