ZA872455B - Resilient shape-retaining fibrous filtration face mask - Google Patents

Resilient shape-retaining fibrous filtration face mask

Info

Publication number
ZA872455B
ZA872455B ZA872455A ZA872455A ZA872455B ZA 872455 B ZA872455 B ZA 872455B ZA 872455 A ZA872455 A ZA 872455A ZA 872455 A ZA872455 A ZA 872455A ZA 872455 B ZA872455 B ZA 872455B
Authority
ZA
South Africa
Prior art keywords
face mask
fibrous filtration
resilient shape
filtration face
retaining fibrous
Prior art date
Application number
ZA872455A
Other languages
English (en)
Inventor
James Franklin Dyrud
Franklin Dyrud James
Harvey Jean Berg
Jean Berg Harvey
Alice Carol Murray
Carol Murray Alice
Original Assignee
Minnesota Mining & Mfg
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25304189&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA872455(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of ZA872455B publication Critical patent/ZA872455B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • 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
    • A41D13/1138—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration
    • A41D13/1146—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration obtained by moulding
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
    • 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
    • B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0036—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Pulmonology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Nonwoven Fabrics (AREA)
  • Filtering Materials (AREA)
  • Laminated Bodies (AREA)
ZA872455A 1986-04-07 1987-04-03 Resilient shape-retaining fibrous filtration face mask ZA872455B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/848,757 US4807619A (en) 1986-04-07 1986-04-07 Resilient shape-retaining fibrous filtration face mask

Publications (1)

Publication Number Publication Date
ZA872455B true ZA872455B (en) 1988-11-30

Family

ID=25304189

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA872455A ZA872455B (en) 1986-04-07 1987-04-03 Resilient shape-retaining fibrous filtration face mask

Country Status (12)

Country Link
US (1) US4807619A (fr)
EP (1) EP0241221B2 (fr)
JP (1) JPH0736839B2 (fr)
KR (1) KR960004747B1 (fr)
AR (1) AR243087A1 (fr)
AU (1) AU593076B2 (fr)
BR (1) BR8701592A (fr)
CA (1) CA1293094C (fr)
DE (1) DE3770508D1 (fr)
ES (1) ES2022341T5 (fr)
MX (1) MX165394B (fr)
ZA (1) ZA872455B (fr)

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* Cited by examiner, † Cited by third party
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AU593076B2 (en) 1990-02-01
EP0241221A1 (fr) 1987-10-14
JPH0736839B2 (ja) 1995-04-26
KR870009734A (ko) 1987-11-30
KR960004747B1 (ko) 1996-04-13
AU7049187A (en) 1987-10-08
EP0241221B2 (fr) 1993-12-29
BR8701592A (pt) 1988-01-26
ES2022341B3 (es) 1991-12-01
MX165394B (es) 1992-11-10
EP0241221B1 (fr) 1991-06-05
ES2022341T5 (es) 1995-08-16
CA1293094C (fr) 1991-12-17
AR243087A1 (es) 1993-07-30
JPS62243568A (ja) 1987-10-24
US4807619A (en) 1989-02-28
DE3770508D1 (de) 1991-07-11

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