JPS5572010A - Preparation of laminated magnetic core - Google Patents

Preparation of laminated magnetic core

Info

Publication number
JPS5572010A
JPS5572010A JP14548578A JP14548578A JPS5572010A JP S5572010 A JPS5572010 A JP S5572010A JP 14548578 A JP14548578 A JP 14548578A JP 14548578 A JP14548578 A JP 14548578A JP S5572010 A JPS5572010 A JP S5572010A
Authority
JP
Japan
Prior art keywords
curing
adhesive
temperature
point range
core sheet
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
JP14548578A
Other languages
Japanese (ja)
Other versions
JPS6126204B2 (en
Inventor
Yasuo Kudo
Koichi Nishida
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14548578A priority Critical patent/JPS5572010A/en
Publication of JPS5572010A publication Critical patent/JPS5572010A/en
Publication of JPS6126204B2 publication Critical patent/JPS6126204B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives

Landscapes

  • Magnetic Heads (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

PURPOSE: To prevent adhesive from flowing out of core sheet separations by employing an epoxy based adhesive compounded to have a melting point range which is about 45W55°C lower than the temperature at which the adhesive being curing.
CONSTITUTION: An adhesive being used consists of stoichiometric mixture of a hardner, dicyandiamide whose curing-start temperature is about 145°C and an epoxy resin having a molting point range of 90W100°C. The formed epoxy resin 1 is coated on the surface of the core sheet 2 and overlain on the resin-free surface of the core sheet 3. The laminated assembly is heated to a temperature of the melting point range and pressed under a pressure of 5W10kg/cm2, then heated to a temperature higher than that at which the resin starts curing, thereby to complete curing. This forms a laminated magnetic core having proper spaces between each of thin plates. In the process, small difference between the melting and curing temperature allows the adhesive to be held without flowing out, thus providing a strong bond strength.
COPYRIGHT: (C)1980,JPO&Japio
JP14548578A 1978-11-25 1978-11-25 Preparation of laminated magnetic core Granted JPS5572010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14548578A JPS5572010A (en) 1978-11-25 1978-11-25 Preparation of laminated magnetic core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14548578A JPS5572010A (en) 1978-11-25 1978-11-25 Preparation of laminated magnetic core

Publications (2)

Publication Number Publication Date
JPS5572010A true JPS5572010A (en) 1980-05-30
JPS6126204B2 JPS6126204B2 (en) 1986-06-19

Family

ID=15386341

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14548578A Granted JPS5572010A (en) 1978-11-25 1978-11-25 Preparation of laminated magnetic core

Country Status (1)

Country Link
JP (1) JPS5572010A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0543404U (en) * 1991-11-07 1993-06-11 株式会社小糸製作所 Vehicle lighting

Also Published As

Publication number Publication date
JPS6126204B2 (en) 1986-06-19

Similar Documents

Publication Publication Date Title
JPS5572010A (en) Preparation of laminated magnetic core
JPS5712082A (en) Foamable adhesive sheet
JPS5278934A (en) Adhesive composition for chemical plating
JPS57187376A (en) Adhesive composition
JPS543135A (en) Adhesive composition
JPS578922A (en) Magnetic sheet with transfer property
JPS5243838A (en) Electro-conductive adhesive
JPS56106983A (en) Bonding method of film
JPS51135999A (en) Epoxy res in composition
JPS55774A (en) Electrically conductive adhesive part and its use
JPS54125236A (en) Production of flexible plate for printed circuit
JPS56127630A (en) Curable resin composition
JPS5359900A (en) Manufacturing method of oil immersed laminated paper
JPS523675A (en) Process for manufacturing synthetic resin-metal composite laminates
JPS5226992A (en) Reinforced corrugated board manufacturing method
JPS5478772A (en) Production of laminate
JPS5731936A (en) Preparation molded product of molding compound for epoxy resin sheet
JPS5521401A (en) Adhesion method
JPS5276346A (en) Epoxy resin adhesive composition
JPS54148866A (en) Manufacture of epoxy resin bonding sheet
JPS56135048A (en) Bonding method of rubber cloth
JPS5774116A (en) Preparation of prepreg
JPS56155724A (en) Successive manufacture of laminate board
JPS57159868A (en) Sheetlike thermosetting adhesive
JPS5614796A (en) Diaphragm for loudspeaker