Container and bottom end construction therefor
11760529 · 2023-09-19
Assignee
Inventors
Cpc classification
B65D81/3869
PERFORMING OPERATIONS; TRANSPORTING
B65D3/14
PERFORMING OPERATIONS; TRANSPORTING
B31B2120/004
PERFORMING OPERATIONS; TRANSPORTING
B65D3/22
PERFORMING OPERATIONS; TRANSPORTING
B31B2110/10
PERFORMING OPERATIONS; TRANSPORTING
B31B2120/50
PERFORMING OPERATIONS; TRANSPORTING
International classification
B65D3/22
PERFORMING OPERATIONS; TRANSPORTING
Abstract
A container with a deep recessed bottom end construction is provided. The container includes an inner receptacle having a sidewall and a bottom wall defining an interior volume within the receptacle. The container further includes an outer sleeve wrapped around the inner receptacle with a lower end extending below the lower edge of the receptacle to form a deep bottom recess within a lower portion of the container. The lower end of the receptacle sidewall has a taper angle that is different from a taper angle of an upper portion of the sidewall. The lower end of the receptacle sidewall may engage or contact the inner surface of the outer sleeve. The outer sleeve may include reverse bend and/or a second bottom wall onto which a lower end of the receptacle may sit.
Claims
1. A multi-walled container comprising: an inner receptacle including a sidewall, an uppermost edge, a lowermost edge, and a first bottom wall, wherein an upper portion of the sidewall extending below the uppermost edge has a first taper angle and a lower end of the sidewall extending above the lowermost edge of the receptacle has a second taper angle; and an outer sleeve having an inner surface and an outer surface, the outer sleeve at least partially surrounding the inner receptacle; wherein at least a portion of the lowermost edge of the lower end of the receptacle sidewall is in contact with the inner surface of the outer sleeve; wherein a lower end of the outer sleeve extends beyond and is located below the lowermost edge of the receptacle sidewall; wherein the lower end of the outer sleeve comprises a reverse bend portion having an upper terminal edge; wherein at least a portion of the lowermost edge of the lower end of the receptacle sidewall is in contact with the upper terminal edge of the reverse bend.
2. The container of claim 1, wherein the first bottom wall includes a downwardly depending annular skirt secured the receptacle sidewall.
3. The container of claim 2, wherein the lower end of the receptacle sidewall forms a reverse bend portion at least partially surrounding the annular skirt of the first bottom wall.
4. The container of claim 1, wherein a circumferential gap is defined between the inner receptacle sidewall and the outer sleeve.
5. The container of claim 1, wherein the first taper angle is between about 0° and about 30° measured from vertical and wherein the second taper angle is about between about −10° and about 2° measured from vertical.
6. The container of claim 1, wherein the first taper angle is between about 3° and about 5° measured from vertical and wherein the second taper angle is about between about −1° and about 1° measured from vertical.
7. The container of claim 1 further comprising an outwardly rolled upper lip that includes the uppermost edge.
8. The container of claim 1 wherein the inner receptacle and the outer sleeve are constructed from a paperboard material.
9. A multi-walled container comprising: an inner receptacle including a sidewall, an uppermost edge, a lowermost edge, and a first bottom wall, wherein a frustoconical upper portion of the sidewall extending below the uppermost edge has a first taper angle and a lower end of the sidewall extending above the lowermost edge of the receptacle has a second taper angle; and an outer sleeve having an inner surface and an outer surface, the outer sleeve at least partially surrounding the inner receptacle and having a lower end that extends beyond and is located below the lowermost edge of the receptacle sidewall; wherein at least a portion of the lowermost edge of the lower end of the receptacle sidewall is in contact with the inner surface of the outer sleeve; wherein the lower end of the outer sleeve comprises a reverse bend portion having an upper terminal edge, and wherein at least a portion of the lowermost edge of the lower end of the receptacle sidewall is in contact with the upper terminal edge of the reverse bend of the outer sleeve.
10. A method of forming multi-walled container comprising: obtaining an inner receptacle including a sidewall, an uppermost edge, a lowermost edge, and a bottom wall, wherein an upper portion of the sidewall extending below the uppermost edge has a first taper angle; forming a lower end of the receptacle sidewall such that the lower end of the sidewall extending above the lowermost edge of the receptacle has a second taper angle different from the first taper angle; obtaining an outer sleeve having an inner surface and an outer surface; forming a reverse bend portion into a lower end of the outer sleeve, the reverse bend portion having upper terminal edge; combining the outer sleeve and inner receptacle such that at least a portion of the lowermost edge of the lower end of the receptacle sidewall is in contact with the inner surface of the outer sleeve; and positioning the outer sleeve relative to the inner receptacle such that at least a portion of the lowermost edge of the lower end of the receptacle sidewall is in contact with the upper terminal edge of the reverse bend of the outer sleeve.
11. A multi-walled container comprising: an inner receptacle including a sidewall, an uppermost edge, a lowermost edge, and a first bottom wall, wherein an upper portion of the sidewall extending below the uppermost edge has a first taper angle and a lower end of the sidewall extending above the lowermost edge of the receptacle has a second taper angle; and an outer sleeve at least partially surrounding the inner receptacle, the outer sleeve including an inner surface and an outer surface, and a lower end comprising a reverse bend portion having an upper terminal edge; wherein the lower end of the outer sleeve extends beyond and is located below the lowermost edge of the inner receptacle sidewall; wherein at least a portion of the lowermost edge of the lower end of the inner receptacle sidewall is in contact with the inner surface of the outer sleeve; and wherein at least a portion of the lowermost edge of the lower end of the inner receptacle sidewall contacts and is seated on the upper terminal edge of the reverse bend portion of the outer sleeve.
Description
DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
(1) In the accompanying drawings, which form a part of the specification and are to be read in conjunction therewith in which like reference numerals are used to indicate like or similar parts in the various views:
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
DETAILED DESCRIPTION OF THE INVENTION
(12) The invention will now be described with reference to the drawing figures, in which like reference numerals refer to like parts throughout. For purposes of clarity in illustrating the characteristics of the present invention, proportional relationships of the elements have not necessarily been maintained in the drawing figures.
(13) The following detailed description of the invention references specific embodiments in which the invention can be practiced. The embodiments are intended to describe aspects of the invention in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments can be utilized and changes can be made without departing from the scope of the present invention.
(14) Referring to the figures, the present invention is directed to a cup or container 10 and a bottom end construction 100 therefor as illustrated in the several figures. While the container 10 may be adapted for holding food and drink, it will be appreciated that it can also be used in connection with the storage and transportation of other items. In addition, the bottom end construction 100 as described herein may be suitably utilized in connection with several different types and styles of containers 10 whether or not described specifically herein.
(15) According to one embodiment of the present invention, bottom end construction 100 can be utilized with containers 10 having an increased sidewall height. For example, it is often desirable to have containers 10 of different sizes (e.g., small, medium, large, etc.) for use in food- and drink-service applications while maintaining a common overall upper edge diameter to allow the same lid to be used with each different sized container. One common method for providing such containers 10 is to increase the height of the sidewall of the larger containers 10. However, due to the increased height of the sidewall, the containers 10 are more susceptible to becoming stuck together when nested.
(16) Bottom end construction 100 of the present invention can provide a deep overall bottom recess at the lower end of the containers 10, which can reduce the chance that stacked or nested containers 10 will become inadvertently stuck together because the inner container 10a can rest on the bottom wall 18 of the outer container 10b (as generally depicted in
(17) Examples of two primary embodiments are illustrated in the drawings and described herein. A first embodiment is depicted in
(18) Referring to the figures, container 10 may generally include an inner receptacle 12, an outer wrapper or sleeve 14, and beads of adhesive 30 applied between inner receptacle 12 and outer sleeve 14 for optionally creating an insulating void space or air gap 32 therebetween. As best shown best in
(19) In certain embodiments of the present invention, container 10 can also include an intermediate layer of insulating material or an air gap positioned between inner receptacle 12 and outer sleeve 14. In other embodiments, outer sleeve 14 may alternatively be attached directly to inner receptacle 12 with no air gap or insulating layer therebetween. In yet further embodiments, outer sleeve 14 may alternatively comprise a uniform thickness, thicker than the thickness of inner receptacle 12, such that outer sleeve 14 may act as an insulating layer.
(20) In one embodiment, receptacle 12 is constructed in accordance with a well-known existing design. Sidewall 20 of receptacle 12 can be formed from a blank and wrapped around a mandrel. Sidewall 20 may include an overlapping seam (not shown) extending generally longitudinally between the top and bottom ends of receptacle 12. The seam (not shown) can be formed by adhering the overlapping margin portions of sidewall 20 together with adhesive, sonic welding or the like. The exposed edges of sidewall 20 at the seam can be sealed to prevent the migration of liquids into the material comprising sidewall 20. At its top end, receptacle 12 may be formed with an outwardly rolled upper lip 22. At its lower end, receptacle 12 may be formed with a bottom panel or circular bottom wall 18 having a downwardly depending annular leg or skirt 26 that is secured to receptacle sidewall 20 by a reverse bend portion 28 of receptacle sidewall 20. As shown, the lower end of receptacle sidewall 20 extends along the outer surface of the depending annular skirt 26, wraps under a bottom edge or lower edge thereof, and extends upwardly along the interior surface of annular skirt 26 toward the bottom panel 18. The lower portion of the receptacle sidewall 20 forming the reverse bend 28 may be crimped around the annular skirt 26 to create a liquid tight seal therebetween. This securement may be achieved by adhesive, sonic welding, sealants or the like. It will be understood that other lower end structures, including those not having a reverse bend, are also within the scope of the present invention.
(21) Depending on the particular embodiment, both bottom wall 18 and receptacle sidewall 20 may be die cut from a larger sheet or roll (not shown) or material; and/or may be formed from a unitary blank or multiple blank components depending on the particular embodiment of the present invention. According to one embodiment, receptacle 12 and outer sleeve 14 may be constructed of paperboard or a similar material, such as but not limited to, a coated or laminated paperboard material in order to resist migration of liquids contained within the interior volume defined by sidewall 20 and circular bottom wall 18. However, it will also be appreciated that receptacle 12 and outer sleeve 14 may be constructed from any other suitable type of material or combination of materials. Other constructions for receptacle 12 and outer sleeve 14 are within the scope of the present invention. In alternative embodiments (not shown), receptacle 12 and 14 may be constructed using any other suitable method for constructing paperboard or similar containers (even plastic containers) now known or hereinafter developed. Receptacle 12 and outer sleeve 14 may be constructed of materials having generally uniform thickness, or may be constructed to include embossments, debossments, or other features that creates a non-uniform thickness.
(22) Outer sleeve 14 may be applied to or wrapped around sidewall 20 of inner receptacle 12 and again can be affixed to sidewall 20 with an adhesive in one embodiment. In an alternative embodiment, outer sleeve 14 may be formed separately around a mandrel and then the inner receptacle 12 may be slid into the formed outer sleeve 14 (or conversely the formed outer sleeve 14 may be slid around the inner receptacle 12). Adhesive 30 may optionally be applied to secure the outer sleeve 14 to the inner receptacle 12. Adhesive 30 can be applied in the form of horizontal hot glue bands (or HGBs) that have a defined thickness T forming an air gap 32 between receptacle 12 and outer sleeve 14. Adhesive 30 may be applied between all or a portion of the height between receptacle 12 and outer sleeve 14. According to certain embodiments, outer sleeve 14 may be wrapped around inner receptacle 12 and seam 16 may be secured using an adhesive or other suitable securement means. It will be appreciated that the adhesive may be applied in any suitable arrangement or pattern, including but not limited to one or more continuous or intermittent horizontal bands, one or more vertical stripes, lines, dots, or any other suitable application of adhesive. In addition, outer sleeve 14 may be secured to inner receptacle 12 using any suitable method, including but not limited to cold glues, hot melts, sonic welding, sealants and the like. According to additional embodiments, an insulating liner and/or one or more spacers may be provided between receptacle sidewall 20 and outer sleeve 14. In other embodiments, where adhesive is not applied or is only minimally applied, the outer sleeve 14 may be retained relative to the inner receptacle 12 via other means, such as by a friction fit or an interlocking engagement, for example.
(23) While outer sleeve 14 can include a vertically-extending overlapping side seam 16 in one embodiment when it is formed, it is recognized that in other embodiments seam 16 may be configured as an end-to-end seam, butt seam, or any other suitable type of seam or configuration. Outer sleeve 14 may be configured to have a generally conforming frustoconical shape with a generally circular transverse cross sectional shape when wrapped around receptacle 12. Again, the taper of the overall container 10 can permit nesting or stacking for storage and shipping.
(24) In one embodiment, upper end of outer sleeve 14 is not folded or rolled, and its upper edge is left unfinished. Top edge 24 of outer sleeve 14 can be configured to generally align with and be positioned just below rolled upper edge 22 of receptacle 12, while the bottom edge 104 of outer sleeve 14 can extend below the bottom end of receptacle 12. According to such an embodiment, as illustrated in
(25) Container 10 can include a bottom end construction 100 at its lower end formed, at least in part, by outer sleeve 14. As best shown in
(26) The deep well formed by bottom end construction 100 in the present invention can be particularly beneficial for stacked containers 10 having greater sidewall heights. Such containers have a tendency to become stuck together if fully nested, and the creation of a deeper well bottom of such containers can prevent full nesting of the containers, such that they do not become frictionally stuck or vacuum locked together. In doing so, extension portion 102 results in the lower terminal edge 104 of an inner container 10a becoming rested or seated on the bottom wall 18 of an outer container 10b to prevent the sidewalls of the containers 10a and 10b from becoming stuck together, as is generally illustrated in
(27) Lower terminal edge 104 of outer sleeve 14 can be formed by the fold line resulting from reverse bend portion 34. In reverse bend portion 34, a lower portion of outer sleeve 14 can be folded inwardly back onto itself. Reverse bend portion 34 can be crimped such that it is entirely flattened directly against and attached to the inner surface 36 of outer sleeve 14, and there are no loops, cavities, voids, or air pockets formed by the reverse bend portion. Thereby, lower terminal edge 104 creates a lower boundary of outer sleeve 14. Alternatively, reverse bend portion 34 need not be crimped against the inner surface 26 of outer sleeve 14. In other embodiments, the lower end of outer sleeve 14 does not include a reverse bend portion, but rather terminates in a free, unfolded edge. For example, the lower end of outer sleeve 14 may be constructed in accordance with the disclosures of U.S. patent application Ser. No. 16/744,851, filed on Jan. 16, 2020, for a “Container and Bottom End Construction Therefor,” the entire disclosure of which is incorporated herein by reference.
(28) As mentioned above, the figures illustrate multiple embodiments of container 10. Each of the embodiments may be constructed and share many of the features above. The differences in each of the embodiments, and particularly the lower end constructions 100 therefore, will be explained and distinguished below.
(29)
(30) As shown, the angle of inclination or taper angle of a lower end 106 of inner receptacle 12 (i.e., the portion just below bottom wall 18) deviates from the angle of inclination or taper angle α of the remainder of sidewall 20.
(31) In one embodiment, the taper angle α of the of sidewall 20 may be between about 0° and 30°, in another embodiment it may be between about 1° and 7°, in another embodiment it may be between about 3° and 5°, and it yet a further embodiment it may be about 4.25°. The taper angle for outer sleeve 40 may correspond generally to that of sidewall 20.
(32) In one embodiment, as best illustrated in
(33) As demonstrated, for example, in
(34)
(35) As with the embodiment illustrated in
(36) As best demonstrated in
(37) Furthermore, as illustrated in
(38) In a method of forming the container 10, as discussed above, sidewall 20 and bottom wall 18 of inner receptacle 12 may be cut from a sheet of material. The blank which forms sidewall 20 may be wrapped around a mandrel and connected at its side edge portions to form a frustoconical sidewall 20. Depending skirt 26 may be formed into bottom wall 18 and then a lower portion of sidewall 20 may be attached, fixed or otherwise connected to depending skirt 26. In one embodiment, such attachment is achieved by forming a reverse bend portion 28, as described above. Either before, during, or after the step of attaching bottom wall 18 and/or depending skirt 26 thereof to sidewall 12, the lower end 106 of sidewall 20 can be bent, deformed, pressed, pulled, or otherwise manipulated such lower end 106 has a taper angle β that deviates from the taper angle α of the remainder of sidewall 20, as described above.
(39) One embodiment of the method also includes the step of cutting that blank that forms outer sleeve 14 from a sheet of material. A lower end of sleeve 14 may be folded, the fold which eventually forms reverse bend portion 34. Outer sleeve 14 may be applied to or wrapped around sidewall 20 of inner receptacle 12 and again can be affixed to sidewall 20 with an adhesive in one embodiment. Sleeve 14 may be applied around inner receptacle 12 such that a lower outer edge, corner or other portion of lower end 106 of inner receptacle 12 may contact or engage inner surface 36 of outer sleeve 14, while some or all of a remaining portion of outer sleeve 14 is not in direct contact with inner receptacle 12 or sidewall 20 thereof. Further, sleeve 14 may be applied around inner receptacle 12 such that lowermost edge 38 of inner receptacle 12 may engage, contact or sit on upper edge 108 of reverse bend portion 34 of outer sleeve 14.
(40) In an alternative embodiment of the method, sleeve 14 may be formed separately and subsequently applied to inner receptacle 12. In this instance, the blank which forms sleeve 14 may be wrapped around a mandrel and connected at its side edge portions to form sleeve 14. A lower end of sleeve 14 may be formed into a reverse bend portion 34. The formed sleeve 14 may then be slid around inner receptacle 12, or alternatively, inner receptacle 12 may be inserted or slid into formed outer sleeve 14. Again, outer sleeve 14 may be applied to inner receptacle 12 such that a lower outer edge, corner or other portion of lower end 106 of inner receptacle 12 may contact or engage inner surface 36 of outer sleeve 14, while some or all of a remaining portion of outer sleeve 14 is not in direct contact with inner receptacle 12 or sidewall 20 thereof. Further, outer sleeve 14 may be applied to inner receptacle 12 such that lowermost edge 38 of inner receptacle 12 may engage, contact or sit on upper edge 108 of reverse bend portion 34 of outer sleeve 14.
(41) The method of forming the “cup-within-a-cup” embodiment shown in in
(42) From the foregoing, it will be seen that this invention is one well adapted to attain all the ends and objects hereinabove set forth together with other advantages which are obvious and which are inherent to the structure. It will be understood that certain features and sub combinations are of utility and may be employed without reference to other features and sub combinations. Since many possible embodiments of the invention may be made without departing from the scope thereof, it is also to be understood that all matters herein set forth or shown in the accompanying drawings are to be interpreted as illustrative and not limiting.
(43) The constructions described above and illustrated in the drawings are presented by way of example only and are not intended to limit the concepts and principles of the present invention. Thus, there has been shown and described several embodiments of a novel invention. As is evident from the foregoing description, certain aspects of the present invention are not limited by the particular details of the examples illustrated herein, and it is therefore contemplated that other modifications and applications, or equivalents thereof, will occur to those skilled in the art. The terms “having” and “including” and similar terms as used in the foregoing specification are used in the sense of “optional” or “may include” and not as “required”. Many changes, modifications, variations and other uses and applications of the present construction will, however, become apparent to those skilled in the art after considering the specification and the accompanying drawings. All such changes, modifications, variations and other uses and applications which do not depart from the spirit and scope of the invention are deemed to be covered by the invention.