Razors and razor blade cartridges and methods of manufacturing therefore
AssigneeSociete BIC
InventorsAndy Hill, Andy Honour, Jeff Motley
Life of this patent
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Abstract
A razor blade cartridge having at least one razor blade and a housing made from a polymer material and having an outer surface where at least part of the outer surface of the housing is coated with a hydrophilic material, and where the outer surface of the housing includes undulations on at least a portion of the coated part.
Claims34
A razor blade cartridge including at least one razor blade and a housing made from a polymer material having an outer surface, at least part of the outer surface of the housing is coated with a hydrophilic material forming a coating, the outer surface of the housing including undulations, the undulations including an array of troughs and crests, a height of the undulations being defined by a lower trough surface and an upper crest surface, at least a portion of the coated part is disposed on the undulations such that a thickness of the coating extends higher than the height of the undulations and completely fills each of the troughs.
A razor blade cartridge including at least one razor blade and a housing made from a polymer material and having an outer surface, the outer surface being textured, the outer textured surface including a series of gaps and crests, wherein at least part of the outer surface of the housing is coated with a hydrophilic material forming a coating, and the hydrophilic material, being formed from an acrylamide, is disposed upon the textured outer surface of the housing such that a thickness of the coating completely fills the series of gaps and extends higher than a height of each one of the crests.
A method of manufacture of a razor blade cartridge comprising the steps of:
- providing a cartridge housing formed of polymeric material and including a skin contacting surface;
- activating the skin contacting surface of the polymeric material using either physical or chemical means to make the skin contacting surface of polymeric material receptive to grafting;
- grafting a monomer upon the activated skin contacting surface, and subsequently grafting an acrylamide onto the activated skin contacting surface such that the coating extends higher than an array of undulations formed in the skin contacting surface and completely fills a series of gaps created by the undulations.
Dependencies are inferred from the claim text.