JPS5577533A - Method of producing resin tube with groove in inner surface thereof - Google Patents

Method of producing resin tube with groove in inner surface thereof

Info

Publication number
JPS5577533A
JPS5577533A JP15077578A JP15077578A JPS5577533A JP S5577533 A JPS5577533 A JP S5577533A JP 15077578 A JP15077578 A JP 15077578A JP 15077578 A JP15077578 A JP 15077578A JP S5577533 A JPS5577533 A JP S5577533A
Authority
JP
Japan
Prior art keywords
die
tube
end surface
projections
grooves
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
JP15077578A
Other languages
Japanese (ja)
Inventor
Takaaki Yamaguchi
Teruchika Nishishima
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 Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
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 Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP15077578A priority Critical patent/JPS5577533A/en
Publication of JPS5577533A publication Critical patent/JPS5577533A/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
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • 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
    • B29L2023/003—Tubular articles having irregular or rough surfaces

Abstract

PURPOSE:To obtain an extrusion-molded tube with grooves or projections in or on the inner surface thereof by using an inner die which is projected outwardly from an annular mouthpiece of an extruder beyond an end surface of an outer die, and which is provided with projections or grooves on or in the outer circumferential surface of that portion of thereof which is between the outer end of the inner die and that portion of the outer die which is inner than the end surface thereof. CONSTITUTION:An inner die 2 extended from an annular mouthpiece of an extruder has a projected portion 21 extended outwardly beyond an end surface of an outer die 1. Four projections 3 are provided on the outer circumferential surface of that portion of the inner die which is between the outer end the projected portion 21 and that portion of the outer die which is inner than the end surface thereof. A thermoplastic resin 6 continuously extruded is shaped into a tube having four grooves in the inner surface thereof. This tube is cooled and hardened by a cooling pipe through which a cooling medium flows. The length of the projected portion 21 depends upon the dimensions of the dies; it is usually not less than 5cm and, preferably, not less than 15cm and not more than 30cm. The tube thus obtained is used as a cap seal or the like.
JP15077578A 1978-12-06 1978-12-06 Method of producing resin tube with groove in inner surface thereof Pending JPS5577533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15077578A JPS5577533A (en) 1978-12-06 1978-12-06 Method of producing resin tube with groove in inner surface thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15077578A JPS5577533A (en) 1978-12-06 1978-12-06 Method of producing resin tube with groove in inner surface thereof

Publications (1)

Publication Number Publication Date
JPS5577533A true JPS5577533A (en) 1980-06-11

Family

ID=15504144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15077578A Pending JPS5577533A (en) 1978-12-06 1978-12-06 Method of producing resin tube with groove in inner surface thereof

Country Status (1)

Country Link
JP (1) JPS5577533A (en)

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