JPS5586725A - Molding method of thermoplastic resin tube - Google Patents

Molding method of thermoplastic resin tube

Info

Publication number
JPS5586725A
JPS5586725A JP16276678A JP16276678A JPS5586725A JP S5586725 A JPS5586725 A JP S5586725A JP 16276678 A JP16276678 A JP 16276678A JP 16276678 A JP16276678 A JP 16276678A JP S5586725 A JPS5586725 A JP S5586725A
Authority
JP
Japan
Prior art keywords
thermoplastic resin
tip
mandrel
projection
die
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
JP16276678A
Other languages
Japanese (ja)
Inventor
Shingo Takashima
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 JP16276678A priority Critical patent/JPS5586725A/en
Publication of JPS5586725A publication Critical patent/JPS5586725A/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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • 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 mold a thermoplastic resin tube having a circular projection on the outer surface periphery thereof at a given interval by pushing thermoplastic resin retained at the outlet of a die ring as extruded in a tubular manner with the extrusion speed larger than the withdrawing speed intermittently. CONSTITUTION:A thermoplastic resin is extruded through a space between a die ring 1, provided with an orthogonal notch B on the inner surface entirely to the tip from the point A close to the tip face thereof, and a mandrel 2 to form a resin tube P. The moment the work reaches the point A for providing a circular projection P' on the outer surface of the pipe P in the circumferential direction, a withdrawing machine 3 is decelerated or halted. At the same time, a multisectional outer die 5 provided in contact with the tip face of the die ring 1 is closed and the resin fills the notch B to form a projection P'. With the outer die 5 opened, the withdrawing speed is put back to the normal level to mold the tube P having the projection P'. After cooled from the inside with a cooling jacket on an inside mandrel 6 provided at the tip of the mandrel 2, the pipe is withdrawn ahead with the withdrawing machine 3.
JP16276678A 1978-12-25 1978-12-25 Molding method of thermoplastic resin tube Pending JPS5586725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16276678A JPS5586725A (en) 1978-12-25 1978-12-25 Molding method of thermoplastic resin tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16276678A JPS5586725A (en) 1978-12-25 1978-12-25 Molding method of thermoplastic resin tube

Publications (1)

Publication Number Publication Date
JPS5586725A true JPS5586725A (en) 1980-06-30

Family

ID=15760810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16276678A Pending JPS5586725A (en) 1978-12-25 1978-12-25 Molding method of thermoplastic resin tube

Country Status (1)

Country Link
JP (1) JPS5586725A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495772A (en) * 1980-05-16 1985-01-29 Aisin Seiki Kabushiki Kaisha Brake master cylinder
FR2856335A1 (en) * 2003-06-23 2004-12-24 Sotep Soc Tech Extrusion Plast Manufacture of extruded plastic hosepipe with lengthwise inner ribs has pipe ends made without ribs to allow for fitting accessories

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137155A (en) * 1974-09-25 1976-03-29 Sekisui Chemical Co Ltd Atsunikubuto usunikubutoo kogo nyusuru jushikanno seizohoho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137155A (en) * 1974-09-25 1976-03-29 Sekisui Chemical Co Ltd Atsunikubuto usunikubutoo kogo nyusuru jushikanno seizohoho

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495772A (en) * 1980-05-16 1985-01-29 Aisin Seiki Kabushiki Kaisha Brake master cylinder
FR2856335A1 (en) * 2003-06-23 2004-12-24 Sotep Soc Tech Extrusion Plast Manufacture of extruded plastic hosepipe with lengthwise inner ribs has pipe ends made without ribs to allow for fitting accessories

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