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GB1271274A - Filtering element - Google Patents

Filtering element

Info

Publication number
GB1271274A
GB1271274A GB1561569A GB1561569A GB1271274A GB 1271274 A GB1271274 A GB 1271274A GB 1561569 A GB1561569 A GB 1561569A GB 1561569 A GB1561569 A GB 1561569A GB 1271274 A GB1271274 A GB 1271274A
Authority
GB
United Kingdom
Prior art keywords
rod
foamed
polyamide
filtering element
polycaprolactam
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
GB1561569A
Inventor
Pushpkumar Dewanmal Changani
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.)
Monsanto Chemicals Ltd
Original Assignee
Monsanto Chemicals 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 Monsanto Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Priority to GB1561569A priority Critical patent/GB1271274A/en
Priority to ES1970183796U priority patent/ES183796Y/en
Priority to JP2362370A priority patent/JPS509880B1/ja
Priority to FR7010311A priority patent/FR2039851A5/fr
Priority to BE747829D priority patent/BE747829A/en
Priority to DE19702013914 priority patent/DE2013914A1/en
Priority to BR21771870A priority patent/BR7017718D0/en
Priority to CH451670A priority patent/CH518069A/en
Priority to IT4948070A priority patent/IT968022B/en
Publication of GB1271274A publication Critical patent/GB1271274A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A24D3/0237—Filter rod forming processes by extrusion

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

1,271,274. Foamed polyamide filters. MONSANTO CHEMICALS Ltd. 26 Feb., 1970 [25 March, 1969], No. 15615/69. Heading B5A. [Also in Divisions A2 and C3] A filtering element, e.g. for smoke, comprises a foamed synthetic polyamide, e.g. polycaprolactam (nylon 6), having at least 50% of the cells with an open-cell structure and the element is made by extruding a rod of the foamed polyamide, the rod having a transverse cross-section corresponding to that desired in the final element, e.g. circular. The rod may be cut into pieces and may be used packed together in parallel arrangement. The rod may have a skin.
GB1561569A 1969-03-25 1969-03-25 Filtering element Expired GB1271274A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB1561569A GB1271274A (en) 1969-03-25 1969-03-25 Filtering element
ES1970183796U ES183796Y (en) 1969-03-25 1970-03-20 PERFECTED FILTER ELEMENTS.
JP2362370A JPS509880B1 (en) 1969-03-25 1970-03-23
FR7010311A FR2039851A5 (en) 1969-03-25 1970-03-23
BE747829D BE747829A (en) 1969-03-25 1970-03-23 FILTER ELEMENTS
DE19702013914 DE2013914A1 (en) 1969-03-25 1970-03-23 Filter element
BR21771870A BR7017718D0 (en) 1969-03-25 1970-03-24 PROCESS FOR THE PRODUCTION OF SMOKE FILTERING ELEMENT
CH451670A CH518069A (en) 1969-03-25 1970-03-24 Process for producing a filter element, the smoke filter element thus obtained and its use
IT4948070A IT968022B (en) 1969-03-25 1970-03-24 PROCEDURE FOR THE PRODUCTION OF SMOKE FILTRATION ELEMENTS AND RELATED PRODUCTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1561569A GB1271274A (en) 1969-03-25 1969-03-25 Filtering element

Publications (1)

Publication Number Publication Date
GB1271274A true GB1271274A (en) 1972-04-19

Family

ID=10062335

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1561569A Expired GB1271274A (en) 1969-03-25 1969-03-25 Filtering element

Country Status (9)

Country Link
JP (1) JPS509880B1 (en)
BE (1) BE747829A (en)
BR (1) BR7017718D0 (en)
CH (1) CH518069A (en)
DE (1) DE2013914A1 (en)
ES (1) ES183796Y (en)
FR (1) FR2039851A5 (en)
GB (1) GB1271274A (en)
IT (1) IT968022B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939237A (en) * 1971-11-19 1976-02-17 Asahi Dow, Ltd. Method of making a fluid transmitting porous tube or sheet
US4054550A (en) * 1974-04-11 1977-10-18 Monsanto Limited Process for producing cigarette filters
US4180536A (en) 1978-03-13 1979-12-25 Celanese Corporation Process for extruding plasticized open cell foamed cellulose acetate filters
US4282890A (en) * 1978-03-13 1981-08-11 Celanese Corporation Open cell structure foamed cellulose acetate filters
WO2003039277A1 (en) 2001-11-05 2003-05-15 Hauni Maschinenbau Ag Filter segments or filter for cigarettes and method for the production thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939237A (en) * 1971-11-19 1976-02-17 Asahi Dow, Ltd. Method of making a fluid transmitting porous tube or sheet
US4054550A (en) * 1974-04-11 1977-10-18 Monsanto Limited Process for producing cigarette filters
US4180536A (en) 1978-03-13 1979-12-25 Celanese Corporation Process for extruding plasticized open cell foamed cellulose acetate filters
US4282890A (en) * 1978-03-13 1981-08-11 Celanese Corporation Open cell structure foamed cellulose acetate filters
WO2003039277A1 (en) 2001-11-05 2003-05-15 Hauni Maschinenbau Ag Filter segments or filter for cigarettes and method for the production thereof

Also Published As

Publication number Publication date
BE747829A (en) 1970-09-23
IT968022B (en) 1974-03-20
BR7017718D0 (en) 1973-02-01
ES183796Y (en) 1974-05-16
JPS509880B1 (en) 1975-04-16
FR2039851A5 (en) 1971-01-15
CH518069A (en) 1972-01-31
DE2013914A1 (en) 1970-12-03
ES183796U (en) 1973-08-01

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