CN1104312C - Skin engaging member - Google Patents

Skin engaging member Download PDF

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Publication number
CN1104312C
CN1104312C CN95196527A CN95196527A CN1104312C CN 1104312 C CN1104312 C CN 1104312C CN 95196527 A CN95196527 A CN 95196527A CN 95196527 A CN95196527 A CN 95196527A CN 1104312 C CN1104312 C CN 1104312C
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China
Prior art keywords
shave
box
polyethylene glycol
agent
auxiliary agent
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Expired - Fee Related
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CN95196527A
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CN1167457A (en
Inventor
M·M·茨恩
尹玉岭
F·E·巴迪恩
T·T·恩都
B·A·罗杰斯
L·K·里姆
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Gillette Co LLC
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Gillette Co LLC
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Priority claimed from US08/497,194 external-priority patent/US6298558B1/en
Application filed by Gillette Co LLC filed Critical Gillette Co LLC
Publication of CN1167457A publication Critical patent/CN1167457A/en
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Publication of CN1104312C publication Critical patent/CN1104312C/en
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    • 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
    • B26B21/443—Lubricating strips attached to the razor head

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cosmetics (AREA)
  • Finger-Pressure Massage (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Seal Device For Vehicle (AREA)
  • Massaging Devices (AREA)

Abstract

This invention relates to an improved skin engaging member (64) for use in razor blade cartridge assemblies and shaving systems of the wet shave type. In accordance with one aspect of the invention, there is provided a two-component, control-release shaving device consisting of (a) a sheath layer (72) made from thermoplastic resins with openings therein and (b) a core region (70) containing internal shaving aids. Potentially, the device can maintain surface appearance, control-release the shaving aids, minimize the degradation of the shaving aids, and prevent the shaving aids from being trapped in a strip. Furthermore, the addition of low-melt additives to the shaving aids becomes feasible and the compatibility between the shaving aids and the shaving aid carrier such as polystyrene in the lubricating strip composite becomes less critical.

Description

Comprise the box of having a shave that the skin engaging member that the auxiliary agent of having a shave uses is provided
The present invention relates to be used for shaver boxlike assembly and the wet formula of scraping have a shave system improvement skin engaging member.The present invention mainly has been to provide the cap and/or the protective facing of contact skin, and they have the structure that can discharge the auxiliary agent of having a shave when shaver dragged skin.The suitable auxiliary agent of having a shave comprises lubricant, beard softening agent, shaver cleaning agent, medicament, enamel or its composition.The invention still further relates to the new method of production skin engaging member of the present invention.
In the wet formula of scraping is had a shave system, some factors, for example shaver cross skin frictional resistance, cut off the required power of hair and all can cause to a certain degree the sense of discomfort of having a shave the stimulation of original cutaneous lesion.Being accompanied by the have a shave sense of discomfort of system and other problem of wet type can be coated on the skin by the auxiliary agent of will having a shave and alleviate.Can be before having a shave, apply the auxiliary agent of having a shave in the process of having a shave or after having a shave.Adopt precoating or after be coated with the auxiliary agent of having a shave and can follow some problems of generation.The auxiliary agent of having a shave of precoating can evaporate or take away from the position that applies owing to the reciprocating stroke of shaver makes it.After the auxiliary agent of having a shave that is coated with in the process of having a shave, be not present on the skin, like this, they can not prevent undesirable influence with regard to being coated with too lately.Precoating and after be coated with the auxiliary agent of having a shave and all can make the process of having a shave increase other step.
Existing some of the recommendations propose, to have a shave auxiliary agent for example lubricant, beard softening agent, shaver cleaning agent, medicament, enamel or its composition pack in the shaver, in the molded polymeric element that the auxiliary agent of for example will having a shave leaves in the groove of shaver, the auxiliary agent of will having a shave directly is included in one or more shavers, adopt the mode of the bonding assistant composition of will having a shave to be fixed on the shaver and to adopt the machinery assistant composition of will having a shave to be connected with shaver.As United States Patent (USP) 4,170,821 (Booth) and 5,113, described in 585 (Rogers), with water miscible have a shave auxiliary agent for example polyethylene glycol oxide and water-insoluble base material for example polystyrene mix, to form the have a shave composition of auxiliary agent of insoluble polymer/solubility.Have a shave cutting edge or some cutting edge places in the system of having a shave near single blade or multitool sheet, said composition is contained in shaver and the box structure of having a shave on.When contacting with water, the water miscible auxiliary agent of having a shave can leach from composition and be coated on the skin.Preceding when having a shave several times above-mentioned composition tend to discharge a large amount of auxiliary agents of having a shave, and the auxiliary agent of having a shave when having a shave subsequently reduces significantly.In addition, have the relatively large auxiliary agent of having a shave (80% (weight) at the most) and lower, when assembling and use, be easy to mechanical failure than the extruding composition intensity of the insoluble base material of low amounts of water (being low to moderate 20% (weight)).Along with the consumption that increases insoluble base material can make mechanical strength be improved.Yet such raising can reduce the releasability of the promoter material of having a shave.
The lubricated band of commodity, particularly as United States Patent (USP) 4,170, lubricated the taking to that the polyethylene glycol oxide lubricant content described in 821 (Booth) and 5,113,585 (Rogers) is high toward performance depreciation after use.In the process of having a shave, leaching rate changes, and nearly 50% polyethylene glycol oxide is trapped in the lubricated band usually.The selection of polyethylene glycol oxide carrier (being water-insoluble base material) is confined to have low melting point or softening point and at least can the part carrier miscible with polyethylene glycol oxide.In addition, owing to should lubricated band be to make being about under 180 ℃ the high temperature, therefore, some additives for example flavouring agent and plasticizer all be difficult to add in the lubricated band.
Be presented to Etheredge on October 10th, 1989, the United States Patent (USP) 4,872,263 of III discloses a kind of by the lubricating component that adopts the impregnated porous matrix of specific acid soap to form.Adopt water-insoluble porose sheet material to cover on the impregnated matrix, prevent that as possible the lubricant erosion from providing gentle " massage " effect too soon and to skin.This class lubricating component does not obtain the coml success as yet.Owing to need to assemble in addition the sheet structure that covers on the matrix, thereby the producing cost costliness of this class lubricating component.When being fixed on the razor case with binding agent, they are toward contact meeting swelling and delamination.In addition, the porous matrix of this softness be not suitable for the mechanical means of economy will lubricate the band be fixed on the razor case.
The objective of the invention is provides reasonable quantity and the constant auxiliary agent of having a shave to the user in the process of having a shave, this providing (or release) speed quite stable when repeatedly using (having a shave).
We confirm that the parts of having a shave of making bi-component, control release are feasible, and these parts are by being made up of with the internal layer that contains the auxiliary agent of having a shave the outer surface layer in some holes.Using the potential advantage of this parts is 1) can keep uniform appearance, 2) reach zero level release profiles after having a shave for 1-4 time near the auxiliary agent of having a shave, 3) degraded of material is minimized, 4) make the promoter material of having a shave that is trapped in these parts minimize 5) a kind of auxiliary agent parts and/or 6 of having a shave that are easy to produce are provided) provide a kind of easily and the auxiliary agent parts of having a shave of the shaver boxlike system integration.Above-mentioned and other purpose of the present invention is from hereinafter can obviously finding out.
According to an aspect of the present invention, the skin engaging member that provides a kind of bi-component, control to discharge, it make by (a) thermoplastic resin its on the core that the sheath in some holes arranged and (b) contain the auxiliary agent of having a shave form.This skin engaging member can be the shape of band, shaver protective cover, shaver cap, razor socket or the broach shell that shaves, it can be by (1) coextrusion or double-colored (being bi-component) molding, or (2) extrude respectively or the method for molded surface layer and have a shave auxiliary agent and then assembling is made.These parts can keep appearance, control to discharge the auxiliary agent of having a shave, the degraded of the auxiliary agent of having a shave is minimized and the auxiliary agent that can prevent to have a shave is trapped within the skin engaging member.In addition, it is feasible that low-melting additive is added in the auxiliary agent of having a shave, thus in the lubricated band composition have a shave auxiliary agent with have a shave the auxiliary agent carrier for example the compatibility of polystyrene just become not too crucial.
Fig. 1 is the perspective view of razor assembly of the present invention;
Fig. 2 is the profile along 2-2 line intercepting among Fig. 1;
Fig. 3 is the profile of another kind of razor assembly of the present invention;
Fig. 4 is the enlarged perspective of skin engaging member of the present invention;
Fig. 5 is the profile along 5-5 line intercepting among Fig. 4;
Fig. 6 is the profile of the skin engaging member 42 that can see in Fig. 2;
Fig. 7 is the generalized section of extrusion die that is applicable to the skin engaging member of production drawing 3;
Fig. 8-the 11st, the enlarged perspective of some skin engaging members that the present invention is other;
Figure 12 is that the auxiliary agent release rate of having a shave drawn by the lubricated band of routine and lubricated band comparison of the present invention is to the have a shave figure of number of times of theory.
Referring to these accompanying drawings, the sub-assembly 10 of having a shave shown in Fig. 1 and Fig. 2 comprises by resistance to impact The end of polystyrene molding or base member 12, it comprises in order to the shave whole coupling groove of handle of a knife of connection Structure 14 contacts the protection structure 16 of the surface layer 18 of skin with the laterally extending front portion of restriction. Present Place the preposition blade 20 of steel with sharp keen blade 22 on 12 the upper surface, have sharp keen blade The rearmounted blade 24 of 26 steel and make blade 20 and 24 maintenances aluminium backing spare 28 spaced apart from each other. Cap spare 30 is formed by the impact resistant polystyrene molding, and it has the end wall 36 that restriction is given prominence to forward Between laterally extending rear portion contact skin surface layer 34 and have the blade cutting edge of being placed on 26 after The cap body of the front cutting edge 38 of face divides 32. Whole rivet portion 40 is from laterally extending cap body Divide 32 to downward-extension and pass the hole of blade 20 and 24, pad 28 and seat 12, with cap 30, cutter Sheet 20,24 and pad 28 fixing present 12 on. Be bonded and fixed on the surface layer 34 of contact skin Be skin engaging member 42.
The sub-assembly 50 of having a shave that is shown among Fig. 3 is United States Patent (USP)s 4,586, institute among 255 (Jacobson) The type of showing, this patent is incorporated herein by reference, and comprises having anterior 54 and rear portion 56 Entity 52. Flexibly be fixed on the entity 52 is guard member 58, preposition component of the blade 60 and Rearmounted component of the blade 62. To be the assistant composition of having a shave of elongated insert 64 shapes by rubbing Wiping power is locked in the perforate 66 of aft section 56.
Fig. 4-6 and Fig. 8-11 usually described several different schemes of the present invention. Used herein Term " core " refer to the inside of observable skin engaging member on section. This core is logical Often be to run through skin engaging member along axle. This axle needs not to be central shaft. Core among the figure is all with numbering 70 expressions. Embodiment of the present invention have a core at least. Term used herein " sheath " Refer to the outer cover on the core 70. Sheath among each figure is all to number 72 expressions.
The skin engaging member that bi-component of the present invention, control discharge is made up of the oversheath around inner core, and wherein said core contains have a shave auxiliary agent for example water-soluble polymer and additive.The surface layer 74 of contact skin can be the insoluble layer with inherent perforate, or soft layer for example in use can become the commodity band (polyethylene glycol oxide/polystyrene) of porous.
Referring again to accompanying drawing, particularly Fig. 3-5 there is shown elongated skin engaging member 64.Parts 64 have the surface layer 74 of contact skin and elongated insertion parts 76.As shown in Figure 3, this insertion parts 76 is designed to by friction lock in perforate 66.In addition, skin engaging member also comprise by sheath 72 around the core that contains the auxiliary agent of having a shave 70.This sheath comprises at least one perforate so that the auxiliary agent of will having a shave is discharged on the skin.Preferred this sheath comprises equably along about 3-30 the hole that the surface layer 74 that contacts skin distributes, most preferably 10-15 hole.The diameter in hole changes with the selected specific auxiliary agent of having a shave: however we have observed optimal results is that bore dia is about 0.020 to about 0.040 inch.Preferred bore dia is about 0.035 inch.Should be noted that it is circular that these holes need not to be, and the Kong Junke of Any shape satisfies the demand.Referring to for example Fig. 7-11.Hole area on the surface layer of contact skin is important.Preferred hole area is about 0.0005 to about 0.0250 square inch.When adopting the polyethylene glycol oxide lubricant of high-load in the core, preferred hole area is about 0.0125 square inch.Many auxiliary agents of having a shave tend to swelling when contacting with water.Be combined in the insoluble base material by the auxiliary agent of having a shave, can improve its swellbility to avoid producing aesthetic result beastly with these swellabilities.Most preferred pass formula is shown in Fig. 4-5.
This auxiliary agent of having a shave is selected from for example polyethylene glycol of polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylamide, hydroxypropyl cellulose, polyvinyl imidazole quinoline, polyethylene glycol, polyvinyl alcohol, poly hydroxy ethyl acrylate, silicone copolymer, sucrose stearate, vitamin E, soap class, surfactant-based, panthenol, aloe, plasticizer; The beard softening agent; Auxiliary lubricant is silicone oil, Teflon for example Polytetrafluorethylepowder powder (DuPont production) and wax; Essential oil is menthol, camphor, eugenol, cineol, safrole, 1-ally-3,4-methy-lene dioxy benzene and gaultherolin for example; Tackifier are HerculesRegalrez 1094 and 1126 for example; The inclusion complex of nonvolatile cool agent, emollient and cyclodextrin; Flavouring agent; Antipruritic/counter-stimulus material; Antimicrobial/keratolysis agent material is resorcinol for example; Anti-inflammatory agent is Candilla wax and glycyrrhetinic acid for example; Styptic is zinc sulfate for example; Surfactant is pluronic and iconol material for example; Compatilizer is styrene-b-EO copolymer for example; And composition.These auxiliary agents of having a shave can discharge with the improvement effect of having a shave from surface layer.These components are distributed in the whole core, and in addition, oversheath also can contain a spot of these auxiliary agent of having a shave.
The material of the preferably water miscible or water miscibility of the described auxiliary agent of having a shave; Yet,, also can mix as long as non-water-soluble additive can be taken out of along with water-soluble core component.
The auxiliary agent of preferably having a shave comprises the water-soluble polymer of lubricity.This class water-soluble polymer preferably includes at least 50% of core weight, and more preferably at least 60%.Preferred water-soluble polymer is the polyethylene glycol oxide that is commonly referred to POLYOX (can buy from Union Carbide Corporation) or ALKOX (can be from Meisei Chemical Works, Kyoto, Japan has bought).The molecular weight of these polyethylene glycol oxides preferably is about 100, and 000-6 1,000,000, is most preferably 300, and 000-5 1,000,000.Most preferred polyethylene glycol oxide comprises that mean molecule quantity that the mean molecule quantity of about 40-80% is about 500 ten thousand polyethylene glycol oxide (for example POLYOX COAGULANT) and about 60-20% is about the mixture of 300,000 polyethylene glycol oxide (for example POLYOX WSR-N-750).This polyethylene glycol oxide mixture also can advantageously contain the polyethylene glycol PEG-100 for example of the low-molecular-weight (that is MW＜10,000) of about at the most 10% (weight).
The auxiliary agent of having a shave also can advantageously comprise the inclusion complex of nonvolatile cool agent or emollient and cyclodextrin, and its consumption preferably is at most the about 25% of core weight, most preferably is 10-20%.
Nonvolatile cool agent refers to has physiological nice and cool effect and its volatility significantly to be lower than the reagent of menthol to skin.Preferred fixedness cool agent is, (951 thermogravimetric analyzers that for example adopt DuPont to produce when carrying out thermogravimetric analysis, per minute heats up 20 ℃), under 160 ℃ temperature, can keep at least 50% of its starting weight, more preferably under 160 ℃ temperature, can keep at least 80% of its starting weight, most preferably under 175 ℃ temperature, can keep at least 50% the sort of cool agent of its starting weight.
Available suitable cool agent comprises nonvolatile menthol analog for example lactic acid  ester, ethoxyacetic acid  ester,  ketone glycerine acetal, 3-1- oxygen base propane-1,2-glycol, carbonic acid ethyl 1- base ester, (1S, 3S, 4R)-and p--8-alkene-3-alcohol,  base 2-pyrrolidone-5-carboxylic acid ester, N-replace-and p- alkane-3-carboxyl acylamide is (as United States Patent (USP) 4,136, described in 163, this patent is incorporated herein by reference) for example comprise N-ethyl-p- alkane-3-carboxylic acid amides, have the acyclic carboxamides of following formula
Figure C9519652700091
R and R in the formula ", when it separated, hydrogen, C respectively did for oneself 1-C 5Alkyl or C 1-C 8Hydroxyalkyl and the total number of carbon atoms that provides are not more than 8, still, R when R is hydrogen " also can be the alkyl carboxyalkyl of 6 carbon atoms at the most; R ' and R ", when it lumped together, representative is the alkylidene of 6 carbon atoms at the most, thereby forms an azacyclo-, and this alkylidene chain can be chosen wantonly by oxygen and be interrupted; R 1Be hydrogen or C 1-C 5Alkyl; And R 2And R 3C respectively does for oneself 1-C 5Alkyl (United States Patent (USP) 4,153, in 679 this acyclic carboxamides has been done introduction, this patent is incorporated herein by reference) comprise for example N, 2,3-trimethyl-2-isopropyl butyramide, and ketal cool agent (described in WO 93/23005, this patent is incorporated herein by reference) for example comprise 1- ketone-/d-isomenthone glycerol ketals.
The suitable emollient that can be used in the cyclodextrin inclusion complexes comprises menthol, camphor, eugenol, cineol, safrole, 1-ally-3,4-methy-lene dioxy benzene and gaultherolin and above-mentioned menthol analog.Any suitable cyclodextrin all can be used to form inclusion complex, and the cyclodextrin that comprises alpha-cyclodextrin, beta-schardinger dextrin-, gamma-cyclodextrin and modification is HP-, methyl-beta-schardinger dextrin-and acetyl group-beta-cyclodextrin for example.Preferred cyclodextrin is beta-schardinger dextrin-and gamma-cyclodextrin.
When the auxiliary agent of having a shave comprises cyclodextrin inclusion complexes, that this core also can advantageously comprise is about at the most 10%, the preferred displacer of about 2-7% (weight), when contacting with water, this displacer can cement out emollient from inclusion complex, thereby promotes the release of emollient from core material in use.This displacer is a kind of can formation than the material of the more stable complex of the complex that forms with emollient with cyclodextrin, and therefore, it can cement out emollient from this complex when the auxiliary agent of having a shave contacts with water.Suitable displacer comprises surfactant, benzoic acid and some amine (for example urea).
Further details about above-mentioned cool agent, cyclodextrin inclusion complexes and displacer can be consulted following U.S. Patent application: 08/496 of submission on June 30 nineteen ninety-five, 860, be entitled as " have an assistant composition of having a shave of the inclusion complex of emollient and cyclodextrin " (Shaving AidComposite With An Inclusion Complex Of A Skin-Soothing Agent AndA Cyclodextrin); With submit to June 30 nineteen ninety-five 08/479,193, be entitled as " have an assistant composition of having a shave of fixedness cool agent " (Shaving Aid Composite With ANon-Volatile Cooling Agent).
This core comprise about 0% to about 50% (weight), preferred 0% to about 20% water-insoluble base material and about 50% to about 100% (weight), preferred about 80% to about 100% the auxiliary agent of having a shave.The insoluble polymer that is applicable to this matrix comprises for example nylon, ethane-acetic acid ethyenyl ester (EVA), polyethylene, polypropylene, polyurethane, polystyrene, polystyrene-butadiene, polyacetals, polyphenol/polystyrene blends (for example polymer of NOREL board) and composition thereof.
This sheath must have enough mechanical strengths and rigidity, so as for whole skin engaging member when beginning to make and a large amount of water-soluble materials after skin engaging member leaches, suitable mechanical strength is provided.Preferred this sheath comprises the insoluble polymer, particularly thermoplastic resin of at least 35%, most preferably at least 40% (weight).The thermoplastic resin that is applicable to this sheath comprises polystyrene, impact resistant polystyrene (polystyrene-butadiene), polypropylene, filled polypropylene, polyethylene, nylon, ethane-acetic acid ethyenyl ester and the admixture of 70% nylon/30% polyethylene glycol oxide, 60% polystyrene/40% polyethylene glycol oxide for example.Preferred resin is impact resistant polystyrene, polystyrene, ethane-acetic acid ethyenyl ester (EVA) and composition thereof.Except insoluble polymer, this sheath also can comprise some water-soluble polymers, polyethylene glycol oxide for example, and still, in order to keep the structural intergrity of sheath, its content is not more than about 65% (weight) usually, preferably less than 60% (weight).This sheath can be chosen wantonly and comprise for example lubricant or plasticizer, filler CaCO for example of additive 3With colouring agent TiO for example 2
In one embodiment of the invention, when forming, can produce the effect of indicating wear extent by diverse coloured material (for example Bai Se sheath and blue core) when sheath and core.By using, this core comes out from skin engaging member.Along with abundant use, the colour attaching area of in-core can leach.By checking release aperture along the surface layer of contact skin, for the user provides a kind of indication, the surface layer of promptly have a shave sub-assembly and/or contact skin has reached its useful life.In a preferred embodiment, this core is by indigo, FD﹠amp; The admixture of the polyethylene glycol oxide/polystyrene of C#2 dye coloring is formed, and sheath is made up of the nylon and/or the polystyrene that are coloured to white.
According to the present invention, for example Loctite Super Bonder 499, the retaining mechanism that adopts machinery, employing thermal weld or its combined method are fixed skin engaging member can to adopt adhesive.
This skin engaging member can be the band that is made by double-colored (bi-component) molding or coextrusion, or by extruding respectively or molding top layer and have a shave auxiliary agent and then assembling.Then, can or be engaged on the razor case this skin engaging member bonding.This skin engaging member also can be shaver cap, seat or the cover of making by double-colored molding.For example, 1) porose surface can by molding or double-colored molding make and 2) have the surface of guide groove to make by molding.Extrude with the coextrusion method be preferred because their required funds and skilled worker are less.When this skin engaging member of coextrusion, must be in the surface layer punching of contact skin.Adopt following any method that these holes are beaten on sheath: boring, laser, water-jet, engraving or acanthopore.Must under different extruder barrel temperature, process core and sheath so that the degraded of material is reduced to bottom line.For the functional additive that is easy to comprise liquid and powder mixes in the core, should consider double screw extruder as being the sub that is used to extrude with the single screw extrusion machine of coextrusion method.Sheath is suitable for having hard surface to moderate hardness most.
Preferred skin engaging member adopts coetrusion production, thereby on the surface layer 74 of contact skin a sheath is arranged at least.The character of the polymeric material of sheath and core and relative scale are like this, make skin engaging member still have enough intensity when beginning to make and after water-soluble material has leached in a large number, the amount of water-soluble material is enough to provide having a shave of effect auxiliary for example lubrication in total life expectancy of blade and some blades.The effect of sheath not only can provide additional rigidity but also measurable supply is had a shave auxiliary agent.At for example United States Patent (USP) 5,063,667; 5,095,619; With 5,113, in the conventional skin engaging member described in 585, a large amount of auxiliary agents of having a shave are trapped within the insoluble matrix.Concentration along with increasing the auxiliary agent of having a shave in the core can make it increase and spread and reach more effective transmission.In addition, also can provide certain additional mechanical intensity in the core if insoluble matrix added to.
Fig. 7 is along the generalized section that is applicable to bi-component extruder (or the coextrusion machine) length of producing skin engaging member of the present invention.By extrusion screw rod, hot melt or other means core material 80 is sent to and to be clamp-oned mould 81.In core import 82, meeting with the sheath material 86 of sending into sheath import 84 in the hole 83 of tight Shu Xin, can be observed this core and sealed by sheath material there on the cross section of mold materials runner.Then, entrapped core advances to mould outlet 85 places, and continuous skin engaging member can solidify at this place and/or shrink so that suitable size is provided.About the general discussion of coextrusion technology referring to Levi, Plastics Extrusion Technology Handbook, Industrial Press Inc., 168-188 page or leaf (1981).After continuous skin engaging member produces, this wire rod is sent to further processing, be retracted to suitable dimensions at this place and cut into the length that is suitable for being placed in the shaver box body usually.Can adopt blade cutting, laser or water-jet to realize cutting.The surface layer of contact skin of the present invention is rectangle normally, and its width is about 0.05 inch to about 0.1 inch, and length is about 1.2 inches.
The bi-component extruder can make core material process under lower temperature to reduce the degraded of material.For example, polyethylene glycol oxide can be lower than conventional band, promptly processes under the required temperature of the polyethylene glycol oxide in the lubricated band of insoluble matrix.Having a shave, auxiliary agent can for example polyethylene glycol oxide, polyethylene glycol and polyvinyl alcohol etc. be made by water-soluble polymer.Can easily for example spices, humidizer, vitamin E and plasticizer etc. add in the auxiliary agent of having a shave with additive.As long as additive can be taken out of by the perforate of surface layer, they also can be the water-insoluble materials.Though extrusion molding is preferred, also the core that contains the auxiliary agent of having a shave can be moulded or is extruded.
The leaching rate of auxiliary agent of having a shave depends on the thickness of surface layer, quantity and the shape and the surface texture (porous or non-porous) of perforate.This surface layer also can be made into dismountable so that the auxiliary agent of having a shave can be added in these parts in use.
The applicant thinks that the embodiment of equivalence is a part of the present invention.For example, the surface layer area and the adopted nonplanar surface layer pattern of possibility of the adopted non-rectangle of possibility (for example oval) contact skin.The present invention also pays close attention to these or other equivalent embodiment.The present invention and about the method for making and use will be conspicuous from following examples.
Embodiment 1-8
The have a shave core (internal layer) of auxiliary agent of listed containing in the table 1 for example is coextruded in the device with cross section shown in Fig. 7 under the temperature shown in the table greatly.After less than 2% contraction, the width that typically completes is 1/8 inch.These devices do not need other assembling.The coextrusion production line comprises two 3/4 " HBI System90 extruder (Haake production) and a coextrusion mould.The sheath of the skin engaging member after the coextrusion or outer by shown in the extruder barrel temperature under mixture make, and the core that contains the auxiliary agent of having a shave by shown in material make.It with diameter the pattern that 0.030 inch drill bit becomes hole drill in figure among Fig. 4.Become the finished product band that 13 holes are arranged on 1.25 inches long, every bands with the blade cutter cuts.
Typical processing conditions
Temperature (℃):
Section 12345
Extruder 1 (inside) 130 180 180 180 180
Extruder 2 (outside) 150 180 180 180 180
Rotor speed:
Extruder 1 42rpm
Extruder 248rpm
Linear velocity: be about 15-20 feet per minute clock
Table 1
1. outer 50% impact resistant polystyrene (Mobil 4324)
40% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000) (continuous Table I)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
Internal layer 88% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
2% green colourant, 2. outer 40% impact resistant polystyrenes (Mobil 4324)
50% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
Internal layer 88% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
2% green colourant, 3. outer 37% impact resistant polystyrenes (Mobil 4324)
53% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
Internal layer 90% polyethylene glycol oxide admixture: (continuous table 1)
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
4. outer 35% impact resistant polystyrenes in 10% polyethylene glycol MW=4500 (Dow 4500) (Mobil 4324)
50% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
8% polyethylene glycol MW=4500 (Dow 4500)
7% Salsorb 88, crosslinked Sodium Polyacrylate (Allied)
Internal layer 88% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
2% green colourant, 5. outer 33% impact resistant polystyrenes (Mobil 4324)
56% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
7% polyethylene glycol MW=4500 (Dow 4500)
4% Salsorb 88, crosslinked Sodium Polyacrylate (Allied)
Internal layer 90% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000) (continuous table 1)
(both are by Union Carbide Corp.Danbury, and CT produces)
6. outer 40% impact resistant polystyrenes in 10% polyethylene glycol MW=4500 (Dow 4500) (Mobil 4324)
50% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
Internal layer 73% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
15%  ketone glycerine acetal (Frescolat MGA)
2% green colourant, 7. outer 40% impact resistant polystyrenes (Mobil 4324)
50% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
Internal layer 78% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
10% N-ethyl-p- alkane-3-carboxylic acid amides (WS-3)
2% green colourant (continuous table 1) 8. outer 40% impact resistant polystyrene (Mobil 4324)
50% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500) internal layer 73% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
15% gamma-cyclodextrin/menthol inclusion complex
2% green colourant
Embodiment 9 and 10 contrasts:
According to United States Patent (USP) 5,113, the conventional method described in 585 (Rogers) prepares the traditional lubrication band that appearance and size is similar to Fig. 4-5.The prescription of this band is as follows: 9. 33.5% impact resistant polystyrene (Mobil 4324)
55% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
1.5% mixable additive and colouring agent the present invention:
Prepare lubricated band of the present invention according to the conventional method described in the embodiment 1-8.The prescription of this band is as follows: 10. outer 33.5% impact resistant polystyrene (Mobil 4324)
55% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
10% polyethylene glycol MW=4500 (Dow 4500)
1.5% mixable additive and colouring agent internal layer 85% polyethylene glycol oxide admixture:
3 parts of POLYOX WSR Coagulant (MW 5,000,000)
2 parts of POLYOX WSR N-750 (MW 300,000)
(both are by Union Carbide Corp.Danbury, and CT produces)
5% polyvinyl alcohol
8% polyethylene glycol MW=4500 (Dow 4500)
2% mixable additive and colouring agent
The weightlessness (butt) of these parts of monitoring in the process of testing of under some simulation laboratory's conditions, having a shave.We think that the test value under these laboratory conditions is fine with the mean value correlation of having a shave under field conditions (factors).These results such as Figure 12 describe.Shown in the figure, in embodiment 10 after having a shave for the 4th time, by the lubricant that transmits therapeutic dose near the zero level release profiles continuously.Yet the content that provides in embodiment 9 (contrast) is very low.

Claims (14)

1. box of having a shave, the skin engaging member that comprises blade and close described blade, described skin engaging member is included in the device that discharges the auxiliary agent of having a shave in the process of having a shave, it is characterized in that described skin engaging member comprises an elongate solid polymer jacket that contains water-insoluble polymer, described sheath has along the surface of the contact skin of its outer surface extension, with be integrated into described sheath and run through described sheath and extend axially and besieged internal solids polymer core, the solid that described core the contains 50%-100% weight auxiliary agent of having a shave, the described solid auxiliary agent of having a shave comprises water-insoluble polymer, wherein said sheath has a perforate at least on the surface of described contact skin, the described thus auxiliary agent of having a shave discharges in the process of having a shave.
2. the box of having a shave of claim 1, wherein said sheath also comprises at least 35% insoluble polymer, and described core comprises at least 50% water-soluble polymer.
3. the box of having a shave of claim 2, wherein said insoluble polymer comprises polystyrene, impact resistant polystyrene, polypropylene, filled polypropylene, polyethylene, nylon or ethane-acetic acid ethyenyl ester.
4. the box of having a shave of claim 3, wherein said core also comprises 0 to 20% water-insoluble matrix.
5. the box of having a shave of claim 4, wherein said water-insoluble matrix comprises nylon, ethane-acetic acid ethyenyl ester, polyethylene, polypropylene, polyurethane, polystyrene, polystyrene-butadiene, polyacetals or polyphenol/polystyrene admixture.
6. the box of having a shave of claim 5, wherein said sheath also comprises the water-soluble polymer less than 60%.
7. claim 1,2,4,5 or 6 the box of having a shave, wherein said water-soluble polymer comprises polyethylene glycol oxide.
8. the box of having a shave of claim 3, wherein said water-soluble polymer comprises polyethylene glycol oxide.
9. the claim 3 or 8 the box of having a shave, wherein said sheath and core are by fully differently painted.
10. the box of having a shave of claim 8, wherein said at least one perforate comprise that many to have area be 0.0005 to 0.0250 square inch perforate.
11. the box of having a shave of claim 8, wherein said at least one perforate comprise that 3 to 30 diameters are the hole of 0.5-1.0 millimeter (0.020 to 0.040 inch).
12. the box of having a shave of claim 8, wherein said core comprise at the most the nonvolatile cool agent of 25% (weight) or the inclusion complex of emollient and cyclodextrin.
13. the box of having a shave of claim 12, wherein said nonvolatile cool agent is selected from lactate, ethoxyacetic acid ester, ketone glycerine acetal, 3-1-oxygen base propane-1,2-glycol, carbonic acid ethyl 1-base ester, (1S, 3S, 4R)-p--8-alkene-3-alcohol, basic 2-pyrrolidone-5-carboxylic acid's ester, N-ethyl-p-
Alkane-3-carboxylic acid amides and N, 2,3-trimethyl-2-isopropyl butyramide and wherein emollient be selected from menthol, camphor, eugenol, cineol, safrole, 1-ally-3,4-methy-lene dioxy benzene, gaultherolin and above-mentioned nonvolatile cool agent.
14. the box of having a shave of claim 1, the wherein said auxiliary agent of having a shave comprises polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylamide, hydroxypropyl cellulose, the polyvinyl imidazole quinoline, polyethylene glycol, polyvinyl alcohol, poly hydroxy ethyl acrylate, silicone copolymer, sucrose stearate, vitamin E, the soap class, surfactant-based, panthenol, aloe, plasticizer, the beard softening agent, lubricant, polytetrafluorethylepowder powder, wax, menthol, eugenol, cineol, safrole, 1-ally-3,4-methy-lene dioxy benzene, gaultherolin, tackifier, nonvolatile cool agent, the inclusion complex of emollient and cyclodextrin, flavouring agent, antipruritic/counter-stimulus material, antimicrobial/the keratolysis agent material, anti-inflammatory agent, styptic, or compatilizer.
CN95196527A 1994-10-31 1995-10-24 Skin engaging member Expired - Fee Related CN1104312C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US33229394A 1994-10-31 1994-10-31
US08/332,293 1994-10-31
US08/497,194 1995-06-30
US08/497,194 US6298558B1 (en) 1994-10-31 1995-06-30 Skin engaging member

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CN1167457A CN1167457A (en) 1997-12-10
CN1104312C true CN1104312C (en) 2003-04-02

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JP (1) JP4011108B2 (en)
CN (1) CN1104312C (en)
AT (1) ATE178253T1 (en)
AU (1) AU686480B2 (en)
BR (1) BR9509453A (en)
DE (1) DE69508784C5 (en)
EG (1) EG20594A (en)
ES (1) ES2132745T3 (en)
IL (1) IL115690A (en)
MA (1) MA23705A1 (en)
MX (1) MX9703127A (en)
NZ (1) NZ296324A (en)
PL (1) PL180436B1 (en)
TR (1) TR199501342A2 (en)
WO (1) WO1996013360A1 (en)

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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
FR2793435B1 (en) * 1999-05-12 2001-08-03 Bic Rech Et Dev RAZOR HEAD COMPRISING AN SOLIDARITY ANTI-FRICTION ELEMENT OF A SOLE
US6301785B1 (en) 2000-02-18 2001-10-16 The Gillette Company Shaving aid strip for razor cartridge
WO2001060572A1 (en) 2000-02-18 2001-08-23 The Gillette Company Shaving aid strip for razor cartridge
US6298559B1 (en) * 2000-02-18 2001-10-09 The Gillette Company Shaving aid strip for razor cartridge
US6868610B2 (en) * 2001-11-15 2005-03-22 The Gillette Company Shaving razors and razor cartridges
DE10344564A1 (en) * 2003-09-25 2005-04-28 Braun Gmbh A dry shaving razor with a device for application of a solid with a sliding action, especially a powder, a housing, and a cutting head generally useful for shaving
US7727516B2 (en) 2006-02-28 2010-06-01 The Procter & Gamble Company Reduction of hair growth
US7581318B2 (en) * 2006-08-03 2009-09-01 Eveready Battery Company, Inc. Skin engaging device for a safety razor
US9604374B2 (en) * 2009-10-21 2017-03-28 Edgewell Personal Care Brands, Llc Method of making a lubrication box for a wet shaving implement
US20110126413A1 (en) * 2009-12-02 2011-06-02 Andrew Anthony Szczepanowski Razor cartridge components with indicia
US20130042482A1 (en) * 2011-08-16 2013-02-21 Valerie Jean Bradford Skin Engaging Member Comprising An Anti-Irritation Agent
US9889571B2 (en) * 2015-01-08 2018-02-13 The Gillette Company Llc Razor cartridge with a lubrication member having a printed support structure
US20220071886A1 (en) * 2019-01-15 2022-03-10 Bic-Violex S.A. Skin engaging member for razor cartridge
EP3930668A1 (en) * 2019-02-28 2022-01-05 BIC Violex S.A. Skin engaging member for razor cartridge comprising skin active ingredient
CN110181562A (en) * 2019-06-26 2019-08-30 温州市日电电器有限公司 A kind of razor tool tip elastic piece structure
CN110181564B (en) * 2019-06-26 2021-09-28 温州市日电电器有限公司 Shaver head
CN112123383B (en) * 2020-09-15 2021-05-14 江苏好客日用品科技有限公司 Shaver head, equipment for assembling shaver head and assembling method of equipment

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ES2132745T3 (en) 1999-08-16
CN1167457A (en) 1997-12-10
MA23705A1 (en) 1996-07-01
IL115690A (en) 1999-11-30
IL115690A0 (en) 1996-01-19
AU686480B2 (en) 1998-02-05
TR199501342A2 (en) 1996-06-21
EG20594A (en) 1999-09-30
WO1996013360A1 (en) 1996-05-09
PL180436B1 (en) 2001-02-28
ATE178253T1 (en) 1999-04-15
PL319976A1 (en) 1997-09-01
AU4009295A (en) 1996-05-23
EP0790883B1 (en) 1999-03-31
JP4011108B2 (en) 2007-11-21
DE69508784D1 (en) 1999-05-06
DE69508784T2 (en) 1999-09-16
MX9703127A (en) 1997-06-28
JPH10507950A (en) 1998-08-04
BR9509453A (en) 1998-01-06
DE69508784C5 (en) 2012-01-26
EP0790883A1 (en) 1997-08-27
NZ296324A (en) 1998-09-24

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