JPS54139965A - Method of blowing air into stretching tube of thermoplastic resin and device therefor - Google Patents

Method of blowing air into stretching tube of thermoplastic resin and device therefor

Info

Publication number
JPS54139965A
JPS54139965A JP4779978A JP4779978A JPS54139965A JP S54139965 A JPS54139965 A JP S54139965A JP 4779978 A JP4779978 A JP 4779978A JP 4779978 A JP4779978 A JP 4779978A JP S54139965 A JPS54139965 A JP S54139965A
Authority
JP
Japan
Prior art keywords
tube
slit
nip rollers
nozzle
compressed air
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
JP4779978A
Other languages
Japanese (ja)
Other versions
JPS598340B2 (en
Inventor
Takamasa Fujita
Takefumi Hatayama
Kumao Miura
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.)
Asahi Dow Ltd
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Dow Ltd
Asahi Chemical Industry Co 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 Asahi Dow Ltd, Asahi Chemical Industry Co Ltd filed Critical Asahi Dow Ltd
Priority to JP4779978A priority Critical patent/JPS598340B2/en
Publication of JPS54139965A publication Critical patent/JPS54139965A/en
Publication of JPS598340B2 publication Critical patent/JPS598340B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE: The heated and undrawn tube moving between two sets of nip rollers is slit upward near the downstream nip rollers and compressed air is blown into the tube from the slit, thus stretching safely and steadily the tube.
CONSTITUTION: The heated and undrawn tube, coming out of the upstream nip rollers, is taken up with the downstream nip rollers and at the same time the tube is stretched in the longitudinal direction, in which cutter edge 7 is stricked into the tube to form slit, from which a compressed air is blown into using nozzle 8. The cutter edge is preferably united with nozzle. The top of the nozzle is positioned so as not to project higher than the top of the edge. The volume of the compressed air fed is required to be more than that leaking from the slit. When the diameter of stretched tube fluctuates, the position of the cutter edge is automatically controlled by the operation of defletor 9.
COPYRIGHT: (C)1979,JPO&Japio
JP4779978A 1978-04-24 1978-04-24 Thermoplastic resin stretching air injection method and device Expired JPS598340B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4779978A JPS598340B2 (en) 1978-04-24 1978-04-24 Thermoplastic resin stretching air injection method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4779978A JPS598340B2 (en) 1978-04-24 1978-04-24 Thermoplastic resin stretching air injection method and device

Publications (2)

Publication Number Publication Date
JPS54139965A true JPS54139965A (en) 1979-10-30
JPS598340B2 JPS598340B2 (en) 1984-02-24

Family

ID=12785409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4779978A Expired JPS598340B2 (en) 1978-04-24 1978-04-24 Thermoplastic resin stretching air injection method and device

Country Status (1)

Country Link
JP (1) JPS598340B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983337A (en) * 1987-11-12 1991-01-08 Kohjin Co., Ltd. Method and apparatus for producing stretched film

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59167536U (en) * 1983-04-23 1984-11-09 和田　信二 aroma device
JPS61284251A (en) * 1985-06-12 1986-12-15 株式会社　ダスキン Intermittent operation type chemical agent diffuser
JPH0562249U (en) * 1992-01-30 1993-08-20 株式会社リフレ Container for sustained-release drug such as fragrance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983337A (en) * 1987-11-12 1991-01-08 Kohjin Co., Ltd. Method and apparatus for producing stretched film

Also Published As

Publication number Publication date
JPS598340B2 (en) 1984-02-24

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