CA2312130A1 - Molded respirator containing sorbent particles - Google Patents

Molded respirator containing sorbent particles Download PDF

Info

Publication number
CA2312130A1
CA2312130A1 CA002312130A CA2312130A CA2312130A1 CA 2312130 A1 CA2312130 A1 CA 2312130A1 CA 002312130 A CA002312130 A CA 002312130A CA 2312130 A CA2312130 A CA 2312130A CA 2312130 A1 CA2312130 A1 CA 2312130A1
Authority
CA
Canada
Prior art keywords
particle
containing layer
molded
sorbent particles
containing sorbent
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.)
Granted
Application number
CA002312130A
Other languages
French (fr)
Other versions
CA2312130C (en
Inventor
James E. Springett
Leonard W. Barrett
Roberta C. Harper
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.)
3M Co
Original Assignee
Minnesota Mining And Manufacturing Company
James E. Springett
Leonard W. Barrett
Roberta C. Harper
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 Minnesota Mining And Manufacturing Company, James E. Springett, Leonard W. Barrett, Roberta C. Harper filed Critical Minnesota Mining And Manufacturing Company
Publication of CA2312130A1 publication Critical patent/CA2312130A1/en
Application granted granted Critical
Publication of CA2312130C publication Critical patent/CA2312130C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • 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
    • 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
    • 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
    • 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
    • A62B18/02—Masks

Abstract

Molded respirators containing an air-permeable, sorbent-particle-containing layer between air-permeable particle-retaining layers.
The particle-containing layer is stretchable during shaping without tearing or significant loss of particles. At least some of the fibers in the particle-containing layer are sufficiently tacky after being formed by themselves into a particle-free web and cooled to room temperature so that the web will adhere to itself. The respirators can be molded from flat webs without the need to fabricate the particle-containing layer into a shaped preform.
CA002312130A 1997-12-01 1998-04-13 Molded respirator containing sorbent particles Expired - Fee Related CA2312130C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/982,119 1997-12-01
US08/982,119 US6102039A (en) 1997-12-01 1997-12-01 Molded respirator containing sorbent particles
PCT/US1998/007529 WO1999028542A1 (en) 1997-12-01 1998-04-13 Molded respirator containing sorbent particles

Publications (2)

Publication Number Publication Date
CA2312130A1 true CA2312130A1 (en) 1999-06-10
CA2312130C CA2312130C (en) 2007-01-09

Family

ID=25528859

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002312130A Expired - Fee Related CA2312130C (en) 1997-12-01 1998-04-13 Molded respirator containing sorbent particles

Country Status (11)

Country Link
US (2) US6102039A (en)
EP (1) EP1036229B1 (en)
JP (1) JP4195188B2 (en)
KR (1) KR100506304B1 (en)
CN (1) CN1096513C (en)
AU (1) AU7117898A (en)
BR (1) BR9815117B1 (en)
CA (1) CA2312130C (en)
DE (1) DE69806635T2 (en)
ES (1) ES2179486T3 (en)
WO (1) WO1999028542A1 (en)

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Also Published As

Publication number Publication date
CN1285012A (en) 2001-02-21
BR9815117A (en) 2000-10-10
CN1096513C (en) 2002-12-18
US6102039A (en) 2000-08-15
ES2179486T3 (en) 2003-01-16
CA2312130C (en) 2007-01-09
WO1999028542A1 (en) 1999-06-10
BR9815117B1 (en) 2008-11-18
JP4195188B2 (en) 2008-12-10
KR20010032629A (en) 2001-04-25
AU7117898A (en) 1999-06-16
JP2001525201A (en) 2001-12-11
US6234171B1 (en) 2001-05-22
KR100506304B1 (en) 2005-08-05
EP1036229A1 (en) 2000-09-20
EP1036229B1 (en) 2002-07-17
DE69806635T2 (en) 2005-10-13
DE69806635D1 (en) 2002-08-22

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