JPS5763234A - Rim molded substance and molding thereof - Google Patents

Rim molded substance and molding thereof

Info

Publication number
JPS5763234A
JPS5763234A JP13679280A JP13679280A JPS5763234A JP S5763234 A JPS5763234 A JP S5763234A JP 13679280 A JP13679280 A JP 13679280A JP 13679280 A JP13679280 A JP 13679280A JP S5763234 A JPS5763234 A JP S5763234A
Authority
JP
Japan
Prior art keywords
metal powder
mold
magnetic substances
magnetic
skin layer
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
JP13679280A
Other languages
Japanese (ja)
Inventor
Shozo Nakamura
Kenichi Waratani
Masao Goto
Ataru Yokono
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 JP13679280A priority Critical patent/JPS5763234A/en
Publication of JPS5763234A publication Critical patent/JPS5763234A/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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B29C70/64—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a RIM molded substance with reformed properties such as flexural strength, stiffness and heat resistance by mixing magnetic metal powder with a skin layer at the time of RIM molding for strengthening the skin layer. CONSTITUTION:After measuring polyol (an undiluted solution A) and isocyanate (an undiluted solution B) at 1:1 both undiluted solutions are fed nto a mixing head 12 through, for instance, a hose 13 and here said solutions are implinged and mixed at high speed to be injected into a mold. Prior to said injection, in the opened state of the mold the magnetic metal powder 19 such as silane-treated iron powder etc. is uniformly spread on the surface f the cavity of the upper mold 2, 2A and the lower mold 3, 3A built-in with magnetic substances 18 of form a layer of metal powder of about 0.3mm. of the magnetic substances. Metal powder 19 of the magnetic substances remains closely adhered to the surface of the cavity 6 owing to magnetism of the magnetic substances 18 so as to be solidified after holding about 3-4 minutes after injection of the undiluted solution to obtain a RIM molded substance 15A having a strong skin layer 16A.
JP13679280A 1980-10-02 1980-10-02 Rim molded substance and molding thereof Pending JPS5763234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13679280A JPS5763234A (en) 1980-10-02 1980-10-02 Rim molded substance and molding thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13679280A JPS5763234A (en) 1980-10-02 1980-10-02 Rim molded substance and molding thereof

Publications (1)

Publication Number Publication Date
JPS5763234A true JPS5763234A (en) 1982-04-16

Family

ID=15183617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13679280A Pending JPS5763234A (en) 1980-10-02 1980-10-02 Rim molded substance and molding thereof

Country Status (1)

Country Link
JP (1) JPS5763234A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6384217U (en) * 1986-11-19 1988-06-02
EP0739706A2 (en) * 1995-04-27 1996-10-30 G.M.P. Poliuretani S.r.l. Method and apparatus for manufacturing polymeric products having a differentiated conductivity
EP4230378A1 (en) * 2022-02-18 2023-08-23 Kohler Co. Molded solid surfaces including ferrous material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6384217U (en) * 1986-11-19 1988-06-02
JPH0315058Y2 (en) * 1986-11-19 1991-04-03
EP0739706A2 (en) * 1995-04-27 1996-10-30 G.M.P. Poliuretani S.r.l. Method and apparatus for manufacturing polymeric products having a differentiated conductivity
EP0739706A3 (en) * 1995-04-27 1997-01-02 G M P Poliuretani S R L Method and apparatus for manufacturing polymeric products having a differentiated conductivity
EP4230378A1 (en) * 2022-02-18 2023-08-23 Kohler Co. Molded solid surfaces including ferrous material

Similar Documents

Publication Publication Date Title
JPS53102960A (en) Injection mold
ES8101982A1 (en) Composite molding apparatus for articles from two materials having a rotary mold block which includes pins for providing core areas
JPS5630841A (en) Plastic molding method and metallic mold therefor
JPS5729418A (en) Molded resin item covered with cloth and method of molding the same
CA2095331A1 (en) Method for the use of gas assistance in the molding of plastic articles to enhance surface quality
ES8101948A1 (en) Casting methods with composite molded core assembly
EP0365684A4 (en) Molding method and molding apparatus by use of injection-compression molding machine
KR900007567A (en) Method and apparatus for injecting inert gas into molten resin in the cavity of injection molding equipment
GB2144074A (en) Method of manufacturing a hollow plastics article
JPS5763234A (en) Rim molded substance and molding thereof
JPS5555842A (en) Metallic plate insert molding and products obtained therethrough
JPS57156234A (en) Preparing molded object
JPS55124631A (en) Manufacturing method of annular magnet
JPS54111557A (en) Hollow molded article having integrated internal ribs, and method for forming the same
JPS55121044A (en) Transfer molding equipment capable of continuous molding
JPS5530981A (en) Method of bonding rubber of synthetic resin
JPS57105334A (en) Rim molded article and method for producing the same
JPS5487760A (en) Method of injection molding of synthetic resin
JPS55115316A (en) Manufacturing method of anisotropic cylindrical polymeric magnet
JPS55100140A (en) Molding method and molding
JPS56135009A (en) Manufacture of fancy goods of synthetic resin
JPS5557441A (en) Composite synthetic resin molding
JPS5715915A (en) Molding method for resin
JPS5621817A (en) Molding method for patterning
DE3771467D1 (en) METHOD AND DEVICE FOR PRODUCING AN OBJECT BY INJECTION MOLDING INTO A MOLD WITH TREATMENT OF THE INJECTED MATERIAL.