JPS56161126A - Preparation of synthetic resin foamed body with excellent bending strength - Google Patents

Preparation of synthetic resin foamed body with excellent bending strength

Info

Publication number
JPS56161126A
JPS56161126A JP6496980A JP6496980A JPS56161126A JP S56161126 A JPS56161126 A JP S56161126A JP 6496980 A JP6496980 A JP 6496980A JP 6496980 A JP6496980 A JP 6496980A JP S56161126 A JPS56161126 A JP S56161126A
Authority
JP
Japan
Prior art keywords
synthetic resin
foaming agent
clearance
kneaded
extruding
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
JP6496980A
Other languages
Japanese (ja)
Inventor
Ryoichi Ito
Yoshihiro Tomono
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.)
Mitsubishi Petrochemical Co Ltd
Original Assignee
Mitsubishi Petrochemical 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 Mitsubishi Petrochemical Co Ltd filed Critical Mitsubishi Petrochemical Co Ltd
Priority to JP6496980A priority Critical patent/JPS56161126A/en
Publication of JPS56161126A publication Critical patent/JPS56161126A/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3469—Cell or pore nucleation
    • B29C44/3473—Cell or pore nucleation by shearing forces
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/35—Component parts; Details or accessories
    • B29C44/352—Means for giving the foam different characteristics in different directions
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molding Of Porous Articles (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain molded goods having an orientation property by a method wherein synthetic resin, foaming agent and reinforcing material are kneaded at the softening temperature of the synthetic resin or higher and after they are let to pass through a wide clearance once and to foam, they are let to pass through a clearance having gradually-decreasing sectional areas in the extruding direction. CONSTITUTION:During the rotation of the screw 5 of an extruder body 2, foaming agent, synthetic resin and short fibers like glass fibers etc. are kneaded. The resin which can expand by the operation of the foaming agent and exceeds the softening temperature is sent to a die 3 through a braker plate 7 to form foams in the fluid 8. The foamed synthetic resin fluid reaches the channel part 9 of a modifier 1 under extruding pressure and the clearance of the channel part 9 is decreased gradually in the vertical direction. Accordingly, the foams are defoamed into flat shapes along the extruding direction and the reinforced material is oriented in the parallel direction.
JP6496980A 1980-05-16 1980-05-16 Preparation of synthetic resin foamed body with excellent bending strength Pending JPS56161126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6496980A JPS56161126A (en) 1980-05-16 1980-05-16 Preparation of synthetic resin foamed body with excellent bending strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6496980A JPS56161126A (en) 1980-05-16 1980-05-16 Preparation of synthetic resin foamed body with excellent bending strength

Publications (1)

Publication Number Publication Date
JPS56161126A true JPS56161126A (en) 1981-12-11

Family

ID=13273376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6496980A Pending JPS56161126A (en) 1980-05-16 1980-05-16 Preparation of synthetic resin foamed body with excellent bending strength

Country Status (1)

Country Link
JP (1) JPS56161126A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149195A2 (en) * 1984-01-17 1985-07-24 Gebrüder Kömmerling Kunststoffwerke GmbH Structural foam with an integral skin and method for producing it
JPH03129437U (en) * 1990-04-10 1991-12-26
WO1994011177A1 (en) * 1992-11-13 1994-05-26 Srp Industries Ltd. Process for producing thermoplastic products having oriented components
WO1995005932A1 (en) * 1993-08-23 1995-03-02 Srp Industries Ltd. Process for producing thermoplastic products having oriented components
US5533880A (en) * 1991-03-12 1996-07-09 Takeda Chemical Industries, Ltd. Molding apparatus having a movable die and a counter roll
US5863480A (en) * 1994-08-29 1999-01-26 Srp Industries Ltd. Process for making a filler reinforced thermoplastic composites having biaxially oriented components
JP2009242618A (en) * 2008-03-31 2009-10-22 Sekisui Chem Co Ltd Foamed sheet of rubber-based resin with closed cell and its manufacturing method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149195A2 (en) * 1984-01-17 1985-07-24 Gebrüder Kömmerling Kunststoffwerke GmbH Structural foam with an integral skin and method for producing it
JPH03129437U (en) * 1990-04-10 1991-12-26
US5533880A (en) * 1991-03-12 1996-07-09 Takeda Chemical Industries, Ltd. Molding apparatus having a movable die and a counter roll
WO1994011177A1 (en) * 1992-11-13 1994-05-26 Srp Industries Ltd. Process for producing thermoplastic products having oriented components
WO1995005932A1 (en) * 1993-08-23 1995-03-02 Srp Industries Ltd. Process for producing thermoplastic products having oriented components
US5863480A (en) * 1994-08-29 1999-01-26 Srp Industries Ltd. Process for making a filler reinforced thermoplastic composites having biaxially oriented components
JP2009242618A (en) * 2008-03-31 2009-10-22 Sekisui Chem Co Ltd Foamed sheet of rubber-based resin with closed cell and its manufacturing method

Similar Documents

Publication Publication Date Title
KR100195667B1 (en) Method for producing polypropylene resin article having skin material lined with foamed layer
DE3064131D1 (en) Method of filling cavities of forming devices, with a reactive mixture of at least two liquid reaction components forming a solid plastics material
US4497763A (en) Method for injection moulding coated parts from plastics material
GB1382986A (en) Foamed shaped article
JPS56161126A (en) Preparation of synthetic resin foamed body with excellent bending strength
US3786121A (en) Method for the fabrication of insulated profile members
GB1024331A (en) Composite expanded plastics
US5753155A (en) Gating for production of rigid polyurethane foam
US3897528A (en) Method for the extrusion of thermoplastic foam
EP0227489A3 (en) Production of laminated resin foam
US3880970A (en) Process for producing microcellular shaped pieces of dimensional accuracy, particularly shoe soles
FR2093943A1 (en) Expanded plastic vehicle bodies with fibrous or metallic - reinforcement
GB1356441A (en) Glass fibre-reinforced rigid foam bodies
US4047860A (en) Press mold for producing microcellular shaped pieces of dimensional accuracy, particularly shoe soles
FI82212C (en) ANORDNING OCH FOERFARANDE FOER FRAMSTAELLNING AV EN MULTI-CELL-SKUMPLASTSKIVA AV THERMOPLAST.
KR890700629A (en) Method for manufacturing thermoformable polyurethane foamable resin and article of manufacture thereof
KR920006419A (en) Method and apparatus for preparing thermoplastic crosslinked foam
DE69032095D1 (en) Process for the production of a plastic foam
JPS55156033A (en) Skin attached foamed blow molded article method of fabricating the same
JP2975031B2 (en) Manufacturing method of window glass with frame
JPS55118838A (en) Manufacture of composite layer synthetic resin foam molded article
JPS57197131A (en) Extrusion molding of object having strange pattern
JPS56164828A (en) Method for continuous extrusion of building material made of rigid foamed synthetic resin with flexible belt
JPS56133140A (en) Manufacture of foamed sheet filled and having surface skin
JPS57151424A (en) Receiving panel for window