US 12,565,025 B2Granted

Nonwoven laminate

AssigneeCarl Freudenberg KG

InventorsArun Prasad Venugopal, Angela Weik, Aleksander Jovanovic

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Abstract

A nonwoven laminate, includes in order (A) to (F), a spunbond nonwoven layer (A) including fibres with polyethylene terephthalate (PET) and copolyester, and an optional spunbond nonwoven layer (B) including fibres, which include polyethylene terephthalate and copolyester, the nonwoven layer (B) having a higher copolyester content than nonwoven layer (A). A needled staple fibre nonwoven layer (C) includes monocomponent polyethylene terephthalate staple fibres (c1) and multicomponent staple fibres (c2), which include at least a polyethylene terephthalate component and a copolyester component. An optional spunbond nonwoven layer (D) includes fibres, with polyethylene terephthalate and copolyester, the nonwoven layer (D) having a higher copolyester content than nonwoven layer (E). A spunbond nonwoven layer (E) includes fibres with polyethylene terephthalate and copolyester. A nonwoven layer (F) includes monocomponent polyethylene terephthalate fibres and/or multicomponent fibres with at least a polyethylene terephthalate component and a copolyester component. All layers are melt-bonded to each other.

Claims22

Dependent claims

A nonwoven laminate, comprising in order (A) to (F):

a spunbond nonwoven layer (A) comprising fibres, which comprise polyethylene terephthalate (PET) and copolyester;
an optional spunbond nonwoven layer (B) comprising fibres, which comprise polyethylene terephthalate (PET) and copolyester, the nonwoven layer (B) having a higher copolyester content than nonwoven layer (A);
a needled staple fibre nonwoven layer (C), comprising:
monocomponent polyethylene terephthalate (PET) staple fibres (c1), and
multicomponent staple fibres (c2), which comprise at least a polyethylene terephthalate (PET) component and a copolyester component;
an optional spunbond nonwoven layer (D) comprising fibres, which comprise polyethylene terephthalate (PET) and copolyester, the nonwoven layer (D) having a higher copolyester content than nonwoven layer (E);
a spunbond nonwoven layer (E) comprising fibres, which comprise polyethylene terephthalate (PET) and copolyester;
and
a nonwoven layer (F), comprising monocomponent polyethylene terephthalate (PET) fibres and/or multicomponent fibres comprising at least a polyethylene terephthalate (PET) component and a copolyester component,
wherein all layers are melt-bonded to each other.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/481,285Filed 5 Oct 2023
Priority: DE 20 2022 105 716.811 Oct 2022
Published: US 2024/0116269 A111 Apr 2024
Granted: 3 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification31 codes

B32B 5/267
Next to one or more non-woven fabric layers: characterised by at least one non-woven fabric layer that is a spunbonded fabric
B29C 43/305
Making multilayered or multicoloured articles: making multilayered articles
B32B 5/022
Characterised by structural features of a fibrous or filamentary layer: non-woven fabric
B32B 5/06
Characterised by structural features of a fibrous or filamentary layer: characterised by a fibrous or filamentary layer mechanically connected,…