KENAF PAPER CARDBOARD CARTONS AND CORRUGATED BOXES
The use of kenaf paper for use to manufacture cardboard cartons or corrugated boxes, wherein said carton or box is comprised of 1 to 100% kenaf.
This application is a continuation-in-part of U.S. application Ser. No. 19/363,199 filed Oct. 20, 2025 which claims benefit to and priority of U.S. Provisional Patent Application Ser. No. 63/711,080 filed Oct. 23, 2024.
FIELD OF THE INVENTIONThe use of kenaf paper to manufacture cardboard cartons or corrugated boxes.
BACKGROUND OF THE INVENTIONKenaf is a plant that is known for its fiber uses. It is predominately used to create ropes, kenaf stalks and can also be used to make twine, cloth and paper. Kenaf plants can reach over six feet in height.
Kenaf is an annual plant. The stalks of the kenaf plant can typically be harvested for fiber in approximately 120 days after the kenaf crop is planted, assuming ideal soil and climate conditions. Kenaf is intolerable to cold weather.
Kenaf can produce between five and ten tons of fiber per acre in four to five months'time. Hemp's fiber production is generally less than half of kenaf's. External bast fibers typically comprise about 30-40% of the plant, while internal hurd core fibers comprise the remaining 60-70% of the plant. Hemp stalks typically consist of 25% bast (long fiber) and 75% hurd core fiber. Kenaf is cultivated for the soft bast fiber in the stem. The kenaf bast fiber is similar to a softwood or pine fiber. Softwood is a high quality fiber typically used in commercial paper production. Kenaf has high fiber and biomass yielding values.
Pulping kenaf requires less energy and chemical inputs for processing than pulping from other weed sources.
Kenaf can be successfully ground in a mode range of soil types, from high organic peat soils to sandy desert soils. Kenaf shows excellent tolerance to drought conditions.
Kenaf is a similar fiber to jute. Kenaf's scientific name is Hibiscus cannabinus.
SUMMARY OF THE INVENTIONThe present invention relates to a cardboard carton or corrugated box that is comprised of kenaf paper. The definition of a cardboard carton includes a cardboard box. The definition of kenaf paper includes machine made kenaf paper. The present invention relates to a cardboard carton or corrugated box that is comprised of kenaf paper made from one hundred percent kenaf. The present invention relates to a cardboard carton or corrugated box that is comprised of kenaf paper made from one to twenty five percent kenaf. The present invention relates to a cardboard carton or corrugated box that is comprised of kenaf paper made from twenty five to fifty percent kenaf. The present invention relates to a cardboard carton or corrugated box that is comprised of kenaf paper made from fifty to seventy-five percent kenaf. The present invention relates to a cardboard carton or corrugated box that is comprised of kenaf paper made from seventy-five to one hundred percent kenaf. It is an object of the present invention for the percentage of the paper that is not kenaf paper to be made of post-consumer waste recycled content wood pulp. It is an object of the present invention for the percentage of paper that is not kenaf paper to be made of post-industrial recycled content wood pulp. It is an object of the present invention for the percentage of paper that is not kenaf paper to be made of virgin wood pulp. It is an object of the present invention for the percentage of paper that is not kenaf paper to be made from any combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp. It is an object of the present invention for the percentage of kenaf paper to be twenty to forty percent and for the combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp to be sixty to eighty percent. This is a preferred embodiment because of the costs of the of the different elements and the desire for biodegradability and compostability.
It is an object of the present invention for the kenaf paper to have a hurd content of less than 15%. It is an object of the present invention for the kenaf paper to have a hurd content of less than 10%. It is an object of the present invention for the kenaf paper to have a hurd content of less than 5%. It is an object of the present invention for the kenaf paper that is not made from the hurd of the kenaf stalk to be made from the bast fiber of the kenaf stalk. It is an object of the present invention for kenaf paper to be made from some combination of kenaf hurd, kenaf bast fiber, post-consumer recycled content wood pulp and post-industrial recycled content wood pulp. It is an object of the present invention for kenaf paper to be made from some combination of kenaf hurd, kenaf bast fiber, post-consumer recycled content wood pulp, post-industrial recycled content wood pulp, preservatives, chemicals and additives. It is an object of the present invention to use as low a hurd content percentage as possible to increase the strength of kenaf paper. It is an object of the present invention to make kenaf paper without using any clay, fillers, chemicals or additives. It is an object of the present invention for the kenaf paper to comprise clay, fillers, chemicals or additives. In an embodiment, the kenaf paper is made with more kenaf hurd fiber then kenaf bast hurd fiber.
It is an object of the present invention to harvest kenaf plants to make kenaf paper.
Tensile strength refers to the maximum stress needed to break a strip of paper sheet. Tensile strength is measured in two directions-machine direction, commonly abbreviated as MD, and cross direction, commonly abbreviated as CD. Cross direction is also referred to as transverse direction, commonly abbreviated as TD. MD means the direction that the paper web runs on a paper machine, while CD means the direction perpendicular to MD. It is an object of the present invention that kenaf paper have a tensile MD strength ranging from five pounds to two hundred pounds per inch, preferably from twenty pounds to one hundred pounds per inch. It is an object of the present invention that kenaf paper have a tensile CD strength ranging from five pounds to two hundred pounds per inch, preferably from twenty pounds to one hundred pounds per inch. It is an object of the present invention that kenaf paper have a MD strength greater than CD strength. It is an object of the present invention that kenaf paper have a MD strength greater than or equal to CD strength.
Elongation percentage refers to the stretch required to rupture a paper sheet. Elongation percentage is measured in two directions-machine direction, commonly abbreviated as MD, and cross direction, commonly abbreviated as CD. It is an object of the present invention that kenaf paper have an elongation MD percentage ranging from one half to twenty pounds per inch, preferably from two pounds to ten pounds per inch. It is an object of the present invention that kenaf paper have an elongation CD percentage ranging from one half pound to twenty pounds per inch, preferably from two pounds to ten pounds per inch. It is an object of the present invention that kenaf paper has more stretch built into it in both MD and CD directions than wood pulp paper. It is an object of the present invention that the greater MD and CD stretch percentages allow kenaf paper to fold without the risk of cracking.
It is an object of the present invention that kenaf paper be treated or coated with AKD sizing, a wax derivative. It is an object of the present invention to use AKD sizing as a preventative measure to reduce the level of curling in the kenaf corrugated linerboard, flute and cardboard cartons so that the kenaf box will lay flat on a surface.
A corrugated sheet consists of two major components—linerboard and medium. Linerboard are flat sheets. Medium is the fluted or arched paper found between two linerboards. Medium has a wavelike, corrugated shape and is glued between the two linerboards. The waves of the medium are called its flutes. It is an object of the present invention for the corrugated linerboard to comprise kenaf paper. It is an object of the present invention for the medium and its flutes to comprise kenaf paper. It is an object of the present invention for the corrugated linerboard and medium of a corrugated box to comprise kenaf paper.
The difference between a cardboard carton and a corrugated box is that a cardboard carton is formed by linerboard sheets and contains no medium or flute. Cardboard cartons are usually thinner than corrugated boxes. It is an object of the present invention to use cardboard cartons comprised of kenaf paper for lightweight objects. It is an object of the present invention to use cardboard cartons comprised of kenaf paper to transport or store popcorn served at venues such as movie theaters and sporting events.
The present invention relates to a cardboard sheet that is comprised of kenaf paper made from one to twenty five percent kenaf; the cardboard sheet used to form a carton. The present invention relates to a cardboard sheet that is comprised of kenaf paper made from twenty five to fifty percent kenaf; the cardboard sheet used to form a carton. The present invention relates to a cardboard sheet that is comprised of kenaf paper made from fifty to seventy-five percent kenaf; the cardboard sheet used to form a carton.
The present invention relates to a cardboard sheet that is comprised of kenaf paper made from seventy-five to one hundred percent kenaf; the cardboard sheet used to form a carton. It is an object of the present invention for the percentage of the cardboard sheet that does not comprise kenaf paper to be made of post-consumer waste recycled content wood pulp. It is an object of the present invention for the percentage of the cardboard sheet that does not comprise kenaf paper to be made of post-industrial recycled content wood pulp. It is an object of the present invention for the percentage of the cardboard sheet that does not comprise kenaf paper to be made of virgin wood pulp. It is an object of the present invention for the percentage of the cardboard sheet that does not comprise kenaf paper to be made from any combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp. It is an object of the present invention for the percentage of kenaf paper to be twenty to forty percent and for the combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp to be sixty to eighty percent. This is a preferred embodiment because of the costs of the of the different elements and the desire for biodegradability and compostability.
Corrugated boxes are typically used for shipping or storage of heavyweight items. It is an object of the present invention to use corrugated boxes comprised of kenaf paper for shipping or storage. It is an object of the present invention to use corrugated boxes comprised of kenaf paper to transport or store food such as pizza or donuts.
Four different types of wall board exist: single face board, single-wall board, double-wall board and triple-wall board Single face board has only two layers, a linerboard layer and a corrugated or fluted layer. It is an object of the present invention for single face board packaging to comprise kenaf paper. It is an object of the present invention for the linerboard layer to comprise kenaf paper. It is an object of the present invention for the corrugated or fluted layer to comprise kenaf paper. It is an object of the present invention for single face board packaging comprised of kenaf paper to be used as a cushioning material for objects in other containers.
Single-wall board is the most common type of corrugated cardboard. It consists of two outer linerboards and a middle layer of corrugated medium or flute. It is an object of the present invention for single-wall board boxes to comprise kenaf paper. It is an object of the present invention for the linerboards to comprise kenaf paper. It is an object of the present invention for the middle layer of corrugated medium or flute to comprise kenaf paper.
Double-wall board has two layers of corrugated fluting and three linerboards. It is an object of the present invention for double-wall board boxes to comprise kenaf paper. It is an object of the present invention for the linerboards to comprise kenaf paper. It is an object of the present invention for the corrugated fluting to comprise kenaf paper. It is an object of the present invention for double-wall board boxes comprised of kenaf paper to be used for heavier items such as large appliances.
Triple-wall board has three layers of corrugated fluting and four linerboards. It is an object of the present invention for triple-wall board boxes to comprise kenaf paper. It is an object of the present invention for the linerboards to comprise kenaf paper. It is an object of the present invention for the corrugated fluting to comprise kenaf paper. It is an object of the present invention for triple-wall board boxes comprised of kenaf paper to be used as export packaging for extremely heavy items.
The present invention relates to corrugated linerboard that is comprised of kenaf paper made from one to twenty five percent kenaf. The present invention relates to corrugated linerboard that is comprised of kenaf paper made from twenty five to fifty percent kenaf. The present invention relates to corrugated linerboard that is comprised of kenaf paper made from fifty to seventy-five percent kenaf. The present invention relates to corrugated linerboard that is comprised of kenaf paper made from seventy-five to one hundred percent kenaf. It is an object of the present invention for the percentage of the corrugated linerboard that does not comprise kenaf paper to be made of post-consumer waste recycled content wood pulp. It is an object of the present invention for the percentage of the corrugated linerboard that does not comprise kenaf paper to be made of post-industrial recycled content wood pulp. It is an object of the present invention for the percentage of the corrugated linerboard that does not comprise kenaf paper to be made of virgin wood pulp. It is an object of the present invention for the percentage of the corrugated linerboard that does not comprise kenaf paper to be made from any combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp. It is an object of the present invention for the percentage of kenaf corrugated linerboard to be twenty to forty percent and for the combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp to be sixty to eighty percent. This is a preferred embodiment because of the costs of the of the different elements and the desire for biodegradability and compostability.
The present invention relates to flute that is comprised of kenaf paper made from one to twenty five percent kenaf. The present invention relates to flute that is comprised of kenaf paper made from twenty five to fifty percent kenaf. The present invention relates to flute that is comprised of kenaf paper made from fifty to seventy-five percent kenaf. The present invention relates to flute that is comprised of kenaf paper made from seventy-five to one hundred percent kenaf. It is an object of the present invention for the percentage of the flute that does not comprise kenaf paper to be made of post-consumer waste recycled content wood pulp. It is an object of the present invention for the percentage of the flute that does not comprise kenaf paper to be made of post-industrial recycled content wood pulp. It is an object of the present invention for the percentage of the flute that does not comprise kenaf paper to be made of virgin wood pulp. It is an object of the present invention for the percentage of the flute that does not comprise kenaf paper to be made from any combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp. It is an object of the present invention for the percentage of kenaf paper of the flute to be twenty to forty percent and for the combination of post-consumer waste recycled content wood pulp, post-industrial recycled content wood pulp or virgin wood pulp to be sixty to eighty percent. This is a preferred embodiment because of the costs of the of the different elements and the desire for biodegradability and compostability.
The present invention relates to flutes comprised of kenaf paper that come in five basic heights and shapes. It is an object of the present invention that A-flute corrugated cardboard comprise kenaf paper. It is an object of the present invention that A-flute corrugated cardboard comprised of kenaf paper have a flute height ranging from one eighth to three eighths of an inch and have between thirty one flutes to thirty nine flutes per linear foot. It is an object of the present invention that A-flute corrugated cardboard comprised of kenaf paper provide structural strength and be used for packaging fragile items.
It is an object of the present invention that B-flute corrugated cardboard comprise kenaf paper. It is an object of the present invention that B-flute corrugated cardboard comprised of kenaf paper have a flute height ranging from one thirty second to one quarter of an inch and have between forty five flutes to fifty five flutes per linear foot. It is an object of the present invention that B-flute corrugated cardboard comprised of kenaf paper be commonly used for inner packaging components such as pads and partitions and die cut boxes. The present invention relates to die cut boxes whose walls lock into place, and whose lid typically closes with a tab.
It is an object of the present invention that C-flute corrugated cardboard comprise kenaf paper. It is an object of the present invention that C-flute corrugated cardboard comprised of kenaf paper have a flute height ranging from one sixteenth to three eighths of an inch and have between thirty five flutes to forty five flutes per linear foot. It is an object of the present invention that C-flute corrugated cardboard comprised of kenaf paper be used for shipping boxes and to secure such products as glass and furniture.
It is an object of the present invention that E-flute corrugated cardboard comprise kenaf paper. It is an object of the present invention that E-flute corrugated cardboard comprised of kenaf paper have a flute height ranging from one thirty second to one eighth of an inch and have between eighty five flutes to one hundred flutes per linear foot. It is an object of the present invention that E-flute corrugated cardboard comprised of kenaf paper be used for displays, pizza boxes, and packaging of such products as ceramics and cosmetics.
It is an object of the present invention that F-flute corrugated cardboard comprise kenaf paper. It is an object of the present invention that F-flute corrugated cardboard comprised of kenaf paper have a flute height ranging from one sixty fourth to one eighth of an inch and have between one hundred twenty flutes to one hundred thirty five flutes per linear foot. It is an object of the present invention that F-flute corrugated cardboard comprised of kenaf paper be used in fast food clamshell containers and packaging of such products as jewelry and shoes.
The present invention relates to three types of corrugated slotted containers comprised of kenaf paper—RSC, FOL, and HSC. It is an object of the present invention that a regular slotted container (RSC) box comprised of kenaf paper have four flaps on the top and bottom of the box, each flap with a length equal to one-half of the box width. The four flaps meet in the middle and can be taped closed. RSC is the most widely used style of corrugated shipping box. It is an object of the present invention that RSC boxes comprised of kenaf paper have C-flute cardboard. It is an object of the present invention that a full overlap slotted container (FOL) box comprised of kenaf paper have long closure flaps that overlap each other almost completely, creating extra layers of corrugated board that result in a strong, cushioned box. It is an object of the present invention that a half slotted container (HSC) box comprised of kenaf paper have four flaps on one side of the box, each flap with a length equal to one-half of the box width and have one flapless “open” side. HSC's can be used to create a telescope box.
Burst strength, typically assessed using the Mullen test, refers to the hydraulic pressure applied to a corrugated board's face until its linerboard component ruptures. Burst strength measures how much pressure it takes to push through the linerboard of a piece of corrugated board. Burst strength rating is measured in pounds per square inch and is closely related to the tensile strength of the linerboard. It is an object of the present invention that a single-wall corrugated box comprised of kenaf paper have a minimum burst strength ranging from one hundred pounds per square inch to four hundred pounds per square inch (PSI), preferably from two hundred pounds per square inch to three hundred pounds per square inch. It is an object of the present invention that a double-wall corrugated box comprised of kenaf paper have a minimum burst strength ranging from one hundred seventy five pounds per square inch to seven hundred pounds per square inch (PSI), preferably from two hundred pounds per square inch to six hundred pounds per square inch. It is an object of the present invention that an E flute corrugated box comprised of kenaf paper have a minimum burst strength ranging from one hundred twenty five pounds per square inch to two hundred pounds per square inch (PSI), preferably from one hundred fifty pounds per square inch to two hundred pounds per square inch.
The Edge Crush Test, commonly abbreviated as ECT, measures corrugated linerboard stacking strength, or the compression strength of a corrugated box. ECT measures how much pressure it takes to crush the corrugated board by pressing downward on it while the corrugated board is standing on its edge. ECT strength rating is measured in pounds per lineal inch of load bearing edge. It is an object of the present invention that a single-wall corrugated box comprised of kenaf paper have a minimum ECT ranging from twenty pounds per lineal inch to sixty pounds per lineal inch, preferably from thirty two pounds per lineal inch to fifty five pounds per lineal inch. It is an object of the present invention that a double-wall corrugated box comprised of kenaf paper have a minimum ECT ranging from forty pounds per lineal inch to ninety pounds per lineal inch. It is an object of the present invention that an E flute corrugated box comprised of kenaf paper have a minimum ECT ranging from twenty pounds per lineal inch to forty pounds per lineal inch, preferably from twenty five pounds per lineal inch to thirty five pounds per lineal inch.
It is an object of the present invention that a single-wall corrugated box comprised of kenaf paper have a minimum combined weight of facings, defined as the surface area of the box, ranging from forty five pounds to two hundred pounds, preferably from eighty pounds to one hundred eighty pounds. It is an object of the present invention that a single-wall corrugated box comprised of kenaf paper have a maximum weight of box and contents ranging from fifteen pounds to one hundred thirty pounds, preferably from sixty five pounds to one hundred twenty pounds. It is an object of the present invention that a single-wall corrugated box comprised of kenaf paper have maximum outside dimensions, including length, width and depth, ranging from thirty inches to one hundred twenty inches, preferably from seventy five inches to one hundred five inches.
It is an object of the present invention that a single-wall corrugated box with an ECT rating ranging from twenty eight pounds per lineal inch to thirty eight pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper used for moving and storage have length ranging from ten inches to thirty inches, widths ranging from eight inches to twenty six inches and depths ranging from nine inches to twenty six inches. It is an object of the present invention that an extra-small single-wall corrugated box with an ECT rating ranging from twenty eight pounds per lineal inch to thirty eight pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper used for moving and storage have length ranging from ten inches to seventeen inches, widths ranging from eight inches to fourteen inches and depths ranging from ten inches to fourteen inches.
It is an object of the present invention that a small single-wall corrugated box with an ECT rating ranging from twenty eight pounds per lineal inch to thirty eight pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper used for moving and storage have length ranging from fourteen inches to nineteen inches, widths ranging from nine inches to fourteen inches and depths ranging from nine inches to fourteen inches.
It is an object of the present invention that a medium single-wall corrugated box with an ECT rating ranging from twenty eight pounds per lineal inch to thirty eight pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper used for moving and storage have length ranging from fourteen inches to twenty four inches, widths ranging from thirteen inches to twenty inches and depths ranging from thirteen inches to twenty inches.
It is an object of the present invention that a large single-wall corrugated box with an ECT rating ranging from twenty eight pounds per lineal inch to thirty eight pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper used for moving and storage have length ranging from sixteen inches to thirty inches, widths ranging from thirteen inches to twenty six inches and depths ranging from fourteen inches to twenty six inches.
It is an object of the present invention that an extra-large single-wall corrugated box with an ECT rating ranging from twenty eight pounds per lineal inch to thirty eight pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper used for moving and storage have length ranging from twenty inches to twenty six inches, widths ranging from sixteen inches to twenty three inches and depths ranging from nineteen inches to twenty six inches.
It is an object of the present invention that a double-wall corrugated box with an ECT rating ranging from forty five pounds per lineal inch to fifty five pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper used for moving and storage have length ranging from ten inches to twenty six inches, widths ranging from eight inches to twenty six inches and depths ranging from nine inches to twenty six inches.
It is an object of the present invention that an extra-small double-wall corrugated box with an ECT rating ranging from forty five pounds per lineal inch to fifty five pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper and used for moving and storage have length ranging from ten inches to seventeen inches, widths ranging from eight inches to fourteen inches and depths ranging from ten inches to fourteen inches.
It is an object of the present invention that a small double-wall corrugated box with an ECT rating ranging from forty five pounds per lineal inch to fifty five pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper and used for moving and storage have length ranging from fourteen inches to nineteen inches, widths ranging from nine inches to fourteen inches and depths ranging from nine inches to fourteen inches.
It is an object of the present invention that a medium double-wall corrugated box with an ECT rating ranging from forty five pounds per lineal inch to fifty five pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper and used for moving and storage have length ranging from fourteen inches to twenty four inches, widths ranging from thirteen inches to twenty inches and depths ranging from thirteen inches to twenty inches.
It is an object of the present invention that a large double-wall corrugated box with an ECT rating ranging from forty five pounds per lineal inch to fifty five pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper and used for moving and storage have length ranging from sixteen inches to thirty inches, widths ranging from thirteen inches to twenty six inches and depths ranging from fourteen inches to twenty six inches.
It is an object of the present invention that an extra-large double-wall corrugated box with an ECT rating ranging from forty five pounds per lineal inch to fifty five pounds per lineal inch, with or without built-in perforated handles, comprised of kenaf paper and used for moving and storage have length ranging from twenty inches to twenty six inches, widths ranging from sixteen inches to twenty three inches and depths ranging from nineteen inches to twenty six inches.
It is an object of the present invention that a double-wall corrugated box comprised of kenaf paper have a minimum combined weight of facings, including center facings of the double-wall, ranging from eighty pounds to three hundred pounds. It is an object of the present invention that a double-wall corrugated box comprised of kenaf paper have a maximum weight of box and contents ranging from seventy pounds to two hundred pounds. It is an object of the present invention that a double-wall corrugated box comprised of kenaf paper have maximum outside dimensions, including length, width and depth, ranging from eighty inches to one hundred thirty inches.
It is an object of the present invention that an E flute corrugated box comprised of kenaf paper have a minimum combined weight of facings ranging from sixty pounds to ninety pounds, preferably from sixty five pounds to eighty five pounds.
It is an object of the present invention that an E flute corrugated box comprised of kenaf paper have a maximum weight of box and contents ranging from thirty pounds to sixty pounds, preferably from thirty five pounds to fifty pounds. It is an object of the present invention that an E flute corrugated box comprised of kenaf paper have maximum outside dimensions, including length, width and depth, ranging from forty inches to seventy inches, preferably from fifty inches to sixty inches.
It is an object of the present invention that the corrugated box comprised of kenaf have a box manufacturer's certificate, a circular stamp that includes the box manufacturer's name and other technical information, printed on the box.
It is an object of the present invention that the amount of kenaf pulp fibers and the length of those fibers in a corrugated sheet substantially contribute to box strength. For example, the difference between a 200 lb. box and a 275 lb. box is that the latter has more pulp fibers in its corrugated linerboard.
It is an object of the present invention that corrugated boxes comprised of kenaf paper be produced in traditional rectangular shapes and cubes, or elongated shapes and sizes for specialized uses. It is an object of the present invention that corrugated boxes comprised of kenaf paper be produced in cube boxes, which feature the same length on all edges and have the same square box shape on all sides. It is an object of the present invention that corrugated boxes comprised of kenaf paper be produced in multi-height boxes, which have a design that lets a user choose between various heights while keeping a fixed width and depth. It is an object of the present invention that corrugated boxes comprised of kenaf paper be produced in long boxes, which have a longer length compared to their width and height. Long boxes allow loading elongated items that can ship on their side or lying down flat. It is an object of the present invention that corrugated boxes comprised of kenaf paper be produced in tall boxes, which feature a smaller length and width compared to a taller height. Tall boxes are good for shipping tall items that can't be folded down and need to stay upright during transit. It is an object of the present invention that corrugated boxes comprised of kenaf paper be produced in telescoping boxes, which allow for shipping long items that may not fit into a single box. Telescoping boxes fit together. It is an object of the present invention that corrugated boxes comprised of kenaf paper be produced in side-loading boxes, which are often wide and thin and have an opening on the narrow side to load or unload times.
It is an object of the present invention that kenaf paper be brown in color, commonly called unbleached or kraft. It is an object of the present invention that kenaf paper be white in color, commonly called bleached. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be comprised of bleached kenaf paper. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be comprised of unbleached kenaf paper. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be of a color other than white or brown. It is an object of the present invention to use non-toxic bleaching to whiten kenaf paper. It is an object of the present invention that kenaf paper used to make cardboard carton or corrugated box and packaging products be whitened with hydrogen peroxide during the bleaching process.
It is an object of the present invention that the kenaf paper comprise a single-ply paper sheet. It is an object of the present invention that the kenaf paper comprise a double-ply paper sheet.
It is an object of the present invention for a kenaf paper cardboard carton or corrugated box to be closed with a closure device such as packing tape, adhesive tape, or a sticker. It is an object of the present invention for the closure mechanism to comprise a peel-off sticker or label attached to the kenaf paper cardboard carton to seal or reseal the carton, the peel-off sticker or label is defined as a device having a kenaf paper strip or piece that covers adhesive, and when the kenaf paper strip or piece is removed, adhesive is functional. It is an object of the present invention for the kenaf paper strip or piece consisting of kenaf paper to be recyclable, compostable, biodegradable or any combination. It is an object of the present invention for the peel-off strip to be a coupon.
It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to have handles. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box with handles for the handles to be built-in, perforated handles. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box with handles to have a handle on opposite sides of the carton or box.
The present invention relates to a kenaf paper cardboard carton or corrugated box made of flipside paper, namely a cardboard carton or corrugated box made with bleached kenaf paper on the outside and unbleached kenaf paper on the inside. The present invention relates to a kenaf paper cardboard carton or corrugated box made of flipside paper, namely a cardboard carton or corrugated box made with bleached kenaf paper on the inside and unbleached kenaf paper on the outside.
It is an object of the present invention that the kenaf paper be oil and grease resistant, preventing grease from escaping through the cardboard carton or corrugated box. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be oil and grease resistant. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be coated with an oil and grease resistant material.
It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be leak-proof. It is an object of the present invention that the kenaf paper cardboard carton or corrugated box be coated with a water-resistant material. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be moisture proof, preventing liquids or condensation from escaping the bag.
It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be recyclable. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be curbside recyclable.
The present invention relates to a kenaf paper cardboard carton or corrugated box that is more environmentally friendly than a cardboard carton or corrugated box made from virgin paper or even paper made with recycled content. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be toxin free. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be chlorine free. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box not to include BPAs (bisphenol A), Lead, Phthalates, and PFAs (perfluoroalkoxy alkanes). It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be biodegradable. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be compostable. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to have some combination of the following environmentally friendly features: chlorine free, toxin free, compostable, recyclable, biodegradable, BPA free, lead free, Phthalates free, PFA free.
It is an object of the present invention for a kenaf paper cardboard carton to be treated with wax to provide better storage and handling for the object or objects such as popcorn placed inside the box or carton. It is an object of the present invention for a kenaf paper cardboard carton to be double waxed. Double waxed is defined as adding a further layer of wax.
In an embodiment of the present invention, the kenaf paper cardboard carton or corrugated box have a face and a seamless construction, which provides an excellent surface area to accept all types of graphics on the top, bottom and sides of the carton or box.
It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be printable, allowing for ink and graphics to be attached to the carton or box. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be printable with water-soluble inks. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be printable with non-water-soluble inks. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to be printable with inks certified as food safe. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to comprise flexographic printed graphics or text, digitally printed graphics or text, post-printed graphics or text, or pre-printed graphics or text. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to have coupons, bar codes, or QR codes printed on the carton or box. It is an object of the present invention to use printed information on the kenaf paper cardboard carton or corrugated box such as bar codes to track sales of the kenaf paper cardboard carton or corrugated box or sales of items in the kenaf paper cardboard carton or corrugated box.
It is an object of the present invention for a kenaf paper cardboard carton or corrugated box to contain printed social messaging. It is an object of the present invention to use printed information on the kenaf paper cardboard carton or corrugated box such as bar codes to track the impact of social messaging on sales of the kenaf paper cardboard carton or corrugated box or sales of items in the kenaf paper cardboard carton or corrugated box. It is an object of the present invention for the kenaf paper cardboard carton or corrugated box to have an advertisement printed on it. It is an object of the present invention that the kenaf paper cardboard carton or corrugated box be used as an advertising vehicle to communicate messages, coupons or contests to customers.
The present invention relates to methods for printing from a digital-based image directly onto products made from kenaf paper. Digital printing refers to methods of printing from a digital-based image onto a surface or substrate, without requiring the need for separate, analog plates. Unlike conventional ink used in offset printing, the ink or toner used in digital printing does not permeate the substrate but forms a thin layer on the surface.
The present invention relates to a method of digital printing of graphics and/or text on a kenaf paper cardboard carton or corrugated box. It is an object of the present invention for the digital printing system to print repeated images of the graphics and/or text on the kenaf paper used to make a cardboard carton or corrugated box.
The present invention relates to a method that comprises using a separate digital printing system to pre-print single or multiple color graphics and/or text on rolls of kenaf paper used to make kenaf paper cardboard cartons or corrugated boxes. It is an object of the present invention for the method to comprise using a separate digital printing system to pre-print on rolls of kenaf paper prior to the kenaf paper being fed to a carton or box machine for producing cardboard cartons or corrugated boxes It is an object of the present invention for the ink or toner to form a thin layer on the surface of the kenaf paper. It is an object of the present invention for the ink or toner to be adhered to the kenaf paper by using some combination of fuser fluid, heat or UV curing. It is an object of the present invention for the digital printing system to print continuously on the kenaf paper as it is unrolled and fed to a cardboard carton or corrugated box making machine.
The present invention relates to a method that comprises using a digital printing system to post-print single or multiple color graphics and/or text on kenaf paper cardboard cartons or corrugated boxes. It is an object of the present invention for the method to comprise taking kenaf paper unassembled or unfolded cardboard cartons or corrugated boxes already separately produced on a carton or box machine and feeding the kenaf paper cardboard cartons or corrugated boxes to a separate digital printing system.
It is an object of the present invention for the method to comprise the digital printing system depositing ink or toner onto the kenaf paper cardboard carton or corrugated box surface to form an image. It is an object of the present invention for the ink or toner to form a thin layer on the surface of the kenaf paper cardboard carton or corrugated box. It is an object of the present invention for the ink or toner to be adhered to the kenaf paper cardboard carton or corrugated box by using some combination of fuser fluid, heat, or UV curing.
It is an object of the present invention to have a digital printing system to use inkjet printing featuring Piezo print heads to achieve photo quality printing onto kenaf cardboard cartons or corrugated boxes.
For the cardboard cartons and corrugated boxes, length is the longer dimension, width is the shorter dimension measured along the opening of the box and depth is the distance between the opening and opposite pan.
It is an object of the present invention for the kenaf cardboard carton or corrugated box to be closed using staples.
It is an object of the present invention for the kenaf cardboard carton or corrugated box to be closed using a folded flap.
It is an object of the present invention for the kenaf cardboard carton or corrugated box to have a corner guard made of multiple layers of kenaf cardboard sheets.
Minimum combined weight of facings is measured in pounds per thousand square feet vs max weight of box and contents, which is measured in pounds
Claims
1. A cardboard carton or corrugated box comprised of kenaf paper;
- said kenaf paper including machine made kenaf paper;
- said cardboard carton including a cardboard box.
2. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper
- comprises one hundred percent kenaf.
3. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper
- comprises one to twenty five percent kenaf.
4. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper
- comprises twenty five to fifty percent kenaf.
5. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper is
- comprises fifty to seventy-five percent kenaf.
6. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper
- comprises seventy-five to one hundred percent kenaf.
7. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper has
- a hurd content of less than fifteen percent.
8. The carboard carton or corrugated box of claim 7 wherein said kenaf paper
- that is not comprised of hurd fiber is comprised of bast fiber.
9. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper is
- comprised of:
- some combination of kenaf hurd, kenaf bast fiber, post-consumer recycled content
- wood pulp, post-industrial recycled content wood pulp and virgin wood pulp.
10. The cardboard carton or corrugated box of claim 9 further comprising clay, fillers, preservatives, chemicals or additives.
11. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper has
- a tensile MD strength ranging from five pounds to two hundred pounds per inch,
- a tensile CD strength ranging from five pounds to two hundred pounds per inch, and an elongation MD percentage ranging from one half to twenty pounds per inch, and
- an elongation CD percentage ranging from one half pound to twenty pounds per inch.
12. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper has
- an MD strength greater than or equal to the CD strength.
13. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper is
- treated or coated with AKD sizing to reduced level of curling in cardboard sheet and linerboard so kenaf cardboard carton or corrugated box will lay flat on surface.
14. The cardboard carton or corrugated box of claim 1 further comprising:
- a box manufacturer's certificate that is comprised of a circular stamp that includes a
- box manufacturer's name and other technical information printed on said box.
15. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper is
- unbleached or kraft.
16. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper is
- bleached.
17. The cardboard carton or corrugated box of claim 1 comprising a closure
- device comprising packing tape, adhesive tape, staples, a folded flap, a sticker, or some combination.
18. The cardboard carton or corrugated box of claim 1 having a corner guard made of multiple layers of cardboard sheets comprised of kenaf.
19. The cardboard carton or corrugated box of claim 1 wherein said carton or box
- comprises bleached kenaf paper on outside of said carton or box and unbleached kenaf
- paper on inside of said carton or box or
- said carton or box comprises bleached kenaf paper on inside of said carton or box and unbleached kenaf paper on outside of said carton or box.
20. The cardboard carton or corrugated box of claim 1 wherein said kenaf paper is
- oil and grease resistant.
21. The cardboard carton or corrugated box of claim 1 wherein said cardboard
- carton or corrugated box is leak-proof or coated with a water-resistant material, or moisture proof.
22. The cardboard carton or corrugated box of claim 1 wherein said carton or box is
- recyclable, or curbside recyclable, biodegradable, compostable, or both biodegradable and compostable.
23. The cardboard carton or corrugated box of claim 1 wherein said carton or box
- has some combination of environmentally friendly features: chlorine free, toxin free,
- compostable, recyclable, biodegradable, BPA free, lead free, Phthalates free and PFA free.
24. The cardboard carton or corrugated box of claim 1 wherein said carton or box
- has a face and a seamless construction, which provides a surface area to accept all types of graphics and inks on top, bottom and sides of said carton or box.
25. The cardboard carton or corrugated box of claim 1 wherein said carton or box
- has coupons, bar codes, or QR codes printed on said carton or box.
26. A cardboard sheet used to form said carton of claim 1 comprising kenaf paper.
27. The corrugated box of claim 1 wherein said corrugated box is a single-wall corrugated box, wherein said kenaf paper has a minimum burst strength ranging from one hundred pounds per square inch to four hundred pounds per
- square inch (PSI), and a minimum Edge Crush Test (ECT) ranging from twenty pounds per lineal inch to sixty pounds per lineal inch.
28. The corrugated box of claim 1 wherein said corrugated box is a double-wall corrugated box, wherein said kenaf paper has a minimum burst strength ranging from one hundred seventy five pounds per square inch to seven
- hundred pounds per square inch (PSI);
- a minimum ECT ranging from forty pounds per lineal inch to ninety pounds per lineal inch;
- a minimum combined weight of facings, including center facings of said double wall, ranging from eighty pounds to three hundred pounds;
- said box having a maximum weight of box and contents ranging from seventy pounds to two hundred pounds;
- said box having maximum outside dimensions, including length, width and depth ranging from eighty inches to one hundred thirty inches.
29. The corrugated box of claim 1 wherein said box is an E flute corrugated box wherein said kenaf paper has a minimum burst strength ranging from one hundred twenty five pounds per square inch to two hundred pounds per square inch (PSI);
- a minimum ECT ranging from twenty pounds per lineal inch to forty pounds per lineal inch;
- said box having a minimum combined weight of facings ranging from sixty pounds to ninety pounds;
- said box having a maximum weight of box and contents ranging from thirty pounds to sixty pounds;
- said box having maximum outside dimensions, including length, width and depth, ranging from forty inches to seventy inches.
30. The single-wall corrugated box of claim 27 having a minimum combined weight of facings ranging from forty five to two hundred pounds and a maximum weight of box and contents ranging from fifteen to one hundred thirty pounds.
31. A corrugated sheet consisting of a linerboard and a medium;
- said linerboard comprised of flat sheets of kenaf paper;
- said medium comprising fluted or arched paper glued between two linerboards;
- said linerboard and said medium comprised of kenaf paper.
32. A single face corrugated board comprising a linerboard and a corrugated medium or fluted layer;
- said single face board comprising kenaf paper.
33. A corrugated board comprising corrugated medium or flute and linerboards;
- said corrugated board comprising kenaf paper;
- said board having two layers of corrugated medium or flute and three linerboards.
34. The corrugated board of claim 33 wherein said corrugated board comprises three layers of corrugated medium or flute and four linerboards.
35. The single face corrugated board of claim 32 wherein said flute is A-flute, B-flute, C-flute, E-flute or F-flute.
36. The corrugated board of claim 33 wherein said flute is A-flute, B-flute, C-flute, E-flute or F-flute.
37. A corrugated slot container comprising a regular slotted container box comprised
- of kenaf paper;
- said box comprised of four flaps on top and four flaps on bottom of said box;
- said four flaps meet in middle on top of said box and can be taped closed;
- said four flaps meet in middle on bottom of said box and can be taped closed.
Type: Application
Filed: Oct 22, 2025
Publication Date: Apr 23, 2026
Inventor: Steve Kohn (Boca Raton, FL)
Application Number: 19/365,924
