JP2000506412A - Shaving device with foam skin engaging element - Google Patents

Abstract

(57) Abstract: A shaving device comprising a support member, at least one blade (20), and a skin engaging element having a skin engaging elastic foam material (60). In a preferred embodiment, the skin-engaging element is attached to a guard and has an elastic foam material and a shaving aid. Also shown is a method of manufacturing a razor head with a skin engaging elastic material.

Description

DETAILED DESCRIPTION OF THE INVENTION             Shaving device with foam skin engaging element   The present invention relates to a razor head, and more particularly to a razor having a foam skin engaging material. About sled head.   Background of the Invention   Traditional shaving equipment usually comes in contact with the user's skin during shaving Of a polypropylene, polystyrene or ABS Use a relatively rigid material such as this. For example, a safety razor has a compound cap Guard follows the cutting edge of the shaving device It is usual to be located in front. This guard and cap are Controls the angle at which the skin meets the cutting edge of the blade.   Guards made of rigid material are shaved before blade edges touch Limit control over skin surface. For example, rigidity used with safety razors The material has a relatively low coefficient of friction on wet skin. Therefore, the skin When the blade reaches the blade, the friction is greater than the rigid material in the U.S. to improve skin contact. Providing an elastic skin engaging element with a coefficient of friction, when it traverses the skin surface It is desirable to improve the position of the bristles before contacting the blade.   Another disadvantage with conventional guards is that the shaving clutch must be A shaving cream containing other desirable active ingredients present in the ream from the skin The guard tends to push away. Therefore, shaving Elastic skin-engaging element that can distribute the desired active ingredient to the surface to be It is desirable to provide.   Summary of the Invention   Various embodiments of the present invention provide improved control of the skin surface, Shell with a razor head having an elastic skin engaging element for performing And a method of manufacturing the razor head.   According to one aspect of the invention, a razor skin engaging element, such as poly Has a greater tendency to rub against the skin surface than traditional rigid polymers such as propylene Foam materials are used in the manufacture of guard bars having a resilient foam material.   The distance between the skin engaging element of the razor head and the skin surface to be shaved By providing a high coefficient of friction, the skin tends to spread slightly, Positions skin and hair before contact, prevents sudden uncontrolled movement, cuts Tend to prevent.   According to another aspect of the invention, the skin engaging element further comprises an elastic material and a skin. Skin contact is even better when compared to materials that have a greater hardness than facial skin. Elastic go with the same hardness as the skin of the face to provide a good feel System material.   According to another aspect of the invention, the skin engaging element further comprises a shaving aid. Including an elastic foam material having a material. Guard elements are especially further It is impregnated with a shaving aid as described in detail. Advantageously, the skin engagement The element is made of open cell foam material and shaving aid material be able to. The pressure applied between the guard and the skin surface accumulates on the skin It will be appreciated that this will affect the shaving aid material.   Another advantageous aspect of embodiments of the present invention is that it reduces the time, effort, and expense required for manufacturing. These examples were made using a self-adhesive elastic foam material that can be reduced. It is easy to build.   These and other embodiments of the present invention are described in detail below with reference to the drawings.   BRIEF DESCRIPTION OF THE FIGURES   FIG. 1 is a perspective view of one embodiment of the present invention for a razor head.   FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.   FIG. 3 shows one skin engaging air of the present invention compressed by normal shaving force. FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. 1 showing the element.   FIG. 4 is a cross-sectional view of one preferred embodiment of the present invention.   FIG. 5 shows the skin engaging element compressed with normal shaving force in FIG. FIG. 4 is a cross-sectional view of the preferred embodiment shown.   FIG. 6 is an enlarged sectional view of the skin engaging element shown in FIGS. 4 and 5.   FIG. 7 is a cross-sectional view of another embodiment of a skin engaging element and a guard.   FIG. 8 is an enlarged view of the skin engaging element shown in FIG.   FIG. 9 is a cross-sectional view of another embodiment of a skin engaging element and a guard.   FIG. 10 is an enlarged view of the skin engaging element shown in FIG.   FIG. 11 is a cross-sectional view of a foam skin engaging element according to another embodiment of the present invention. .   FIG. 12 is a front view of a foam skin engaging element according to another embodiment of the present invention. .   FIG. 13 is a front view of the segmented foam skin engaging element of the present invention. It is.   FIG. 14 is a front view of a foam skin engaging element according to another embodiment of the present invention. .   Detailed Description of the Preferred Embodiment   The present invention relates to a new skin-engaging element having a skin-engaging elastic foam material. And a manufacturing method for forming a razor head.   1 to 3 show a razor head in which a razor head is arranged near a guard element. 1 shows one embodiment of the present invention having a ohm engagement element. In particular, FIG. The razor head shown in FIG. 3 includes a cap 10, a cap blade 20, and a sheet blade 3. 0 and a guard 40 disposed between the side walls 50. Guard 40 A mating element 60 is mounted. As shown in FIG. Most preferably, the tongue 60 extends across the entire width of the razor head. .   The razor head shown is adapted to be connected to a separate razor Although in the form of a cartridge, an advantage of the present invention is that other razor heads and other razors may be used. Equally applicable to eaves apparatus. The razor head used in this specification The term “do” refers to the working part of a disposable razor as well as to separate razors. Includes both disposable cartridges to be attached.   As shown in FIGS. 2 and 3, the guard 40 includes a vertical leg 4 having a vertical surface 43. 2 and a substantially horizontal leg 44 having a substantially horizontal surface 45. Preferably gar Can 40 is a rigid material of the type used in manufacturing razor heads, for example, Manufactured from polypropylene. However, compared to conventional guards, The arm 40 is dimensioned to the minimum necessary to properly support the element 60. Preferably, the cross section is reduced.   The element 60 comprises a skin engaging elastic foam material 62 and a pressure sensitive adhesive 68 Having. The elastic foam material of the illustrated embodiment is coated with a pressure sensitive adhesive 68. The cross section having the mounting surface 63 to be attached is rectangular. Elastic foam material 62 The other surfaces 64 and 65 provide the skin-engaging surfaces described further below. Mo A highly desirable element 60 is a skin engaging element using conventional automation. 60 has a self-adhesive layer such that it is easily adhered to the razor head.   Preferably, as shown in FIGS. 1-3, the elastic foam material 62 is Cell foam or a combination of open and closed cell foam. Open This elastic foam material, which has a closed cell foam, Manufactured from mixtures of Tylene and its natural and nitrile rubbers. Desirably The resilient foam material 62 has a thickness of at least 1.0 mm, preferably about 0.1 mm. 5 mm to about 1.7 mm thick and most preferably, about 0.8 mm to about 1.7 mm. The thickness is 1.2 mm. In addition, the elastic foam material 62 has about the same Preferably, it has a hardness of 5 shores to about 75 shores.   Desirably, the pressure sensitive adhesive 68 attaches the resilient material 62 to the guard 40 Above is mechanically and chemically suitable. Especially in preparation for some shaving The emulsifier attacks the adhesive layer, swells it, makes it gel, and the adhesive machine Mechanical strength can be dramatically reduced. Preferably, the adhesive 68 is about 10 k It can withstand a shear stress of Pa to about 100 kPa. Appropriate pressure response The adhesive is commercially available from Roman GmbH, Germany, especially acrylic pressure sensitive Adhesive, DUPLOTAC160 and DUPLOCOLL3701. Advantageously, such a suitable The pressure sensitive adhesive can be from about 0.01 mm to about 0.2 mm, preferably about 0.05 mm. It can be applied as a layer having a thickness of between 0.1 mm and 0.1 mm.   In FIG. 3, the resilient foam material 62 is generated under a regular shaving force. It is illustrated in the shape shown in FIG. Deformation of the elastic foam material provides a skin-engaging surface 67, Elastic foam material 62, which has a higher coefficient of friction than traditional rigid materials, It is designed to spread the skin slightly. Further, the skin engaging surface 67 is rigid Reduces the deformation resulting from the contact of the hair of the beard with the guard member having a conductive material . After contact with the skin, the elastic foam material 62 returns to its original shape as shown in FIG. You.   Although not described in detail in FIGS. 1 to 3, the shaving cartridge shown in FIG. The lower edge is provided with a suitable contact member 70 for attachment to a razor. Have been. Materials used to form various elements of the razor head Includes various materials. For example, it is particularly suitable for injection molding, Good durability and shelf life, usually in environments encountered during transport and storage It is known to those skilled in the art to use thermoplastic plastics.   As shown in FIG. 1, the plurality of fencing elements 80 include blades 20 and 30. Multiple separated and spaced parts of the cutting edge of the shave are in contact with the skin surface To prevent Also equipped with shaving device without fencing element It is within the scope of the present invention to use a skin engaging element that has been used.   In addition, a razor equipped with a skin engaging element located outside the guard It is also within the scope of the present invention to apply a shaving device such as a pad. For example, One or more sidewall caps between blades on fencing element It is also within the scope of the present invention to provide the skin engaging element of the present invention at or near it It is.   4 and 5 show a foam skin guard with a razor head attached to a guard. 1 shows one preferred embodiment of the invention having a mating element. In this example As shown in FIG. 4, the skin engaging element is tangent to the upper surfaces of the guard and the cap. With a surface arranged parallel to and above the surface arranged to Having a skin-engaging elastic foam material. In FIG. 5, the skin engaging element is It is particularly shown in the form that occurs under normal shaving forces.   More specifically, the razor head shown in FIGS. , Cap blade 120, sheet blade 130, guard 140, and one side thereof And a wall 150. The guard 140 has a skin engaging element 160 attached. Have been. The skin engaging element 160 of FIGS. 4 and 5 Preferably, the foam skin engaging element of the present invention extends over the body width. Can be segmented or laid down smaller than the larger part of the razor head. Can be stretched to cut.   The guard 140 is configured as an L-shaped support member, which is A vertical leg 142 having a substantially horizontal surface 145; 144. Desirably, surface 145 includes guard 140 and line 190 Is substantially parallel to the surface tangent to the top of the cap 110 shown in FIG. Slightly inclined so that   As shown in FIG. 6, the skin engaging element 160 includes an elastic foam material 162 , A first adhesive 164, a stiffener 166, and a second adhesive 168. Desirably, the elastic foam material 162 is attached to the upper skin engaging surface 161 and the lower It is rectangular in cross section having the surface 163. Preferably, the elastic foam material 1 62 is a closed cell foam, which is a combination of open and closed cell foams. There can be.   Referring to FIGS. 4 and 5, the upper surfaces of the guard 140 and the cap 110 are The arrangement surface 145 of the guard 140, which is substantially parallel to the contact surface, facilitates smooth shaving. To maintain the foam elastic material 162 in front of the guard element. further, As can best be seen from FIG. 4, this design provides a constant thickness skin-engaging element. 160, desirably a skin of elastic foam material 162 that allows for the manufacture of The skin engaging surface 161 is disposed so as to be tangent to the upper surfaces of the guard 140 and the cap 110. Extending between 0.0 and 0.2 mm on the textured surface.   The skin engaging element may include additional layers, for example, two or more elastic foams. Layer, two or more elastic coplanar foam materials, very dense Shaving aids as described in more detail below including.   As shown in FIG. 5, the element 160 has a substantially rectangular cross section, It can be compressed to have a rhombus shape under the force of the eaves. Further details At normal shaving force, the mounting surface 163 is The skin engaging surface 161 remains fixed to the surface 145 and the It moves toward the vertical surface 143. Elastic foam after contact with skin is removed The material 162 returns to its original shape, substantially as shown in FIG.   In manufacturing the element 160, first, the elastic foam material 162 64 on the stiffener 166. For example, stiffener 166 may be PET Can be manufactured from foil. From this description, those skilled in the art will appreciate the scope of the invention. Other shapes of stiffeners can be used without departing from the invention. Elastic pho The layers of the material 162 and the stiffener 166 are secured or secured to the surface of the guard 140. An adhesive layer 168 is provided for attachment. Desirably, the adhesive 164 and 166 is a suitable pressure adhesive as described above.   More specifically, a layer of elastic foam material, an adhesive layer, a stiffener, and a stiffener. Forming a large layered planar sheet including a self-adhesive layer disposed on the outer surface of the It is. By using conventional label manufacturing techniques, elastic foam materials and Cut and wind the planar sheet containing the backing film. This coil Multiple discrete parts or individual labels on a continuous backing film Cutting to remove the "ladder-shaped" portion to provide a coil that does Can be. However, this method requires that "ladder-shaped" parts be discarded. Therefore, the yield is low. This method uses a label on the razor head on the assembly line. Step by cutting individual labels directly from the coil before installing the Can be improved. By this method, the individual labels are shown in FIGS. The cross section is almost rectangular as shown in Fig. 6, but it is a parallelogram or trapezoid. Slightly increase.   7 to 10 show two other embodiments of the skin engaging element and guard of the present invention. An example will be described. In particular, FIG. 7 shows surface 2 attached to skin engaging element 260. Shown is a guard 240 with 45. As shown in FIG. 0 has a cross section in the shape of a parallelogram. FIG. 9 illustrates the skin engaging element 360. A guard 340 with a mounting surface 345 is shown. As shown in FIG. The engagement element 360 has a trapezoidal cross-sectional shape. 4 to 6 These shapes, when compressed with normal shaving forces, add Less force, which reduces the reaction force from the surface of the skin and makes it uncomfortable Reduce the feeling. Further, the shapes shown in FIGS. 7 to 10 provide a large skin-engaging surface. Provides and increases friction and skin feel.   Other shapes for the foam skin shape element do not depart from the scope of the invention. Can be used well. Rear surface 462, lower surface 464, curved skin engaging surface 4 FIG. 26 is a cross-sectional view of another foam skin engaging element 460 having a cross-section 66. Rear 4 Either or both 62 and the lower surface 464 are mounted on the support surface of the razor head. Can be attached. FIG. 12 is a front view of another skin engaging element 560. , The element 560 is higher than the rest of the foam skin engaging element. And a raised portion 562 extending upward. Departures from the scope of the invention But extending in other directions, such as forward, backward, downward or a combination thereof. Still another embodiment of the foam skin engaging element 760 is a shaving table. They are arranged in contact with the surface. FIG. 14 shows that the portion 662 is formed by a slit. FIG. 47 shows another shape of the foam skin engaging element 660 being separated. Illustrated The slit actually creates a gap between the separated portions 662, but after cutting Between the adjacent parts of the foam skin engaging element due to the natural elasticity of the foam Use a foam with a slit that does not leave a void. Nevertheless , Such slits direct relative movement between such parts during shaving Up. The slit shown is a small part of the extension of the foam skin engaging element However, such a slit is exposed to the skin engaging element 660. Forming shallower or deeper is also within the scope of the present invention. Various skin of the present invention The engagement element may be provided in one or more of the ways described herein or in accordance with the present invention. To the appropriate surface of the shaving device by other means without departing from the scope of Can be.   Another preferred embodiment of the present invention provides that the element comprises an elastic foam material and a shading. A skin engaging element having a bing aid material. This shaving aid Can be a separate layer or an integral layer placed within an elastic foam material such as an open cell. Either.   A number of different materials are suggested for use such as shaving aids ing. As used herein, "shaving aids" refer to water-insoluble microporous Active ingredients combined in a distribution device, such as a trics structure, or single active ingredients Equal to one of The aforementioned active ingredients are disclosed in Booth, US Pat. No. 4,170, No. 821, which is incorporated herein by reference. Shabin The auxiliaries include one or various combinations of the following.   A. Lubricants that reduce the friction between the razor and the skin; Capsule silicone oil.   B. Chemicals that reduce scratches between the razor parts and the shaver face, for example, Polyethylene polyethylene in the molecular weight range between 100,000 and 6,000,000 Plants such as oxides; nonionic polyacrylamides; and / or guar gum Natural polysaccharide derived from the material.   C. The chemical of the hair so that the razor blade can pass through the beard very easily Chemicals that modify the structure, such as depilatory agents, are one example.   D. More easily flushes whiskers and skin debris from razor parts during shaving Cleaning agents that can be used, for example, silicon polyethylene oxide blocks Detergents such as copolymers and sodium lauryl sulfate.   E. FIG. A drug that kills microorganisms and repairs skin damage and scratches.   F. Cosmetics that soften, lubricate, condition or improve the skin .   G. FIG. Blood coagulation for control of razor cuts and cut-off bleeding Agent.   H. Restricts blood vessels, like lymph fluid from skin stimulated during shaving Astrinsen stops the flow of bodily fluids.   As another example, shaving aids are disclosed in US Patent No. 5,056,2 to Thoene. No. 21, Shaving aid, U.S. Pat. No. 044,120, US Pat. No. 5,095,619 to Davis et al. Miyazaki et al. In Japanese Patent Application Publication No. 7-24156.   Other active ingredients include various pigments such as titanium dioxide, fragrances, Evera, flavoring agents, mineral oils, essential oils extracted from plants And other oils. In addition to one or more active ingredients, the Shavin of the present invention Auxiliaries such as water-insoluble polymers such as polystyrene and polyurethane Other components or mixtures of components.   Another embodiment of the present invention includes providing a support, such as a razor head. Having at least one self-adhesive surface for contacting the self-adhesive surface with the support A skin engaging element is provided. Such self-adhesive elastic foam materials are indispensable. Die-cut to the required dimensions and use conventional automated equipment to razor Ideally suited to be contacted by a pad. Preferably, the front facing part Providing and contacting the self-adhesive surface comprises the step of facing the self-contact surface forward. Contact. Desirably, the step of providing a skin engaging element comprises: A foam material and a shaving aid material as described above are provided.

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Claims (1)

[Claims]   1. A support and at least one blade;   A skin engaging element attached to the support, A shaving device wherein at least a part of the material comprises a foam material.   2. The shaving device according to claim 1, wherein the foam material has elasticity.   3. 3. The shell of claim 2, wherein said resilient foam material comprises a closed cell foam. Serving device.   4. 3. The shell of claim 2, wherein said elastic foam material comprises open cell foam. Serving device.   5. The method according to claim 2, wherein the elastic foam material is a polyurethane foam. Shaving device.   6. The main part of the skin engaging element has a skin engaging elastic foam material The shaving device according to claim 2.   7. 3. The skin engaging element according to claim 2, wherein the entire skin engaging element comprises an elastic foam material. Shaving equipment.   8. 3. The device according to claim 2, wherein a part of the element is disposed in front of the blade. On-board shaving device.   9. The-portion of the support member has a guard surface with a substantially vertical surface, and the 3. A shaving device according to claim 2, wherein a ment is mounted on the vertical surface. .   10. The support has a guard with a surface that is disposed substantially horizontally. 3. The shaving device according to claim 2, wherein the element is attached to the horizontal surface. .   11. The support has a cap and a guard, and the guard includes the cap. Horizontal direction which is arranged almost parallel to the metaphor so as to be tangent to the upper surface of the The shaving device according to claim 2 having a surface.   12. The element may be configured such that a portion of the skin-engaging elastic foam material is The horizontal so that it is positioned parallel to the surface tangent to the top of the The shaving device according to claim 11, wherein the shaving device is attached to a directional surface.   13. A portion of the skin-engaging elastic foam material may include the cap and the gar. A contractor extending between about 0.0mm and about 0.2mm on the surface tangent to the upper surface of the 13. The shaving device according to claim 12.   14． The element bonds the elastic foam material to the support. The shaving device according to claim 2, further comprising an agent.   15. The adhesive is a layer having a thickness of about 0.01 mm to about 0.2 mm. The shaving device according to claim 14, wherein   16. The adhesive is a layer having a thickness of about 0.05 mm to about 0.1 mm. The shaving device according to claim 15, wherein   17． The shaving according to claim 14, wherein the adhesive is a pressure-sensitive adhesive. apparatus.   18. 18. The shaving device according to claim 17, wherein the adhesive comprises an acrylic pressure adhesive. Device.   19. 3. The skin engaging elastic foam material according to claim 2, wherein the material is rectangular in cross section. A shaving device according to any of the preceding claims.   20. 20. The resilient foam material of claim 19, wherein the resilient foam material is about 0.5 mm thick. Shaving device.   21. The elastic foam material is about 0.8 mm to about 1.2 mm thick. 21. The shaving device according to claim 20, wherein   22. The skin-engaging elastic foam material has a parallelogram-shaped cross section. Item 3. A shaving device according to item 2.   23. 3. The skin engaging elastic foam material of claim 2 having a trapezoidal cross section. A shaving device according to any of the preceding claims.   24. 3. The element of claim 2, wherein the element further comprises a shaving aid. Shaving equipment.   25. The shaving aids include lubricants, pharmaceuticals, vitamins, cosmetics, Glue containing blood, astringent, skin conditioner, and mixtures thereof The shaving device according to claim 24, wherein the shaving device is selected from the group consisting of:   26. The element comprises a stiffener material attached to the elastic foam material 3. The stiffener material of claim 2, wherein the stiffener material is attached to the support. Shaving device.   27. The foam material has a hardness of about 5 Shore 00 to about 75 Shore A. The shaving device according to claim 2, comprising:   28. An elastic foam material;   A shaving aid having at least one active ingredient.   29. 29. The method according to claim 28, further comprising an adhesive layer fixed to the elastic foam material. Shaving aid.   30. 3. A stiffener material attached to said resilient foam material. 8. The shaving aid according to 8.   31. The-part of the active ingredient is located below the skin engaging surface of the elastic foam material 29. The shaving aid according to claim 28, which is used.   32. Providing a support;   Skin engaging with skin engaging elastic foam material and at least one self-adhesive surface Preparing an element;   Contacting the self-adhesive surface with the support member; and Manufacturing method to be formed.   33. The step of providing the support includes the step of providing a forward facing portion. 33. The method according to claim 32, wherein   34. The step of contacting the self-adhesive surface faces the self-adhesive surface forward. 34. The method of claim 33, comprising contacting the portion.   35. The step of preparing the skin engaging element includes preparing a shaving aid. 33. The method of claim 32, comprising the step of:   36. The step of preparing the skin engaging element includes the step of preparing a stiffener. 33. The method of claim 32, comprising:   37. 3. The device according to claim 2, wherein the skin engaging element has a curved skin engaging surface. On-board shaving device.   38. The foam portion of the skin engaging element includes a first portion and a second portion. A first portion extending above the second portion. A shaving device according to claim 1.   39. The foam portion of the skin engaging element passes through at least a portion. 3. The shaving device according to claim 2, wherein the shaving device has at least one slit extending in a direction. Place.   40. 3. A shaving device according to claim 2, comprising a plurality of foam skin engaging elements. Device.