Method of coating a razor blade
A method of making a razor blade by forming a cutting edge on a substrate having an outer bonding surface. A first self-assembled monolayer having a non-fluorinated organic material is deposited on the outer bonding surface of the substrate.
1 . A method for making a razor blade, the razor blade comprising a first self-assembled monolayer (SAM) and a second SAM directly deposited on the first SAM, the method comprising:
forming a cutting edge on a substrate having an outer bonding surface;
depositing the first SAM comprising a non-fluorinated organic material on the outer bonding surface of the substrate, wherein the non-fluorinated organic material is an organosilane, wherein the organosilane is a mixture of compounds having the following general formula:
SiR n X m
in which R is an alkyl group; X is a leaving group selected from a chloride, an alkoxy, or a hydride; n=1-3; and m=1-3; n+m=4 and the alkyl group(s) R may be substituted or unsubstituted, linear or branched, saturated or unsaturated and identical alky groups or different alkyl groups; and
depositing the second SAM comprising a non-fluorinated organic material directly on the first SAM.
2 . The method of claim 1 , further comprising curing the first SAM after depositing the first SAM on the outer bonding surface of the substrate.
3 . The method of claim 2 , wherein the curing is by at least one of UV curing or thermal curing.
4 . The method of claim 3 , wherein the curing is by UV curing with UV light having a wavelength of between 100 nm and 400 nm.
5 . The method of claim 1 , wherein, before the first SAM is deposited, treating the sharpened cutting edge with plasma further comprising gas mixture comprising a process gas and a carrier gas.
6 . The method of claim 5 , wherein the process gas is selected from the group consisting of: molecular oxygen, water, and alcohol; and the carrier gas comprises one or more gases selected from the group consisting of: nitrogen, argon, helium, neon, krypton, xenon, and radon.
7 . The method of claim 1 , wherein depositing the first SAM comprises one or more of: vapor deposition, dipping, flooding, spraying, or soaking.
8 . The method of claim 1 , wherein depositing the first SAM comprises vapor deposition.
9 . The method of claim 1 , wherein a temperature does not exceed 300° C. during the step of depositing the first SAM comprising a non-fluorinated organic material on the outer bonding surface of the substrate.
10 . The method of claim 1 , further comprising: forming the outer bonding surface by depositing at least one layer of material comprising one or more of: (i) diamond, amorphous diamond, or diamond-like-carbon (DLC); or (ii) chromium, platinum, boron, chromium diboride, titanium, titanium diboride, vanadium, aluminum, silicon, magnesium, manganese, iron, cobalt, nickel, copper, silver, zinc, tin, hafnium, tantalum, tungsten, zirconium, molybdenum, or niobium, and oxides, nitrides, and oxynitrides thereof on the substrate, wherein the at least one layer of material is disposed between the substrate and the first SAM.
11 . The method of claim 1 , further comprising: prior to depositing the first SAM, depositing at least one layer of material on the substrate comprising a non-fluorinated organic material on the outer bonding surface of the substrate.
12 . A method for making a razor blade, the razor blade comprising a first SAM and a second SAM directly deposited on the first SAM, the method comprising:
forming an outer bonding surface on a sharpened cutting edge of a razor blade by depositing a first material on the sharpened cutting edge;
treating the outer bonding surface to form a treated outer bonding surface;
depositing the first SAM comprising a non-fluorinated organic material on top of the treated outer bonding surface; and
curing the first SAM to form a cured first SAM, wherein the non-fluorinated organic material is an organosilane, wherein the organosilane is a mixture of compounds having the following general formula:
SiR n X m
in which R is an alkyl group; X is a leaving group selected from a chloride, an alkoxy, or a hydride; n=1-3; and m=1-3; n+m=4 and the alkyl group(s) R may be substituted or unsubstituted, linear or branched, saturated or unsaturated and identical alky groups or different alkyl groups; and
depositing the second SAM comprising a non-fluorinated organic material directly on the cured first SAM followed by curing the second SAM.
13 . The method of claim 12 wherein the curing of the first SAM comprises UV curing.
14 . The method of claim 12 wherein the steps of forming the outer bonding surface, the treating the outer bonding surface, the depositing of the first SAM and the second SAM, and the curing of the first SAM and the second SAM are performed at a processing temperature that does not exceed 300° C.
15 . The method of claim 12 wherein the steps of forming the outer bonding surface, the treating the outer bonding surface, the depositing of the first SAM and the second SAM, and the curing of the first SAM and the second SAM are performed at a processing temperature that does not exceed 200° C.
16 . The method of claim 12 wherein curing the second SAM comprises UV curing.
17 . The method of claim 12 , wherein depositing the first SAM comprises one or more of: vapor deposition, dipping, flooding, spraying, or soaking.