EP2488330B1 - Lubrication box for a wet shaving implement - Google Patents
Lubrication box for a wet shaving implement Download PDFInfo
- Publication number
- EP2488330B1 EP2488330B1 EP10770920.6A EP10770920A EP2488330B1 EP 2488330 B1 EP2488330 B1 EP 2488330B1 EP 10770920 A EP10770920 A EP 10770920A EP 2488330 B1 EP2488330 B1 EP 2488330B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubrication box
- shaving aid
- aid material
- cavity
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- 239000000463 material Substances 0.000 claims description 54
- 238000004519 manufacturing process Methods 0.000 claims description 15
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- 238000000465 moulding Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 10
- 238000005056 compaction Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
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- 239000011162 core material Substances 0.000 description 4
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- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
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- JYCQQPHGFMYQCF-UHFFFAOYSA-N 4-tert-Octylphenol monoethoxylate Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCO)C=C1 JYCQQPHGFMYQCF-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 239000004141 Sodium laurylsulphate Substances 0.000 description 1
- 229930003427 Vitamin E Natural products 0.000 description 1
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- -1 but not limited to Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002951 depilatory effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 210000002751 lymph Anatomy 0.000 description 1
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- 229920002113 octoxynol Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 229920002338 polyhydroxyethylmethacrylate Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229940068984 polyvinyl alcohol Drugs 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000037380 skin damage Effects 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
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- 229920002554 vinyl polymer Polymers 0.000 description 1
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- 239000011709 vitamin E Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/40—Details or accessories
- B26B21/44—Means integral with, or attached to, the razor for storing shaving-cream, styptic, or the like
Description
- The present invention is generally directed to a lubrication box for a wet shaving implement in general and, more particularly, to a mechanically assembled lubrication box that provides lubrication during shaving.
- Wet shaving implements generally consist of a shaving cartridge, also commonly known as a razor cartridge, and a handle. The shaving cartridge can be fixedly, or pivotally, attached to the handle. In addition, the shaving cartridge might be affixed to the handle such that, after several uses, a spent shaving cartridge can be replaced with a new shaving cartridge on the same handle. Such handles and shaving cartridges are often referred to as "system razors." Alternatively, the shaving cartridge can be affixed to the handle such that it is not intended to be removed from the handle during normal use and, once the shaving cartridge is spent, the entire shaving implement is discarded and an entirely new shaving implement is used in the now-discarded shaving implement's place. Such shaving implements are often referred to as "disposable razors." Shaving cartridges generally include a guard, a cap, and at least one blade. Prior art guards are located forward of the blade(s) and acts to flatten and/or pre-stretch the skin prior to encountering the blade. Prior art caps are often located aft of the blade(s) and, in addition to flattening the skin after the skin has been shaved, can also provide lubrication and/or other shaving aids to the recently-shaved skin. Typically, the lubrication and/or shaving aids are provided by a lubrication strip that is affixed to the cap.
- In many cases, these lubrication strips utilize two components: a water soluble component that is dispersed throughout a water insoluble matrix. The water insoluble matrix maintains the integrity of the lubrication strip during normal use, permitting water soluble components to dissolve in the water present during normal shaving. Once dissolved in water, the water soluble shaving aid leaches onto the surface to be shaved, providing a shaving benefit. These lubrication strips are typically adhered to or mechanically fastened to the wet-shave razor cartridge. These forms of lubrication strips have deficiencies. At first, the shaving aid tends to leach superfluously during first few shaves. However, the amount of water soluble shaving aid lessens with each subsequent shave, thereby dissipating and often outlasted by the other components of the razor cartridge. Accordingly, the last several shaves also provide insufficient lubrication to the surface being shaved. Furthermore, current insoluble matrices do not permit complete leaching of all shaving aid, and are thus wasteful.
-
WO-A-96/02369 - Other wet-shave razors embed lubrication elements, such as
U.S.-A-5,711,076 teach a co-extruded core and sheath set-up, where the water soluble core is co-extruded with a water insoluble sheath. The sheath portion according toUS-A-5,711,076 includes holes through which dissolved core material leaches during normal shaving. However, Tseng, and similar lubrication devices also have deficiencies. These deficiencies include, among others, limited flexibility due to the co-extruded/co-molded manufacturing process; high temperatures and pressures required in extrusion and molding processes that tend to degrade the active shaving aid ingredients; and the fact that the co-molded/co-extruded set-up provides substantially problems when the core swells during normal use. - Accordingly, it is an object of the present invention to provide a lubrication agent and method of manufacture that improves the effectiveness and life expectancy of lubrication agents.
- The invention provides a lubrication box according to claim 1 and a method of making a lubrication box according to
claim 16. The dependent claims relate to individual embodiments of the invention. - According to one aspect of the present invention, a lubrication box includes a first portion, a shaving aid material, and a second portion. The first portion of the lubrication box has a skin-engaging surface and at least one sidewall that, together, form a cavity. There are at least two holes extending through the skin-engaging surface of the first portion. The shaving aid material (referred to hereinbelow as shaving aid) is ultrasonically compressed (also known as ultrasonically compacted) into the cavity such that it at least partially fills at least one of the holes in the skin-engaging surface and at least a portion of the cavity. The second portion of the lubrication box is attached to the first portion such that the cavity is substantially closed. A gap exists in the cavity between the shaving aid and the second portion of the lubrication box to permit the shaving aid material to expand during normal use.
- According to another aspect of the invention, the shaving aid is distributed into the cavity in a series of layers (e.g., first, second, third, or more).
- According to a further aspect of the present invention, the various layers of shaving aid can be of the same or different color, amount and/or chemical composition as one or more of the other layers of shaving aid.
- According to an even further aspect of the present invention, the second portion of the lubrication box can include support structures that extend into the cavity to a position near or directly in contact with the shaving aid.
- These and other aspects of the present invention are achieved by the apparatus and method of making the present invention disclosed herein. The invention will be clear to one of skill in the art in light of the Detailed Description and Drawings provided.
-
-
Fig. 1 depicts a front view of one embodiment of a wet shaving cartridge of the present invention; -
Fig. 1A depicts a front view of another embodiment of a wet shaving cartridge of the present invention; -
Fig. 1B depicts a front view of a further embodiment of a wet shaving cartridge of the present invention; -
Fig. 1C depicts a front view of an even further embodiment of a wet shaving cartridge of the present invention; -
Fig. 2 depicts a cross-sectional view along line II-II of the cartridge ofFig. 1 on a razor handle; -
Fig. 3 depicts an isometric view of one embodiment of a lubrication box of the present invention; -
Fig. 4 depicts a cut-away view along line IV-IV of the first portion of the lubrication box ofFig. 3 with a first layer of shaving aid therein; -
Fig. 4A depicts a cut-away view along line IV-IV of a second layer of shaving aid in the first portion of the lubrication box ofFig. 4 ; -
Fig. 4B depicts a cut-away view along line IV-IV of a third layer of shaving aid in the first portion of the lubrication box ofFig. 4A ; -
Fig. 5 depicts a cut-away view along line V-V of one embodiment of a second portion of the lubrication box affixed to the first portion of the lubrication box ofFig. 4A ; -
Fig. 5A depicts another embodiment of the second portion of the lubrication box ofFig. 3 ; -
Fig. 5B depicts a further embodiment of the second portion of the lubrication box ofFig. 3 ; -
Fig. 6 depicts a step in the method of making a lubrication box; -
Fig. 6A depicts another step in the method of making a lubrication box; -
Fig. 6B depicts a further step in the method of making a lubrication box; -
Fig. 6C depicts a further step in the method of making a lubrication box; -
Fig. 6D depicts a further step in the method of making a lubrication box; and -
Fig. 6E depicts a further step in the method of making a lubrication box. - Referring to
Figs. 1, 1A ,1B, and 1C several embodiments of the shavingcartridge 102 of the present invention are shown. The shavingcartridge 102 of the present invention includes at least aframe 104, at least onerazor blade 106, and alubrication box 108. - The shaving
cartridge 102 of the present invention is often used in conjunction with a handle 10 (see e.g.,Fig. 2 ). Thehandle 10 is connected to theshaving cartridge 102, either pivotally or fixedly. Thehandle 10 can be connected to theshaving cartridge 102 in any suitable manner. For example, thehandle 10 can be permanently connected to therazor cartridge 102, as is well known in disposable wet shaving implements. Alternatively, the handle can be selectively detachable from the shaving cartridge, as is well known in system wet shaving implements. Thehandle 10 can be made of any suitable materials and is, typically, ergonomically shaped such that it is easy to hold by the end user during shaving. - The shaving
cartridge 102 of the present invention includes aframe 104 and at least oneblade 106. Theframe 104, which can be made of one or more distinct pieces, typically forms anopening 105 sized to accommodate razor blade(s) 106 (discussed infra.). In some embodiments, such as the one shown inFig. 1 , theframe 104 includes aguard 12 in front of theblades 106. In these embodiments, theguard 12 can be of any suitable type known in the art. - The
frame 104 can be made of any suitable material. Molded polymeric materials, or plastics, have proven to be the most effective. Theframe 104 is also often either permanently connected to ahandle 10 or includes connectors (not shown) such that a user can selectively attach and detach the cartridge from ahandle 10. - The
guard 12 is, generally, disposed lengthwise on the frame forward of theblades 106 and includes an outer skin-engagingsurface 14. Theguard 12 may be made of any suitable material known (e.g., rubber) to those of skill in the art and may include additional elements, such as one ormore protrusions 16 that flex when in contact with the skin during normal shaving. Theguard 12 generally stretches, flattens and otherwise prepares the skin prior to the skin encountering the sharpenedblade tips 22.Guards 12 are well known in the art and will therefore not be discussed in detail further herein other than to point out that the present invention is not limited to being used with any particular type ofguard 12. - The
opening 105 in theframe 104 is sized and shaped to accommodaterazor blades 106 positioned therein. Any suitable number of blades 106 (e.g., one, two, three, four, five, six or more) can be positioned within theopening 105 of theframe 104. Generally, theopening 105 is larger in shavingcartridges 102 havingmore blades 106, and smaller for shavingcartridges 102 havingfewer blades 106. Eachblade 106 is generally planar and defines alength 18 and awidth 20 and is disposed in theopening 105 of theframe 104 such that the sharpenedblade tip 22 is appropriately angled for shaving. In embodiments having more than oneblade 106, theblades 106 are generally positioned in parallel relation to one another between the front 58 and rear 60 of theframe 104. Each of theblades 106 has afront side 24 and a rear side (not shown) that extend along thelength 18 of theblade 106 on opposing sides. A sharpenedblade tip 22 extends along at least a portion of ablade 106width 20 on thefront side 24. Eachblade 106 is disposed on theframe 104 such that the sharpenedblade tip 22 of eachblade 106 is located substantially near the shave plane. In other words, the sharpenedblade tip 22 of eachblade 106 may be substantially contiguous with, slightly above, or slightly below the shave plane. Furthermore, eachblade 106 may be mounted on theframe 104 such that the sharpenedblade tip 22 is movable relative to the shave plane under forces encountered during normal shaving. For example, in some embodiments, the sharpenedblade tip 22 may be located above the shave plane when the shavingcartridge 102 is at rest, but may deflect to a position below the shave plane under the forces on theblade 106 during normal shaving. The location of eachblade 106 relative to the shave plane is independent to the location of each of the other blade(s) 106 relative to the shave plane. - Typically,
blades 106 are made of flexible material and are supported in theframe 104 to prevent, or at least somewhat inhibit, flexing of theblades 106 during normal shaving. Several manners for supporting theblades 106 are known in the art. For example, in some embodiments, eachblade 106 may be welded to a bent blade support (see e.g.,Fig. 2 ) that provides a rigid support structure to theblades 106. - Referring to, e.g.,
Figs. 3 ,4 ,4A and4B , according to one embodiment of the present invention, alubrication box 108 includes afirst box portion 28, a shavingaid 30, and asecond box portion 32. One embodiment of thelubrication box 108 of the present invention is shown, separate from theframe 104, inFig. 2 . Thelubrication box 108 is attached to theframe 104, directly or indirectly. For example, as shown inFig. 1 , thelubrication box 108 can be located aft of the blade(s) 106. Or, as shown inFig. 1A , in other embodiments, thelubrication box 108 can be located forward of the blade(s) 106. In further embodiments, as shown inFig. 1B , thelubrication box 108 can be located forward and aft of the blade(s) 106. And, in even further embodiments, as shown inFig. 1C , thelubrication box 108 can substantially surround the blade(s) 106. - One embodiment of the
first portion 28 of thelubrication box 108 can be seen inFig. 3 . Thefirst portion 28 includes a skin-engagingsurface 34 and at least oneside wall 36 that extend(s) from the skin-engagingsurface 34 to create acavity 40. The skin-engagingsurface 34 can be of any suitable shape and size and includes at least twoholes 38 extending into the cavity. As shown inFIGS. 1,1A and1B , the skin-engagingsurface 34 can be generally rectangular and is approximately 3mm in width and approximately 40mm in length. Alternatively, as shown inFig. 1C , the skin-engagingsurface 34 can be generally oval with a center hole through which ashaving cartridge 102 can pass. However, the present invention is not limited by the shapes and/or size shown and disclosed, and can be of any shape suitable to the designer. Likewise, the at least two holes 38can be of any suitable size and shape, depending on the needs and wants of the designer. Although the at least twoholes 38 are shown in the FIGS. as being in a single row, they can be arranged in any suitable pattern, including multiple rows, and symmetrical and asymmetrical patterns. Thefirst portion 28 can be made of any suitable material, including, but not limited to, plastics, metals, and rubber. Preferably, the entirefirst portion 28 is a unitary piece made from a single piece of material; however the present invention is not so limited. For example, although not shown, the skin-engagingsurface 34 can be made of a different material than the sidewall(s) 36. - The sidewall(s) 36 extend from skin-engaging
surface 34 to create acavity 40. As shown, for example, inFIGS. 1-1C , the sidewall(s) 36 can extend generally at a right angle to the skin-engagingsurface 34, but one of skill in the art recognizes that the present invention is not so limited. For example, the skin-engagingsurface 34 could gently transition into the sidewall(s) 36 via a smooth curve so that the edge of thelubrication box 108 gently flattens to the user's skin during normal shaving. The sidewall(s) 36 can be of any suitable height, depending on the needs and wants of the designer. As shown inFIGS. 2 and3 , the sidewall(s) 36 are approximately 4mm in height, creating acavity 40 that has a volume of approximately 480mm3, not including the volume of the at least twoholes 38. - A first layer of shaving
aid 50 is ultrasonically compressed into thefirst portion 28 of thelubrication box 108 such that the first layer of shavingaid 50 is compacted in at least a portion of thecavity 40 and, preferably, compacted such that a portion of the first layer of shavingaid 50 substantially fills at least one of theholes 38. Even more preferably, the first layer of shavingaid 50 substantially fills all of theholes 38. And, most preferably, the first layer of shavingaid 50 completely fills all of theholes 38. The shavingaid 30 is generally added in solid form (e.g., in a powder) and ultrasonically compressed to form a unitary solid body that generally matches the interior shape of thecavity 40 and holes 38. The compaction of the material further frictionally locks the first layer of shavingaid 50 into the desired position (i.e., in at least a portion theholes 38 and the portion of thecavity 40 adjacent the holes 38). - The shaving
aid 30, preferably, includes 100% water soluble shaving aid materials, although water insoluble shaving aid materials are acceptable. For example, the shavingaid 30 can include any substance that enhances shaving performance. It may, for example, improve shaving comfort (e.g., by lubricating the skin, improve shaving efficiency, condition the beard, or condition the skin). Examples of appropriate shaving aids 30 include lubricous water-soluble polymers such as polyethylene oxide, polyvinyl pyrrolidone, polyacrylamide, hydroxyethyl cellulose, hydroxypropyl cellulose, polyvinyl imidazoline, polyhydroxyethylmethacrylate, poly vinyl alcohol. The preferred lubricous water-soluble polymer is polyethylene oxide. The more preferred polyethylene oxides will preferably have molecular weights of about 100,000 to 8 million, most preferably about 300,000 to 5 million. The most preferred polyethylene oxide comprises a blend of about 40 to 80% of polyethylene oxide having an average molecular weight of about 5 million and about 20 to 60% of polyethylene oxide having an average molecular weight of about 300,000. - The polyethylene oxide blend may also advantageously contain plasticizers. The use of the plasticizers allows the utilization of substantially lower temperatures during the time of processing to produce a flowability of the polyethylene oxide during ultrasonic compressing without substantially reducing its molecular weight. Preferred plasticizers are polyethylene glycol particularly with molecular weight between 400 and 20,000, water soluble polypropylene glycol particularly with molecular weight between 400 and 4,000, water-soluble copolymers of ethylene and propylene oxide, water-soluble aklyl phenol ethoxylates, glycerine, sorbitol and water. Particularly preferred plasticizers are propylene glycol and octyl phenol ethoxylate with 9 moles of ethylene oxide.
Additional ingredients to the shavingaid 30 can include: - A. A lubricating agent for reducing the frictional forces between the skin engaging elements and the skin, e.g., a micro-encapsulated silicone oil.
- B. Any additional agent which reduces the drag between the skin engaging elements and the shaver's face, e.g., a non-ionic polyacrylamide; and/or a natural polysaccharide derived from plant materials such as "guar gum."
- C. An agent which modifies the chemical structure of the hair to allow the at least one
razor blade 106 to pass through the whiskers very easily, e.g., a depilatory agent is one example. - D. A cleaning agent which allows the whisker and skin debris to be washed more easily from the skin engaging elements during shaving, e.g., a silicon polyethylene oxide block copolymer and detergent such as sodium lauryl sulphate.
- E. A medicinal agent for killing bacteria, or repairing skin damage and abrasions.
- F. A cosmetic agent for softening, smoothing, conditioning or improving the skin.
- G. A blood coagulant for the suppression of bleeding that occurs from nicks and cuts.
- H. An astringent for constricting blood vessels thereby stemming the flow of bodily fluids such as lymph, which can exude from skin which has been irritated during shaving.
- Additional layer(s) of shaving aid 54 can be added to the
cavity 40 of the first portion of thelubrication box 28. In some embodiments, a designer may choose to have the subsequent layers 54 included in thelubrication box 102 be generally the same, if not identical, in amount and/or chemical composition to previous layer(s). However, a designer may prefer that a subsequent layer 54 be different than a previous layer in one or more aspects. For example, a subsequent layer 54 may be designed such that it is a different in amount, chemical composition, and/or color than a previous layer. Such a change could be used to provide a varied shaving benefit to the user and/or notify a user that, for example, thelubrication box 108 has almost reached its usable lifespan. - The
second portion 32 of thelubrication box 108, as shown inFIGS. 5 ,5A and 5B , is affixed to thefirst portion 28 of thelubrication box 108, substantially encasing the shavingaid 30 therein. Thesecond portion 32 of thelubrication box 108 can be of any suitable shape and size, provided that thesecond portion 32 of thelubrication box 108 substantially covers the open end of thecavity 40 formed by the sidewall(s) 36 and skin-engagingsurface 34 of thefirst portion 28 of thelubrication box 108. In addition, thesecond portion 32 of thelubrication box 108, preferably, is shaped such that agap 42 exists between the shavingaid 30 and theinner surface 44 of thesecond portion 32 of thelubrication box 108. Theair gap 42 provides space for the shavingaid 30 to expand when wetted. The expansion of the shavingaid 30 can, otherwise, cause an excessive amount of shavingaid 30 to exit through the at least twoholes 38 and/or cause the first 28 and/orsecond portion 32 of thelubrication box 108 to separate from one another, deform and/or crack. - The
second portion 32 of thelubrication box 108 can be made from any material; however, it is often preferable for the material to be made of plastic, metal or rubber. Thesecond portion 32 of thelubrication box 108 can be attached to thefirst portion 28 of thelubrication box 108 in any suitable manner. The most suitable manner for attaching the twoportions lubrication box 108 often depends on the type of material used. For example, ultrasonically welding the twoportions lubrication box 108 together has been shown to have particular utility when, for example, the twoportions lubrication box 108 are made from plastic materials. However, the present invention is not so limited, and the twoportions lubrication box 108 can be glued or otherwise bonded together. In addition, in some embodiments, a physical connection (e.g., male/female connectors, press fit) is suitable. - The size of the
gap 42 between the shavingaid 30 and thesecond portion 32 of thelubrication box 108 depends on a number of factors, including, but not limited to, the size of thelubrication box 108, and the amount of shavingaid 30 added to thecavity 40. In some cases, asmall hole 55 through thefirst portion 28 orsecond portions 32 of the lubrication box 108 (see e.g.,Fig. 5B ) can assist to alleviate the build-up of excessive pressure inside thelubrication box 108 during normal use. - In some embodiments, and specifically referring to
Fig. 5A , thesecond portion 32 of thelubrication box 108 can include one or more additional support features 46 that extend into thecavity 40 that are in close proximity to, or in direct contact with, the shavingaid 30. During use, as water mixes with the shavingaid 30, a portion of the shavingaid 30 begins to dissolve. As more andmore shaving aid 30 dissolves, thecompacted shaving aid 30 will often, undesirably, become dislodged from its position in thecavity 40. The support feature(s) 46 tend to hold the shavingaid 30 forwards in thecavity 40 in close proximity to the at least twoholes 38, where the shavingaid 30 is most likely to mix with water and provide the maximum shaving benefit to the skin during normal use. The support features 46 can be located adjacent the side wall(s) 36, and/or away from the side wall(s) 36 and towards the center of thecavity 40. Preferably, the support feature(s) 46 provide support for the shavingaid 30 at several locations within thecavity 40. - One method of making the shaving
cartridge 102 of the present invention includes, first, providing afirst portion 28 of thelubrication box 108. As noted above, thefirst portion 28 of thelubrication box 108 can be made of any suitable material by any known means (e.g., molding a plastic first portion of the lubrication box 28). Thefirst portion 28 of thelubrication box 108 is placed in asupport nest 62 and a first amount of shavingaid 30 is distributed in thecavity 40. - Once the first amount of shaving
aid 30 is distributed in thecavity 40 of thefirst portion 28 of thelubrication box 108, apiston 48 then repeated applies pressure, ultrasonically compacting the shavingaid 30, forming a first layer of shavingaid 50. For example, in an embodiment using 25-45mg polyethylene oxide with a Vitamin E additive, the piston applies approximately 445 N - 627 N (100-150 lbs) of force, 15-20J of energy provided by an ultrasonic source for approximately .1 to .2 seconds hold time during a single cycle. The actual number of times, length of time, amount of energy and/or amount of force applied may vary depending on numerous factors, including but not limited to the amount of shaving aid being compacted, the type of shaving aid being compacted, the actual size and shape of the lubrication box, and the desired level of compaction. The ultrasonic compaction process enables good compaction of materials while not subjecting active ingredients to conditions (e.g., high temperatures and/or pressures for extended periods of time) that tend to degrade the active ingredients in the shavingaid 30, thus hindering the ability of the materials to provide the intended shaving benefit. As a benefit of the ultrasonic compaction process, a high percentage of active ingredients in the shavingaid 30 survive and are available during normal use to provide the anticipated benefit. - Once the first layer of shaving
aid 50 is formed, or compacted, a second amount of shavingaid 30 is, optionally, distributed into thecavity 40 of the first portion of thelubrication box 28. The above ultrasonic compaction process is repeated. - Optionally, once the second layer of shaving
aid 52 is compacted, a third, fourth, or more layers of additional amounts of shaving aid 54 can be distributed and compacted within thecavity 40 of thelubrication box 108. During the compaction process, due to the speed of thepiston 48, and the gap between the side edge of thepiston 48 and the inner side of theside walls 36, shavingaid 30 particles are often stirred during the compaction process. A vacuum (not shown) can be provided to remove any portion of shavingaid 30 that is not compacted during the ultrasonic compaction process. - Once the shaving aid layer(s) 50, 52, 54 are compacted within the
first portion 28 of thelubrication box 108, thesecond portion 32 of thelubrication box 108 is placed on the opening of thecavity 40 of thefirst portion 28 of thelubrication box 108 and affixed. Thelubrication box 108 is then affixed, directly or indirectly, to theframe 104 of the shavingcartridge 102 such that the skin-engaging elements are, or can be, in contact with the user's skin during normal shaving. In some embodiments, thelubrication box 108 is removable and replaceable on theframe 104 of the shavingcartridge 102. - In use, the shaving
cartridge 102 is affixed to ahandle 10 and a user wets the shavingcartridge 102. The water enters the at least twoholes 38 of thelubrication box 108 and mixes with the shavingaid 30. The shavingaid 30, when wet, typically expands, filling at least a portion of thegap 42 within thelubrication box 108. Simultaneously, a portion of the shavingaid 30 dissolves in the water, and exits through the at least twoholes 38. The shavingcartridge 102 is then put into contact with the user and drawn across the skin. The blade(s) 106 of the shavingcartridge 102 shave the hair as the now-dissolvedshaving aid 102 is distributed on the skin, providing a benefit. - Only some embodiments of the present invention have been illustrated in the drawings, but it should be pointed out that many other modifications are conceivable within the scope of the following claims.
Claims (19)
- A lubrication box, comprising:- a first portion (28) of the lubrication box (108), the first portion (28) having a skin-engaging surface (34) and at least one sidewall (36), the skin-engaging surface (34) and the at least one side walls (36) forming a cavity (40),- at least two holes (38) extending through the skin-engaging surface (34) of the first portion (28),- a shaving aid material (30,50,52,54) disposed into the cavity (40), the shaving aid material (30) at least partially filling at least one of the holes (38) in the skin-engaging surface (34) and at least a portion of the cavity (40), and- a second portion (32) of the lubrication box (108), the second portion (32) being attached to the first portion (28) such that the cavity (40) is substantially closed,
characterized in that- a gap (42) exists in the cavity (40) between the shaving aid material (30,50,52,54) and the second portion (32) of the lubrication box (108) to permit the shaving aid material (30,50,52,54) to expand during normal use. - The lubrication box of claim 1, wherein the skin-engaging surface (34) is generally rectangular.
- The lubrication box of claim 1 or 2, wherein the skin-engaging surface (34) includes at least five holes (38).
- The lubrication box of any one of claims 1 to 3, wherein the skin-engaging surface (34) includes at least ten holes (38).
- The lubrication box of claim 4, wherein the skin-engaging surface (34) includes at least fifteen holes (38).
- The lubrication box of any one of claims 1 to 3, wherein holes (38) are aligned in a single row.
- The lubrication box of any one of claims 1 to 6, wherein the shaving aid material (30,50,52,54) includes a first layer (50) of shaving aid material (30,50,52,54) that at least partially fills at least one hole (38), as well as at least a portion of the cavity (40) of the first portion (28) of the lubrication box (108).
- The lubrication box of claim 7, wherein the shaving aid material (30,50,52,54) includes a second layer (52) of shaving aid material (30,50,52,54) that is located in the cavity (40) of first portion (28) of the lubrication box (108).
- The lubrication box of claim 8, wherein the second layer (52) is directly adjacent the first layer (50) of shaving aid material (30,50,52,54).
- The lubrication box of claim 7 or 8, wherein the first and second layers (50,52) of shaving aid material (30,50,52,54) have substantially the same chemical composition or different chemical compositions.
- The lubrication box of any one of claims 8 to 10, wherein the first and second layers (50,52) of shaving aid material (30,50,52,54) are provided in substantially the same amounts or in unequal amounts.
- The lubrication box of any one of claims 8 to 11, wherein the shaving aid material (30,50,52,54) includes a third layer (54) of shaving aid material (30,50,52,54) that is located in the cavity (40) of first portion (28) of the lubrication box (108).
- The lubrication box of claim 12, wherein the third layer (54) of shaving aid material (30,50,52,54) is directly adjacent the second layer (52) of shaving aid material (30,50,52,54).
- The lubrication box of any one of claims 8 to 13, wherein at least one layer of shaving aid material (30,50,52,54) is a different color than at least one other layer of shaving aid material (30,50,52,54).
- The lubrication box of any one of claims 1 to 14, wherein the second portion (32) includes at least one support structure that is in close proximity to or in direct contact with the shaving aid material (30,50,52,54).
- A method of making a lubrication box, the method comprising the steps of:- providing a first portion (28) of the lubrication box (108), the first portion (28) having a skin-engaging surface (34) and at least one sidewall (36) that form a cavity (40), the skin-engaging surface (34) having at least two holes (38) therethrough,- distributing a first amount of shaving aid material (30,50,52,54) into the cavity (40) of the first portion (28) of the lubrication box (108),- ultrasonically compressing the first amount shaving aid material (30,50,52,54) to form a first layer (50) of shaving aid material (30,50,52,54) such that the first layer (50) fills at least a portion of one of the holes (38),- providing a second portion (32) of the lubrication box (108) that covers an open end of the cavity (40) of the first portion (28) such that a gap (42) remains between the ultrasonically compressed shaving aid material (30,50,52,54) and an inner surface of the second portion (32) of the lubrication box (108),and- affixing the second portion (32) of the lubrication box (108) to the first portion (28) of the lubrication box (108).
- The method of making a lubrication box of claim 16, wherein the step of providing a first portion (28) of the lubrication box (108) includes molding the first portion (28) of a polymeric material.
- The method of making a lubrication box of claim 16, wherein the method includes additional steps of distributing a second amount of shaving aid material (30,50,52,54) into the cavity (40) of the first portion (28) of the lubrication box (108) onto the ultrasonically compressed first layer (50), then ultrasonically compressing the second amount shaving aid material (30,50,52,54) to form a second layer (52) of shaving aid material (30,50,52,54) that is adjacent to the first layer (50) of shaving aid material (30,50,52,54) in the cavity (40) such that the second layer (52) fills at least a portion of the cavity (40).
- The method of making a lubrication box of claim 18, wherein the method includes additional steps of distributing a third amount of shaving aid material (30,50,52,54) into the cavity (40) of the first portion (28) of the lubrication box (108) onto the ultrasonically compressed second layer (52), then ultrasonically compressing the third amount shaving aid material (30,50,52,54) to form a third layer (54) of shaving aid material (30,50,52,54) that is adjacent to the second layer (52) of shaving aid material (30,50,52,54) in the cavity (40) such that the third layer (54) fills at least a portion of the cavity (40).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10770920T PL2488330T5 (en) | 2009-10-16 | 2010-10-15 | Lubrication box for a wet shaving implement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27914809P | 2009-10-16 | 2009-10-16 | |
PCT/US2010/052776 WO2011047221A1 (en) | 2009-10-16 | 2010-10-15 | Lubrication box for a wet shaving implement |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2488330A1 EP2488330A1 (en) | 2012-08-22 |
EP2488330B1 true EP2488330B1 (en) | 2015-07-29 |
EP2488330B2 EP2488330B2 (en) | 2018-05-02 |
Family
ID=43402101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10770920.6A Active EP2488330B2 (en) | 2009-10-16 | 2010-10-15 | Lubrication box for a wet shaving implement |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2488330B2 (en) |
CN (1) | CN102712093A (en) |
AU (1) | AU2010306724B2 (en) |
PL (1) | PL2488330T5 (en) |
WO (1) | WO2011047221A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2625011A1 (en) * | 2009-10-21 | 2013-08-14 | Eveready Battery Company, Inc. | Lubrication box for a wet shaving implement |
JP2013538670A (en) | 2010-10-15 | 2013-10-17 | ザ ジレット カンパニー | Method of manufacturing skin engaging member |
JP5746354B2 (en) * | 2010-10-21 | 2015-07-08 | エバレデイ バツテリ カンパニー インコーポレーテツド | Lubrication box for wet shaving equipment |
EP2875917A1 (en) | 2013-11-22 | 2015-05-27 | Koninklijke Philips N.V. | Hair cutting appliance and blade set |
RU2651456C1 (en) | 2014-04-03 | 2018-04-19 | Дзе Жиллетт Компани Ллс | Shaving cartridge for hair removal |
US10682778B2 (en) | 2014-11-26 | 2020-06-16 | The Gillette Company Llc | Skin engaging member comprising ethylene vinyl acetate |
US20170334082A1 (en) | 2016-05-18 | 2017-11-23 | The Gillette Company Llc | Skin Engaging Member Comprising Ethylene Vinyl Acetate |
BR112019009754B1 (en) | 2016-11-17 | 2022-11-22 | The Gillette Company Llc | SKIN CONTACT MEMBERS COMPRISING ETHYLENE VINYL ACETATE AND A FRAGRANCE |
US11235485B2 (en) | 2019-04-23 | 2022-02-01 | Bic Violex S.A. | Shaving aid for retaining elements |
US11872711B2 (en) | 2019-05-10 | 2024-01-16 | The Gillette Company Llc | Lubricating member for razor cartridges |
EP3821753A1 (en) * | 2019-11-12 | 2021-05-19 | Koninklijke Philips N.V. | Personal care device |
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US4170821A (en) | 1977-12-02 | 1979-10-16 | Warner-Lambert Company | Razor cartridges |
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US4624051A (en) * | 1984-12-07 | 1986-11-25 | The Gillette Company | Shaving unit |
JPH0349794A (en) * | 1989-07-15 | 1991-03-04 | Kaijirushi Hamono Kaihatsu Center:Kk | Fixing method for shaving aid to razor and razor with shaving aid |
US5711076A (en) | 1996-03-27 | 1998-01-27 | The Gillette Company | Shaving system with improved guard structure |
US5956848A (en) * | 1997-02-27 | 1999-09-28 | The Gillette Company | Shaving system |
US7178241B1 (en) * | 2000-05-22 | 2007-02-20 | Eveready Battery Company, Inc. | Lubricating shaving assembly |
JP2005515867A (en) * | 2002-01-30 | 2005-06-02 | エヴァレディ・バッテリー・カンパニー・インコーポレイテッド | Razor with deformable shaving aid discharge device and method for discharging shaving aid |
US7574802B2 (en) * | 2003-06-09 | 2009-08-18 | Eveready Battery Company, Inc. | Shaving aid dispensing device |
US6925716B2 (en) * | 2003-12-04 | 2005-08-09 | Eveready Battery Company, Inc. | Shaving apparatus |
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2010
- 2010-10-15 CN CN2010800573291A patent/CN102712093A/en active Pending
- 2010-10-15 WO PCT/US2010/052776 patent/WO2011047221A1/en active Application Filing
- 2010-10-15 EP EP10770920.6A patent/EP2488330B2/en active Active
- 2010-10-15 PL PL10770920T patent/PL2488330T5/en unknown
- 2010-10-15 AU AU2010306724A patent/AU2010306724B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
EP2488330A1 (en) | 2012-08-22 |
AU2010306724B2 (en) | 2016-08-11 |
PL2488330T3 (en) | 2016-01-29 |
CN102712093A (en) | 2012-10-03 |
WO2011047221A1 (en) | 2011-04-21 |
AU2010306724A1 (en) | 2012-05-17 |
EP2488330B2 (en) | 2018-05-02 |
PL2488330T5 (en) | 2018-10-31 |
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