FORMATION OF THIN UNIFORM COATINGS ON BLADE EDGES USING ISOSTATIC PRESS

The invention discloses utilizing isostatic-press (IP) processes apply a polymeric material (e.g, a PTFE foil) to uncoated razor blade edges forming thin, dense, and uniform coatings on blade edges which in turn exhibit low initial cutting forces correlating with more comfortable shaves. The isostat...

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Bibliographic Details
Main Authors SONNENBERG, NEVILLE, WANG, XIANDONG
Format Patent
LanguageEnglish
French
German
Published 30.11.2011
Subjects
CUTTING
HAND CUTTING TOOLS
HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SEVERING
TRANSPORTING
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Summary:The invention discloses utilizing isostatic-press (IP) processes apply a polymeric material (e.g, a PTFE foil) to uncoated razor blade edges forming thin, dense, and uniform coatings on blade edges which in turn exhibit low initial cutting forces correlating with more comfortable shaves. The isostatic press may be a hot isostatic press (HIP) or a cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or non-fluoropolymeric material or any composite thereof. The lower surface of the polymeric material may be modified (e.g., chemical etching) to enhance adhesion to the blade edge. Two or more layers of polymeric material of similar or different properties may be isostatically-pressed onto the uncoated blades.
Bibliography:Application Number: EP20100700638