Nonwoven fabric; pouched product and related methods
AssigneeNonwovenn Ltd
InventorsGiovanni Gentilcore, David Hill, Adrian Bisson
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Abstract
The present invention provides a nonwoven fabric comprising a non-fibrous binder having certain solubility characteristics. It also provides a pouched product, the fabric and contents of which have certain solubility characteristics. Related methods are also disclosed.
Claims21
A nonwoven fabric for forming a pouched product, the nonwoven fabric comprising a chemically bonded web of staple fibres;
- wherein the web includes a non-fibrous binder with Hansen solubility parameters meeting the following requirements:
- 17.5≤δd(MPa0.5)≤19.0;
- 4.8≤δp(MPa0.5)≤6.0;
- 7.0≤δh(MPa0.5)≤10.0;
- and R0≤5.0.
A pouched product comprising a pouch formed from a nonwoven fabric comprising a chemically bonded web of staple fibres and a non-fibrous binder;
- wherein the pouch encloses a substance having at least one component;
- wherein the relative energy difference RED calculated in the Hansen space for the non-fibrous binder and said component is greater than 0.8.
A method for manufacturing a nonwoven fabric suitable for forming a pouched product, the method comprising:
- forming a consolidated web by combining a plurality of layers of staple fibres;
- and
- applying a non-fibrous binder to the consolidated web to bond the staple fibres together in a nonwoven fabric,
- wherein the non-fibrous binder has Hansen solubility parameters meeting the following requirements:
- 17.5≤δd(MPa0.5)≤19.0;
- 4.8≤δp (MPa0.5)≤6.0;
- 7.0≤δh (MPa0.5)≤10.0;
- and R0≤5.0.
Dependencies are inferred from the claim text.