ES2933271B2 - Compostable and biodegradable food container - Google Patents
Compostable and biodegradable food container Download PDFInfo
- Publication number
- ES2933271B2 ES2933271B2 ES202130752A ES202130752A ES2933271B2 ES 2933271 B2 ES2933271 B2 ES 2933271B2 ES 202130752 A ES202130752 A ES 202130752A ES 202130752 A ES202130752 A ES 202130752A ES 2933271 B2 ES2933271 B2 ES 2933271B2
- Authority
- ES
- Spain
- Prior art keywords
- compostable
- tray
- food container
- biodegradable
- biodegradable food
- 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.)
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- 235000013305 food Nutrition 0.000 title claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- -1 alkyl ketene dimer Chemical compound 0.000 claims description 6
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 6
- 239000004626 polylactic acid Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 3
- 229920002522 Wood fibre Polymers 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004816 latex Substances 0.000 claims description 3
- 229920000126 latex Polymers 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000002025 wood fiber Substances 0.000 claims description 3
- 229920000298 Cellophane Polymers 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000002361 compost Substances 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009920 food preservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
- Biological Depolymerization Polymers (AREA)
- Wrappers (AREA)
Description
DESCRIPCIÓN DESCRIPTION
Contenedor de alim entos com postable y biodegradable Compostable and biodegradable food container
CAMPO TÉCNICO TECHNICAL FIELD
El objeto de la presente invención, tal como se expresa en el enunciado de esta memoria descriptiva, hace referencia a un contenedor compostable y biodegradable utilizable preferentemente para contener productos frescos, aunque es útil para contener cualquier tipo de alimentos, constituido por una bandeja sobre la que se aplica por termosellado un film de cierre transparente que permite su reciclado como abono al finalizar su ciclo de vida útil sin necesidad de separar la bandeja del film de cierre y que presenta una capacidad de barrera equivalente al de un contenedor no biodegradable. The object of the present invention, as expressed in the statement of this specification, refers to a compostable and biodegradable container preferably used to contain fresh products, although it is useful to contain any type of food, consisting of a tray on the that a transparent closing film is applied by heat sealing that allows it to be recycled as fertilizer at the end of its useful life cycle without having to separate the tray from the closing film and that has a barrier capacity equivalent to that of a non-biodegradable container.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Actualmente, para el envasado de productos frescos, es habitual el uso de bandejas fabricadas en Polipropileno (PP) o Polietilenoteraflato (PET) sobre las cuales se aplica film de cierre realizado a partir de una lámina transparente de polietileno (PE). Currently, for packaging fresh products, it is common to use trays made of Polypropylene (PP) or Polyethylene Teraflate (PET) on which a closing film made from a transparent polyethylene (PE) sheet is applied.
Esta configuración, es idónea operativamente, ya que el PP y PET son materiales termoconformables fácilmente termosoldables con el PE y presentan un coeficiente de permeabilidad al vapor y al oxígeno muy bajo, lo que les confiere una alta capacidad de barrera, de manera que, envasando el producto en una atmósfera inerte, mejoran notablemente su conservación. This configuration is ideal operationally, since PP and PET are thermoformable materials that are easily heat-welded with PE and have a very low vapor and oxygen permeability coefficient, which gives them a high barrier capacity, so that, packaging the product in an inert atmosphere, significantly improve its conservation.
Sin embargo, todos estos polímeros realizados a partir de (combustibles) fósiles, al finalizar su vida útil, constituyen un residuo de muy difícil eliminación al no ser materiales biodegradables y cuyo reciclado exige una costosa gestión del residuo. However, all these polymers made from fossil (fuels), at the end of their useful life, constitute waste that is very difficult to eliminate as they are not biodegradable materials and whose recycling requires expensive waste management.
Como alternativa a las bandejas realizadas en materiales fósiles, se utilizan bandejas realizadas en celulosa que presentan una buena capacidad de termo conformado y son biodegradables, así como compostables. Estas bandejas, al final de su vida útil, constituyen un residuo que se descompone por sí mismo, por lo que no resultan problemáticas respecto al medioambiente y pueden ser recicladas como abono. As an alternative to trays made of fossil materials, trays made of cellulose are used that have good thermoforming capacity and are biodegradable, as well as compostable. These trays, at the end of their useful life, constitute waste that decomposes on its own, so they are not problematic for the environment and can be recycled as compost.
Sin embargo, la celulosa no presenta una buena capacidad de termosoldadura, lo que dificulta la aplicación del film de cierre. A la vez, presenta un coeficiente de permeabilidad al vapor y al oxígeno relativamente alto, por lo que no tiene una capacidad de barrera equivalente a las bandejas convencionales. However, cellulose does not have good heat-sealing capacity, which makes the application of the closure film difficult. At the same time, it has a relatively high vapor and oxygen permeability coefficient, so it does not have a barrier capacity equivalent to conventional trays.
Además, los materiales biodegradables y compostables transparentes que pueden utilizarse como film de cierre, presentan un coeficiente de permeabilidad al vapor y al oxígeno alto, por lo que su capacidad de barrera es inadecuada para conservar alimentos frescos. Furthermore, transparent biodegradable and compostable materials that can be used as closure films have a high vapor and oxygen permeability coefficient, making their barrier capacity inadequate for preserving fresh food.
Una solución de compromiso es la utilización de bandejas de celulosa sobre las que se aplica un film de cierre polimérico mediante una sustancia termo sellable intermediaria. A compromise solution is the use of cellulose trays on which a polymeric closing film is applied using an intermediate heat-sealable substance.
Esta solución presenta el inconveniente de que es necesario separar la parte compostable de la no compostable para poder reciclar el residuo como abono. Por otro lado, si bien la capacidad de barrera del film de cierre es elevada, no es así con la de la bandeja, por lo que la capacidad de conservación de alimentos frescos es inferior a la de un contenedor no biodegradable convencional. This solution has the disadvantage that it is necessary to separate the compostable part from the non-compostable part in order to recycle the waste as fertilizer. On the other hand, although the barrier capacity of the closing film is high, this is not the case with that of the tray, so the capacity for preserving fresh food is lower than that of a conventional non-biodegradable container.
Sería deseable el desarrollo de un contenedor compostable y biodegradable donde la bandeja y el film de cierre pudiesen unirse mediante termo soldadura común y que, en conjunto, presente una óptima capacidad de barrera al vapor y al oxígeno. It would be desirable to develop a compostable and biodegradable container where the tray and the closing film could be joined by common thermo-welding and which, together, present an optimal vapor and oxygen barrier capacity.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
Con el fin de superar este inconveniente, se ha diseñado el nuevo contenedor de alimentos compostable y biodegradable. In order to overcome this drawback, the new compostable and biodegradable food container has been designed.
Este contenedor consta de una bandeja de un material mezcla de varios componentes específicos, tratada con un agente impermeabilizante, sobre la que se aplica por termosoldadura un film de cierre realizado también en un material compuesto concreto. This container consists of a tray made of a mixture of several specific components, treated with a waterproofing agent, on which a closing film also made of a specific composite material is applied by heat welding.
El film de cierre está compuesto por una lámina transparente confeccionada en un 93 a 96% de ácido poliláctico y en un 4 a 7% de acetil tributil citrato. La incorporación del acetil tributil citrato, rebaja el coeficiente de permeabilidad al vapor y al oxígeno del ácido poliláctico hasta un nivel apropiado para ejercer una óptima barrera al oxígeno. Opcionalmente, puede sustituirse el ácido poliláctico por acetato de celulosa, conocido también por su nombre comercial como celofán. The closure film is composed of a transparent sheet made of 93 to 96% polylactic acid and 4 to 7% acetyl tributyl citrate. The incorporation of acetyl tributyl citrate lowers the vapor and oxygen permeability coefficient of polylactic acid to an appropriate level to provide an optimal oxygen barrier. Optionally, the polylactic acid can be replaced with cellulose acetate, also known by its commercial name as cellophane.
El cuerpo de la bandeja está realizado con una mezcla de entre un 50 y un 60 % de fibra de madera, un 15 a un 30 % de carbonato de calcio, un 1 a 10 % de arcilla de porcelana, un 3 a un 10%de almidón, un 2 a un 7% de látex y un 5 a un 7% de agua (humedad). Esta mezcla es perfectamente termoconformable y presenta buena capacidad de termosoldadura con la composición del film de cierre descrita, sin embargo no ofrece una buena capacidad de barrera al oxígeno y vapor de agua, por lo que es tratada con un una mezcla de un 12 a 16 % de dímero de alquil ceteno, un 80 a 83 % de agua, un 1 a 3 % de Hidróxido de sodio que rebaja el coeficiente de permeabilidad al vapor y al oxígeno de la bandeja ofreciendo una barrea al oxígeno apropiada para la conservación de alimentos. The body of the tray is made from a mixture of 50 to 60% wood fiber, 15 to 30% calcium carbonate, 1 to 10% porcelain clay, 3 to 10% of starch, 2 to 7% latex and 5 to 7% water (moisture). This mixture is perfectly thermoformable and has good heat-sealing capacity with the composition of the closure film described, however it does not offer a good barrier capacity to oxygen and water vapor, so it is treated with a mixture of 12 to 16 % alkyl ketene dimer, 80 to 83% water, 1 to 3% sodium hydroxide that lowers the vapor and oxygen permeability coefficient of the tray, offering an oxygen barrier suitable for food preservation.
Así pues, el producto final es un contenedor compostable y biodegradable en su totalidad formado por una bandeja y un film de cierre que se unen mediante termosoldadura convencional conformando un receptáculo hermético de baja permeabilidad al vapor y al oxígeno, por lo que resulta adecuado para contener alimentos incluso frescos en una atmosfera de gas inerte, alargando su conservación al evitar la oxidación de los alimentos. Thus, the final product is a compostable and biodegradable container entirely made up of a tray and a closing film that are joined by conventional heat welding to form an airtight receptacle with low permeability to vapor and oxygen, making it suitable for containing even fresh food in an inert gas atmosphere, prolonging its conservation by preventing food oxidation.
Este contenedor puede reciclarse enteramente como abono sin necesidad de separar la bandeja y el film de cierre. This container can be entirely recycled as compost without having to separate the tray and the closing film.
DESCRIPCIÓN DE UN EJEMPLO PRÁCTICO DESCRIPTION OF A PRACTICAL EXAMPLE
Según un ejemplo práctico de realización, únicamente explicativo y no limitativo, de las posibilidades de la invención, el nuevo contenedor de alimentos frescos compostable y biodegradable consta de una bandeja y un film de cierre transparente unidos de forma hermética mediante una línea de termosoldadura realizada a lo largo de toda la superficie que entra en contacto cuando se unen ambos elementos. According to a practical example of embodiment, solely explanatory and not limiting, of the possibilities of the invention, the new compostable and biodegradable fresh food container consists of a tray and a transparent closing film hermetically joined by a heat-welding line made by along the entire surface that comes into contact when both elements are joined.
La bandeja está realizada de un material compuesto por 55% de fibra de madera, 22% de Carbonato de Calcio, 5% de arcilla de porcelana, 7% de almidón, 4% de látex y 4% de agua, impermeabilizado con una mezcla de constituido por un 15% de dímero de alquil ceteno, un 83 % de agua, un 2% de Hidróxido de sodio. The tray is made of a material composed of 55% wood fiber, 22% Calcium Carbonate, 5% porcelain clay, 7% starch, 4% latex and 4% water, waterproofed with a mixture of Consisting of 15% alkyl ketene dimer, 83% water, 2% sodium hydroxide.
El film de cierre está constituido por una lámina transparente de un material compuesto por 95% de Ácido poliláctico y 5% de Acetil tributil citrato. The closure film is made up of a transparent sheet of a material composed of 95% polylactic acid and 5% acetyl tributyl citrate.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES202130752A ES2933271B2 (en) | 2021-08-02 | 2021-08-02 | Compostable and biodegradable food container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES202130752A ES2933271B2 (en) | 2021-08-02 | 2021-08-02 | Compostable and biodegradable food container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2933271A1 ES2933271A1 (en) | 2023-02-03 |
| ES2933271B2 true ES2933271B2 (en) | 2024-03-13 |
Family
ID=85111632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES202130752A Active ES2933271B2 (en) | 2021-08-02 | 2021-08-02 | Compostable and biodegradable food container |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2933271B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011139A (en) * | 2020-09-15 | 2020-12-01 | 张瑞芹 | Biodegradable food packaging material and preparation method thereof |
| CN112300589A (en) * | 2020-09-27 | 2021-02-02 | 宿州合鑫食品包装有限公司 | Antibacterial environment-friendly food packaging box and preparation process thereof |
| ES1259884Y (en) * | 2020-10-29 | 2021-04-23 | Ecologica De Los Pirineos S L | COMPOSTABLE PACKAGING |
-
2021
- 2021-08-02 ES ES202130752A patent/ES2933271B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2933271A1 (en) | 2023-02-03 |
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