GB1449285A - Surgical face mask - Google Patents

Surgical face mask

Info

Publication number
GB1449285A
GB1449285A GB5853673A GB5853673A GB1449285A GB 1449285 A GB1449285 A GB 1449285A GB 5853673 A GB5853673 A GB 5853673A GB 5853673 A GB5853673 A GB 5853673A GB 1449285 A GB1449285 A GB 1449285A
Authority
GB
United Kingdom
Prior art keywords
fabric
filtration medium
mask
johnson
binder
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
GB5853673A
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.)
Johnson and Johnson KK
Johnson and Johnson
Original Assignee
Johnson and Johnson KK
Johnson and Johnson
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 Johnson and Johnson KK, Johnson and Johnson filed Critical Johnson and Johnson KK
Priority to GB5853673A priority Critical patent/GB1449285A/en
Publication of GB1449285A publication Critical patent/GB1449285A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/1115—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a horizontal pleated pocket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0627—Spun-bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0668—The layers being joined by heat or melt-bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0681—The layers being joined by gluing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1233—Fibre diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1291—Other parameters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

1449285 Surgical masks JOHNSON & JOHNSON 18 Dec 1973 58536/73 Heading A5T A face mask includes a body portion 10 with securing means 12, the body comprising a filtration medium of non woven fabric formed of thermoplastics filaments extending from edge to edge of the piece of fabric generally parallel to the surface and having a diameter of 14-20 microns, said fabric having a weight of 1.4-1.8 oz/sq. yd., a thickness of 0.01-0.02 ins, a void volume of about 85% and being substantially free of binder. The filtration medium (22) Fig. 4 (not shown) may have on each side a layer of a non-woven facing fabric (21, 23) of weight 200-400 grains/ sq. yd. which is bonded with a thermoplastics binder. The facing fabric and the filtration medium are preferably bonded together at points 14, constituting less than 1% of the total surface area of the mask, and the mask is formed by folding the material into pleats (17, 18, 19), Figs. 2 and 3 (not shown), a soft metal nose clip 11 and seam binding 13 being provided. The filtration medium may be made of poly(ethylene terephthalate) by spinning the filaments, applying an electrostatic charge to separate them, arranging them in parallel relationship, and self-bonding by pressure.
GB5853673A 1973-12-18 1973-12-18 Surgical face mask Expired GB1449285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5853673A GB1449285A (en) 1973-12-18 1973-12-18 Surgical face mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5853673A GB1449285A (en) 1973-12-18 1973-12-18 Surgical face mask

Publications (1)

Publication Number Publication Date
GB1449285A true GB1449285A (en) 1976-09-15

Family

ID=10481847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5853673A Expired GB1449285A (en) 1973-12-18 1973-12-18 Surgical face mask

Country Status (1)

Country Link
GB (1) GB1449285A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162546A1 (en) * 1984-03-27 1985-11-27 Minnesota Mining And Manufacturing Company Molded fibrous filtration products
GB2262891A (en) * 1991-12-05 1993-07-07 Genevieve * Marsh Teresa All in one face mask
US9821291B2 (en) 2011-06-23 2017-11-21 Cellresin Technologies, Llc Material such as film, fiber, woven and nonwoven fabric with adsorbancy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162546A1 (en) * 1984-03-27 1985-11-27 Minnesota Mining And Manufacturing Company Molded fibrous filtration products
GB2262891A (en) * 1991-12-05 1993-07-07 Genevieve * Marsh Teresa All in one face mask
US9821291B2 (en) 2011-06-23 2017-11-21 Cellresin Technologies, Llc Material such as film, fiber, woven and nonwoven fabric with adsorbancy
US10035128B2 (en) 2011-06-23 2018-07-31 Cellresin Technologies, Llc Material such as film, fiber, woven and nonwoven fabric with adsorbancy

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19931217