JPS5736628A - Method and apparatus for molding pipelike substance - Google Patents

Method and apparatus for molding pipelike substance

Info

Publication number
JPS5736628A
JPS5736628A JP11310980A JP11310980A JPS5736628A JP S5736628 A JPS5736628 A JP S5736628A JP 11310980 A JP11310980 A JP 11310980A JP 11310980 A JP11310980 A JP 11310980A JP S5736628 A JPS5736628 A JP S5736628A
Authority
JP
Japan
Prior art keywords
pipe
blow
pressure
pipelike
stretched
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
JP11310980A
Other languages
Japanese (ja)
Inventor
Tsutomu Suzuki
Sukeyoshi Wakamiya
Naokazu Takeuchi
Yoshihisa Hama
Katsuhiro Matsuo
Yoshiyuki Fujita
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 Heavy Industries Ltd
Toyobo Co Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Toyobo 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 Mitsubishi Heavy Industries Ltd, Toyobo Co Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP11310980A priority Critical patent/JPS5736628A/en
Publication of JPS5736628A publication Critical patent/JPS5736628A/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
    • B29C55/24—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes radial

Abstract

PURPOSE:To mold continuously a plastic pipe excellent in heated size stability by a method wherein the plastic pipe is extruded, cooled, preheated, then pressed, stretched, blow-molded by the fluid having a pressure at which the pipe can be stretched and subsequently fixed thermally. CONSTITUTION:Thermoplastic resin such as polyethylene terephthalate or the like is extruded by an extrusion molding machine 1 from the pipe die 2, cooled, preheated by a sizer 3, a temperature controller 4 and then blow-molded through pressure fluid in a blow-stretching unit 5, fixed thermally by a thermal fixed device 7 in the middle of take-off units 6, 8 and taken off. The blow-molding machine 5 comprises an inner and an outer mandrel 9, 10, a fluid blowing hole 14, a support bar 11 and a pipelike substance 13b which is controlled at a temperature suitable for stretching is pressed and stretched by the gas which is blown from the fluid blowing hole 14 and which has a pressure capable of stretching the pipe. Further, the axial shrinkage is prevented by a method wherein the take-off units 6, 8 are synchronized by the thermal fixing device 7 in times of thermally fixing the pipe, while the circumferential shrinkage is prevented by a method wherein the air between the outside of the pipelike substance 13 and the thermal fixing device 7 is exhausted from the direction of the arrow B and reduced in pressure.
JP11310980A 1980-08-18 1980-08-18 Method and apparatus for molding pipelike substance Pending JPS5736628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11310980A JPS5736628A (en) 1980-08-18 1980-08-18 Method and apparatus for molding pipelike substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11310980A JPS5736628A (en) 1980-08-18 1980-08-18 Method and apparatus for molding pipelike substance

Publications (1)

Publication Number Publication Date
JPS5736628A true JPS5736628A (en) 1982-02-27

Family

ID=14603722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11310980A Pending JPS5736628A (en) 1980-08-18 1980-08-18 Method and apparatus for molding pipelike substance

Country Status (1)

Country Link
JP (1) JPS5736628A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264931A (en) * 1986-04-14 1987-11-17 エル・イクス・エス・シユルンプフテヒニク−ガルニトウ−レン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Plastic molded form having shape memory and method and device for manufacturing said plastic molded form
EP0446416A2 (en) * 1990-03-16 1991-09-18 Nkk Corporation Method of extruding thermoplastic resin pipe
US5236325A (en) * 1990-11-16 1993-08-17 Friedrich Theysohn Gmbh Apparatus for producing an extruded profile with thrust-resistant spacer
CN102294811A (en) * 2011-09-02 2011-12-28 宁波华业材料科技有限公司 Method for forming plastic grass
CN103921350A (en) * 2014-04-25 2014-07-16 山大鲁能信息科技有限公司 Pipe sectional material mold with adjustable inner diameter and working method thereof
CN106182791A (en) * 2016-07-08 2016-12-07 安徽致达包装有限公司 A kind of POF heat shrink films preparation method for tobacco smoke packaging

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264931A (en) * 1986-04-14 1987-11-17 エル・イクス・エス・シユルンプフテヒニク−ガルニトウ−レン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Plastic molded form having shape memory and method and device for manufacturing said plastic molded form
JPH081311U (en) * 1986-04-14 1996-08-20 エル イクス エス カーベルガルニトゥーレン ゲゼルシヤフト ミット ベシュレンクテル ハフツング Equipment for manufacturing plastic molded products with shape memory
JPH081310U (en) * 1986-04-14 1996-08-20 エル イクス エス カーベルガルニトゥーレン ゲゼルシヤフト ミット ベシュレンクテル ハフツング Plastic molded product with shape memory
EP0446416A2 (en) * 1990-03-16 1991-09-18 Nkk Corporation Method of extruding thermoplastic resin pipe
EP0446416A3 (en) * 1990-03-16 1991-11-13 Nkk Corporation Method of extruding thermoplastic resin pipe
US5236325A (en) * 1990-11-16 1993-08-17 Friedrich Theysohn Gmbh Apparatus for producing an extruded profile with thrust-resistant spacer
CN102294811A (en) * 2011-09-02 2011-12-28 宁波华业材料科技有限公司 Method for forming plastic grass
CN103921350A (en) * 2014-04-25 2014-07-16 山大鲁能信息科技有限公司 Pipe sectional material mold with adjustable inner diameter and working method thereof
CN103921350B (en) * 2014-04-25 2016-03-30 山大鲁能信息科技有限公司 A kind of pipeline profile mould of adjustable diameter and method of work thereof
CN106182791A (en) * 2016-07-08 2016-12-07 安徽致达包装有限公司 A kind of POF heat shrink films preparation method for tobacco smoke packaging

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