JP6906549B2 - Plastic bottles and base cups for pressurized dispense systems - Google Patents

Description

The present invention generally relates to pressurized dispensing systems such as systems that release aerosol products. More specifically, the present invention relates to a dispensing system comprising a plastic bottle containing a pressurized product and comprising a base cup attached to the plastic bottle so that the system can stand upright.

Pressurized dispense systems, such as systems used to release aerosol products, generally include a metal (eg, steel or aluminum) container for accommodating the product under pressure before being released from the system. Examples of products released in such systems include air cleaners, fabric coolers, insect repellents, paints, body sprays, hairsprays, shoe or footwear spray products, whipped creams, and processed cheeses. Recently, there has been increasing interest in using plastic bottles as an alternative to metal containers in pressurized dispensing systems, as plastic bottles have several potential advantages. For example, plastic bottles are easier and cheaper to manufacture than metal containers, and plastic bottles can be manufactured in a variety of interesting shapes than metal containers.

One of the greatest challenges in the manufacture of plastic bottles for pressurized dispense systems is to provide plastic bottles with sufficient structural integrity to withstand the internal pressure required for complete discharge of the product. For example, the internal pressure required for a compressed gas aerosol is generally in the range of 45 PSIG to 200 PSIG at 70 ° F, and the liquefied gas aerosol is generally in the range of 17 PSIG to 200 PSIG at 70 ° F. If the plastic aerosol bottle does not have sufficient structural integrity to withstand such pressurization throughout the life of the dispense system, there is a risk of the plastic aerosol bottle exploding. In this regard, it is known that the pressure in a plastic bottle weakens the plastic structure over time, for example by creating stress cracks and stress cracks in the plastic. In addition, the pressurized dispense system increases the already elevated internal pressure when the bottle is dropped, for example, or when the bottle is left in a high temperature environment that heats the contents of the bottle, thus the structure of the plastic bottle. Can be the subject of events where physical integrity is tested. And the possibility of a pressurized plastic bottle bursting as a result of such an event poses an obvious safety risk to the user of the dispense system.

From the point of view of user function, it is very important that the dispense system is upright. However, the use of plastic bottles in pressurized dispense systems presents challenges in allowing the system to stand upright. The bottom of a plastic bottle can be molded into a flat shape to erect the bottle, but such a flat shape has often been found to cause problems. For example, the resulting contour forming a vertically stable bottom in the bottle can be very vulnerable to stress cracks and stress cracks. Further, when the plastic bottle is dropped, the contoured bottom is likely to burst, and for example, when the pressure inside the plastic bottle is increased in a high temperature environment, the bottom may be deformed.

The rounded bottom in the plastic bottle of the pressurized dispense system was found to be much less susceptible to stress cracks and stress cracks than the contoured bottom. In addition, the rounded plastic bottom inside the plastic bottle is less likely to burst when dropped and less likely to deform at high temperatures when the bottle is filled with product and pressurized, compared to the contoured bottom. .. However, on the other hand, the rounded bottom does not provide a surface for the plastic bottle to stand upright. Thus, additional components or "base cups" can be attached to the rounded bottom of the plastic bottle, which provides a flat surface for the plastic bottle to stand upright.

The base cup is a conceptually easy solution for erecting a rounded bottom, but in practice it is very difficult to attach the base cup to a plastic bottle as part of a pressurized dispense system. Is. Pressurized dispense systems can be transported or exposed to different environments before reaching the end consumer. Also, during transportation or exposure to different environments, the pressurized dispense system may be placed in situations where the attachment between the base cup and the bottle may be weakened, such as changes in temperature and impact. If the mounting is weak, the base cup may later come off the plastic bottle when used by the end consumer. It is important to ensure that there is no separation of base cups and bottles that can have dissatisfied consequences for consumers, even if they do not pose a significant safety risk to consumers.

There are various techniques used to securely attach the base cup to plastic bottles, but most of these techniques are problematic, especially in the case of pressurized dispense systems. Welding techniques such as sound waves, vibrations, lasers, and rotary welding can be used to securely attach the base cup to a plastic bottle, but the heat generated during welding softens the material and melts it. Problematic stresses can occur when the bottle is filled and pressurized. In addition, welded plastics require a family of similar plastics used for both the bottom and base cups, which limits the resins that can be used. Another method of attaching the base cup to the bottom of a plastic bottle is by several methods of mechanical attachment, for example, the bottom of the bottle can be molded into a shape that is fixed to the base cup. However, such a shape of the bottom of the bottle can cause the same type of problems seen when flattening the bottom of the bottle to erect itself.

As an alternative to welding and mechanical mounting, adhesives can be used to attach the base cup to the plastic bottle. While there are many types of adhesives to consider, many of these adhesives are not suitable for use with plastic bottles in pressurized dispense systems. For example, UV curable adhesives shrink as they cure, creating additional stress points in plastic bottles, causing stress cracks or stress cracks. As another example, some solvent-based structural adhesives, such as epoxies, may not be suitable because they are generally difficult to cure and have poor impact resistance.

According to one aspect, the present invention provides a container for a pressurized dispense system. The container comprises a bottle with an opening at the top and a rounded bottom at the bottom, the bottle being molded from a plastic material. The container also contains a base cup attached to the rounded bottom of the bottle with hot melt adhesive, the base cup contains a pedestal adjacent to the center of the rounded bottom of the bottle, and the base cup is It has a flat bottom that allows the container to stand upright. The hot melt adhesive forms a layer between the pedestal and the rounded bottom of the bottle, and the hot melt adhesive spreads over the pedestal, thereby forming the rounded bottom and pedestal of the bottle. Form an adhesive layer that prevents contact between them.

According to another aspect, the present invention provides a method of forming a pressurized dispense system. This method includes a step of heating the hot melt adhesive so that the hot melt adhesive is in a molten state, and a step of depositing the melted melt adhesive in a recessed region of the upper wall of the pedestal portion of the base cup. This method also presses the rounded bottom central region of the plastic bottle against the molten hot melt adhesive so that the molten hot melt adhesive spreads over the recessed area and the rest of the upper wall of the pedestal. It involves a step of cooling the melted hot melt adhesive to attach the base cup to the plastic bottle.
According to yet another aspect, the present invention provides an aerosol dispense system. The system includes a bottle with an opening at the top and a rounded bottom at the bottom, the bottle is molded from a plastic material, and the bottle contains an aerosol product under pressure. The spray mechanism is attached to the top of the bottle and includes a nozzle for discharging aerosol products. The base cup is attached to the rounded bottom of the bottle, includes a pedestal adjacent to the center of the rounded bottom of the bottle, and has a flat bottom that allows the aerosol dispense system to stand upright. The hot melt adhesive forms a layer between the pedestal and the rounded bottom of the bottle and spreads over the pedestal to prevent the rounded bottom of the bottle from contacting the pedestal. Be done.

It is a side view of the plastic bottle used in the pressure type dispensing system by one Embodiment of this invention. It is a front view of the upper surface of the base cup according to one Embodiment of this invention. It is a top view of the base cup shown in FIG. It is sectional drawing along the line 4-4 of the base cup shown in FIG. It is a bottom view of the base cup shown in FIG. It is a front view of the lower surface of the base cup shown in FIG. FIG. 2 is a cross-sectional view taken along line 4-4 of the base cup shown in FIG. 2 in which an adhesive is applied to the base cup. It is sectional drawing along the line 4-4 of the base cup shown in FIG. It is a side view of the pressure type dispense system by one Embodiment of this invention. 9 is a cross-sectional view taken along the line 10-10 of the pressurized dispense system shown in FIG.

The present invention generally relates to a pressurized dispense system. More specifically, the present invention relates to a pressurized dispense system comprising a plastic bottle containing a pressurized product and comprising a base cup attached to the plastic bottle to erect the system.

The following description may describe the features of the invention in certain circumstances of the aerosol discharge system. However, one of ordinary skill in the art should be able to easily understand that the present invention is not limited to use with aerosol products. Rather, the pressurized dispense system described herein can be used as an alternative with products other than aerosols. For example, the dispensing system described herein may be used to release foam products such as shaving cream or soap, or used to release food products such as soda, whipped cream, or processed cheese. You may.

FIG. 1 is a side view of a plastic bottle 100 for use in a pressurized dispense system according to an embodiment of the present invention. The bottle 100 includes an upper end 102, a lower end 106, and a main body 104. At the upper end 102, there is a neck region 108 having a crimp ring 110 surrounding the opening 112 of the bottle 100. The main body 104 extends downward from the neck region 108 of the bottle 100 to the lower end 106. At the lower end 106, the bottle 100 is provided with a rounded bottom 114. Note that the shape, size, and ratio of bottle 100 shown in FIG. 1 is merely exemplary. In fact, one of the advantages of using plastic to form the bottle 100 is that the plastic can be molded into a wide variety of shapes and sizes. In this regard, the bottle 100 may be formed using injection molding and / or blow molding techniques well known in the art. In such techniques, the plastic preform is first formed using injection molding and then the plastic preform is heated and stretch blow molded into the final shape of the bottle 100.

A spray mechanism (not shown) including a valve structure may be provided at the upper end 102 of the bottle to crimp the spray structure to the crimp ring 108. Such a spray mechanism includes, for example, a nozzle from which the product is discharged from the bottle as an aerosol mist. These types of spray mechanisms are well known in the art. And it will be appreciated by those skilled in the art that along these methods, the upper end 102 of the bottle 100 may have a different configuration than that shown to accommodate a different type of spray mechanism. For example, the spray mechanism may be crimped inside the neck region 108 of the bottle 100 at a position adjacent to the opening 112, and the bottle may be configured without the crimp ring 100.

The lower end 106 of the bottle 100 includes a rounded bottom 114. As used herein, the term "rounded" means that the bottom 114 is curved over the region of the lower end 106 of the bottle 100. That is, the "rounded" bottom includes shapes that can be depicted in shapes such as spheres, ellipses, and domes. Generally, as mentioned above, the rounded bottom 114 is advantageous over other shapes because it is less susceptible to problematic stress cracks and stress cracks when the bottle is filled with the product and pressurized. Is. For example, the rounded bottom 114 does not include the contours needed to form a free-standing bottle. The rounded shape of the bottom 114 also offers other advantages. For example, when the plastic is formed into a rounded shape during the blow molding process, elongated crystallinity is formed in the polymer constituting the plastic. In addition, the gate in the injection mold used to form the preform of the bottle may be provided at the thickest portion located in the center of the rounded bottom 114. By being the thickest part, as detailed below, the center expands to a minimum when the bottle is pressurized with the product, to connect the center of the rounded bottom 114 to the base cup. It is a good position to apply the adhesive.

The bottle 100 can be made of a wide variety of plastics. Examples of such plastics include branched or linear polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), polyethylene furanoate (PEF), polyethylene (PE) and polypropylene (PP). Polyethylene (PO), other polyesters, and mixtures thereof can be mentioned.

2 to 6 are views of the base cup 200 according to an embodiment of the present invention. The base cup 200 is configured to be attached to the rounded bottom 114 of the bottle 100, as described in detail below. The base cup 200 includes a side wall 202 that defines the outer circumference of the base cup 200. At the bottom of the base cup 200, a bottom wall 204 extends inward from the cylindrical wall 202, and a plurality of openings 206 are formed in the bottom wall 204. The pedestal portion 208 projects upward from the bottom wall 204 into the space surrounded by the cylindrical wall 202. More specifically, the pedestal portion 208 is formed with a cylindrical wall 210 extending from the bottom wall 204 to the upper wall 212. The recessed region 214 is formed on the upper wall 212.

The base cup 200 may be injection molded resin, thermoformed, or stretch blow molded. Examples of polymeric resins that can be used to form the base cup 200 include PET, PEN, PEF, polypropylene, polyethylene, polyester, polycarbonate, nylon, poly (vinyl chloride) and polystyrene. Some specific examples of commercial resins that can be used to form the base cup 200 are FHR Polypropylene P5M6K-048 (Polypropylene Copolymer) from Flint Hills Resources, Wichita, Kansas. DURATHER (Copolyester). Ultimately, one of ordinary skill in the art will recognize that the choice of material for forming the base cup 200 is determined by several factors, including cost and appearance (eg, colored resin vs. transparent resin). The choice of material for forming the base cup 200 can also be determined by the surface properties of the base cup, as described in detail below.

7 and 8 show the application of the adhesive 300 to the pedestal 208 of the base cup 200 and the subsequent attachment of the bottle 100 to the base cup 200. This process is initiated by the deposition of the adhesive 300 in the recessed region 214 of the pedestal 208. The adhesive 300 may be applied so as to be single-deposited or multi-layered in the recessed region 214. As described below, the adhesive 300 is a hot melt, which means that it is heated to a liquid state and applied to the base cup 200 in a liquid state. The rounded bottom 114 of the bottle 100 then contacts the adhesive 300 so that the adhesive 300 spreads over the recessed region 214 and the top wall 212 of the pedestal 208. The adhesive 300 is then cooled so that the bottle 100 is firmly attached to the base cup 200 by the adhesive 300. The opening 206 in the bottom wall 204 of the base cup 200 increases the rate at which the adhesive 300 cools by allowing air to flow inside the base cup 100 to which the bottle 200 is attached.

During the mounting process, the adhesive 300 is first applied to the base cup 200, unlike the one applied to the bottle 100. Therefore, the adhesive 300 can be slightly cooled before coming into contact with the bottle 100. Such a point is important because the temperature spikes at the points of the plastic bottle 100 coated with the adhesive 300 can potentially soften the plastic and thereby weaken the bottle 100. That is, when the adhesive 300 is first applied to the bottle 100, when the bottle 100 is filled with a pressurized product, the area of the bottle 100 in contact with the adhesive is affected by stress cracks and stress cracks. Cheap. By slightly cooling the adhesive 300 while the adhesive is first applied to the base cup 200, the risk of the adhesive 300 damaging the bottle 100 is reduced.

By configuring the pedestal 208 with the recessed region 212, the base cup 200 can accommodate a small range of dimensions of the bottle 100, eg, variations resulting from manufacturing tolerances in the molding of the bottle 100. Further, the recessed region 212 is formed around the center of the rounded bottom 114 of the bottle 100. As mentioned above, the bottle 100 may be formed during the process of injection molding of the preform, with an injection gate corresponding to the center of the rounded bottom within the finally formed bottle 100. Formed inside. Such a configuration results in the formation of a slight bulge in the center of the rounded bottom 114. The recessed region 212 of the pedestal 208 can accommodate such a bulge in the center of the rounded bottom 114.

As shown in FIG. 8, the adhesive 300 has a recessed region 214 and an upper wall 212 of the pedestal 208 such that the adhesive 300 layer is between the pedestal 208 and the rounded bottom 114 of the bottle 100. Spreads evenly on top. That is, the adhesive 300 ensures that there is little contact between the pedestal 208 of the base cup 200 and the rounded bottom 114 of the bottle 100. The point of contact between the pedestal 208 and the rounded bottom 114 is a fragile point, eg, a layer of adhesive 300 to increase the risk of the base cup 200 actually separating from the bottle 100 during impact. It is very advantageous to separate the pedestal 208 from the rounded bottom 114, when the adhesive is spread over the entire area between the pedestal 208 and the rounded bottom 114. A strong bond is formed between the base cup 200 and the bottle 100. The factors that can be adjusted so that the adhesive 300 spreads reliably on the pedestal portion 208 will be described in detail below.

There are a wide variety of adhesives that can potentially be used to attach the base cup 200 to the bottle 100. However, as mentioned above, some types of adhesives (such as UV curable adhesives and solvent-based structural adhesives) have properties that make them unsuitable for use in pressurized dispensing systems. However, hot melt adhesives have several properties that facilitate the attachment of the base cup to the plastic bottle in a pressurized dispense system. In particular, hot melt adhesives with low surface energy have been found to work well enough to attach the base cup 200 to the bottle 100 in the process described above. Such hot melt adhesives have elastic properties that impart impact resistance to the system. In addition, such hot melt adhesives are flexible enough to keep the base cup 200 firmly attached to the bottle 100 as the bottle expands and contracts. The hot melt adhesive also provides minimal stress when the adhesive is applied to the base cup 200 and the bottle 100. That is, since these adhesives can be applied at a low temperature, the adhesive is less likely to overheat the base cup 200 and the bottle 100, so that the base cup 200 and / or the bottle 100 is attached during the mounting process. There is no risk of melting inside and it can be made even thinner. And the low melting temperature of the adhesive 300 means that the adhesive can be cooled faster to the final mounting state. The hot melt adhesive also induces a lower stress on the bottle 100 than other types of adhesives in view of the shrinkage of the hot melt adhesive being negligible as the adhesive cools. A further property of beneficial hot melt adhesives is the green strength of such adhesives, which is the ability of the adhesive to retain before it cures. In addition, the hot melt adhesive can be quickly cured to a state where it achieves an adhesive strength of 75-100% by drying for only a few seconds.

One of the important properties of the hot melt adhesive 300 is its viscosity when applied to the base cup 200. As described above, the adhesive 300 spreads over the recessed region 214 and the upper wall 212 of the pedestal portion 208. If the viscosity of the adhesive 300 is too high, the adhesive 300 may not spread to the intended area. On the other hand, if the viscosity of the adhesive 300 is too low, the adhesive 300 may spread too much and spill from the edge of the upper wall 212. If the viscosity of the adhesive 300 is too high or too low, the coating of the adhesive 300 in the surface area between the pedestal 208 and the rounded bottom 114 of the bottle 100 is inadequate. This means that the adhesive force between the base cup 200 and the bottle 100 is reduced, and the base cup 200 is easily separated from the bottle 100 when it is pulled, peeled off, or dropped. Throughout the tests, it was found that a hot melt adhesive with a viscosity of 2500 cps to 5000 cps at the coating temperature effectively spreads on the pedestal 208, as described herein. At viscosities in this range, the hot melt adhesive 300 spreads uniformly around the recessed region 214 and the upper wall 212, and a uniform bead of adhesive 300 around the edge of the upper wall 212 adjacent to the cylindrical wall 210. ) Is formed.

The surface energy of the pedestal 208 is another factor that affects how the adhesive 300 spreads over the pedestal 208. The material constituting the surface of the pedestal portion 208 has an intrinsic surface energy that facilitates or does not facilitate the spread of the adhesive 300, and the adhesive 300 is more than a surface having a lower surface energy. Can spread more easily on surfaces with high surface energy. If the surface of the base cup 200 does not have the desired surface energy, the surface may be modified to increase the spread of the adhesive 300. For example, roughening the upper wall 212 and the recessed region 214 causes the adhesive 300 to occlude, thereby creating a gap that allows it to spread more easily on the surface. As will be appreciated by those skilled in the art, the surfaces of the upper wall 212 and the recessed region 214 can be roughened during the process of molding the base cup 200, or can be roughened after the base cup 200 is molded. Another example of treatment that can be applied to the surface of the upper wall and recessed areas to increase the spread of the adhesive is the corona treatment. In such a process, the high voltage discharge is directed to the surface to be modified (eg, the surface of the upper wall 212 and the recessed region 214). As a result, increased chemical bonds can be formed between the corona-treated surface and the adhesive 300. It was found that the corona treatment significantly increased the spread of the adhesive 300 when the base cup was formed from low density polyethylene.

The change in the surface characteristics of the pedestal portion 208 may be selected in combination with the viscosity of the adhesive 300. That is, the surface of the pedestal portion 208 may be modified to achieve the desired spread of the adhesive 300 if it is set to have a particular viscosity when the adhesive 300 is applied. Alternatively, given the particular properties of the surface of the pedestal 208, the viscosity of the adhesive 300 at the time of application can be increased or decreased to achieve the desired spread. In a particular example, when an adhesive with a viscosity of 2500 to 5000 cps is used, the finish of the corresponding VDI 45 on the surface of the recessed region 214 and the upper wall 212 allows the adhesive 300 to spread evenly over the surface of the base cup. A strong bond was formed between 200 and the bottle 100.

For certain hot melt adhesives that can be used in the present invention, it has been found that solid-based hot melt adhesives provide the best combination of properties for attaching the base cup 200 to the plastic bottle 100. Such an adhesive is heated to a melt viscosity, and the higher the heating temperature, the lower the viscosity of the adhesive. These adhesives are applied in a molten state so that the adhesive is cooled to form a bond. In particular, these types of adhesives have minimal shrinkage as they cool, and the density of the applied adhesive is approximately equal to the density of the adhesive after cooling.

In particular, it has been specifically found that a hot melt adhesive based on ethylene vinyl acetate (EVA) or polyamide provides good adhesion between the base cup 200 and the plastic bottle 100. Examples of such adhesives are sold under the trade names HM-302D of Ellsworth Adhesives in Germantown, Wisconsin, and the trade names SCOTCH-WELDTM3792LM and 3789Q of 3M in Maplewood, Minnesota. There is. In one embodiment of the invention, it has been found that an adhesive containing an acrylic component provides the best adhesion between the base cup 100 and a plastic bottle. An example of such an adhesive is Ellsworth Adhesives, which is composed of EVA, acrylics (seems to be poly (butyl acrylate) or poly (ethyl acrylate)) and polystyrene, Germantown, Wisconsin. It is sold under the trade name HM-792. Without being bound by theory, a combination of hot melt components (eg EVA) and acrylics (eg poly (butyl acrylate) or poly (ethyl acrylate)) is placed between the bottle 100 and the base cup 200. It provides molecular-level bonds, and hot-melt adhesive elements donate electrons to the acrylic to provide van der Waals-type bonds.

The hot melt adhesives described herein are easy to handle. These adhesives are melted at about 225-400 ° F with viscosities in the range of 2500 cps to 5000 cps. In addition, these hot melt adhesives have a significant open time, i.e., the maximum time during which an additional pressure can be applied after the adhesive has been applied to form a bond. In this regard, it has been found that acrylic hot melt adhesives have an open time of about 75 seconds and other hot melt adhesives have an open time of about 40 to 50 seconds. Such an extended open time allows the hot melt adhesive to be applied to multiple base cups in the production line before the bottle comes into contact with the adhesive, which provides flexibility in the manufacturing process. NS.

In another embodiment of the invention, another type of adhesive can be used to attach the bottle 100 to the base cup 100. For example, a pressure-sensitive adhesive such as EVA mixed with a styrene block copolymer can also be used. This type of adhesive is sold as H7911-334B by Bostik, Paris, France. Also, Bostik's H20182 is another styrene copolymer-based adhesive that can be used. One of ordinary skill in the art will recognize yet another adhesive that forms a bond between the base cup 200 and the bottle 100 as described herein.

Table 1 shows the tests performed to measure the adhesive strength between the base cup joined to the plastic bottle with respect to the tensile force required to separate the base cup from the bottle. In such tests, plastic bottles were molded from PET and base cups were molded from the disclosed materials. The base cup and bottle have the above-mentioned configuration. The bottle and base cup were sized so that there was an adhesive area of approximately 1.72 square inches between the base cup pedestal and the rounded bottom of the bottle. DEVCON® TRU-BOND ™ PB 3500, a UV curable adhesive by ITW Performance Polymers, Danvers, Mass., Was tested for comparison with hot melt adhesives.

As can be seen from the data in Table 1, the hot melt adhesive containing EVA and acrylic provided the strongest bond between the base cup and the bottle. It should also be noted that all of the hot melt adhesives provided a bond that was at least comparable to UV curable adhesives. However, as mentioned above, hot melt adhesives are advantageous over UV curable adhesives in other ways. For example, hot melt adhesives do not shrink upon curing, while UV curable adhesives shrink significantly, which can adversely affect the plastic structure of the bottle.

As mentioned above, due to potential safety hazards, the pressurized dispense system must be able to withstand impact without failure. In this regard, the U.S. Department of Transportation (DOT) regulations state that pressurized dispense containers, in particular, when dropped from a height of 1.8 m on the bottom of the container when the container is at a 45 ° angle to the ground. It says it has to be endured. The DOT test was applied to the bottle and base cup combinations shown in Table 1. It has been found that base cups and bottles joined with hot melt adhesives generally do not separate on the impact of a drop. The hot melt adhesive provides a flexible layer between the base cup and the bottle that does not fatigue as a result of impact, which contributes to keeping the base cup attached to the bottle in drop tests. It is thought that there is.

The combination of the bottle 100 and the base cup 200 can form a container for a pressurized dispensing system, such as a system for the release of aerosol products. An example of this type of pressurized dispense system 400 is shown in FIGS. 9 and 10. In system 400, the rounded bottom 114 of the bottle 100 is attached to the pedestal 208 of the base cup 200 with hot melt adhesive 300. The base cup 200 allows the system 400 to stand upright on a flat surface, despite having the rounded bottom 114 of the bottle 100. As mentioned above, the adhesive 300 creates a layer between the rounded bottom 114 and the pedestal 208. Thus, the outer rim 216 is the only site of the base cup 200 that comes into contact with the bottle 100. In particular, in this embodiment, the outer rim 216 is arranged adjacent to the body 104 of the bottle 100 so that the rounded bottom 114 is not visible. However, in other embodiments, the outer rim 216 is placed at the bottom of the bottle 100 so that a portion of the rounded bottom 114 is visible. As mentioned above, there is a spray mechanism 402 above the system 400 of the bottle 100. The pressurized product contained in the bottle 100 is released as an aerosol mist through the spray mechanism 402 in this case. Although not shown, a cap may be provided on the spray mechanism 402. In short, the bottle 100 and the base cup 200 provide convenience and charm.

In certain embodiments of the invention, the system 400 is used to release the air purifying composition. Examples of formulations of air purifying compositions can be found in US Patent Application No. 15 / 094,542, which is incorporated herein by reference in its entirety.

Although the present invention has been described as a particular specific embodiment, many additional modifications and variations will be apparent to those skilled in the art in the light of the present disclosure. Therefore, it should be understood that the present invention can be carried out by methods other than those specifically described. Accordingly, exemplary embodiments of the invention should be considered exemplary and not restrictive in all respects, and the scope of the invention is not described above, but by the present application and its equivalents. It should be determined by any claim supported.

The invention described herein can be used in the commercial production of pressurized dispense systems. Such pressurized dispense systems have a wide range of applications, for example, in the aerosol product market.

Claims (18)

A container for a pressurized dispense system
A bottle made of plastic material with an opening at the top and a rounded bottom at the bottom.
A base cup attached to the rounded bottom of the bottle with a hot melt adhesive, with a pedestal located adjacent to the center of the rounded bottom of the bottle and the container upright. With a base cup that has a bottom to allow
Including
The hot melt adhesive spreads over the pedestal to bring the pedestal into contact with the rounded bottom of the bottle between the pedestal and the rounded bottom of the bottle. Form a layer to prevent ,
The pedestal portion includes an upper wall, and a recessed region is formed in the upper wall.
The recessed area is arranged adjacent to the central portion of the rounded bottom of the bottle.
A container in which the adhesive extends over the recessed area and the rest of the upper wall. The container according to claim 1, wherein the hot melt adhesive contains an acrylic component. The container according to claim 2 , wherein the hot melt adhesive contains ethylene-vinyl acetate and the acrylic component. The container according to claim 1, wherein the bottle is formed of polyethylene terephthalate. The container according to claim 1, wherein the base cup is formed of a resin selected from the group composed of polyethylene terephthalate, polypropylene, and polyester. The container according to claim 1, wherein a plurality of openings are provided on the bottom surface of the base cup. A method of forming a pressurized dispense system,
The step of heating the hot melt adhesive so that the hot melt adhesive is in a molten state, and
The step of depositing the melted hot melt adhesive in the recessed region in the upper wall in the base cup pedestal, and
The central region of the rounded bottom of the plastic bottle is pressed against the melted hot melt adhesive so that the melted hot melt adhesive spreads over the recessed area and the rest of the upper wall of the pedestal. Process and
A step of cooling the melted hot melt adhesive in order to attach the base cup to the plastic bottle.
How to include. The melted hot melt adhesive creates a layer between the rounded bottom of the bottle and the pedestal of the base cup so that the rounded bottom of the bottle does not come into contact with the pedestal. The method of claim 7 , wherein the method is formed. The method of claim 7 , wherein the hot melt adhesive has a viscosity of 2,500 cps to 5,000 cps when deposited in the recessed region. The method of claim 7 , wherein when the hot melt adhesive is applied to the recessed area, the hot melt adhesive is heated from about 225 ° F to about 400 ° F. The method according to claim 7 , wherein the hot melt adhesive contains an acrylic component. The method according to claim 11 , wherein the hot melt adhesive contains ethylene-vinyl acetate and an acrylic component. It ’s an aerosol discharge system,
A bottle with an opening at the top and a rounded bottom at the bottom, molded from a plastic material and containing pressurized aerosol products.
A spray mechanism that is attached to the top of the bottle and includes a nozzle capable of ejecting the aerosol product.
Includes a pedestal that is attached to the rounded bottom of the bottle with hot melt adhesive and is located adjacent to the center of the rounded bottom of the bottle so that the aerosol dispense system stands upright. With a base cup that has a bottom
Including
The hot melt adhesive spreads over the pedestal to bring the pedestal into contact with the rounded bottom of the bottle between the pedestal and the rounded bottom of the bottle. Form a layer to prevent ,
The pedestal portion includes an upper wall, and a recessed region is formed in the upper wall.
The recessed area is arranged adjacent to the central portion of the rounded bottom of the bottle.
A system in which the adhesive extends over the recessed area and the rest of the top wall . The system according to claim 13 , wherein the hot melt adhesive contains an acrylic component. The system according to claim 14 , wherein the hot melt adhesive comprises ethylene-vinyl acetate and the acrylic component. 13. The system of claim 13 , wherein the bottle is made of polyethylene terephthalate. 13. The system of claim 13 , wherein the base cup is formed from a resin selected from the group composed of polyethylene terephthalate, polypropylene, and polyester. 13. The system of claim 13, wherein a plurality of openings are provided on the bottom surface of the base cup.

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