WO2019196966A1 - Method for removing labels from plastic packages - Google Patents

Method for removing labels from plastic packages Download PDF

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Publication number
WO2019196966A1
WO2019196966A1 PCT/CZ2019/000019 CZ2019000019W WO2019196966A1 WO 2019196966 A1 WO2019196966 A1 WO 2019196966A1 CZ 2019000019 W CZ2019000019 W CZ 2019000019W WO 2019196966 A1 WO2019196966 A1 WO 2019196966A1
Authority
WO
WIPO (PCT)
Prior art keywords
packages
labels
water
whole surface
pet
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.)
Ceased
Application number
PCT/CZ2019/000019
Other languages
English (en)
French (fr)
Inventor
Tomáš Kamarýt
Dan KUKLĺNEK
Ladislav POSPĺŠIL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2019196966A1 publication Critical patent/WO2019196966A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0203—Separating plastics from plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0286—Cleaning means used for separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0286—Cleaning means used for separation
    • B29B2017/0289—Washing the materials in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003—PET, i.e. poylethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/744—Labels, badges, e.g. marker sleeves
    • 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 relates to a method for removing labels from plastic packages with labels adhered to the whole surface thereof.
  • Packages made of polyethylene terephthalate, PET or PET type are commonly physically or chemically recycled as described in a number of patents, for example CZ 301 118 B6, US 3544622, US 4092230, CZ PV 2006-313 and others.
  • the physical recycling of PET is used more widely. In this crushed PET packages are being washed in warm water alone or with the addition of additives. Labels of packages (bottles) of non-alcoholic beverage which are only spot-glued either with water-soluble or hydrolysable adhesives used are easily removable in this process.
  • Packages made of polyethylene terephthalate, PET or PET type, are increasingly being used in household chemicals as well, such as products for dishwashing by hand, kitchen and bathroom cleaning products and body care products such as shower gels, hair shampoos, and similar. According to valid laws the labels of these packages must be attached firmly and clearly legible throughout the lifetime that is until the content of the package has been used up. These labels cannot be removed from such PET packages either by washing in warm water alone or in water with the addition additives. Such packages must then be disposed of by landfilling or incineration.
  • the method for removing labels from plastic packages consists in the fact that the waste PET package characterized by biaxial orientation and a label adhered to the whole surface thereof is heated so that a release of the biaxial orientation occurs and due to shrinkage forces the release of the label adhered to the whole surface from the waste packages occurs.
  • This process can also be applied to PETG packages that are not biaxially oriented. Elere, due to the low glass transition temperature (Tg), the collapse of the shape of the package and also the release of the label adhered to the whole surface thereof occurs.
  • Tg glass transition temperature
  • This process can also be used for PET packages.
  • the heating of the plastic packages can be carried out with a warm fluid, preferably ordinary water or hot air.
  • the heating of the plastic packages can also be carried out in a batch or continuous device.
  • the stirring can be done manually or motorically.
  • the device may be horizontal or vertical.
  • a 10 liter vessel was filled with ordinary water to 80% of its volume and this water has been brought to boil.
  • it is a vertical stirring vessel.
  • PET packages with a label adhered to the whole surface thereof were gradually inserted and immersed in the boiling water. Care has been taken to fill these waste packages with water and thus they dropped to the bottom of the vessel due to the density of the PET material.
  • the vessel with the packages has been stirred for at least 3 minutes. The separation of the labels and shrinkage of the packages occurred. The separated labels were separated by hand using a strainer. Then the PET packages without the labels were removed. The water from these was poured back into the vessel and this water has been brought to boil again to carry out another separation of the labels from the PET packages by the same process.
  • a 10 liter vessel was filled with ordinary water to 80% of its volume and this water has been brought to boil.
  • it is a vertical stirring vessel.
  • PETG packages with a label adhered to the whole surface thereof were gradually inserted and immersed in the boiling water. Care has been taken to fill these waste packages with water and thus they dropped to the bottom of the vessel due to the density of the PETG material.
  • the vessel with the packages has been stirred for at least 3 minutes. The separation of the labels and collapse of the shape of the packages occurred. The separated labels were separated by hand using a strainer. Then the PETG packages without the labels were removed. The water from these was poured back into the vessel and this water has been brought to boil again to carry out another separation of the labels from the PETG packages by the same process.
  • a 10 liter hot air drier with forced air circulation was used. This drier was heated to 100 °C. PET packages with a label adhered to the whole surface thereof were gradually inserted into the drier. The packages were heated for at least 10 minutes. The separation of the labels and shrinkage of the packages occurred. The separated labels were picked manually. Then the PET packages without the labels were removed.
  • a 10 liter hot air drier with forced air circulation was used. This drier was heated to 100 °C. PETG packages with a label adhered to the whole surface thereof were gradually inserted into the drier. The packages were heated for at least 10 minutes. The separation of the labels and shrinkage of the packages occurred. The separated labels were picked manually. Then the PETG packages without the labels were removed.
  • a horizontal 10 liter vessel was filled with ordinary water to 80% of its volume and this water has been brought to boil by external heating.
  • it is a horizontal stirring vessel.
  • PET packages with a label adhered to the whole surface thereof were gradually inserted and immersed in 90 °C hot water with the rotation of the vessel turned off. Care has been taken to fill these waste packages with water and thus they dropped to the bottom of the vessel due to the density of the PET material.
  • the vessel has been closed and was stirred with the packages for at least 15 minutes. The separation of the labels and shrinkage of the packages occurred. The separated labels were separated by hand using a strainer. Then the PET packages without the labels were removed. The water from these was poured back into the vessel and this water has been brought to boil again to carry out another separation of the labels from the PET packages by the same process.
  • a horizontal 10 liter vessel was filled with ordinary water to 80% of its volume and this water has been brought to boil by external heating.
  • it is a horizontal stirring vessel.
  • PETG packages with a label adhered to the whole surface thereof were gradually inserted and immersed in 95 °C hot water with the rotation of the vessel turned off. Care has been taken to fill these waste packages with water and thus they dropped to the bottom of the vessel due to the density of the PETG material.
  • the vessel has been closed and was stirred with the packages for at least 10 minutes. The separation of the labels and shrinkage of the packages occurred. The separated labels were separated by hand using a strainer. Then the PETG packages without the labels were removed. The water from these was poured back into the vessel and this water has been brought to boil again to carry out another separation of the labels from the PETG packages by the same process.
  • the invention relates to a method for recycling waste packages characterized by oriented polymeric structures and having labels adhered to the whole surface thereof.
  • the product is plastic packages with derelaxed orientation and released labels. This applies in particular to polyethylene terephthalate (PET) or PETG packages. After the mechanical removal of the released labels the plastic packages can be recycled physically or chemically according to known processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (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)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
PCT/CZ2019/000019 2018-04-12 2019-04-11 Method for removing labels from plastic packages Ceased WO2019196966A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2018-182A CZ2018182A3 (cs) 2018-04-12 2018-04-12 Způsob odstraňování etiket z plastových obalů
CZPV2018-182 2018-04-12

Publications (1)

Publication Number Publication Date
WO2019196966A1 true WO2019196966A1 (en) 2019-10-17

Family

ID=67141285

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2019/000019 Ceased WO2019196966A1 (en) 2018-04-12 2019-04-11 Method for removing labels from plastic packages

Country Status (2)

Country Link
CZ (1) CZ2018182A3 (cs)
WO (1) WO2019196966A1 (cs)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544622A (en) 1965-03-10 1970-12-01 Du Pont Alkaline saponification of polyethylene terephthalate at high temperatures using controlled amount of sodium hydroxide
US4092230A (en) 1977-03-10 1978-05-30 Suntech, Inc. Electrochemical process for the manufacture of terephthalic acid
US4830699A (en) * 1986-03-11 1989-05-16 Stamicarbon B.V. Process and device for removing objects from the outside of containers
US5148993A (en) * 1990-12-27 1992-09-22 Hidehiro Kashiwagi Method for recycling treatment of refuse of plastic molded articles and apparatus therefor
CZ2006313A3 (cs) 2006-05-16 2007-11-28 Ústav chemických procesu Akademie ved CR Zpusob izolace kyseliny tereftalové
CZ301118B6 (cs) 2006-09-08 2009-11-11 Ústav chemických procesu Akademie ved CR Zpusob chemické recyklace odpadního polyethylentereftalátu

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5958987A (en) * 1996-04-10 1999-09-28 The Coca-Cola Company Process for separating polyester from other materials
US7253253B2 (en) * 2005-04-01 2007-08-07 Honeywell Federal Manufacturing & Technology, Llc Method of removing contaminants from plastic resins
GB2502945A (en) * 2012-04-12 2013-12-18 Linpac Packaging Ltd Separation of multilayer plastics for recycling
US9487622B2 (en) * 2013-07-25 2016-11-08 Sabic Global Technologies B.V. Process for the preparation of modified poly(alkylene terephthalate) employing an in-situ titanium-containing catalyst
WO2015116510A1 (en) * 2014-01-28 2015-08-06 Sabic Global Technologies B.V. Modified endcapped poly(alkylene terephthalate) prepared by employing an in-situ titanium-containing catalyst and compositions derived therefrom

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544622A (en) 1965-03-10 1970-12-01 Du Pont Alkaline saponification of polyethylene terephthalate at high temperatures using controlled amount of sodium hydroxide
US4092230A (en) 1977-03-10 1978-05-30 Suntech, Inc. Electrochemical process for the manufacture of terephthalic acid
US4830699A (en) * 1986-03-11 1989-05-16 Stamicarbon B.V. Process and device for removing objects from the outside of containers
US5148993A (en) * 1990-12-27 1992-09-22 Hidehiro Kashiwagi Method for recycling treatment of refuse of plastic molded articles and apparatus therefor
CZ2006313A3 (cs) 2006-05-16 2007-11-28 Ústav chemických procesu Akademie ved CR Zpusob izolace kyseliny tereftalové
CZ301118B6 (cs) 2006-09-08 2009-11-11 Ústav chemických procesu Akademie ved CR Zpusob chemické recyklace odpadního polyethylentereftalátu

Also Published As

Publication number Publication date
CZ307871B6 (cs) 2019-07-10
CZ2018182A3 (cs) 2019-07-10

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