Patent Application
20170172786
Field of the invention
Embodiments of the present invention generally relate to condoms and, more particularly, to a coated condom comprising at least one of a lubricant, flavorings, scents, and/or the like and methods of fabricating coated condoms.
Description of the Related Art
A condom comprises an elastomeric layer in a generally tubular shape, with an open end and a closed end, to provide physical barriers against the transmission of bodily fluids, viruses, and the like. A typical condom is approximately 180 millimeters in length and has a wall thickness of approximately 0.06 mm. Also, the typical condom has a tip, such as reservoir for semen, that is approximately 25 millimeters in length at a closed end of a condom and a bead or “ring,” which is approximately 1.5 millimeters in thickness, at an open end of the condom. With the foregoing dimensions in view, a rolled condom must be rolled approximately fifteen times around its bead for a rolled length of approximately one inch at packaging.
Some condoms comprise a coating, such as a lubricant, located thereon. Typically, after the condom is rolled, the coating is introduced near the tip of the rolled condom. However, because the coating, even a lubricant, must migrate through approximately fifteen rolls of elastomeric material and the material is stretched while being tightly rolled, lubricant does not flow along all the rolls and lubricant coverage along the full length of the condom cannot occur. Specifically, the lubricant does not migrate to other areas of condoms, e.g., from a tip to a bead. Typically, even after several months or years, only 50% of the length of condoms is lubricated (i.e., 50% lubricant migration achieved). Additionally, much of the lubricant remains on the foil packaging instead of instead of being dispersed throughout an exterior surface of the condom. From the consumer perspective, this phenomenon could be translated as low lubricant/condom dryness issue due to not enough lubricant on the condom.
Accordingly, there exists a need for a condom that is fully coated along its length, and a method of manufacturing a fully coated condom, that allows the coating to migrate throughout the entire condom much easier and faster and thus prevent, for example, the low coating and/or lubricant/condom dryness phenomenon.
Embodiments according to the invention include coated condoms in which, for example, the lubricant coating substantially covers an entire length of the condom when packaged, and methods for manufacturing such condoms, substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims, are disclosed. Various advantages, aspects, and novel features of the present disclosure will be more fully understood from the following description and drawings.
The foregoing summary is not intended, and should not be contemplated, to describe each embodiment or every implementation of the present invention. Other and further embodiments of the present invention are described below.
So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments. It is to be understood that elements and features of one embodiment may be in other embodiments without further recitation. It is further understood that, where possible, identical reference numerals have been used to indicate comparable elements that are common to the figures.
Embodiments of the present invention generally relate to fully coated condoms, and methods for manufacturing fully coated condoms. In embodiments consistent with the present invention, a fluidic coating material is advantageously disposed on substantially all external surfaces of the condom. That is, the condom is fully coated along the entire length of the condom. In embodiments consistent with the present invention, methods for manufacturing fully coated condoms are described herein which include the application of a fluidic coating material to the condom prior to rolling the condom. By applying the fluidic coating material prior to rolling the condom, the fluidic coating material is able to migrate throughout the entire condom much easier and faster and thus prevent a low coating condom dryness phenomenon.
The condom 200 further comprises one or more coating spots 230, 240, 250, 260, and/or 270 that comprise one or more fluidic coating materials, e.g., lubricants, flavorings, scents, active ingredients, and/or the like, disposed on the exterior shaft surface 214. Although multiple coating spots are shown in
Embodiments according to the invention comprise coatings of several kinds. For example, silicone based lubricants, water based lubricants, gels, and the like, as well as flavorings, scents, and/or active ingredients, e.g., sensitizing agents that provide warming sensations, cooling sensations, and/or tingling sensations, desensitizing agents, and/or spermicides. At least some embodiments according to the invention include a coated condom having at least one active ingredient, and/or additional lubricant, displaced in or near the tip after rolling, in addition to, for example, a lubricant disposed on the condom prior to rolling. Active ingredients comprise medicines, such as anti-virals, anti-microbials, and/or anti-fungals, and vasodilators such as niacin, sildenafil citrate, and/or nitroglycerin and/or male desensitizing agents such as benzocaine, and warming liquids such as caffeine or menthol, and/or the like, and/or spermicides such as nonoxynol-9. Because some active ingredients may be disposed within the tip, less of the active ingredient(s) is needed because the active ingredient(s) remains localized and a higher concentration is therefore delivered to the tip of the penis, where it is needed, during or before sexual contact. For example, typically, benzocaine is administered in a 3.0 to 7.5% in a water-soluble base medium. Therefore, a typical dosage within a condom is 300-400 mg at 4.5% concentration. Because the majority of the active ingredient is localized at the tip, less dosage is needed, e.g., 200-300 mg to provide efficacy without overdosing.
At 312, the condom is rolled to form a fully coated condom having a fluidic coating, e.g., a lubricant, disposed along essentially the length of the condom, so that all of the exterior surface of the condom comprises lubricant. Since the lubricant is applied to condom before rolling, the lubricant migrates to all areas of the condom if not immediately, within hours. Specifically, the action of rolling the condom promotes the migration of the lubricant to substantially all of the length of the condom. That is, rolling the condom pushes/forces the lubricant to move forward from the rear end 210 proximate the opening 106 towards the front end 220 proximate the tip 202. At step 314 the lubricated, rolled condom may be packaged in a foil packaging. At step 316, the method ends.
It is to be understood that, in some embodiments according to the invention, each step of the method is performed. Also, in some embodiments, some steps are omitted and/or additional steps are performed. For example, any method herein can include a step for adding, for example, additional lubricant, flavoring, scent, active ingredient, etc., after the rolling step or other optional steps for cleaning a condom former, for example, with brushes, such as nylon brushes, and/or pre-heating the former, for example, with hot air or within an oven at a temperature of approximately 35-60° C. Also, in at least one or more embodiments, a strong or weak coagulant component or solution, as is known to those in the art, may be disposed onto the former. If a coagulant solution is disposed on the former, it is optionally dried, for example, at 50-70° C. for approximately 2-5 minutes. The condom may then be as be washed, leached, etc., as is known to those in the art before the lubricant is applied thereto. The method may include a step for stripping the condom from the condom former. In at least one embodiment according to the invention, the inverting and rolling steps are performed by, for example, an air jet or compressed air, such as at 2-4 bars of pressure, sprays the condom and strips the condom at the same time. Optionally, the condom may be stripped partially from the former and a roller used to strip the condom from the condom former. Compressed air may also promote the migration of the lubricant to further areas of the condom.
Coated condoms described herein are made using polymeric, elastomeric, and/or latex emulsions or compositions, such as natural rubber latex, synthetic polyisoprene, polyurethane, and other elastomeric materials for emulsions or compositions, and/or blends thereof, as are described herein comprises vulcanizing agents, activators, accelerators, antioxidants, stabilizers, thixotropic agents and/or the like as are known to those in the art. At least one exemplary embodiment of a formula for an emulsion or composition according to embodiments of the invention comprises potassium hydroxide, ammonium solutions, and/or the like for diluting the emulsion or composition, adjusting the pH, and the like and/or surfactants, such as a polysorbate, for example, TWEEN® 20, to stabilize the emulsion or composition.
Additionally, the temperature of the emulsion or composition may be controlled, for example, the temperature may be from approximately 20° C. to approximately 30° C. during the dipping process. Also, embodiments of the polymeric compositions according to the invention comprise additives to control or modify the properties of the composition, such as the viscosity of the composition as well as the physical properties, for example, lubricity, tensile strength, puncture resistance, and the like, of condoms formed therefrom. The viscosity of the compositions according to embodiments of the invention is, for example, approximately 20 to approximately 60 centipoises.
As used herein, the terms polymeric, elastomeric, thermoplastic elastomer, latex, and rubber are used interchangeably to describe material, such as a polymeric composition, used to form coated condoms in accordance with embodiments of the invention. Emulsions or compositions include elastomeric compositions, polymeric compositions, latex compositions, and natural rubber compositions, synthetic compositions, and/or blends or mixtures thereof. The term “natural rubber latex” as used in this disclosure encompasses cured elastomeric material sourced from Hevea brasiliensis (the traditional rubber tree), non-Hevea rubber such as Parthenium argentatum (guayule), sunflower, goldenrod, and the like, as well as genetically modified variations of these or other biological sources. In some embodiments of the invention, condoms comprise the pre-vulcanized and post-vulcanized latex composition as disclosed in commonly-assigned U.S. Pat. No. 8,087,412, which is incorporated by reference in its entirety. In some embodiments of the invention, synthetic polyisoprenes, polychloroprenes, carboxylated butadiene-nitriles, polyurethanes or polyurethane-polyurea copolymers, or combinations thereof are used.
The total solids content range of the emulsions or compositions, which may include a natural color or another color, range from about 28% to about 70%. At least one exemplary embodiment according to the invention comprises a composition having a total solids content of approximately 53%. Moreover, processing aids, additives, rheological additives, stabilizers, and the like, known to those in the art, may be incorporated into any emulsion or composition.
Furthermore, embodiments according to the invention comprise compositions having colorants and/or pigments, and further include glow-in-the-dark or fluorescent colorants or pigments. For example, at least one pigment according to embodiments of the present invention is a Quinacridone, such as Colanyl® Red E3B 130 manufactured by the Clariant Corp., or a Phthalocyanine, such as Colanyl® Blue A2R 131 also manufactured by the Clariant Corp., or combinations thereof. Examples of glow-in-the-dark pigments include photoluminescent pigments, such as SP-6-B distributed by Farben Technology but are not limited thereto.
The coated condoms described herein may be manufactured using a condom former, which may be a smooth former or, alternatively, a former having depressions on the surface, e.g., a textured former, which create ribs, studs, and the like, on an interior surface of a condom. In one or more embodiments, the condom former may include a tubular body having a first end and a second end. The tubular body may have an overall shape that is similar to the shape of a penis, thereby resulting in the polymeric layer of the condom described above. The tubular body of the condom former may include a base segment that is disposed adjacent to the first end and extends from the first end toward the second end. In one or more embodiments, the second end is utilized to form a closed end of the condom described above, while the first end of the former is utilized to form an open end and a base portion of the condom described above. The condom former according to one or more embodiments may be formed from glass, borosilicates, ceramic materials, metallic materials, and/or other materials known in the art. In one or more embodiments, at least one method includes providing a former comprising an axial length, a circumference, and a plurality of depressions, ribs, or protrusions disposed along at least a portion of the length and around or along the circumference of the former as is disclosed in commonly assigned US Pub. No. 2012/0073580, which is incorporated by reference in its entirety.
Also, in some embodiments, one or more coagulant or primer solutions are disposed onto the condom former before dipping into an emulsion or composition, and in some embodiments, coagulant or primer solutions are not disposed onto the condom former. Coagulant or primer solutions comprise concentration ranging from about 1% to about 50% by weight, and may include a natural color or another color. In some embodiments of the present invention, the coagulant concentration is about 5% by weight. According to some embodiments, the coagulant solution may contain Group I metal salts, Group II metal salts, or combinations thereof, and wetting agents ranging from 0.1-0.2% by weight in an aqueous or alcoholic solution. In some embodiments of the invention, the coagulant is an aqueous solution comprising 3.5% Calcium Nitrate and 96.5% water, e.g., a strong coagulant.
In at least one exemplary embodiment according to the invention, the coagulant solution comprises a 3-15% Calcium Nitrate or other Calcium salt, 2-10% Calcium Carbonate, and a small amount of surfactant and anti-foam agent, as are known to those in the art. Furthermore, at least one exemplary embodiment replaces Calcium Carbonate with a powder-free coagulant, such as a stearate, such as Calcium Stearate, so that post-washing steps may be omitted. Other suitable strong coagulants known to those in the art may also be used, such as calcium chloride. Weak coagulants include acetic acid, formic acid, and/or other weak acids.
Embodiments according to the invention comprise packaging made of foils. At least one exemplary embodiment according to the invention comprises environmentally friend composite foils, such as the technologies disclosed in US Pub. No. 2015/0217537, which is commonly assigned and incorporated by reference in its entirety.
While the foregoing is directed to embodiments of the invention, other embodiments of the invention may be devised without departing from the scope thereof, and the scope thereof is determined by the following claims.
