JPS6420700A - Manufacture of electromagnetic shielded molding - Google Patents

Manufacture of electromagnetic shielded molding

Info

Publication number
JPS6420700A
JPS6420700A JP17596587A JP17596587A JPS6420700A JP S6420700 A JPS6420700 A JP S6420700A JP 17596587 A JP17596587 A JP 17596587A JP 17596587 A JP17596587 A JP 17596587A JP S6420700 A JPS6420700 A JP S6420700A
Authority
JP
Japan
Prior art keywords
agent
mold
molding
over
monolithically
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
JP17596587A
Other languages
Japanese (ja)
Inventor
Takahiro Ueno
Masayuki Isawa
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric 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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP17596587A priority Critical patent/JPS6420700A/en
Publication of JPS6420700A publication Critical patent/JPS6420700A/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2633/00—Use of polymers of unsaturated acids or derivatives thereof for preformed parts, e.g. for inserts
    • B29K2633/04—Polymers of esters
    • B29K2633/08—Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0011—Electromagnetic wave shielding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

PURPOSE:To reduce the number of processing steps, by filling and hardening a molten resin after applying an agent to give electrical conductivity over the cavity surface of a mold, and forming the agent over the surface of the resin molding monolithically. CONSTITUTION:A parting agent is applied over the surface of a projected part 1a of a male mold 1 and dried by spraying a filler mixture coating material 2, wherein Ni powder and an acrylic resin are mixed at a ratio of 4 to 5. The male mold 1 is fit into a female mold 3, and a molten resin is injected to a thermally fusible cavity A which is to be formed by the fit and form it together with the agent to give electric conductivity 2 monolithically, Then, a molding 5 is taken out by separating the mold. According to the constitution, moldings with high electromagnetic shielding properties can be massproduced, thereby reducing the production cost.
JP17596587A 1987-07-16 1987-07-16 Manufacture of electromagnetic shielded molding Pending JPS6420700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17596587A JPS6420700A (en) 1987-07-16 1987-07-16 Manufacture of electromagnetic shielded molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17596587A JPS6420700A (en) 1987-07-16 1987-07-16 Manufacture of electromagnetic shielded molding

Publications (1)

Publication Number Publication Date
JPS6420700A true JPS6420700A (en) 1989-01-24

Family

ID=16005351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17596587A Pending JPS6420700A (en) 1987-07-16 1987-07-16 Manufacture of electromagnetic shielded molding

Country Status (1)

Country Link
JP (1) JPS6420700A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990016143A1 (en) * 1989-06-12 1990-12-27 Otsuka Kagaku Kabushiki Kaisha Electrostatic shielding film or sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990016143A1 (en) * 1989-06-12 1990-12-27 Otsuka Kagaku Kabushiki Kaisha Electrostatic shielding film or sheet

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