JPS5595539A - Manufacture of heat-insulating pipe cover with outer skin - Google Patents

Manufacture of heat-insulating pipe cover with outer skin

Info

Publication number
JPS5595539A
JPS5595539A JP273879A JP273879A JPS5595539A JP S5595539 A JPS5595539 A JP S5595539A JP 273879 A JP273879 A JP 273879A JP 273879 A JP273879 A JP 273879A JP S5595539 A JPS5595539 A JP S5595539A
Authority
JP
Japan
Prior art keywords
forming
outer skin
metal mold
foamed body
tubular foamed
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
JP273879A
Other languages
Japanese (ja)
Inventor
Homare Hioki
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.)
Inoac Corp
Inoue Rubber Co Ltd
Original Assignee
Inoue MTP KK
Inoue Rubber 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 Inoue MTP KK, Inoue Rubber Co Ltd filed Critical Inoue MTP KK
Priority to JP273879A priority Critical patent/JPS5595539A/en
Publication of JPS5595539A publication Critical patent/JPS5595539A/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
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems

Abstract

PURPOSE:To conspicuously enhance the efficiency of fabrication process for the captioned pipe cover by forming outer skin and tubular foamed body layer in monoblock or forming them concurrently. CONSTITUTION:Resin 11a containing foaming agent is plasticized and melted through metal mold 25 of extrusion forming machine and at the same time, tubular foamed body 11 is caused to develop foam in a set form. When forming is carried out, it is desirable to preserve the internal diameter by blowing air in through torpedo 26 inside metal mold 25. Simultaneous with the forming of tubular foamed body 11, resin 12a constituting outer skin, while being plasticized and melted, is extruded onto the external surface of tubular foamed body 11 for coating through the other extrusion metal mold 27 connected in the neighborhood of metal mold 25's head, thus forming outer skin 12.
JP273879A 1979-01-12 1979-01-12 Manufacture of heat-insulating pipe cover with outer skin Pending JPS5595539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP273879A JPS5595539A (en) 1979-01-12 1979-01-12 Manufacture of heat-insulating pipe cover with outer skin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP273879A JPS5595539A (en) 1979-01-12 1979-01-12 Manufacture of heat-insulating pipe cover with outer skin

Publications (1)

Publication Number Publication Date
JPS5595539A true JPS5595539A (en) 1980-07-19

Family

ID=11537672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP273879A Pending JPS5595539A (en) 1979-01-12 1979-01-12 Manufacture of heat-insulating pipe cover with outer skin

Country Status (1)

Country Link
JP (1) JPS5595539A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57190993U (en) * 1981-05-29 1982-12-03
JPS6440315A (en) * 1987-08-05 1989-02-10 Inoue Mtp Kk Manufacture of heat insulated pipe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5227473A (en) * 1976-08-30 1977-03-01 Sumitomo Electric Industries Process for manufacturing double foamed tube
JPS5446270A (en) * 1977-09-20 1979-04-12 Inoue Gomu Kogyo Kk Method of making pipe cover for heat insulation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5227473A (en) * 1976-08-30 1977-03-01 Sumitomo Electric Industries Process for manufacturing double foamed tube
JPS5446270A (en) * 1977-09-20 1979-04-12 Inoue Gomu Kogyo Kk Method of making pipe cover for heat insulation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57190993U (en) * 1981-05-29 1982-12-03
JPS6128558Y2 (en) * 1981-05-29 1986-08-23
JPS6440315A (en) * 1987-08-05 1989-02-10 Inoue Mtp Kk Manufacture of heat insulated pipe

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