GB629668A - Improvements relating to cellular thermoplastic materials - Google Patents

Improvements relating to cellular thermoplastic materials

Info

Publication number
GB629668A
GB629668A GB35719/46A GB3571946A GB629668A GB 629668 A GB629668 A GB 629668A GB 35719/46 A GB35719/46 A GB 35719/46A GB 3571946 A GB3571946 A GB 3571946A GB 629668 A GB629668 A GB 629668A
Authority
GB
United Kingdom
Prior art keywords
polythene
blowing agent
heating
mix
conductor
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
GB35719/46A
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.)
HAROLD FREDERIC WILSON
Telegraph Construction and Maintenance Co Ltd
Original Assignee
HAROLD FREDERIC WILSON
Telegraph Construction and Maintenance 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 NL67205D priority Critical patent/NL67205C/xx
Priority to FR957687D priority patent/FR957687A/fr
Application filed by HAROLD FREDERIC WILSON, Telegraph Construction and Maintenance Co Ltd filed Critical HAROLD FREDERIC WILSON
Priority to GB35719/46A priority patent/GB629668A/en
Publication of GB629668A publication Critical patent/GB629668A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
    • 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
    • B29C48/06—Rod-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
    • 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
    • B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the 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
    • B29C48/30—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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/91—Heating, e.g. for cross linking
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/20—Inserts
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3462—Cables
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Cellular polythene is produced by extruding a mix of polythene and a blowing agent and then heating the mix to decompose the blowing agent, which may be sodium bicarbonate, diazoaminobenzene or ammonium carbonate. An apparatus is shown for coating an electric conductor with the cellular polythene in which the conducting wire is led through the spindle of the screw of an extrusion machine extruding the polythene mix round the conductor, the coated wire then entering a heated chamber. The blowing agent is incorporated in the polythene on hot rolls or in an internal mixer in the cold. Elasticity may be imparted to the polythene by heating and working in air, oxidysing agents as benzoyl peroxide, pinene or turpentine may be added. According to the Provisional Specification elasticity is enhanced by natural rubber, butyl rubber or polyisobutylene and the blowing agent may be nitrogen or carbon-dioxide gas to the pressure of which the polythene is subjected. The blowing agent is expanded by heating in an oven, a mould or a press. Expanded polythene tape may be applied to a conductor. Specification 524,063 is referred to.ALSO:Cellular polythene is produced by extruding a mix of polythene and a blowing agent and then heating the mix to decompose the blowing agent, which may be sodium bicarbonate, diazoaminobenzene or ammonium carbonate. An apparatus is shown for coating an electric conductor with the cellular polythene in which the conducting wire is led through the spindle of the screw of an extrusion machine extruding the polythene mix round the conductor, the coated wire then entering a heated chamber. The blowing agent is incorporated in the polythene on hot rolls or in an internal mixer or in the cold. Elasticity may be imparted to the polythene by heating and working in air, oxidizing agents as benzoyl peroxide, pinene or turpentine may be added. According to the Provisional Specification elasticity is enhanced by natural rubber, butyl rubber or polyisobutylene and the blowing agent may be nitrogen or carbon-dioxide gas to the pressure of which the polythene is subjected. The blowing agent is expanded by heating in an oven, a mould or a press. Expanded polythene tape may be applied to a conductor. Specification 524,063 is referred to.
GB35719/46A 1946-12-02 1946-12-02 Improvements relating to cellular thermoplastic materials Expired GB629668A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL67205D NL67205C (en) 1946-12-02
FR957687D FR957687A (en) 1946-12-02
GB35719/46A GB629668A (en) 1946-12-02 1946-12-02 Improvements relating to cellular thermoplastic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35719/46A GB629668A (en) 1946-12-02 1946-12-02 Improvements relating to cellular thermoplastic materials

Publications (1)

Publication Number Publication Date
GB629668A true GB629668A (en) 1949-09-26

Family

ID=10380831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35719/46A Expired GB629668A (en) 1946-12-02 1946-12-02 Improvements relating to cellular thermoplastic materials

Country Status (3)

Country Link
FR (1) FR957687A (en)
GB (1) GB629668A (en)
NL (1) NL67205C (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006918B (en) * 1955-04-19 1957-04-25 Basf Ag Process for the production of electrical conductors insulated with foam-shaped plastics
US2835927A (en) * 1953-05-07 1958-05-27 Western Electric Co Methods of producing cellular plastics
US2885737A (en) * 1954-05-24 1959-05-12 Anaconda Wire & Cable Co Manufacture of high frequency cable
US2945828A (en) * 1957-02-20 1960-07-19 Western Electric Co Composite materials for producing cellular polyethylene articles
US3068532A (en) * 1958-12-09 1962-12-18 Union Carbide Corp Method of preparing insulated electrical conductors
US3162703A (en) * 1960-12-06 1964-12-22 Foster Grant Co Inc Injection molding of foam materials
US3300554A (en) * 1963-09-27 1967-01-24 Western Electric Co Method of making cellular articles
US3342913A (en) * 1963-11-29 1967-09-19 Phillips Petroleum Co Process and apparatus for the production of mouldings or extrusions having a cellular structure from thermoplastic synthetic materials
DE2545931A1 (en) * 1975-10-14 1977-04-21 Felten & Guilleaume Carlswerk Injecting foamed plastic insulation into coaxial cables - to obtain controlled expansion and form uniform cell structure, aided by lubricant addition
EP0748675A2 (en) * 1995-06-14 1996-12-18 Dow Corning Corporation Continuous foam profile containing a filamentary core and method for preparing same
CN107234792A (en) * 2017-07-28 2017-10-10 邓哲琪 Energy saving and environment friendly extrusion coating machine in the same direction

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1214868B (en) * 1951-06-11 1966-04-21 Polymer Corp Method and device for producing bubble-free rods, in particular from a high-melting polyamide
DE1073196B (en) * 1952-04-17 1960-01-14 The Dow Chemical Company, Midland, Mich. (V. St. A.) Process for the production of a cellular elongated product
DE1175423B (en) * 1954-11-18 1964-08-06 Collo Rheincollodium Koeln G M Method and device for continuously wrapping elongated objects with foams
DE1158699B (en) * 1955-03-02 1963-12-05 Basf Ag Process for the production of small-scale, transparent thermoplastics
DE1196852B (en) * 1959-05-16 1965-07-15 Siemens Ag Device for the production of foam insulation for electrical conductors using the extrusion process

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835927A (en) * 1953-05-07 1958-05-27 Western Electric Co Methods of producing cellular plastics
US2885737A (en) * 1954-05-24 1959-05-12 Anaconda Wire & Cable Co Manufacture of high frequency cable
DE1006918B (en) * 1955-04-19 1957-04-25 Basf Ag Process for the production of electrical conductors insulated with foam-shaped plastics
US2945828A (en) * 1957-02-20 1960-07-19 Western Electric Co Composite materials for producing cellular polyethylene articles
US3068532A (en) * 1958-12-09 1962-12-18 Union Carbide Corp Method of preparing insulated electrical conductors
US3162703A (en) * 1960-12-06 1964-12-22 Foster Grant Co Inc Injection molding of foam materials
US3300554A (en) * 1963-09-27 1967-01-24 Western Electric Co Method of making cellular articles
US3342913A (en) * 1963-11-29 1967-09-19 Phillips Petroleum Co Process and apparatus for the production of mouldings or extrusions having a cellular structure from thermoplastic synthetic materials
DE2545931A1 (en) * 1975-10-14 1977-04-21 Felten & Guilleaume Carlswerk Injecting foamed plastic insulation into coaxial cables - to obtain controlled expansion and form uniform cell structure, aided by lubricant addition
EP0748675A2 (en) * 1995-06-14 1996-12-18 Dow Corning Corporation Continuous foam profile containing a filamentary core and method for preparing same
EP0748675A3 (en) * 1995-06-14 1997-05-02 Dow Corning Continuous foam profile containing a filamentary core and method for preparing same
CN107234792A (en) * 2017-07-28 2017-10-10 邓哲琪 Energy saving and environment friendly extrusion coating machine in the same direction

Also Published As

Publication number Publication date
FR957687A (en) 1950-02-23
NL67205C (en) 1900-01-01

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