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GB1368779A - Microwave furnaces for the treatment of sheet-shaped or plate- shaped workpieces made of a material capable of absorbing microwaves - Google Patents

Microwave furnaces for the treatment of sheet-shaped or plate- shaped workpieces made of a material capable of absorbing microwaves

Info

Publication number
GB1368779A
GB1368779A GB6012971A GB6012971A GB1368779A GB 1368779 A GB1368779 A GB 1368779A GB 6012971 A GB6012971 A GB 6012971A GB 6012971 A GB6012971 A GB 6012971A GB 1368779 A GB1368779 A GB 1368779A
Authority
GB
United Kingdom
Prior art keywords
plate
waveguide
adjustable
shaped
slot
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
GB6012971A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1368779A publication Critical patent/GB1368779A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/788—Arrangements for continuous movement of material wherein an elongated material is moved by applying a mechanical tension to it

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

1368779 Microwave heating apparatus J H A SOULIER 23 Dec 1971 [31 Dec 1970] 60129/71 Heading H5H A microwave furnace, for treating sheet materials such as thermoplastic and thermosetting rubbers and resins, comprises a waveguide 1 having a slot 9 in its upper wall of a length corresponding to the width of the sheet 10 conveyed transversely with respect thereto, a metal plate 14 of the same width being placed facing the slot with its edge 14a sloping towards the antenna 2 of the magnetron 3 feeding microwave energy to the waveguide 1. Plate 14 is engaged in an aperture 15 opposite slot 9 and is adjustable in position by one or more screws 16. Plate 14 may comprise several smaller plates 18, 18a ... 18n, Fig. 3 (not shown), of successively decreasing heights, or may have a slope 14b, Fig. 6 (not shown), of exponential shape. The invention gives uniform absorption of microwave energy across the width of sheets 10, which are fed by rollers 11 through a passage defined by the slotted upper wall of the waveguide and a protective metal cover 13. A similar cover 17 is fixed over aperture 15. The adjustable plate 14 may be replaced by a metal part 20 of U-shaped cross-section containing a plate 21 of polytetrafluoroethylene, the parts 20, 21, being separately adjustable by elements 22, 23. Waveguide 1 has an adjustable absorbing load 6, and rings 5 of PTFE providing impedance matching elements.
GB6012971A 1970-12-31 1971-12-23 Microwave furnaces for the treatment of sheet-shaped or plate- shaped workpieces made of a material capable of absorbing microwaves Expired GB1368779A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7047567A FR2120402A5 (en) 1970-12-31 1970-12-31

Publications (1)

Publication Number Publication Date
GB1368779A true GB1368779A (en) 1974-10-02

Family

ID=9066700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6012971A Expired GB1368779A (en) 1970-12-31 1971-12-23 Microwave furnaces for the treatment of sheet-shaped or plate- shaped workpieces made of a material capable of absorbing microwaves

Country Status (7)

Country Link
US (1) US3784777A (en)
JP (1) JPS5035256B1 (en)
CA (1) CA933600A (en)
DD (1) DD97117A1 (en)
DE (1) DE2162851A1 (en)
FR (1) FR2120402A5 (en)
GB (1) GB1368779A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2265187B1 (en) * 1974-03-22 1979-09-28 Cgr Mev
FR2362551A1 (en) * 1976-08-19 1978-03-17 Saint Gobain RESONANT MULTIMODAL CAVITY FOR HYPERFREQUENCY HEATING
DE2642335C2 (en) * 1976-09-21 1978-12-21 Ingenieurbuero Hermann Purfuerst Kg, 3004 Isernhagen Device for continuous dielectric heating by means of microwave energy
US4259561A (en) * 1977-05-06 1981-03-31 Agence Nationale De Valorisation De La Recherche (Anvar) Microwave applicator
SE419494B (en) * 1979-12-21 1981-08-03 Husqvarna Ab MICROWAG TYPE FLOW HEATER CONTAINING A CYLINDRIC MICROWAG APPLICATOR
DE3033012A1 (en) * 1980-09-02 1982-04-01 Paul Troester Maschinenfabrik, 3000 Hannover DEVICE FOR DRY CROSSLINKING STRINGS OF ELASTOMERS
US4689459A (en) * 1985-09-09 1987-08-25 Gerling John E Variable Q microwave applicator and method
US4711983A (en) * 1986-07-07 1987-12-08 Gerling John E Frequency stabilized microwave power system and method
FR2602719A1 (en) * 1986-07-28 1988-02-19 Ecamo Sa MICROWAVE DEVICE FOR THERMOGRAVING POWDER FUSION FOR RELIEF PRINTING
JP2888608B2 (en) * 1990-06-01 1999-05-10 義明 齊藤 Electromagnetic wave heating device
US6054696A (en) * 1997-01-06 2000-04-25 International Business Machines Corporation Feedback system to automatically couple microwave energy into an applicator
US6121595A (en) * 1997-01-06 2000-09-19 International Business Machines Corporation Applicator to provide uniform electric and magnetic fields over a large area and for continuous processing
US6072167A (en) * 1997-01-06 2000-06-06 International Business Machines Corporation Enhanced uniformity in a length independent microwave applicator
US5279788A (en) * 1991-01-24 1994-01-18 Eisai Co., Ltd. Sterilizer for sealed container utilizing microwave
US6259077B1 (en) * 1999-07-12 2001-07-10 Industrial Microwave Systems, Inc. Method and apparatus for electromagnetic exposure of planar or other materials
US6965099B1 (en) * 2000-08-28 2005-11-15 Georgia Tech Research Corporation Geometry for web microwave heating or drying to a desired profile in a waveguide
US7470876B2 (en) * 2005-12-14 2008-12-30 Industrial Microwave Systems, L.L.C. Waveguide exposure chamber for heating and drying material
JP4950340B2 (en) * 2007-11-29 2012-06-13 ダウ グローバル テクノロジーズ エルエルシー Method for controlling and optimizing microwave heating of plastic sheets
JP2011150911A (en) * 2010-01-22 2011-08-04 Konica Minolta Holdings Inc Microwave heating device
JP5918441B2 (en) * 2012-05-14 2016-05-18 コリア エレクトロテクノロジー リサーチ インスティテュートＫｏｒｅａ Ｅｌｅｃｔｒｏｔｅｃｈｎｏｌｏｇｙ Ｒｅｓｅａｒｃｈ Ｉｎｓｔｉｔｕｔｅ Microwave heating device for uniform heating of an object to be heated based on conditions near the cutoff value
CA3211525A1 (en) * 2021-02-22 2022-08-25 Off-World, Inc. Articulated waveguide

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869085A (en) * 1954-01-19 1959-01-13 Raytheon Mfg Co Selective absorbers
US3218583A (en) * 1963-08-30 1965-11-16 Textron Inc High frequency attenuator with constant phase shift
US3457385A (en) * 1966-07-07 1969-07-22 Canadian Patents Dev Apparatus for dielectric heating
US3555232A (en) * 1968-10-21 1971-01-12 Canadian Patents Dev Waveguides

Also Published As

Publication number Publication date
US3784777A (en) 1974-01-08
FR2120402A5 (en) 1972-08-18
CA933600A (en) 1973-09-11
DE2162851A1 (en) 1972-07-20
DD97117A1 (en) 1973-04-12
JPS5035256B1 (en) 1975-11-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees