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Wet shaving system including a mineral oil coated shaving aid

a technology of wet shaving and mineral oil, applied in the direction of metal working devices, etc., can solve the problems of excessive shaving discomfort, composite tends to swell, and application may be too late to prevent unwanted effects, so as to improve shaving comfort and glide. , the effect of inhibiting the swelling inhibiting the water absorption of the shaving aid composi

Inactive Publication Date: 2008-03-13
THE GILLETTE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]The skin engaging member includes a solid, polymeric shaving aid composite that comprises a water-soluble shaving aid dispersed in a water-insoluble polymeric matrix. Importantly, the water soluble shaving aid is coated with mineral oil. Without wishing to be bound by any specific theory, it appears that the mineral oil coating on particles of the water-soluble shaving aid both (a) enhances glide during shaving, and (b) inhibits swelling of the shaving aid composite. It is currently believed that, because mineral oil is a non-polar, water-immiscible hydrocarbon, it is relatively non-susceptible to degradation (e.g., by oxidation) as a result of contact with water. As a result, mineral oil appears to provide a “water-proofing” effect, inhibiting water absorption of the shaving aid composite. Because swelling is inhibited, the shaving geometry of the shaving system is better maintained from shave to shave, helping to maintain shaving performance.

Problems solved by technology

In wet shaving systems, factors such as the frictional drag of the razor across the skin, the force needed to sever hairs, and irritation of pre-existing skin damage can create a degree of shaving discomfort.
A number of problems accompany the use of pre- and post-applied shaving aids.
Post-applied-shaving aids are not present on the skin during shaving and thus their application may be too late to prevent an unwanted affect.
Upon exposure to water, the water-soluble shaving aid leaches from the composite onto the skin and the composite tends to swell.

Method used

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  • Wet shaving system including a mineral oil coated shaving aid
  • Wet shaving system including a mineral oil coated shaving aid
  • Wet shaving system including a mineral oil coated shaving aid

Examples

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Embodiment Construction

[0019]The replaceable shaving system 10 shown in FIG. 1 includes a housing 16, which carries a plurality of blades 18, a guard 20, and a cap 21. A portion of the cap 21 includes a solid, polymeric shaving aid composite 22, which is in the form of an elongated insert member. The shaving aid composite 22 is locked in an opening in the rear of the shaving system and includes a shaving aid that is released during shaving to improve shave attributes. While shown at the rear portion (commonly referred to as the cap portion) of this particular shaving system, the shaving aid composite may be located at any skin-engaging portion of the shaving unit and may be fabricated in any size or shape deemed appropriate. For example, the composite can be incorporated into the shaving units described in U.S. Pat. No. 4,586,225, which is incorporated herein by reference.

[0020]While the shaving aid composite may have any desired shape, one preferred shape is shown in FIGS. 2 and 3, in which shaving aid c...

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PUM

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Abstract

A wet shaving system is disclosed including a blade member and a skin-engaging portion in proximity to said blade member, the skin-engaging portion comprising a solid polymeric shaving aid composite including an exposed portion containing a water-soluble shaving aid dispersed in a water-insoluble polymeric matrix, the water soluble shaving aid being coated with mineral oil.

Description

FIELD OF THE INVENTION[0001]This invention relates to skin engaging members for wet shaving systems.BACKGROUND OF THE INVENTION[0002]In wet shaving systems, factors such as the frictional drag of the razor across the skin, the force needed to sever hairs, and irritation of pre-existing skin damage can create a degree of shaving discomfort. Discomfort, and other problems accompanying wet shaving systems, can be alleviated by the application of shaving aids to the skin. Shaving aids may be applied prior to, during, or after shaving. A number of problems accompany the use of pre- and post-applied shaving aids. Pre-applied-shaving aids can evaporate or can be carried away from the site of application by repeated strokes of the razor. Post-applied-shaving aids are not present on the skin during shaving and thus their application may be too late to prevent an unwanted affect. Both pre-applied and post-applied shaving aids add additional steps to the shaving process.[0003]Shaving aids, e.g...

Claims

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Application Information

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IPC IPC(8): B26B19/44
CPCB26B21/443B26B21/44B26B21/40B26B21/22
Inventor KWIECIEN, MICHAEL J.
Owner THE GILLETTE CO
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