GB1126857A - A method of manufacturing foamed sheets of polyolefin composition - Google Patents

A method of manufacturing foamed sheets of polyolefin composition

Info

Publication number
GB1126857A
GB1126857A GB530767A GB530767A GB1126857A GB 1126857 A GB1126857 A GB 1126857A GB 530767 A GB530767 A GB 530767A GB 530767 A GB530767 A GB 530767A GB 1126857 A GB1126857 A GB 1126857A
Authority
GB
United Kingdom
Prior art keywords
sheet
belt
hot air
nozzles
polyolefin
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
GB530767A
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric 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
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Publication of GB1126857A publication Critical patent/GB1126857A/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
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • B29C44/5636—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching with the addition of heat
    • 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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Belt Conveyors (AREA)

Abstract

1,126,857. Heating device for foaming polyolefin sheets. FURUKAWA DENKI KOGYO K.K. 3 Feb., 1967 [5 Feb., 1966], No. 5307/67. Heading F4U. [Also in Divisions B5 and C3] Sheets of polyolefin composition comprising polyolefin, organic peroxide and foming agent are foamed by heating the sheet either by heat radiation from nichrome wires or infra-red ray lamps, or by natural or forced flow of hot air. Preferably, foaming is effected by heating both sides of the sheet at substantialy the same rate while it is supported on an endless belt conveyer 2 provided with a large number of fine holes. The surface of the belt conveyer should be smooth to ensure uniform expansion of the sheet thereon. Each hole in the belt is tapered so that the cross-sectional area increases gradually as the opening extends toward the upper surface of the belt thus facilitating separation of the foamed sheet from the belt at the end of the heat treatment. The belt 2 conveys the sheet 6 through a furnace enclosed by housing walls and provided with hot air circulating ducts 3, partitions 4, and slit nozzles 5 for blowing air. Thumbscrews 7 fasten the nozzles to the heating device. During the transit, hot air is delivered to the sheet directly, rapidly and at a substantially uniform rate to such a temperature e.g. 180-300‹ C., that the organic peroxide and the foaming agent are decomposed simultaneously. Hot air from the slit nozzles 5 is blown preferably at a velocity of 5-20 m/sec. so as to form opposing air currents 8. There is a larger clearance d 1 between the upper nozzles and the sheet than the corresponding clearance d 2 between the lower nozzle and the sheet. The air velocity at the lower nozzle may be greater than that at the upper nozzle to assist easy separation of the foamed sheet from the belt. Further the width of each slit nozzle may preferably be made narrower in the centre than at each end in order to heat the centre and edges of the sheet uniformly. The furnace can be divided into two or more zones whereby the temperature and hot air blowing rate can be varied. The endless conveyer belt may be made of metal screen having a range of 5-200 mesh per inch (Tyler Std.) or metal plate. Stainless steel, galvanized iron, aluminium, alloys such as brass, organic substances such as P.T.F.E. fibres, inorganic substances such as glass fibres, silicon oil, P.T.F.E. emulsion or powder particle of mica or talc are suitable materials for constructing the belt.
GB530767A 1966-02-05 1967-02-03 A method of manufacturing foamed sheets of polyolefin composition Expired GB1126857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP41006564A JPS5218232B1 (en) 1966-02-05 1966-02-05

Publications (1)

Publication Number Publication Date
GB1126857A true GB1126857A (en) 1968-09-11

Family

ID=11641813

Family Applications (1)

Application Number Title Priority Date Filing Date
GB530767A Expired GB1126857A (en) 1966-02-05 1967-02-03 A method of manufacturing foamed sheets of polyolefin composition

Country Status (4)

Country Link
JP (1) JPS5218232B1 (en)
AU (1) AU423404B2 (en)
DE (1) DE1694130C3 (en)
GB (1) GB1126857A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367185A (en) * 1980-02-25 1983-01-04 The Furukawa Electric Co., Ltd. Method of producing crosslinked polypropylene foam
US4424293A (en) 1980-02-25 1984-01-03 The Furukawa Electric Co., Ltd. Crosslinkable polypropylene composition
US4499210A (en) * 1982-10-13 1985-02-12 Union Carbide Corporation Process and composition for producing open-cell cross linked polyolefin foam
US4578231A (en) * 1983-03-28 1986-03-25 Bayer Aktiengesellschaft Process for the production of polyolefin foams
WO1986003759A1 (en) * 1984-12-21 1986-07-03 Union Carbide Corporation Olefin polymer foams
US4671910A (en) * 1984-08-16 1987-06-09 Dynamit Nobel Aktiengesellschaft Process for the production of closed-cell foam molded articles of crosslinked polyolefin
US4945127A (en) * 1987-12-28 1990-07-31 Tonen Sekiyukagaku Kabushiki Kaisha Polymer composition, its heat-resistant, shape memory formed product and method of producing same
DE4222724A1 (en) * 1992-07-10 1994-01-13 Pegulan Tarkett Ag PVC- and plasticiser-free foamed sealing and insulating materials - mfd. by spreading dry blend contg. thermoplastic, filler, blowing agent etc. on support melting, smoothing and foaming at elevated temp.
CN109876362A (en) * 2019-02-22 2019-06-14 滁州市超顺装备科技有限公司 A kind of processing method of crosslinked foaming gymnastics pad
WO2020094645A1 (en) 2018-11-06 2020-05-14 Borealis Ag Silane crosslinkable foamable polyolefin composition and foam
RU2786171C1 (en) * 2021-11-26 2022-12-19 Олег Андреевич Фридман Insert for the heat-insulating cavity of a building structure, method for production thereof, and method for producing the heat-insulating cavity of a building structure
WO2023096529A1 (en) * 2021-11-26 2023-06-01 Олег Андреевич ФРИДМАН Inlay for a heat insulating building cavity

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2507274A1 (en) * 1975-02-20 1976-09-09 Bayer Ag LAMINATE MADE OF POLYETHYLENE FOAM WITH ANISOTROPIC PORE STRUCTURE
DE2539701C2 (en) * 1975-09-06 1984-05-17 Bayer Ag, 5090 Leverkusen Device for the continuous production of endless foam webs
DE2543248C2 (en) * 1975-09-27 1983-11-24 Dynamit Nobel Ag, 5210 Troisdorf Process for the production of foam sheets from olefin polymers
JPS5499166A (en) * 1978-01-20 1979-08-04 Japan Styrene Paper Corp Production of polyolefinic foamed resin
JPS6028852B2 (en) * 1979-08-29 1985-07-06 古河電気工業株式会社 Composition for crosslinked polyolefin foam
AT367082B (en) * 1980-04-21 1982-05-25 Egger K Kunststoffwerk METHOD FOR PRODUCING FOAM BODIES
DE3132439C2 (en) * 1981-08-17 1984-05-24 Dynamit Nobel Ag, 5210 Troisdorf Molding compound for a cross-linked foam made from polyolefins and ethylene-propylene rubber and a method for producing the foam
DE3316058A1 (en) * 1983-05-03 1984-11-08 Fa. Carl Freudenberg, 6940 Weinheim Process for the preparation of crosslinked and foamed polyolefins
DE3507667A1 (en) * 1985-03-05 1987-08-27 Irbit Research & Consulting Ag Device for covering foam slabs
DE4430961A1 (en) * 1994-08-31 1996-03-07 Christoph Dr Ing Freist Process for producing an insulating element and an insulating element
CN1139127A (en) † 1995-02-08 1997-01-01 东丽株式会社 Polyolefin based crosslinked foam
EP1820818A1 (en) 2006-02-15 2007-08-22 Trocellen GmbH Process for manufacturing an open celled and cross-linked polyolefine foam
IT1398284B1 (en) * 2009-08-05 2013-02-22 Warmor Roofing S R L METHOD FOR THE REALIZATION OF A PANEL, IN PARTICULAR FOR THERMO-ACOUSTIC INSULATION, AND A VARIABLE, SELF-SUPPORTING DENSITY PANEL MADE WITH A CALLED METHOD
DE102011076163A1 (en) 2011-05-20 2012-11-22 Trocellen Gmbh Method for extrusion of web and matrix on basis of thermoplastic material and polyolefin, involves providing additive that is selected from group of cross-linking agent, blowing agent and reactive component by using wide slot tool

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367185A (en) * 1980-02-25 1983-01-04 The Furukawa Electric Co., Ltd. Method of producing crosslinked polypropylene foam
US4424293A (en) 1980-02-25 1984-01-03 The Furukawa Electric Co., Ltd. Crosslinkable polypropylene composition
US4499210A (en) * 1982-10-13 1985-02-12 Union Carbide Corporation Process and composition for producing open-cell cross linked polyolefin foam
US4578231A (en) * 1983-03-28 1986-03-25 Bayer Aktiengesellschaft Process for the production of polyolefin foams
US4671910A (en) * 1984-08-16 1987-06-09 Dynamit Nobel Aktiengesellschaft Process for the production of closed-cell foam molded articles of crosslinked polyolefin
WO1986003759A1 (en) * 1984-12-21 1986-07-03 Union Carbide Corporation Olefin polymer foams
US4945127A (en) * 1987-12-28 1990-07-31 Tonen Sekiyukagaku Kabushiki Kaisha Polymer composition, its heat-resistant, shape memory formed product and method of producing same
US5057252A (en) * 1987-12-28 1991-10-15 Tonen Sekiyukagaku Kabushiki Kaisha Method of producing heat-resistant and shape memory formed products
DE4222724A1 (en) * 1992-07-10 1994-01-13 Pegulan Tarkett Ag PVC- and plasticiser-free foamed sealing and insulating materials - mfd. by spreading dry blend contg. thermoplastic, filler, blowing agent etc. on support melting, smoothing and foaming at elevated temp.
WO2020094645A1 (en) 2018-11-06 2020-05-14 Borealis Ag Silane crosslinkable foamable polyolefin composition and foam
CN109876362A (en) * 2019-02-22 2019-06-14 滁州市超顺装备科技有限公司 A kind of processing method of crosslinked foaming gymnastics pad
RU2786171C1 (en) * 2021-11-26 2022-12-19 Олег Андреевич Фридман Insert for the heat-insulating cavity of a building structure, method for production thereof, and method for producing the heat-insulating cavity of a building structure
WO2023096529A1 (en) * 2021-11-26 2023-06-01 Олег Андреевич ФРИДМАН Inlay for a heat insulating building cavity

Also Published As

Publication number Publication date
DE1694130C3 (en) 1979-03-22
DE1694130A1 (en) 1970-10-08
JPS5218232B1 (en) 1977-05-20
DE1694130B2 (en) 1972-08-31
AU2344067A (en) 1969-01-09
AU423404B2 (en) 1972-04-19

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