CA2243740A1 - Humidifying lipstick case - Google Patents
Humidifying lipstick case Download PDFInfo
- Publication number
- CA2243740A1 CA2243740A1 CA002243740A CA2243740A CA2243740A1 CA 2243740 A1 CA2243740 A1 CA 2243740A1 CA 002243740 A CA002243740 A CA 002243740A CA 2243740 A CA2243740 A CA 2243740A CA 2243740 A1 CA2243740 A1 CA 2243740A1
- Authority
- CA
- Canada
- Prior art keywords
- volatile solvent
- case
- volatile
- product
- case according
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
- A45D40/02—Casings wherein movement of the lipstick or like solid is a sliding movement
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
- A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
- A45D40/262—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
- A45D2040/0025—Details of lipstick or like casings
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/05—Details of containers
- A45D2200/054—Means for supplying liquid to the outlet of the container
- A45D2200/055—Piston or plunger for supplying the liquid to the applicator
Landscapes
- Cosmetics (AREA)
Abstract
This invention provides a self humidifying case which comprises a base for receiving a stick-type product, a hollow cap formed with an outer wall fitting over the base, and a volatile solvent-absorbing material secured within the case and soaked with a volatile solvent. This volatile solvent used is the same as that which is employed within the composition of the volatile-solvent containing product. The volatile solvent contained in the product and the solvent-absorbing material evaporates, thereby saturating the inner chamber of the case with the volatile solvent in vapor form. This saturation aids in preventing the volatile from escaping from the stick-type product by creating an equilibrium within the cases' interior chamber.
Description
HUMIDIFYING LIPSTICK CASE
FIELD OF THE INVENTION
The present invention relates to a stick-type product case that prevents the loss 5 of a volatile solvent from a stick-type product into and out of the case. Moreparticularly, it concerns a case which is self humidifying to prevent the loss of a volatile solvent from a volatile solvent-containing stick product.
BACKGROUND OF THE INVENTION
It is desirable to have stick-type products that contain a volatile solvent because the volatile solvent provides for a better "feel" of the product when applied to the skin.
The problem encountered with these types of formulations is that they readily lose the volatile solvent contained within their composition due to evaporation from the product.
The loss of a volatile solvent from a stick-type product can adversely affect the 15 physical properties of the product as well as reduce the amount of volatile delivery.
Even when not stored above room temperature, it has been noted that there is loss of the volatile solvent over time.
Prior art cases have tried to remedy this problem by providing a sealed case (see US Patents 5,197,814 and 5,342,134). This case provided for the insertion of a 20 flexible sleeve into the cover of the case. When the cover is placed on the base of the case the flexible sleeve makes contact with an outer wall of the base and effectively seals the case and its contents from volatile loss.
The problem with these types of cases is that, although the case does not allow the volatile solvent to escape from the inside of the case, it does not prevent the 25 volatile solvent-containing product from losing the volatile into the inner chamber of the case until an equilibrium is reached. From a pure weight analysis of the case and the product together it seems as though the product does not actually lose the volatile solvent. This is not wholly accurate. Instead, the volatile evaporates from the product to a point where the volatile is contained in the form of vapor in the inner chamber of . CA 02243740 1998-07-20 the case. These cases prevent volatile loss from the case itself but not from the product.
This invention provides a case for a volatile solvent-containing stick-type product that aids in preventing the loss of the volatile solvent from the stick-type product.
This invention also provides a case for a volatile solvent-containing stick-typeproduct wherein most components of the existing standard cases can still be employed thereby minimizing package re-tooling costs.
Further, this invention provides a case for a volatile solvent-containing stick-type product that prevents the loss of the volatile solvent from the stick-type product while at 10 the same time being a relatively simple device that avoids interference with the package aesthetics.
SUMMARY OF THE INVENTION
This invention provides a self humidifying case which comprises a base for 15 receiving a stick-type product, a hollow cap formed with an outer wall fitting over the base, and a volatile solvent-absorbing material secured within the case and soaked with a volatile solvent. This volatile solvent used is the same as that which is employed within the composition of the volatile-solvent containing product. The volatile solvent contained in the product and the solvent-absorbing material evaporates, thereby 20 saturating the inner chamber of the case with the volatile solvent in vapor form. This saturation aids in preventing the volatile from escaping from the stick-type product by creating an equilibrium within the cases' interior chamber.
This case will be useful in preventing loss of a volatile from volatile solvent-containing stick-type products such as a lipsticks, lip balms, deodorants, 25 antiperspirants, solid perfumes, concealers, make-up foundations, eyeshadows, blushes, acne treatment products, sunscreens, and the like.
DETAILED DESCRIPTION OF THE INVENTION
A system has been devised which prevents the loss of a volatile solvent from a 30 stick-type product. A "volatile solvent" can be any liquid product that possesses a substantial or significant vapor pressure at or around ambient temperature (such as water, volatile oils, volatile silicones, and volatile alcohols). As described in the present invention "humidifyingn relates to the evaporation of any volatile solvent into the inner chamber of a case, thereby filling the inner chamber with the volatile in vapor 5 form.
This invention is for a case which comprises a base, a hollow cap fitting over the base and a volatile solvent-absorbing material secured within the case. This case, in its simplest form, can be used with any existing lipstick case, deodorant case, or any other case that houses a stick-type product. Adaptation of the existing cases can be 10 achieved through simple modifications whereby a volatile solvent-absorbing material is secured within the case.
In the present invention the volatile solvent-absorbing material is soaked with the same volatile solvent that is used within the stick-type product (e.g., water, oil, silicone, alcohol). For example, in a lipstick, suitable volatile oils include, but are not 15 limited to, both cyclic and linear silicones, such as cyclomethicones, for example, octamethylcyclotetrasiloxane, and decamethylcyclopentasiloxane; or straight or branched chain hydrocarbons having from 8-20 carbon atoms, such as decane, dodecane, tridecane, tetradecane, and C8-20 isoparaffins. Further, deodorant formulations have used volatile alcohols such as ethanol and isopropanol. Even more 20 recently there have been lipstick formulations that contain water.
An important feature of the present invention is that both the volatile solvent-absorbing material and volatile solvent-containing product, in the closed case, allow the volatile solvent to evaporate into the inner chamber of the case, thereby filling the inner chamber of the case with the volatile solvent in vapor form. This evaporation forms an 25 equilibrium between the volatile in the volatile solvent-absorbing material, the volatile contained within the product, and the volatile in vapor form, thus retarding further loss of the volatile from the product while the cap is closed. Depending on the amount of volatile contained within the product, and how readily the volatile solvent evaporates from the product, the volatile solvent contained within the volatile solvent-absorbing 30 material may evaporate more slowly, at the same rate as, or more rapidly than the volatile solvent contained within the product. The choice of which volatile solvent-absorbing material to use will depend greatly on the composition of the product and the volatile solvent employed therein.
Determination of a suitable material for a given product is a matter of routine experimentation. First, one looks to materials which are compatible with the volatile solvent. For example, the material cannot be one which will degrade or dissolve in the presence of the solvent. Also, the solvent-absorbing material should be one which readily releases the solvent as vapor from its matrix. The ease of release of a given solvent from a given matrix can be readily deterrrlined by a weight loss analysis of the 10 solvent-soaked absorbing material over time.
Useful volatile solvent-absorbing materials are gels. Hydrophilic gels, such as,carboxymethyl cellulose, hydrolyzed polyacrylonitrile-grafted starch, polyvinylpyrrolidinone, copolymers of maleic and acrylic acids, and partially hydrolyzed polyacrylamide are particularly useful. Other useful materials include foamed plastic 15 and rubber compounds, such as, polyurethane, nitrile-butadiene-rubber, and the like.
Also, various natural and synthetic fibers such as cotton, cellulose, wool, felt, and the like can be used. As a particular example, when using a volatile such as water, appropriate volatile solvent-absorbing materials would be a poly(sodium acrylate) homopolymer or a cellulose sponge.
The volatile solvent-absorbing material can be secured in differing locations, or more than one location, within the case by various means. For example, the volatile solvent-absorbing material can be secured within the cap or base of the case, or both, to provide for a greater amount of material that will contribute to the humidifying of the case.
The means of securing the volatile solvent-absorbing material within the case will depend upon the type of volatile solvent-absorbing material utilized. An adhesive can be used which will allow the volatile solvent-absorbing material to remain in the desired location within the case. The volatile solvent-absorbing material can be sized appropriately so that a friction-fit between the volatile solvent-absorbing material and 30 the desired location within the case is achieved in such a way that does not allow the volatile solvent-absorbing material to release from its position. The case can alternatively be provided with an inwardly projecting ring along the inner wall of the case, whereby the volatile solvent-absorbing material is held in place by the ring, or the solvent-absorbing material can be of the type that is sprayed into and along the inner 5 wall of the case, thereby coating the inner surface.
For example, when the volatile solvent-absorbing material is a poly(sodium acrylate) homopolymer gel, securing the material is accomplished by placing the material in the desired location within the case and then soaking the material with the appropriate volatile. This will cause the material to swell and tackify, thus securing the 10 material in the desired iocation.
Optionally, as a supplement to the action of the volatile solvent-absorbing material, the hollow cap can be designed as to make a seal between the base and the cap, which seal is impervious to the volatile. For example, in an unsealed generic lipstick case, the cap fits over the base and is held in place via a friction fit. In this 15 generic case, the fit between the cap and the base does not necessarily make a volatile impervious seal between the internal environment of the case and the external environment; rather, the fit is for the purpose of keeping the cap in place and not for obtaining a seal. The fit of the cap is not designed to make a seal in a generic lipstick case because lipsticks have not traditionally contained a volatile and, therefore, seals 20 were unnecessary.
In order for a volatile-impervious seal to be made, additional modifications typically must be made to standard lipstick cases. A volatile-impervious seal can be obtained, for example, by dimensioning the cap and base so that they fit together to make a seal. In an alternate embodiment, a gasket which is sufficiently flexible can be 25 placed between the cap and base to provide for a volatile-impervious seal, or a flexible sleeve which will make a volatile-impervious seal between the cap and the base can be inserted into the cap. Other variations will be apparent to those skilled in the art.
E~(AM PLE
A series of experiments were performed to determine water evaporation levels of a water~ontaining lipstick in various lipstick cases. The lipstick cases used were a generic lipstick case that was unsealed and did not contain a volatile solvent-absorbing material (sample A), a sealed lipstick case containing a polyethylene sleeve inserted 5 into the cap to provide a seal without a volatile solvent-absorbing material (sample B), an unsealed generic lipstick case with AQUA KEEP~ J-440 NF Superabsorbent Polymer (a poly(sodium acrylate) homopolymer; available from KOBO Products, Inc., South Plainfield, NJ) secured within the case (sample C), and an unsealed generic lipstick case with a cellulose s~onge secured within the case (sample D). The samples 10 containing the AQUA KEEP~ polymer and the cellulose sponge materials were soaked with water before testing. Samples were stored at 25~C and 37~C and weighed at regular intervals to determine weight loss. Table l lists the results for the samples stored at 25~C, and Table Il lists the results for the samples stored at 37~C.
TABLE l:PERCENT WEIGHT LOSS AT 25~C
Days SampleA Sample B Sample C Sample D
4.0 1.5 0.0 1.7 16.9 9.9 57 45 12 27.3 18.4 9.6 6.0 16 31.9 22.4 11.6 8.0 21 38.4 28.6 15.5 10.8 28 45.1 33.9 23.5 17.4 51.5 40.8 33.5 27.0 42 56.8 45.9 40.9 33.0 TABLE ll:PERCENT WEIGHT LOSS AT 37~C
Days SampleASample B Sample C Sample D
9.3 6.2 3.3 3.8 4 22.7 18.7 10.7 10.4 From Tables I and 11, it is evident that the use of a volatile solvent-absorbingmaterial in the case provides a substantial protection against loss of volatile from the 5 stick product. In particular, Samples C and D had the lowest percent weight loss and the product retained the highest percent of volatile under all conditions compared to the other cases, even the case which contained a mechanical seal.
The foregoing description and example illustrate selective embodiments of the present invention. In light thereof, various modifications will be suggested to one 10 skilled in the art, all of which are within the scope and spirit of this invention
FIELD OF THE INVENTION
The present invention relates to a stick-type product case that prevents the loss 5 of a volatile solvent from a stick-type product into and out of the case. Moreparticularly, it concerns a case which is self humidifying to prevent the loss of a volatile solvent from a volatile solvent-containing stick product.
BACKGROUND OF THE INVENTION
It is desirable to have stick-type products that contain a volatile solvent because the volatile solvent provides for a better "feel" of the product when applied to the skin.
The problem encountered with these types of formulations is that they readily lose the volatile solvent contained within their composition due to evaporation from the product.
The loss of a volatile solvent from a stick-type product can adversely affect the 15 physical properties of the product as well as reduce the amount of volatile delivery.
Even when not stored above room temperature, it has been noted that there is loss of the volatile solvent over time.
Prior art cases have tried to remedy this problem by providing a sealed case (see US Patents 5,197,814 and 5,342,134). This case provided for the insertion of a 20 flexible sleeve into the cover of the case. When the cover is placed on the base of the case the flexible sleeve makes contact with an outer wall of the base and effectively seals the case and its contents from volatile loss.
The problem with these types of cases is that, although the case does not allow the volatile solvent to escape from the inside of the case, it does not prevent the 25 volatile solvent-containing product from losing the volatile into the inner chamber of the case until an equilibrium is reached. From a pure weight analysis of the case and the product together it seems as though the product does not actually lose the volatile solvent. This is not wholly accurate. Instead, the volatile evaporates from the product to a point where the volatile is contained in the form of vapor in the inner chamber of . CA 02243740 1998-07-20 the case. These cases prevent volatile loss from the case itself but not from the product.
This invention provides a case for a volatile solvent-containing stick-type product that aids in preventing the loss of the volatile solvent from the stick-type product.
This invention also provides a case for a volatile solvent-containing stick-typeproduct wherein most components of the existing standard cases can still be employed thereby minimizing package re-tooling costs.
Further, this invention provides a case for a volatile solvent-containing stick-type product that prevents the loss of the volatile solvent from the stick-type product while at 10 the same time being a relatively simple device that avoids interference with the package aesthetics.
SUMMARY OF THE INVENTION
This invention provides a self humidifying case which comprises a base for 15 receiving a stick-type product, a hollow cap formed with an outer wall fitting over the base, and a volatile solvent-absorbing material secured within the case and soaked with a volatile solvent. This volatile solvent used is the same as that which is employed within the composition of the volatile-solvent containing product. The volatile solvent contained in the product and the solvent-absorbing material evaporates, thereby 20 saturating the inner chamber of the case with the volatile solvent in vapor form. This saturation aids in preventing the volatile from escaping from the stick-type product by creating an equilibrium within the cases' interior chamber.
This case will be useful in preventing loss of a volatile from volatile solvent-containing stick-type products such as a lipsticks, lip balms, deodorants, 25 antiperspirants, solid perfumes, concealers, make-up foundations, eyeshadows, blushes, acne treatment products, sunscreens, and the like.
DETAILED DESCRIPTION OF THE INVENTION
A system has been devised which prevents the loss of a volatile solvent from a 30 stick-type product. A "volatile solvent" can be any liquid product that possesses a substantial or significant vapor pressure at or around ambient temperature (such as water, volatile oils, volatile silicones, and volatile alcohols). As described in the present invention "humidifyingn relates to the evaporation of any volatile solvent into the inner chamber of a case, thereby filling the inner chamber with the volatile in vapor 5 form.
This invention is for a case which comprises a base, a hollow cap fitting over the base and a volatile solvent-absorbing material secured within the case. This case, in its simplest form, can be used with any existing lipstick case, deodorant case, or any other case that houses a stick-type product. Adaptation of the existing cases can be 10 achieved through simple modifications whereby a volatile solvent-absorbing material is secured within the case.
In the present invention the volatile solvent-absorbing material is soaked with the same volatile solvent that is used within the stick-type product (e.g., water, oil, silicone, alcohol). For example, in a lipstick, suitable volatile oils include, but are not 15 limited to, both cyclic and linear silicones, such as cyclomethicones, for example, octamethylcyclotetrasiloxane, and decamethylcyclopentasiloxane; or straight or branched chain hydrocarbons having from 8-20 carbon atoms, such as decane, dodecane, tridecane, tetradecane, and C8-20 isoparaffins. Further, deodorant formulations have used volatile alcohols such as ethanol and isopropanol. Even more 20 recently there have been lipstick formulations that contain water.
An important feature of the present invention is that both the volatile solvent-absorbing material and volatile solvent-containing product, in the closed case, allow the volatile solvent to evaporate into the inner chamber of the case, thereby filling the inner chamber of the case with the volatile solvent in vapor form. This evaporation forms an 25 equilibrium between the volatile in the volatile solvent-absorbing material, the volatile contained within the product, and the volatile in vapor form, thus retarding further loss of the volatile from the product while the cap is closed. Depending on the amount of volatile contained within the product, and how readily the volatile solvent evaporates from the product, the volatile solvent contained within the volatile solvent-absorbing 30 material may evaporate more slowly, at the same rate as, or more rapidly than the volatile solvent contained within the product. The choice of which volatile solvent-absorbing material to use will depend greatly on the composition of the product and the volatile solvent employed therein.
Determination of a suitable material for a given product is a matter of routine experimentation. First, one looks to materials which are compatible with the volatile solvent. For example, the material cannot be one which will degrade or dissolve in the presence of the solvent. Also, the solvent-absorbing material should be one which readily releases the solvent as vapor from its matrix. The ease of release of a given solvent from a given matrix can be readily deterrrlined by a weight loss analysis of the 10 solvent-soaked absorbing material over time.
Useful volatile solvent-absorbing materials are gels. Hydrophilic gels, such as,carboxymethyl cellulose, hydrolyzed polyacrylonitrile-grafted starch, polyvinylpyrrolidinone, copolymers of maleic and acrylic acids, and partially hydrolyzed polyacrylamide are particularly useful. Other useful materials include foamed plastic 15 and rubber compounds, such as, polyurethane, nitrile-butadiene-rubber, and the like.
Also, various natural and synthetic fibers such as cotton, cellulose, wool, felt, and the like can be used. As a particular example, when using a volatile such as water, appropriate volatile solvent-absorbing materials would be a poly(sodium acrylate) homopolymer or a cellulose sponge.
The volatile solvent-absorbing material can be secured in differing locations, or more than one location, within the case by various means. For example, the volatile solvent-absorbing material can be secured within the cap or base of the case, or both, to provide for a greater amount of material that will contribute to the humidifying of the case.
The means of securing the volatile solvent-absorbing material within the case will depend upon the type of volatile solvent-absorbing material utilized. An adhesive can be used which will allow the volatile solvent-absorbing material to remain in the desired location within the case. The volatile solvent-absorbing material can be sized appropriately so that a friction-fit between the volatile solvent-absorbing material and 30 the desired location within the case is achieved in such a way that does not allow the volatile solvent-absorbing material to release from its position. The case can alternatively be provided with an inwardly projecting ring along the inner wall of the case, whereby the volatile solvent-absorbing material is held in place by the ring, or the solvent-absorbing material can be of the type that is sprayed into and along the inner 5 wall of the case, thereby coating the inner surface.
For example, when the volatile solvent-absorbing material is a poly(sodium acrylate) homopolymer gel, securing the material is accomplished by placing the material in the desired location within the case and then soaking the material with the appropriate volatile. This will cause the material to swell and tackify, thus securing the 10 material in the desired iocation.
Optionally, as a supplement to the action of the volatile solvent-absorbing material, the hollow cap can be designed as to make a seal between the base and the cap, which seal is impervious to the volatile. For example, in an unsealed generic lipstick case, the cap fits over the base and is held in place via a friction fit. In this 15 generic case, the fit between the cap and the base does not necessarily make a volatile impervious seal between the internal environment of the case and the external environment; rather, the fit is for the purpose of keeping the cap in place and not for obtaining a seal. The fit of the cap is not designed to make a seal in a generic lipstick case because lipsticks have not traditionally contained a volatile and, therefore, seals 20 were unnecessary.
In order for a volatile-impervious seal to be made, additional modifications typically must be made to standard lipstick cases. A volatile-impervious seal can be obtained, for example, by dimensioning the cap and base so that they fit together to make a seal. In an alternate embodiment, a gasket which is sufficiently flexible can be 25 placed between the cap and base to provide for a volatile-impervious seal, or a flexible sleeve which will make a volatile-impervious seal between the cap and the base can be inserted into the cap. Other variations will be apparent to those skilled in the art.
E~(AM PLE
A series of experiments were performed to determine water evaporation levels of a water~ontaining lipstick in various lipstick cases. The lipstick cases used were a generic lipstick case that was unsealed and did not contain a volatile solvent-absorbing material (sample A), a sealed lipstick case containing a polyethylene sleeve inserted 5 into the cap to provide a seal without a volatile solvent-absorbing material (sample B), an unsealed generic lipstick case with AQUA KEEP~ J-440 NF Superabsorbent Polymer (a poly(sodium acrylate) homopolymer; available from KOBO Products, Inc., South Plainfield, NJ) secured within the case (sample C), and an unsealed generic lipstick case with a cellulose s~onge secured within the case (sample D). The samples 10 containing the AQUA KEEP~ polymer and the cellulose sponge materials were soaked with water before testing. Samples were stored at 25~C and 37~C and weighed at regular intervals to determine weight loss. Table l lists the results for the samples stored at 25~C, and Table Il lists the results for the samples stored at 37~C.
TABLE l:PERCENT WEIGHT LOSS AT 25~C
Days SampleA Sample B Sample C Sample D
4.0 1.5 0.0 1.7 16.9 9.9 57 45 12 27.3 18.4 9.6 6.0 16 31.9 22.4 11.6 8.0 21 38.4 28.6 15.5 10.8 28 45.1 33.9 23.5 17.4 51.5 40.8 33.5 27.0 42 56.8 45.9 40.9 33.0 TABLE ll:PERCENT WEIGHT LOSS AT 37~C
Days SampleASample B Sample C Sample D
9.3 6.2 3.3 3.8 4 22.7 18.7 10.7 10.4 From Tables I and 11, it is evident that the use of a volatile solvent-absorbingmaterial in the case provides a substantial protection against loss of volatile from the 5 stick product. In particular, Samples C and D had the lowest percent weight loss and the product retained the highest percent of volatile under all conditions compared to the other cases, even the case which contained a mechanical seal.
The foregoing description and example illustrate selective embodiments of the present invention. In light thereof, various modifications will be suggested to one 10 skilled in the art, all of which are within the scope and spirit of this invention
Claims (15)
1. A self humidifying case comprising:
a base for receiving a volatile solvent-containing stick-type product;
a hollow cap formed with an outer wall fitting over the base; and a volatile solvent-absorbing material secured within the case and soaked with a volatile product.
a base for receiving a volatile solvent-containing stick-type product;
a hollow cap formed with an outer wall fitting over the base; and a volatile solvent-absorbing material secured within the case and soaked with a volatile product.
2. A case according to claim 1 wherein, a stick-type product is received in the base.
3. A case according to claim 2 wherein, the volatile solvent is chosen from the group consisting of water, silicone, and alcohol.
4. A case according to claim 1 wherein, the volatile solvent-absorbing material is chosen from the group consisting of gels, foamed plastics, foamed rubbers, and natural fibers.
5. A case according to claim 4 wherein, the volatile solvent-absorbing material is a hydrophilic gel.
6. A case according to claim 5 wherein, the volatile solvent-absorbing material is a poly(sodium acrylate) homopolymer.
7. A case according to claim 4 wherein, the volatile solvent-absorbing material is a polyurethane.
8. A case according to claim 4 wherein, the volatile solvent-absorbing material is a nitrile-butadiene-rubber.
9. A case according to claim 4 wherein, the volatile solvent-absorbing material is chosen from the group consisting of cotton, wool, cellulose, and felt.
10. A case according to claim 1 wherein, the hollow cap makes a volatile impervious seal between the cap and the base.
11. A case according to claim 1 wherein, the product is a lipstick, lip balm, deodorant, antiperspirant, solid perfume, concealer, make-up foundation, eyeshadow, blush, acne treatment product, or sunscreen.
12. A self humidifying case comprising:
a base configured to receive a water-containing stick-type product;
a hollow cap formed with an outer wall fitting over the base; and a poly(sodium acrylate) homopolymer or cellulose sponge secured within the case and soaked with water.
a base configured to receive a water-containing stick-type product;
a hollow cap formed with an outer wall fitting over the base; and a poly(sodium acrylate) homopolymer or cellulose sponge secured within the case and soaked with water.
13. A case according to claim 12 wherein, a water-containing stick product is received in the base.
14. A case according to claim 13 wherein, the product is a lipstick, lip balm, deodorant, antiperspirant, solid perfume, concealer, make-up foundation, eyeshadow, blush, acne treatment product, or sunscreen.
15. A case according to claim 12 wherein, the hollow cap makes a volatile impervious seal between the cap and the base.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90026897A | 1997-07-25 | 1997-07-25 | |
| US08/900,268 | 1997-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2243740A1 true CA2243740A1 (en) | 1999-01-25 |
Family
ID=25412258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002243740A Abandoned CA2243740A1 (en) | 1997-07-25 | 1998-07-20 | Humidifying lipstick case |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH1189631A (en) |
| KR (1) | KR19990014086A (en) |
| CA (1) | CA2243740A1 (en) |
| DE (1) | DE19833225A1 (en) |
| FR (1) | FR2767039A1 (en) |
| GB (1) | GB2327663B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7137812B2 (en) * | 2003-10-03 | 2006-11-21 | 3M Innovative Properties Company | Apparatus for indirect bonding of orthodontic appliances and method of making the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256770A (en) * | 1976-06-23 | 1981-03-17 | Rainey Don E | Preservation of perishable comestibles |
| US4934524A (en) * | 1988-09-19 | 1990-06-19 | Brown & Williamson Tobacco Corporation | Package for storing moisture laden articles |
| US5197814A (en) | 1991-06-24 | 1993-03-30 | Elizabeth Arden Co., Division Of Conopco, Inc. | Lipstick article |
| EP0531075A1 (en) * | 1991-08-31 | 1993-03-10 | Imperial Tobacco Limited | Packaging smoking materials |
| US5346323A (en) * | 1992-10-09 | 1994-09-13 | Ghs Products, Inc. | Push-up package |
-
1998
- 1998-07-20 CA CA002243740A patent/CA2243740A1/en not_active Abandoned
- 1998-07-21 GB GB9815916A patent/GB2327663B/en not_active Expired - Fee Related
- 1998-07-23 DE DE19833225A patent/DE19833225A1/en not_active Withdrawn
- 1998-07-23 KR KR1019980029593A patent/KR19990014086A/en not_active Application Discontinuation
- 1998-07-24 FR FR9809475A patent/FR2767039A1/en not_active Withdrawn
- 1998-07-27 JP JP10211130A patent/JPH1189631A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2327663B (en) | 1999-07-14 |
| GB2327663A (en) | 1999-02-03 |
| DE19833225A1 (en) | 1999-01-28 |
| KR19990014086A (en) | 1999-02-25 |
| JPH1189631A (en) | 1999-04-06 |
| FR2767039A1 (en) | 1999-02-12 |
| GB9815916D0 (en) | 1998-09-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |