Vibration-resistant dry skin adhesive patch
View Patent ↗The present invention relates to a dry adhesive patch including a first layer flexible and having a structure with embossed or engraved structures on one surface, a second layer flexible and comprising an interlocking coupling surface formed to engage with the embossed or engraved structures of the first layer, and a microchannel structure layer stacked on the opposite surface of the interlocking coupling surface, wherein the microchannel structure layer comprises an adhesive surface comprising a plurality of embossed portions having a flat surface and microchannel grooves between the embossed portions and is exposed.
1 . A dry adhesive patch comprising:
a first layer, flexible and having a structure with embossed or engraved structures on one surface;
a second layer, flexible and comprising an interlocking coupling surface formed to engage with the embossed or engraved structures of the first layer; and
a microchannel structure layer stacked on the surface of the second layer opposite the interlocking coupling surface,
wherein the microchannel structure layer comprises an exposed adhesive surface comprising a plurality of embossed portions having a flat surface and microchannel grooves between the embossed portions.
2 . The dry adhesive patch of claim 1 , wherein the dry adhesive patch is a vibration-resistant patch.
3 . The dry adhesive patch of claim 2 , wherein a vibration frequency dampened by the dry adhesive patch is equal to or higher than 30 Hz.
4 . The dry adhesive patch of claim 3 , wherein the dry adhesive patch has a vibration transmissibility equal to or greater than 99%.
5 . The dry adhesive patch of claim 1 , wherein the dry adhesive patch is for use on a moist skin surface.
6 . The dry adhesive patch of claim 1 , wherein the second layer comprises an embossed structure, and the first layer comprises an engraved structure interlocking with the embossed structure of the second layer.
7 . The dry adhesive patch of claim 6 , wherein the first layer and the second layer have different deformation rates in response to stress.
8 . The dry adhesive patch of claim 7 , wherein the second layer has a higher deformation rate in response to stress compared to the first layer.
9 . The dry adhesive patch of claim 7 , wherein the second layer is made of a more flexible material compared to the first layer.
10 . The dry adhesive patch of claim 7 , wherein the embossed portions of the microchannel structure layer are hexagonal in plane and form hexagonal columns.
11 . The dry adhesive patch of claim 10 , wherein the microchannel grooves have a width configured to allow capillary action by moisture between an adhered surface of the adhesive patch and the microchannels.
12 . The dry adhesive patch of claim 11 , wherein the width of the microchannel grooves ranges from 1 nm to 1000 μm.
13 . The dry adhesive patch of claim 12 , further comprising a hydrogel layer on at least part of a base surface of the microchannel grooves.
14 . The dry adhesive patch of claim 13 , wherein the hydrogel layer has a height lower than the height of the embossed portions from the base surface of the microchannel grooves.
15 . The dry adhesive patch of claim 14 , wherein the microchannel structure layer comprises at least one of natural rubber, nitrile rubber, acrylonitrile-butadiene rubber, styrene-butadiene rubber, chloroprene rubber, butyl rubber, isoprene-isobutylene rubber, ethylene propylene rubber, chlorosulphonated polyethylene rubber, acrylic rubber, fluoro rubber, polysulfide rubber, silicone rubber, butadiene rubber, isoprene rubber, urethane rubber, polyurethane, polyolefin thermoplastic elastomer (TPE), polystyrene TPE, polyvinyl chloride TPE, polyester TPE, polyurethane TPE, polyamide TPE, polyethylene terephthalate (PET), polydimethylsiloxane (PDMS), polyurethane acrylate, polyethylene naphthalate (PEN), and mixtures thereof.
16 . The dry adhesive patch of claim 1 , wherein the interlocking coupling surface comprises a chemical adhesive.
17 . The dry adhesive patch of claim 1 , wherein the embossed or engraved structures on the first layer have a diameter of 1 pm to 10 2 pm.
18 . The dry adhesive patch of claim 1 , wherein the first and the second layers are made of elastomeric or viscoelastic solid or viscoelastic fluid.
19 . The dry adhesive patch of claim 1 , wherein the first and second layers are made of at least one selected from the group consisting of poly dimethyl siloxane (PDMS), poly urethane acrylate (PUA), poly silicon (PS), poly vinyl alcohol (PVA), poly urethane (PU), and polyethylene glycol (PEG).
20 . A vibration transmission interface component comprising:
a dry adhesive patch of claim 1 ; and
a vibration layer attached to the other surface of the first layer opposite the surface on which the structure with embossed or engraved structures is formed.
21 . The vibration transmission interface component of claim 20 , wherein the component is a haptic interface component.
22 . A virtual reality/augmented reality (VR/AR) tactile information implementation device comprising the vibration transmission interface component of claim 21 .