JPS56136330A - Production of heat-insulating duct - Google Patents

Production of heat-insulating duct

Info

Publication number
JPS56136330A
JPS56136330A JP3942680A JP3942680A JPS56136330A JP S56136330 A JPS56136330 A JP S56136330A JP 3942680 A JP3942680 A JP 3942680A JP 3942680 A JP3942680 A JP 3942680A JP S56136330 A JPS56136330 A JP S56136330A
Authority
JP
Japan
Prior art keywords
mold
foamable
coated
film
parison
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
JP3942680A
Other languages
Japanese (ja)
Inventor
Hideo Yoshida
Sadao Kobayashi
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.)
Nihon Plast Co Ltd
Original Assignee
Nihon Plast 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 Nihon Plast Co Ltd filed Critical Nihon Plast Co Ltd
Priority to JP3942680A priority Critical patent/JPS56136330A/en
Publication of JPS56136330A publication Critical patent/JPS56136330A/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/24—Lining or labelling
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/24—Lining or labelling
    • B29C2049/2404—Lining or labelling inside the article
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B29K2995/0015—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B29L2023/225—Insulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Duct Arrangements (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To produce a foamed surface layer having a high foaming degree and excellent heat-insulating property by a method wherein a foamable coating material is coated on the inside surface of a hollow mold, and after introducing a parison into the mold and closing the mold, air is blown into the mold while simultaneously transferring a part of the heat contained in a hollow body to the foamable coated film. CONSTITUTION:The foamable liquid coating material of polyurethanebased type or the like is coated on the cavity surface of the hollow metallic mold 1, 1 having a cavity in the shape of a bellowslike duct, the parison is then introduced into the cavity under the condition where the foamable coated film 6 is heated and foamed, the mold is closed and air is blown into the mold through a blowing-in port 4. As a result, the parison 3 is inflated and closely contacted with the coated film 2 to form the hollow body 5, while part of the heat contained in the body 5 is transferred into the film 2 to accelerate the foaming of the film 2. When the internal pressure of the body is reduced, the foamed surface layer 2' in which the size and the number of the foams are increased toward the inside surface of the layer 2' is obtained. USE:Air-conditioning duct for vehicles and the like.
JP3942680A 1980-03-27 1980-03-27 Production of heat-insulating duct Pending JPS56136330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3942680A JPS56136330A (en) 1980-03-27 1980-03-27 Production of heat-insulating duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3942680A JPS56136330A (en) 1980-03-27 1980-03-27 Production of heat-insulating duct

Publications (1)

Publication Number Publication Date
JPS56136330A true JPS56136330A (en) 1981-10-24

Family

ID=12552658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3942680A Pending JPS56136330A (en) 1980-03-27 1980-03-27 Production of heat-insulating duct

Country Status (1)

Country Link
JP (1) JPS56136330A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203023A (en) * 1982-05-24 1983-11-26 Ikeda Bussan Co Ltd Manufacture of internal trim material of vehicle, etc.
US5958315A (en) * 1997-06-10 1999-09-28 Federal-Mogul Systems Protection Group, Inc. Method of forming a foam coated convoluted tubing
CN106766042A (en) * 2016-11-30 2017-05-31 湖州佑华机电设备有限公司 A kind of central air-conditioning pipe insulation construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203023A (en) * 1982-05-24 1983-11-26 Ikeda Bussan Co Ltd Manufacture of internal trim material of vehicle, etc.
US5958315A (en) * 1997-06-10 1999-09-28 Federal-Mogul Systems Protection Group, Inc. Method of forming a foam coated convoluted tubing
CN106766042A (en) * 2016-11-30 2017-05-31 湖州佑华机电设备有限公司 A kind of central air-conditioning pipe insulation construction

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