JPS57135135A - Changing method of plastic material to be used in forming machine - Google Patents

Changing method of plastic material to be used in forming machine

Info

Publication number
JPS57135135A
JPS57135135A JP56021678A JP2167881A JPS57135135A JP S57135135 A JPS57135135 A JP S57135135A JP 56021678 A JP56021678 A JP 56021678A JP 2167881 A JP2167881 A JP 2167881A JP S57135135 A JPS57135135 A JP S57135135A
Authority
JP
Japan
Prior art keywords
changed
forming machine
plastic material
changing method
replacement
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
JP56021678A
Other languages
Japanese (ja)
Inventor
Takeshi Moriwaki
Shinji Tokuhara
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.)
Daicel Corp
Original Assignee
Daicel Corp
Daicel Chemical Industries 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 Daicel Corp, Daicel Chemical Industries Ltd filed Critical Daicel Corp
Priority to JP56021678A priority Critical patent/JPS57135135A/en
Publication of JPS57135135A publication Critical patent/JPS57135135A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To prevent the production of inferior goods effectively by following method in which the material to be changed is blended with special epoxy alkane, and it is used for replacement and thereafter the material to be changed is supplied into the forming machine, when plastic material to be formed is changed in a forming machine. CONSTITUTION:The inner part of a forming machine in which the material having been used formerly is retained, is replaced with the mixture of platic material to be changed and 1-5wt% epoxy alkane shown by the formula (R, R' is alkyl with more than C8, H), and thereafter, the plastic to be changed is supplied and forming process is carried out. Consequently, the effect of the material having been used formerly may be prevented. This process can be utilized in replacement-operation between almost all thermoplastic materials.
JP56021678A 1981-02-16 1981-02-16 Changing method of plastic material to be used in forming machine Pending JPS57135135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56021678A JPS57135135A (en) 1981-02-16 1981-02-16 Changing method of plastic material to be used in forming machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56021678A JPS57135135A (en) 1981-02-16 1981-02-16 Changing method of plastic material to be used in forming machine

Publications (1)

Publication Number Publication Date
JPS57135135A true JPS57135135A (en) 1982-08-20

Family

ID=12061714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56021678A Pending JPS57135135A (en) 1981-02-16 1981-02-16 Changing method of plastic material to be used in forming machine

Country Status (1)

Country Link
JP (1) JPS57135135A (en)

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