Dissolvable polyvinyl alcohol nonwoven
OwnerThomas Carlyle, Miguel Riverainventors
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Abstract
The present invention relates to a method of preparing a melt-extruded fabric, such as a melt-blown nonwoven fabric capable of dissolution, and more specifically, the present invention relates to a melt-blown nonwoven fabric comprising a polyvinyl alcohol resin capable of totally dissolving in water temperatures up to about 72° Fahrenheit with some mild agitation, such as shaking or stirring.
Claims10
A method of making a dissolvable melt-extruded nonwoven fabric, comprising the steps of:
- a. providing a polyvinyl alcohol resin;
- b. extruding said polyvinyl alcohol resin into filaments;
- c. collecting and consolidating said filaments into a nonwoven fabric;
- and
- d. said nonwoven fabric exhibiting the ability to completely dissolve in water temperatures up to about 72° Fahrenheit.
A multi-layered construct wherein said construct comprises one or more layers of a dissolvable PVOH melt-blown fabric wherein said dissolvable PVOH melt-blown fabric is comprised of the steps of:
- a. providing a polyvinyl alcohol resin;
- b. providing a substrate;
- c. extruding said polyvinyl alcohol resin into discontinuous filaments;
- d. collecting and consolidating said discontinuous filaments onto said substrate;
- and
- e. said consolidated discontinuous filaments exhibiting the ability to completely dissolve in water temperatures up to about 72° Fahrenheit.
Dependencies are inferred from the claim text.