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Razor blades

A technology of blades and razors, applied in the field of razor blades coated with polymers, which can solve the problems of increased blade resistance, achieve good control, minimize the number, improve comfort and safety

Inactive Publication Date: 2010-09-01
THE GILLETTE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, as the number of razor blades per cartridge increases, the resistance of the blades to the skin increases accordingly

Method used

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  • Razor blades
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Examples

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Embodiment Construction

[0015] see figure 1 , the razor blade 10 carries on its upper surface 14 parallel strips of polymer coating 12 . Strips of polymer coating 12 extend perpendicular to the long edge of the blade, ie from blade tip 16 across the flat, non-cutting portion 18 of the blade, to trailing edge 20 . There is no polymer coated on the lower surface of the blade. Such as figure 1 As shown, the portion of the upper surface 14 of the blade between the bars 12 is completely free of polymer coating, as is the tip of the blade. In some implementations, the strip 12 may extend further, eg, to the final tip of the blade, or may be located only in the tip region and not on the flat, non-cutting portion of the blade.

[0016] The parallel strips of polymer coating 12 provide a height difference between the surface of polymer coating 12 and the uncoated upper surface of the blade. The height difference creates a space that can be used to control skin bulge as the blade passes over the user's ski...

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PUM

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Abstract

Razors are provided that include a safety razor blade unit including a guard, a cap, and a blade located between the guard and the cap. The blade includes a first surface comprising a body and a blade edge; and a second surface, wherein the first surface and second surface meet at a tip, and wherein at least a portion of the blade edge of the first surface is coated by a polymer film. Blades for such razors are also provided.

Description

technical field [0001] The present invention relates to razor blades. More particularly, the present invention relates to polymer coated razor blades. Background technique [0002] Users of wet shaving razors are susceptible to excessive nicks and cuts. There are many possible explanations for this phenomenon, but one is the controlled way in which the razor blade glides over the skin and the skin in front of the blade bulges up. Furthermore, as the number of razor blades per cartridge increases, there is a corresponding increase in the resistance of the blades to the skin. [0003] Blades for wet shaving typically include a thin polymer coating on the cutting edge, which reduces frictional resistance between the cutting edge and the skin, thereby reducing cutting force on hair and thus greatly improving shaving comfort . Such coatings are described, for example, in US Patent Nos. 5,645,894 and 5,263,256, the entire disclosures of which are incorporated herein by referen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B26B21/60
CPCB26B21/60B26B21/56B26B21/58B26B21/22
Inventor A·茹克N·索南伯格
Owner THE GILLETTE CO