A nanocellulose composite sheet, comprising a moisturized nanocellulose material and a fabric is disclosed. The moisturized nanocellulose material and the fabric are bonded by mechanical adhesion. A method for manufacturing the nanocellulose composite sheet for use as a dermatological treatment or medical device, and an apparatus for manufacturing the nanocellulose composite sheet are also provided. The nanocellulose composite sheet has contour conformability, excellent skin-adhesion, and high capacity for moisture retention and release, and is ideal for dermatological treatments.
A nanocellulose composite sheet, comprising a moisturized nanocellulose material and a fabric is disclosed. The moisturized nanocellulose material and the fabric are bonded by mechanical adhesion. A method for manufacturing the nanocellulose composite sheet for use as a dermatological treatment or medical device, and an apparatus for manufacturing the nanocellulose composite sheet are also provided. The nanocellulose composite sheet has contour conformability, excellent skin-adhesion, and high capacity for moisture retention and release, and is ideal for dermatological treatments.
B32B 7/14 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
3.
Method and apparatus for producing large uniform thickness nanomaterial sheets
A batch-automated microfiltration press for producing large uniform thickness nanomaterial sheets includes a filtration envelope of variable size that is defined between an upper platen having a fixed position and a lower platen disposed in spaced apart, parallel relation to the upper platen. The upper platen has a plurality of input nozzles and a plurality of flow dispersers associated with each of the input nozzles. Nanoparticles are deposited onto a fine filter membrane positioned in the filtration envelope. Flow channels and drain holes are formed in the lower platen. Each of the flow channels has a non-linear path of travel. A closed-loop fluid control system maintains a predetermined rate of nanoparticle deposition onto the fine filter membrane. A motion control system controls the raising and the lowering of the lower platen, maintaining a constant displacement instead of constant pressure, enabling the production of clean, undamaged sheets of nanomaterial papers.
D21J 3/12 - Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of sheetsManufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of diaphragms
B30B 9/02 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
B30B 1/00 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
4.
Manufacture of hydrated nanocellulose sheets for use as a dermatological treatment
A hydrated, nonwoven nanocellulose sheet and method for manufacturing the nanocellulose sheet are disclosed. The method of manufacture comprises the steps of diluting a purified nanocellulose slurry to form a colloidal nanocellulose suspension, dispersing pure nanocellulose crystals into the nanocellulose suspension in a nanocellulose crystal to total nanocellulose ratio less than 50% weight per weight (w/w), placing the suspension over a filter sheet in a dispensing device, and forming the hydrated, nonwoven nanocellulose sheet by filtering with a pressure difference across the filter sheet, via a high pressure or vacuum filtration process. The hydrated, nonwoven nanocellulose sheet thus manufactured has high conformability, drape-ability, good adhesion to the skin, and a high rate of evaporation, making it ideal for dermatological treatments.
D21H 11/18 - Highly hydrated, swollen or fibrillatable fibres
D21H 11/20 - Chemically or biochemically modified fibres
D21H 15/02 - Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
The present invention is a hydrated, nanocellulose nonwoven sheet and method for manufacturing the nanocellulose sheet having dermatologically active ingredients. The sheet is formed through a high pressure or vacuum filtration process from a dilute suspension. This suspension, which contains the nanocellulose, may also contain dermatologically active ingredients. The dermatologically active ingredients are incorporated into the unwoven sheet. The dilute suspension may contain binding agents that improve the strength of the nonwoven nanocellulose sheet. These binding agents can also be cross-linked after the formation of the sheet by applying other chemical agents or treating the sheet after formation.
D04H 1/4382 - Stretched reticular film fibresComposite fibresMixed fibresUltrafine fibresFibres for artificial leather
D04H 1/732 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
