MX391987B - Estructuras fibrosas perforadas y métodos para fabricarlas. - Google Patents

Estructuras fibrosas perforadas y métodos para fabricarlas.

Info

Publication number
MX391987B
MX391987B MX2017004581A MX2017004581A MX391987B MX 391987 B MX391987 B MX 391987B MX 2017004581 A MX2017004581 A MX 2017004581A MX 2017004581 A MX2017004581 A MX 2017004581A MX 391987 B MX391987 B MX 391987B
Authority
MX
Mexico
Prior art keywords
methods
fibrous structures
manufacturing
fibrous
perforated fibrous
Prior art date
Application number
MX2017004581A
Other languages
English (en)
Other versions
MX2017004581A (es
Inventor
Alyssandrea Hope Hamad-Ebrahimpour
Andreas Josef Dreher
David Charles Oertel
Janine Anne Flood
Michael Sean Pratt
Min Mao
Paul Thomas Weisman
Paula A Chmielewski
Tom Edward Dufresne
Original Assignee
Procter & Gamble
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=54427834&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX391987(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Procter & Gamble filed Critical Procter & Gamble
Publication of MX2017004581A publication Critical patent/MX2017004581A/es
Publication of MX391987B publication Critical patent/MX391987B/es

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0241Containing particulates characterized by their shape and/or structure
    • A61K8/027Fibers; Fibrils
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/01Deodorant compositions
    • A61L9/012Deodorant compositions characterised by being in a special form, e.g. gels, emulsions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q11/00Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11BPRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00Essential oils; Perfumes
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00General methods for the manufacture of artificial filaments or the like
    • D01F1/02Addition of substances to the spinning solution or to the melt
    • D01F1/10Other agents for modifying properties
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/42Non-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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H13/00Other non-woven fabrics

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Epidemiology (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dermatology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dispersion Chemistry (AREA)
  • Birds (AREA)
  • Nonwoven Fabrics (AREA)
  • Filtering Materials (AREA)
  • Cosmetics (AREA)
  • Artificial Filaments (AREA)
  • Knitting Of Fabric (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Se describen estructuras fibrosas perforadas y, más particularmente, estructuras fibrosas perforadas que contienen uno o más elementos fibrosos, por ejemplo, filamentos, que contienen uno o más materiales formadores de elementos fibrosos y uno o más agentes activos que pueden liberarse del elemento fibrosos cuando se exponen a las condiciones de uso previsto, y métodos para fabricarlas.
MX2017004581A 2014-10-10 2015-10-05 Estructuras fibrosas perforadas y métodos para fabricarlas. MX391987B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462062186P 2014-10-10 2014-10-10
PCT/US2015/053911 WO2016057353A1 (en) 2014-10-10 2015-10-05 Apertured fibrous structures and methods for making same

Publications (2)

Publication Number Publication Date
MX2017004581A MX2017004581A (es) 2017-06-27
MX391987B true MX391987B (es) 2025-03-21

Family

ID=54427834

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2017004581A MX391987B (es) 2014-10-10 2015-10-05 Estructuras fibrosas perforadas y métodos para fabricarlas.

Country Status (14)

Country Link
US (1) US10792229B2 (es)
EP (1) EP3204539B1 (es)
JP (1) JP2017531103A (es)
KR (1) KR20170048533A (es)
CN (1) CN107002327A (es)
BR (1) BR112017007305A2 (es)
CA (1) CA2961579C (es)
DE (1) DE112015004624T5 (es)
ES (1) ES2844595T3 (es)
FR (1) FR3027035B1 (es)
GB (2) GB2569707B (es)
MX (1) MX391987B (es)
RU (1) RU2658841C1 (es)
WO (1) WO2016057353A1 (es)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2588654B1 (en) 2010-07-02 2019-08-07 The Procter and Gamble Company Nonwoven web comprising one or more active agents
EP2588655B1 (en) 2010-07-02 2017-11-15 The Procter and Gamble Company Method for delivering an active agent
US20180163325A1 (en) 2016-12-09 2018-06-14 Robert Wayne Glenn, Jr. Dissolvable fibrous web structure article comprising active agents
CN103025929B (zh) 2010-07-02 2015-11-25 宝洁公司 包含活性剂的长丝、非织造纤维网和制备它们的方法
RU2642781C2 (ru) 2013-09-06 2018-01-26 Дзе Проктер Энд Гэмбл Компани Капсулы, содержащие водорастворимые волокнистые материалы стенок, и способы их изготовления
CN114796017A (zh) 2014-04-22 2022-07-29 宝洁公司 可溶性固体结构体形式的组合物
WO2017219238A1 (en) * 2016-06-21 2017-12-28 The Procter & Gamble Company Aesthetic particles
EP3472296A1 (en) * 2016-06-21 2019-04-24 The Procter and Gamble Company Aesthetic particles
US11697905B2 (en) * 2017-01-27 2023-07-11 The Procter & Gamble Company Active agent-containing articles that exhibit consumer acceptable article in-use properties
WO2018140472A1 (en) * 2017-01-27 2018-08-02 The Procter & Gamble Company Active agent-containing articles that exhibit consumer acceptable article in-use properties
CN110191700A (zh) 2017-01-27 2019-08-30 宝洁公司 可溶性固体结构形式的组合物
US11697904B2 (en) 2017-01-27 2023-07-11 The Procter & Gamble Company Active agent-containing articles that exhibit consumer acceptable article in-use properties
US11697906B2 (en) 2017-01-27 2023-07-11 The Procter & Gamble Company Active agent-containing articles and product-shipping assemblies for containing the same
EP3573722B1 (en) 2017-01-27 2022-02-23 The Procter & Gamble Company Compositions in the form of dissolvable solid structures comprising effervescent agglomerated particles
US10287366B2 (en) 2017-02-15 2019-05-14 Cp Kelco Aps Methods of producing activated pectin-containing biomass compositions
EP3624765A1 (en) * 2017-05-16 2020-03-25 The Procter and Gamble Company Conditioning hair care compositions in the form of dissolvable solid structures
US10857756B2 (en) 2018-01-26 2020-12-08 The Procter & Gamble Company Process of making a multi-ply fibrous water soluble product
US10683618B2 (en) 2018-01-26 2020-06-16 The Procter & Gamble Company Process of making a multi-ply fibrous water soluble product
US20190233970A1 (en) * 2018-01-26 2019-08-01 The Procter & Gamble Company Process for Making an Article of Manufacture
CN108589040B (zh) * 2018-04-26 2019-12-06 海斯摩尔生物科技有限公司 一种高吸水性壳聚糖面膜基布的制备方法
US11911492B2 (en) 2018-05-14 2024-02-27 The Procter & Gamble Company Oral care compositions comprising metal ions
EP3793507A1 (en) * 2018-05-14 2021-03-24 The Procter & Gamble Company Oral care compositions comprising fluoride ions
JP1639110S (es) 2018-07-16 2019-08-13
US11666514B2 (en) 2018-09-21 2023-06-06 The Procter & Gamble Company Fibrous structures containing polymer matrix particles with perfume ingredients
US20200190433A1 (en) * 2018-12-14 2020-06-18 The Procter & Gamble Company Foaming Fibrous Structures Comprising Particles and Methods for Making Same
EP3712237A1 (en) 2019-03-19 2020-09-23 The Procter & Gamble Company Fibrous water-soluble unit dose articles comprising water-soluble fibrous structures
US12031254B2 (en) 2019-03-19 2024-07-09 The Procter & Gamble Company Process of reducing malodors on fabrics
US20200388374A1 (en) 2019-06-10 2020-12-10 The Procter & Gamble Company Method for Generating User Feedback Information From a Product Use Event and User Profile Data to Enhance Product Use Results
US12251460B2 (en) 2019-06-13 2025-03-18 The Procter And Gamble Company Kits comprising unit-dose oral care compositions
MX2021014995A (es) * 2019-06-13 2022-01-24 Procter & Gamble Proceso para elaborar una estructura fibrosa.
CN114206307B (zh) 2019-06-28 2024-08-23 宝洁公司 包含阴离子表面活性剂的可溶性固体纤维制品
MX2021015391A (es) 2019-07-03 2022-01-24 Procter & Gamble Estructuras fibrosas que contienen surfactantes cationicos y acidos solubles.
USD939359S1 (en) 2019-10-01 2021-12-28 The Procter And Gamble Plaza Packaging for a single dose personal care product
US11597191B2 (en) 2019-10-14 2023-03-07 The Procter & Gamble Company Biodegradable and/or home compostable sachet containing a solid article
EP4061320B1 (en) 2019-11-20 2024-07-03 The Procter & Gamble Company Porous dissolvable solid structure
CN114929182B (zh) 2019-12-01 2024-05-28 宝洁公司 具有含有苯甲酸钠和二醇和/或甘油酯的防腐体系的毛发调理剂组合物
USD941051S1 (en) 2020-03-20 2022-01-18 The Procter And Gamble Company Shower hanger
USD962050S1 (en) 2020-03-20 2022-08-30 The Procter And Gamble Company Primary package for a solid, single dose beauty care composition
CN111420464B (zh) * 2020-04-01 2021-07-27 中国科学院过程工程研究所 一种纳米碳材料复合滤材的制备装置及方法
USD965440S1 (en) 2020-06-29 2022-10-04 The Procter And Gamble Company Package
CN115867357A (zh) 2020-07-31 2023-03-28 宝洁公司 用于毛发护理的含有球粒的水溶性纤维小袋
CN116472021A (zh) 2020-08-11 2023-07-21 宝洁公司 含有芸苔油醇缬氨酸酯乙磺酸盐的清洁冲洗毛发调理剂组合物
EP4196233A1 (en) 2020-08-11 2023-06-21 The Procter & Gamble Company Moisturizing hair conditioner compositions containing brassicyl valinate esylate
US11633336B2 (en) 2020-08-11 2023-04-25 The Procter & Gamble Company Low viscosity hair conditioner compositions containing brassicyl valinate esylate
CN112526534B (zh) * 2020-11-03 2024-03-08 上海炬佑智能科技有限公司 ToF传感装置及其距离检测方法
CN116568266A (zh) 2020-12-01 2023-08-08 宝洁公司 含有溶解的去头皮屑活性物质的含水毛发调理剂组合物
USD1045064S1 (en) 2020-12-17 2024-10-01 The Procter & Gamble Company Single-dose dissolvable personal care unit
WO2022251838A1 (en) 2021-05-28 2022-12-01 The Procter & Gamble Company Natural polymer-based fibrous elements comprising a surfactant and methods for making same
EP4395730A1 (en) 2021-08-30 2024-07-10 The Procter & Gamble Company Dissolvable solid structure comprising first and second polymeric structurants
EP4447893A1 (en) 2021-12-17 2024-10-23 The Procter & Gamble Company Dissolvable solid fibrous shampoo articles containing salts
EP4489719A1 (en) 2022-03-10 2025-01-15 The Procter & Gamble Company Dissolvable solid structure having first and second layers
JP2025129554A (ja) 2024-02-26 2025-09-05 セイコーエプソン株式会社 繊維処理方法

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949127A (en) 1973-05-14 1976-04-06 Kimberly-Clark Corporation Apertured nonwoven webs
US4637859A (en) * 1983-08-23 1987-01-20 The Procter & Gamble Company Tissue paper
US4588630A (en) * 1984-06-13 1986-05-13 Chicopee Apertured fusible fabrics
US4741941A (en) * 1985-11-04 1988-05-03 Kimberly-Clark Corporation Nonwoven web with projections
JP3640667B2 (ja) * 1992-02-18 2005-04-20 マクニール−ピーピーシー・インコーポレイテッド 織物様有孔可塑性フィルム
US5628097A (en) 1995-09-29 1997-05-13 The Procter & Gamble Company Method for selectively aperturing a nonwoven web
JP3474981B2 (ja) * 1995-10-11 2003-12-08 花王株式会社 浴用剤
JP3366849B2 (ja) * 1997-12-26 2003-01-14 ユニ・チャーム株式会社 開孔不織布の製造方法
US5873868A (en) 1998-06-05 1999-02-23 The Procter & Gamble Company Absorbent article having a topsheet that includes selectively openable and closable openings
DE19846857C1 (de) * 1998-10-12 2000-03-02 Freudenberg Carl Fa Perforierter Vliesstoff und Verfahren zu dessen Herstellung
US6830800B2 (en) 1999-12-21 2004-12-14 The Procter & Gamble Company Elastic laminate web
US6863960B2 (en) 1999-12-21 2005-03-08 The Procter & Gamble Company User-activatible substance delivery system
US20030203196A1 (en) * 2000-11-27 2003-10-30 Trokhan Paul Dennis Flexible structure comprising starch filaments
US7192896B2 (en) * 2001-11-15 2007-03-20 3M Innovative Properties Company Disposable cleaning product
US7022656B2 (en) 2003-03-19 2006-04-04 Monosol, Llc. Water-soluble copolymer film packet
US8241543B2 (en) 2003-08-07 2012-08-14 The Procter & Gamble Company Method and apparatus for making an apertured web
US6955850B1 (en) * 2004-04-29 2005-10-18 The Procter & Gamble Company Polymeric structures and method for making same
DE102008063229A1 (de) * 2008-12-19 2010-07-01 Dehn, Michael C. Filzmaterial mit Sperrfunktion und Bauteil aus Filz
US20130017421A1 (en) 2010-04-02 2013-01-17 Boston-Power, Inc. Battery Pack Safety Techniques
CN103025929B (zh) * 2010-07-02 2015-11-25 宝洁公司 包含活性剂的长丝、非织造纤维网和制备它们的方法
EP2588655B1 (en) * 2010-07-02 2017-11-15 The Procter and Gamble Company Method for delivering an active agent
EP2588654B1 (en) 2010-07-02 2019-08-07 The Procter and Gamble Company Nonwoven web comprising one or more active agents
JP5324709B2 (ja) * 2010-07-02 2013-10-23 ザ プロクター アンド ギャンブル カンパニー 活性剤不織布ウェブを含むフィラメント及びその製造方法
WO2013103626A1 (en) 2012-01-04 2013-07-11 The Procter & Gamble Company Active containing fibrous structures with multiple regions having differing densities
US9139802B2 (en) 2012-01-04 2015-09-22 The Procter & Gamble Company Active containing fibrous structures with multiple regions
MX366484B (es) 2012-01-04 2019-07-10 Procter & Gamble Estructuras fibrosas que comprenden particulas y metodos para fabricarlas.

Also Published As

Publication number Publication date
FR3027035B1 (fr) 2023-11-03
GB2546432A (en) 2017-07-19
CA2961579C (en) 2019-04-16
GB201902804D0 (en) 2019-04-17
BR112017007305A2 (pt) 2017-12-19
CA2961579A1 (en) 2016-04-14
EP3204539A1 (en) 2017-08-16
KR20170048533A (ko) 2017-05-08
FR3027035A1 (fr) 2016-04-15
WO2016057353A1 (en) 2016-04-14
US20160101026A1 (en) 2016-04-14
GB2569707A (en) 2019-06-26
ES2844595T3 (es) 2021-07-22
GB2569707B (en) 2019-12-04
JP2017531103A (ja) 2017-10-19
GB201704868D0 (en) 2017-05-10
DE112015004624T5 (de) 2017-06-29
CN107002327A (zh) 2017-08-01
GB2546432B (en) 2019-05-01
MX2017004581A (es) 2017-06-27
RU2658841C1 (ru) 2018-06-25
EP3204539B1 (en) 2020-11-25
US10792229B2 (en) 2020-10-06

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