JPS5539346A - Production for heat-shrinking resin tube having kerf on its inside - Google Patents

Production for heat-shrinking resin tube having kerf on its inside

Info

Publication number
JPS5539346A
JPS5539346A JP11272578A JP11272578A JPS5539346A JP S5539346 A JPS5539346 A JP S5539346A JP 11272578 A JP11272578 A JP 11272578A JP 11272578 A JP11272578 A JP 11272578A JP S5539346 A JPS5539346 A JP S5539346A
Authority
JP
Japan
Prior art keywords
core
kerf
resin tube
tube
cutting edge
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
JP11272578A
Other languages
Japanese (ja)
Other versions
JPS6259643B2 (en
Inventor
Takaaki Yamaguchi
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 JP11272578A priority Critical patent/JPS5539346A/en
Publication of JPS5539346A publication Critical patent/JPS5539346A/en
Publication of JPS6259643B2 publication Critical patent/JPS6259643B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE: To provide a kerf easily on the inner side of a resin tube by means of a cutting edge equipped on the outer side of a diameter expanding core fixed to the core part of a circular die.
CONSTITUTION: When a resin tube 5 extruded from a circular die 1 makes its way directed by an arrow A, its diameter is exanded by a core 3, the heat-shrinking resin tube is produced continuously by being drawn by a pair of drawing roll 6. Since the resin tube which is passing the expanded part (conical part) of the core 3 is kept over the softening point, under the pour point, the core 3 is made up so that the medium for regulating temperature can pass through the inner side of the core 3. The core 3 is provided with a cutting edge 7 and a kerf is given on the inside of the tube. If the cutting edge 7 is mounted near the circular die 1 at the conical part of the core 3 the kerf hits the tube which is not elongated, that is, the relatively thick place of the tube and it is easy to regulate the depth of the kerf.
COPYRIGHT: (C)1980,JPO&Japio
JP11272578A 1978-09-13 1978-09-13 Production for heat-shrinking resin tube having kerf on its inside Granted JPS5539346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11272578A JPS5539346A (en) 1978-09-13 1978-09-13 Production for heat-shrinking resin tube having kerf on its inside

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11272578A JPS5539346A (en) 1978-09-13 1978-09-13 Production for heat-shrinking resin tube having kerf on its inside

Publications (2)

Publication Number Publication Date
JPS5539346A true JPS5539346A (en) 1980-03-19
JPS6259643B2 JPS6259643B2 (en) 1987-12-11

Family

ID=14593964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11272578A Granted JPS5539346A (en) 1978-09-13 1978-09-13 Production for heat-shrinking resin tube having kerf on its inside

Country Status (1)

Country Link
JP (1) JPS5539346A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02258323A (en) * 1988-11-30 1990-10-19 Natl Res Dev Corp Tubular member
JP2002001848A (en) * 2000-06-26 2002-01-08 Daiichi Vinyl Kk Resin-coated pipe easy to recycle
JP2003516889A (en) * 1999-12-14 2003-05-20 スリーエム イノベイティブ プロパティズ カンパニー Embossed film with controlled tearing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0295640A (en) * 1988-09-30 1990-04-06 Omron Tateisi Electron Co Paper sheet skew correction device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4533905Y1 (en) * 1969-04-02 1970-12-24
JPS49109461A (en) * 1973-02-21 1974-10-17

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4533905Y1 (en) * 1969-04-02 1970-12-24
JPS49109461A (en) * 1973-02-21 1974-10-17

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02258323A (en) * 1988-11-30 1990-10-19 Natl Res Dev Corp Tubular member
JP2003516889A (en) * 1999-12-14 2003-05-20 スリーエム イノベイティブ プロパティズ カンパニー Embossed film with controlled tearing
JP4668502B2 (en) * 1999-12-14 2011-04-13 スリーエム イノベイティブ プロパティズ カンパニー Embossed film with controlled tearing
JP2002001848A (en) * 2000-06-26 2002-01-08 Daiichi Vinyl Kk Resin-coated pipe easy to recycle

Also Published As

Publication number Publication date
JPS6259643B2 (en) 1987-12-11

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