GB1416575A - Apparatus for continuous production of biaxially shrinkable thermoplastic synthetic resin tube - Google Patents

Apparatus for continuous production of biaxially shrinkable thermoplastic synthetic resin tube

Info

Publication number
GB1416575A
GB1416575A GB1885373A GB1885373A GB1416575A GB 1416575 A GB1416575 A GB 1416575A GB 1885373 A GB1885373 A GB 1885373A GB 1885373 A GB1885373 A GB 1885373A GB 1416575 A GB1416575 A GB 1416575A
Authority
GB
United Kingdom
Prior art keywords
mandrel
tube
die
bath
distance
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.)
Expired
Application number
GB1885373A
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.)
Sakai Chemical Industry Co Ltd
Original Assignee
Sakai 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
Priority to US00215687A priority Critical patent/US3752630A/en
Application filed by Sakai Chemical Industry Co Ltd filed Critical Sakai Chemical Industry Co Ltd
Priority to GB1885373A priority patent/GB1416575A/en
Priority to GB1913673A priority patent/GB1416576A/en
Priority to DE2320343A priority patent/DE2320343A1/en
Priority to BE2052736A priority patent/BE798792A/en
Priority to FR7315443A priority patent/FR2227116B1/fr
Publication of GB1416575A publication Critical patent/GB1416575A/en
Expired 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/08—Making preforms having internal stresses, e.g. plastic memory by stretching 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
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/902—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies internally
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

1416575 Extruding heat shrinkable tubes SAKAI KASEI KOGYO KK 18 April 1973 18853/73 Headings B5A and B5B A biaxially oriented heat shrinkable thermoplastic resin tube, is produced by drawing a vertically downwardly extruding tube S around a frusto-conical upstream portion 7 of a mandrel B, to produce diametrical stretching and oreintation, and then around a following downstream cylindrical portion 8 of the mandrel, to produce axial stretching and orientation, over a distance H which is adjustable, prior to entry into water coolant at a level 10<SP>11</SP> in a surround- ing cooling bath 10. By varying the distance H, by vertical adjustment of the bath 10 along a rod 16, whilst maintaining constant the speed at which the tube S is drawn from the mandrel B by pull rolls (19) Fig. 1 (not shown) in a water tank (18), the rate of stretching and amount of axial orientation is varied over the distance H independently of the dimensions of the tube S<SP>1</SP>. The mandrel B is supported by a tube 4, attached to the die mandrel 1 and from passages 5 of which supporting air at atmospheric pressure is admitted, via die passages 2, 3. The water bath 10 seals around the tube at a seal 12, and water is circulated thereto via an inlet 9, and overflowing at the bath upper level. The die is supplied with the thermoplastics from a vertically extending screw, and barrel surrounded by electrical heaters. An air cooling ring may also be provided intermediate the die and mandrel.
GB1885373A 1972-01-05 1973-04-18 Apparatus for continuous production of biaxially shrinkable thermoplastic synthetic resin tube Expired GB1416575A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US00215687A US3752630A (en) 1972-01-05 1972-01-05 Apparatus for continuous production of thermoplastic synthetic resin tube with heat-shrinking property
GB1885373A GB1416575A (en) 1973-04-18 1973-04-18 Apparatus for continuous production of biaxially shrinkable thermoplastic synthetic resin tube
GB1913673A GB1416576A (en) 1972-01-05 1973-04-19 Joints between concrete parts
DE2320343A DE2320343A1 (en) 1972-01-05 1973-04-21 Plastics extruder
BE2052736A BE798792A (en) 1973-04-18 1973-04-27 APPARATUS FOR THE CONTINUOUS MANUFACTURING OF A TUBE OF THERMOPLASTIC SYNTHETIC RESIN
FR7315443A FR2227116B1 (en) 1973-04-18 1973-04-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1885373A GB1416575A (en) 1973-04-18 1973-04-18 Apparatus for continuous production of biaxially shrinkable thermoplastic synthetic resin tube

Publications (1)

Publication Number Publication Date
GB1416575A true GB1416575A (en) 1975-12-03

Family

ID=10119535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1885373A Expired GB1416575A (en) 1972-01-05 1973-04-18 Apparatus for continuous production of biaxially shrinkable thermoplastic synthetic resin tube

Country Status (3)

Country Link
BE (1) BE798792A (en)
FR (1) FR2227116B1 (en)
GB (1) GB1416575A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252749A2 (en) * 1986-07-11 1988-01-13 Fujikura Ltd. Apparatus for continuously producing heat-shrinkable crosslinked resin tube
WO2008131221A2 (en) * 2007-04-19 2008-10-30 Smith & Nephew, Inc. Orientated polymeric devices
US9000066B2 (en) 2007-04-19 2015-04-07 Smith & Nephew, Inc. Multi-modal shape memory polymers
US9005303B2 (en) 2007-04-19 2015-04-14 Smith & Nephew, Inc. Knee and shoulder joint prosthesis
US9308300B2 (en) 2007-04-19 2016-04-12 Smith & Nephew, Inc. Prosthetic implants
US9545291B2 (en) 2007-04-17 2017-01-17 Smith & Nephew Plc Dental implant
US9770534B2 (en) 2007-04-19 2017-09-26 Smith & Nephew, Inc. Graft fixation
US9815240B2 (en) 2007-04-18 2017-11-14 Smith & Nephew, Inc. Expansion moulding of shape memory polymers

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252749A2 (en) * 1986-07-11 1988-01-13 Fujikura Ltd. Apparatus for continuously producing heat-shrinkable crosslinked resin tube
EP0252749A3 (en) * 1986-07-11 1990-02-14 Fujikura Ltd. Apparatus for continuously producing heat-shrinkable crosslinked resin tube
US9545291B2 (en) 2007-04-17 2017-01-17 Smith & Nephew Plc Dental implant
US9815240B2 (en) 2007-04-18 2017-11-14 Smith & Nephew, Inc. Expansion moulding of shape memory polymers
CN101730551A (en) * 2007-04-19 2010-06-09 史密夫和内修有限公司 orientated polymeric devices
JP2010536399A (en) * 2007-04-19 2010-12-02 スミス アンド ネフュー インコーポレーテッド Oriented polymer device
US8747976B2 (en) 2007-04-19 2014-06-10 Smith & Nephew, Inc. Orientated polymeric devices
US9000066B2 (en) 2007-04-19 2015-04-07 Smith & Nephew, Inc. Multi-modal shape memory polymers
US9005303B2 (en) 2007-04-19 2015-04-14 Smith & Nephew, Inc. Knee and shoulder joint prosthesis
CN101730551B (en) * 2007-04-19 2016-01-27 史密夫和内修有限公司 Orientated polymeric devices
US9308293B2 (en) 2007-04-19 2016-04-12 Smith & Nephew, Inc. Multi-modal shape memory polymers
US9308300B2 (en) 2007-04-19 2016-04-12 Smith & Nephew, Inc. Prosthetic implants
WO2008131221A3 (en) * 2007-04-19 2009-10-01 Smith & Nephew, Inc. Orientated polymeric devices
US9763709B2 (en) 2007-04-19 2017-09-19 Smith & Nephew, Inc. Orientated polymeric devices
US9770534B2 (en) 2007-04-19 2017-09-26 Smith & Nephew, Inc. Graft fixation
WO2008131221A2 (en) * 2007-04-19 2008-10-30 Smith & Nephew, Inc. Orientated polymeric devices

Also Published As

Publication number Publication date
FR2227116A1 (en) 1974-11-22
FR2227116B1 (en) 1976-05-28
BE798792A (en) 1973-08-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee