FR2252202A1 - Mandrel for shaping heat shrink tubing - with means for quenching the extrudate prior to dilation - Google Patents

Mandrel for shaping heat shrink tubing - with means for quenching the extrudate prior to dilation

Info

Publication number
FR2252202A1
FR2252202A1 FR7342924A FR7342924A FR2252202A1 FR 2252202 A1 FR2252202 A1 FR 2252202A1 FR 7342924 A FR7342924 A FR 7342924A FR 7342924 A FR7342924 A FR 7342924A FR 2252202 A1 FR2252202 A1 FR 2252202A1
Authority
FR
France
Prior art keywords
mandrel
heat shrink
dilation
quenching
dia
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.)
Withdrawn
Application number
FR7342924A
Other languages
French (fr)
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.)
FLAX VALERE FR
Original Assignee
FLAX VALERE FR
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 FLAX VALERE FR filed Critical FLAX VALERE FR
Priority to FR7342924A priority Critical patent/FR2252202A1/en
Publication of FR2252202A1 publication Critical patent/FR2252202A1/en
Withdrawn legal-status Critical Current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
    • 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
    • B29C55/26—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes biaxial
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C2037/92—Lubricating
    • 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
    • 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
    • B29C48/03—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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0049—Heat shrinkable

Landscapes

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

Abstract

Tubing made by extrusion of a relatively small dia, thick wall tube over a length of mandrel of constant bore and subject to external cooling, before reaching a portion of mandrel of greater dia. The enlarged mandrel is continued at constant or slightly diminishing dia. until the passing extrudate is sufficiently chilled to be dimensionally stable. Used for production of biaxially oriented tubing with heat shrink potential.
FR7342924A 1973-11-23 1973-11-23 Mandrel for shaping heat shrink tubing - with means for quenching the extrudate prior to dilation Withdrawn FR2252202A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7342924A FR2252202A1 (en) 1973-11-23 1973-11-23 Mandrel for shaping heat shrink tubing - with means for quenching the extrudate prior to dilation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7342924A FR2252202A1 (en) 1973-11-23 1973-11-23 Mandrel for shaping heat shrink tubing - with means for quenching the extrudate prior to dilation

Publications (1)

Publication Number Publication Date
FR2252202A1 true FR2252202A1 (en) 1975-06-20

Family

ID=9128578

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7342924A Withdrawn FR2252202A1 (en) 1973-11-23 1973-11-23 Mandrel for shaping heat shrink tubing - with means for quenching the extrudate prior to dilation

Country Status (1)

Country Link
FR (1) FR2252202A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371769A2 (en) * 1988-11-30 1990-06-06 Btg International Limited Tubular materials
EP0507613A2 (en) * 1991-04-03 1992-10-07 Mitsui Petrochemical Industries, Ltd. Ultra-high molecular weight polyethylene thin-wall pipe, and method of and apparatus for manufacturing the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371769A2 (en) * 1988-11-30 1990-06-06 Btg International Limited Tubular materials
EP0371769A3 (en) * 1988-11-30 1991-10-09 Btg International Limited Tubular materials
US5650114A (en) * 1988-11-30 1997-07-22 British Technology Group Limited Tubular materials
US5665297A (en) * 1988-11-30 1997-09-09 British Technolog Group Limited Tubular materials
US5910346A (en) * 1988-11-30 1999-06-08 Btg International Limited Tubular materials
EP0507613A2 (en) * 1991-04-03 1992-10-07 Mitsui Petrochemical Industries, Ltd. Ultra-high molecular weight polyethylene thin-wall pipe, and method of and apparatus for manufacturing the same
EP0507613A3 (en) * 1991-04-03 1993-09-08 Mitsui Petrochemical Industries, Ltd. Ultra-high molecular weight polyethylene thin-wall pipe, and method of and apparatus for manufacturing the same
US5290498A (en) * 1991-04-03 1994-03-01 Mitsui Petrochemical Industries, Ltd. Ultra-high molecular weight polyethylene thin-wall pipe, and method of and apparatus for manufacturing the same
US5417561A (en) * 1991-04-03 1995-05-23 Mitsui Petrochemical Industries, Ltd. Apparatus for manufacturing of ultra high molecular weight polyethylene thin wall pipe
US5683767A (en) * 1991-04-03 1997-11-04 Mitsui Petrochemical Industries, Ltd. Ultra-high molecular weight polyethylene thin-wall pipe, and method of an apparatus for manufacturing the same

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Legal Events

Date Code Title Description
ST Notification of lapse