BR9914470A - Tecido pregueado estirável compósito unitário e seu processo de fabricação - Google Patents

Tecido pregueado estirável compósito unitário e seu processo de fabricação

Info

Publication number
BR9914470A
BR9914470A BR9914470-0A BR9914470A BR9914470A BR 9914470 A BR9914470 A BR 9914470A BR 9914470 A BR9914470 A BR 9914470A BR 9914470 A BR9914470 A BR 9914470A
Authority
BR
Brazil
Prior art keywords
manufacturing process
stretch
pleated
unitary fabric
fabric
Prior art date
Application number
BR9914470-0A
Other languages
English (en)
Other versions
BR9914470B1 (pt
Inventor
Kenneth Edward Martin
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Publication of BR9914470A publication Critical patent/BR9914470A/pt
Publication of BR9914470B1 publication Critical patent/BR9914470B1/pt

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M17/00—Producing multi-layer textile fabrics
    • D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives
    • 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
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/593—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives to layered webs
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0207—Elastomeric 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24446—Wrinkled, creased, crinkled or creped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24686—Pleats or otherwise parallel adjacent folds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601—Nonwoven fabric has an elastic quality
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601—Nonwoven fabric has an elastic quality
    • Y10T442/602—Nonwoven fabric comprises an elastic strand or fiber material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/603—Including strand or fiber material precoated with other than free metal or alloy
    • Y10T442/607—Strand or fiber material is synthetic polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/643—Including parallel strand or fiber material within the nonwoven fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/66—Additional nonwoven fabric is a spun-bonded fabric
    • Y10T442/663—Hydroentangled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/668—Separate nonwoven fabric layers comprise chemically different strand or fiber material

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Woven Fabrics (AREA)
  • Multicomponent Fibers (AREA)

Abstract

"TECIDO PREGUEADO ESTIRáVEL COMPóSITO UNITáRIO E SEU PROCESSO DE FABRICAçãO". A presente invenção se refere a um tecido compósito estirável, baseado em duas camadas externas não tecidas e em uma camada interna pré-estirada de fibras elastoméricas de pelo menos 400 decitex e de pelo menos oito fios/polegada, e ter uma aparência de superfície plana.
BRPI9914470-0A 1998-10-02 1999-09-21 tecido pregueado estirável compósito unitário e seu processo de fabricação. BR9914470B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16572598A 1998-10-02 1998-10-02
US29657599A 1999-04-22 1999-04-22
PCT/US1999/021913 WO2000020202A1 (en) 1998-10-02 1999-09-21 Uniform stretchable fabric with flat surface appearance

Publications (2)

Publication Number Publication Date
BR9914470A true BR9914470A (pt) 2001-10-16
BR9914470B1 BR9914470B1 (pt) 2009-05-05

Family

ID=26861658

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9914470-0A BR9914470B1 (pt) 1998-10-02 1999-09-21 tecido pregueado estirável compósito unitário e seu processo de fabricação.

Country Status (9)

Country Link
US (1) US6713415B2 (pt)
EP (1) EP1128952B1 (pt)
JP (1) JP4601173B2 (pt)
KR (1) KR100644986B1 (pt)
BR (1) BR9914470B1 (pt)
CA (1) CA2341666C (pt)
DE (1) DE69913195T2 (pt)
TW (1) TW469226B (pt)
WO (1) WO2000020202A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6491776B2 (en) 2001-04-23 2002-12-10 Bostik Findley, Inc. Dual adhesive application for laminating elastic webs
DE10319754A1 (de) * 2003-04-30 2004-12-02 Carl Freudenberg Kg Elastischer Verbundstoff, Verfahren zu dessen Herstellung und dessen Verwendung
ATE394218T1 (de) * 2004-06-18 2008-05-15 Textronics Inc Perforierte funktionale textilstrukturen
US7560671B2 (en) 2006-09-26 2009-07-14 Textronics, Inc. Textile laminate structures including conductive elements and method for making such structures
US9084836B2 (en) * 2008-08-06 2015-07-21 Invista North America S.A.R.L. Preparation of elastic composite structures useful for components of disposable hygiene products and articles of apparel
US20130004706A1 (en) * 2011-06-29 2013-01-03 Chen-Chiang Lee Cloth Structure Having Thermal and Stereoscopic Effects
US20210112897A1 (en) * 2012-12-28 2021-04-22 The Lycra Company Llc Garments including elastic composite fabric
CN109222294A (zh) * 2012-12-28 2019-01-18 英威达技术有限公司 包含弹性复合织物的服装
US20150202070A1 (en) * 2014-01-23 2015-07-23 Perfect Cross, Llc Adhesive appliance
EP3523121A1 (en) * 2016-10-04 2019-08-14 W. L. Gore & Associates, Inc. Stretchable laminates
US11518139B2 (en) 2016-10-04 2022-12-06 W. L. Gore & Associates, Inc. Stretchable laminates
EP3799566A1 (en) * 2018-02-23 2021-04-07 The LYCRA Company UK Limited Nonwoven or fabric elasticized with a multiplicity of fiber strands in a close proximity
KR20220156065A (ko) 2020-03-25 2022-11-24 더 라이크라 컴퍼니 유케이 리미티드 탄성화된 부직 라미네이트
CN113782261B (zh) * 2021-09-16 2022-09-30 中国科学院力学研究所 一种编织可拉伸导线及其制备方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575782A (en) * 1967-05-19 1971-04-20 Minnesota Mining & Mfg Elastic shirred web product
US4552795A (en) * 1983-12-27 1985-11-12 Minnesota Mining And Manufacturing Co. Inelastic, heat-elasticizable sheet material
US4720415A (en) 1985-07-30 1988-01-19 Kimberly-Clark Corporation Composite elastomeric material and process for making the same
GB2200594B (en) * 1987-01-16 1991-02-13 Riker Laboratories Inc High elastic modulus bandage
US4984584A (en) 1987-01-16 1991-01-15 Riker Laboratories, Inc. High elastic modulus bandage
US4761324B1 (en) * 1987-06-24 1991-05-07 Elastic,laminated,water-proof,moisture-permeable fabric
JPH02139228A (ja) * 1988-08-09 1990-05-29 Daifuku Seishi Kk 伸縮素材、伸縮素材の製造方法、伸縮素材を使用した製品及び同製品の製造方法。
US4977011A (en) * 1988-09-19 1990-12-11 Weyerhaeuser Company Disposable elastic structure
US5681645A (en) * 1990-03-30 1997-10-28 Kimberly-Clark Corporation Flat elastomeric nonwoven laminates
US5334437A (en) * 1992-09-23 1994-08-02 E. I. Du Pont De Nemours And Company Spunlaced fabric comprising a nonwoven Batt hydraulically entangled with a warp-like array of composite elastic yarns
JPH09224894A (ja) * 1996-02-26 1997-09-02 Dainippon Jochugiku Co Ltd 清掃用物品

Also Published As

Publication number Publication date
JP4601173B2 (ja) 2010-12-22
WO2000020202A1 (en) 2000-04-13
DE69913195D1 (de) 2004-01-08
BR9914470B1 (pt) 2009-05-05
DE69913195T2 (de) 2004-09-02
JP2002526668A (ja) 2002-08-20
CA2341666C (en) 2007-12-04
US20010029142A1 (en) 2001-10-11
EP1128952A1 (en) 2001-09-05
CA2341666A1 (en) 2000-04-13
US6713415B2 (en) 2004-03-30
KR100644986B1 (ko) 2006-11-13
KR20010090737A (ko) 2001-10-19
EP1128952B1 (en) 2003-11-26
TW469226B (en) 2001-12-21

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Legal Events

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B25A Requested transfer of rights approved

Owner name: INVISTA TECHNOLOGIES S.A.R.L. (US)

Free format text: TRANSFERIDO DE: E. I. DUPONT DE NEMOURS AND COMPANY

B25G Requested change of headquarter approved

Owner name: INVISTA TECHNOLOGIES S.A.R.L. (CH)

Free format text: SEDE ALTERADA CONFORME SOLICITADO NA PETICAO NO 018050042910/SP DE 21/10/2005.

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 21/09/1999, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 21.09.2019