Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
  • B65D81/3876—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation insulating sleeves or jackets for cans, bottles, barrels, etc.

Definitions

• the invention is broadly directed to beverage container insulators that are intended to provide a means for conveniently isolating or mitigating the thermal condition of a fluid container from a user holding the container, as well as related methods for making the same.
• the various embodiments of the invention provide a variety of means and benefits combinations for insulating a user's hand from the beverage container.
• a variety of insulators are constructed from molded pulp.
• molded pulp comprises any rigid or semi-rigid structure formed from slurries of a polysaccharide or similar polymer into the final structure, and functional equivalents thereof, and may include adjuncts thereto.
• a second series of embodiments is directed to multiple layer insulators.
• Certain embodiments rely upon selectively displacing the insulator from the container to achieve container insulation while others rely primarily upon material selection and thickness to provide the insulating characteristics.
• Methods for producing the insulators include cellulose pulp vacuum forming and sheet stock stamping, which will be described in greater detail below.
• the insulator comprises a molded hollow cylinder.
• the cylinder includes an inside surface, an outside surface, a first end having a first opening, a second end having a second opening, and a body portion between the two ends.
• Each opening is defined by a perimeter that joins the inside surface to the outside surface, and the first opening preferably has a diameter greater than that of the second opening, thereby defining a generally frusto conical shape for use with containers that are not generally characterized as right cylinders.
• select versions in the first series of embodiments will have the first opening diameter greater than the second opening diameter.
• the draft angle of the insulator is approximately equal to that of conventional hot beverage containers frequently used for serving coffee or tea, or to that of a specific conventional hot beverage container.
• material selection provides the primary means for insulation.
• a preferred material for constructing these select versions is cellulose or wood pulp. The resulting insulator therefore has a greater sectional thickness when compared to, for example, calendared paper cups, and also has a lower density that further aids in establishing an insulative layer between the beverage container and a user's hand.
• pulp-based products conventionally have a smooth side (the side exposed to the screen, and a rough side characterized as having a plurality of protrusions and recesses).
• a smooth side the side exposed to the screen
• a rough side characterized as having a plurality of protrusions and recesses.
• a feature of these select versions is the incorporation of an enhanced lip portion at the first opening perimeter.
• the lip portion is characterized as band of increased diameter material with a lower annular segment extending radially inwardly (either orthogonally or preferably obliquely) to the body.
• This feature beneficially increases the radial crush resistance of the insulator and provides a convenient means for intercepting "dribbles" that might otherwise reach the user's hand or drip from the bottom of the container.
• first subset of the first series of embodiments may be simple, they represent a significant savings in per unit manufacturing costs when compared to sleeves and insulators of the prior art.
• these select versions increase the coefficient of friction between the insulator and the container.
• conventional sleeves such as those constructed from corrugated stock use a smooth and somewhat calendared inner surface
• molded embodiments preferably use cellulose pulp.
• This production method and material selection exploits the course surface of the finished product to increase the coefficient of friction between it and the container.
• this composition permits the use of 100% recycled cellulose pulp with no degradation in performance.
• An ancillary benefit is a significant reduction in final product cost as well as the previously mentioned reduction in heat transfer rates.
• frusto-conical embodiments may be nested for storage, transportation (collapsed embodiments regardless of ultimate geometric form also have desirable storage and shipment form factors) and dispensing, thereby reducing post manufacturing costs.
• expansion means for permitting a limited number of insulators to adapt to nearly all conventional, single-serving beverage containers.
• These expansion means conjunctively or disjunctively comprise the creation of a plurality of slits extending from one of an area proximate to one end or the body portion to one of the other end or an area adjacent but prior to the other end perimeter, or the creation of a plurality of radially displaceable stand-off elements.
• the slits and/or stand-off elements may be congruent with the axis of the insulator or may be skew thereto in orientation, and may be rectilinear or curvilinear in shape.
• a feature of these embodiments provides for terminating a slit just prior to the second perimeter (thereby creating a frangible slit).
• this insulator configuration beneficially conforms to those containers wherein the draft angle is less than that of the insulator, or where the container diameter is greater than that of the second end:
• the bottom portion of a container will progressively apply a radially outward force to the inside wall of the insulator until the expansive force causes the second end perimeter to breach.
• the incorporation of a frangible slit enhances the handling of the insulators since the second end perimeter is not susceptible to unintentional displacement that may occur during nesting or other handling actions.
• Still other embodiments of the first series of embodiments permit a user to frictionally retain a container therein without contact between the first opening perimeter and the container. This is accomplished by providing a sleeve with a draft angle greater than that of the container for which the sleeve is used. In such embodiments, the second opening perimeter and a portion of the body adjacent to the second opening perimeter contact the container while the first opening perimeter and a portion of the body adjacent to the first opening perimeter do not. In such an arrangement, thermal conduction by the insulator at the non-contacting portions is eliminated.
• the stand-off elements comprise pleats extending from one end of the insulator towards the other, and preferably well into the body portion.
• the pleats preferably taper from the small diameter opening (putatively the second opening) to the opposite opening. The described pleats can be formed during formation of the insulator or induced post formation through the use of heat and pressure during a "crimping" process, which will be described in greater detail below.
• the stand-off elements are pleats, equally applicable are radially inwardly projecting protrusions (of any geometric form) formed on the inner surface of the body portion used in conjunction with either pleats or functionally equivalent structures, or with slits/slots. If used with the latter, an additional benefit is realized: the dead air gap between the beverage container and the insulator further increases the resistance to heat transfer from the container to the user's hand.
• the referenced pleats can have a generally planar faces, thereby forming angle intersections, or can have generally smooth faces, thereby forming a trough-like cross sectional profile.
• smooth faces provide for a more uniform radial expansion and reduce the propensity of pulp build-up at planar intersections, which further reduces uniform material displacement upon presentation of radially outward forces.
• the deflection properties of these areas can be advantageously modified for desired insulator operability.
• the slit features and the stand-off features may be combined into one embodiment.
• the slits serve to localize radial expansion forces, thereby preserving desirable geometric attributes of the stand-off elements.
• scoring or "coining" of selected portions of the stand-off elements can achieve similar force localization effects without having to use slits.
• a molded insulator is provided that is manipulated after manufacture to create an insulating sleeve.
• the derivative insulators are projections (two dimensional or semi-two dimensional mappings of the entire surface of the three dimensional insulator) of the corresponding insulator.
• these derivatives will be referred as clam-shell embodiments.
• the insulator comprises a first edge, a second edge spaced apart from the first edge, wherein both edges are preferably arcuate and equidistant from each other.
• Two spaced apart lateral edges each join the first and second edges such that the four edges define a body portion.
• a plurality of bending zones or hinge segments may be imparted into the insulator during manufacture or subsequent manipulation.
• contoured relief portions generally arcuate sections of the ultimately formed cylinder comprising the insulator
• the body portion already has a plurality of hinged contoured relief portions that permit a close fit therewith.
• a benefit to constructing an insulator according to this derivative of the first series of embodiments relates to speed of manufacture, particularly when the insulator is constructed from cellulose pulp. As those persons skilled in the art will appreciate, the deeper a form is, the slower the manufacturing process will be. Because insulators, according to the this series of embodiments, have a minimal depth (the depth of the mold is directly related to the "height" of the contour relief portions and generally will not exceed 38 mm or 1.5 inches as compared to the previously described first series of embodiments wherein the depth may be as great as 80 mm or 3.5 inches), manufacturing output is greatly increased. While the "cost" for such efficiency is that the user or beverage provider must then manipulate the insulator to fit the container, upfront this post manufacturing step is not undertaken by the manufacturer. Moreover, the generally compact nature of such insulators greatly increases the packaging ability thereof.
• first series derivative embodiments are not manufactured in a "ready-to-use" state, means must be provided for securing the first lateral edge or body portion proximate thereto to the second lateral edge or body portion proximate thereto.
• Two preferred means are mechanical fastening and chemical bonding, e.g., adhesive.
• At least one tab and slot configuration can be used where a tab is formed at the first edge (alternatively, the tab can be established in the body portion proximate to the first edge by cutting the outline of a tab therein and subsequently dislodging the tab therefrom, as will be described in more detail below) and a slot is formed in the body portion proximate to the second edge by cutting a slot therein.
• at least one slit can be created at each lateral edge, such that the opposing slits engage one another during assembly of the insulator. Examples in the prior art of achieving such connectivity, which are incorporated herein by reference, include those found in United States patent numbers 5,857,615; 5,842,633; 5,425,497 and in United States application publication number US 2003/0111475.
• an adhesive can be applied to one or both body portions proximate to one or both lateral edges such that, when the edges are overlapped, one body portion will contact the formerly opposing body portion.
• the general form of the beverage container is ascertained and an insulator mold is created based upon this form (leaving, of course, at least the corresponding beverage container opening unobstructed so that a user may freely remove liquid from the container when surrounded by the insulator).
• the mold is carried out in a clamshell fashion so that for each insulator there are two halves, preferably hingedly linked to one another.
• the form of the beverage container upon which the mold is based is divided along the sagittal or coronal plane (as opposed to the horizontal/transverse plane).
• a second series embodiment is broadly characterized as an insulating ring constructed from a flexible material such as paste board, plastic(s), inflatable poly bladders or foam(s), and preferably from molded paper pulp or partially pleated paper.
• the insulating ring comprises a cylindrical skirt having a first end and a second end, and a flange located at one end wherein the flange defines a variable diameter, expandable orifice.
• the flange is characterized as comprising a circumferential portion having an outer circumference generally equal to that of the skirt and preferably an upper end of the skirt.
• the circumferential portion may be annular or coextensive with the outer circumference.
• Extending radially inward from the circumferential portion is a plurality of arms. Each arm is flexibly linked to the circumferential portion and separate from adjacent arms by one of a slit, a slot or a span. Thus, each arm can flex in relationship to the flange independently of one another.
• the end of the skirt nearest the flange is considered the upper portion of the skirt.
• a user desiring to enjoy an insulated grip of the beverage container inserts the bottom portion of the beverage container through the expandable orifice at the upper portion of the skirt.
• the arms radially displace and diameter of the expandable orifice adapts to receive the bottom portion of the beverage container.
• the arms continue to move in response to the container insertion until the interaction between the outer surface of the container and the arms sufficiently resists further container translation so that a user ceases further insertion.
• the flexible linkage between the arms and the circumferential portion has a desirable level of deflection resistance such as the further the container translates in the skirt, the greater the friction between the container outer surface and the arms.
• the degree of deflection resistance can be varied by modulating the arc length of each arm (the arc length need not, but can, be the same for all arms); modulating the radial depth of the slit, slot or span between arms; or the geometry of the slit, slot or span between arms, e.g., pure radial, swept radial, etc. changes to frictionally receive the peripheral surface of the container. Additional methods for construction and compositions can be employed.
• the radial length of one or more arms can be varied; the diameter and geometry of the orifice can be varied; surface treatments can be integrated on the surface or body of one or more arms to increase the coefficient of friction thereof; and as illustrated the pitch of the arms can be varied to create a "stand off' when arms are engaged and depressed into the center of the cylinder (sleeve).
• the skirt can comprise at least one stand-off element at the end opposite the flange.
• a stand-off element is a structure that effectively decreases the diameter of the skirt at the end opposite the flange and creates, when a beverage container is inserted into the skirt, a set off distance between the container outer surface and the inner surface of the skirt.
• the stand-off element can be a continuous annular element, a segmented annular element, a plurality of regularly or irregularly spaced point or linear protrusions, and the like.
• the skirt can comprise at least one stand-off element at any location on the inner surface of the skirt.
• the skirt can be of a right cylinder design or a frusto- conical design. If the later, the skirt is particularly suited for use with beverage containers having a complementary geometry, which includes having draft angles of approximately 4° to 6°.
• a benefit of the second series embodiment is its slip resistance relative to the beverage container. Because the distal edges of the arms act against the outer surface of the beverage container much like barbs, and because of the considerable surface area of contact between the arms and the container, unintentional slipping of the ring relative to the container is minimized. Arm lateral edge contact can be used to increase slip resistance by employing swept radial arms that permit the side edges of the arms to contact the beverage container when the arms are flexed during container insertion.
• FIG. 1 is a perspective view of a first series of embodiments illustrating a simple molded insulator for surrounding a disposable beverage container having a draft angle;
• FIG. 2 is an elevation view of the embodiment of Fig. 1 ;
• FIG. 3 is a perspective view of a truncated version of the embodiment of Fig. 1 wherein the unitary insulator has been collapsed to facilitate efficient packing for shipping;
• FIG. 4 is a perspective view of the embodiment of Fig. 3 wherein the insulator has been partially expanded to receive a container;
• Fig. 5 is perspective view of a slit embodiment of the first series of embodiments wherein a plurality of slits/slots extend from a perimeter of the insulator to a body portion thereof, and further illustrating the incorporation of an expanded lip;
• FIG. 6 is a perspective view of the embodiment of Fig. 5, shown surrounding a beverage container after radial expansion of the perimeter;
• Fig. 7 is a derivative embodiment of that shown in Fig. 5, but wherein a frangible slit is formed at the perimeter;
• FIG. 8 is a perspective view of a pleated embodiment of the first series of embodiments
• Fig. 9 is a cross sectional elevation view of the embodiment shown in Fig. 8 detailing the dimensions and geometry of the pleated embodiment
• Fig. 10 is a plan view of the embodiment of Fig. 8, particularly illustrating the reduced diameter opening at the lower perimeter due to the radially inward extension of the pleats;
• FIG. 11 is an end view of a clam-shell embodiment of the first series of embodiments particularly illustrating the nature and location of hinge portions and contour relief portions to facilitate formation of a frusto-conical cylinder;
• Fig. 12 is a plan view of the claim-shell embodiment of Fig. 12;
• FIG. 13 is a perspective view of an alternative clam-shell embodiment having two semi-cylindrical sections linked by a hinge element and using an interleaving means for securing one end thereof to the other
• Fig. 14 is a perspective view of the embodiment of Fig. 14 prior to encircling a beverage container;
• FIG. 15 is a perspective view of the embodiment of Fig. 15 after encirclement of the container and interleaving of its closure elements;
• Fig. 16 is a plan view, in perspective, of an additional alternative clam-shell embodiment shown in a substantially open position; and [45] Fig. 17 is an elevation view, in perspective, of the embodiment of Fig. 17 shown in a substantially closed position.
• the insulator of the invention includes cylinder 50, which has an upper end 52 and a lower end 62 separated by body portion 72.
• Upper end 52 includes upper perimeter 54, which defines opening 56, and may optionally include lip 58.
• Lower end 62 includes perimeter 64, which defines opening 66.
• Body portion 72 includes inside surface 74 and outside surface 76.
• the draft of cylinder 50 is shown at 78.
• the embodiment shown in these Figs. 1 and 2 is preferably formed from a wood pulp slurry through vacuum forming, as is well known in the art as applied to other applications.
• Figures 3 and 4 illustrate the embodiment of Figs. 1 and 2 in a collapsed mode to increase packing density. With the exception of not including lip 58 and decreasing the length of body portion 72, this embodiment is the same as that of Figs. 1 and 2.
• Figure 5 shows a slit embodiment of cylinder 50 wherein a plurality of slits 80 are formed in body portion 72 and extend there from to lower perimeter 64.
• lower perimeter 64 is free to radially expand outward upon being biased, such as when inserted over a disposable beverage container such as shown in Fig. 6.
• the draft angle of the cylinder may be greater than that of the beverage container, however, the draft angle of cylinder 50 is variable in this regard and lower perimeter 64 will radially expand to accommodate containers having a draft angle less than that of cylinder 50.
• slit 80 transform into a pronounced "V" shape as best shown in Fig. 6.
• FIG. 7 An alternative arrangement to that shown in Figs. 5 and 6 is shown in Fig. 7 wherein lower perimeter 64 is retained.
• frangible portion 82 is formed and will breach upon application of a sufficient radially outward bias at lower perimeter 64.
• radial expansion is characterized as material separation.
• cylinder 50 in Figs. 8-10 a pleated embodiment is shown.
• portions of body portion 72 and lower perimeter 64 are displaceable.
• Pleats 90 are shown as being smooth-walled, although alternative embodiments now shown herein employ planar faces.
• slits or scorings are provided at pleats 90 to facilitate force localization, thereby insuring that radial expansion does not otherwise affect the generally circular cross section geometry of cylinder 50.
• maximum draft angle 78' and nominal draft angle 78 are also shown in Fig. 9.
• the illustrated embodiment can accommodate disposable containers having draft angles at least within this range, which is believed to accommodate nearly all commercially available disposable beverage container.
• Figure 10 particularly shows both nominal opening diameter 66 and reduced diameter 68. As long as the target beverage container has a minimum diameter of at least that of reduced diameter 68, it can be accommodated by the illustrated embodiment.
• FIG. 3 and 4 The embodiment of Figs. 3 and 4 is shown in a "clam-shell" configuration in Figs. 11 and 12.
• This embodiment includes hinge elements 100, which serve to link the quarter cylinders comprising cylinder 50 when ends 102 are joined.
• Each quarter cylinder is considered a "contour relief in an otherwise two dimensional projection of cylinder 50 of Figs. 3 and 4.
• Figures 13-15 illustrate an alternative embodiment to that of Figs. 11 and 12 wherein interlocking elements 104 are employed to secure ends 102 to each other, thereby forming cylinder 50 upon encirclement of a disposable beverage container.
• Figures 16 and 17 illustrate an alternative clam-shell embodiment.
• cylinder 50 is characterized as clamshell sleeve 120.
• Sleeve 120 includes first shell 130 and second shell 140.
• First shell 130 includes major rim portion 132 and minor rim portion 134 as well as body portion 136 and edges 138; second shell 140 includes major rim portion 142 and minor rim portion 144 as well as body portion 146 and edges 148.
• First shell 130 and second shell 140 are pivotally linked to each other by a pair of hinge elements 150.
• Each hinge element includes a first portion 152 and a second portion 154.
• First portion 152 of each hinge element 150 is connected to or integrally extends from edges 138 proximate to minor rim portion 134 while second portion 154 of each hinge element 150 is connected to or integrally extends from edges 148 proximate to minor rim portion 138.
• the precise location of hinge elements 150 may be varied and still retain much of the functionality of the second embodiment: the hinge elements may link adjacent minor rim portions 138 and 148; the hinge elements may be located at minor rim portions 138 and 148.
• tail segments 160 A benefit to establishing an axis of pivot proximate to but not at minor rim portions 138 and 148 is the creation of tail segments 160 as is best shown in Fig. 7.
• tail segments 160 When tail segments 160 are present, a fulcrum arrangement is created.
• the lower portion of such container contacts tail segments 160, which cause the remaining portions of sleeve 120 beyond the axis of pivot as defined by hinge elements 150 to adduct.
• This bias assists in preventing the unintentional abduction of sleeve 120 about the beverage container.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Packages (AREA)
• Details Of Rigid Or Semi-Rigid Containers (AREA)

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• 2005
  • 2005-06-16 EP EP05761547A patent/EP1773687A1/en not_active Withdrawn
  • 2005-06-16 JP JP2007516765A patent/JP2008503401A/ja not_active Withdrawn
  • 2005-06-16 WO PCT/US2005/021410 patent/WO2006007416A1/en active Application Filing
• 2006
  • 2006-12-18 US US11/641,621 patent/US20070164041A1/en not_active Abandoned

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