WO2002002679A2 - Composicion y metodo para la separacion de las diferentes capas que componen los envases de larga vida - Google Patents
Composicion y metodo para la separacion de las diferentes capas que componen los envases de larga vida Download PDFInfo
- Publication number
- WO2002002679A2 WO2002002679A2 PCT/IB2001/001493 IB0101493W WO0202679A2 WO 2002002679 A2 WO2002002679 A2 WO 2002002679A2 IB 0101493 W IB0101493 W IB 0101493W WO 0202679 A2 WO0202679 A2 WO 0202679A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- volume
- layers
- packaging
- abouí
- enzymes
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the invention is directed to a composition and process for the separation of long-life packaging material that is composed of several layers, enabling the recycling all the components, and enabling use of the individual layers as raw material for the paper, plastics, aluminum and related industries.
- These types of packaging are typically composed of a multilayer sheet material including a plurality of various layers, which can include: cardboard, paper, aluminum foil and low-density food grade plastics.
- Tetra brik aseptic packaging consists of joining seven (7) layers from three different materials (paper, polyethylene, and aluminum).
- the aseptic packaging Tetra brik is composed of the follows layers:
- This packaging has been developed for preserving ultra-pasteurized liquid food and they must guarantee conditions of strict asepsis.
- this packaging has the following characteristics:
- composition of these packaging specially the aluminum sheet, eliminates the need to refrigerate food, what represents a save energy for the consumer.
- Another technique is to use the packaging waste in the manufacture of brick sheets of different sizes. After cutting and pressing the packaging waste at a high temperature these sheets are obtained. They are used to replace bricks of wood. As it is shown in the above mentioned methods, they are developed for using the used packaging without changing its physical structure.
- the new aqueous composition separates six (6) of the seven (7) layers that comprise the Tetra brik aseptic. Only two of the layers which contain the ink used for printing the packaging continued joined to each other.
- the subject matter of this invention can provide the following advantages in comparison to the present state of the art for separating the layers of long-life packaging materials: i. Waste material which was previously not economically feasible to fully recover can now be perfectly separated into individual layers and used in different processes; two . The process leading to the separation is organic and does not harm the environment; 3 . The financial investment necessary is minimal, leading to an economical and rapid separation of all materials;
- the water consumption is part of a closed loop system, eliminating the need for waste water treatment
- the separation process does not remove ink from the print on the packaging, eliminating the need for waste management due to ink partiles suspended in the water.
- the present invention relates to a simple process of separating the layers of long-life packaging Tetra brik aseptic which starts with the preparation of a synthetic composition.
- composition was formulated.
- An exemplary embodiment of the formulation can include lactic acid, sodium acOUSe, enzymes such as cellulase, ⁇ ⁇ -amylase and maltose, citric acid, activated carbon and / or water.
- Exemplary executions of the aqueous treatment formulation will have from about 5-10% by volume lactic acid, 20-40% by volume sodium acOUSe, 5-20% by volume cellulase enzymes, 5-20% by volume DDamylase enzymes, 5-20 % by volume citric acid, 0-5% activated carbon, with the remainder being water.
- a particularly preferred exemplary treatment composition is shown in the table be low
- a packaging material having a size of 15 x 22.7 cm, one liter conten ⁇ , with residual liquid contained inside can be ⁇ reafed wi ⁇ h ⁇ he formulation ⁇ ion of ⁇ his inven ⁇ ion.
- the long-life packaging fo be trea ⁇ ed will generally be composed of a paper or paperboard layer or layers and a film layer or layers of a plastic or metallized material. While the packaging will normally include at leas ⁇ these two ⁇ ypes of layers, there is no limit ⁇ he number of dissimilar (or similar) layers ⁇ ha ⁇ can be separated in accordance with the invention.
- the mix ⁇ ure of fhe inven ⁇ ion was called syn ⁇ he ⁇ ic composifion.
- the reaction condi ⁇ ions of ⁇ his formulation was determined by the variation of paramelers such as pH and femperature.
- the packaging ma ⁇ erial can be introduced into the mixture of this invention, for example, for about 3-10 minutes or more, and preferably for abou ⁇ 5 minu ⁇ es, ai a tempera ⁇ ure of, for example, abou ⁇ 70-90 ° C or more, and preferably about 80 ° C.
- the mixfure becomes enriched wifh the food residues from the packaging material.
- Calcium carbonate can be added to the mix ⁇ ure.
- Trea ⁇ men ⁇ of ⁇ he packaging ma ⁇ erials and ⁇ he con ⁇ ained food residues with the enzyme containing syn ⁇ he ⁇ ic ⁇ reafment methyl at an effective temperature produces a reformulation of fhe mixfure such fhat it includes: Ace ⁇ ic acid Lac ⁇ ic acid Bu ⁇ hanol E ⁇ hanol Enzymes and Cifric Acid
- this mixture is preferably purified using actived carbon.
- the final formula can be put into a container ai a ⁇ emperafure of abou ⁇ 80 ° C, and held in the container at that tempera ⁇ ure.
- the long life packaging is introduced for about 5 minutes, affer which ⁇ he packaging layers are separated wifhou ⁇ pollu ⁇ ing ⁇ he environmenf.
- Differenf ⁇ es ⁇ were carried ou ⁇ wi ⁇ h Te ⁇ ra brik asep ⁇ ic packaging of differen ⁇ sizes (250 mi, 500ml and 11), which were used fo pack juices, milk, wine, among other
- a total of 450 packages are trea ⁇ ed in accordance wifh ⁇ he nven ⁇ ion.
- Firs ⁇ , 18 long life packages composed of a pluraliiy of layers, each having a size of 8x6 cm, 3 of which contain juice residues, 2 contain milk residues, 4 con ⁇ ain wine residues and ⁇ he res ⁇ con ⁇ ain yogurt are tes ⁇ ed.
- the 450 packaging is cut into square shape pieces.
- the componen ⁇ s of the enriched medium produced after frea ⁇ men ⁇ wi ⁇ h the preferred exemplary formulation (% by volume) of this invention include:
- the enriched solution is introduced into the containers and the long life packaging ⁇ s introduced into this solution for 5 minutes. Test are run for 2 hours, and another 432 packages are separated inlo 2592 layers, separa ⁇ ed in ⁇ o differen ⁇ par ⁇ s, unspoiled and withou ⁇ any organic residue.
- the formulation for the separation of packaging layers is possible due to the pretreaiment and enrichme ⁇ t process of ⁇ he mixtures.
- a preferred exemplary synthetic formula (% by volume) for preparing fhe formulafion is
- the formula and fhe enrichment process preferably include calcium carbonafe, with formula being purified with activated carbon prior to its use as a separator. Additionally, the enzymes can, in performances, also include maltose.
- the formula is introduced into a container at abou ⁇ 80 ° C, fhe packaging ⁇ s submersed for aboul 5 minu ⁇ es, enabling ⁇ he various layers of ⁇ he packaging malerial to separate completely.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Wrappers (AREA)
- General Preparation And Processing Of Foods (AREA)
Abstract
Una composición y un método para la separación de las diferentes capas de envases de larga vida, el tratamiento incluye una composición sintética con base en agua, conteniendo ácido láctico, acetato de sodio, enzimas de celulosa, enzimas de alpha -amilasa, enzimas de maltosa, ácido cítrico y carbón activado.
Description
CO POSITΪON AND METHOD FOR SEPARATION OF THE DIFFERENT
LAYERS OF LONG LIFE PACKAGING
Applicants claim the benefit of co-pending U.S. provisional patent application Serial No. 60/208,066 filed May 31 , 2000. BACKGROUND OF THE INVENTION
Filed of Invention
The invention is directed to a composition and process for the separation of long-life packaging material that is composed of several layers, enabling the recycling all the components, and enabling use of the individual layers as raw material for the paper, plastics, aluminum and related industries. Backqround and Prior Art
The market for packaging of juices, milk producís, wine and the like has shifted towards long life packaging that uses ultra-pasteurized materials, commonly referred to as TetraPak®, but also produced by other similar packaging producers such us Elopak, International Paper. These packaging systems provide for excellent preservation of the contents contained in the packaging at a low cost for a long period of time.
These types of packaging are typically composed of a multilayer sheet material including a plurality of various layers, which can include: cardboard, paper, aluminum foil and low-density food grade plastics.
Process for manufacturing TetraPak® and use thereof.
The process for manufacturing Tetra brik aseptic packaging consists in joining seven(7) layers from three different materials(paper, polyethylene, and aluminum).
These layers have a specific arrangement, they are exposed to a thermal lamination after having been put one layer on top of the other layer. This process allows that the
different layers are adhered to each other (Becerra, 1997). Packaging printing is carried out on one of polyethylene layers with inks on the basis of water and it is covered with another polyethylene layer.
According to the foregoing, the aseptic packaging Tetra brik is composed of the follows layers:
4 layers of polyethylene, 2 layers of paper and 1 layer of aluminum.
This packaging has been developed for preserving ultra-pasteurized liquid food and they must guarantee conditions of strict asepsis. Thus, this packaging has the following characteristics:
It is opaque, waterproof and gas proof. It does not produce any taste or odor, resist to thermal and chemical pretreatment, and light. Moreover, it is a slow process and easy to be carried out. The composition of these packaging, specially the aluminum sheet, eliminates the need to refrigérate food, what represents a save energy for the consumer.
Currently, the use of this packaging has been extended, it is now also used for the packaging of food such us dairy products, wines, juices, soups among other.
Due to its composition, this type of packaging faces problems for disposal, since it is low biodegradable. Currently, this problem has increased due to the increase of the consumption of food packaged with tetraPak aseptic ®.
Methods for Tetra brik aseptic® packaging treatment.
There are some recycling techniques used for this packaging. The most common one is to use it as a combustible for boilers, which transform the disposal in energy.
This type of treatment needs a special filters for removing the high quantity of sulfur that can be emitted in the environment. (it is known that this packaging may have 10% of S).
Another technique is to use the packaging waste in the manufacture of brick sheets of different sizes. After cutting and pressing the packaging waste at a high temperature these sheets are obtained. They are used to replace bricks of wood. As it is shown in the above mentioned methods, they are developed for using the used packaging without changing its physical structure.
Previously, it has not been possible to perfectly sepárate all of the layers of the long-life packaging, which has resulted in the inability to fully recycle all of the materials from these types of packaging. This inability to fully recycle the materials leads to pollution problems, including the saturation of landfills where non-recycled materials are ultimately collected.
It is known from the prior art, that two methods related to the separation of the different layers of the packaging, enable recycled use of the individual layers. These methods are described bellow:
U.S. Patent No. 5,390,860 to Ali et al., for a Method and Apparatus for Separating Paper Fiber and Plastics from Mixed Waste Materials and Products Obtained Thereby, describes the separation of fiber and plástic components in a wet environment, using equip ent such as a depulper, centrifuge, mili, separators, filters, shakers, sedimentation tank, pulverizer etc. The Ali et al. System requires the use of sophisticated and expensive equipment, which through an aqueous médium permits the separation of the fibers.
ES Patent No.2124189 A1 as well as EP Patent No. 543302, describe the separation of the different layers by using an aqueous acetic acid solution under high temperatures during about 1 to 5 days, this period depends of the concentration of the acetic acid in the solution. This process has some disadvantages such as being slow which can produce hazardous vapors and it also requires a high demand of physical, technical and economical resources.
The most used method in an industrial environment is the hydrodepulper but it has the disadvantage of consuming a lot water and expensive in equipment. It is knσwn that countries like México, Brazil, Canadá, etc use this technique. Summarv of the Invention
After extensive research, new compositions have been identified and tested which permit the substantially complete separation of all of the layers of materials in long-life packaging.
The new aqueous composition separates six(6) of the seven(7) layers that comprise the Tetra brik aseptic. Only two of the layers which contain the ink used for printing the packaging continué joined to each other.
The subject matter of this invention can provide the following advantages in comparison to the present state of the art for separating the layers of long-life packaging materials: i . Waste material which was previously not economically feasible to fully recover can now be perfectly separated into individual layers and used in different processes;
2 . The process leading to the separation is organic and does not harm the environment; 3 . The financial investment necessary is minimal, leading to an economical and rapid separation of all materials;
4 . The water consumption is part of a closed loop system, eliminating the need for waste water treatment;
5. The separation process does not remove ink from the print on the packaging, eliminating the need for waste management due to ink partióles suspended in the water. Detailed Description of the Preferred Embodiments of the Invention. The present invention relates to a simple process of separating the layers of long-life packaging Tetra brik aseptic which starts with the preparation of a synthetic composition.
Taking into account some of the main compounds contained in the packaging, the composition was formulated.
After watching the packaging waste for a period of time, it was found that in some spots of the packaging, there was a separation of the different layers. From this observation, different formulations were tested including the compounds found in food such us dairy producís, wines, juices, among other. Thus, by the method of test and error it was found a formulation which enables the separation of long-life packaging material (Tetra brik aseptic ®). An exemplary embodiment of the formulation can include lactic acid, sodium acétate, enzymes such as cellulase, ©í-amylase and maltose, citric acid, activated carbón and/or water.
Exemplary embodiments of the aqueous treatment formulation will have from about 5-10% by volume lactic acid, 20-40% by volume sodium acétate, 5-20% by volume cellulase enzymes, 5-20% by volume DDamylase enzymes, 5-20% by volume citric acid, 0-5% activated carbón, with the remainder being water.
A particularly preferred exemplary treatment composition is shown in the table be low
In illustrative embodiments of the process for treatment packaging materials, a packaging material having a size of 15 x 22.7 cm, one liter contení, with residual liquid contained inside, can be íreafed wiíh íhe formulaíion of íhis inveníion.
The long-life packaging fo be treaíed will generally be composed of a paper or paperboard layer or layers and a film layer or layers of a plástic or metallized material. While the packaging will normally include at leasí these two íypes of layers, there is
no limit ío íhe number of dissimilar (or similar) layers íhaí can be separaled in accordance with the invention. The mixíure of fhe inveníion was called syníheíic composifion. The reaction condiíions of íhis formulation was determined by the variation of paramelers such as pH and femperature. It was found a formulation enabling to sepárate into six individual layers the packaging, with a pH parameter beíween 3.0 and 4.0, a íemperature parameter between 70°C and 90°C and continious síirring. The six layers are as follow: íwo layers of paper, three layers of polyethylene (one of íhese layers included the print of the packaging) and one layer of aluminum. Using acetic acid the pH of the formulation can be set up according ío íhe esíablished range, when needed.
The packaging maíerial can be introduced into the mixture of this invention, for example, for about 3-10 minutes or more, and preferably for abouí 5 minuíes, ai a temperaíure of, for example, abouí 70-90°C or more, and preferably about 80°C.
After the packaging material has been introduced into the treaímenf composiíion, the mixfure becomes enriched wifh the food residues from the packaging material. Calcium carbonate can be added to the mixíure.
Treaímení of íhe packaging maíerials and íhe coníained food residues with the enzyme containing syníheíic íreafment médium at an effective temperature produces a reformulation of fhe mixfure such fhat it includes: Aceíic acid Lacíic acid Buíhanol Eíhanol
Enzymes and Cifric Acid In embodimenís of íhe process of fhis invention, this mixture is preferably purified using actived carbón.
The final formula can be put into a container ai a íemperafure of abouí 80°C, and held in the container at that temperaíure. The long life packaging is introduced for about 5 minutes, affer which íhe packaging layers are separaíed wifhouí polluíing íhe environmenf.
Experimental Resulte
Differenf íesí were carried ouí wiíh Teíra brik asepíic packaging of differení sizes (250 mi, 500ml and 11), which were used fo pack juices, milk, wine, among other A total of 450 packages are treaíed in accordance wifh íhe ¡nveníion. Firsí, 18 long life packages composed of a pluraliiy of layers, each having a size of 8x6 cm, 3 of which contain juice residues, 2 contain milk residues, 4 coníain wine residues and íhe resí coníain yogurt are tesíed. The 450 packaging is cut into square shape pieces. After that, they are introduced inío íhe exemplary synfheíic médium of íhis inveníion for 5 minuíes at 80"C, wiíh a pH beíween 3 and 4 and consíanf síirring. Then fhe enriched syníheíic médium passes ío a confainer.
As a result, ¡i was obíained 900 paper layers, 450 aluminum layers and 1350 polyeíhylene layers, which do noí coníain any residues of the adjacent layers
The componenís of the enriched médium produced after freaímení wiíh the preferred exemplary formulation (%by volume) of this invention include:
The enriched solution is introduced into the containers and the long life packaging ¡s introduced into this solution for 5 minutes. Test are run for 2 hours, and another 432 packages are separated inlo 2592 layers, separaíed inío differení parís, unspoiled and withouí any organic residue.
The formulation for the separation of packaging layers is possible due to the pretreaiment and enrichmeπt process of íhe mixtures.
A preferred exemplary syntheíic formula (% by volume) for preparing fhe formulafion is
The formula and fhe enrichment process preferably include calcium carbonafe, with formula being purified with activaíed carbón prior to its use as a separator. Additionally, the enzymes can, in embodiments, also include maltose. The formula is introduced into a container at abouí 80°C, fhe packaging ¡s submersed for aboul 5 minuíes, enabling íhe various layers of íhe packaging malerial to sepárate completely.
Claims
Whaf is claimed is: 1. An aqueous composiíion for separaíing layers of long-life packaging, comprising:
5-10% by volume lactic acid; 20-40%o by volume sodium acetaíe; 5-20%) by volume cellulase enzymes; 5-20% by volume «^-¿.amylase enzymes;
5-20% by volume ciíric acid; 0-5% by volume activaíed carbón; and íhe remainder comprising waíer.
2 . The aqueous composition of claim 1 , comprising: 6% by volume lactic acid;
30% by volume sodium acetaíe; 10%> by volume cellulase enzymes; 10% by volume c? :amylase enzymes; 12% by volume cifric acid; 2% by volume acíivated carbón; and
30% water.
3. A method of separating the layers of long-life packaging, comprising: coníacting long-life packaging, comprising a pluraliíy of layers that differ in at leasf íwo physical and chemical properties, wifh the composition of claim 1 ; separating each of the plurality of layers; and separaíely recovering each of the plurality of layers.
4. The method of claim 3, further comprising recycling each of fhe pluralify of layers.
5. The meíhod of claim 3, wherein the contacfing produces an enriched mixlure comprising about 25% waíer, abouí 21 % aceíic acid, abouí 19% Buíhanol, abouí 18% lacfic acid, abouí 10% ethanol, abouí 5% enzymes, and abouí 2% acid residues and inerí substances.
6. The aqueous composition of claim, further comprising maltose enzymes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001277649A AU2001277649A1 (en) | 2000-05-31 | 2001-05-31 | Composition and method for separation of the different layers of long life packaging |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20806600P | 2000-05-31 | 2000-05-31 | |
| US60/208,066 | 2000-05-31 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2002002679A2 true WO2002002679A2 (es) | 2002-01-10 |
| WO2002002679A3 WO2002002679A3 (es) | 2002-05-10 |
| WO2002002679A9 WO2002002679A9 (es) | 2002-07-04 |
Family
ID=22773035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2001/001493 WO2002002679A2 (es) | 2000-05-31 | 2001-05-31 | Composicion y metodo para la separacion de las diferentes capas que componen los envases de larga vida |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20020033475A1 (es) |
| AU (1) | AU2001277649A1 (es) |
| WO (1) | WO2002002679A2 (es) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557682A (en) | 2016-12-15 | 2018-06-27 | saperatec GmbH | Method and apparatus for recycling packaging material |
| GB2574260A (en) | 2018-06-01 | 2019-12-04 | saperatec GmbH | Separation fluid, method and apparatus for recycling multilayer material using a metal passivation agent |
| CN109355319A (zh) * | 2018-08-24 | 2019-02-19 | 河海大学 | 一种利用白酒废水高效生产短链脂肪酸的方法 |
| GB202212897D0 (en) * | 2022-09-05 | 2022-10-19 | Provost Fellows Found Scholars And The Other Members Of Board Of The College Of The Holy And Undivid | Separation of multilayer structures |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0525708A1 (de) * | 1991-07-30 | 1993-02-03 | Ems-Inventa Ag | Zwischenschichten für Mehrschichtformkörper sowie Verfahren zu deren Auflösung |
| GB2276178A (en) * | 1993-03-15 | 1994-09-21 | Sandoz Ltd | Treatment of textiles |
| EP0801168A1 (en) * | 1996-04-09 | 1997-10-15 | Ein Engineering Co., Ltd. | Method and apparatus for recycling laminated film |
-
2001
- 2001-05-30 US US09/866,723 patent/US20020033475A1/en not_active Abandoned
- 2001-05-31 AU AU2001277649A patent/AU2001277649A1/en not_active Abandoned
- 2001-05-31 WO PCT/IB2001/001493 patent/WO2002002679A2/es active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0525708A1 (de) * | 1991-07-30 | 1993-02-03 | Ems-Inventa Ag | Zwischenschichten für Mehrschichtformkörper sowie Verfahren zu deren Auflösung |
| GB2276178A (en) * | 1993-03-15 | 1994-09-21 | Sandoz Ltd | Treatment of textiles |
| EP0801168A1 (en) * | 1996-04-09 | 1997-10-15 | Ein Engineering Co., Ltd. | Method and apparatus for recycling laminated film |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002002679A3 (es) | 2002-05-10 |
| AU2001277649A1 (en) | 2002-01-14 |
| WO2002002679A9 (es) | 2002-07-04 |
| US20020033475A1 (en) | 2002-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102091365B1 (ko) | 페이퍼 공급원료의 처리 | |
| US11535022B2 (en) | Method and apparatus for recycling packaging material | |
| US4031039A (en) | Method for treating waste high-polymer mixture | |
| US8945396B2 (en) | Process for delamination of laminated packaging | |
| Karaboyacı | Process design for the recycling of tetra Pak components | |
| ES2848324T3 (es) | Proceso energéticamente eficaz y respetuoso con el medioambiente para la producción de furfural a partir de material lignocelulósico | |
| WO2021226094A1 (en) | Process for conversion of cellulose recycling or waste material to ethanol, nanocellulose and biosorbent material | |
| JP2015504363A (ja) | リグニンを含有する水溶液を調製する方法 | |
| WO2002002679A2 (es) | Composicion y metodo para la separacion de las diferentes capas que componen los envases de larga vida | |
| CN104475260A (zh) | 一种用于分离abs和hips的浮选体系和浮选方法 | |
| CN101380787A (zh) | 废弃铝箔包装纸的回收再利用的方法 | |
| WO2013023329A1 (zh) | 一种滤袋滤纸及茶叶滤袋和袋装茶叶 | |
| BR112017015298B1 (pt) | Processo para a decomposição de material de biomassa contendo lignocelulose | |
| BR0206286A (pt) | processo e dispositivo para separação de produtos de fermentação de baixa molecularidade de misturas de materiais | |
| ES2124189A1 (es) | Metodo para la recuperacion de aluminio, celulosa y polietileno a partir de residuos de envases de tipo pack. | |
| Muthuswamy et al. | Effects of plastics in anaerobic digestion of urban solid wastes | |
| US20140073025A1 (en) | Method and apparatus for recycling and reusing beverages and other liquids and container materials | |
| WO2023170572A1 (en) | Process for separating materials constituting a composite multilayer using acidophilic bacteria | |
| WO2018152404A1 (en) | Method of separating metal from metallic starting materials using a hydrothermal reactor system | |
| DK152295B (da) | Fremgangsmaade til filtrering af oel | |
| BR102019027142B1 (pt) | Laminado de papel impregnada com polivinílico (pvoh), para processo de separação de polímeros na etapa de reciclagem | |
| CN115090651A (zh) | 一种含杂厨余垃圾综合处理的方法 | |
| NZ612188B2 (en) | A method of producing sugar from paper | |
| OA16508A (en) | Processing paper feedstocks. | |
| NZ735713A (en) | A method of producing sugar from paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| AK | Designated states |
Kind code of ref document: C2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: C2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
| COP | Corrected version of pamphlet |
Free format text: PAGES 1-10, DESCRIPTION, REPLACED BY CORRECT PAGES 1-10; PAGES 11 AND 12, CLAIMS, REPLACED BY CORRECT PAGES 11 AND 12; INTERNATIONAL SEARCH REPORT IN SPANISH, ADDED |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 02108597 Country of ref document: CO |
|
| 122 | Ep: pct application non-entry in european phase | ||
| NENP | Non-entry into the national phase |
Ref country code: JP |