GB1515976A - Stabilization of tows of filamentary material - Google Patents

Stabilization of tows of filamentary material

Info

Publication number
GB1515976A
GB1515976A GB1945676A GB1945676A GB1515976A GB 1515976 A GB1515976 A GB 1515976A GB 1945676 A GB1945676 A GB 1945676A GB 1945676 A GB1945676 A GB 1945676A GB 1515976 A GB1515976 A GB 1515976A
Authority
GB
United Kingdom
Prior art keywords
tow
gas
cavities
electric field
pen core
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
GB1945676A
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.)
Baumgartner Papiers SA
Original Assignee
Baumgartner Papiers SA
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 claimed from CH704275A external-priority patent/CH590019A5/en
Priority claimed from CH936075A external-priority patent/CH594372A5/en
Application filed by Baumgartner Papiers SA filed Critical Baumgartner Papiers SA
Publication of GB1515976A publication Critical patent/GB1515976A/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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A24D3/0233—Filter rod forming processes by means of a garniture

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Inorganic Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Filtering Materials (AREA)

Abstract

1515976 Reservoir pens BAUMGARTNER PAPIERS SA 12 May 1976 [30 May 1975 17 July 1975] 19456/76 Addition to 1478719 19 Heading A4K [Also in Divisions A2, D1 and H5] To form a fibrous pen core a tow of filamentary dielectric material is bonded by passing the tow through at least one resonant cavity in an electric field having a frequency between 3 x 10<SP>8</SP> and 3 x 10<SP>11</SP> Hz and a hot gas is injected into contact with the tow in the resonant cavity or cavities. The outside of the tow is heated by the gas and the inside by dielectric heating. Preferably the tow is of cellulose acetate filaments impregnated with triacetin as a heat activatable binder (plasticizer), and the gas e.g. water, methanol, ethanol or propanol has a higher dielectric constant than that of the filaments and binder. Alternatively air may be used as the gas. The bonded rod may be used as a cigarette filter, no paper wrapping being required, or a pen core. The Micro-wave heating apparatus is modified from that disclosed in Specification 1478719 in that each cavity has an orifice for injecting the gas or mixture of gases under pressure, the tube for guiding the tow through the cavities is either perforated or replaced by tube segments between the adjoining cavities and the belt which wraps around and conveys the tow is woven so as to be permeable to the gas. The gas is pre-heated before entering the cavities and if of higher dielectric constant than the tow it will absorb heat from the electric field and transfer it to the tow.
GB1945676A 1975-05-30 1976-05-12 Stabilization of tows of filamentary material Expired GB1515976A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH704275A CH590019A5 (en) 1975-05-30 1975-05-30 Dielectric heating of fibre bundles - in resonance chamber through which a hot gas is passed
CH936075A CH594372A5 (en) 1975-07-17 1975-07-17 Dielectric heating of fibre bundles

Publications (1)

Publication Number Publication Date
GB1515976A true GB1515976A (en) 1978-06-28

Family

ID=25700635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1945676A Expired GB1515976A (en) 1975-05-30 1976-05-12 Stabilization of tows of filamentary material

Country Status (4)

Country Link
DE (1) DE2623110A1 (en)
ES (1) ES448295A2 (en)
GB (1) GB1515976A (en)
IT (1) IT1058745B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449026A (en) * 1978-05-08 1984-05-15 Tokyo Shibaura Denki Kabushiki Kaisha High frequency and steam heating method and apparatus
US4454404A (en) * 1978-05-10 1984-06-12 Tokyo Shibaura Denki Kabushiki Kaisha High frequency heating apparatus with selectable steam generating means
GB2265296A (en) * 1992-03-25 1993-09-29 Koerber Ag Method of and machine for making filters for tobacco smoke
CN108135255A (en) * 2015-10-23 2018-06-08 虹霓机械制造有限公司 The bow made of the conductive plastics of energy

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU531418B2 (en) * 1978-09-11 1983-08-25 Philip Morris Products Inc. Cigarette filters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449026A (en) * 1978-05-08 1984-05-15 Tokyo Shibaura Denki Kabushiki Kaisha High frequency and steam heating method and apparatus
US4454404A (en) * 1978-05-10 1984-06-12 Tokyo Shibaura Denki Kabushiki Kaisha High frequency heating apparatus with selectable steam generating means
GB2265296A (en) * 1992-03-25 1993-09-29 Koerber Ag Method of and machine for making filters for tobacco smoke
CN108135255A (en) * 2015-10-23 2018-06-08 虹霓机械制造有限公司 The bow made of the conductive plastics of energy

Also Published As

Publication number Publication date
IT1058745B (en) 1982-05-10
ES448295A2 (en) 1978-02-16
DE2623110A1 (en) 1976-12-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee