JPS5791240A - Simultaneous extrusion molding method of solid foam - Google Patents

Simultaneous extrusion molding method of solid foam

Info

Publication number
JPS5791240A
JPS5791240A JP55168188A JP16818880A JPS5791240A JP S5791240 A JPS5791240 A JP S5791240A JP 55168188 A JP55168188 A JP 55168188A JP 16818880 A JP16818880 A JP 16818880A JP S5791240 A JPS5791240 A JP S5791240A
Authority
JP
Japan
Prior art keywords
shell
synthetic resin
injected
injecting
inner part
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
JP55168188A
Other languages
Japanese (ja)
Inventor
Osamu Tanaka
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.)
NANBU KOGYO KK
Original Assignee
NANBU KOGYO KK
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 NANBU KOGYO KK filed Critical NANBU KOGYO KK
Priority to JP55168188A priority Critical patent/JPS5791240A/en
Publication of JPS5791240A publication Critical patent/JPS5791240A/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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29C44/507—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 an annular die

Abstract

PURPOSE:To mold a foamed solid body having a desired filling density, an excellent strength and an excellent heat insulating property by a method wherein at the same time that an outside body making up a shell is molded by an extruder, a core body made up of foaming synthetic resin is injected and filled in the inner part. CONSTITUTION:Synthetic resin like PVC etc. sent from a material inlet part 2 equipped in a die 1 is injected from an injecting part 3 into a molding part 4 to provide an outside part 5 as a shell. On one hand, foaming synthetic resin is injected into the inner part of the shell body 5 from the injecting part 7 provided with many fine holes 6 at equal intervals in the forward direction of the injecting part 3 and on the inside of the shell, the foaming synthetic resin is expanded to provide the solid foam 9, cool and harden the shell 5. In this manner, by regulating the pressure given to the substance to be packed in the inner part of the shell, filling density can be changed freely, mold cavities hardly appear and strength can be adjusted.
JP55168188A 1980-11-29 1980-11-29 Simultaneous extrusion molding method of solid foam Pending JPS5791240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55168188A JPS5791240A (en) 1980-11-29 1980-11-29 Simultaneous extrusion molding method of solid foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55168188A JPS5791240A (en) 1980-11-29 1980-11-29 Simultaneous extrusion molding method of solid foam

Publications (1)

Publication Number Publication Date
JPS5791240A true JPS5791240A (en) 1982-06-07

Family

ID=15863407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55168188A Pending JPS5791240A (en) 1980-11-29 1980-11-29 Simultaneous extrusion molding method of solid foam

Country Status (1)

Country Link
JP (1) JPS5791240A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6183673B1 (en) * 1998-04-24 2001-02-06 Industrial Thermo Ploymers Limited Method for forming extruded foam with surface coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6183673B1 (en) * 1998-04-24 2001-02-06 Industrial Thermo Ploymers Limited Method for forming extruded foam with surface coating

Similar Documents

Publication Publication Date Title
FR2256021A1 (en) Moulded hollow (foamed) plastic articles - by injecting molten resin into moulding cavity, and introducing filling of fluid medium
CA2174996A1 (en) Process for Manufacturing Foam-Filled Extruded Products
KR880012338A (en) Manufacturing method of synthetic resin molding with reinforcement wall structure
DE3260413D1 (en) Stabilized core injection molding of plastic
GB1104659A (en) Manufacture of cellular reinforced articles
US3211605A (en) Foamed product and process
US4435523A (en) Process for manufacturing articles of foamed thermoplastic material and article produced thereby
FI69782C (en) FOER REFRIGERATION FOR EXPLORATION OF EXPOSURE PLASTICS
GB1109748A (en) Process for the production of moulded shaped structures having foamed cores
JPS5546938A (en) System for simultaneously making mould of different kind of material
FR1602792A (en) Combined extrusion and injection moulding equipment for
JPS5791240A (en) Simultaneous extrusion molding method of solid foam
JPS59138421A (en) Manufacture of synthetic resin float having connecting arm integrally
JPS562140A (en) Foaming molding method
JPS54111557A (en) Hollow molded article having integrated internal ribs, and method for forming the same
JPS57150554A (en) Injection molding with screw and its manufacture
GB1180833A (en) A Method for Producing a Moulded Article, in Particular a Shoe Sole.
GB2006668A (en) A process for manufacturing resinous articles having a foamed core
JPS57201633A (en) Foamed molding method
DE59503043D1 (en) Process for producing a molded body from at least two plastic foams of different densities and mold for carrying it out
JPS56164828A (en) Method for continuous extrusion of building material made of rigid foamed synthetic resin with flexible belt
JPS5555837A (en) Manufacture of shock absorbing material for packaging
JPS5490268A (en) Production of synthetic resin foam
JPS57170727A (en) Manufacture of foam molded part
JPS57197131A (en) Extrusion molding of object having strange pattern