JPS55132227A - Continuous production of u-shaped synthetic resin piece - Google Patents

Continuous production of u-shaped synthetic resin piece

Info

Publication number
JPS55132227A
JPS55132227A JP4062779A JP4062779A JPS55132227A JP S55132227 A JPS55132227 A JP S55132227A JP 4062779 A JP4062779 A JP 4062779A JP 4062779 A JP4062779 A JP 4062779A JP S55132227 A JPS55132227 A JP S55132227A
Authority
JP
Japan
Prior art keywords
pipe
section
cross
gourd
shaped
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.)
Granted
Application number
JP4062779A
Other languages
Japanese (ja)
Other versions
JPS6112777B2 (en
Inventor
Yasunori Saito
Takeshi Matsuzaki
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP4062779A priority Critical patent/JPS55132227A/en
Publication of JPS55132227A publication Critical patent/JPS55132227A/en
Publication of JPS6112777B2 publication Critical patent/JPS6112777B2/ja
Granted 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0063—Cutting longitudinally
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE:To manufacture a shaped piece of high dimensional accuracy and optional cross-sectional form at low cost, by deforming the cross section of an extruded thermoplastic resin pipe like a gourd and cutting off the pipe along the narrow part of the gourd-shaped cross section of the pipe. CONSTITUTION:After a thermoplastic resin pipe of hollow circular cross section is extruded, the cross section of the pipe is deformed like a hollow gourd. The resin pipe of the gourd-shaped cross section is cut off along the narrow part of the cross section so that the pipe is divided into two pieces. Two U-shaped long synthetic resin pieces are thus simultaneously manufactured. For the deformation to the gourd-shaped cross section, a method of using a die while heating and softening the extruded resin pipe or a similar method is adopted. Extrusion may be effected to provide notches on one or both of the inside and outside of the resin pipe in two positions symmetric with each other as to the axis of the pipe and divide it into the two pieces along the notches to facilitate the cutting-off and the fitting of the U-shaped piece on a protective piece.
JP4062779A 1979-04-03 1979-04-03 Continuous production of u-shaped synthetic resin piece Granted JPS55132227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4062779A JPS55132227A (en) 1979-04-03 1979-04-03 Continuous production of u-shaped synthetic resin piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4062779A JPS55132227A (en) 1979-04-03 1979-04-03 Continuous production of u-shaped synthetic resin piece

Publications (2)

Publication Number Publication Date
JPS55132227A true JPS55132227A (en) 1980-10-14
JPS6112777B2 JPS6112777B2 (en) 1986-04-10

Family

ID=12585771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4062779A Granted JPS55132227A (en) 1979-04-03 1979-04-03 Continuous production of u-shaped synthetic resin piece

Country Status (1)

Country Link
JP (1) JPS55132227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427378A2 (en) * 1989-11-09 1991-05-15 JMK International Inc. Method of forming an improved wiper blade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427378A2 (en) * 1989-11-09 1991-05-15 JMK International Inc. Method of forming an improved wiper blade

Also Published As

Publication number Publication date
JPS6112777B2 (en) 1986-04-10

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