JPS5613147A - Mold for extrusion-molding foamable synthetic resin - Google Patents

Mold for extrusion-molding foamable synthetic resin

Info

Publication number
JPS5613147A
JPS5613147A JP8949879A JP8949879A JPS5613147A JP S5613147 A JPS5613147 A JP S5613147A JP 8949879 A JP8949879 A JP 8949879A JP 8949879 A JP8949879 A JP 8949879A JP S5613147 A JPS5613147 A JP S5613147A
Authority
JP
Japan
Prior art keywords
mold
discharge section
extrusion
synthetic resin
cylindrical
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
JP8949879A
Other languages
Japanese (ja)
Inventor
Mitsuharu Okido
Hidenori Idate
Tadashi Sato
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP8949879A priority Critical patent/JPS5613147A/en
Publication of JPS5613147A publication Critical patent/JPS5613147A/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
    • B29C44/36—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
    • 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

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To improve the reliability of the strength of a mold product and to prevent the reduction in a foaming magnification, by a method wherein a cooling hole is perforated in a mold, which is constituted such that an inner mold, an intermediate mold, and an outer mold are placed cocentrically, and a cylindrical molded product extruded through the mold is cooled. CONSTITUTION:An inner mold 1, an intermediate mold 2, and an outer mold 3 are positioned cocentrically through the medium of their respective gaps, and a cooling hole 5 is provided in the inside of the approximately cylindrical inner mold 1. A rough section is provided on an outer circumferential surface of the inner mold 1, and a plurality of core-feeding holes 7 are bored in the intermediate mold 2. An inside discharge section 8 between the inner mold 1 and intermediate mold 2 and an outside discharge section 9 between the intermediate mold 2 and outer mold 3 are connected together through the medium of a flow path 10 formed in the intermediate mold 2. This causes the formation of an extrusion-molding mold 4. Foamable synthetic resin 14 is flowed into a manifold 12 from the direction A, and is formed into a former shape, which is before foaming, in the inside discharge section 8 and the outside discharge section 9. A cylindrical procudt 17 is extruded through the mold 4, and simultaneously, the molded product 17 and a core material 15 are united together.
JP8949879A 1979-07-14 1979-07-14 Mold for extrusion-molding foamable synthetic resin Pending JPS5613147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8949879A JPS5613147A (en) 1979-07-14 1979-07-14 Mold for extrusion-molding foamable synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8949879A JPS5613147A (en) 1979-07-14 1979-07-14 Mold for extrusion-molding foamable synthetic resin

Publications (1)

Publication Number Publication Date
JPS5613147A true JPS5613147A (en) 1981-02-09

Family

ID=13972418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8949879A Pending JPS5613147A (en) 1979-07-14 1979-07-14 Mold for extrusion-molding foamable synthetic resin

Country Status (1)

Country Link
JP (1) JPS5613147A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61114988A (en) * 1984-11-08 1986-06-02 三菱電機株式会社 Switchgear for door of elevator
WO2006121130A1 (en) * 2005-05-12 2006-11-16 The Furukawa Electric Co., Ltd. Composite pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61114988A (en) * 1984-11-08 1986-06-02 三菱電機株式会社 Switchgear for door of elevator
WO2006121130A1 (en) * 2005-05-12 2006-11-16 The Furukawa Electric Co., Ltd. Composite pipe

Similar Documents

Publication Publication Date Title
US3229005A (en) Method and apparatus for forming elongated members
US3924989A (en) Machine for producing moldings from chemical components which react quickly with one another
US4210616A (en) Apparatus for forming plastic
US3923438A (en) Apparatus for making variegated soap base
US3372920A (en) Method for producing thermoplastic sheet material
KR870008687A (en) Ribbed pipe manufacturing method and apparatus
ES382515A1 (en) Synthetic wood and a method for preparation thereof
IE40874L (en) Extruding tubes
GB1478549A (en) Apparatus and method for the internal calibration and/or shaping of hollow sections made from thermoplastic synthetic material
US3189941A (en) Apparatus for continuous extrusion of composite bodies of plastic material
ES2023408B3 (en) EXTRUDER DIE.
US2836853A (en) Mold for the manufacture of artificial thermoplastic bearing cages for antifriction bearings
US3713762A (en) Apparatus for the extrusion molding of foamable plastics
KR830009914A (en) Method and apparatus for manufacturing wheels made of plastics
US2411398A (en) Plastic molding
JPS5613147A (en) Mold for extrusion-molding foamable synthetic resin
IN158454B (en)
CA1141916A (en) Tubular extrusion apparatus and method
US2592658A (en) Extrusion head for molding synthetic resins
GB2140361B (en) Method for the production of a hub for a spoke-wheel
US3475789A (en) Blown film dies
US3331103A (en) Extrusion die for foamable thermoplastic compositions
US3069724A (en) Extrusion die with mandrel
FI68557C (en) FOERFARANDE FOER TILLVERKNING AV IHAOLIGA KROPPAR UTGAOENDE AVTT HALVFABRIKAT AV EN TERMOPLAST
SU143226A1 (en) Method of making thermoplastic pipes