DK201170322A - Annular extrusion head - Google Patents

Annular extrusion head Download PDF

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Publication number
DK201170322A
DK201170322A DKPA201170322A DKPA201170322A DK201170322A DK 201170322 A DK201170322 A DK 201170322A DK PA201170322 A DKPA201170322 A DK PA201170322A DK PA201170322 A DKPA201170322 A DK PA201170322A DK 201170322 A DK201170322 A DK 201170322A
Authority
DK
Denmark
Prior art keywords
extrusion head
mandrel
plastic material
cylinder
soft plastic
Prior art date
Application number
DKPA201170322A
Other languages
Danish (da)
Inventor
Demanze Frederic
Guignon Mickael
Original Assignee
Technip France
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 Technip France filed Critical Technip France
Publication of DK201170322A publication Critical patent/DK201170322A/en
Application granted granted Critical
Publication of DK178636B1 publication Critical patent/DK178636B1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/18—Organic compounds containing oxygen
    • C10L1/19—Esters ester radical containing compounds; ester ethers; carbonic acid esters
    • 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
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
    • C10L1/026—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only for compression ignition
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
    • C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
    • C11C3/003—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fatty acids with alcohols
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • 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
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • 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
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/156—Coating two or more articles simultaneously
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to an extrusion head (10) inciuding a cylinder (18) and a mandrel (12), said cylinder coaxially covering said mandrel so as to form an an nular chamber (20), said annular chamber having an upstream portion (22) and, opposite said portion, a downstream portion (24) extended by a pair of circular lips (26), said extrusion head (10) inciuding an inlet opening (34) for injecting said soft plastic material which flows into said upstream portion forming a plural ity of flows of soft plastic material, said flows being suitable for joining together SO as to preform a sleeve of a soft plastic material. Said head includes at least one dispersion grating (32) extending circumferentially between said mandrel (12) and said cylinder (18), and radially from said mandrel to said cylinder; and said sleeve of soft plastic material is forced through said at least one dispersion grating (32) SO as to fragment and disperse said soft plastic material.

Description

Claims 1. An annular extrusion head (10) for forming a tubular sheath made of plastics material, said extrusion head comprising a cylinder (18) and a mandrel (12), said cylinder coaxially covering said mandrel to form an annular chamber (20) between said cylinder and said mandrel, said annular chamber having an upstream portion (22), in which said cylinder and said mandrel are joined together, and, opposite thereto, a downstream portion (24) extended by a pair of circular lips (26) opening out onto the outside of said extrusion head, said extrusion head (10) comprising at least one inlet opening (34), for injection of said softened plastics material into the inside of said upstream portion (22), said softened plastics material being fit to flow into said upstream portion, forming a plurality of flows of softened plastics material, said flows being fit to re-merge towards said downstream portion (24) as claimed in junction zones, in such a way as to preform a sleeve of softened plastics material, said sleeve of softened plastics material being intended to be drawn axially into said downstream portion (24) in order to pass continuously through said pair of circular lips (26) and form said tubular sheath outside said extrusion head, characterized in that it additionally comprises: - at least one dispersion grate (32) mounted between said downstream portion (24) and said upstream portion (22) of said annular chamber (20), said at least one dispersion grate extending circumferentially between said mandrel (12) and said cylinder (18), and radially from said mandrel to said cylinder; - at least one filter disposed against said dispersion grate, said filter having meshes of a diameter less than one millimeter; and in that said sleeve of softened plastics material is intended to be forced through said at least one dispersion grate (32) and said filter in such a way as to fragment and disperse said softened plastics material of said junction zones inside said sleeve of softened plastics material. 2. The extrusion head as claimed in claim 1, characterized in that said at least one dispersion grate (32) comprises a crown (36) having two mutually op- posing faces (35, 37), said crown having a plurality of axial holes (38) passing through said crown from one face to the other. 3. The extrusion head as claimed in claim 2, characterized in that said crown (36) has a number of holes (38) ranging between 60 and 140 holes per 100 cm2. 4. The extrusion head as claimed in claim 2 or 3, characterized in that said plurality of holes (38) corresponds to an open surface representing between 30 and 40% of said opposing faces. 5. The extrusion head as claimed in any one of claims 2 to 4, characterized in that said holes (38) are of cylindrical rotational symmetry, and in that the ratio of their length to their diameter ranges between 2 and 5. 6. The extrusion head as claimed in any one of claims 1 to 5, characterized in that it comprises at least two dispersion grates (32) held at a distance apart and angularly offset one to another so as to form chicanes in said upstream portion (24). 7. The extrusion head as claimed in any one of claims 1 to 6, characterized in that said mandrel (12) has at least one helical distribution channel (31), which extends from said upstream portion (22) towards said downstream portion (24) in order to guide the softened plastics material from said upstream portion towards said downstream portion. 8. The extrusion head as claimed in any one of claims 1 to 7, characterized in that said mandrel (12) and said cylinder (18) extend in parallel in a substantially frustoconical manner at the level of said upstream portion (22) of said annular chamber (20), such as to form a substantially frustoconical annular chamber converging towards said downstream portion (24) of said annular chamber. 9. The extrusion head as claimed in any one of claims 1 to 8, characterized in that said downstream portion (24) of said annular chamber (20) forms a free space of cylindrical symmetry, which extends axially from said dispersion grate (32) to said pair of circular lips (26) over a distance greater than the axial length of said upstream portion (22). 10. The extrusion head as claimed in claim 9, characterized in that said free space of cylindrical symmetry has a thickness greater than the thickness of said upstream portion (22) of said annular chamber (20).Claims 1. An annular extrusion head (10) for forming a tubular sheath made of plastic material, said extrusion head comprising a cylinder (18) and a mandrel (12), said cylinder coaxially covering said mandrel to form an annular chamber (20) between said cylinder and said mandrel, said annular chamber having an upstream portion (22), in which said cylinder and said mandrel are joined together, and, opposite thereto, a downstream portion (24) extended by a pair of circular lips (26) opening out onto the outside of said extrusion head, said extrusion head (10) comprising at least one inlet opening (34), for injection of said softened plastic material into the inside of said upstream portion (22), said softened plastic material being fit to flow into said upstream portion, forming a plurality of flows of softened plastics material, said flows being fit to re-merge towards said downstream portion (24) as claimed in junction zones, in such a way as to preform a sleeve of softened plastics material, said sleeve of softened plastics material being intended to be drawn axially into said downstream portion (24) in order to pass continuously through said pair of circular lips (26) and form said tubular sheath outside said extrusion head, characterized in that it additionally comprises: - at least one dispersion grate (32) mounted between said downstream portion (24) and said upstream portion (22) of said annular chamber (20), said at least one dispersion grate extending circumferentially between said mandrel (12) and said cylinder (18), and radially from said mandrel to said cylinder; - at least one filter disposed against said dispersion grate, said filter having meshes of a diameter less than one millimeter; and in that said sleeve of softened plastics material is intended to be forced through said at least one dispersion grate (32) and said filter in such a manner as to fragment and disperse said softened plastics material of said junction zones within said sleeve of softened plastics materialize. 2. The extrusion head as claimed in claim 1, characterized in that said at least one dispersion grate (32) comprises a crown (36) having two mutually opposing faces (35, 37), said crown having a plurality of axial holes (38) passing through said crown from one face to the other. 3. The extrusion head as claimed in claim 2, characterized in that said crown (36) has a number of holes (38) ranging between 60 and 140 holes per 100 cm2. 4. The extrusion head as claimed in claim 2 or 3, characterized in that said plurality of holes (38) correspond to an open surface representing between 30 and 40% of said opposing faces. The extrusion head as claimed in any one of claims 2 to 4, characterized in that said holes (38) are of cylindrical rotational symmetry, and in that the ratio of their length to their diameter ranges between 2 and 5. 6. The extrusion head as claimed in any one of claims 1 to 5, characterized in that it comprises at least two dispersion grates (32) held at a distance apart and angularly offset one to another so as to form chicanes in said upstream portion (24). The extrusion head as claimed in any one of claims 1 to 6, characterized in that said mandrel (12) has at least one helical distribution channel (31), which extends from said upstream portion (22) towards said downstream portion (24). ) in order to guide the softened plastic material from said upstream portion towards said downstream portion. The extrusion head as claimed in any one of claims 1 to 7, characterized in that said mandrel (12) and said cylinder (18) extend in parallel in a substantially frustoconical manner at the level of said upstream portion (22) of said annular chamber (20), such as to form a substantially frustoconical annular chamber converging towards said downstream portion (24) or said annular chamber. 9. The extrusion head as claimed in any one of claims 1 to 8, characterized in that said downstream portion (24) of said annular chamber (20) forms a free space of cylindrical symmetry, which extends axially from said dispersion grid (32). said pair of circular lips (26) over a distance greater than the axial length of said upstream portion (22). The extrusion head as claimed in claim 9, characterized in that said free space of cylindrical symmetry has a thickness greater than the thickness of said upstream portion (22) or said annular chamber (20).

DKPA201170322A 2008-12-23 2011-06-23 Annular extrusion head DK178636B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0807428A FR2940170B1 (en) 2008-12-23 2008-12-23 ANNULAR EXTRUSION HEAD
PCT/FR2009/052614 WO2010072955A1 (en) 2008-12-23 2009-12-18 Annular extrusion head

Publications (2)

Publication Number Publication Date
DK201170322A true DK201170322A (en) 2011-06-23
DK178636B1 DK178636B1 (en) 2016-09-26

Family

ID=40750939

Family Applications (1)

Application Number Title Priority Date Filing Date
DKPA201170322A DK178636B1 (en) 2008-12-23 2011-06-23 Annular extrusion head

Country Status (6)

Country Link
BR (1) BRPI0922470B1 (en)
DK (1) DK178636B1 (en)
FR (1) FR2940170B1 (en)
GB (1) GB2478219B (en)
MY (1) MY160297A (en)
WO (1) WO2010072955A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2973276B1 (en) * 2011-03-29 2013-03-29 Technip France ANNULAR EXTRUSION HEAD FOR HOMOGENEOUS TUBULAR SHEATH

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957942A (en) * 1969-02-20 1976-05-18 Rol Process of coating an elongated support
DE1959348A1 (en) * 1969-11-26 1971-06-09 Kautex Werke Gmbh Extruding thermoplastics with constant extr - usion temps
US3932102A (en) * 1974-11-01 1976-01-13 Koehring Company Spiral design pipehead
US5045254A (en) * 1989-01-23 1991-09-03 Amoco Corporation Process for producing tubular film from thermoplastic molten material
JPH09109228A (en) * 1995-10-19 1997-04-28 Beishin Kogyo Kk Foaming expediting method for foamed synthetic resin molding
JP3450249B2 (en) * 1999-08-19 2003-09-22 株式会社金陽社 Extrusion molding method and extrusion molding apparatus

Also Published As

Publication number Publication date
BRPI0922470B1 (en) 2019-06-18
GB2478219B (en) 2013-05-22
DK178636B1 (en) 2016-09-26
WO2010072955A1 (en) 2010-07-01
BRPI0922470A2 (en) 2015-12-15
MY160297A (en) 2017-02-28
GB2478219A (en) 2011-08-31
GB201108739D0 (en) 2011-07-06
FR2940170B1 (en) 2012-11-02
FR2940170A1 (en) 2010-06-25

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