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US 12,685,413 B2Granted
Dispersible wipes reinforced with a binding agent
AssigneeWipeflush Ltd.
InventorsDavid Martin Jackson, Chris Luettgen, Moshe Toprovsky
Life of this patent
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Abstract
Disclosed is a wet wipe, for example, a dispersible wet wipe. The wet wipe may include a base sheet comprising short length fibers; a dispersible binding agent reinforcing the base sheet; and a wetting lotion. The dispersible binding agent may be configured to bind the fibers of the base sheet when the dispersible wiper includes liquid at an amount of at most 400 wt % from the weight of the base sheet and to disperse in excess water if the amount of the water exceeds 500 wt %.
Claims11
A method comprising:
- forming a base sheet using short length fibers processed by wet or air laying of fibers, using a conventional paper machine or air laid machine;
- hydroentangling the base sheet using a low energy hydroentanglement and hydroentangled water needling technique, wherein a pressure level used for the hydroentangling is less than 500 pounds per square inch (PSI);
- applying a dispersible binding agent on top of the wetted, hydroentangled base sheet, by spraying or printing the binding agent on top of the hydroentangled base sheet, to provide a surface coating, yielding a reinforced base sheet having a layer of the binding agent which reinforces the adhesion between the short fibers of the base sheet, wherein said dispersible binding agent is a non-adhesive agent selected from microfibrillar cellulose fibers, nanocrystalline cellulose fibrils, microfibrillated cellulose, nanofibrillated cellulose, nanocellulose crystals, and wherein said dispersible binding agent is in an amount of 0.5-5 gram/square meter (gsm);
- drying the reinforced base sheet;
- and
- adding at most 400 wt. % of a wetting lotion to the reinforced base sheet, to form a wet wipe, wherein the dispersible binding agent binds the short length fibers of the base sheet when the wet wipe contains liquid at an amount of at most 400 wt. % from the weight of the base sheet and disperses in excess water when an amount of water exceeds 500 wt. % from the weight of the base sheet.
3 more elements
Dependencies are inferred from the claim text.