The present invention is directed to containers, more particularly to flexible containers, and more particularly to a flexible bag and method for making the same for holding a dispensable material wherein the bottom portion that forms a dispensing tip includes multiple layers.
Food icings and toppings are commonly packaged in flexible plastic packaging. The end portion of the plastic packaging typically includes a separate tip that is connected to the bottom of the flexible packaging for the proper dispensing of material from the flexible container. The tip is used to control the shape and volume of material dispensed from the flexible container. The flexible walls of the container are not rigid enough to properly function as a dispensing tip. Examples of such tips that are secured to the bottom of a flexible container are disclosed in U.S. Pat. No. 7,757,894 and illustrated in
In view of the current state of the art, there is a need for an improved flexible plastic container that is more economical to produce, and which has a tip that can be easily opened and is integrally formed with the container.
The invention provides, in one aspect, a container for holding and dispensing a food product, the container including a first layer of a material and a second layer of the material. In some embodiments the first layer of the material includes a folded portion across a first end of the first layer of the material. In some embodiments the second layer of the material includes a folded portion across a first end of the second layer of the material. In some embodiments the first layer of the material and the second layer of the material are bonded together across the folded portion of the first layer of the material and the folded portion of the second layer of the material to form a tip portion, the tip portion including a passage between the folded portion of the first layer of the material and the folded portion of the second layer of the material.
The invention provides, in another aspect, a method for manufacturing a container, the method including: providing a sheet of material, where a first fold line and a third fold line are spaced equally from opposite edges of the sheet of material, and where a second fold line bisects the first fold line and the third fold line; folding the sheet of material across the first fold line and across the third fold line; folding the sheet of material across the second fold line to form a folded sheet of material, where an edge of the folded sheet of material includes four layers of the sheet of material resulting from folding the sheet of material along the first fold line, the second fold line, and the third fold line; perforating the edge of the folded sheet of material; and sealing a first area and a second area. In some embodiments, the first sealing area and the second sealing area each bond folded portions of the folded sheet of material. In some embodiments, the first sealing area extends away from the edge of the folded sheet of material toward an opposite edge of the folded sheet of material. In some embodiments, second sealing area extends from the edge of the folded sheet of material at a location of the edge of the folded sheet of material spaced away from the first sealing area and toward the opposite edge of the folded sheet of material.
Other features and aspects of the invention will become apparent by consideration of the following detailed description and accompanying drawings.
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the accompanying drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
A user 103 may express the food product 102 from the container 100 by squeezing the container 100 and directing the food product 102 using the tip 101 as the food product 102 passes through the tip 101. The tip 101 may further be used to control the shape and/or volume of the food product 102 expressed from the container 100, as the container 100 has flexible walls which are not rigid enough to function as a dispensing tip. For example, the food product 102 may be expressed from the container 100 into a dollup of food product 104. In some embodiments, a portion of the container 100 extending beyond the tip 101 may be cut and/or removed to allow the food product 102 to pass from the container 100 and through the tip 101. Examples of such tips that are secured to the bottom of a flexible container are disclosed in U.S. Pat. No. 7,757,894. Disadvantages to such a configuration include added inventory and inventory management for the separate tip 101 and container 100, additional costs to manufacture, ship and package the separate components, processing time including an additional step of adhering or otherwise securing the tip 101 to the container 100, and complexity of the end product and manufacturing processes.
To address these and other disadvantages known in the art, Applicant surprisingly and unexpectedly found a container and method according to the embodiments disclosed herein. For example,
Next, the method of manufacturing the container 100 will be described. However, the steps provided herein are not necessarily provided in the order in which they occur, but rather may be reordered as best fits a given manufacturing line and/or desired end-product. First, step 10 includes providing roll stock 202, preferably including a roll mount portion 203 such that the roll stock 202 can be unrolled into flat roll stock 202. The roll stock 202 may include a single or multiple materials selected from, for example, plastics, plastic films, plastic films made out of low-density polyethylene (“LDPE”), high density polyethylene (“HDPE”), polyester (“PET”), oriented polypropylene (“OPP”), polyolefin, biaxially-oriented polypropylene (“BOPP”), nylon, biaxially-oriented nylon, and laminated materials such as poly to poly, prop to poly, nylon to poly, prop to prop, pet to poly, and the like. The roll stock 202 may have a thickness of about 1 mil to about 6 mil, however, other thicknesses may be used.
Next, step 20 includes a single folding operation or multiple folding operations. For example, a first fold may occur along a first fold line 204, which may fold the roll stock 202 in half along a direction 214 that the roll stock 202 extends as the roll stock 202 is unrolled from the roll mount portion 203. Additionally, one or more secondary folds may occur at second fold lines 205. For example, each of the secondary folds along the second fold lines 205 may similarly occur along the direction 214 the roll stock 202 extends as the roll stock 202 is unrolled from the roll mount portion 203. However, unlike the first fold, in some embodiments the secondary folds may only fold over edge portions 215 of the roll stock 202, and may fold over a surface area of the roll stock 202 that is less than a surface area of the first fold.
Additionally, the secondary fold along the secondary fold lines 205 may be repeated. As shown in
Step 30 may then be undertaken. Step 30 may include multiple cutting and/or sealing operations. In the embodiment provided in
The above-provided cuts along the tip portion 206, the tapered wall 207, the tapered wall 208, the edge wall 209, and the edge wall 210, collectively the “container edges,” may further include bonding operations to seal the folds of the roll stock 202 provided in step 20 to one another. In some embodiments, the bonding operation may occur prior to, during, and/or after the cutting steps of step 30. In one non-limiting example, the container edges can be ultrasonic welded together or bonded together by a melted seal/seam. In another non-limiting example, one or more of the container edges can be adhesively connected together and then one or more of the remaining container edges can also be bonded together by ultrasonic welding or by a melted seal/seam. The bonding method used to bond together the container edges may be a single type of bonding or may include multiple types of bonding.
The cutting and/or sealing operation of the tip portion 206 may be different from the cutting and/or sealing operations of the rest of the container edges. For example, the tip portion 206 may include a tip pattern. For example, the tip pattern may include a plurality of chevrons spaced about an outer circumference of the tip portion 206. Such an embodiment is shown in
In some embodiments, when the portion formed below the tip pattern 216 is removed from the rest of the tip portion 206 via a cutting operation, a removable seal 217 and/or a cap may optionally be secured to the tip portion 206-end of the container 200 to close and seal the tip portion 206 of the container 200. The removable seal 217 may be provided if the tip portion 206 is formed by a cutting operation that has resulted in the tip portion 206 not forming a seal, and/or may be provided if serrations and/or scoring have weakened or otherwise compromised the strength of an existing seal about the tip portion 206. The removable seal 217 may be secured to the container 206, for example, by an adhesive. In some embodiments, the removable seal 217 (when used) is generally a single piece of flexible material (e.g., flexible plastic material, etc.) that is positioned to cover and to seal the tip portion 206 of the container 200. An exemplary embodiment of the removable seal 217 is shown in
At the completion of step 30, the container 200 is formed. Then, in step 40, the container 200 is filled with the food product 201. The container 200 may be filled from the rear portion 211 of the container 200, through a cut or other aperture forming a rear opening 212 or otherwise formed through the container wall 213. In alternative embodiments, the container 200 may be filled with the food product 201 via an opening in the tip portion 206, or injected through other location(s) along the container wall 213. Once the container 200 is filled with the food product 201, the opening through which the food product 201 was inserted into the container 200 may be closed and/or sealed. For example, if the container 200 is filled using the rear opening 212, the rear opening 212 may be closed and sealed by a melted seam or ultrasonic seal; however, other sealing processes and/or devices can be used (e.g., adhesive, a piece of material connected over the rear opening 212, etc.).
When the container 200 of the illustrated embodiment is filled with the food product 201, a cross-sectional area of the container 200 is tapered from the tip portion 206 to the rear portion 211, and the container 200 has a generally conical shape when the container 200 is filled with the food product 201. As can be appreciated, the shape of the container 200 is non-limiting, as any permutation of folding, cutting and/or sealing operations may be undertaken in steps 20 and 30 to shape the container 200 as desired. Further, as illustrated in
When steps 10 and 20 are complete, the roll stock 202 is transformed into folded roll stock 313, from which the container 200 can be cut away. Step 30 may be performed to remove the container 200 from the folded roll stock 313. The step 30 may include a cutting operation 303, which may include a first cut 304, a second cut 305, a third cut 306, a fourth cut 307, and a fifth cut 308. As provided in detail above with reference to
A folding operation 413 may then be performed. In the folding operation 413, numerous folding operations may be performed, which may include but are not limited to folding the roll stock 202 across the second fold lines 205. After the folding operation 413 is performed, or alternatively without the folding operation 413 being performed, the roll stock 202 may pass over additional rollers 421, and be passed to a folding device 415. The folding device 415 may include a forming shoulder 419 positioned around a forming tube 418 and may further include a gap 420 positioned between the forming tube 418 and the forming shoulder 419. The folding device 415 may also include an advancing device 416 and a vertical sealing device 423. In some embodiments, the roll stock 202 may be pulled over the forming shoulder 419 and through the gap 420. As the roll stock 202 passes over the forming shoulder 419, the roll stock 202 is formed into a generally cylindrical shape. Then, the roll stock 202 is vertically sealed into the generally cylindrical shape with the vertical sealing device 423. In some embodiments, the vertical sealing device 423 may seal the tip portion 206. Also, in some embodiments, as the roll stock 202 passes over the forming tube 418, a filling device 414 positioned within the forming tube 418 fills the generally cylindrical shape with the food product 201.
Further, after the roll stock 202 passes through and out of the folding device 415, the roll stock 202 may be advanced to a horizontal sealing and cutting device 417. The horizontal sealing and cutting device 417 may perform a sealing and/or cutting operation, which may seal the food product 201 inside the generally cylindrical roll stock 202 by cutting and sealing successive ends of the containers 200 as the successive ends are cut from the roll stock 202.
After the folding operation 401 is performed, or alternatively without the folding operation 401 being performed, the roll stock 202 may pass along a direction of feed 422 over the rollers 421 and be passed to a first sealing operation 402 performed with a first sealing element 407. The first sealing operation 402 may seal the tip portion 206 of the container 200.
The roll stock 202 may then be passed along the direction of feed 422 to a second sealing operation 403 performed with a second sealing element 408. The second sealing element 408 may seal, for example, the edge wall 209 and the edge wall 210 of the container 200. Note that in the exemplary embodiment provided herein, the second sealing operation 403 may seal the container 200 along two, non-adjacent edges of the container 200.
The roll stock 202 may then be passed along the direction of feed 422 to a filling operation 404. In some embodiments, during the filling operation 404 the food product 201 may be injected into a cavity defined by the edge wall 209, the edge wall 210, and the tip portion 206, and injected through the rear opening 212. The filling operation 404 may be performing by injecting the food product 201 using a filling device 409. In some embodiments, a cutting operation may first be required to create the rear opening 212.
The roll stock 202 may then be passed along the direction of feed 422 to a third sealing operation 405 performed with a third sealing element 410. In some embodiments, the third sealing element 410 may seal and/or close the rear portion 211.
The food product 201 may now be enclosed completely within the container 200 while the container 200 is still attached to the roll stock 202. Therefore, the roll stock 202 may be passed along the direction of feed 422 to a cutting operation 406 that may be performed using a cutting element 411. The cutting element 411 may separate individual containers 200 from the roll stock 202, and further may perform scoring and/or perforation operations. For example, the cutting operation 406 may perform a perforation operation on the tip portion 206 of the container 200.
For clarity, a summarized method of producing the container 200 is provided below. In one non-limiting embodiment, the method of producing the container 200 includes the steps of:
For example,
It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efficiently attained, and since certain changes may be made in the constructions set forth without departing from the spirit and scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. The invention has been described with reference to preferred and alternate embodiments. Modifications and alterations will become apparent to those skilled in the art upon reading and understanding the detailed discussion of the invention provided herein. This invention is intended to include all such modifications and alterations insofar as they come within the scope of the present invention. It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.
Various features of the invention are set forth in the following claims.
This application claims priority to co-pending U.S. Provisional Patent Application No. 62/741,154 filed on Oct. 4, 2018, the entire content of which is incorporated herein by reference.
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PCT/US2019/054682 | 10/4/2019 | WO |
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WO2020/072894 | 4/9/2020 | WO | A |
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Number | Date | Country | |
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