CA1328989C - Process to produce a hydrophilic coating on a molded part and a razor produced by applying this process - Google Patents

Process to produce a hydrophilic coating on a molded part and a razor produced by applying this process

Info

Publication number
CA1328989C
CA1328989C CA000565856A CA565856A CA1328989C CA 1328989 C CA1328989 C CA 1328989C CA 000565856 A CA000565856 A CA 000565856A CA 565856 A CA565856 A CA 565856A CA 1328989 C CA1328989 C CA 1328989C
Authority
CA
Canada
Prior art keywords
razor
solution
water
blade
hardened
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.)
Expired - Fee Related
Application number
CA000565856A
Other languages
French (fr)
Inventor
Wolfgang Althaus
Jochen Thone
Helmut Ritter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilkinson Sword GmbH
Original Assignee
Wilkinson Sword GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wilkinson Sword GmbH filed Critical Wilkinson Sword GmbH
Application granted granted Critical
Publication of CA1328989C publication Critical patent/CA1328989C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00Razors 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
    • B26B21/40Details or accessories
    • B26B21/44Means integral with, or attached to, the razor for storing shaving-cream, styptic, or the like
    • B26B21/443Lubricating strips attached to the razor head
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/04Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a surface receptive to ink or other liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00Polymeric substrate or laminate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00Metallic substrate

Abstract

Abstract The present invention relates to a process for forming and applying a hydrophilic coating that is extremely slippery when wet to a molded plastic or metal part, in particular a razor or a razor-blade unit, in which a solution that contains a water-soluble polymer, in particular polyvinylpyrrolidon, is applied to the molded part and there hardened, as well as the razor that is of plastic such as polystyrene or ABS or metal, this being provided with a device that increases its gliding ability. The invention also proposes that the solution that is applied to the molded part consist of the water-soluble polymer, in particular poly-N-vinylpyrrolidon or a copolymer thereof, one or a plurality of radically polymerisable vinyl monomers, and a photoinitiator that decomposes into radicals when irradiated, and wherein the solution that is applied is hardened by exposure to ultraviolet radiation.

Description

13289~9 The present invention relates to a process for forming and applying a hydrophilic coating that is extremely slippery when wet to a molded plastic or metal part, in particular a razor or a razor-blade unit, in which a æolution that contains a water-soluble polymer, in particular polyvinylpyrrolidon, is applied to the molded part and there hardened. In addition, the present invention also relates to a razor or razor-blade unit with at least one blade that is held of a blade bed and, adjacent to this blade, a surface that glides over the user's skin during the shaving process, in particular a cap of a plastic such as polystyrene or ABS or of metal, which is provided with a device that increases its gliding ability.
DE-OS 28 51 457 describes a razor of plastic, in which --between a razor-blade bed and a cap--there is at least one razor blade. The head of the razor has an integral, fixed and water-soluble shaving aid. The shaving aid is in the form of a strip of the solid but water-soluble material, with the strip being arranged in a position adjacent to the razor blade, and being joined to neither the blade bed nor the cap. In particular, a microencapsulated silicon oil, polyethylene oxide, an non-ionic polyacrylamide or a polysaccharide is provided as water-soluble material. This is intended to ensure a perfected wet shave in that the shaving aid, in contact with the wet skin or, optionally, by wetting the head of the razor, is reapplied to the skin during each shave tRasiervorgang--perhaps this is better rendered as "shaving stroke"--Tr.], so that its gliding ~&

;; :

properties act continuously during the duration of the shaving process.
In this known razor, it is a disadvantage that the substance that acts as a lubricant is dissolved out of the carrier and builds up as a film on the user's skin. Thus, there is a danger that this could irritate the skin, and can also make it necessary to wash this film, that dries on the skin that has already been shaved: this can be difficult, depending on the degree of hardness of the water that is available. Furthermore, the construction of the razor, with a plastic strip arranged within a recess, is costly and it is not possible to shift the strip into the effective vicinity of the cutting edge of the razor blade. For this reason, the known glide strip can only be positioned in that location on the razor that is unfavourable for achieving the desired usage characteristics.
DE-PS 28 28 617 describes a moulded body of a polymer substrate and a coating that is applied to this substrate, in which this consists of polyvinylpyrrolidon-polyurethane-interpolymer. Various applications, such as contact lenses, catheters, peristaltic pump chambers, condoms, and the like, have been proposed for such a molded body, where a material such as polyurethane, an acrylic acid polyester, or a vinyl resin is desirable, which when wet has a coefficient of friction that is lower than is normally possible in such materials. Unlike the situation in medical technology, there are no such demands in connection with conventional razors, neither is it usual to use , ' ' : '. ':

~ .
,.~ . . . .

~`

materials of such a sort, in particular a polyurethane. More often, razors and razor-blade units are of polystyrene, the properties of which are in no way comparable. In particular, a coating that is applied according to DE-PS 28 28 617 would not adhere to polystyrene. Here, it is proposed that one apply the solution of a polyisocyanate to the substrate, and after evaporation of the solvent, one applies a solution of polyvinyl-pyrrolidon to the substrate that has been so treated, after which the solvent is evaporated in order to arrive at a polyvinylpyrrolidon-polyurethane-interpolymer. It is also a disadvantage in this process that such a formation of a coating is a time-consuming process, since the individual components are applied from diluted solutions, the solvents are evaporated slowly and free isocyanate groups are caused to react at elevated temperatures. If this complicated process was carried over to the production of razors, there would be a risk that strain cracks or deformation process would be caused. Finally, this process cannot be carried over for the production of razors because the solutions only consist to approximately lO to 15~ of substances that do not evaporate in the framework of the production process, so that only extraordinarily thin coatings can be obtained for the gliding coating. The thicknesses of the layers are extremely difficult to control, and application to rounded surfaces is extremely difficult, to say the least. In addition, regulation of the hardening process by evaporation must take place slowly and be carried out with great care in . . :
'~

. . .

1~28~89 order that the process takes place from the inside out, and so that no undesirable substances remain locked into the end product, only to dissolve out during the shaving process and remain on the skin.
It is the task of the present invention to so improve a process of the type described in the introduction hereto, and avoid the concomitant disadvantages, that the production of molded parts of plastic or metal, in particular of razors or razor-blade units or parts thereof, permits a greater degree of gliding ability when wet, such that the coating--even on - polystyrene or ABS or metal--adheres well, and can be applied and hardened in a short time. In particular, it is the task of the present invention to improve the gliding characteristics of a razor in the immediate vicinity of the blade in such a way ~;; that no substances, such as lubricants, are deposited on the user's skin.
According to the present invention, this task has been solved in that the solution that is to be applied to the molded part consists of the water-soluble polymer, in particular poly-N-vinylpyrrolidon or a copolymer of this, of one or a plurality of radically polymerisable vinyl monomers, and of a photoinitiator that decomposes into radicals when irradiated, ` and in that the applied solution is exposed to ultraviolet radiation in order to be hardened. The solution then hardens very rapidly to form a firmly bonded coating of controlled thickness and which, when wet, has a greatly reduced coefficient ;

;,,.,,.",, . ~ . - ~ - , . .

~328989 of friction when in contact with the skln.
Thus, according to one aspect, the inventlon provides a process of forming and applying a hydrophllic coating that ls extremely slippery when wet to a moulded part of plastlc or metal, directly or indirectly via a plastic film, which process comprises applying a solution that contains a water-soluble polymer to the moulded part and there hardened, wherein the solution that is applied to the moulded part consists of a water-soluble polymer, one or a plurality of radically polymerisable vinyl monomers and a photoinitiator that decomposes into radicals; wherein the solution that is applied i3 exposed to ultraviolet irradiation to be hardened and wherein the moulded part comprises a razor or razor-blade unit and said water-soluble polymer comprises poly-N-vlnyl-pyrrolidone or a copolymer thereof.
According to another aspect, the invention provides a razor or razor-blade unit with at least one razor blade that is secured to the blade bed and surface that is adjacent to the razor blade for passing over a user's skin and having a 5 to 1000 ~m thick coating layer of a mixture of water-soluble polymers, one or more radically polymerisable vinylmonomers and a photoinitator that decomposes into radicals on exposure to radiation, said coating layer being hardened by exposure to ultraviolet radiation.
It is preferred that the solution contain 0.1 to 90%-wt polyvinylpyrrolidone, in particular 5 to 30%-wt polyvinyl-pyrrolidone, relative to the vinyl monomer used. The mean molecular weight of polyvinylpyrrolidone can be of various values ;.~ ~, . .

' ~ :

-6a-ranging from 15,000 to 800,000 g/mol, preferably 200,000 to 500,000 g/mol.
Instead of using pure polyvinylpyrrolidone, which is particularly suitable, it is also possible to use copolymers of pyrrolidone with, for example, maleinates or acrylates in the framework of the present invention. In addition, other water-soluble polymers, such as polymers that contain polyvinyl~

i alcohol, polyacrylamide, polysaccharides or polyethylenoxide are suitable as additive.
s Within the context of the invention, suitable radically i polymerisable vlnyl monomers are preferably acrylic acid, meth-?, acrylic acid, and derivatives of these, as well as polyester resins that contain mixtures of styrene and maleic acid or fumaric , acid, respectively. Examples are acrylic acid esters or meth-;l acrylic acid esters that contain cyclic or open-chain ether groups, such as esters of simple or compound ethoxylated or propoxylated C1 - C20 alcohols, THF-carbinolacrylate or THF-carbinolmethacrylate, hydroxyalkylesters, such as 2-hydroxy-ethylacrylate, 2-hydroxyethylmethacrylate, 2-hydroxypropyl-acrylate, or 2-hydroxypropylmethacrylate, N,N-dimethylamino-2-hydroxyethylacrylate, N,N-dimethylaminoethyl-methacrylate, or salts thereof, such as N,N,N-trimethylammonium-i :r, ~

' ~' . . , . . , ;. : , 2-ethylmethylacrylate-chloride, also acrylamide, N-alkylacrylamide with 1 to 10 C atoms in the alkyl group, N-2-hydroxyethylacrylamide, N-2-hydroxypropylacrylamide or methacrylamide, N-2-hydroxyethylmethacrylamide, N-2-hydroxy-propylmethacrylamide, acrylonitrile, and methacrylonitrile.
; Other suitable polyester resin systems contain maleic acid, or fumaric acid, as well as, for example, phthalic acid, adipinic acid, sebacic acid and hydrophilic polyetherdiols such as diethylene glycol, oligoethlylene glycol with 3 to 1000 ethylene oxide block, oligopropylene glycol with 1 to 1000 propyleneoxide blocks, and ethylene glycol, butane diol, trimethylolpropane or ethoxylated trimethylolpropane ~ith 3 to 60 ethyleneoxide parts as well as ethoxylated and/or propoxylated trimethylolpropane with 0 to 60 propyleneoxide parts.
It is preferred that there be fractions of 0 to 80 %-wt, in particular 0.5 to 50%-wt of hydrophobic monomers in the hydrophilic vinylmonomer mixtures, such as methylmethacrylate, butylacrylate, ethylacrylate, cyclohexylacrylate or ethyl-hexylacrylate. Urethane-modified acryl- and methacryl esters can also be used, which are obtained in known manner, e.g., by conversion from 2-isocyanatoethylmethacrylate with various Cl to C6 alcohols, in particular methanol, ethanol, or butanol, alkoxyalcohols, such as ethoxylated and/or propoxylated methyl-, ethyl-, propyl-, butyl-, or hexyl- or ethylhexylalcohols, respectively, or by conversion from hydroxyalkylacrylates or !, ,.
',' . ': .
'" '~' ~ , '~ . ~ . ,.
,~
.

hydroxyalkylmethacrylates with aromatic or aliphatic mono-, di-or triisocyantates, such as hexamthylenediisocyanate, lysin-methylesterdiisocyante, toluoldiisocyante, MDI
diphenylmethanediisocyanate, or an adduct of trymethylolpropane and 3 mol toluoldiisocyanate. In addition, N-vinylpyrrolidon can be used in the hydrophilic vinylmonomer mixture; this is particularly well-suited as an additive in the context of the present invention.
Even though multifunctional vinyl compounds are not absolutely essential in the context of the present invention, the addition in a quantity of O to 8~%-wt, preferably up to 50%-wt leads to qualitatively good results. Examples of suitable cross-linking components are butanediolbisacrylate, 1,6-hexanediolbisacrylate, oligoethyleneglycol-bisacrylate with 1 to 400 ethyleneglycol units, acrylates or methacrylates of trimethylolpropane, ethoxylated and/or propoxylated trimethylolpropane. Bis-(2 hydroxyethyl) bisphenol-A-dimethyl-acrylate or an adduct of (meth)acrylic acid and bisphenol-A-diglycide ether or urethane modified biacrylates is also suitable.
The above mixtures that are to be applied to the molded part can be produced with a solvent that has a favourable effect on the workability of the system. Suitable solvents are acetone, methyleneketone, methanol, ethanol, propanol, butanol ethylacetate, butylacetate, methylene chloride, toluol, THF, water, and mixtures thereof.

, : :: . .
. ., ;i :

g Photoinitiators can be used in the vinylmonomer mixture in an effective quantity of 0.01 to 5%-wt, in particular 0.1 to 5%-wt, and preferably in a quantity of 0.3 to 1%-wt. When this is done, compounds that decompose into radicals under ultraviolet radiation are used. Thus, effective photinitiators are, for example, the known compounds benzophenon, acetophenon, fluorenon, benzaldehyde, propiophenon, anthrachinon, carbazole, 3- or 4-methylacetophenon, 3- or 4-methoxybenzophenon, 4,4' dimethoxybenzophenon, allylacetophenon, 2.2'-diphenoxyacetophenon, benzoin, methylbenzoinether, ethylbenzoinether, propylbenzoinether, benzoinacetate, benzoinphenyl carbamate, benzoinacrylate, benzoinphenylether, benzoyl peroxide, dicumyl peroxide, azoisobutyronitrile, phenyldisulfide, acylphosphanoxide or chlormethylanthrachinon and mixtures thereof.
In addition to a photoinitiator, 0.3 to 5.0%-wt of an activator can be mixed into the coating system. Suitable activators are, for example, mercaptoacetic acid, organic amines, such as n-decylamine, piperazine, morpholin, tributylamine, benzylamine, allylamine, polyethyleneamine and/or piperidine.
The razor or razor-blade unit according to the present invention is characterized in that the system that enhances its gliding ability consists of a 5 to lOOO~vm thick layer of a mixture, hardened by ultraviolet radiation, of water-soluble polymers, in particular poly-N-vinylpyrrolidon or a copolymer of ., :,:
''.''`' ' : ' . .

1328g~9 this, one or a plurality of radically polymerisable vinyl monomers and photinitiator that decomposes into radicals when irradiated. Further configurations of this gliding layer result from the above-cited compositions. The particular advantage is that the coating on the razor, razor head or razor-blade unit can be effected on a large area, even a complete surface, on the polystyrene or ABS or metal carrier body, or on a subsequently applied PVC foil, which means that the thickness of the layer can be easily adjusted, in that the volume of the applied solution does not change during the hardening process, so that the thickness of the applied layer is`maintained. Even relatively thick layers can be managed by adjusting the viscosity of the solution, without any uncontrolled migration of the solution after application and consequent change in the thickness of the layer. In addition, the layer adheres very well to the polystyrene or ABS used in the razor, as a rule in the form of a molded body, so that formation of a gliding surface is simple.
Other details, features and advantages of the present invention are set out in the following description of associated examples, as well as from the drawing appended hereto, which shows a razor according to the present invention.

Example 1 A mixture of 2.40 g tetrahydrofuranyl-2-methlacrylate, 0.05 g photoinitiator (Darocur 1116, Merck), 0.25 g polyvinyl-~. ~t~-m~k ,.: .

,..................................... . .
. .

pyrrolidon and 0.05 g tetraethylene glycol-diacrylate was applied to a polystyrene form with a brush and then the covering layer was irradiated using an 80-W ultraviolet lamp for a period of 15 minutes from a distance of 5 cm. The hardened coating displays a drastically reduced coefficient of friction when wet.
Sliding friction of a leather disk, pressed with 1 kg/8 cm2 on the coated surface is:
dry - 350 CN
wet - 180 CN
----___ Example 2 A mixture40f 2.45 g tetrahydrofuranyl-2-methylacrylate, 0.05 g photoinitiator (Durocur 1116), 0.25 g polyvinylpyrrolidon was applied by sponge to a polystyrene body and then irradiated for 30 minutes with an Hg ultraviolet lamp from a distance of 10 cm. When wet, the hardened coating displayed a drastically reduced coefficient of friction. Sliding friction of a leather disk, pressed with 1 kg/ 8 cm2 pressure on the treated and hardened surface:
dry - 360 CN
wet - 180 CN

_____________ Example 3 2.30 g tetrahydrofuranyl-2-methylacrylate, 0.20 g photoinitiator, and 0.25 g polyvinylpyrrolidon were mixed, applied by roller to a polystyrene carrier, and then hardened 7,, ".' ' '~

, ' '' ~,: , '`
. ' .

13289~'9 with an 80-W ultraviolet lamp for 15 minutes from a distance of 5 cm.
The frictional resistance of the coated surface was reduced to a ` very great extent by moistening. Sliding friction of a leather disk, pressed onto the hardened surface at 1 kg/8 cm2:
dry - 350 CN
wet - 210 CN
_____________ Example 4 10 g N-vinylpyrrolidon, 10 g trimethylolpropane , monoacrylate (Roskydal KL 5-2475, Bayer) were mixed with 4 g PvP
, and 0.75 g photoinitiator (Darocur 1116, Merck), and applied by i rake to a carrier of ABS or a PVC foil and then irradiated with an 80-W ultraviolet lamp for 3 minutes from a distance of 5 cm.
A surface that is extromely slippery when wet is obtained.
Coefficient of friction - dry 330 CN
Coefficient of friction - wet 80 CN
____________ Example 5 5 g NVP, 5 g trimethylolpropane monoacrylate were mixed with 2 g PVP and 0.18 g photoinitiator (Lucirin LR 8728, BASF), applied , by rake to a carrier of ABS or a PVC foil, and irradiated with an 80-W ultraviolet lamp for 45 seconds from a distance of 5 cm.
A surface whose coefficient of friction is drastically reduced when wet is obtained.
dry - 340 CN

,!

, , . ' . ,: ' , . . ` . . .
~ . , .

wet - 100 CN
____________ The razor 1 that is shown in the sole drawing appended hereto has a razor-blade unit 3 that can be installed on a handle: two blades 4, 5 are incorporated in this unit between a razor-blade bed 6 and a cap 7, this being done in the conventional manner. A protective and guide rail 8 is arranged on the razor-blade bed, and this is ribbed as is usual. The whole cap as well as, optionally, the guide surface is provided with a gliding layer 2, as is shown in the hachured area; this layer is applied as set out in examples 1 to 3 above, and consists of substances mixed as described therein.

r, .

~ . .
I ' . . . . ' ' ' ': ' ~, . . .
...
~'~ ' . , ' ' .
~':

Claims (19)

1. A process of forming and applying a hydrophilic coating that is extremely slippery when wet to a moulded part of plastic or metal, directly or indirectly via a plastic film, which process comprises applying a solution that contains a water-soluble polymer to the moulded part and there hardened, wherein the solution that is applied to the moulded part consists of a water-soluble polymer, one or a plurality of radically polymerisable vinyl monomers and a photoinitiator that decomposes into radicals;
wherein the solution that is applied is exposed to ultraviolet irradiation to be hardened and wherein the moulded part comprises a razor or razor-blade unit and said water-soluble polymer comprises poly-N-vinylpyrrolidone or a copolymer thereof.
2. A process as defined in claim 1, wherein the solution contains 0.1 to 90%-wt polyvinylpyrrolidone.
3. A process as defined in claim 1 wherein the solution contains 5 to 35%-wt polyvinylpyrrolidone.
4. A process as defined in claim 2, wherein the mean molecular weight of the polyvinylpyrrolidone is 200,000 to 500,000 g/mol.
5. A process as defined in any one of the claims 1 to 4, wherein acrylic acid, methacrylic acid or a derivative thereof, a mixture or an acrylic acid derivative with N-vinylpyrrolidone, or a mixture of styrene and maleic acid or fumaric acid that contains a polyester resin is used as a vinyl monomer.
6. A process as defined in any one of claims 1 to 4, wherein the vinyl monomer comprises 0 to 80%-wt of hydrophobic monomers.
7. A process as defined in any one of claims 1 to 4 wherein the vinyl monomer comprises 0.5 to 50%-wt of hydrophobic monomers.
8. A process according to claim 6, wherein the vinyl monomer is selected from the group consisting of methylmethacrylate, butylacrylate, ethylacrylate, cyclohexyl-acrylate, or ethylhexylacrylate.
9. A process as defined in any one of claims 1 to 4 and 8, wherein the vinyl monomers are urethane-modified acrylic- or methacrylic acid esters.
10. A process as defined in any one of claims 1 to 4 and 8, wherein the multifunctional vinyl compounds are added in a quantity of up to 50%-wt.
11. A process as defined in any one of claims 1 to 4 and 8, wherein acetone, methylethylketone, methanol, ethanol, propanol, butanol, ethylacetate, butylacetate, methylene chloride, toluol, THF, or water, as well as mixtures thereof, are used as solvents for the solution that is to be applied.
12. A process as defined in any one of claims 1 to 4 and 8, wherein the photoinitiator is used in the solution in a quantity from 0.01 to 5%-wt.
13. A process as defined in any one of claims 1 to 4 and 8, wherein the photoinitator is used in the solution in a quantity from 0.3 to 5%-wt.
14. A process as defined in claim 13, wherein, in addition, 0.3 to 5%-wt of a photoactivator is added to the solution.
15. A process as defined in claim 14 wherein the photo-activator is mercaptoacetic acid or an organic amine.
16. A razor or razor-blade unit with at least one razor blade that is secured to the blade bed and surface that is adjacent to the razor blade for passing over a user's skin and having a 5 to 1000 µm thick coating layer of a mixture of water-soluble polymers, one or more radically polymerisable vinylmonomers and a photoinitator that decomposes into radicals on exposure to radiation, said coating layer being hardened by exposure to ultraviolet radiation.
17. A razor or razor-blade unit according to claim 16 wherein said surface adjacent the razor blade is a cap of plastic or metal.
18. A razor or razor-blade unit according to claim 17 wherein the cap is polystyrene or ABS.
19. A razor or razor-blade unit according to any one of claims 16 to 18 wherein the mixture of water-soluble polymers comprises poly-N-vinylpyrrolidone or a copolymer thereof.
CA000565856A 1987-05-06 1988-05-04 Process to produce a hydrophilic coating on a molded part and a razor produced by applying this process Expired - Fee Related CA1328989C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DEP3714971.7 1987-05-06
DE3714971 1987-05-06
DE3814135A DE3814135A1 (en) 1987-05-06 1988-04-27 METHOD FOR PRODUCING A HYDROPHILIC COATING ON A MOLDED PART AND USING THE METHOD OF A SHAVER
DEP3814135.3 1988-04-27
IN540DE1988 IN172419B (en) 1987-05-06 1988-06-21

Publications (1)

Publication Number Publication Date
CA1328989C true CA1328989C (en) 1994-05-03

Family

ID=27195873

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000565856A Expired - Fee Related CA1328989C (en) 1987-05-06 1988-05-04 Process to produce a hydrophilic coating on a molded part and a razor produced by applying this process

Country Status (13)

Country Link
US (1) US5005287A (en)
EP (1) EP0289996B1 (en)
JP (1) JP2631997B2 (en)
AT (1) ATE69181T1 (en)
AU (1) AU604883B2 (en)
BR (1) BR8802196A (en)
CA (1) CA1328989C (en)
DD (2) DD284615A5 (en)
DE (2) DE3814135A1 (en)
ES (1) ES2027340T3 (en)
HK (1) HK62795A (en)
IL (1) IL86271A (en)
IN (1) IN172419B (en)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418247A1 (en) * 1988-03-23 1991-03-27 E.I. Du Pont De Nemours And Company Low coefficient of friction surface
DE9002710U1 (en) * 1990-03-08 1991-07-11 Wilkinson Sword Gmbh, 5650 Solingen, De
DE9004762U1 (en) * 1990-04-27 1991-08-29 Wilkinson Sword Gmbh, 5650 Solingen, De
DE9004760U1 (en) * 1990-04-27 1991-08-29 Wilkinson Sword Gmbh, 5650 Solingen, De
US5626154A (en) * 1993-09-13 1997-05-06 The Gillette Company Method and system for shaving including a lubricant and a water-swellable polymer
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
US5956849A (en) * 1997-06-05 1999-09-28 Bic Corporation Lubricating shaving aid
EP0991702B2 (en) * 1997-06-20 2017-07-19 Coloplast A/S A hydrophilic coating
WO1998058990A1 (en) * 1997-06-20 1998-12-30 Coloplast A/S A hydrophilic coating and a method for the preparation thereof
AU8011698A (en) * 1997-06-20 1999-01-04 Coloplast A/S A hydrophilic coating and a method for the preparation thereof
US6041503A (en) * 1998-02-25 2000-03-28 Calwell; Stuart Aroma therapy delivery system
US6681665B2 (en) * 1998-02-25 2004-01-27 Stuart Calwell Aroma therapy delivery system
USD422380S (en) * 1998-08-31 2000-04-04 The Gillette Company Shaving aid strip for razor cartridge
USD424745S (en) * 1999-08-05 2000-05-09 The Gillette Company Shaving aid strip for razor cartridge
GB2353739A (en) * 1999-09-04 2001-03-07 Federal Mogul Technology Ltd Applying a low friction and low wear coating
US6996908B2 (en) * 2000-02-16 2006-02-14 Eveready Battery Company, Inc. Wet shaving assembly
US7086159B2 (en) 2000-02-16 2006-08-08 Eveready Battery Company, Inc. Razor assembly
US6584690B2 (en) * 2000-02-16 2003-07-01 Warner-Lambert Company Wet shaving assembly
US7370419B2 (en) 2000-02-16 2008-05-13 Eveready Battery Company, Inc. Replacement cartridge for a razor assembly
US7178241B1 (en) 2000-05-22 2007-02-20 Eveready Battery Company, Inc. Lubricating shaving assembly
US20050278954A1 (en) * 2002-04-24 2005-12-22 Eveready Battery Company, Inc. Shaving aid body for a safety razor
US7266895B2 (en) * 2002-04-24 2007-09-11 Eveready Battery Company, Inc. Razor assembly
CN100465202C (en) * 2002-10-02 2009-03-04 科洛普拉斯特公司 A hydrogel
FR2846970B1 (en) * 2002-11-08 2006-08-11 Desarrollo Del Grafting S L METHOD FOR SURFACE TREATMENT BY PHOTOPOLYMERIZATION TO OBTAIN BIOCIDAL PROPERTIES
WO2004056909A1 (en) 2002-12-20 2004-07-08 Coloplast A/S A hydrophilic coating and a method for the preparation thereof
US7200936B2 (en) * 2003-04-07 2007-04-10 Eveready Battery Company, Inc. Shaving aid dispenser system for use in a wet shaving razor
IES20030294A2 (en) * 2003-04-17 2004-10-20 Medtronic Vascular Connaught Coating for biomedical devices
US7162800B2 (en) * 2003-05-12 2007-01-16 Eveready Battery Company, Inc. Wet shaving assembly
US20050015990A1 (en) * 2003-07-25 2005-01-27 Barone Chris A. Method for producing a shaving aid cartridge
EP1505102B1 (en) * 2003-08-07 2007-06-27 Bioservice S.p.A. A process for preparing hydrophilic coatings and products thus obtained
US7103976B2 (en) * 2004-02-06 2006-09-12 Eveready Battery Company, Inc. Razor assembly
US7837675B2 (en) * 2004-07-22 2010-11-23 Shaser, Inc. Method and device for skin treatment with replaceable photosensitive window
MX2007006335A (en) 2004-11-29 2007-07-13 Dsm Ip Assets Bv Method for reducing the amount of migrateables of polymer coatings.
MY162248A (en) 2005-12-09 2017-05-31 Dsm Ip Assets Bv Hydrophilic coating
EP2037977A2 (en) 2006-06-28 2009-03-25 SurModics, Inc. Active agent eluting matrices with particulates
ATE485784T1 (en) * 2006-09-06 2010-11-15 Shaser Inc LASER SCANNING SYSTEM FOR TISSUE TREATMENT
US20100113871A1 (en) * 2006-09-13 2010-05-06 Aylvin Jorge Angelo Athanasius Dias Antimicrobial coating
EP2061526B1 (en) 2006-09-13 2015-07-29 DSM IP Assets B.V. Coated medical device
DK2114477T3 (en) 2007-02-28 2012-08-20 Dsm Ip Assets Bv Hydrophilic coating
CN101622019B (en) * 2007-02-28 2015-01-07 帝斯曼知识产权资产管理有限公司 Hydrophilic coating
WO2008123957A2 (en) * 2007-04-04 2008-10-16 Aculon, Inc. Coated cutting tool
US8540702B2 (en) * 2008-03-11 2013-09-24 Shaser, Inc. Enhancing the brightness of optical radiation used in light-based dermatologic treatment systems
US20110059874A1 (en) * 2008-03-12 2011-03-10 Marnix Rooijmans Hydrophilic coating
EP2547493B1 (en) * 2010-03-15 2015-10-07 The Gillette Company Liquid dispensing device comprising a peristaltic pump
GB201009019D0 (en) * 2010-06-01 2010-07-14 King Of Shaves Company The Ltd Razor or razor blade cartridge and methods of manufacture therefore
WO2011157805A1 (en) 2010-06-16 2011-12-22 Dsm Ip Assets B.V. Coating formulation for preparing a hydrophilic coating
US8541498B2 (en) 2010-09-08 2013-09-24 Biointeractions Ltd. Lubricious coatings for medical devices
GB2511726B (en) * 2013-01-09 2016-12-21 SOCIéTé BIC Razors and razor blade cartridges and methods of manufacture therefore
CN105121103A (en) * 2013-04-23 2015-12-02 永备电池有限公司 Skin engaging member for a razor cartridge
RU2686497C2 (en) * 2014-04-24 2019-04-29 Конинклейке Филипс Н.В. Personal hygiene device having a sliding surface
EP3597381A1 (en) 2018-07-18 2020-01-22 BIC-Violex S.A. Shaving aid delivery systems for razors
EP3639991A1 (en) * 2018-10-19 2020-04-22 Edgewell Personal Care Brands, LLC Razor blade and method of making it

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2545290A1 (en) * 1975-10-09 1977-04-21 Roehm Gmbh METHOD OF POLYMERIZATION BY USING UV LIGHT
US4171979A (en) * 1976-11-01 1979-10-23 Eastman Kodak Company Method of treating scratched or abraded photographic elements with radiation-curable compositions comprising an acrylated urethane, an aliphatic ethylenically-unsaturated carboxylic acid and a multifunctional acrylate
US4092173A (en) * 1976-11-01 1978-05-30 Eastman Kodak Company Photographic elements coated with protective overcoats
US4100309A (en) * 1977-08-08 1978-07-11 Biosearch Medical Products, Inc. Coated substrate having a low coefficient of friction hydrophilic coating and a method of making the same
US4119094A (en) * 1977-08-08 1978-10-10 Biosearch Medical Products Inc. Coated substrate having a low coefficient of friction hydrophilic coating and a method of making the same
US4170821A (en) * 1977-12-02 1979-10-16 Warner-Lambert Company Razor cartridges
GB2024082B (en) * 1978-05-31 1982-05-06 Gillette Co Safety razors
DE2842938A1 (en) * 1978-10-02 1980-04-17 Roehm Gmbh METHOD FOR POLYMERIZING BY UV LIGHT
DE2929164C2 (en) * 1979-07-19 1980-10-30 Braun Ag, 6000 Frankfurt Process for coating shear parts for an electric dry shaver with a preparation containing solid lubricant
US4378411A (en) * 1980-01-02 1983-03-29 Minnesota Mining And Manufacturing Company Radiation-curable polymers
JPS6099200A (en) * 1983-11-02 1985-06-03 Nippon Parkerizing Co Ltd Lubrication treatment of metal
US4537805A (en) * 1984-03-26 1985-08-27 W. R. Grace & Co. Reactive plastisol dispersion
US4624051A (en) * 1984-12-07 1986-11-25 The Gillette Company Shaving unit
AU7130487A (en) * 1987-04-08 1988-10-13 Tyndale Plains-Hunter Ltd. Hydrophilic coating

Also Published As

Publication number Publication date
EP0289996A3 (en) 1990-04-04
US5005287A (en) 1991-04-09
AU1564688A (en) 1988-11-10
ATE69181T1 (en) 1991-11-15
IN172419B (en) 1993-07-17
JP2631997B2 (en) 1997-07-16
AU604883B2 (en) 1991-01-03
DE3814135A1 (en) 1988-11-24
DD284615A5 (en) 1990-11-21
JPS63294971A (en) 1988-12-01
BR8802196A (en) 1988-12-06
IL86271A0 (en) 1988-11-15
DE3866008D1 (en) 1991-12-12
ES2027340T3 (en) 1992-06-01
EP0289996B1 (en) 1991-11-06
DD299278A5 (en) 1992-04-09
EP0289996A2 (en) 1988-11-09
HK62795A (en) 1995-05-05
IL86271A (en) 1991-11-21

Similar Documents

Publication Publication Date Title
CA1328989C (en) Process to produce a hydrophilic coating on a molded part and a razor produced by applying this process
AU612432B2 (en) Safety razor and process for manufacture of a surface of low frictional resistance on a safety razor
EP2613819B1 (en) Lubricious coatings for medical devices
US5209924A (en) Polysiloxane-grafted copolymer topical binder composition with novel fluorochemical comonomer and method of coating therewith
US4972037A (en) Polysiloxane-grafted copolymer topical binder composition with novel fluorochemical comonomer and method of coating therewith
US5021477A (en) Polysiloxane-grafted copolymer topical binder composition with novel hydrophilic monomers and method of coating therewith
US5889073A (en) Process for producing material with hydrophilic surface
CA2100970A1 (en) Lubricous polyer network
DE69500069T2 (en) "Cosmetic or pharmaceutical composition containing an aqueous polymer dispersion"
CA2932213C (en) Razors and razor blade cartridges and methods of manufacture therefore
JPH0381311A (en) Polysiloxane-grafted copolymer
GB2480916A (en) Razor with surface made of superhydrophilic polymer material
JP2003504658A (en) Removable reflective sheet
JPS56122840A (en) Coating material and preparation of synthetic resin molded product by use of the same
CA2212861A1 (en) Acrylic emulsion coatings for rubber articles
CA1341069C (en) Safety razor and process for manufacture of a surface of low frictional resistance on a safety razor
JPS59184274A (en) Pressure sensitive adhesive coating product tacky at normal condition
JPS6048591B2 (en) Plastic molded product having a metal thin film on its surface and its manufacturing method
JPS6431642A (en) Ink jet recording head
JPS6383117A (en) Coating agent composition which can give cured coating
JPH0142972B2 (en)
JPS60173023A (en) Production of synthetic resin molding excellent in abrasion resistance and surface smoothness
JPH04288350A (en) Surface modification of plastic film
JPS63287577A (en) Transfer sheet and method for transferring
JPH03146176A (en) Formation of organic thin film on metal sheet

Legal Events

Date Code Title Description
MKLA Lapsed