Toothpastes, ointments, creams, and other fluid products and materials are commonly packaged for shipment and sale within a flexible tube. The flexible tube, which can be manufactured from a plastic or other polymer, a metal alloy, composites, etc., provides resilient protection for the product during shipment and storage, and allows controlled dispensing of the product by the user.
Some materials stored within the tube have a relatively high chemical stability, and thus the volume of material within the sealed tube remains largely unchanged. Other materials, for example dentifrices including hydrogen peroxide, may be more chemically unstable and/or may outgas during shipment and storage, thereby resulting in pressure changes within the sealed tube. An increase in pressure within the tube can result in inflation and bulging of the tube, an unattractive tube appearance, product expulsion and spillage from the tube when the tube is unsealed, and may result in decreased customer satisfaction and brand loyalty. In extreme cases, a pressure increase can result in rupturing of side and/or end seams, thereby rendering the product defective and unusable.
A flexible tube for packaging a paste or other material that overcomes the deficiencies of some conventional tubes would be desirable.
The following presents a simplified summary in order to provide a basic understanding of some aspects of one or more embodiments of the present teachings. This summary is not an extensive overview, nor is it intended to identify key or critical elements of the present teachings, nor to delineate the scope of the disclosure. Rather, its primary purpose is merely to present one or more concepts in simplified form as a prelude to the detailed description presented later.
In an embodiment, a tube for storing and dispensing a product can include a tube body having a tube wall and at least one crease in the tube body, wherein the tube is configured to store the product within an interior of the tube, the at least one crease in the tube body is configured to deflect from a contracted position toward an expanded position in response to an increase in pressure within the interior of the tube, the tube comprises a first volume when the at least one crease is in the contracted position, the tube comprises a second volume when the at least one crease is in the expanded position, and the second volume is greater than the first volume.
In another embodiment, a method for accommodating an increasing pressure within a factory-sealed tube can include placing a product within an interior of a tube comprising a tube body and at least one crease in the tube body wherein, subsequent to placing the product within the tube, the at least one crease is in a contracted position. The method can further include sealing the product within the interior of the tube using a factory seal and, with the product sealed within the interior of the tube by the factory seal, deflecting the at least one crease from the contracted position to an expanded position during an increase in pressure within the interior of the tube.
Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
It should be noted that some details of the FIGS. have been simplified and are drawn to facilitate understanding of the present teachings rather than to maintain strict structural accuracy, detail, and scale.
The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
As used throughout, ranges are used as shorthand for describing each and every value that is within the range. Any value within the range can be selected as the terminus of the range. In addition, all references cited herein are hereby incorporated by referenced in their entireties. In the event of a conflict in a definition in the present disclosure and that of a cited reference, the present disclosure controls.
An embodiment of the present teachings can provide a tube for a fluid product, for example a gel product or a paste product such as a toothpaste including, for example, hydrogen peroxide, such that the tube reduces or eliminates the adverse effects of product expansion during, for example, shipping and/or storage. In various embodiments, one or more creases are formed as part of one or more walls of the tube. For purposes of the present disclosure, unless otherwise indicated, a “container” refers to a tube, receptacle, vessel, vial, bottle, canister, can, box or other holder that is used to store and/or ship a product within the container. While the embodiments below are discussed with regard to a “tube” for simplicity of explanation, it will be understood that the various embodiments may be used with other types of containers, as well as with a tube. Further, for purposes of the present disclosure, a “crease” refers to a pleat, fold, (e.g., an accordion fold), or dimple in the tube, including in the tube body, tube shoulder, and/or tube cap, that moves, unfolds, expands, or otherwise deflects under increasing pressure within the tube; e.g., when the pressure reaches a level sufficient to exert a force great enough to cause the crease to move, unfold, expand or otherwise deflect. A “crease” also refers to a lightly tacked region, such as a lightly tacked seam, fold, dot, or dimple, for example in the tube body, that deflects, releases or otherwise unbonds under increasing pressure within the tube; e.g., when the pressure reaches a level sufficient to exert a force great enough to cause the tacked region to unbond or release. The lightly tacked region may be formed using, for example, heat, pressure, and/or an adhesive. The crease may be visible on an exterior of the tube unless, for example, covered by a separate label, sleeve, or other covering (not individually depicted for simplicity). The product is placed within the tube, (e.g., during manufacturing), and then the tube is factory sealed, for example, with a threaded cap, a friction cap, a foil seal, and/or other cover. If expansion of the product within the factory-sealed tube occurs, the increased or increasing pressure within the tube deflects, moves, unfolds, articulates, actuates, or releases the one or more creases, for example from an initial contracted position to a deflected or expanded position. The tube has a first volume when in the crease or creases are in the contracted position and a second volume when in the expanded position, where the second volume is greater than the first volume. In effect, the interior volume of the tube is increased as needed and the disclosed tube maintains a more normal pressure within the tube compared to a tube that does not include the one or more creases. Thus uncontrolled bulging or rupturing of the seams is decreased or eliminated. The shape and location of the one or more creases can be designed and controlled to provide a tube that is attractive in appearance regardless of whether the one or more creases are in their initial contracted position or their pressure-induced deflected or expanded position.
In various embodiments, the creases can effectively increase the volume of the tube under or in response to increasing or increased pressure from within the tube caused, for example, by outgassing of the product within the tube or some other effect. For example, depending on the area, depth, and number of the creases, the storage volume within the tube can be increased to maintain a desired pressure or pressure range within the interior of the tube. As a result of increasing pressure, the areas of the factory-sealed tube that form the creases deflected and/or expanded to, in effect, increase the volume of the interior of the factory-sealed tube, thereby maintaining pressure within the tube at a more desirable level, preferably at or near 1 atmosphere. In an embodiment, the deflection and/or expansion of the one or more creases may occur at an internal tube pressure of less than about 35 pounds per square inch (psi), or at less than about 25 psi, or at less than about 20 psi. In an embodiment, the tube has a first volume when the one or more creases are in an initial contracted position and a second volume when the one or more creases are in a deflected, expanded position, where in the second volume is from about 5% to about 40% greater, or from about 5% to about 30% greater, or from about 10% to about 20% greater than the first volume.
Various embodiments of the one or more creases are contemplated. For example,
In the embodiment of
Another embodiment for a tube 40 having an expandable volume is depicted in
Various modifications to the
In another embodiment as depicted in
Depending on the area of the attachment and the material and/or method used to tack two interior surfaces together, the tacked surfaces can be configured to release at an expansive pressure of from about 35 psi or less, or from about 25 psi or less, or from about 20 psi or less, which would be a sufficient amount of pressure to untack the interior surfaces.
Various implementations of the creases including lightly tacked regions are contemplated. For example,
Thus, in accordance with the description above, various embodiments of the product tube described herein can provide a tube that reacts to and accommodates internal pressure increases and has a more stable pressure within the tube during expansion of the product inside. During product expansion, the creases deflect in response to an increasing pressure within the tube, resulting in an increase in the volume within the tube, thereby maintaining a more even pressure compared to prior conventional tubes. With some conventional tubes, an increase in pressure within the tube can result in inflation and bulging of the tube, an unattractive tube appearance, and/or product expulsion and spillage from the tube when the tube is unsealed, which may result in decreased customer satisfaction and brand loyalty. In extreme cases, a pressure increase inside a conventional tube can result in rupturing of side and/or end seams, thereby rendering the product defective and unusable. A tube in accordance with the present teachings can reduce or eliminate these deficiencies found with conventional tubes.
In each of the embodiments, the tube can be designed and configured such that the pressure required to dispense the product from the opening 20 in the nozzle 18 (
It is contemplated that an embodiment can include two or more crease embodiments, for example, two or more of the embodiments as depicted and/or described with reference to
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the present teachings are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements. Moreover, all ranges disclosed herein are to be understood to encompass any and all sub-ranges subsumed therein. For example, a range of “less than 10” can include any and all sub-ranges between (and including) the minimum value of zero and the maximum value of 10, that is, any and all sub-ranges having a minimum value of equal to or greater than zero and a maximum value of equal to or less than 10, e.g., 1 to 5. In certain cases, the numerical values as stated for the parameter can take on negative values. In this case, the example value of range stated as “less than 10” can assume negative values, e.g. −1, −2, −3, −10, −20, −30, etc.
While the present teachings have been illustrated with respect to one or more implementations, alterations and/or modifications can be made to the illustrated examples without departing from the spirit and scope of the appended claims. For example, it will be appreciated that while the process is described as a series of acts or events, the present teachings are not limited by the ordering of such acts or events. Some acts may occur in different orders and/or concurrently with other acts or events apart from those described herein. Also, not all process stages may be required to implement a methodology in accordance with one or more aspects or embodiments of the present teachings. It will be appreciated that structural components and/or processing stages can be added or existing structural components and/or processing stages can be removed or modified. Further, one or more of the acts depicted herein may be carried out in one or more separate acts and/or phases. Furthermore, to the extent that the terms “including,” “includes,” “having,” “has,” “with,” or variants thereof are used in either the detailed description and the claims, such terms are intended to be inclusive in a manner similar to the term “comprising.” The term “at least one of” is used to mean one or more of the listed items can be selected. Further, in the discussion and claims herein, the term “on” used with respect to two materials, one “on” the other, means at least some contact between the materials, while “over” means the materials are in proximity, but possibly with one or more additional intervening materials such that contact is possible but not required. Neither “on” nor “over” implies any directionality as used herein. The term “conformal” describes a coating material in which angles of the underlying material are preserved by the conformal material. The term “about” indicates that the value listed may be somewhat altered, as long as the alteration does not result in nonconformance of the process or structure to the illustrated embodiment. Finally, “exemplary” indicates the description is used as an example, rather than implying that it is an ideal. Other embodiments of the present teachings will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the present teachings being indicated by the following claims.
Terms of relative position as used in this application are defined based on a plane parallel to the conventional plane or working surface of a workpiece, regardless of the orientation of the workpiece. The term “horizontal” or “lateral” as used in this application is defined as a plane parallel to the conventional plane or working surface of a workpiece, regardless of the orientation of the workpiece. The term “vertical” refers to a direction perpendicular to the horizontal. Terms such as “on,” “side” (as in “sidewall”), “higher,” “lower,” “over,” “top,” and “under” are defined with respect to the conventional plane or working surface being on the top surface of the workpiece, regardless of the orientation of the workpiece.
Filing Document | Filing Date | Country | Kind |
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PCT/US15/26859 | 4/21/2015 | WO | 00 |