JPS648010A - Coloring method for reaction injection molding machine - Google Patents

Coloring method for reaction injection molding machine

Info

Publication number
JPS648010A
JPS648010A JP62164170A JP16417087A JPS648010A JP S648010 A JPS648010 A JP S648010A JP 62164170 A JP62164170 A JP 62164170A JP 16417087 A JP16417087 A JP 16417087A JP S648010 A JPS648010 A JP S648010A
Authority
JP
Japan
Prior art keywords
pigment
injection
mold
injected
raw material
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
JP62164170A
Other languages
Japanese (ja)
Other versions
JPH0511730B2 (en
Inventor
Toshio Kubota
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.)
Kanto Jidosha Kogyo KK
Toyota Motor East Japan Inc
Original Assignee
Kanto Jidosha Kogyo KK
Kanto Auto Works 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 Kanto Jidosha Kogyo KK, Kanto Auto Works Ltd filed Critical Kanto Jidosha Kogyo KK
Priority to JP62164170A priority Critical patent/JPS648010A/en
Publication of JPS648010A publication Critical patent/JPS648010A/en
Publication of JPH0511730B2 publication Critical patent/JPH0511730B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
    • B29K2105/0032—Pigments, colouring agents or opacifiyng agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To secure molding quality in reaction injection molding and coloring in an inexpensive process by injecting a liquid-like pigment from the side into a runner section running from an injection head to a mold in the case of injection molding, extruding the same to a mold surface and starting the injection of raw material just after said first injection. CONSTITUTION:For instance, a pigment for a pigment tank 10b is selected by the setting operation of a control device 14, and the pigment compressively transferred by a pump 11b is injected in a very short period of time into a runner section 6a through a pipe 13 by the quantity required for the surface coloring regulated by a metering silicon 12b, immediately after which the fixed quantity of the raw material for tanks 1, 1a is injected from an injection head 4 into the runner section 6a by carrying out the primary action of the control device and extruded into a mold 6. By said process, injection of the pigment is carried out first, and an initial portion (1)of the raw material is followed from behind. Said portion is mixed with the pigment in the extrusion process and covers the inner face of the mold 6, and also the following material portions (2), (3) and (4) in the following positions are injected. Reaction curing including the pigment of rough solubility characteristics from the tank 10b, therefore, is carried out in the mold 6 and a molded product colored on its surface only is manufactured.
JP62164170A 1987-07-01 1987-07-01 Coloring method for reaction injection molding machine Granted JPS648010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62164170A JPS648010A (en) 1987-07-01 1987-07-01 Coloring method for reaction injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62164170A JPS648010A (en) 1987-07-01 1987-07-01 Coloring method for reaction injection molding machine

Publications (2)

Publication Number Publication Date
JPS648010A true JPS648010A (en) 1989-01-12
JPH0511730B2 JPH0511730B2 (en) 1993-02-16

Family

ID=15788058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62164170A Granted JPS648010A (en) 1987-07-01 1987-07-01 Coloring method for reaction injection molding machine

Country Status (1)

Country Link
JP (1) JPS648010A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771642A1 (en) * 1995-11-06 1997-05-07 Metton America, Inc. Method of injection molding articles with selective concentrations or gradients of materials and novel articles containing the same
EP1190840A1 (en) * 1995-12-28 2002-03-27 Toyoda Gosei Co., Ltd. Reactive injection molding process for manufacturing a two-colored molded product of polyurethanes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771642A1 (en) * 1995-11-06 1997-05-07 Metton America, Inc. Method of injection molding articles with selective concentrations or gradients of materials and novel articles containing the same
EP1190840A1 (en) * 1995-12-28 2002-03-27 Toyoda Gosei Co., Ltd. Reactive injection molding process for manufacturing a two-colored molded product of polyurethanes

Also Published As

Publication number Publication date
JPH0511730B2 (en) 1993-02-16

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