US20160066601A1 - Edible 3d printer filament - Google Patents
Edible 3d printer filament Download PDFInfo
- Publication number
- US20160066601A1 US20160066601A1 US14/846,792 US201514846792A US2016066601A1 US 20160066601 A1 US20160066601 A1 US 20160066601A1 US 201514846792 A US201514846792 A US 201514846792A US 2016066601 A1 US2016066601 A1 US 2016066601A1
- Authority
- US
- United States
- Prior art keywords
- filament
- edible
- soluble polymer
- water soluble
- polymer compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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- 229940005550 sodium alginate Drugs 0.000 description 1
- 229940045902 sodium stearyl fumarate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 235000010356 sorbitol Nutrition 0.000 description 1
- 229940032147 starch Drugs 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 238000003815 supercritical carbon dioxide extraction Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 235000013616 tea Nutrition 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 229960003495 thiamine Drugs 0.000 description 1
- DPJRMOMPQZCRJU-UHFFFAOYSA-M thiamine hydrochloride Chemical compound Cl.[Cl-].CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N DPJRMOMPQZCRJU-UHFFFAOYSA-M 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
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- 239000011719 vitamin A Substances 0.000 description 1
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- 239000011716 vitamin B2 Substances 0.000 description 1
- 235000011912 vitamin B7 Nutrition 0.000 description 1
- 239000011735 vitamin B7 Substances 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 235000019166 vitamin D Nutrition 0.000 description 1
- 239000011710 vitamin D Substances 0.000 description 1
- 150000003710 vitamin D derivatives Chemical class 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
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- 239000011712 vitamin K Substances 0.000 description 1
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- 239000011652 vitamin K3 Substances 0.000 description 1
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- 229940011671 vitamin b6 Drugs 0.000 description 1
- 229940046008 vitamin d Drugs 0.000 description 1
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- 229940041603 vitamin k 3 Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229940100445 wheat starch Drugs 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/20—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents
- A23L29/206—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents of vegetable origin
- A23L29/212—Starch; Modified starch; Starch derivatives, e.g. esters or ethers
-
- A23L1/0076—
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/20—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents
- A23L29/206—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents of vegetable origin
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P30/00—Shaping or working of foodstuffs characterised by the process or apparatus
- A23P30/20—Extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Definitions
- the present invention relates generally to 3D printing, and more specifically, to an edible water-soluble polymer 3D printing filament.
- 3D Printing is a fast growing industry with a bright future. No longer constrained to high-end fabrication shops, there is an expanding consumer demand for 3D printers. Indeed, the 3D printer and services market was worth $2.2 billion in 2012 and is growing at 29% annually. 3D printers and accessories are currently being sold at consumer focused retail stores such as Best Buy® and Lowes®, which stands as evidence that 3D printers may become mass-market products in the very near future.
- 3D printers are now capable of making three-dimensional objects of almost any shape through an additive process in which successive layers of material are laid down under computer control. 3D printers are especially well-suited for making precision prototypes, in a wide range of materials. However, they have the potential to completely transform the way we make many mainstream products and to impact numerous major industries.
- PCT application number PCT/US2014/039170 published Nov. 27, 2014 shows a 3D printer 3D printer system in which different food materials are contained in respective capsules, and the 3D printer system auto-determines the contents of each capsule.
- a heating device adjusts the temperature of the material contained in the capsules based on the parameters and properties associated with the food materials, and the materials are extruded therefrom in an additive process.
- PLA long for polylactic acid
- the filaments are made by thermal extrusion
- PLA has a melting temperature 344 -352° F.
- PLA's extrusion temperature can vary between 320 and 430°F.
- ABS (short for acrylonitrile butadiene styrene) is a common thermoplastic that is essentially petroleum based. It melts at its glass transition temperature of approximately 221° F.
- Each of the foregoing plastics is hot-melt extruded into a filament and the filament is wound onto a spool for use with the 3D printer.
- the printer essentially re-extrudes the filament during 3D printing.
- Printer extrusion temperature can vary between 0 and 5001° F. (0-260°F.).
- Software controlling the printer calculates the extrusion volume based on the filament diameter, the diameter of the nozzle and the flow rate. A calculated length of filament is then pushed out of the hot nozzle.
- Ethanol extraction is a type of solvent extraction used to extract vegetable oil.
- the raw material is mixed with ethanol, which dissolves more of the oxidized aromatic constituents (alcohols, aldehydes, etc.), leaving behind the wax, fats, and other generally hydrophobic substances.
- the alcohol is evaporated under low-pressure, or with a rotary evaporator, leaving behind a “tincture” (a pure oil extract).
- the tincture may be further processed to remove any impurities that are still present from the solvent extraction leaving a pure oil extract.
- an edible 3D printer filament that incorporates an oil extract fir taste, odor or medicinal benefit, and which is capable of retaining this benefit despite repeated thermal extrusion.
- active ingredient in a liquid state, i.e. a tincture
- PVP polyvinylpyrrolidone
- modified starch approximately 1 part super disintegrant
- Powder derived from spray drying process is then used in combination with other excipient ingredients to achieve the correct mixture for final filament consistency.
- the ingredients for the lame n t can range in ratios depending on the active ingredient and the desired achievement of the filament, whether it be odor, taste, or medicinal benefit,
- the list of excipient ingredients for this mixture are as follows: active spray dried powder mixture, a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening agent (which also gives the benefit of being a stabilizer), a lubricant and preservative(s).
- the final mixture is combined in stages over low heat so as to not loose active ingredient(s)' integrity.
- the mixture is then removed from heat and meant to dry/cure in a cool, dry stable environment.
- the hardened mixture is then broken up and fed into an extruder with a die of 1.75 mm or 3 mm (diameters of standard 3D printer filaments).
- the filament that is extruded is allowed to dry/cure in a cool, dry stable environment.
- FIG. 1 is a flow chart of an exemplary method for producing, an edible 3D filament for use in a conventional 3D printer according to the invention.
- the present invention is an edible 3D printer filament that incorporates an extract for taste, odor or medicinal benefit, and which is capable of retaining this benefit despite repeated thermal extrusion.
- the 3D printer filament is composed of an edible thermoplastic formulated to retain taste, odor and/or medicinal benefit despite repeated extrusion, and to provide the intended benefit when consumed by people or animals.
- the edible thermoplastic filament of the present invention has good processing flowability and excellent mechanical properties which make it suitable for 3D printing into any desired shape.
- the edible thermoplastic filament contains approximately (1) part active ingredient (in a liquid state, i.e. a tincture), combined with approximately (3.5) parts polyvinylpyrrolidone (PVP), approximately (1.5) parts modified starch (such as a ratio of approximately 1:15 starch to citric acid, used as a.
- plasticizer such as Prejel PA5PH from DFE pharma® (a cold water swelling fully pregelatinised potato starch in the form of a white, free flowing powder), and approximately (1) part super disintegrant, such as Lachtochem® powder, a milled lactose powder likewise available from DFE pharma®.
- Ingredients are mixed using any standard mixing equipment such as an ultrasonication machine, centrifuge, etc.
- Mixture is spray dried using a spray drier such as, for example, a BÜCHI Mini Spray Dryer B-290 (BÜCHI Labortechnik AG, Flawil, Switzerland).
- Mixture is spray dried with approximate parameters of an intake temperature in a range of 110-130° C., an aspiration rate within a range of of 065-100%, pump #001, nozzle cleaner set at a 4, and Q-flow at 30.
- the excipient ingredients for the filament can range in ratios depending on the active ingredient and the desired achievement of the filament, whether it be odor, taste, or medicinal benefit.
- the excipient ingredients may include any one or more of the following list of ingredients for this mixture, and most preferably all of them as follows: active spray dried powder mixture, a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, filler(s), flour, a binding or thickening agent (which also gives the benefit of being a stabilizer), a lubricant, and preservative(s).
- This final mixture is combined in stages over low heat ranging in temperature from 88.5° C.-119° C. (191.3° F.-246.2° F.) remaining conscious of active ingredient(s)' combustion temperature(s) so as to not lose active ingredient(s)' integrity.
- the mixture is then removed from heat and meant to dry/cure in a cool, dry stable environment.
- the hardened mixture is then broken up and fed into an extruder with a die of 1.75 mm or 3 mm (diameters of standard 3D printer filaments).
- the extruder should be set to a temperature of approximately 70-90° C. (158° F.-194° F.).
- the filament that is extruded is allowed to dry/cure in a cool, dry stable environment.
- the edible thermoplastic. filament When printed the edible thermoplastic. filament has good mechanical properties.
- the tensile strength preferably ranges from about 1 to 5 MPa for ease of chewing.
- the Young's Modulus preferably ranges from about 65 to 1000 MPa.
- the texture, pliancy, and consistency of the molded edible thermoplastic filament resembles a dense rubbery texture, which encourages human consumption.
- a method for producing an edible 3D filament for use in a conventional 3D primer according to the invention comprises the steps of:
- step 110 by the substeps of,
- a water soluble polymer compound comprising of active.
- polyvinylpyrrolidone (PVP), starch, and a super disintegrant is prepared by mixing and spray drying these ingredients to a powder form.
- the powder-form water soluble polymer compound is then nixed with excipient ingredients comprising a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening agent (which also gives the benefit of being a stabilizer), a lubricant and preservative.
- excipient ingredients comprising a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening agent (which also gives the benefit of being a stabilizer), a lubricant and preservative.
- the edible thermoplastic is hot-melt extruded through a die to produce a filament, and at step 150 the filament is wound onto a 3 D printer filament spool.
- Step 110 Extraction of Active (Oil)
- edible cannabis oil can be extracted for medical purposes for people with cancer, epilepsy, chronic pain, and other medical conditions.
- the extraction process can be used for other edible vegetable oils including herbs and spices, peppers, mushrooms, teas, essential oils, other actives such as Palcohol® (powdered alcohol), nicotine, and flavorings such as coffee.
- Palcohol® palcohol® (powdered alcohol), nicotine, and flavorings such as coffee.
- the dried flower of the cannabis plant is collected (substep 112 ), and extracted through whatever practice is most suitable, such as an ethanolic extraction, glycerin, or CO2 extraction, etc (substep 118 ),
- Step 120 Prepare Water Soluble Polymer Compound by Mixing Active Ingredient, PVP, Starch, and a Super Disintegrant.
- the active ingredient should be in a liquid state (liquid state can be achieved by adding food grade ethanol to active ingredient).
- Starch is another ingredient of the edible thermoplastic of the present invention.
- the starch is preferably a modified starch, with varying ratios of citric acid to amylose to amylopectin as a matter of design choice to determine the melting temperature for hot-melt extrusion.
- Pea starch, potato starch, corn starch, microcrystalline cellulose, wheat starch, rice starch, and combinations thereof may also be used.
- the PVP may be enriched by added nutrients or other active ingredients such as essential oils, or other actives such as Palcohol® (powdered alcohol).
- the nutrient ingredients may include but nor limited to vitamins, minerals, and amino acids: Vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B12, vitamin C, vitamin E, vitamin D, niacin (vitamin PP), biotin (vitamin H), menadione (vitamin K), folic acid, and pyridoxine (B6), etc.
- Amino acids which may be included, such as lysine, etc.
- Plasticizers may be added to adjust texture. Plasticizers enhance the flexibility of the final 3D printed articles made from the filament.
- the plasticizers should be edible. Typical edible plasticizers which can be used in the present invention include glycerol, triacetine, sorbitan, corn starch and citric acids with a ratio above 1:10, guar gum, and propylene glycol.
- modifiers may include carbohydrate gum such as magnesium stearate, stearic acid, sodium stearyl fumarate, hydrogenated vegetable oil, polyethylene glycol, sugars, mannitol, sorbitol, lactose, whey and yeast, microcrystalline cellulose, povidone, carpool, crospovidone, croscarmellose sodium, gellan gum, silicone dioxide, pectin, gelatin. carrageenan, carnauba wax, carob gum, agar, mannan, sodium alginate, and shellac.
- carbohydrate gum such as magnesium stearate, stearic acid, sodium stearyl fumarate, hydrogenated vegetable oil, polyethylene glycol, sugars, mannitol, sorbitol, lactose, whey and yeast, microcrystalline cellulose, povidone, carpool, crospovidone, croscarmellose sodium, gellan gum, silicone dioxide, pectin, gelatin. carrageenan, carn
- the super disintegrant such as Lachtochem® powder, a milled lactose powder likewise available from DFE pharma®, is added to this mixture to derive the desired break-down effect, which will allow filament to release active ingredient at the desired rate.
- a spray drier such as, for example, a BÜCHI Mini Spray Dryer B-290 (BÜCHI Labortechnik AG, Flawil, Switzerland).
- Mixture is spray dried with approximate parameters of: an intake temperature in a range of 110-130° C., an aspiration rate within a range of of 065-100%, pump #001, nozzle cleaner set at a 4, and Q-flow at 30.
- Step 130 Forming Edible Thermoplastic
- the powder form of the water soluble polymer compound is then mixed with excipients including: a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening, agent (which also gives the benefit of being a stabilizer), a lubricant and preservative, which is heated to form an edible thermoplastic.
- excipients including: a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening, agent (which also gives the benefit of being a stabilizer), a lubricant and preservative, which is heated to form an edible thermoplastic.
- thermoplastic is then added to a hot-melt extruder.
- the extruder should be set to a temperature of approximately 70-90° C. (158° F.-194° F.).
- the extruder will produce a 3D printer filament of either 1.75 or 3 millimeter diameter (depending on size of die), the filament is dry/cured in a cool, dry stable environment.
- Step 150 Wind Onto Filament Spool
- the filament above is then wound onto a conventional 3D printer spool.
- the wound filament can then be printed from any standard 3D printer, at a temperature in a range of 70-90° C. (158° F.-194° F.).
- the instant invention provides a 3D printer filament that incorporates an oil extract for taste, odor or medicinal benefit, and which is capable of retaining this benefit despite the repeated thermal extrusion involved in 3D printing.
- the edible filament is composed of an edible thermoplastic formulated to retain taste, odor and/or medicinal benefit despite repeated extrusion, and to provide the intended benefit when consumed by people or animals.
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- Polymers & Plastics (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
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Abstract
The present invention relates to an edible 3D printer filament that incorporates an active ingredient such as an oil extract for taste, odor or medicinal benefit, and which is capable of retaining this benefit, despite the repeated thermal extrusion involved in 3D printing. The filament is made by mixing the active ingredient extraction with polyvinylpyrrolidone (PVP), starch, and super disintegrant, and spray drying the result to a powderized form. The powderized water soluble polymer with active ingredient is mixed with excipient ingredients including a plasticizer, colored/dyed arabic gum, a gelling agent, fillers, flour, a binding or thickening agent (which also gives the benefit of being, a stabilizer), a lubricant, and a preservative, and is heated. The result is hot melt extruded into a filament with a diameter of 1.75 mm or 3 mm. When printed, the thermoplastic has good strength, stiffness, and physical properties, and can be 3D-printed in any shape.
Description
- The present application derives priority from U.S. provisional application Ser. No. 62/046,923 filed 6 Sep. 2014.
- 1. Field of the Invention
- The present invention relates generally to 3D printing, and more specifically, to an edible water-
soluble polymer 3D printing filament. - 2. Description of the Background
- 3D Printing is a fast growing industry with a bright future. No longer constrained to high-end fabrication shops, there is an expanding consumer demand for 3D printers. Indeed, the 3D printer and services market was worth $2.2 billion in 2012 and is growing at 29% annually. 3D printers and accessories are currently being sold at consumer focused retail stores such as Best Buy® and Lowes®, which stands as evidence that 3D printers may become mass-market products in the very near future.
- 3D printers are now capable of making three-dimensional objects of almost any shape through an additive process in which successive layers of material are laid down under computer control. 3D printers are especially well-suited for making precision prototypes, in a wide range of materials. However, they have the potential to completely transform the way we make many mainstream products and to impact numerous major industries.
- There have been attempts to adapt 3D printer technology for the printing of foods. For example, PCT application number PCT/US2014/039170 published Nov. 27, 2014 shows a
3D printer 3D printer system in which different food materials are contained in respective capsules, and the 3D printer system auto-determines the contents of each capsule. A heating device adjusts the temperature of the material contained in the capsules based on the parameters and properties associated with the food materials, and the materials are extruded therefrom in an additive process. This and other known efforts at 3D printing of food rely on a substantial modification of the core printing technology to extrude the food material. - Conventional 3D printers use a spool of filament. There are many types of filament available. PLA (Polylactic Acid) and Acrylonitrile butadiene styrene (ABS) are the most commonly used
desktop 3D printing; materials, both thermoplastics. - PLA (short for polylactic acid) is a plastic made of renewable starches such as corn and sugarcane. The filaments are made by thermal extrusion, PLA has a melting temperature 344 -352° F., and PLA's extrusion temperature can vary between 320 and 430°F.
- ABS (short for acrylonitrile butadiene styrene) is a common thermoplastic that is essentially petroleum based. It melts at its glass transition temperature of approximately 221° F.
- Each of the foregoing plastics is hot-melt extruded into a filament and the filament is wound onto a spool for use with the 3D printer. The printer essentially re-extrudes the filament during 3D printing. Printer extrusion temperature can vary between 0 and 5001° F. (0-260°F.). Software controlling the printer calculates the extrusion volume based on the filament diameter, the diameter of the nozzle and the flow rate. A calculated length of filament is then pushed out of the hot nozzle.
- The two-step heating required of conventional 3D primer filaments destroys many of the characteristics of food. Oils have been extracted from plants for thousands of years, some of these vegetable oils are consumed directly, and others indirectly as ingredients in food. Terpenes are one of the organic compounds extracted from certain plants to provide aromas, flavoring, and therapeutic effects. Some oils, such as olive, sesame, or almond oil, are used specifically for the flavor they impart. There are a variety of methods of oil extraction, such as distillation, solvent extraction, expression, enfleurage, and super critical Carbon Dioxide extraction. The results of the extracts are either essential oils, absolutes, tinctures, concretes, or butters, depending on the amount of waxes and solids in the extracted product. Ethanol extraction is a type of solvent extraction used to extract vegetable oil. The raw material is mixed with ethanol, which dissolves more of the oxidized aromatic constituents (alcohols, aldehydes, etc.), leaving behind the wax, fats, and other generally hydrophobic substances. The alcohol is evaporated under low-pressure, or with a rotary evaporator, leaving behind a “tincture” (a pure oil extract). The tincture may be further processed to remove any impurities that are still present from the solvent extraction leaving a pure oil extract.
- Heat, chemical solvents, or exposure to oxygen denature most aromatic compounds, either changing their odor character or rendering them odorless. This is an obstacle for 3D printing, which entails two distinct heating steps. The standard two-step heating required of 3D printers would theoretically destroy the taste, odor or efficacy of vegetable oil extracts CO2 super critical extraction machine uses elevated heat and high pressure to get the active ingredients out of many plant types. CO2 super critical extraction's low toxicity and low environmental impact makes it a desirable process as there is little to no denaturing of the terpenes. As there remains a need for a 3D printer filament suitable for use in conventional 3D printers that incorporates at oil extract for taste, odor or medicinal benefit, and retains this benefit throughout heating processes. This will facilitate custom 3D printing of “edible art” safe for consumption by people and animals. Such a 3D printing filament and method for manufacturing is disclosed and claimed herein.
- Accordingly, there is provided an edible 3D printer filament that incorporates an oil extract fir taste, odor or medicinal benefit, and which is capable of retaining this benefit despite repeated thermal extrusion.
- An edible 3D printer filament is herein described that comprises an edible thermoplastic comprising 1 part active ingredient (in a liquid state, i.e. a tincture), combined with approximately 3.5 parts polyvinylpyrrolidone (PVP), approximately 1.5 parts modified starch , and approximately 1 part super disintegrant,=Ingredients are mixed using any standard mixing equipment=.
- Powder derived from spray drying process is then used in combination with other excipient ingredients to achieve the correct mixture for final filament consistency. The ingredients for the lame n t can range in ratios depending on the active ingredient and the desired achievement of the filament, whether it be odor, taste, or medicinal benefit, The list of excipient ingredients for this mixture are as follows: active spray dried powder mixture, a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening agent (which also gives the benefit of being a stabilizer), a lubricant and preservative(s). The final mixture is combined in stages over low heat so as to not loose active ingredient(s)' integrity. Once the added ingredients have melted and homogeneously been mixed the mixture is then removed from heat and meant to dry/cure in a cool, dry stable environment. The hardened mixture is then broken up and fed into an extruder with a die of 1.75 mm or 3 mm (diameters of standard 3D printer filaments). The filament that is extruded is allowed to dry/cure in a cool, dry stable environment.
- Other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiment and certain modifications thereof, in which:
-
FIG. 1 is a flow chart of an exemplary method for producing, an edible 3D filament for use in a conventional 3D printer according to the invention. - The present invention is an edible 3D printer filament that incorporates an extract for taste, odor or medicinal benefit, and which is capable of retaining this benefit despite repeated thermal extrusion. The 3D printer filament is composed of an edible thermoplastic formulated to retain taste, odor and/or medicinal benefit despite repeated extrusion, and to provide the intended benefit when consumed by people or animals.
- The edible thermoplastic filament of the present invention has good processing flowability and excellent mechanical properties which make it suitable for 3D printing into any desired shape. In one currently preferred embodiment of the present invention the edible thermoplastic filament contains approximately (1) part active ingredient (in a liquid state, i.e. a tincture), combined with approximately (3.5) parts polyvinylpyrrolidone (PVP), approximately (1.5) parts modified starch (such as a ratio of approximately 1:15 starch to citric acid, used as a. plasticizer), such as Prejel PA5PH from DFE pharma® (a cold water swelling fully pregelatinised potato starch in the form of a white, free flowing powder), and approximately (1) part super disintegrant, such as Lachtochem® powder, a milled lactose powder likewise available from DFE pharma®. Ingredients are mixed using any standard mixing equipment such as an ultrasonication machine, centrifuge, etc. Mixture is spray dried using a spray drier such as, for example, a BÜCHI Mini Spray Dryer B-290 (BÜCHI Labortechnik AG, Flawil, Switzerland). Mixture is spray dried with approximate parameters of an intake temperature in a range of 110-130° C., an aspiration rate within a range of of 065-100%, pump #001, nozzle cleaner set at a 4, and Q-flow at 30.
- Powder derived from spray drying process is then used in combination with other excipient ingredients to achieve the correct mixture for final filament consistency. The excipient ingredients for the filament can range in ratios depending on the active ingredient and the desired achievement of the filament, whether it be odor, taste, or medicinal benefit. The excipient ingredients may include any one or more of the following list of ingredients for this mixture, and most preferably all of them as follows: active spray dried powder mixture, a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, filler(s), flour, a binding or thickening agent (which also gives the benefit of being a stabilizer), a lubricant, and preservative(s). This final mixture is combined in stages over low heat ranging in temperature from 88.5° C.-119° C. (191.3° F.-246.2° F.) remaining conscious of active ingredient(s)' combustion temperature(s) so as to not lose active ingredient(s)' integrity. Once the added ingredients have melted and homogeneously been mixed the mixture is then removed from heat and meant to dry/cure in a cool, dry stable environment. The hardened mixture is then broken up and fed into an extruder with a die of 1.75 mm or 3 mm (diameters of standard 3D printer filaments). The extruder should be set to a temperature of approximately 70-90° C. (158° F.-194° F.). The filament that is extruded is allowed to dry/cure in a cool, dry stable environment.
- When printed the edible thermoplastic. filament has good mechanical properties. The tensile strength preferably ranges from about 1 to 5 MPa for ease of chewing. The Young's Modulus preferably ranges from about 65 to 1000 MPa. The texture, pliancy, and consistency of the molded edible thermoplastic filament resembles a dense rubbery texture, which encourages human consumption.
- As seen in
FIG. 1 , a method for producing an edible 3D filament for use in a conventional 3D primer according to the invention comprises the steps of: - producing an essential oil tincture. at
step 110, by the substeps of, -
- obtaining dried plant material (substep 112), and
- performing oil extraction on the dried plant material (substep 118).
- The foregoing produces an essential oil tincture that is pure.
- Next, at step 120 a water soluble polymer compound comprising of active. polyvinylpyrrolidone (PVP), starch, and a super disintegrant is prepared by mixing and spray drying these ingredients to a powder form.
- At
step 130 the powder-form water soluble polymer compound is then nixed with excipient ingredients comprising a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening agent (which also gives the benefit of being a stabilizer), a lubricant and preservative. This final mixtures is heated to form an edible thermoplastic. - At
step 140 the edible thermoplastic is hot-melt extruded through a die to produce a filament, and atstep 150 the filament is wound onto a 3D printer filament spool. - Each of the foregoing. steps is herein described below in more detail.
- Step 110: Extraction of Active (Oil)
- By way of example, edible cannabis oil can be extracted for medical purposes for people with cancer, epilepsy, chronic pain, and other medical conditions. One skilled in the art will readily understand that the extraction process can be used for other edible vegetable oils including herbs and spices, peppers, mushrooms, teas, essential oils, other actives such as Palcohol® (powdered alcohol), nicotine, and flavorings such as coffee. For cannabis oil the dried flower of the cannabis plant is collected (substep 112), and extracted through whatever practice is most suitable, such as an ethanolic extraction, glycerin, or CO2 extraction, etc (substep 118),
- Step 120: Prepare Water Soluble Polymer Compound by Mixing Active Ingredient, PVP, Starch, and a Super Disintegrant.
- The active ingredient should be in a liquid state (liquid state can be achieved by adding food grade ethanol to active ingredient).
- Starch is another ingredient of the edible thermoplastic of the present invention. The starch is preferably a modified starch, with varying ratios of citric acid to amylose to amylopectin as a matter of design choice to determine the melting temperature for hot-melt extrusion. Pea starch, potato starch, corn starch, microcrystalline cellulose, wheat starch, rice starch, and combinations thereof may also be used.
- In order to provide nutritional, or other supplemental benefits, the PVP may be enriched by added nutrients or other active ingredients such as essential oils, or other actives such as Palcohol® (powdered alcohol). In certain embodiments of the invention, the nutrient ingredients may include but nor limited to vitamins, minerals, and amino acids: Vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin B12, vitamin C, vitamin E, vitamin D, niacin (vitamin PP), biotin (vitamin H), menadione (vitamin K), folic acid, and pyridoxine (B6), etc. Minerals which may be included, such as iron, zinc, etc. Amino acids which may be included, such as lysine, etc. These and other vitamins minerals, and amino acids may be added as an active ingredient to the PVP polymer compound for producing the edible thermoplastic filament of the present invention. Plasticizers may be added to adjust texture. Plasticizers enhance the flexibility of the final 3D printed articles made from the filament. The plasticizers should be edible. Typical edible plasticizers which can be used in the present invention include glycerol, triacetine, sorbitan, corn starch and citric acids with a ratio above 1:10, guar gum, and propylene glycol.
- In addition to the naturally occurring extracted plant oils, chemically modified plant proteins can be used to improve the processing flowability and physical properties of the composition Other modifiers may also be added to the mixture to enhance the mechanical properties. Such modifiers may include carbohydrate gum such as magnesium stearate, stearic acid, sodium stearyl fumarate, hydrogenated vegetable oil, polyethylene glycol, sugars, mannitol, sorbitol, lactose, whey and yeast, microcrystalline cellulose, povidone, carpool, crospovidone, croscarmellose sodium, gellan gum, silicone dioxide, pectin, gelatin. carrageenan, carnauba wax, carob gum, agar, mannan, sodium alginate, and shellac.
- The super disintegrant, such as Lachtochem® powder, a milled lactose powder likewise available from DFE pharma®, is added to this mixture to derive the desired break-down effect, which will allow filament to release active ingredient at the desired rate.
- These ingredients are mixed together, and then spray dried using a spray drier such as, for example, a BÜCHI Mini Spray Dryer B-290 (BÜCHI Labortechnik AG, Flawil, Switzerland).
- Mixture is spray dried with approximate parameters of: an intake temperature in a range of 110-130° C., an aspiration rate within a range of of 065-100%, pump #001, nozzle cleaner set at a 4, and Q-flow at 30.
- Step 130: Forming Edible Thermoplastic
- The powder form of the water soluble polymer compound is then mixed with excipients including: a plasticizer, arabic gum that has been colored with standard food grade dyes or colorants, a gelling agent, fillers, flour, a binding or thickening, agent (which also gives the benefit of being a stabilizer), a lubricant and preservative, which is heated to form an edible thermoplastic.
- Step 140: Extrusion
- The thermoplastic is then added to a hot-melt extruder. The extruder should be set to a temperature of approximately 70-90° C. (158° F.-194° F.). The extruder will produce a 3D printer filament of either 1.75 or 3 millimeter diameter (depending on size of die), the filament is dry/cured in a cool, dry stable environment.
- Step 150: Wind Onto Filament Spool
- The filament above is then wound onto a conventional 3D printer spool. The wound filament can then be printed from any standard 3D printer, at a temperature in a range of 70-90° C. (158° F.-194° F.).
- Accordingly, the instant invention provides a 3D printer filament that incorporates an oil extract for taste, odor or medicinal benefit, and which is capable of retaining this benefit despite the repeated thermal extrusion involved in 3D printing. The edible filament is composed of an edible thermoplastic formulated to retain taste, odor and/or medicinal benefit despite repeated extrusion, and to provide the intended benefit when consumed by people or animals. This application is intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains.
Claims (14)
1. A method for producing an edible filament for use in a conventional 3D printer, comprising the steps of:
producing an essential oil by the substeps of
obtaining dried plant material,
performing an extraction on said plant material to produce an essential oil (active ingredient) therefrom;
preparing a water soluble polymer compound by mixing;
active ingredient,
polyvinylpyrrolidone (PVP),
starch, and
a super disintegrant;
spray drying said water soluble polymer compound;
mixing and heating said powderized water soluble polymer compound with a plasticizer, colored arabic gum, a gelling agent, filler, flour, a binding or thickening agent, a lubricant, and a preservative, thereby forming an edible thermoplastic;
hot-melt extruding said edible thermoplastic through a die to produce a filament; and
winding said filament on a spool.
2. The method of claim 1 , wherein said step of hot-melt extruding said edible thermoplastic comprises extruding through a die having a 1.75 mm diameter.
3. The method of claim 1 , wherein said step of hot-melt extruding said edible thermoplastic comprises extruding through a die having a 3 mm diameter.
4. The method of claim 1 , wherein said step of hot-melt extruding said edible thermoplastic comprises extruding through a die at a temperature within a range from approximately 70-90° C. (158° F.-194° F.).
5. The method of claim 1 , wherein said step of preparing a water soluble polymer compound comprises mixing approximately 1 part of said active ingredient 3.5 parts polyvinylpyrrolidone (PVP) 1.5 parts starch, and 1 part super disintegrant, and then spray drying said mixture.
6. A 3D printer filament comprising:
an edible thermoplastic comprising of a powderized water soluble polymer compound made up of;
approximately 1 part essential oil of plant material derived from extraction,
approximately 3.5 parts polyvinylpyrrolidone,
approximately 1.5 parts starch, and
approximately 1 part super disintegrant;
said water soluble polymer compound being mixed and heated with;
a plasticizer,
arabic gum that has been colored with standard food grade dyes or colorants,
a gelling agent,
flour,
a binding or thickening agent;
a lubricant; and
preservative;
said edible thermoplastic being extruded into a filament having a diameter of 1.75 mm or 3 mm.
7. A method for producing an edible filament for use in a conventional 3D printer, comprising the steps of:
obtaining an active ingredient;
preparing a water soluble polymer compound by mixing said active ingredient with polyvinylpyrrolidone (PVP), starch and a super disintegrant;
spray drying said water soluble polymer compound to a powderized form;
mixing and heating said powderized water soluble polymer compound with any one or more excipient ingredients from among the group consisting of a plasticizer, arabic gum, a gelling agent, a filler, flour, a binding agent, a thickening agent, a lubricant, and a preservative, to form a hardened edible thermoplastic;
hot-melt extruding said edible thermoplastic through a die to produce a filament; and
winding said filament on a spool.
8. The method of claim 7 , wherein said active ingredient is an essential oil.
9. The method of claim 8 , wherein said step of obtaining said essential oil further comprises the substeps of,
obtaining dried plant material,
performing an extraction on said dried plant material to produce an essential oil therefrom.
10. The method of claim 7 , wherein said step of hot-melt extruding said edible thermoplastic comprises extruding through a die having a 1.75 mm diameter.
11. The method of claim 7 , wherein said step of hot-melt extruding said edible thermoplastic comprises extruding through a die having a 3 mm diameter.
12. The method of claim 7 , wherein said step of hot-melt extruding said edible thermoplastic comprises extruding through a die at a temperature within a range from approximately 70-90° C. (158-194° F.).
13. The method of claim 7 , wherein said step of preparing a water soluble polymer comprises mixing approximately 1 part essential oil, 3.5 parts polyvinylpyrrolidone (PVP), 1.5 parts starch, and 1 part super-disintegrant.
14. The method of claim 7 , wherein said step of mixing and heating said powderized water soluble polymer compound comprises mixing with all excipient ingredients including a plasticizer, arabic gum, a gelling agent, a filler, flour, a binding agent, a thickening agent, a lubricant, and a preservative, to form a hardened edible thermoplastic.
Priority Applications (2)
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US14/846,792 US20160066601A1 (en) | 2014-09-06 | 2015-09-06 | Edible 3d printer filament |
US15/958,611 US11439171B2 (en) | 2014-09-06 | 2018-04-20 | Edible 3D printer filament |
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US201462046923P | 2014-09-06 | 2014-09-06 | |
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US20160066601A1 true US20160066601A1 (en) | 2016-03-10 |
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US15/958,611 Active 2037-06-16 US11439171B2 (en) | 2014-09-06 | 2018-04-20 | Edible 3D printer filament |
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US11439171B2 (en) | 2022-09-13 |
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