JPS57102322A - Production of multi-layer hollow molded article - Google Patents

Production of multi-layer hollow molded article

Info

Publication number
JPS57102322A
JPS57102322A JP17989780A JP17989780A JPS57102322A JP S57102322 A JPS57102322 A JP S57102322A JP 17989780 A JP17989780 A JP 17989780A JP 17989780 A JP17989780 A JP 17989780A JP S57102322 A JPS57102322 A JP S57102322A
Authority
JP
Japan
Prior art keywords
parison
sheet
parisons
molds
molding
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
JP17989780A
Other languages
Japanese (ja)
Other versions
JPS6151527B2 (en
Inventor
Takuya Suzaki
Yoshiaki Sano
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.)
Nihon Plast Co Ltd
Original Assignee
Nihon Plast 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 Nihon Plast Co Ltd filed Critical Nihon Plast Co Ltd
Priority to JP17989780A priority Critical patent/JPS57102322A/en
Publication of JPS57102322A publication Critical patent/JPS57102322A/en
Publication of JPS6151527B2 publication Critical patent/JPS6151527B2/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent an undersize from occuring due to a dragging-up of the lower end of a sheet parison and bring the sheet parison into contact with cylindrical parison appropriately by clamping the lower end of the sheet parison, when producing a multi-layer hollow molded article by blow molding. CONSTITUTION:Between a pair of molds 4 and 5, parisons are simultaneously extruded from nozzles 9, 10 in parallel to each other, wherein a cylindrical parison 23 is extruded from the nozzle 9 and the sheet parison 24 is extruded in parallel from the nozzle 10. The lower end of the sheet parison 24 is then clamped by a fixed piece 17 and a movable piece 18 of a clamping device 11. Then, the molds 4, 5 are clamped by moving die plates 2, 3 closer to each other, thereby molding the parisons 23, 24. In this case, the sheet parison 24 having its lower end fixed by the clamping device 11 is appropriately brought into contact with the outside surface of the cylindrical parison 23 while being pressed by a guide roller 8 to provide a tension. Air is blown into the inside of the parison 23 through a blow pin 6 to blow up the parison 23 so as to press against the parison 24, and the molding is completed under the condition where the two parisons are pressed against each other by the pair of molds 4, 5.
JP17989780A 1980-12-18 1980-12-18 Production of multi-layer hollow molded article Granted JPS57102322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17989780A JPS57102322A (en) 1980-12-18 1980-12-18 Production of multi-layer hollow molded article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17989780A JPS57102322A (en) 1980-12-18 1980-12-18 Production of multi-layer hollow molded article

Publications (2)

Publication Number Publication Date
JPS57102322A true JPS57102322A (en) 1982-06-25
JPS6151527B2 JPS6151527B2 (en) 1986-11-10

Family

ID=16073808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17989780A Granted JPS57102322A (en) 1980-12-18 1980-12-18 Production of multi-layer hollow molded article

Country Status (1)

Country Link
JP (1) JPS57102322A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314682A1 (en) * 1983-04-22 1984-10-25 Gebr. Happich Gmbh, 5600 Wuppertal PROFILE BAR, IN PARTICULAR FOR VEHICLES, AND METHOD FOR PRODUCING THE SAME AND DEVICE FOR CARRYING OUT THE METHOD
JPS61132324A (en) * 1984-11-30 1986-06-19 Tachikawa Spring Co Ltd Manufacture of seat for motorcycle
JPS62128730A (en) * 1985-11-29 1987-06-11 Mitsubishi Motors Corp Molding of hollow molded product
EP0282847A2 (en) * 1987-03-14 1988-09-21 BASF Aktiengesellschaft Process for making blow-moulded, hollow articles of plastic material
US6045647A (en) * 1995-05-29 2000-04-04 Ube Industries, Ltd. Laminating blow molding method using shifting members

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314682A1 (en) * 1983-04-22 1984-10-25 Gebr. Happich Gmbh, 5600 Wuppertal PROFILE BAR, IN PARTICULAR FOR VEHICLES, AND METHOD FOR PRODUCING THE SAME AND DEVICE FOR CARRYING OUT THE METHOD
JPS61132324A (en) * 1984-11-30 1986-06-19 Tachikawa Spring Co Ltd Manufacture of seat for motorcycle
JPS62128730A (en) * 1985-11-29 1987-06-11 Mitsubishi Motors Corp Molding of hollow molded product
EP0282847A2 (en) * 1987-03-14 1988-09-21 BASF Aktiengesellschaft Process for making blow-moulded, hollow articles of plastic material
US6045647A (en) * 1995-05-29 2000-04-04 Ube Industries, Ltd. Laminating blow molding method using shifting members

Also Published As

Publication number Publication date
JPS6151527B2 (en) 1986-11-10

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