SPLITTABLE CHARGEABLE FIBER, SPLIT MULTICOMPONENT FIBER, A SPLIT MULTICOMPONENT FIBER WITH A DURABLE CHARGE, NONWOVEN FABRIC, FILTER, AND YARN CONTAINING THE SPLIT FIBER, AND MANUFACTURING PROCESSES THEREFOR

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(11)

EP 4 144 901 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.04.2023 Bulletin 2023/14

(43)	Date of publication A2:
	08.03.2023 Bulletin 2023/10

(21)	Application number: 21212071.1

(22)	Date of filing: 02.12.2021

(51)

International Patent Classification (IPC):

D01F 8/04^(2006.01)
D01F 8/12^(2006.01)
D04H 1/4382^(2012.01)
D06M 13/52^(2006.01)
D06M 10/02^(2006.01)

D01F 8/06^(2006.01)
D01F 8/14^(2006.01)
D01D 5/096^(2006.01)
D06M 13/224^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	D01F 8/06; D01F 8/14; D01F 8/12; D04H 1/43825; D04H 1/43828; D04H 1/43832; D01F 8/04; D01D 5/096; D06M 13/52; D06M 13/224; D06M 2200/40; D06M 10/025

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

02.12.2020 US 202063120720 P

(71)	Applicants:
	Fiber Innovation Technology, Inc. Johnson City, TN 37604 (US) HDK Industries, Inc. Rogerssville, TN 37857 (US)

(72)	Inventors:
	DUGAN, Jeffrey S. Erwin, 37650 (US) KEELER, Scott Christopher Johnson City, 37601 (US) MILLER, William Cameron Piney Flats, 37686 (US) SANDERS, Robert Gillion Jonesborough, 37659 (US)

(74)	Representative: Marks & Clerk LLP
	15 Fetter Lane London EC4A 1BW London EC4A 1BW (GB)

(54)	SPLITTABLE CHARGEABLE FIBER, SPLIT MULTICOMPONENT FIBER, A SPLIT MULTICOMPONENT FIBER WITH A DURABLE CHARGE, NONWOVEN FABRIC, FILTER, AND YARN CONTAINING THE SPLIT FIBER, AND MANUFACTURING PROCESSES THEREFOR

(57) A process for forming a splittable fiber having the steps of providing a multicomponent fiber; or a multicomponent staple fiber, providing a finish material, and at least partially coating the multicomponent fiber with the finish material to form a splittable fiber. The multicomponent fiber; or a multicomponent staple fiber, contains a first thermoplastic segment comprising polymer component A and a second thermoplastic segment comprising polymer component B. The finish material has an evaporation point of less than about 160°C. A process for forming a nonwoven fabric, a split multicomponent fiber, a split multicomponent fiber with a durable charge, a nonwoven fabric, and a filter and/or a spun yarn formed by the fibers herein is also described.

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