JPS57191024A - Method and apparatus for molding thermoplastic resin pipe by extrusion - Google Patents

Method and apparatus for molding thermoplastic resin pipe by extrusion

Info

Publication number
JPS57191024A
JPS57191024A JP56077316A JP7731681A JPS57191024A JP S57191024 A JPS57191024 A JP S57191024A JP 56077316 A JP56077316 A JP 56077316A JP 7731681 A JP7731681 A JP 7731681A JP S57191024 A JPS57191024 A JP S57191024A
Authority
JP
Japan
Prior art keywords
resin
die
pipy
extruded
thermoplastic resin
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
JP56077316A
Other languages
Japanese (ja)
Inventor
Eiji Seki
Kazuyoshi Iizuka
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.)
CHITOSE GOMME KOGYO KK
CHITOSE GOMU KOGYO KK
Original Assignee
CHITOSE GOMME KOGYO KK
CHITOSE GOMU KOGYO KK
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 CHITOSE GOMME KOGYO KK, CHITOSE GOMU KOGYO KK filed Critical CHITOSE GOMME KOGYO KK
Priority to JP56077316A priority Critical patent/JPS57191024A/en
Publication of JPS57191024A publication Critical patent/JPS57191024A/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
    • B29C48/25—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
    • 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
    • B29C48/03—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
    • 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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE:To obtain an inexpensive pipe whose periphery is provided with an uneven surface by a method in which a thermoplastic resin pipe is molded while offering a resistance to the pipy resin immediately after being extruded through a die in such a way as to regulate the movement of the resin from its inside to the extruding direction. CONSTITUTION:A resistance is offered to a pipy resin immediately after being extruded through a die from a flange material 78 in such a way as to regulate its movement toward the extruding direction. After passing through the die 72, the pipy resin is temporarily stopped between the die 72 and the flange material and expanded cylindrically there. Since a slight turning force is given to the resin being extruded through the die 72 by the rotation of a screw 34, a spiral uneven shape is formed on the periphery of the resin passing through the flange material 78. If the rotation of the molten resin is controlled, a pipe whose periphery is provided with a circularly uneven shape can be molded.
JP56077316A 1981-05-21 1981-05-21 Method and apparatus for molding thermoplastic resin pipe by extrusion Pending JPS57191024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56077316A JPS57191024A (en) 1981-05-21 1981-05-21 Method and apparatus for molding thermoplastic resin pipe by extrusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077316A JPS57191024A (en) 1981-05-21 1981-05-21 Method and apparatus for molding thermoplastic resin pipe by extrusion

Publications (1)

Publication Number Publication Date
JPS57191024A true JPS57191024A (en) 1982-11-24

Family

ID=13630514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077316A Pending JPS57191024A (en) 1981-05-21 1981-05-21 Method and apparatus for molding thermoplastic resin pipe by extrusion

Country Status (1)

Country Link
JP (1) JPS57191024A (en)

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