GB1380397A - Elastic memory tubing - Google Patents

Elastic memory tubing

Info

Publication number
GB1380397A
GB1380397A GB1448071A GB1448071A GB1380397A GB 1380397 A GB1380397 A GB 1380397A GB 1448071 A GB1448071 A GB 1448071A GB 1448071 A GB1448071 A GB 1448071A GB 1380397 A GB1380397 A GB 1380397A
Authority
GB
United Kingdom
Prior art keywords
tube
lubricant
composition
cooling
softening point
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
GB1448071A
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Priority to GB1448071A priority Critical patent/GB1380397A/en
Priority to IT50166/72A priority patent/IT957855B/en
Priority to DE19722222856 priority patent/DE2222856A1/en
Priority to NL7206332A priority patent/NL7206332A/xx
Priority to FR7216805A priority patent/FR2137767B1/fr
Priority to AU42249/72A priority patent/AU4224972A/en
Publication of GB1380397A publication Critical patent/GB1380397A/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
    • B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of 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
    • B29C48/03—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
    • 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
    • B29C48/001—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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride

Abstract

1380397 Extruded heat-shrinkable tubing BRITISH INSULATED CALLENDERS CABLES Ltd 11 May 1972 [12 May 1971] 14480/71 Heading B5A [Also in Division F2] A diametrically heat shrinkable tube of a P.V.C. composition having a B.S. softness of 10-80, e.g. containing 30-100 parts by weight of an ester type plasticizer per 100 parts resin, is continuously made by extruding a tube 3 of the composition (either horizontally or vertically); cooling the tube to a temperature above the composition softening point and at which it is predominantly elastically deformable; applying a lubricant to the exterior tube surface; passing the tube, via a steel sealing die 6 of smaller diameter than the tube, into and through a cooled chamber 6 through the walls of which suction is applied to expand the tube to the diameter of the chamber, at which it is set by cooling to below the composition softening point. The tube interior may be at above atmospheric pressure during expansion. The cooling to above the softening point may be effected through a bath of fluid which is compatible with, or may comprise the lubricant, but in the described embodiment is effected by one or more air jets 4 directed transversely, or parallel, to the extruding tube 3, e.g. from an annular nozzle through which the tube 3 passes, with the lubricant being applied from a drip feed 5. The vacuum is applied from a manifold 10 through axially spaced wall slots of the chamber, which is cooled by a surrounding water circulating jacket and is also provided with a downstream sealing die 11 through which the expanded and set tube is drawn by an endless belt device 12. The lubricant may comprise a specified silicon oil, a petroleumderived synthetic detergent which is subsequently removed by washing, or a suspension of P.T.F.E. in silicone oil.
GB1448071A 1971-05-12 1971-05-12 Elastic memory tubing Expired GB1380397A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1448071A GB1380397A (en) 1971-05-12 1971-05-12 Elastic memory tubing
IT50166/72A IT957855B (en) 1971-05-12 1972-05-10 METHOD FOR MANUFACTURING AN ELASTIC HYSTERESIS TUBE
DE19722222856 DE2222856A1 (en) 1971-05-12 1972-05-10 Process for the production of elastic storage hoses
NL7206332A NL7206332A (en) 1971-05-12 1972-05-10
FR7216805A FR2137767B1 (en) 1971-05-12 1972-05-10
AU42249/72A AU4224972A (en) 1971-05-12 1972-05-12 Elastic memory tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1448071A GB1380397A (en) 1971-05-12 1971-05-12 Elastic memory tubing

Publications (1)

Publication Number Publication Date
GB1380397A true GB1380397A (en) 1975-01-15

Family

ID=10041960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1448071A Expired GB1380397A (en) 1971-05-12 1971-05-12 Elastic memory tubing

Country Status (6)

Country Link
AU (1) AU4224972A (en)
DE (1) DE2222856A1 (en)
FR (1) FR2137767B1 (en)
GB (1) GB1380397A (en)
IT (1) IT957855B (en)
NL (1) NL7206332A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000016963A1 (en) * 1998-09-22 2000-03-30 Egeplast Werner Strumann Gmbh & Co. Kg Device for producing plastic pipes
FR2862015A1 (en) * 2003-11-10 2005-05-13 Pechiney Capsules Capsule e.g. crown cap, fabrication method for e.g. effervescent wine bottle, involves forming extruded tube made up of thermoplastic material by die and axially drawing tube in order to obtain axially elongated tube
US7335010B2 (en) 1998-09-22 2008-02-26 Egeplast Werner Strumann Gmbh & Co. Kg Device for producing rigid plastic pipes
CN109878065A (en) * 2019-04-02 2019-06-14 青岛维思顿智能新材料有限公司 The deformation device of shape memory column packing element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8527300D0 (en) * 1985-11-06 1985-12-11 Victaulic Plc Extrusion of products

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000016963A1 (en) * 1998-09-22 2000-03-30 Egeplast Werner Strumann Gmbh & Co. Kg Device for producing plastic pipes
US7335010B2 (en) 1998-09-22 2008-02-26 Egeplast Werner Strumann Gmbh & Co. Kg Device for producing rigid plastic pipes
FR2862015A1 (en) * 2003-11-10 2005-05-13 Pechiney Capsules Capsule e.g. crown cap, fabrication method for e.g. effervescent wine bottle, involves forming extruded tube made up of thermoplastic material by die and axially drawing tube in order to obtain axially elongated tube
WO2005046969A1 (en) * 2003-11-10 2005-05-26 Alcan Packaging Capsules Method for the production of capsules with a heat-shrinkable skirt and capsules obtained according to said method
AU2004289497B2 (en) * 2003-11-10 2010-04-22 Alcan Packaging Capsules Method for the production of capsules with a heat-shrinkable skirt and capsules obtained according to said method
AU2004289497C1 (en) * 2003-11-10 2010-10-14 Alcan Packaging Capsules Method for the production of capsules with a heat-shrinkable skirt and capsules obtained according to said method
US8226867B2 (en) 2003-11-10 2012-07-24 Alcan Packaging Capsules Method for the production of caps with a heat shrinkable skirt and caps obtained according to the method
CN109878065A (en) * 2019-04-02 2019-06-14 青岛维思顿智能新材料有限公司 The deformation device of shape memory column packing element
CN109878065B (en) * 2019-04-02 2024-02-13 青岛维思顿智能新材料有限公司 Shape memory columnar rubber cylinder deforming device

Also Published As

Publication number Publication date
AU4224972A (en) 1973-11-15
FR2137767B1 (en) 1975-08-01
NL7206332A (en) 1972-11-14
DE2222856A1 (en) 1972-12-07
FR2137767A1 (en) 1972-12-29
IT957855B (en) 1973-10-20

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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