JPS5574839A - Manufacturing of polyolefine hollow molded item - Google Patents

Manufacturing of polyolefine hollow molded item

Info

Publication number
JPS5574839A
JPS5574839A JP15018878A JP15018878A JPS5574839A JP S5574839 A JPS5574839 A JP S5574839A JP 15018878 A JP15018878 A JP 15018878A JP 15018878 A JP15018878 A JP 15018878A JP S5574839 A JPS5574839 A JP S5574839A
Authority
JP
Japan
Prior art keywords
gas
molded item
parison
forming mold
cavity surface
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
JP15018878A
Other languages
Japanese (ja)
Inventor
Takefumi Uematsu
Norio 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.)
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 JP15018878A priority Critical patent/JPS5574839A/en
Publication of JPS5574839A publication Critical patent/JPS5574839A/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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/08—Surface shaping of articles, e.g. embossing; Apparatus therefor by flame treatment ; using hot gases
    • B29C59/085—Surface shaping of articles, e.g. embossing; Apparatus therefor by flame treatment ; using hot gases of profiled articles, e.g. hollow or tubular articles
    • 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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
    • B29C49/6445—Thermal conditioning of preforms characterised by temperature differential through the preform length
    • 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
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • 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
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0022—Bright, glossy or shiny surface

Abstract

PURPOSE:To provide an accurate production of cavity surface of mirror finished, improve a smoothness and luster of a surface of the molded item by contacting an outer surface of parison with gas flame extending from its radial direction to the inward direction and thereafter feeding it in the forming mold. CONSTITUTION:Parison b injected from an annular discharge port 7 of the die 1 is contacted with gas flame a, a... combustioned with gas blowed from the injection holes 6, 6... of an annular pipe 4 of a gas blowing mechanism 3, then fed into a forming mold 2 to perform a blow molding. Outer surface of the parison b increases its softness by gas flames, a close fithness with the cavity surface mirror fihished is increased to enable an accurate making of the finished cavity surface of the forming mold, resulting in that a luster of the blow molded item is further improved.
JP15018878A 1978-12-04 1978-12-04 Manufacturing of polyolefine hollow molded item Pending JPS5574839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15018878A JPS5574839A (en) 1978-12-04 1978-12-04 Manufacturing of polyolefine hollow molded item

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15018878A JPS5574839A (en) 1978-12-04 1978-12-04 Manufacturing of polyolefine hollow molded item

Publications (1)

Publication Number Publication Date
JPS5574839A true JPS5574839A (en) 1980-06-05

Family

ID=15491430

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15018878A Pending JPS5574839A (en) 1978-12-04 1978-12-04 Manufacturing of polyolefine hollow molded item

Country Status (1)

Country Link
JP (1) JPS5574839A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102325641A (en) * 2009-02-20 2012-01-18 克朗斯股份公司 Preform heater using gas, method, and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102325641A (en) * 2009-02-20 2012-01-18 克朗斯股份公司 Preform heater using gas, method, and apparatus

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