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WO2024046976A1 - Procédé de revêtement d'une préforme séchée - Google Patents

Procédé de revêtement d'une préforme séchée Download PDF

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Publication number
WO2024046976A1
WO2024046976A1 PCT/EP2023/073523 EP2023073523W WO2024046976A1 WO 2024046976 A1 WO2024046976 A1 WO 2024046976A1 EP 2023073523 W EP2023073523 W EP 2023073523W WO 2024046976 A1 WO2024046976 A1 WO 2024046976A1
Authority
WO
WIPO (PCT)
Prior art keywords
dried blank
blank
powder coating
infrared radiation
dried
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/EP2023/073523
Other languages
German (de)
English (en)
Inventor
Florian MÜLLER
Clemens Schmidt
Anupam AKOLKAR
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.)
Alpla Werke Alwin Lehner GmbH and Co KG
Original Assignee
Alpla Werke Alwin Lehner GmbH and Co KG
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 Alpla Werke Alwin Lehner GmbH and Co KG filed Critical Alpla Werke Alwin Lehner GmbH and Co KG
Priority to CN202380062225.7A priority Critical patent/CN119789917A/zh
Priority to EP23761543.0A priority patent/EP4580820A1/fr
Publication of WO2024046976A1 publication Critical patent/WO2024046976A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B05D3/0263—After-treatment with IR heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
    • 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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/40—Details of walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/12—Plant for applying liquids or other fluent materials to objects specially adapted for coating the interior of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/22—Paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/0426—Cooling with air

Definitions

  • the present invention relates to a method for coating a dried blank of a fiber-based product made from pulp.
  • a fiber-based container was proposed in WO 2012/139590 Al. To produce this container, so-called pulp is placed in a mold and pressed against a corresponding wall using a flexible balloon in this mold and compressed accordingly.
  • the still wet blank is dried by applying energy, so that a dried blank is provided for further processing.
  • Pulp is a mixture of fibers and water, especially natural fibers such as hemp fibers, cellulose fibers or flax fibers or a mixture thereof. If necessary, the pulp has additives, such as those known from PCT/EP2019/076839, which, for example, improve hardening of the compressed pulp or have an influence on the later appearance or generally change the properties of the pulp or the later container.
  • a fiber-based container is provided into which a plastic lining is placed. This typically happens in the form of the fiber-based container being provided in a first step and a preform being introduced into this container in a second step. This preform is then inflated within the fiber-based container until it touches an inner contour of the fiber-based container, or is in contact with the inner contour of the fiber-based container. This inflation process typically takes place in a blow mold whose cavity corresponds to the outer contour of the fiber-based container. Since, in contrast to conventional blow molding processes, two separate elements have to be handled, such a process is much more complicated since the preform must be positioned and held relative to the fiber-based container and this in turn must be positioned and held within the blow mold.
  • EP 3 375 593 A1 describes a preform for producing a container which has extensions in its neck area which can be brought into engagement with a corresponding fiber-based container with the aim of ensuring that the container and the preform remain connected to one another.
  • this type of connection is prone to errors because the inner contour or the inner surface of the container, depending on the specific Properties of the pulp from which the container is formed are subject to varying degrees of deviation.
  • This is particularly disadvantageous in the neck area, since a clean pressing between the preform or its extensions and the fiber-based container, certain tolerance limits must be adhered to, but this is not always possible due to the different process parameters and the possibly changing nature of the pulp.
  • this type of production still requires a relatively large amount of plastic.
  • a method according to the invention for coating a dried blank of a fiber-based product made from pulp, in particular a container or a fiber-based closure element for a container comprises the steps:
  • infrared radiation To apply infrared radiation to the powder coating, it penetrates a wall of the dried blank during the irradiation, especially in the area of the interior of the container, before hitting the powder coating.
  • the infrared source can be arranged outside the dried blank, but the powder coating inside the dried blank can be exposed to the infrared radiation.
  • the penetration of the dried blank makes it possible in particular to bring the powder coating to a higher temperature level than the blank.
  • An additional or alternative aspect of the invention also relates to a method in which the blank and the powder coating are heated, in particular differently.
  • the powder coating is heated to a higher temperature than the blank, in particular by infrared radiation, which penetrates a wall of the blank.
  • the blank is essentially only heated via the heat radiation from the powder coating.
  • the dried blank is provided with a prefabricated opening before the powder coating is applied.
  • a corresponding sealing plane or sealing surface can be provided, which can interact with a corresponding closure, such as a lid.
  • a fibrous or inaccurate finish of the blank can be removed at the same time.
  • the dried blank is produced in such a way that a supernatant is provided in the area of an opening at the top, which can be separated off after the blank has dried. By separating this supernatant, a correspondingly inaccurate or fibrous area of the dried blank can be removed.
  • the powder coating is additionally applied to the prepared opening of the dried blank. This means that the prefabricated opening can also be sealed.
  • a powder coating can be applied to an outside of a neck area of the dried blank after assembly.
  • the dried blank remains at least partially uncoated on its outside.
  • the uncoated area on the outside of the blank allows the product to be recycled.
  • the uncoated area provides an attack surface on which the product can be broken up or softened using water. The product can therefore be recycled more easily.
  • a meltable polymer can be applied as a powder coating.
  • Polymers have advantageous properties and are easy to process.
  • a polyester such as polyethylene terephthalate (PET), polyethylene furanoate (PEF), polyethylene isosorbide terephthalate (PEIT), polylactide (PLA), Polybutylene succinate (PBS), poly-s-caprolactone (PCL) or polyhydroxyalkanoate (PHA), in particular polyhydroxybutyrate (PHB) are used.
  • PET polyethylene terephthalate
  • PET polyethylene furanoate
  • PEIT polyethylene isosorbide terephthalate
  • PBS Polybutylene succinate
  • PCL poly-s-caprolactone
  • PHA polyhydroxyalkanoate
  • PHB polyhydroxybutyrate
  • EVOH Ethylene-vinyl alcohol copolymer
  • the powder coating it can be electrostatically charged.
  • a conductive mold which encases the dried blank, is charged in the opposite polarity with respect to the powder. The powder then settles particularly on the inside of the blank and sticks there.
  • An infrared source for generating the infrared radiation is preferably arranged outside the dried blank.
  • the infrared radiation has a wavelength of 780 nm to 1400 nm in the near infrared range and a wavelength of 1 in the short-wave infrared range. 4 p.m. to 3 p.m. 0 pm, in the middle range a wavelength of 3. 0 to 8. 0 pm, in the long wavelength range a wavelength of 8. 0 pm to 15 pm and in the long range a wavelength of 15 pm to 1mm.
  • the wavelength of the present infrared radiation is preferably between 1 pm and 10 pm, in particular between 2 pm and 7 pm. These wavelengths can be well absorbed by polymers.
  • the ability to absorb is particularly high, particularly in the short-wave range, preferably in the range from 2 pm to 7 pm.
  • the proportion of higher-wave radiation, i.e. radiation in the long range is preferably less than 70%, in particular less than 50%, preferably less than 30%.
  • these wavelengths make it possible to melt the powder coating without radiating unnecessary energy into the dried blank.
  • the dried blank can be conveyed through an oven to be exposed to infrared radiation.
  • the present oven is a device within which a large number of infrared sources are arranged. These can be arranged, for example, along a congruent contour of the dried blank and at a distance from it.
  • the infrared radiation emitted is preferably infrared radiation generated without a heat source. This makes it possible to reduce the impact on the fiber-based blank itself.
  • infrared sources that emit radiation with a wavelength of 6 pm can be arranged at the inlet of the oven for rapid heating of the powder coating.
  • Infrared sources can be arranged below and emit radiation with a wavelength of 3 pm in order to keep the melting rate constant.
  • the dried blank can be rotated about its longitudinal axis. The dried blank is moved linearly through the oven, during which it rotates about its longitudinal axis. Accordingly, each area of a surface of the blank is guided past corresponding infrared sources, so that the dried blank and thus the powder coating is evenly exposed to infrared radiation from all sides.
  • the dried blank does not overheat, it can be provided that it is cooled by a stream of cooling air while it is exposed to infrared radiation. Overheating of the dried blank is avoided. Overheating the dried blank would cause the fibers to degenerate and strength to decrease.
  • the infrared sources can, for example, be arranged at different heights along the conveying direction of the blank, so that they each act on different areas of the blank.
  • infrared sources of different power or to regulate the infrared sources, for example, based on a respective product profile, so that their power can be adjusted depending on the product or the length of time the product remains.
  • the dried blank is preferably transparent in the wave range from 1 pm to 10 pm. This can be achieved by the fact that the chemical composition of the blank has functional groups that cannot be excited in this wave range.
  • the powder coating preferably absorbs the infrared radiation in the wavelength range from 1 pm to 10 pm. This means that the coating can be heated up quickly.
  • the applied powder coating is therefore supplied with energy and the powder is transferred into a melt. Melting creates a homogeneous film that provides an appropriate seal. This film preferably extends from the inside over the finished opening to an outer area of the neck and forms a continuous seal in this area.
  • the dried blank is tested for leaks. This can prevent defective products from being sold.
  • a product can be filled into the dried blank, provided the dried blank is designed as a container.
  • the dried blank can then be closed with a closure. Accordingly, a closed body is created for the transport and protection of liquid products.
  • a reliable seal can be created in this area with, for example, a corresponding sealing cone or a sealing plane, for example made of a sealing material such as a liner.
  • Figure 1 a powder coating process
  • Figure 2 the drying step of the powder coating process
  • Figure 3 a leak test
  • Figure 5 exemplary further typical products that can be produced using the method according to the invention.
  • Figure 6 an example of a typical fiber-based closure that can be produced using the method according to the invention.
  • Figure 7 a representation of first absorption spectra
  • Figure 8 a representation of second absorption spectra
  • Figure 9 a representation of third absorption spectra.
  • Figure 1 shows a coating step.
  • a dried and already assembled blank 61 is fed to a powder coating system, not shown here.
  • an electrostatically charged lance 35 is introduced into the finished blank 61. This is located in an oppositely charged envelope which is also not shown here. Due to the electrostatic charge of the applied powder, it sticks to the inside 63 of the finished blank 61.
  • the now coated finished blank 61 is, as can be seen in Figure 2, transferred into an oven and exposed to infrared radiation. This causes the powder coating to melt, creating a continuous, homogeneous film. The blank 61 is thus sealed.
  • the blank 61 can then be tested for leaks using a corresponding testing device 500, as shown in FIG.
  • the blank 61 can then be closed with a lid 300, as shown in Figure 4.
  • FIG. 5 shows examples of further typical fiber-based products that can be produced using the method described here.
  • a container 100 is shown in the form of a bottle. This also has a thread on the bottle neck and essentially corresponds to a fiber-based product made from a blank 61 according to FIGS. 1 to 4.
  • the container 100' is in the form of a bowl, the container 100'' is in the form of a cup.
  • FIG. 6 shows an example of a typical fiber-based closure 300 that can be produced using the method described here.
  • Figures 7 to 9 each show different comparisons of different absorption spectra of different materials.
  • the dark solid line shows the emitted infrared power as a cumulative distribution function of an infrared source with a 3 pm peak and the light solid line shows the emitted infrared power as a cumulative distribution function of an infrared source with a 6 pm peak.
  • Figures 7 to 9 also show the absorption capacity, or the absorption spectrum of the dried blank is shown. The corresponding line is shown with fine dots. It can be seen that the blank has increased absorption in the range of approx. 10 pm and from the area from approx. 2 p.m.
  • the dashed line shows the absorbency, or the absorption spectrum of a powder coating made of EVOH is shown.
  • EVOH has an increased absorption in the region of ca. 3 pm, at approx. 3. 5 pm as well in the range between 7 pm and 8 pm. It can therefore be seen that radiation with these wavelengths is absorbed significantly better by EVOH than by the blank.
  • the powder coating is therefore heated up more quickly, to the point of melting, without the blank being heated up to the same extent.
  • the dashed line shows the absorption capacity or the absorption spectrum of a powder coating made of PHB.
  • PHB has an increased absorption in the region around 6 pm and in the region between 8 pm and 10 pm. It can therefore be seen that radiation with these wavelengths is absorbed significantly better by PBH than by the blank. The powder coating is therefore heated up more quickly, to the point of melting, without the blank being heated up to the same extent.
  • the dashed line shows the absorption capacity or the absorption spectrum of a powder coating made of PET-C, i.e. crystalline PET.
  • PET-C has increased absorption in the region around 6 pm and around 8 pm. It can therefore be seen that radiation with these wavelengths is absorbed significantly better by PET-C than by the blank. The powder coating is therefore heated up more quickly, to the point of melting, without the blank being heated up to the same extent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

L'invention divulgue un procédé de revêtement d'une préforme séchée (61) d'un produit à base de fibres constitué de pâte, le procédé comprenant les étapes consistant à : fournir la préforme séchée (61) ; appliquer un revêtement en poudre sur la face interne (63) de la préforme séchée (61) ; durcir le revêtement en poudre par exposition de celui-ci à un rayonnement infrarouge (81) de telle sorte qu'un film continu est formé. Pendant la procédure d'irradiation, le rayonnement infrarouge (81) pénètre dans une paroi de la préforme séchée (61).
PCT/EP2023/073523 2022-08-30 2023-08-28 Procédé de revêtement d'une préforme séchée Ceased WO2024046976A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202380062225.7A CN119789917A (zh) 2022-08-30 2023-08-28 涂覆干燥型坯的方法
EP23761543.0A EP4580820A1 (fr) 2022-08-30 2023-08-28 Procédé de revêtement d'une préforme séchée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH001011/2022A CH720000A9 (de) 2022-08-30 2022-08-30 Verfahren zum Beschichten eines getrockneten Rohlings.
CHCH001011/2022 2022-08-30

Publications (1)

Publication Number Publication Date
WO2024046976A1 true WO2024046976A1 (fr) 2024-03-07

Family

ID=83232798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/073523 Ceased WO2024046976A1 (fr) 2022-08-30 2023-08-28 Procédé de revêtement d'une préforme séchée

Country Status (4)

Country Link
EP (1) EP4580820A1 (fr)
CN (1) CN119789917A (fr)
CH (1) CH720000A9 (fr)
WO (1) WO2024046976A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168676A (en) * 1976-12-13 1979-09-25 Onoda Cement Co., Ltd. Apparatus for making paper containers
JPS61236837A (ja) * 1985-04-15 1986-10-22 Nordson Kk プラスチツク製容器に対する塗装被膜形成方法
EP1126083A1 (fr) * 1998-05-07 2001-08-22 Kao Corporation Corps moule
EP1221413A1 (fr) * 1999-10-15 2002-07-10 Kao Corporation Recipient constitue d'un moule avec depot de pate
US20100044267A1 (en) * 2008-08-21 2010-02-25 Cynthia Tolibas-Spurlock Compostable container for storing fluids
WO2010144340A1 (fr) * 2009-06-11 2010-12-16 Ellery West Récipient en papier avec goulot renforcé
WO2012139590A1 (fr) 2011-04-15 2012-10-18 Ecoxpac A/S Récipient
EP3375593A1 (fr) 2017-03-16 2018-09-19 BillerudKorsnäs AB Méthode de fabrication d'un contenant comprenant un revêtement plastique et une coque fibreuse par soufflage, méthode de fabrication et préforme
WO2018167192A1 (fr) 2017-03-16 2018-09-20 Billerudkorsnäs Ab Récipient
WO2019175610A1 (fr) * 2018-03-16 2019-09-19 Longcroft James Henry Stoddart Revêtements biodégradables pour substrats biodégradables
WO2020016409A1 (fr) * 2018-07-19 2020-01-23 Celwise Ab Bouteille en pâte cellulosique biodégradable et son procédé de fabrication
EP4067572A1 (fr) * 2021-03-31 2022-10-05 BillerudKorsnäs AB Procédé de fourniture d'un revêtement de barrière non uniforme sur un récipient creux comportant de la pulpe moulée

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168676A (en) * 1976-12-13 1979-09-25 Onoda Cement Co., Ltd. Apparatus for making paper containers
JPS61236837A (ja) * 1985-04-15 1986-10-22 Nordson Kk プラスチツク製容器に対する塗装被膜形成方法
EP1126083A1 (fr) * 1998-05-07 2001-08-22 Kao Corporation Corps moule
EP1221413A1 (fr) * 1999-10-15 2002-07-10 Kao Corporation Recipient constitue d'un moule avec depot de pate
US20100044267A1 (en) * 2008-08-21 2010-02-25 Cynthia Tolibas-Spurlock Compostable container for storing fluids
WO2010144340A1 (fr) * 2009-06-11 2010-12-16 Ellery West Récipient en papier avec goulot renforcé
WO2012139590A1 (fr) 2011-04-15 2012-10-18 Ecoxpac A/S Récipient
EP3375593A1 (fr) 2017-03-16 2018-09-19 BillerudKorsnäs AB Méthode de fabrication d'un contenant comprenant un revêtement plastique et une coque fibreuse par soufflage, méthode de fabrication et préforme
WO2018167192A1 (fr) 2017-03-16 2018-09-20 Billerudkorsnäs Ab Récipient
WO2019175610A1 (fr) * 2018-03-16 2019-09-19 Longcroft James Henry Stoddart Revêtements biodégradables pour substrats biodégradables
WO2020016409A1 (fr) * 2018-07-19 2020-01-23 Celwise Ab Bouteille en pâte cellulosique biodégradable et son procédé de fabrication
EP4067572A1 (fr) * 2021-03-31 2022-10-05 BillerudKorsnäs AB Procédé de fourniture d'un revêtement de barrière non uniforme sur un récipient creux comportant de la pulpe moulée

Also Published As

Publication number Publication date
CN119789917A (zh) 2025-04-08
CH720000A1 (de) 2024-03-15
EP4580820A1 (fr) 2025-07-09
CH720000A9 (de) 2024-05-15

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