US20130001289A1 - Paperboard cup with moisture absorbing protection - Google Patents
Paperboard cup with moisture absorbing protection Download PDFInfo
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- US20130001289A1 US20130001289A1 US13/535,938 US201213535938A US2013001289A1 US 20130001289 A1 US20130001289 A1 US 20130001289A1 US 201213535938 A US201213535938 A US 201213535938A US 2013001289 A1 US2013001289 A1 US 2013001289A1
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- open
- layer
- insulative layer
- top cup
- cup
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- 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
- B65D81/3865—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 drinking cups or like containers
- B65D81/3874—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 drinking cups or like containers formed of different materials, e.g. laminated or foam filling between walls
Definitions
- EPS cups produced from expanded polystyrene (EPS) and cups produced from coated paperboard have long been used in the foodservice business for serving cold beverages.
- One favored attribute of EPS cups is the insulation properties which minimizes condensation formed on outside surface of the cup as a result of transpiration of atmospheric water vapor.
- Paper cups have higher thermal conductivity than EPS which results in faster rates of condensation than better insulated cups.
- Typical paper cups have an interior coating which provides a water barrier between the beverage and inner paper surface and an exterior plastic layer which provides moisture protection of the paper against condensation, and a graphics surface compatible with industrial printing.
- This invention provides an outer layer for graphics capability, an insulative layer between the graphics surface and the cup outer surface, an optional absorbent layer for trapping condensation between the graphics layer and the water barrier coating of the cup interior, a flexural rigidity for comfortable gripping, and optionally removes the condensation protection of the exterior of the typical cup.
- one aspect of the present invention is directed an open-top cup comprising a bottom wall and a side wall having inner and outer surfaces extending upwardly from the bottom wall and an outwardly curled lip formed on a free edge of the side wall.
- An insulative layer having a moisture absorbing characteristic is configured to be attached to the outer surface of the side wall coextensively.
- a graphic layer is configured to be attached to the insulative layer coextensively and wherein the open-top cup has at least 25% higher moisture absorbing capability as compared to an open-top cup without having the insulative layer.
- the insulative layer is an insulative-absorbtive layer contains fibers which absorb moisture or water.
- the insulative layer includes 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper.
- the insulative layer of air laid fibers is made of a layer of cellulose, propylene, or other fibers which is formed into a sheet having a mass density lower than typical paperboard, i.e. less than 11 pounds per 3000 square feet per mil of thickness.
- the low density of the air laid fibers results in a lower thermal conductivity than a typical paper of equivalent thickness.
- the graphics layer comprises a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic.
- Another aspect of the present invention is directed to an open-top cup comprising a bottom wall, a side wall having inner and outer surfaces extending upwardly from the bottom wall and an outwardly curled lip formed on a free edge of the side wall.
- An insulative layer has a moisture absorbing characteristic that is configured to be attached to the outer surface of the side wall coextensively.
- the insulative layer includes 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper.
- a graphic layer is configured to be attached to the insulative layer coextensively and wherein the open-top cup has at least 25% higher moisture absorbing capability as compared to an open-top cup without having the insulative layer and wherein the graphics layer comprising a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic.
- FIG. 1 is a perspective view of an open-top paperboard cup in accordance with the preferred embodiment of the present invention
- FIG. 2 is a fragment of sectional elevation view of FIG. 1 taken along section line 2 - 2 ;
- FIG. 3 is top perspective view of a first unitized cut and scored paperboard blank for forming the cup depicted in FIG. 1 in accordance to a first embodiment of the present invention
- FIG. 4A is an exploded sectional view of a second unitized cut and scored paperboard blanks representing a respective graphic layer and an insulative layer having a moisture absorbing layer;
- FIG. 4B is a sectional view of the graphic layer and an insulative layer taken along section line 4 B- 4 B;
- FIG. 4C is a top perspective view of the second unitized cut and scored paperboard blank formed from the graphic layer and an insulative layer attached to one another;
- FIG. 5 is a graph which shows comparison of three different cups with respect to total condensation mass gained at 90 F and 65% RH;
- FIG. 6 is a graph which shows comparison of three different cups with respect to drip mass at 90 F and 65% RH.
- EPS Extra Poly Styrene
- NTP National Toxicology Program
- styrene in the list Reasonably Anticipated to be a Human Carcinogen.
- sheet refers to webs, strips, films, pages, pieces, segments, etc., which may be continuous in form (e.g., webs) for subsequent subdividing into discrete units, or which may be in the form of discrete units (e.g., pieces).
- smooth surface refers to a surface such as paper, film, or foil which can be printed.
- Common printing methods include gravure, flexography, and lithography.
- minimal dripping of condensation refers to water droplets which condense on the exterior of the drinking cup and descend to the base of the cup under the influence of gravity.
- flexural rigidity refers to the resistance to deformation of the cup's wall particularly under the influence of gripping pressure from the hand of a user.
- a common means of measuring flexural rigidity is the Foodservice Packaging Institute cup resistance test method.
- high quality graphics refers to the artwork used in generating an image through industrial printing. Line screens in excess of 100 lines per inch used in halftone image reproduction are common measures of high quality graphics.
- industrial composting refers to compost conditions which reduce packages to decomposition products as described in ASTM D6400 and EN13432. Industrial composting is considered a preferred end of life scenario for package waste disposal and treatment.
- Recycling refers to the reuse of package materials by breaking them down into constituent components.
- a common recycling method for paper products involves submitting the products to water and agitation to break the fiber structure and releasing the fibers for reuse on a paper machine.
- source reduction refers to using a minimum amount of material to achieve package goals. Often this refers to using plastics of lighter gauge, paper of lower basis weight, and glue of lower application rate than might be initially proposed for package design.
- “humid environments” refer to the ambient moisture level of the air surrounding a paperboard cup. Moisture vapor in the air is condensed on the drinking cup primarily in response to the temperature change of the moisture in the surrounding air and outer surface of the cup cold beverage.
- saturation temperature refers to a temperature at which a fluid has exchanged all of the heat it can without changing state.
- insulative layer of air laid fibers refers to a layer of cellulose, propylene, or other fibers which is formed into a sheet having a mass density lower than typical paperboard, i.e. less than 11 pounds per 3000 square feet per mil of thickness.
- the low density of the air laid fibers results in a lower thermal conductivity than a typical paper of equivalent thickness.
- insulative-absorbtive layer refers to an insulative layer which contains fibers which also absorb moisture or water.
- thermoplastic refers to the conventional meaning of thermoplastic, i.e., a composition, compound, material, etc., that exhibits the property of a material, such as a high polymer, that softens when exposed to sufficient heat and generally returns to its original condition when cooled to room temperature.
- Thermoplastics may include, but are not limited to, polyesters (e.g., polyhydroxyalkanoates, polyethyleneterephthalate, etc.), poly(vinylchloride), poly(vinyl acetate), polycarbonates, polymethylmethacrylate, cellulose esters, poly(styrene), poly(ethylene), poly(propylene), cyclic olefin polymers, poly(ethylene oxide), nylons, polyurethanes, protein polymers, etc.
- polyesters e.g., polyhydroxyalkanoates, polyethyleneterephthalate, etc.
- poly(vinylchloride) poly(vinyl acetate)
- polycarbonates polymethylmethacrylate
- cellulose esters poly(styrene), poly(ethylene), poly(propylene), cyclic olefin polymers, poly(ethylene oxide), nylons, polyurethanes, protein polymers, etc.
- polylactic acid or polylactide refers to a renewable, biodegradable, thermoplastic, aliphatic polyester formed from a lactic acid or a source of lactic acid, for example, renewable resources such as corn starch, sugarcane, etc.
- PLA may refer to all stereoisomeric forms of PLA including L- or D-lactides, and racemic mixtures comprising L- and D-lactides.
- PLA may include D-polylactic acid, L-polylactic acid (also known as PLLA), D,L-polylactic acid, meso-polylactic acid, as well as any combination of D-polylactic acid, L-polylactic acid, D,L-polylactic acid and meso-polylactic acid.
- PLAs useful herein may have, for example, a number average molecular weight in the range of from about 15,000 and about 300,000.
- bacterial fermentation may be used to produce lactic acid, which may be oligomerized and then catalytically dimerized to provide the monomer for ring-opening polymerization.
- PLA may be prepared in a high molecular weight form through ring-opening polymerization of the monomer using, for example, a stannous octanoate catalyst, tin (II) chloride, etc.
- starch-based polymer refers to a polymer, or combination of polymers, which may be derived from, prepared from, etc., starch.
- Starch-based polymers which may be used in embodiments of the present invention may include, for example, polylactic acid (PLA), thermoplastic starch (for example, by mixing and heating native or modified starch in the presence of an appropriate high boiling plasticizer, such as glycerin and sorbitol, in a manner such that the starch has little or no crystallinity, a low T g , and very low water, e.g., less than about 5% by weight, for example, less than about 1% water), plant starch (e.g., cornstarch), etc., or combinations thereof.
- PLA polylactic acid
- thermoplastic starch for example, by mixing and heating native or modified starch in the presence of an appropriate high boiling plasticizer, such as glycerin and sorbitol, in a manner such that the starch has little or no crystallinity, a
- cellulose-based polymer refers to a polymer, or combination of polymers, which may be derived from, prepared from, etc., cellulose.
- Cellulose-based polymers which may be used in embodiments of the present invention may include, for example, cellulose esters, such as cellulose formate, cellulose acetate, cellulose diacetate, cellulose propionate, cellulose butyrate, cellulose valerate, mixed cellulose esters, etc., and mixtures thereof.
- a preferred embodiment of the invention comprises a unitized blank for making a beverage cup having a graphics layer and an insulative layer wrapped around the paperboard cup with a moisture absorbing surface.
- the combination of wrap (graphics layer and an insulative layer) and cup have a surface rigidity value measurable by the FPI rigidity test method when saturated.
- the graphics layer comprises a compostable film or mineral and an insulative layer of 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper.
- An alternative embodiment of the present invention comprises a unitized blank for wrapping a beverage cup comprising a graphics layer and an insulative and absorbant layer wrapped on a cup.
- the graphics layer comprising a compostable film or mineral and an insulative layer of 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, paper where the absorbent layer has a capacity to absorb condensation.
- the graphics layer comprising a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic and an insulative layer of 20 to 350 gsm comprising thermoplastic foam, paper, air laid fiber.
- FIG. 1 is a perspective view of an open-top paperboard cup 10 in accordance to the preferred embodiment of the present invention.
- the open-top cup is generally a paperboard cup 10 having a bottom wall 11 , a side wall 12 extending upwardly from the bottom wall 11 and an outwardly curled lip 14 formed on the free edge of the side wall 12 .
- the bottom wall 11 is formed preferably from flat, circular sheet of paperboard, which is folded downwardly along periphery and attached to the side wall 12 .
- the paperboard cup 10 could be a beverage cup which the open-top is defined by the rim of the cup.
- the paperboard cup 10 includes a frusto-conical shape defined by an enclosed bottom 11 and the open-top 13 .
- the outer surface of the side wall 12 of the cup 10 is covered with a respective insulative layer 16 and a graphic layer 18 .
- the insulative layer 16 is sandwiched between the outer surface 12 of the cup and the graphic layer 16 as depicted best in FIG. 2 .
- the insulative layer 16 contains moisture absorbing layer or a moisture absorbing characteristic.
- FIG. 3 is top perspective view of a first unitized paperboard blank 20 for forming the side wall 12 of paperboard cup 10 depicted in FIG. 1 in accordance to a first embodiment of the present invention.
- the unitized blank 20 is substantially flat symmetrical with respect to its lateral axis thereof.
- the unitized blank 20 is preferably an integral piece of a material such as continuous sheet of conventional paper, paperboard or corrugated paperboard.
- the unitized blank 20 is cut along its outer margins to form its frusto-conical shape.
- the unitized blank 20 is formed from three layers namely the side wall layer 12 , the insulative layer 16 and the graphic layer 18 which are adhesively or other means such as heat or sonic sealing techniques, attached to one another.
- the insulative layer 16 contains fibers which also absorb moisture or water and prevent the condensation of water vapor on the outer surface 12 of the cup 10 .
- the cup bottom wall 11 is positioned towards lower end of the side wall 12 , which is formed by wrapping the unitized blank 20 around a mandrel and sealing opposing ends to one another, as it is customary in cup-forming techniques.
- the side walls 12 with the cup bottom wall 11 are first attached to one another on the cup forming machine and in the second step the insulative layer 16 and the graphic layer 18 are adhesively or other means are attached to the side wall 12 .
- FIGS. 4A , 4 B, and 4 C are directed to steps of a preferred embodiment that first the insulative layer 16 and the graphic layer 18 are attached to one another to form a second unitized blank 24 , which then adhesively or by other means attached to the outer surface of the sidewall 12 .
- the insulative layer 16 of air laid fibers is a layer of cellulose, propylene, or other fibers which is formed into a sheet having a mass density lower than typical paperboard, i.e. less than 11 pounds per 3000 square feet per mil of thickness. The low density of the air laid fibers results in a lower thermal conductivity than a typical paper of equivalent thickness.
- the graphics layer 18 comprises a compostable film or mineral and an insulative layer of 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper.
- the graphics layer 18 has a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic and an insulative layer of 20 to 350 gsm comprising thermoplastic foam, thermoset foam, paper, and air laid fiber.
- FIG. 5 is a graph which shows comparison of three different cups with respect to total condensation mass gained at 90 F and 65% RH. It is self-evident that a 16 oz instant invention cup is superior as compared to the prior art 16 oz or prior art 20 oz.
- FIG. 6 is a graph which shows comparison of three different cups with respect to drip mass at 90 F and 65% RH. It is self-evident that a 16 oz instant invention cup is superior as compared to the prior art 16 oz or prior art 20 oz.
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Abstract
An open-top cup comprises a bottom wall and a side wall having inner and outer surfaces extending upwardly from the bottom wall. An outwardly curled lip formed on the free edge of the side wall. A respective insulative layer having a moisture absorbing characteristic and a respective graphic layer are attached to the outer surface of the side wall. The insulative layer is sandwiched between the outer surface of the side wall and the graphic layer.
Description
- This is a non-provisional application which claims priority from U.S. Provisional Patent Application Ser. No. 61/502,048 filed on Jun. 28, 2011.
- Cups produced from expanded polystyrene (EPS) and cups produced from coated paperboard have long been used in the foodservice business for serving cold beverages. One favored attribute of EPS cups is the insulation properties which minimizes condensation formed on outside surface of the cup as a result of transpiration of atmospheric water vapor. Paper cups have higher thermal conductivity than EPS which results in faster rates of condensation than better insulated cups.
- Recent changes in environmental and health concerns around styrene have created a demand for paper cups which show minimal dripping of condensation while containing cold beverages and maintain flexural rigidity as condensation forms and avoid the EPS issues regarding health and disposal. The paper cups provide a smooth surface for high quality graphics and provide an option for industrial composting where such is available. It also provides an opportunity for recycling, and employs a strategy of source reduction to use a minimum amount of material to achieve the objectives. Insulated paper cups, such as the International Paper Hold&Go®, Georgia Pacific Insulair®, and Horhauf wrapped cup, have partially addressed similar concerns for hot beverages. However, the aforementioned cups have limitations in their ability to hold cold beverages while minimizing moisture condensation on the outer surface of the cup and maintaining rigidity during the time it takes to consume a beverage.
- Typical paper cups have an interior coating which provides a water barrier between the beverage and inner paper surface and an exterior plastic layer which provides moisture protection of the paper against condensation, and a graphics surface compatible with industrial printing. This invention provides an outer layer for graphics capability, an insulative layer between the graphics surface and the cup outer surface, an optional absorbent layer for trapping condensation between the graphics layer and the water barrier coating of the cup interior, a flexural rigidity for comfortable gripping, and optionally removes the condensation protection of the exterior of the typical cup.
- Accordingly, one aspect of the present invention is directed an open-top cup comprising a bottom wall and a side wall having inner and outer surfaces extending upwardly from the bottom wall and an outwardly curled lip formed on a free edge of the side wall. An insulative layer having a moisture absorbing characteristic is configured to be attached to the outer surface of the side wall coextensively. A graphic layer is configured to be attached to the insulative layer coextensively and wherein the open-top cup has at least 25% higher moisture absorbing capability as compared to an open-top cup without having the insulative layer. The insulative layer is an insulative-absorbtive layer contains fibers which absorb moisture or water. The insulative layer includes 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper. The insulative layer of air laid fibers is made of a layer of cellulose, propylene, or other fibers which is formed into a sheet having a mass density lower than typical paperboard, i.e. less than 11 pounds per 3000 square feet per mil of thickness. The low density of the air laid fibers results in a lower thermal conductivity than a typical paper of equivalent thickness. The graphics layer comprises a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic.
- Another aspect of the present invention is directed to an open-top cup comprising a bottom wall, a side wall having inner and outer surfaces extending upwardly from the bottom wall and an outwardly curled lip formed on a free edge of the side wall. An insulative layer has a moisture absorbing characteristic that is configured to be attached to the outer surface of the side wall coextensively. The insulative layer includes 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper. A graphic layer is configured to be attached to the insulative layer coextensively and wherein the open-top cup has at least 25% higher moisture absorbing capability as compared to an open-top cup without having the insulative layer and wherein the graphics layer comprising a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic.
- A full understanding of the invention can be gained from the following description of the preferred embodiments when read in conjunction with the accompanying drawings in which:
-
FIG. 1 is a perspective view of an open-top paperboard cup in accordance with the preferred embodiment of the present invention; -
FIG. 2 is a fragment of sectional elevation view ofFIG. 1 taken along section line 2-2; -
FIG. 3 is top perspective view of a first unitized cut and scored paperboard blank for forming the cup depicted inFIG. 1 in accordance to a first embodiment of the present invention; -
FIG. 4A is an exploded sectional view of a second unitized cut and scored paperboard blanks representing a respective graphic layer and an insulative layer having a moisture absorbing layer; -
FIG. 4B is a sectional view of the graphic layer and an insulative layer taken alongsection line 4B-4B; -
FIG. 4C is a top perspective view of the second unitized cut and scored paperboard blank formed from the graphic layer and an insulative layer attached to one another; -
FIG. 5 is a graph which shows comparison of three different cups with respect to total condensation mass gained at 90 F and 65% RH; and -
FIG. 6 is a graph which shows comparison of three different cups with respect to drip mass at 90 F and 65% RH. - It is advantageous to define several terms before describing the invention. It should be appreciated that the following definitions are used throughout this application.
- Where the definition of terms departs from the commonly used meaning of the term, applicant intends to utilize the definitions provides below, unless specifically indicated.
- For the purposes of the present invention, “Expanded Poly Styrene (EPS) concern” refers to expanded styrene foam. The National Toxicology Program (NTP), a Division of Health and Human Services issued their 12th Registry on Carcinogens. This report now includes styrene in the list Reasonably Anticipated to be a Human Carcinogen.
- For the purposes of the present invention, the term “sheet” refers to webs, strips, films, pages, pieces, segments, etc., which may be continuous in form (e.g., webs) for subsequent subdividing into discrete units, or which may be in the form of discrete units (e.g., pieces).
- For the purposes of the present invention, “smooth surface” refers to a surface such as paper, film, or foil which can be printed. Common printing methods include gravure, flexography, and lithography.
- For the purposes of the present invention, “minimal dripping of condensation” refers to water droplets which condense on the exterior of the drinking cup and descend to the base of the cup under the influence of gravity.
- For the purposes of the present invention, “flexural rigidity” refers to the resistance to deformation of the cup's wall particularly under the influence of gripping pressure from the hand of a user. A common means of measuring flexural rigidity is the Foodservice Packaging Institute cup resistance test method.
- For the purposes of the present invention, “high quality graphics” refers to the artwork used in generating an image through industrial printing. Line screens in excess of 100 lines per inch used in halftone image reproduction are common measures of high quality graphics.
- For the purposes of the present invention, “industrial composting” refers to compost conditions which reduce packages to decomposition products as described in ASTM D6400 and EN13432. Industrial composting is considered a preferred end of life scenario for package waste disposal and treatment.
- For the purposes of the present invention, “Recycling” refers to the reuse of package materials by breaking them down into constituent components. A common recycling method for paper products involves submitting the products to water and agitation to break the fiber structure and releasing the fibers for reuse on a paper machine.
- For the purposes of the present invention, “source reduction” refers to using a minimum amount of material to achieve package goals. Often this refers to using plastics of lighter gauge, paper of lower basis weight, and glue of lower application rate than might be initially proposed for package design.
- For the purposes of the present invention, “humid environments” refer to the ambient moisture level of the air surrounding a paperboard cup. Moisture vapor in the air is condensed on the drinking cup primarily in response to the temperature change of the moisture in the surrounding air and outer surface of the cup cold beverage.
- For the purposes of the present invention, “saturation temperature” refers to a temperature at which a fluid has exchanged all of the heat it can without changing state.
- For the purposes of the present invention, “insulative layer” of air laid fibers refers to a layer of cellulose, propylene, or other fibers which is formed into a sheet having a mass density lower than typical paperboard, i.e. less than 11 pounds per 3000 square feet per mil of thickness. The low density of the air laid fibers results in a lower thermal conductivity than a typical paper of equivalent thickness.
- For the purposes of the present invention, “insulative-absorbtive” layer refers to an insulative layer which contains fibers which also absorb moisture or water.
- For the purposes of the present invention, the term “thermoplastic” refers to the conventional meaning of thermoplastic, i.e., a composition, compound, material, etc., that exhibits the property of a material, such as a high polymer, that softens when exposed to sufficient heat and generally returns to its original condition when cooled to room temperature. Thermoplastics may include, but are not limited to, polyesters (e.g., polyhydroxyalkanoates, polyethyleneterephthalate, etc.), poly(vinylchloride), poly(vinyl acetate), polycarbonates, polymethylmethacrylate, cellulose esters, poly(styrene), poly(ethylene), poly(propylene), cyclic olefin polymers, poly(ethylene oxide), nylons, polyurethanes, protein polymers, etc.
- For the purposes of the present invention, the term “polylactic acid or polylactide (PLA)” refers to a renewable, biodegradable, thermoplastic, aliphatic polyester formed from a lactic acid or a source of lactic acid, for example, renewable resources such as corn starch, sugarcane, etc. The term PLA may refer to all stereoisomeric forms of PLA including L- or D-lactides, and racemic mixtures comprising L- and D-lactides. For example, PLA may include D-polylactic acid, L-polylactic acid (also known as PLLA), D,L-polylactic acid, meso-polylactic acid, as well as any combination of D-polylactic acid, L-polylactic acid, D,L-polylactic acid and meso-polylactic acid. PLAs useful herein may have, for example, a number average molecular weight in the range of from about 15,000 and about 300,000. In preparing PLA, bacterial fermentation may be used to produce lactic acid, which may be oligomerized and then catalytically dimerized to provide the monomer for ring-opening polymerization. PLA may be prepared in a high molecular weight form through ring-opening polymerization of the monomer using, for example, a stannous octanoate catalyst, tin (II) chloride, etc.
- For the purposes of the present invention, the term “starch-based polymer” refers to a polymer, or combination of polymers, which may be derived from, prepared from, etc., starch. Starch-based polymers which may be used in embodiments of the present invention may include, for example, polylactic acid (PLA), thermoplastic starch (for example, by mixing and heating native or modified starch in the presence of an appropriate high boiling plasticizer, such as glycerin and sorbitol, in a manner such that the starch has little or no crystallinity, a low Tg, and very low water, e.g., less than about 5% by weight, for example, less than about 1% water), plant starch (e.g., cornstarch), etc., or combinations thereof.
- For the purposes of the present invention, the term “cellulose-based polymer” refers to a polymer, or combination of polymers, which may be derived from, prepared from, etc., cellulose. Cellulose-based polymers which may be used in embodiments of the present invention may include, for example, cellulose esters, such as cellulose formate, cellulose acetate, cellulose diacetate, cellulose propionate, cellulose butyrate, cellulose valerate, mixed cellulose esters, etc., and mixtures thereof.
- A preferred embodiment of the invention comprises a unitized blank for making a beverage cup having a graphics layer and an insulative layer wrapped around the paperboard cup with a moisture absorbing surface. The combination of wrap (graphics layer and an insulative layer) and cup have a surface rigidity value measurable by the FPI rigidity test method when saturated.
- The graphics layer comprises a compostable film or mineral and an insulative layer of 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper.
- An alternative embodiment of the present invention comprises a unitized blank for wrapping a beverage cup comprising a graphics layer and an insulative and absorbant layer wrapped on a cup.
- The graphics layer comprising a compostable film or mineral and an insulative layer of 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, paper where the absorbent layer has a capacity to absorb condensation.
- The graphics layer comprising a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic and an insulative layer of 20 to 350 gsm comprising thermoplastic foam, paper, air laid fiber.
-
FIG. 1 is a perspective view of an open-top paperboard cup 10 in accordance to the preferred embodiment of the present invention. For illustrative purposes, the open-top cup is generally apaperboard cup 10 having abottom wall 11, aside wall 12 extending upwardly from thebottom wall 11 and an outwardly curledlip 14 formed on the free edge of theside wall 12. Thebottom wall 11 is formed preferably from flat, circular sheet of paperboard, which is folded downwardly along periphery and attached to theside wall 12. Thepaperboard cup 10 could be a beverage cup which the open-top is defined by the rim of the cup. Thepaperboard cup 10 includes a frusto-conical shape defined by anenclosed bottom 11 and the open-top 13. The outer surface of theside wall 12 of thecup 10 is covered with arespective insulative layer 16 and agraphic layer 18. Theinsulative layer 16 is sandwiched between theouter surface 12 of the cup and thegraphic layer 16 as depicted best inFIG. 2 . Theinsulative layer 16 contains moisture absorbing layer or a moisture absorbing characteristic. -
FIG. 3 is top perspective view of a first unitized paperboard blank 20 for forming theside wall 12 ofpaperboard cup 10 depicted inFIG. 1 in accordance to a first embodiment of the present invention. The unitized blank 20 is substantially flat symmetrical with respect to its lateral axis thereof. The unitized blank 20 is preferably an integral piece of a material such as continuous sheet of conventional paper, paperboard or corrugated paperboard. The unitized blank 20 is cut along its outer margins to form its frusto-conical shape. The unitized blank 20 is formed from three layers namely theside wall layer 12, theinsulative layer 16 and thegraphic layer 18 which are adhesively or other means such as heat or sonic sealing techniques, attached to one another. Theinsulative layer 16 contains fibers which also absorb moisture or water and prevent the condensation of water vapor on theouter surface 12 of thecup 10. After forming the unitized blank 20, thecup bottom wall 11 is positioned towards lower end of theside wall 12, which is formed by wrapping the unitized blank 20 around a mandrel and sealing opposing ends to one another, as it is customary in cup-forming techniques. In the preferred embodiment of the invention, to construct thepaperboard cup 10, theside walls 12 with thecup bottom wall 11 are first attached to one another on the cup forming machine and in the second step theinsulative layer 16 and thegraphic layer 18 are adhesively or other means are attached to theside wall 12. -
FIGS. 4A , 4B, and 4C are directed to steps of a preferred embodiment that first theinsulative layer 16 and thegraphic layer 18 are attached to one another to form a second unitized blank 24, which then adhesively or by other means attached to the outer surface of thesidewall 12. Theinsulative layer 16 of air laid fibers is a layer of cellulose, propylene, or other fibers which is formed into a sheet having a mass density lower than typical paperboard, i.e. less than 11 pounds per 3000 square feet per mil of thickness. The low density of the air laid fibers results in a lower thermal conductivity than a typical paper of equivalent thickness. Thegraphics layer 18 comprises a compostable film or mineral and an insulative layer of 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper. Thegraphics layer 18 has a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic and an insulative layer of 20 to 350 gsm comprising thermoplastic foam, thermoset foam, paper, and air laid fiber. The unitized blank 24 of preferred embodiment in which thegraphic layer 18 is substantially planar and the inner and outer surfaces of the unitized blank 24 have more than one level as a result of skiving, embossing, foaming, pattern printing or other contouring operation. -
FIG. 5 is a graph which shows comparison of three different cups with respect to total condensation mass gained at 90 F and 65% RH. It is self-evident that a 16 oz instant invention cup is superior as compared to theprior art 16 oz orprior art 20 oz. -
FIG. 6 is a graph which shows comparison of three different cups with respect to drip mass at 90 F and 65% RH. It is self-evident that a 16 oz instant invention cup is superior as compared to theprior art 16 oz orprior art 20 oz. - While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. An open-top cup comprising:
a bottom wall,
a side wall having inner and outer surfaces extending upwardly from the bottom wall and an outwardly curled lip formed on a free edge of the side wall,
an insulative layer having a moisture absorbing characteristic configured to be attached to the outer surface of the side wall coextensively,
a graphic layer configured to be attached to the insulative layer coextensively and wherein the open-top cup has at least 25% higher moisture absorbing capability as compared to an open-top cup without having the insulative layer.
2. The open-top cup of claim 1 wherein the insulative layer is an insulative-absorbtive layer contains fibers which absorb moisture or water.
3. The open-top cup of claim 1 wherein the insulative layer includes 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper.
4. The open-top cup of claim 1 wherein the insulative layer of air laid fibers is made of a layer of cellulose, propylene, or other fibers which is formed into a sheet having a mass density lower than typical paperboard.
5. The open-top cup of claim 4 wherein the lower mass density is less than 11 pounds per 3000 square feet per mil of thickness.
6. The open-top cup of claim 4 wherein low density of the air laid fibers results in a lower thermal conductivity than a typical paper of equivalent thickness.
7. The open-top cup of claim 1 wherein the graphics layer comprising a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic.
8. An open-top cup comprising:
a bottom wall,
a side wall having inner and outer surfaces extending upwardly from the bottom wall and an outwardly curled lip formed on a free edge of the side wall,
an insulative layer having a moisture absorbing characteristic configured to be attached to the outer surface of the side wall coextensively wherein the insulative layer includes 20 to 350 gsm of fibers from the group of cellulose, PLA, bicore PLA-cellulose, starch, and paper,
a graphic layer configured to be attached to the insulative layer coextensively and wherein the open-top cup has at least 25% higher moisture absorbing capability as compared to an open-top cup without having the insulative layer and wherein the graphics layer comprising a printable surface of paper, clay, LDPE, PP, PET or other noncompostable thermoplastic.
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US13/535,938 US20130001289A1 (en) | 2011-06-28 | 2012-06-28 | Paperboard cup with moisture absorbing protection |
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US201161502048P | 2011-06-28 | 2011-06-28 | |
US13/535,938 US20130001289A1 (en) | 2011-06-28 | 2012-06-28 | Paperboard cup with moisture absorbing protection |
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US201161502048P Continuation | 2011-06-28 | 2011-06-28 |
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US13/535,938 Abandoned US20130001289A1 (en) | 2011-06-28 | 2012-06-28 | Paperboard cup with moisture absorbing protection |
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Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100187296A1 (en) * | 2006-09-29 | 2010-07-29 | International Paper Company | Double wall container with internal spacer |
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US11674014B2 (en) | 2015-06-30 | 2023-06-13 | BiologiQ, Inc. | Blending of small particle starch powder with synthetic polymers for increased strength and other properties |
US11673734B2 (en) * | 2017-08-02 | 2023-06-13 | Bockatech Ltd. | Hollow plastic article |
US11674018B2 (en) | 2015-06-30 | 2023-06-13 | BiologiQ, Inc. | Polymer and carbohydrate-based polymeric material blends with particular particle size characteristics |
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US11926940B2 (en) | 2015-06-30 | 2024-03-12 | BiologiQ, Inc. | Spunbond nonwoven materials and fibers including starch-based polymeric materials |
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US11945641B2 (en) | 2018-04-13 | 2024-04-02 | Graphic Packaging International, Llc | Container with insulating features |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4071651A (en) * | 1974-10-10 | 1978-01-31 | Karl Kroyer St. Anne's Limited | Treatment of fibrous material |
US5902669A (en) * | 1995-04-24 | 1999-05-11 | The Procter & Gamble Company | Disposable paper products with indicator means |
US6253995B1 (en) * | 2000-05-16 | 2001-07-03 | Burrows Paper Corporation | Insulated containers and sidewalls having laterally extending flutes, and methods |
US20020000446A1 (en) * | 2000-06-29 | 2002-01-03 | Paul Taylor | Cup-holder napkin |
US20020179617A1 (en) * | 2001-05-31 | 2002-12-05 | Landra Barthlow | Wrap-around for a beverage container |
US20060030632A1 (en) * | 2003-12-05 | 2006-02-09 | Krueger Jeffrey J | Low-density, open-cell, soft, flexible, thermoplastic, absorbent foam and method of making foam |
US20080156857A1 (en) * | 2006-12-28 | 2008-07-03 | Weyerhaeuser Co. | Method For Forming A Rim And Edge Seal For An Insulating Cup |
US20100029453A1 (en) * | 2006-07-27 | 2010-02-04 | Robertson Ronald D | Multi-layer heat insulating container |
-
2012
- 2012-06-28 US US13/535,938 patent/US20130001289A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4071651A (en) * | 1974-10-10 | 1978-01-31 | Karl Kroyer St. Anne's Limited | Treatment of fibrous material |
US5902669A (en) * | 1995-04-24 | 1999-05-11 | The Procter & Gamble Company | Disposable paper products with indicator means |
US6253995B1 (en) * | 2000-05-16 | 2001-07-03 | Burrows Paper Corporation | Insulated containers and sidewalls having laterally extending flutes, and methods |
US20020000446A1 (en) * | 2000-06-29 | 2002-01-03 | Paul Taylor | Cup-holder napkin |
US20020179617A1 (en) * | 2001-05-31 | 2002-12-05 | Landra Barthlow | Wrap-around for a beverage container |
US20060030632A1 (en) * | 2003-12-05 | 2006-02-09 | Krueger Jeffrey J | Low-density, open-cell, soft, flexible, thermoplastic, absorbent foam and method of making foam |
US20100029453A1 (en) * | 2006-07-27 | 2010-02-04 | Robertson Ronald D | Multi-layer heat insulating container |
US20080156857A1 (en) * | 2006-12-28 | 2008-07-03 | Weyerhaeuser Co. | Method For Forming A Rim And Edge Seal For An Insulating Cup |
Cited By (37)
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US11926940B2 (en) | 2015-06-30 | 2024-03-12 | BiologiQ, Inc. | Spunbond nonwoven materials and fibers including starch-based polymeric materials |
US11674018B2 (en) | 2015-06-30 | 2023-06-13 | BiologiQ, Inc. | Polymer and carbohydrate-based polymeric material blends with particular particle size characteristics |
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US11673734B2 (en) * | 2017-08-02 | 2023-06-13 | Bockatech Ltd. | Hollow plastic article |
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Owner name: INTERNATIONAL PAPER COMPANY, TENNESSEE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TEDFORD, RICHARD A.;REEL/FRAME:029061/0177 Effective date: 20121001 |
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