JPS5747634A - Thermoplastic resin parts for precision mechanism - Google Patents

Thermoplastic resin parts for precision mechanism

Info

Publication number
JPS5747634A
JPS5747634A JP55122392A JP12239280A JPS5747634A JP S5747634 A JPS5747634 A JP S5747634A JP 55122392 A JP55122392 A JP 55122392A JP 12239280 A JP12239280 A JP 12239280A JP S5747634 A JPS5747634 A JP S5747634A
Authority
JP
Japan
Prior art keywords
resin
molding
thermoplastic resin
temperature
time
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
JP55122392A
Other languages
Japanese (ja)
Other versions
JPH0115367B2 (en
Inventor
Masaji Ogata
Hideki Asano
Tsuneo Narisawa
Masanori Nemoto
Takeo Ishii
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55122392A priority Critical patent/JPS5747634A/en
Publication of JPS5747634A publication Critical patent/JPS5747634A/en
Publication of JPH0115367B2 publication Critical patent/JPH0115367B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

PURPOSE: To provide the titled parts excellent in dimensional precision and useful for a amount base of a VTR magnetic tape scanner or the like, by molding the part from a themoplastic resin such that the relationship between the glass transition temperature of the resin and the temperature of the molding die at the time of mold release satisfied equation.
CONSTITUTION: The titled parts excellent in dimensional precision is molded from a thermoplastic resin such that the relationship between the glass transition temperature Tg of the resin and the temperature Td of the molding die at the time of mold release satisfies the equation Td-Tg≤20. The thermoplastic resin is preferably one which has a mold shrinkage facter (see JIS-K-6911) adjusted to be not higher than 0.2. Examples of the thermoplastic resin include an unsaturated polyester resin, a diallyl phthalate prepolymer, an epoxy acrylate resin, a mixture of a maleimide compound with a polymerizable nomomer, etc. Preferable molding conditions are the die temperature of about 120W200°C, the molding time of about 1W 10min and the molding pressure of about 50W300kg/cm2.
COPYRIGHT: (C)1982,JPO&Japio
JP55122392A 1980-09-05 1980-09-05 Thermoplastic resin parts for precision mechanism Granted JPS5747634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55122392A JPS5747634A (en) 1980-09-05 1980-09-05 Thermoplastic resin parts for precision mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55122392A JPS5747634A (en) 1980-09-05 1980-09-05 Thermoplastic resin parts for precision mechanism

Publications (2)

Publication Number Publication Date
JPS5747634A true JPS5747634A (en) 1982-03-18
JPH0115367B2 JPH0115367B2 (en) 1989-03-16

Family

ID=14834654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55122392A Granted JPS5747634A (en) 1980-09-05 1980-09-05 Thermoplastic resin parts for precision mechanism

Country Status (1)

Country Link
JP (1) JPS5747634A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669534A (en) * 1985-07-01 1987-06-02 Sanyo Electric Co., Ltd. Air conditioner
JPH0393821A (en) * 1989-09-07 1991-04-18 Nippon Oil & Fats Co Ltd Unsaturated polyester resin composition
JPH03241560A (en) * 1990-02-19 1991-10-28 Mitsubishi Electric Corp Cylinder fitting device for magnetic recording and reproducing device
US5193355A (en) * 1989-09-26 1993-03-16 Matsushita Electric Industrial Co., Ltd. Integrated type air conditioner
JPH0581745A (en) * 1991-09-24 1993-04-02 Shin Kobe Electric Mach Co Ltd Cylinder base for video tape recorder and manufacturing method thereof
JP2009132786A (en) * 2007-11-29 2009-06-18 Kyocera Chemical Corp Molding material with high heat conductivity
JP2024127938A (en) * 2020-03-31 2024-09-20 日本ユピカ株式会社 Crystalline radically polymerizable composition for fixing electric/electronic components, vehicle-mounted rotor core, and method for manufacturing rotor core fixed body

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669534A (en) * 1985-07-01 1987-06-02 Sanyo Electric Co., Ltd. Air conditioner
JPH0393821A (en) * 1989-09-07 1991-04-18 Nippon Oil & Fats Co Ltd Unsaturated polyester resin composition
US5193355A (en) * 1989-09-26 1993-03-16 Matsushita Electric Industrial Co., Ltd. Integrated type air conditioner
JPH03241560A (en) * 1990-02-19 1991-10-28 Mitsubishi Electric Corp Cylinder fitting device for magnetic recording and reproducing device
JPH0581745A (en) * 1991-09-24 1993-04-02 Shin Kobe Electric Mach Co Ltd Cylinder base for video tape recorder and manufacturing method thereof
JP2009132786A (en) * 2007-11-29 2009-06-18 Kyocera Chemical Corp Molding material with high heat conductivity
JP2024127938A (en) * 2020-03-31 2024-09-20 日本ユピカ株式会社 Crystalline radically polymerizable composition for fixing electric/electronic components, vehicle-mounted rotor core, and method for manufacturing rotor core fixed body

Also Published As

Publication number Publication date
JPH0115367B2 (en) 1989-03-16

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