The present disclosure is directed to a stick pack pouch or packaging for dispensing a compound.
Stick packs, also called stickpacks, stick pack pouches, uni-sticks, and sachets, are long, flexible pouches used to hold a single-serving or single-dose amount of liquid and/or powder. Shaped like a traditional pack of gum, stick packs are sealed on their two short ends and have a single seal down the back. Stick packs are used to hold a variety of food-based compounds, including single-serve drink mixes, real and artificial sweeteners. Stick packs are also used to hold pharmaceutical agents for both adults and children, including in liquid or powder form. The convenient size and shape minimizes packaging and alleviates problems that can arise when users are forced to measure out a dose of a pharmaceutical agent. Rather than requiring a separate dispenser or measuring device, stick packs are quickly opened by the user and the proper dosage is immediately ready for consumption. The stick packs are often opened by ripping the packaging along a factory-scored perforation. However, these perforations are often inadequately or incorrectly scored, or can otherwise be difficult to open.
Further, for most pharmaceutical uses, stick packs are designed with one or more child-resistant features that prevent children from accessing the liquid or powder inside the stick pack. For example, a multi-step process might be required for opening the stick pack. However, many of these child resistant features also make the stick packs difficult for adults, especially seniors or those with limited mobility or dexterity, from opening the package.
Another problem with conventional stick packs is that the contents can be difficult to administer to another person such a child or senior. In order to pour the powder or liquid into the other person's mouth, typically the length of the stick pack is grasped. However, using too little force can accidentally trap some of the contents, while using too much force can result in spilling off the stick pack during the administration.
Accordingly, there is a continued need in the art for stick packs that are easy to open and dispense by adults, but retain child-resistant features that prevent children from accessing the contents of the stick pack. There is also a continued need in the art for stick packs that facilitate administration of the contents to another person.
The present disclosure is directed to stick pack packaging and methods of manufacture. According to embodiments described or otherwise envisioned herein, the methods and systems are directed to a stick pack with an upper sealed edge, a lower sealed edge, and a longitudinal edge. The upper region has a notch and a horizontal perforation line parallel with the top edge, and a spout formed at least partially in the upper region but not extending past the upper sealed edge. The stick pack is configured to be folded along its longitudinal axis to fold the notch, and when the notch is folded a user can easily tear the top sealed edge along the horizontal perforation line to expose the spout.
According to an aspect is a stick pack design. The stick pack includes: (i) a top sealed portion with a top edge, a horizontal notch parallel with the top edge and passing through the stick pack, and a horizontal perforation line parallel with the top edge; (ii) a bottom edge portion with an elongated sealed portion proximate to a central compartment of the stick pack; (iii) a longitudinal seal extending from the top sealed edge to the bottom edge; and (iv) a spout formed at least partially in the top sealed portion but not extending past the top sealed edge; (v) where the stick pack is configured to be folded along its longitudinal axis to fold the notch, where only when the notch is folded can a user easily tear the top sealed edge along the horizontal perforation line to expose the spout.
According to an embodiment, the stick pack packaging is made of a foil laminate.
According to an embodiment, the horizontal perforation line is a laser-scored perforation line.
According to an embodiment, the horizontal perforation line can be intermittent.
According to an embodiment, the central compartment comprises an insert gas.
According to an embodiment, the stick pack packaging comprises a polyethylene terephthalate layer.
According to an embodiment, the stick pack further comprises a security feature.
According to an embodiment, the stick pack further includes a plurality of central sealed portions formed in the central compartment, where the plurality of central sealed portions are configured to impart a complex flow pattern on the contents within the central compartment when a user squeezes the central compartment.
According to an embodiment, the spout comprises a plurality of channels.
According to an embodiment, the spout is bifurcated along at least a portion of its length, the bifurcation defined at least in part by a central sealed region.
According to an aspect is a stick pack design. The stick pack includes: (i) a central compartment; (ii) a top sealed portion with a top edge, a horizontal notch parallel with the top edge and passing through the foil laminate, and further including a horizontal perforation line parallel with the top edge; (iii) a bottom sealed portion with a bottom sealed edge; (iv) a spout extending from the central compartment and formed at least partially in the top sealed portion; (v) a plurality of central sealed portions formed in the central compartment, where the plurality of central sealed portions are configured to impart a complex flow pattern on the contents within the central compartment when a user squeezes the central compartment; (v) where the stick pack is configured to be folded along its longitudinal axis to fold the notch, such that only when the notch is folded can a user easily tear the top sealed edge along the horizontal perforation line to expose the spout.
According to an embodiment, the bottom sealed edge is proximate the central compartment of the stick pack, and includes an outer wall that extends downwardly from the sealed portion to a bottom edge to define a central cylindrical space configured to receive at least a portion of a user's finger.
According to an aspect is a stick pack design. The stick pack includes: (i) a central compartment; (ii) a top sealed portion with a top edge, a horizontal notch parallel with the top edge and passing through the foil laminate, and further including a horizontal perforation line parallel with the top edge; (iii) a bottom sealed portion comprising a bottom sealed edge; and (iv) a spout extending from the central compartment and formed at least partially in the top sealed portion, where the spout is bifurcated along at least a portion of its length, the bifurcation defined at least in part by a central sealed region; (v) where the stick pack is configured to be folded along its longitudinal axis to fold the notch, such that only when the notch is folded can a user easily tear the top sealed edge along the horizontal perforation line to expose the spout.
According to an embodiment, the stick pack further includes a plurality of central sealed portions formed in the central compartment, where the plurality of central sealed portions are configured to impart a complex flow pattern on the contents within the central compartment when a user squeezes the central compartment.
According to an embodiment, the bottom sealed edge is proximate the central compartment of the stick pack, and includes an outer wall that extends downwardly from the sealed portion to a bottom edge to define a central cylindrical space configured to receive at least a portion of a user's finger.
According to an aspect is a method of manufacturing a stick pack. The method includes the steps of: (i) cutting a stick pack out of a laminate material, where the stick pack comprises a top edge, a bottom edge, and two opposing longitudinal edges; (ii) scoring, using a laser, a horizontal perforation line into the outermost layer of the laminate material from one longitudinal edge to the other longitudinal edge; (iii) creating a horizontal notch through the laminate material near the top edge, where the horizontal notch is aligned along the horizontal perforation line; (iv) sealing the two opposing longitudinal edges together to form a longitudinal sealed edge; (v) sealing the bottom edge of the stick pack to form a central compartment which is open at the top edge; (vi) filling, through the top edge, the central compartment at least partially with a content; and (vii) sealing the top edge to enclose the contents within the central compartment, wherein a spout is formed in the top region near the top edge.
According to an embodiment, the method includes the step of filling through the top edge, the central compartment at least partially with an inert gas.
According to an embodiment, the method further includes the step of forming a plurality of central sealed elements in the central compartment, where the plurality of central sealed portions are configured to impart a complex flow pattern on the contents within the central compartment when a user squeezes the central compartment.
According to an embodiment, where the bottom edge of the stick pack is sealed to comprise a sealed portion proximate to a central compartment of the stick pack, and to further comprise an outer wall that extends downwardly from the sealed portion to a bottom edge to define a central cylindrical space configured to receive at least a portion of a user's finger.
These and other aspects of the invention will be apparent from the embodiments described below.
The present invention will be more fully understood and appreciated by reading the Following Detailed description of the invention in conjunction with the accompanying drawings, in which:
The present disclosure describes various embodiments of stick pack packaging. The stick packs include an upper sealed edge, a lower sealed edge, and a longitudinal edge. The upper region has a notch and a horizontal perforation line parallel with the top edge, and a spout formed at least partially in the upper region but not extending past the upper sealed edge. The stick pack is configured to be folded along its longitudinal axis to fold the notch, and when the notch is folded a user can easily tear the top sealed edge along the horizontal perforation line to expose the spout. The stick pack can also include an administration tab or region that facilitates administration of the contents by one person to another person. The stick pack can also include a plurality of central sealed elements that impart a complex flow pattern on the contents within the central compartment when a user squeezes the central compartment.
Referring now to the drawings, wherein like reference numerals indicate identical or corresponding parts throughout the several views, there is shown in
Stick pack 10 is sealed at three different regions to keep the contents within the closed packaging. The stick pack is sealed at the top region 24, at bottom region 26, and all along sealed edge 20, also called a fin. When the stick pack is filled with a predetermined amount of liquid or powder—shown by dashed fill line 30, although the amount can vary significantly from the shown amount—the contents and the top region seal 24 results in a headspace 28 which contains air or an inert gas. Headspace 28 also prevents spilling or loss of the contents during opening of the stick pack. Headspace 28 allows for resuspension of an oral suspension, such as when the user shakes or kneads the stick pack. The headspace also allows mixing or kneading of the stick pack for gels and solutions, including but not limited to thixotropic gels and solutions.
According to an embodiment, the stick pack contains variable amounts of the contents. A stick pack containing a liquid or gel can comprise, for example, anywhere from 1 ml to 20 mls of liquid or gel, or more. For example, the size of the stick pack 10 can vary depending on the amount of liquid, gel, or powder intended to be stored inside the packaging. Accordingly, smaller stick packs may comprise less than 1 ml, while larger stick packs may comprise more than 20 mls. Common dosages are 2.5, 5, 10, and 20 mls, among many others.
Stick pack 10 comprises a multi-step child-resistant opening mechanism that balances safety with ease of opening. To open the stick pack 10, a user first folds the stick pack 10 longitudinally along axis A-A, shown in
According to an embodiment, the scored perforation line 34 is created in the film prior to formation of the stick pack, or before sealing of any of the edges. The perforation line 34 can be formed, for example, by laser ablation of only the outermost layer of the stick pack, by mechanical knife, or by other methods. According to an embodiment, therefore, perforation line 34 is formed by laser ablation of an outermost aluminum layer of a multi-layer film laminate. A laser-scored perforation line 34 allows for thicker films for the stick pack 10 without significantly increasing the force required to tear along the perforation and open the stick pack. Additionally, according to an embodiment the perforation is formed along both sides of fin 20, which allows the user to easily rip through the fin when opening the stick pack.
Referring to
Stick pack 10 can be made of any suitable material, and can comprise one or a plurality of layers. For example, the innermost layer of the stick pack is preferably made of a material that does not interact with the contents of the stick pack, and does not absorb or otherwise let the contents stick to or diffuse through the material. Examples of suitable layer materials include paper, aluminum, polyethylene (PE), and polyethylene terephthalate (PET), among many others. According to one embodiment, the outermost layer of the stick pack is a paper or aluminum layer upon which logos, instructions, and other labeling materials can be printed. The next layer may be a PET layer, and the innermost layer may be a PE layer. Accordingly, the layers may be aluminum/adhesive/PET/adhesive/PE, in one embodiment.
Referring to
Bottom region or tab 26 of this embodiment provides additional material for gripping during administration. Bottom tab 26 can be completely sealed, or can define a hollow central gripping region. For example, instead of being completely sealed, bottom region 26 of this embodiment can be only sealed at two places; along seal 20 (not shown in the FRONT view of
Referring again to
Referring to
Referring to
According to an embodiment, stick pack 10 can comprise one or more security features. For example, stick packs can be serialized for tracking and identification. Serializing can comprise, for example, labeling with a unique bar code, QR code, or other code that allows for specific identification of the stick pack. All stick packs can be serialized with a similar code format, while some stick packs may be labeled with a specific code format for an individual manufacturer, date, and/or content. As another security feature, the stick pack can be labeled using a specialty or anti-counterfeiting ink. One or more security features allow for increased tracking and identification of pharmaceuticals. For example, a stick pack sold illegally to another individual can be tracked back to the manufacturer, seller, and/or intended user of the stick pack. Using the bar code, QR code, or other unique code. As another example, suspect stick pack can be authenticated by examining the presence or authenticity of anti-counterfeiting ink or other anti-counterfeiting feature.
Referring to
At step 230, the stick pack is folded to align the two longitudinal edges which are sealed to form the longitudinal sealed edge 20. At step 240, the bottom edge of the stick pack is sealed, forming a central compartment that is open at the top.
At step 250 of the method, the contents are introduced to the central compartment. At step 260 of the method, the top edge of the stick pack is sealed. According to an embodiment, a spout is formed in the top edge as it is sealed. The spout can be any of the shapes and sizes disclosed or otherwise envisioned herein.
At optional step 245 of the method, a plurality of central sealed portions is formed in the central compartment. As described above, the plurality of central sealed portions imparts a complex flow pattern on the contents the central compartment when a user squeezes the central compartment. The plurality of central sealed portions can be formed, for example, by heating specific patterns or shapes into the folded stick pack, which causes the opposing internal sides of the central compartment to adhere in the shape or pattern.
While various embodiments have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the function and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the embodiments described herein. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments described herein. It is, therefore, to be understood that the foregoing embodiments are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, embodiments may be practiced otherwise than as specifically described and claimed. Embodiments of the present disclosure are directed to each individual feature, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the scope of the present disclosure.
This application claims the benefit of U.S. Provisional Patent Application Ser. No. 62/259,808, filed on Nov. 25, 2015 and entitled “Stick Pack Design”, the entire disclosure of which is incorporated herein by reference.
Number | Date | Country | |
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62259808 | Nov 2015 | US |